CN113163030B - Folding mechanism, support structure and electronic equipment - Google Patents

As shown in fig. 1-10, embodiments of the present application disclose a folding mechanism, a stand structure, and an electronic device. The electronic device may be a folding electronic device, and the electronic device may include a

610 and the above-mentioned support structure, and the support structure may include a

110, a

120, and the above-mentioned folding mechanism, with which the electronic device may be switched between a folded state and an unfolded state.

As shown in fig. 5, the folding mechanism disclosed in the embodiment of the present application includes a first

210, a second

220, a third

230, a fourth

240, a

310, a

320, and a

410. In order to improve the symmetry of the folding mechanism and to improve the folding performance of the whole folding mechanism, the structures of the first

210 and the second

220 may be symmetrically arranged and respectively arranged at two opposite sides of the

410, and the structures of the third

230 and the fourth

240 are symmetrically arranged and respectively arranged at two opposite sides of the

410, wherein the third

230 is arranged at the same side as the first

210, and the fourth

240 is arranged at the same side as the second

220; correspondingly, the

310 and the

320 are symmetrically disposed, and the first rotating

412 on the

410 and engaged with the

310 and the first rotating

412 on the

410 and engaged with the

320 are also symmetrically disposed.

The

410 is a basic structural component of the folding mechanism, and the

410 can provide a mounting base for other components of the folding mechanism, thereby allowing the other components of the folding mechanism to be mounted directly or indirectly on the

410. Optionally, the

410 is a sheet member to reduce the footprint. Specifically, the

410 may be a sheet metal piece that enables the

410 to have sufficient strength at a smaller thickness without affecting the support performance of the

410.

The

410 is provided with a plurality of first rotating

412, and the

310 and the

320 each include a second rotating

302, and the plurality of second rotating

302 can be mutually matched with the plurality of first rotating

412 in a one-to-one correspondence manner, so that the

310 and the

320 can form a stable rotation matching relationship with the

410, and the

310 can be integrally connected with the

320 through the

410.

Specifically, the number of the first rotating

412 may be two, one of the two first rotating

412 is matched with the second rotating

302 of the

310, and the other one is matched with the second rotating

302 of the

320, in which case, the two second rotating

302 may be symmetrically arranged on the

410 to ensure that the folding mechanism has better folding performance. Of course, in the case where the number of the first rotating

412 engaged with the

310 is plural, the aforementioned plural first rotating

412 may be arranged at intervals in the axial direction of the

410, that is, the rotational axial direction of the second rotating

302. Correspondingly, a plurality of first

412 may be disposed in cooperation with the

320. By adopting the above technical scheme, the reliability of the connection relationship and the rotation fit relationship between the

310 and the

320 can be further improved. The rotation axis of the

302 may be a direction a in fig. 1.

The first

412 and the second

302 are mutually matched rotating structural members, for example, the two may be shaft hole matched structures. In another embodiment of the present application, one of the first

412 and the second

302 may be an arc-shaped groove-like structure, and the other may be an arc-shaped block-like structure, in which case the stability of the rotation fit relationship between the first

412 and the second

302 may be improved to some extent. Also, the

410 may be an arcuate structure to provide a better forming basis for the first

412 and to reduce the overall size of the

410.

As shown in fig. 1 to 5, the

310 is disposed on the first

210, and the first

210 is in a rotating fit with the

310. The

320 is disposed on the second

220, and the second

220 is in rotation fit with the

320. In the case where the above folding mechanism is applied to an electronic apparatus, both the first

210 and the second

220 can provide a supporting function for the

610. In order to prevent the existence of the

310 and the

320 from affecting the supported effect of the

610, the

310 is disposed on a side of the first

210 facing away from the

610, and correspondingly, the

320 is disposed on a side of the second

220 facing away from the

610. Alternatively, the

310 and the first

210, and the

320 and the second

220 may be rotatably coupled to each other through a rotation structure such as a shaft hole. In addition, the maximum relative rotation angle between the first

210 and the

310 may be equal to the maximum relative rotation angle between the second

220 and the

320, so that the symmetry of the whole folding mechanism is better, and the overall performance of the folding mechanism is improved.

Optionally, the third

230 is rotatably mounted on the first

210, so that the first

210 rotates along with the

310 and simultaneously drives the third

230 to rotate; correspondingly, the fourth

240 is rotatably mounted on the second

220, so that the fourth

240 can be driven to rotate together during the rotation of the second

220 along with the

320. Specifically, the shapes of the third

230 and the fourth

240 may be determined according to practical requirements, for example, both may be long-strip plate-shaped structural members, and by means of the shaft hole matching structure, the third

230 may be rotatably mounted on the first

210, and the fourth

240 may be correspondingly rotatably mounted on the second

220. Of course, the third

230 and the fourth

240 may have other shapes, and any corresponding two of the above may also form a rotation fit relationship through other rotation members, which is not listed here in order to avoid brevity.

The folding mechanism has an unfolded state and a folded state, and the entire folding mechanism can be switched between the folded state and the unfolded state by relatively moving both the

310 and the

320 based on the

410. In addition, during the state switching process of the folding mechanism, not only the first

210 and the second

220 move relative to the

410, but also, as shown in fig. 9 and 10, relative movement occurs between the first

210 and the

310, and between the second

220 and the

320.

The first

210 and the second

220 each have a

203 and a second side that are opposite to each other, and the first

210 and the second

220 each have a

201 and a

202 that are opposite to each other, and the

201 of the first

210 and the second

220 are disposed away from the

410, that is, the first

210 and the second

220 are disposed on the same side of the

410, each

201 serves as a screen support surface to support the

610, and the

202 that is opposite to the

201 is disposed toward the base 410 in the first

210 and the second

220. Correspondingly, the third

230 and the fourth

240 are also correspondingly provided with a

201 and a

202,

referring to fig. 9 and 10, in the unfolded state, the respective

203 of the first and second

210 and 220 are each located between the respective second sides, and the respective first, second, third and fourth

210, 220, 230, 240 are disposed flush away from the

201 of the

410. Also, in the unfolded state, the third and fourth

230 and 240 are located between the first and second

210 and 220, and in particular, the third and fourth

230 and 240 may be integrally located between the second sides of the first and second

210 and 220, or the third and fourth

230 and 240 may be located between a partial structure of the first

210 and a corresponding partial structure of the second

220.

As shown in fig. 10, in the folded state, the distance between the

203 of the first and second

210 and 220 is greater than the distance between the second sides of the first and second

210 and 220.

In detail, in the unfolded state, the first

210, the second

220, the third

230 and the fourth

240 are flush, so that the four can provide support for the

610 and the like, and the

610 can be ensured to stably maintain the unfolded state. Referring to fig. 9 and 10, in the process of switching the folding mechanism from the unfolded state to the folded state, the angle of relative rotation of the first

210 and the second

220 is greater than 180 °, so that the distance between the respective

203 of the first

210 and the second

220 is greater than the distance between the respective second sides in the folded state.

In addition, as described above, the folding mechanism may be applied to the stand structure, and when the stand structure is folded to a folded state along with the folding mechanism, as shown in fig. 10, the

110 and the

120 are stacked, and the screen supporting surfaces of the

110 and the

120 are disposed in parallel, so that two portions of the

610 supported by the

110 and the

120 can be parallel to each other. In the process of assembling the first

210 and the

310, a rotational connection structure (such as a rotational assembly mentioned below) between the first

210 and the

310 may be disposed at a position of the first

210 near the

203 thereof, so that when the first

210 rotates relative to the

310, the first

210 can substantially take the second side thereof as an axis, thereby preventing the

203 of the first

210 from rotating in a direction approaching the

310, and simultaneously ensuring that the second side of the first

210 always provides a better supporting effect for the components such as the

610. Accordingly, the above embodiments can also be referred to in the process of assembling the second

220 and the

320.

Based on the above, as shown in fig. 10, the interval between the second sides of the first and second

210 and 220 is equal to or substantially equal to the interval between the screen support surfaces of the first and

110 and 120 in the bracket structure in the folded state. Accordingly, it can also be considered that the interval between the first side edges 203 of the first and second

210 and 220, respectively, is greater than the interval between the first and

110 and 120 in the folded state.

More specifically, a specific value of the interval between the first side edges 203 of the first

210 and the second

220 in the folded state in the folding mechanism may be determined according to parameters such as the widths of the first

210 and the second

220, which are directions perpendicular to the rotation axis direction of the

302, more specifically, may be direction B in fig. 9.

It should be noted that, in order to ensure that the relative rotation angle between the first

210 and the second

220 can exceed 180 °, it is necessary to ensure that the first

210 can move relative to the

310, and it is necessary to ensure that the second

220 can move relative to the

320. More specifically, in order to achieve the foregoing object, parameters such as specific structures and/or mounting positions of the components of the

410, the

310, the

320, and the like may be limited.

Taking the first

210 as an example, in the unfolded state, as shown in fig. 9, and in combination with fig. 10, it is necessary to ensure that the portion between the rotational connection position of the first

210 and the

310 and the

203 of the first

210 is spaced from the

310, the

410, the

110, and the like, so as to provide a space for avoiding the rotation of the first

210 in a direction approaching the

310. Similarly, the same is true in designing and arranging the

320, the

410, the

120, and the like corresponding to the second

220.

In order to minimize the thickness of the entire folding structure and thus the overall thickness of the electronic device during the design of the folding mechanism, the interval between the first

210 and the base 410 in the unfolded state may be appropriately reduced, in which case, since the third

230 and the fourth

240 are disposed between the first

210 and the second

220, the

410 may have a preset-sized interval between the center of the direction B and the

203 of the first

210 in fig. 9 in the direction B of fig. 9, so that the first

210 and the base 410 may be prevented from interfering with each other as much as possible during the rotation of the first

210 relative to the

410.

As described above, the third and fourth

230 and 240 may be rotated together with the first and second

210 and 220, respectively, in the course of rotating the same from the unfolded state to the folded state. Further, in the above-described rotation process, as shown in fig. 10, by enabling the third

230 to rotate relative to the first

210, even if the third

230 is interfered by the base 410 or the like, the rotation process of the first

210 relative to the

410 is not hindered, and the first

210 is ensured to be rotatable to a predetermined position. Correspondingly, the fourth

240 may also be designed correspondingly with reference to the third

230.

The embodiment of the application provides a folding mechanism, which includes a first

210, a second

220, a third

230, a fourth

240, a

310, a

320 and a

410, wherein the first

210 is rotationally connected with the

310, the second

220 is rotationally connected with the

320, the third

230 is rotationally connected with the first

210, and the fourth

240 is rotationally connected with the second

220. The

310 and the

320 are rotatably connected to the

410, and the first

210 and the second

220 not only can rotate with the

310 and the

320, but also can rotate with respect to the

310, and the second

220 can rotate with respect to the

320, so that the folding mechanism can be switched between a folded state and an unfolded state.

In the unfolded state, the first side edges 203 of the first

210 and the second

220 are located between the second side edges of the first screen support plate and the second screen support plate, and the third

230 and the fourth

240 are located between the first

210 and the second

220, and the first

210, the second

220, the third

230 and the fourth

240 are arranged flush with the

201 of the

410, so as to provide a reliable supporting function for the

610 of the electronic device, and ensure that the

610 can be in a flattened state, and provide a larger display area for a user.

In the folded state, the space between the respective

203 of the first

210 and the second

220 is larger than the space between the respective second sides, so that the first

210 and the second

220 form a flaring structure, and the flaring of the flaring structure faces the

410. In addition, in the use process of the electronic equipment adopting the folding mechanism, the electronic equipment in a folded state is relatively small in overall size, relatively high in portability degree and convenient for users to carry.

In addition, by providing the third

230 and the fourth

240, gaps between the first

210 and the third

230, between the second

220 and the fourth

240, and between the third

230 and the fourth

240 are relatively smaller, and the space between the first

210 and the second

220 and the base 410 in the folding mechanism in the unfolded state can be reduced to some extent, the thickness of the folding mechanism is reduced, and thus the thickness of an electronic device employing the folding mechanism is reduced. Meanwhile, the

410 and the

610 of the electronic device may be separated by the third

230 and the fourth

240, thereby preventing the

610 from being damaged and improving the service life of the first display module.

Optionally, as shown in fig. 1 and fig. 3, the folding mechanism provided in the embodiment of the present application may further include a

751, a

752, a first

741 and a second

742, where the first

741 is in a limit fit with the

751 in the rotation direction of the

302, and the second

742 is in a limit fit with the

752 in the rotation direction of the

302. Specifically, the

751 and the

752 may be rotatably connected to the

410, the first

741 may be sleeved on the

751, and the second

742 may be sleeved on the

752, and the two groups of components may be correspondingly formed into an interference fit relationship. In another embodiment of the present application, the first

741 and the first connecting

751 may be formed in a limited fit relationship by means of a key connection, and correspondingly, the second

742 and the second connecting

752 may be formed in a limited fit relationship by means of a key connection, which may further improve the stability of the above-mentioned limited fit relationship.

Meanwhile, the first

741 is matched with the

310, the second

742 is matched with the

320, the first

741 and the second

742 are connected through a gear synchronization mechanism, and the

310 and the

320 synchronously rotate through the gear synchronization mechanism. Under the condition of adopting the technical scheme, the capability of synchronous rotation between the first

210 and the second

220 can be ensured, so that no matter which one of the two is driven, the other one can be driven to rotate relative to the base 410 through a gear synchronous mechanism and the like, the rotation angles of the first

210 and the second

220 relative to the base 410 are always the same, and the comprehensive performance of the whole folding mechanism is improved.

Specifically, the fitting relationship between the first

741 and the

310 may be determined based on actual parameters such as the directions in which the rotational axes of the

751 and the

302 are located. For example, when the axial direction of the

751 and the rotational axial direction of the first

412 overlap each other, the first

741 and the

310 may be fixed to each other. In another embodiment of the present application, the rotational axis of the

751 may be misaligned with the rotational axis of the second

302, in which case it is necessary to enable relative movement between the first

741 and the

310.

Specifically, by providing a sliding groove on one of the

741 and the

310, and providing a sliding rod on the other, the sliding rod cooperates with the sliding groove, so that even if the rotation axis of the first connecting

751 does not coincide with the rotation axis of the second

302, it is ensured that the

310 can drive the

741 to rotate together with the

410. Further, under the action of the gear synchronization mechanism, the second

742 can correspondingly rotate and drive the

320 to rotate relative to the

410, so as to achieve the purpose of synchronous rotation of the first

210 and the second

220.

Alternatively, the gear synchronizing mechanism includes a

781 provided on the

751, a

782 provided on the

752, a

791 and a

792, the

781 being engaged with the

791, the

791 being engaged with the

792, the

792 being engaged with the

782. With the above technical solution, the

310 and the

320 can be rotated synchronously by using relatively few components.

Specifically, the

751 and the

781 may constitute a gear shaft, correspondingly, the

752 and the

782 may also constitute a gear shaft, and since the rotation angle of each of the

310 and the

320 with respect to the

410 is generally not greater than 180 °, the

781 may cover one-fourth turn to one-half turn on the

751, and correspondingly, the

782 may cover one-fourth turn to one-half turn on the

752, which may substantially ensure that the

781 and the

782 may provide a reliable synchronization effect, and may reduce production costs.

Further, the folding mechanism may further include a

731, a

732, and an

720, the

731 and the

732 are sleeved on the

751, the

731 is fixed on the first

741, the

732 is rotatably engaged with the

751 in a rotation direction of the

302, and the

720 is in a stretched state or a contracted state under the condition that the

731 and the

732 are relatively rotated.

Specifically, the specific structures of the

731 and the

732 may be the same, and they are buckled, and in the process of rotating the

731 and the

732 relatively, the maximum distance between the

731 and the

732 may be greater than the initial distance (i.e., the minimum distance) between the

731 and the

732, in this case, the

720 may be stretched or compressed, so that the

720 may apply an elastic restoring force to the

731 and/or the

732, so as to promote the

731 and the

732 to restore to the buckled state, i.e., the state with the minimum distance between the

731 and the

732.

By adopting the above technical scheme, the relative position between the

731 and the

732 in the buckling state can be designed, so that when the folding mechanism is in the folding state and the unfolding state, the

731 and the

732 are both in the buckling state, and as long as the folding mechanism is no longer in the folding state or the unfolding state, the space between the

731 and the

732 is increased due to relative rotation, so that the

720 is stretched or compressed. Therefore, under the above technical scheme, the folding mechanism can be easily kept in the unfolded state and the folded state by the

720, and the unfolded state or the folded state of the folding mechanism can be prevented from being damaged by small external force, which is inconvenient for users.

Optionally, the folding mechanism further comprises a mounting

714, wherein the mounting

714 is fixed to the

410, and the mounting

714 is fixed to the

410 by welding or connecting a connecting member. The mounting

714 is provided with a first limiting

711 and a second limiting

712 which are opposite and fixed along the rotation axis of the second

302, the

731, the

732 and the

720 are all disposed between the first limiting

711 and the second limiting

712, and the

720 is disposed on a side of the

732 facing away from the

731. Under the condition of adopting the technical scheme, the first limiting

711 and the second limiting

712 can provide the function of a positioning base, so that on one hand, the reliability of the

720 can be improved, and on the other hand, the installation difficulty of the

720 can be reduced.

In the above-described embodiment, the

731 and the

732 are rotated relative to each other, that is, the

720 is compressed, so that the

720 applies an elastic force to the

731 and the

732 to return the same. To further prevent the difficulty of maintaining the folding mechanism in the folded state and the unfolded state, the

720 may have a pre-tightening force, that is, the

720 may be in a compressed state in a state in which the

731 and the

732 are engaged with each other.

Specifically, the

731 and the

741 may be formed by welding or integrally molding, and the

741 may be brought into a limit fit relationship with the first connecting

751 in the rotation direction of the

302 through the

731. More specifically, the

731 and the

751 may be connected to each other by a key connection, and the inner circumferential surface of the

732 may be a circular structure, so as to ensure that the

732 can normally rotate with respect to the

751, and of course, in order to prevent the

732 from rotating with the

751 together with the

731 during the rotation of the

751 with the

741, the

732 may be optionally engaged with the base 410 in a limited manner in the rotation direction of the

302.

In addition, the first limiting

711, the second limiting

712 and the mounting

714 may be formed in an integrally formed manner, so as to improve the stability of the connection relationship between the three. The first and

711 and 712 may be provided with coupling holes such that opposite ends of the first and

751 and 752 are respectively mounted on the first and

711 and 712. More specifically, the fitting holes may be through holes, and the

751 and the

752 may be led out of the first limiting

711 and the second limiting

712, and then, by means of the structure of the

770 or the like, the

751 and the

752 may be brought into a stable rotational fit relationship with the mounting

714. The

791 and the

792 may be rotatably mounted on the

711 or the

712 by a coupling shaft or the like, so that the

791 and the

792 can be stably engaged with the

781 and the

782.

Optionally, the mounting

714 is further provided with a third limiting

713, where the third limiting

713 is located between the first limiting

711 and the second limiting

712, specifically, the third limiting

713 may also be an integrally formed component of the mounting

714, and the third limiting

713 may also be provided with a through hole for the first connecting

751 and the second connecting

752 to pass through. A

731, a

732, and an

720 are provided between the

711 and the

713, and between the

712 and the

713. With the adoption of the scheme, the stability of the folding mechanism in the folded state and the unfolded state can be further improved. Specifically, the spacing between the first limiting

711 and the third limiting

713, and the spacing between the second limiting

712 and the third limiting

713 may be the same, in which case the parameters such as the structure of each

731 may be the same, the parameters such as the structure of each

732 may be the same, and the parameters such as the structure of each

720 may be the same, thereby reducing the difficulty of spare parts and assembly.

Alternatively, the first and

741 and 742 are each fixed with a

731, and each

731 is provided with a

732 and an

720. That is, in the case where the folding mechanism is in the unfolded and folded state, both the side of the

741 and the side of the

742 may be elastically acted on by the

720, which may prevent the folding mechanism from being out of the unfolded state and the folded state, thereby improving the ability of the folding mechanism to stably maintain the unfolded state and the folded state. Of course, in both the first and

741 and 742, a plurality of sets of the first and

731 and 732 and the

720 may be disposed to further enhance the ability of the folding mechanism to maintain the folded state and the unfolded state.

As described above, by bringing the

732 into a desired limit relationship with the base 410 or the like, the

732 is prevented from rotating with the

731 when the

731 is rotated, and the

731 and the

732 cannot be moved axially. In the above-described embodiment, when the first and

741 and 742 are each provided with the

731, the connecting

733 may be provided between the

732 that are respectively engaged with the two

731, and in this case, the

732 may be mounted on the first and second connecting

751 and 752, respectively, so as to reduce the difficulty of assembly, and the two

732 may be provided with the ability to operate synchronously, so that the ability to maintain the folding mechanism in the folded state and the unfolded state is further improved, and in addition, the two

732 are connected by the connecting

733, so that in the process of designing and assembling the

732, no limit structure need to be separately provided for the

732, and under the combined action of the connecting

733 and the two

732, the

732 may be rotated with respect to the first and second connecting

751 and 752, respectively, so that the

732 may not rotate with the rotation of the

731 is basically ensured.

As described above, the third

230 and the fourth

240 may each be a long strip-shaped plate-like structural member, and the first

210, the second

220, the third

230, and the fourth

240 may be made equal in size in the direction a in fig. 1, that is, the foregoing four are disposed side by side. Optionally, in the case that the folding mechanism includes the above-mentioned first

741 and the second

742, in another embodiment of the present application, as shown in fig. 5, the first

210 and the second

220 are both provided with a first avoidance gap, the third

230 is rotatably mounted to the first avoidance gap of the first

210, the fourth screen support plate is rotatably mounted to the second avoidance gap of the second screen support plate, the side edge of the third

230 is flush with the

203 of the first

210, and the side edge of the fourth

240 is flush with the

203 of the second

220, so that the first

210 and the third

230, and the second

220 and the fourth

240 can correspondingly form a structure with rectangular or approximately rectangular outer contours, so as to provide a reliable supporting function for the

610 in the electronic device.

Also, the third

230 may be disposed opposite to the first

741, and the fourth

240 may be disposed opposite to the second

742, so that even though the distance between the first

741 and the second

742 and the first

210 and the second

220 in the thickness direction of the

410 is relatively small, the first

210 and the second

220 may be provided with a dodging effect by the third

230 and the fourth

240, respectively, to ensure that the first

210 and the second

220 can be rotated to the state shown in fig. 10. Of course, in the above technical solution, the structure of the

310 and the

320 matching with the

410 is also required to be designed, so that the positions of the

310, the

320 and the base 410 corresponding to the two positions do not hinder the relative rotation between the first

210 and the second

220.

In addition, in the case where the number of the first and

741 and 742 is plural, the first avoidance notches of the first and second

210 and 220 may be plural, and correspondingly, the number of the third and fourth

230 and 240 may be plural.

As described above, the first

210 and the third

230 may form a rotation fit relationship through the shaft hole structural member, alternatively, the opposite ends of the first avoidance gap of the first

210 may be provided with the

530, the opposite ends of the third

230 may be provided with the

540, one of the

530 and the

540 is provided with the arc slot, the other one includes the arc insert, the arc slot is rotationally connected with the arc insert, and the purpose of rotational connection between the first

210 and the third

230 is achieved through the arc insert and the arc insert with larger fit area, so that the reliable rotation connection relationship between the two can be ensured. Correspondingly, the rotational connection between the second

220 and the fourth

240 may also be formed by the fifth

530 and the sixth

540.

Further, as shown in fig. 1 to 6, the folding mechanism may further include a fifth

250, the fifth

250 being mounted on the

410, alternatively, the fifth

250 may be fixed to the

410 by means of bonding or connection, etc. The third

230 and the fourth

240 are respectively provided with a second avoidance gap, and in the unfolded state, the fifth

250 is embedded into the second avoidance gap of the third

230 and the second avoidance gap of the fourth

240. Under the condition of adopting the above technical solution, the size of the gap between the third

230 and the fourth

240 can be further reduced, by means of the second avoidance gaps of the third

230 and the fourth

240, in the process that the third

230 and the fourth

240 rotate relative to the

410, the third

230 and the fourth

240 can better avoid the structures such as the

410, the first

741 and the second

742, and the maximum angle that the third

230 and the fourth

240 can rotate relative to the

410 is enlarged, and then the gap between the third

230 and the fourth

240 can be designed to be smaller, and the supporting effect on the components such as the

610 is improved.

As described above, the fifth

250 may be fixed to the

410, and in another embodiment of the present application, the fifth

250 may be movably coupled to the base 410 in its thickness direction, and in particular, the fifth

250 may be movably mounted to the

410 by pins, thereby allowing the fifth

250 to move relative to the base 410 during operation of the folding mechanism.

Based on the above, in the unfolded state, the fifth

250 has a first pitch from the base 410 in the thickness direction thereof; in the folded state, the fifth

250 has a second interval with the base 410 in the thickness direction thereof, the second interval being smaller than the first interval. Colloquially, the fifth

250 moves in a direction approaching the base 410 during the switching of the folding mechanism from the unfolded state to the folded state; the fifth

250 moves away from the base 410 during the switching of the folding mechanism from the folded state to the unfolded state. By adopting the technical scheme, the accommodating space of the folding mechanism in the folded state can be further enlarged, so that the problem that the first display module is folded to generate folds is further prevented.

In addition, an elastic member or the like may be provided between the fifth

250 and the

410, so that the first display module may be pressed against the fifth

250 to move in a direction approaching the base 410 in the process of being folded, and the elastic member may be driven to return by its own elastic force in the process of gradually flattening the first display module. Alternatively, a power driving member may be disposed between the fifth

250 and the

410, and the power driving member may drive the fifth

250 and the base 410 to move toward or away from each other.

In addition, as described above, the first

210 may also rotate relative to the

310 during rotation of the

310 relative to the

410. More specifically, the driving force may be lifted by the flexible display screen in the electronic device during the rotation of the first

210 toward the

310; for the rotation of the first

210 away from the

310, the first

210 may be driven by means of an elastic restoring force by providing an elastic member in the folding mechanism, so that when the

310 and the

320 rotate to the unfolded state, the first

210 may be flush with the screen support surface of the

110, so as to provide a supporting function for the flexible display screen together. In another embodiment of the present application, a power driving device, such as an electric motor, may be further disposed between the first

210 and the

110, and the first

210 and the

310 may be driven to rotate opposite to or opposite to each other by the power driving device. Of course, the

320 and the second

220 may be designed and manufactured according to any of the above-mentioned technical schemes.

Based on the above embodiment, optionally, as shown in fig. 5 and 10, a side of the third

230 and a side of the fourth

240, which are close to the fifth

250, are respectively provided with a first overlapping edge, and opposite sides of the fifth

250 are respectively provided with a second overlapping edge, and in the unfolded state, each second overlapping edge overlaps the corresponding first overlapping edge. Specifically, the shapes and sizes of the first and second overlapping edges may be mutually adapted, and specifically, the first and second overlapping edges may be stepped structural members to promote the stability of the fifth

250 overlapping the third and fourth

230 and 240.

In the case of the above-described technical solution, the fifth

250 may overlap the third

230 and the fourth

240 in the unfolded state. In this case, the third

230 and the fourth

240 can also provide driving force for the movement of the fifth

250 relative to the

410, and further, under the circumstance that the first

210 and the second

220 can automatically rotate along with the movement of the folding mechanism, it is not necessary to provide driving parts for the fifth

250, on the one hand, the number of parts in the folding mechanism is reduced, on the other hand, the assembly efficiency of the folding mechanism can be improved, and the production cost is reduced.

Optionally, as shown in fig. 1 and fig. 10, the folding mechanism further includes a

420, where the

420 is fixedly connected to a side of the base 410 away from the first

210, and the

420 can provide protection for the

410, and can be used to shield the folding mechanism, so that when the folding mechanism is applied to an electronic device, the number of exposed parts of the electronic device is reduced as much as possible, on one hand, the appearance performance of the electronic device is improved, on the other hand, the dustproof and waterproof performance of the electronic device is also improved, and the reliability of the electronic device is improved. The

420 may be fixed on the

410 by means of adhesion or the like, and in another embodiment of the present application, the

410 and the

420 may be detachably and fixedly connected together by a threaded connection member such as a screw, so as to improve connection reliability between the two.

Meanwhile, in the folded state, the projection of the

420 in the plane where the distribution direction of the first

210 and the second

220 and the rotation axis of the second

302 are located covers the third

230, the fourth

240, the

310, the

320 and the

410, so as to ensure that the

420 has a better shielding effect. It should be noted that the distribution direction of the first

210 and the second

220 may be the direction B in fig. 9.

Specifically, by designing parameters such as the structure, the size, the installation position, and the like of the

420 according to parameters such as the specific structure and the size of other components in the folding mechanism, when the folding mechanism is in a folded state, the folding mechanism is seen from the side where the

420 is located, and the third

230, the fourth

240, the

310, the

320, and the base 410 in the folding mechanism can be all blocked by the

420. More specifically, in order to improve the shielding effect of the

420 on other components, as shown in fig. 7, the

420 may be an arc-shaped structural member, which may further improve the tightness of connection between the

420 and the

110 and the

120 in the bracket structure, and further improve the sealing performance of the bracket structure and the electronic device.

Further, as shown in fig. 2 and 3, the

310 and/or the

320 includes a relief structure provided with a

303, and in the unfolded state, the side edge of the

420 is received in the

303. Specifically, the parameters such as the position and the size of the avoiding

303 can be flexibly determined according to the parameters such as the extending position and the thickness of the

420, which are not limited herein.

More specifically, the

310 and the

320 are both provided with the avoiding

303, in this case, an abdication space can be provided for the side edges of the

420 by means of the avoiding

303, so that the two side edges of the

420, which are oppositely arranged along the direction B in fig. 9, can extend relatively more toward the direction close to the first

210 and the second

220, and the bending degree of the

420 is further improved, so that when the folding mechanism is in the folded state, the gap between the

420 and the

110 and the

120 is smaller, and the matching reliability between the

420 and the

110 and the

120 is higher.

Taking the

310 as an example, in the case where the

310 is provided with the avoidance structure, in order to ensure that the structural strength of the

310 can still meet the use requirement, as shown in fig. 3, the position where the avoidance structure is located may be protruded to a side deviating from the

303. Based on the above, further, the first

210 may be provided with a receiving sink, and at least a portion of the avoidance structure is received in the receiving sink in the folded state, thereby preventing the adverse effect on the maximum relative rotation angle between the first

210 and the

310 due to the aforementioned avoidance structure provided on the

310.

Specifically, the position, width, depth, and other parameters of the accommodating sink may be flexibly determined according to the actual parameters of the avoidance structure, which is not limited herein. More specifically, the

320 may also be provided with a corresponding avoiding structure, and the second

220 is correspondingly provided with a receiving slot, so as to improve symmetry of the folding mechanism and further improve overall performance of the folding mechanism.

In order to improve the compactness of the whole folding mechanism, as shown in fig. 3, the

410 may be provided with a receiving

411, in which a first

412 is disposed in the receiving

411, and by accommodating at least a portion of the second

302 of the

310 and at least a portion of the second

302 of the

320 in the manner of receiving and receiving the

411, the space occupied by the folding mechanism in the thickness direction of the base 410 may be reduced, thereby reducing the thickness of the whole electronic device and improving the overall product performance. It should be noted that, the thickness direction of the base 410 may be specifically a direction perpendicular to the direction a in fig. 1 and the direction B in fig. 9.

Specifically, the plurality of first

412 may be disposed in one receiving

411 by enlarging the size of the receiving

411, and in another embodiment of the present application, in order to improve the coupling stability between the first and

310 and 320 and the

410, the first and

310 and 320 are prevented from interfering with each other, and the receiving

411 may be disposed in plurality corresponding to the number of the first

412. Of course, in order to ensure that at least a portion of the second

302 received in the receiving

411 is normally relatively engaged with the first

412, the specific structures of the first

412 and the second

302 may be adapted to the parameters such as the structure and the size of the receiving

411 during the design and the processing.

Further, in order to maximize the reliability of the rotational engagement relationship between the first

412 and the second

302 located in the receiving

411, alternatively, as shown in fig. 2 and 3, one of the first

412 and the second

302 includes a slider, the other one is provided with a slide groove, the slide groove is slidably engaged with the slider, the engagement area between the slide groove and the slider is relatively large, and the space in the receiving

411 can be maximally utilized. Of course, the sliding groove and the sliding block are both arc-shaped structures, so that the

310 and the

320 can both form a running fit relationship by means of the sliding fit sliding groove and the sliding block.

In order to further improve the stability of the rotation fit relationship between the

310 and the

320 and the

410, as shown in fig. 3, the opposite sides of the

411 are provided with the

412, and correspondingly, the opposite sides of the

310 and the

320 are provided with the

302, and taking the

310 as an example, in the case that the two

302 on the opposite sides are in one-to-one correspondence with the two

412 in one

411, the rotation of the

310 relative to the base 410 can be further prevented from deviating from the rotation axis thereof, so that the stability of the rotation fit relationship between the

310 and the

410 is improved. Correspondingly, in the case of the above-mentioned technical solution, the rotation fit relationship between the

320 and the

410 is relatively more stable.

In the case where the first

412 is disposed in the receiving

411, in order to ensure a good rotation-fit relationship between the first

412 and the second

302 while minimizing the width of the base 410 (i.e., the dimension of the base 410 in the direction B of fig. 9), alternatively, a plurality of first

412 may be disposed at intervals or offset in the rotation axis direction of the second

302. That is, the plurality of first

412 may be distributed along the rotation axis direction of the second

302 with a predetermined size of space between any adjacent two of the first

412. Alternatively, in the case where the plurality of first

412 are distributed along the rotation axis direction of the second

302, the plurality of first

412 may be grouped in pairs, and two first

412 in any group may be disposed adjacent to each other in the rotation axis direction of the second

302, that is, there is no space between two first

412 in a group in the rotation axis direction of the second

302.

Alternatively, the first

210 may be rotatably coupled to the

110 in a bracket structure, and as described above, the

310 is fixedly coupled to the

110, in which case the first

210 may be enabled to form a rotational fit relationship with the

310. In order to facilitate installation, as shown in fig. 3, the folding mechanism may include a rotating assembly, where the first

210 may be rotatably connected to the

310 through a plurality of rotating assemblies, and under the action of the plurality of rotating assemblies, on one hand, the stability of the running fit between the first

210 and the

310 may be improved, and on the other hand, the optional type of structure of the rotating assembly may be further enlarged, so as to reduce the design and processing difficulty.

As shown in fig. 3, the rotating assembly specifically includes a third

510 and a fourth rotating portion 520, one of the third

510 and the fourth rotating portion 520 is connected to the

310, and the other is connected to the first

210. The third

510 includes the inserted block, and the fourth rotating part 520 is equipped with the slot, and inserted block and slot all are equipped with the arc mating surface, and inserted block and slot pass through arc mating surface normal running fit, can guarantee to have great normal running fit area between third

510 and the fourth rotating part 520, promote the reliability of rotation connection relation between the two. In addition, in the case of adopting the above-mentioned technical solution, by locating the rotation axes of the

510 and the fourth rotation portion 520 on the first

210 or on the side of the first

210 facing away from the

310, the space between the first

210 and the

310 can be made relatively smaller while ensuring that the rotation assembly is located on the side of the first

210 facing the

310, so that the space occupied by the entire folding mechanism in the thickness direction of the base 410 can be further reduced.

Specifically, by adapting the shapes and the sizes of the insert block and the slot, the two can be ensured to form a rotation fit relation; the slot may have a structure with two open sides, so that the insert block may be mounted into the slot from one side of the slot, and the maximum relative rotation angle between the insert block and the slot may be limited by other structures such as the

310 and the

110. In addition, the relative positional relationship between the first

210 and the

310 in the rotation axis direction of the

302 may be limited by providing detachable limiting structures at two opposite ends of the first

210 in the rotation axis direction of the

302, so as to prevent the relative movement of the first

210 and the first housing seat in the aforementioned direction.

In another embodiment of the present application, as shown in fig. 2, the fourth rotating portion 520 includes a limiting member and a mating member, where the limiting member and the mating member enclose a slot, and the mating member is provided with an arc-shaped mating surface. In the rotation axis direction of the second

302, the limiting portions of the two fourth rotating portions 520 in the plurality of fourth rotating portions 520 are disposed opposite to each other, and at least two third

510 are disposed between or outside the two limiting members disposed opposite to each other. In the structure of the folding mechanism shown in fig. 5, the respective slots of the two sets of fourth rotating parts 520 provided at opposite ends of the first

210 are provided outward, that is, the slots of the two sets of fourth rotating parts 520 are provided opposite to each other, in which case, as shown in fig. 3, the two sets of third

510 engaged with the aforementioned two sets of fourth rotating parts 520 should be provided outside the two sets of fourth rotating parts 520, respectively.

Under the above technical solution, the limiting portions of the two fourth rotating portions 520 may be used to limit the at least two third

510, so as to ensure that the third

510 and the fourth rotating portions 520 can form a limiting fit relationship in the rotation axis direction of the second

302, and ensure that the first

210 and the

310 form a stable fit relationship in the rotation axis direction of the second

302.

In order to improve the stability of the motion of the folding mechanism, the number of the

310 and/or the

320 is optionally plural, and optionally, the number of the

310 and the

320 are the same and are plural, and by arranging the plurality of

310 and the plurality of

320 in groups, the stability of the motion between the

110 and the

120 can be further improved. As described above, the

310 may be rotatably connected with the first

210, the

320 is rotatably connected with the second

220, and in case that the number of the

310 and the

320 is plural, at least one

310 may be rotatably connected with the first

210, and at least one

320 may be connected with the second

220. More specifically, as shown in fig. 2, the

310 located at opposite ends of the base 410 may be rotatably connected to the first

210 through the above-mentioned rotating assemblies, and the other

310 may no longer be connected to the first

210, so that the processing and assembling difficulty of the whole folding mechanism may be reduced while ensuring a higher stability of the rotational fit between the

310 and the first

210. Correspondingly, the

320 may also be the same, and the description thereof will not be repeated here for brevity.

Further, as described above, the folding mechanism may be applied to a stand mechanism, and based on this, the embodiment of the present application further provides a stand structure, where the stand structure includes a

110 and a

120, and in the process of assembling the stand structure, the

310 is fixedly connected with the

110, and the

320 is fixedly connected with the

120. During the unfolding and folding process of the support structure, the

110 and the

120 can respectively drive the

310 and the

320 to move relatively, so that the

310 and the

320 can rotate relatively.

Specifically, the

310 and the

110 may be fixed to each other by bonding, riveting, clamping, screwing, or the like. In order to improve connection reliability and reduce the difficulty of disassembly and assembly, through holes or threaded holes may be formed in the

310 and the

110, which enables the

310 and the

110 to achieve a fixed connection purpose through a threaded connection. Correspondingly, the

320 and the

120 may also be fixed to each other by a threaded connection.

In addition, as described above, the first

210 and the

310 may rotate relatively, so, in order to prevent the

110 and the

310 from obstructing the rotation of the first

210, optionally, the sides of the

110 and the

310 facing the first

210 are provided with inclined avoidance support surfaces, so that, on one hand, the first

210 may be guaranteed to have the capability of rotating relative to the first housing seat 310 (and the first housing 110), and on the other hand, the inclined avoidance support surfaces may also provide a better support effect for the first screen support surface, so as to guarantee that the flexible display screen may be better supported.

Correspondingly, the side of the

120 and the

320 facing the second

220 may also be correspondingly provided with an inclined avoidance support surface, so that in the folded state, the first

210 and the second

220 may be respectively supported on the corresponding inclined avoidance support surfaces, thereby improving the stability of the action of the folding mechanism.

Based on the supporting structure provided in the foregoing embodiment, further, the embodiment of the present application further provides an electronic device, where the electronic device includes a

610 and the supporting structure described above, where the

610 includes a flexible display screen, the

610 is installed on the supporting structure, and the

610 can be supported on the

110, the

120, the first

210, the second

220, the third

230 and the fourth

240, so as to ensure that the supporting structure can provide a better supporting effect for the flexible display screen in the

610. In addition, the electronic device has a folded state and an unfolded state, and in the folded state, the distance between the first side edges 203 of the first

210 and the second

220 is larger than the distance between the second side edges of the first

210 and the second

220, so that the electronic device can provide a larger flared accommodating space for the middle part of the

610 of the electronic device, which can prevent the middle part of the

610 from generating folds in the folded process as much as possible, and improve the service life of the electronic device.

Alternatively, the sides of the first and

110 and 120 facing away from the

610 may be provided with first and

130 and 140, respectively, to provide packaging and protection for devices mounted in the first and

110 and 120. In order to further enhance usability of the electronic device, optionally, a second display module is disposed on a side of the

110 away from the

610, and parameters such as a size of the second display module may be selected according to practical situations. In the case of the above technical solution, the opposite sides of the

110 are provided with display modules. Through making electronic equipment be in the folded condition, on the one hand portable, and the user can carry out man-machine interaction with the help of second display module assembly, and under the circumstances that the user has the demand of browsing videos etc., then can use the bigger first

610 of display area through the mode of expansion electronic equipment, promote audio-visual experience etc.. Of course, the above scenario is merely illustrative, and the user may use the

610 and the second display module at the same time when conditions such as software are satisfied. In other words, during the use of the electronic device, the user may flexibly select to use the

610 and/or the second display module according to his own needs, which is not limited herein.

1. The folding mechanism is characterized by comprising a first screen supporting plate, a second screen supporting plate, a third screen supporting plate, a fourth screen supporting plate, a first shell seat, a second shell seat, a base, a first connecting shaft, a second connecting shaft, a first synchronous swing arm and a second synchronous swing arm;

the first shell seat is arranged on the first screen supporting plate, and the first screen supporting plate is in running fit with the first shell seat;

The second shell seat is arranged on the second screen supporting plate, and the second screen supporting plate is in running fit with the second shell seat;

the third screen supporting plate is rotatably mounted on the first screen supporting plate, and the fourth screen supporting plate is rotatably mounted on the second screen supporting plate;

the base is provided with a plurality of first rotating parts, and the first shell seat and the second shell seat are in one-to-one corresponding rotary connection with the plurality of first rotating parts through respective second rotating parts;

the first synchronous swing arm is in limit fit with the first connecting shaft in the rotation direction of the second rotating part, and the second synchronous swing arm is in limit fit with the second connecting shaft in the rotation direction of the second rotating part;

the first synchronous swing arm is matched with the first shell seat, the second synchronous swing arm is matched with the second shell seat, the first synchronous swing arm is connected with the second synchronous swing arm through a gear synchronous mechanism, and the first shell seat and the second shell seat synchronously rotate through the gear synchronous mechanism;

the folding mechanism has an unfolding state and a folding state, in the unfolding state, first side edges of the first screen support plate and the second screen support plate are respectively located between second side edges of the first screen support plate and the second screen support plate, the third screen support plate and the fourth screen support plate are respectively located between the first screen support plate and the second screen support plate, and the first screen support plate, the second screen support plate, the third screen support plate and the fourth screen support plate are respectively arranged in a flush manner away from the first surface of the base;

In the folded state, a distance between the first sides of the first and second screen support plates is greater than a distance between the second sides of the first and second screen support plates, respectively.

2. The folding mechanism of claim 1, wherein the gear synchronizing mechanism comprises a first engagement tooth provided to the first connecting shaft, a second engagement tooth provided to the second connecting shaft, a first gear and a second gear, the first engagement tooth being engaged with the first gear, the first gear being engaged with the second gear, the second gear being engaged with the second engagement tooth.

3. The folding mechanism according to claim 1, further comprising a first cam sleeve, a second cam sleeve, and an elastic member, wherein the first cam sleeve and the second cam sleeve are sleeved on the first connecting shaft, the first cam sleeve is fixed on the first synchronous swing arm, the second cam sleeve is in rotational fit with the first connecting shaft in the rotational direction of the second rotating portion, and the elastic member is in a stretched state or a contracted state under the condition that the first cam sleeve and the second cam sleeve relatively rotate.

4. The folding mechanism of claim 3, further comprising a mounting member fixed to the base portion, the mounting member being provided with a first stopper and a second stopper which are opposite and fixed in a rotation axial direction of the second rotating portion, the first cam sleeve, the second cam sleeve, and the elastic member are all disposed between the first stopper and the second stopper, and the elastic member is disposed on a side of the second cam sleeve facing away from the first cam sleeve.

5. The folding mechanism of claim 4, wherein the mounting member is further provided with a third stop member positioned between the first stop member and the second stop member, the first stop member and the third stop member, and the second stop member and the third stop member each being provided with the first cam sleeve, the second cam sleeve, and the elastic member therebetween.

6. A folding mechanism according to claim 3, wherein the first and second swing arms are each fixed with the first cam sleeve, and each of the first cam sleeves is correspondingly provided with the second cam sleeve and the elastic member.

7. The folding mechanism of claim 1, wherein the first screen support plate and the second screen support plate are both provided with a first avoidance gap, the third screen support plate is rotatably mounted to the first avoidance gap of the first screen support plate, the fourth screen support plate is rotatably mounted to the first avoidance gap of the second screen support plate, the side edge of the third screen support plate is flush with the first side edge of the first screen support plate, the side edge of the fourth screen support plate is flush with the first side edge of the second screen support plate, the third screen support plate is opposite to the first synchronization swing arm, and the fourth screen support plate is opposite to the second synchronization swing arm.

8. The folding mechanism of claim 7, wherein the opposite ends of the first avoidance gap of the first screen support plate are provided with fifth rotating portions, the opposite ends of the third screen support plate are provided with sixth rotating portions, one of the fifth rotating portions and the sixth rotating portions is provided with an arc slot, and the other one of the fifth rotating portions and the sixth rotating portion comprises an arc insert, and the arc slot is rotationally connected with the arc insert.

9. The folding mechanism of claim 7, further comprising a fifth support plate mounted to the base, the third screen support plate and the fourth screen support plate each being provided with a second avoidance gap, the fifth support plate being embedded within the second avoidance gap of the third screen support plate and the second avoidance gap of the fourth screen support plate in the unfolded state.

10. The folding mechanism according to claim 9, wherein the fifth support plate is movably connected to the base in the own thickness direction, and in the unfolded state, a distance between the fifth support plate and the base in the own thickness direction is a first distance; in the folded state, the distance between the fifth support plate and the base part in the thickness direction of the fifth support plate is a second distance, and the second distance is smaller than the first distance.

11. The folding mechanism of claim 9, wherein a side of the third screen support plate and the fourth screen support plate adjacent to the fifth support plate is provided with a first overlap edge, the fifth support plate is provided with a second overlap edge, and in the unfolded state, the second overlap edge overlaps the first overlap edge.

12. The folding mechanism of claim 1, further comprising a cover fixedly connected to a side of the base facing away from the first screen support plate, wherein in the folded state, projections of the cover in a plane in which the distribution directions of the first screen support plate and the second screen support plate and the rotation axis of the second rotating portion lie cover the third screen support plate, the fourth screen support plate, the first housing seat, the second housing seat, and the base.

13. The folding mechanism of claim 12, wherein the first housing seat and/or the second housing seat includes a relief structure provided with a relief groove into which a side edge of the cover is received in the unfolded state.

14. The folding mechanism of claim 13, wherein the first screen support plate and/or the second screen support plate is provided with a receiving sink, and wherein in the folded state at least a portion of the avoidance structure is received within the receiving sink.

15. The folding mechanism of claim 1, wherein the base portion is provided with a receiving groove, the first rotating portion is disposed in the receiving groove, and at least a portion of the second rotating portions of the first housing seat and the second housing seat are received in the receiving groove.

16. The folding mechanism of claim 15, wherein one of the first and second rotating portions includes a slide, the other one being provided with a slide slot, the slide slot and the slide slot being a sliding fit.

17. The folding mechanism of claim 16, wherein the first rotating portion is provided on opposite sides of the receiving slot, and the second rotating portion is provided on opposite sides of the first housing seat and the second housing seat.

18. The folding mechanism of claim 1, wherein a plurality of the first rotating portions are disposed at intervals or offset in a direction in which the rotation axis of the second rotating portion is located.

19. The folding mechanism of claim 1, wherein the folding mechanism comprises a rotating assembly, the first screen support plate is rotatably connected to the first housing base through a plurality of rotating assemblies, the rotating assembly comprises a third rotating part and a fourth rotating part, one of the third rotating part and the fourth rotating part is connected to the first housing base, the other is connected to the first screen support plate, the third rotating part comprises an insert block, the fourth rotating part is provided with an insert groove, the insert block and the insert groove are both provided with arc-shaped matching surfaces, and the insert block and the insert groove are rotatably matched through the arc-shaped matching surfaces.

20. The folding mechanism of claim 19, wherein the fourth rotating portion includes a limiting member and a mating member, the limiting member and the mating member enclosing the slot, the mating member having the arcuate mating surface;

and in the direction of the rotation axis of the second rotation part, the limiting pieces of the two fourth rotation parts in the plurality of fourth rotation parts are oppositely arranged, and the plurality of third rotation parts are arranged between the two limiting pieces in a limiting mode.

21. The folding mechanism of claim 19, wherein the number of first housing seats and/or second housing seats is a plurality, and at least one of the first housing seats is rotatably coupled to the first screen support plate via the rotation assembly, and at least one of the second housing seats is rotatably coupled to the second screen support plate via the rotation assembly.

22. A stand structure comprising a first housing, a second housing, and a folding mechanism as claimed in any one of claims 1 to 21,

the first shell seat is fixedly connected with the first shell, and one side of the first shell seat, which faces the first screen support plate, are provided with inclined avoidance support surfaces;

The second shell seat is fixedly connected with the second shell, and one side of the second shell seat, which faces the second screen support plate, are respectively provided with an inclined avoidance support surface;

in the folded state, the first screen support plate and the second screen support plate are respectively supported on the corresponding inclined avoidance support surfaces.

23. An electronic device comprising a flexible display screen and the support structure of claim 22, wherein the flexible display screen is mounted to the support structure, and wherein the flexible display screen is supportable in the first housing, the second housing, the first screen support plate, the second screen support plate, the third screen support plate, and the fourth screen support plate.