CN112178041A - Damping mechanism, folding hinge and electronic device - Google Patents

The invention relates to the field of foldable display devices and discloses a damping mechanism, a foldable hinge and an electronic device, wherein the damping mechanism comprises a base, and the base is provided with a limiting groove; the damping shaft penetrates through the limiting groove; the synchronous connecting plate is fixed at one end of the damping shaft and used for providing rotating force for the damping shaft; the sliding block can move along the axis direction of the damping shaft and can be sleeved on the damping shaft in a rotating manner along with the damping shaft; the sliding block is abutted against the inner wall of the limiting groove, and the contact surfaces of the sliding block and the inner wall of the limiting groove are respectively provided with damping teeth; when the damping shaft rotates, the tooth peaks of the inner wall of the limiting groove are in contact with the tooth peaks of the sliding block, or the tooth valleys of the inner wall of the limiting groove are in contact with the tooth peaks of the sliding block; arrange the spacing groove in, and deviate from the elastic component of spout inner wall one end butt with the sliding block, the elastic component is in the compression energy storage state to make the sliding block and spacing groove have the inner wall butt of damping tooth. The damping mechanism provided by the invention can realize the hovering effect of the synchronous connecting plate at any position by utilizing the friction force.

Damping mechanism, folding hinge and electronic device

Technical Field

The invention relates to the technical field of foldable display devices, in particular to a damping mechanism, a foldable hinge and an electronic device.

Background

With the development of intelligent electronic devices and the shift of user's demand for electronic device functions, foldable electronic devices have become high-end intelligent products for manufacturers of various large electronic devices. Folding electron device can provide bigger screen for the user, and the operation of more novelty is experienced, and is more portable, more can embody science and technology and feel.

The folding electronic devices in the market have basically solved the basic folding function of the folding electronic devices, and the folding electronic devices in the market are characterized in that the folding rotating shaft is used for realizing the inward folding and outward folding forms of the screen and expanding the screen. However, when the current folding electronic device cannot bend two screens to form a certain angle, the relative positions of the two screens are fixed, and the folding electronic device can be suspended freely.

Disclosure of Invention

The invention discloses a damping mechanism, a folding hinge and an electronic device, which are used for improving the smooth and stable folding function and realizing the free hovering of the folding electronic device.

In order to achieve the purpose, the invention provides the following technical scheme:

in a first aspect, the present invention provides a damping mechanism comprising: the base is provided with a limiting groove;

the damping shaft penetrates through the limiting groove;

the synchronous connecting plate is fixed at one end of the damping shaft and used for providing rotating force for the damping shaft;

the sliding block can move along the axis direction of the damping shaft and can be sleeved on the damping shaft in a rotating manner along with the damping shaft; the sliding block is abutted against the inner wall of the limiting groove, and the contact surfaces of the sliding block and the inner wall of the limiting groove are respectively provided with damping teeth; when the damping shaft rotates, the tooth peaks of the inner wall of the limiting groove are in contact with the tooth peaks of the sliding block, or the tooth valleys of the inner wall of the limiting groove are in contact with the tooth peaks of the sliding block;

arrange in the spacing groove, and with the sliding block deviates from the elastic component of spout inner wall one end butt, the elastic component is in the compression energy storage state, so that the sliding block with the spacing groove has the inner wall butt of damping tooth.

The damping mechanism provided by the invention comprises a base, wherein the base is provided with a limiting groove, a damping shaft penetrates through the limiting groove, one end of the damping shaft is fixedly provided with a synchronous connecting plate, and the synchronous connecting plate provides rotating force for the damping shaft, so that the damping shaft can rotate relative to the base. The last cover of damping axle is equipped with the damping sliding block, and the spacing groove is equipped with the elastic component, and this elastic component supports and locates between one side inner wall of sliding block and spacing groove for the sliding block is close to one side inner wall butt of synchronous connection board with the spacing groove all the time. It is noted that the elastic member is always in a stored energy state to provide a pressing force to the sliding block. Damping teeth are arranged between the inner wall of one side of the limiting groove close to the synchronous connecting plate and the contact surface of the sliding block. When the damping shaft rotates, the sliding block rotates along with the damping shaft, and the tooth peak of the sliding block is contacted with the tooth peak of the inner wall of one side of the limiting groove, which is close to the synchronous connecting plate; when the sliding block continues to rotate to a certain position along with the damping shaft, the tooth valley of the sliding block is in contact with the tooth peak of the inner wall of one side of the limiting groove, which is close to the synchronous connecting plate. In the rotating process, the damping tooth state between the inner wall of one side of the sliding block and the inner wall of one side of the limiting groove, which are close to the synchronous connecting plate, is changed, and the tooth peak-to-tooth peak state between the sliding block and the base is changed into the tooth peak-to-tooth valley state. In the changing process, the sliding block moves relative to the limiting groove along the axial lead direction of the damping shaft. In other words, when the synchronous connecting plate drives the damping shaft to rotate, the sliding block can slide relative to the damping shaft while rotating along with the damping shaft. The damping mechanism provided by the invention specifically works in the following processes: when the synchronous connecting plate rotates, the synchronous connecting plate drives the damping shaft and the sliding block to rotate together, the damping teeth of the sliding block extrude the damping teeth on the inner wall of one side, close to the synchronous connecting plate, of the limiting groove, and the damping teeth move towards the inner wall of one side, close to the synchronous connecting plate, far away from the limiting groove along the axial lead direction of the damping shaft and compress the elastic part in the process, and when the tooth peak of the inner wall of one side, close to the synchronous connecting plate, of the limiting groove is in contact with the tooth peak of the sliding block, the elastic part provides damping force opposite to the moving direction of the sliding.

The elastic piece in the damping mechanism provided by the invention provides damping force for the sliding block. When the limiting groove is close to the inner wall of one side of the synchronous connecting plate and the damping tooth peak of the sliding block to the tooth peak, friction force exists between the limiting groove and the damping tooth peak, and the damping mechanism provided by the invention can realize the hovering effect of the synchronous connecting plate at any position by utilizing the friction force. Meanwhile, the damping mechanism provided by the invention is simple in structure and convenient to control.

Further, the crest of the damping tooth has a plateau.

Further, the elastic member is a spring.

In a second aspect, the present invention provides a folding hinge comprising: a gear pair; any one of the two damping mechanisms in the first aspect is in meshing transmission through the gear pair;

wherein, gear pair includes: a first gear pair; the second gear pair is in meshing transmission with the first gear pair;

the damping mechanism includes: two synchronous connecting plates;

one of the synchronous connecting plates is connected with the first gear pair, and the other synchronous connecting plate is connected with the second gear pair.

The folding hinge drives the gear pair to move through two damping mechanisms of the first aspect and has double-track movement, the damping mechanisms are connected with the first gear pair through synchronous connecting plates, and the other synchronous connecting plate is connected with the second gear pair; synchronous connection board adopts the gear pair to realize synchronous linkage to make the motion more accurate, and two synchronous connection boards can realize the simultaneous movement.

Further, the first gear pair includes: the first driving gear is positioned at one end of one of the synchronous connecting plates, which is provided with the damping shaft; a first driven gear meshed with the first driving gear;

the second gear pair includes: the second driving gear is positioned at one end of the other synchronous connecting plate, which is provided with the damping shaft; a second driven gear meshed with the second driving gear;

the first driven gear is in meshed transmission with the second driven gear.

Further, the folding hinge further includes: rotating the connecting plate; the rotating connecting plate is connected with the synchronous connecting plate through a synchronous shaft;

the rotating connecting plates and the synchronous connecting plates are arranged in a one-to-one correspondence mode.

Further, the base is provided with a sliding groove; the rotating connecting plate is provided with a sliding rail corresponding to the sliding groove.

In a third aspect, the present invention provides an electronic device, including: a first housing, a second housing, and a folding hinge as described in the second aspect;

the first housing and the second housing are connected by the folding hinge;

the folding hinge is detachably connected with the first shell, and the folding hinge is detachably connected with the second shell; so that the first and second housings are bent along the folding hinge.

Through using the folding hinge of the second aspect for when first casing and second casing are folding, because the folding hinge simple structure of second aspect, smooth stable motion can be realized to the gear pair meshing transmission among the folding hinge in addition, thereby when first casing and second casing folding motion, can realize the steady folding function of first casing and second casing, promote user experience.

Further, comprising: a flexible screen; the folding flexible is mounted on the first housing and the second housing and covers the folding hinge.

Further, a bottom shell is installed on one side, facing away from the flexible screen, of the first shell and the second shell;

the bottom shell is used for accommodating the folding hinge.

Drawings

Fig. 1 is a schematic view of an internal structure of a damping mechanism according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a base according to an embodiment of the present invention;

FIG. 3 is a perspective view of a folding hinge according to an embodiment of the present invention;

FIG. 4 is an exploded view of a folding hinge provided by an embodiment of the present invention;

FIG. 5 is a schematic view of the internal structure of a folding hinge according to an embodiment of the present invention;

FIG. 6 is a top view of an electronic device provided by an embodiment of the present invention without a flexible screen mounted thereon;

fig. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention without a flexible screen;

fig. 8 is a schematic view illustrating an unfolded state of an electronic device according to an embodiment of the invention;

fig. 9 is a schematic diagram illustrating a folded state of an electronic device according to an embodiment of the invention;

FIG. 10 is a hovering diagram of an electronic device at a first position according to an embodiment of the present invention;

FIG. 11 is a hovering diagram of an electronic device at a second position according to an embodiment of the present invention;

fig. 12 is an exploded view of an electronic device according to an embodiment of the invention.

Icon: 100-a damping mechanism; 110-a base; 111-a limiting groove; 112-a chute; 120-a damping shaft; 130-a synchronous connection board; 140-a boss; 150-a slider; 160-damping teeth; 170-an elastic member; 200-a folding hinge; 210-a first gear pair; 211 — a first driving tooth; 212-a first driven gear; 220-second gear set; 221-a second drive gear; 222-a second driven gear; 230-rotating the connecting plate; 231-a slide rail; 240-synchronizing shaft; 300-a first housing; 400-a second housing; 500-a flexible screen; 600-a bottom shell; 700-screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Specifically, the peaks of the damping teeth 160 have plateaus.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.