CN115494913A - Folding rotating shaft structure and folding electronic equipment - Google Patents

Please refer to fig. 1, which is a schematic structural diagram of a foldable

100 according to an embodiment of the present disclosure. In some possible implementations, the foldable

100 may be at least one of a foldable mobile phone, a foldable tablet, a foldable computer, a foldable notebook, an in-vehicle mobile device, an electronic device with a flexible foldable display screen, and the like. In the embodiment of the present application, the foldable

100 may be a foldable mobile phone, and the foldable mode thereof is an inner folding mode or an outer folding mode.

The folding

100 may include a

10, a

20, a

30, and a

40. The two opposite sides of the foldable

100 are respectively connected to the

20 and the

30, so that the

20 and the

30 can be relatively rotated or rotated back to back through the foldable

10, and the switch between the flat state and the folded state is realized. The

40 is disposed on the

20, the folding

10 and the

30. Specifically, the

20 includes a first surface, the

30 includes a second surface, the

40 continuously covers the first surface of the

20, the folding

10 and the second surface of the

30, and the

40 is respectively and fixedly connected to the first surface of the

20 and the second surface of the

30.

It is understood that in some implementations, the

40 may be used to display information and provide an interactive interface for a user, and the

40 may be fixedly connected to the

20 and the

30 by using glue, etc. The

20 and the

30 may respectively form an installation space for installing electronic components such as a circuit board, a battery, a receiver, a speaker, a camera, etc. of the foldable

100. The circuit board may integrate electronic components such as a main controller, a storage unit, an antenna module, and a power management module of the foldable

100, and the battery may supply power to the electronic components such as the flexible screen, the circuit board, the receiver, the speaker, and the camera.

When the

20 and the

30 are rotated to be stacked on each other (the stacking finger sides may be attached without a gap, or may be opposite to each other), the foldable

100 may be in a folded state. Conversely, when the

20 and the

30 are rotated back to the limit position from the stacked state, that is, when the rotation back cannot be continued, the

20 and the

30 are flattened, and the folded

100 is in the flattened state. When the foldable

100 is completely unfolded, the

40 can be unfolded, and the foldable

100 has a large screen display effect. In a folded state, the

20 is stacked on the

30, and the

40 may be interposed between the

20 and the

30.

It is understood that the folded

100 may be unfolded from 0 to 180. That is, the folded

100 may be unfolded or fully closed. Alternatively, the foldable

100 may be unfolded by 30 °,70 °,150 °, and 180 °. When the folded

100 is unfolded 70-150, the folded

100 can be freely stopped at a desired angle. It is understood that the folded

100 can be freely stopped at any one of the angles of 0-180.

The present application provides a foldable

100 with a damping feel during opening and folding, which is mainly achieved by the

10 of the foldable

100. For the purposes of understanding, the following detailed description is to be read in connection with the drawings and the detailed description.

Fig. 2 to fig. 4 are schematic structural views of an embodiment of a

10 according to the present application.

It is understood that, in the present embodiment, the folding

10 may include a first

11, a second

12, a damping

13, an

14, a limiting

15, a

16, and a

17.

Specifically, the first

11 may include a

111, a

112, a first cam set 113, and a

114. The

111 and the

112 are symmetrically disposed, and the

111 and the

112 may rotate relative to each other. The first cam set 113 can include a

1132 engaged with a

1133 disposed opposite the

1132. The first cam set 113 may further include a

1134 engaged with a

1135 disposed opposite the

1134. The

1132 may be disposed at a first end of the

114, and the

1133 may be disposed at a second end of the

114. It should be noted that, in the embodiment of the present application, the

1132 and the

1134 only need to rotate with the

111 and the

112, and therefore, the

1132 and the

1134 may be fixed in other ways besides being fixedly connected by the

114 or being made into a structure of a conjoined cam, and the present application is not limited in particular.

In one embodiment of the present application, the

1132 and the

1134 are fixedly connected or integrally formed.

A first end of the

111 may be fixedly connected to a first end of the

16. Specifically, a first end of the

111 may be provided with a

1111, the

1111 may be engaged with a first end of the

16, and the first end of the

16 may be inserted into the

1111 and fixed in the

1111. A first end of the

112 may be fixedly connected to a first end of the

17. Specifically, a first end of the

112 may be provided with a second fixing hole 1121, the second fixing hole 1121 may be matched with a first end of the

17, and the first end of the

17 may be inserted into the second fixing hole 1121 and fixed in the second fixing hole 1121.

It is understood that the

1133 rotating coaxially with the

111 is fixed to the second end of the

111, the

1135 rotating coaxially with the

112 is fixed to the second end of the

112, and the

1133 and the

1135 are located on the same side of the first

11.

In this embodiment, the second

12 may include a

121, a

122, a second cam set 123, and a second connecting

124. The

121 and the

122 are symmetrically disposed, and the

121 and the

122 may rotate relative to each other. The

121 rotates coaxially with the

111, and the

122 rotates coaxially with the

112. The second cam set 123 may include a

1232 engaged with a

1233 disposed opposite the

1232. The second cam set 123 can further include a

1234 engaged with an

1235 disposed opposite the

1234. The

1232 may be fixed to the second end of the

121, the

1233 may be disposed at the first end of the

124, the

1234 may be fixed to the second end of the

122, and the

1235 may be disposed at the second end of the

124. Similarly, in the embodiment of the present application, the

1233 and the

1235 only need to rotate with the

121 and the

122, and therefore, the

1233 and the

1235 may be fixed by other methods besides being fixedly connected by the second connecting

124 or being in a structure of a conjoined cam, and the present application is not limited in particular.

The first end of the

121 may be fixedly connected to the second end of the

16. Specifically, the first end of the

121 may be provided with a

1211, the

1211 may be matched with the second end of the

16, and the second end of the

16 may be inserted into the

1211 and fixed in the

1211. A first end of the

122 may be fixedly connected to a second end of the

17. Specifically, a first end of the

122 may be provided with a

1221, the

1221 may be matched with a second end of the

17, and the second end of the

17 may be inserted into the

1221 and fixed in the

1221. It is understood that the

1232, which rotates coaxially with the

121, is fixed to the second end of the

121, the

1234, which rotates coaxially with the

122, is fixed to the second end of the

122, and the

1232 and the

1234 are located on the same side of the second

12.

The

14 includes a first

141, a

142, a first

143, a

144 and a second

145. One end of the

142 may be connected to the first abutting

141, and the other end of the

142 may penetrate through the first

143 and penetrate through the rotation axes of the first connecting

111 and the third connecting

121, so as to realize the relative rotation of the first connecting

111 and the third connecting

121, and further penetrate through the axes of the

1132 and the

1233. One end of the

144 is connected to the first abutting

141, and the other end of the

144 can penetrate through the second

145 and penetrate through the rotation axes of the second connecting

112 and the fourth connecting

122, so as to realize the relative rotation between the second connecting

112 and the fourth connecting

122, and further penetrate through the axes of the

1134 and the

1235. The first

143 and the second

145 are respectively sleeved on the

142 and the

144. Two ends of the first

143 elastically abut against a surface of the

1132 departing from the

1133 and the first abutting

141, respectively. Two ends of the second

145 elastically abut against a surface of the

1134 departing from the

1135 and the first abutting

141, respectively. Based on such design, the

142 can sequentially pass through the first abutting

141, the first

143, the

1132 and the

1133. The

144 may sequentially pass through the

141, the second

145, the

1134, and the

1135.

It is understood that the

142 may be inserted through the

111 and the

121, and the

144 may be inserted through the

112 and the

122, so that the

111 and the

112 rotate relative to each other, and the

121 and the

122 rotate relative to each other.

In this embodiment, the

1132 and the

1133 have a protrusion and a notch respectively disposed on opposite surfaces thereof for engagement. The

1134 and the

1135 have a protrusion and a notch on their opposite surfaces, respectively. Based on such design, the

14 can drive the

1132 and the

1133 and the

1134 and the

1135 in the first cam set 113 to cooperate to unfold or fold the foldable

100. Specifically, the

14 is configured to provide an elastic driving force to enable the

1132 and the

1133 and the

1134 and the

1135 to approach each other along a rotation axis direction of the

111 and the

112. The opposite surfaces of the

1232 and the

1233 are respectively provided with a projection and a notch for engagement. The opposite surfaces of the

1234 and the

1235 are provided with a protrusion and a notch, respectively, which are engaged with each other. Based on such design, the

14 can drive the

1232 and the

1233 and the

1234 and the

1235 of the second cam set 123 to cooperate to unfold or fold the foldable

100. Specifically, the

14 is used for providing an elastic driving force to enable the

1232 and the

1233 and the

1234 and the

1235 to approach each other along the length direction of the second

12.

In this embodiment, the first

143 and the second

145 may be energy storage springs.

In this embodiment, the folding

10 further includes a first synchronizing

18.

The

18 may include a

181 and a

182. The

181 is fixed at the second end of the first connecting

111, and the

181 is disposed on a surface of the

1133 departing from the

1132 and sleeved on the

142. The

182 is fixed at the second end of the

112, and the

182 may be disposed on a surface of the

1135 facing away from the

1134 and sleeved on the

144. In this application scenario, the

181 and the

182 may be engaged with each other.

In this embodiment, the folding

10 may further include a

19.

The

19 may include a

191 and a

192. The

191 is fixed to a second end of the

121, and the

191 may be sleeved on the

142. The

192 is fixed to the second end of the

122, and the

192 may be sleeved on the

144. In this application scenario, the

191 and the

192 may mesh with each other.

Based on the design, the

111, the

112, the

121 and the

122 are all links with driving gear structures, and can be used for driving other components to move. For example, the mutual engagement between the

111 and the

112, and the mutual engagement between the

121 and the

122 ensure the synchronism of the movement of the folding

100. The

111 and the

121 are connected by a

16, and the

112 and the

122 are connected by a

17, so that the motion of the foldable

100 can be kept synchronous.

In this embodiment, the damping

13 includes a damping

131.

The damping

131 is disposed between the first

11 and the second

12, and rotates under the action of an elastic force to generate a certain frictional damping force, thereby ensuring that the damping force is generated at a set angle. Specifically, the damping

131 is disposed between the

111 and the

112 and between the

121 and the

122.

Specifically, the damping

131 is provided with a through

1311 and a through

1312, the second connecting

124 is provided with a through

1241 and a through

1242, and the limiting

15 may be provided with a

151 and a

152. Based on such design, the second end of the

142 may sequentially pass through the first abutting

141, the first

143, the

1132, the

1133, the

181, the through

1311 of the damping

131, the

191, the through

1241 of the second connecting

124, and the

151, so as to be snapped in the

151. The

144 may sequentially pass through the first abutting

141, the second

145, the

1134, the

1135, the

182, the through

1312 of the damping

131, the

192, the through

1242 of the second connecting

124, and the

152, so as to be fastened in the

152. Based on such a design, the limiting

15 can ensure that the

142 and the

144 cannot be disengaged from the folding

10 under the action of the spring force. It can be understood that the limiting

15 is located at one end of the

142 and the

144 away from the fifth cam and the sixth cam, and one surfaces of the

1232 and the

1234 opposite to the

1233 and the

1235 are both abutted against the limiting

15.

It is understood that the

14 can provide an elastic driving force to make the

1132 and the

1133, and the

1134 and the

1135 approach each other along the direction of the rotation axis of the

111 and the

112.

Based on such a design, the damping

131, under the driving force provided by the

14, can generate friction pairs with the

111, the

112, the

121, and the

122, thereby increasing the rotational damping force, achieving the intermediate hovering requirement of the folding

100, and providing a damping feeling for the user.

It is understood that in another possible embodiment, the first synchronizing

18 may further include a double number of first synchronizing gears 183, the

19 may further include a double number of second synchronizing gears 193, and the first synchronizing gears 183 may be disposed between the

181 and the

182. In this application scenario, the adjacent

181, the

183, and the

182 may be engaged with each other. The

193 may be disposed between the

191 and the

192. In this application scenario, the adjacent

191, the

193, and the

192 may mesh with each other.

In some possible implementations, the

14 may further include a

146, a third

147, a

148 and a fourth

149. One end of the

146 may be connected to the first abutting

141, and the other end of the

146 may penetrate through the third

147 and the first connecting

114, sequentially penetrate through the

183, the damping

131, the

193, the second connecting

124, and the limiting

15, and be fixed to the limiting

15. One end of the

148 is connected to the first abutting

141, and the other end of the

148 can penetrate through the fourth

149 and the first connecting

114, sequentially penetrate through the

183, the damping

131, the

193, the second connecting

124, and the limiting

15, and is fixed to the limiting

15. The third

147 and the fourth

149 are respectively sleeved on the

146 and the

148. Two ends of the third

147 elastically abut against a surface of the first connecting

114 departing from the

1133 and the first abutting

141 respectively. Two ends of the fourth

149 elastically abut against a surface of the first connecting

114 departing from the

1135 and the first abutting

141 respectively.

Specifically, the limiting

15 is further provided with a

153 and a

154, and the second end of the

146 may sequentially pass through the first abutting

141, the third

147, the first connecting

114, the

183, the damping

131, the

193, the second connecting

124 and the

153, and be fixed in the

153. The

148 may sequentially pass through the

141, the fourth

149, the

114, the

183, the damping

131, the

193, the

124, and the

154, and be fixed in the

154.

In this embodiment, the third

147 and the fourth

149 may be energy storage springs.

It is understood that, in some embodiments, the

142 may be disposed through the

111 and the

121, and the

142 is further disposed through the

1132 and the damping

131. The

144 may be inserted through the

112 and the

122, and the

144 is further inserted through the

1134 and the damping

131.

Please refer to fig. 5, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 2 is that, as shown in fig. 5, the second connecting

124, the

121 and the

122 in the present embodiment are not provided with the cam structures engaged with each other. The damping

131 may rotate under the elastic force to generate a certain frictional damping force, thereby ensuring that the damping force is generated at a set angle. In this embodiment, the folding

10 may adopt fewer structural elements, so as to provide a damping feel for a user, and has a simple structure.

Please refer to fig. 6, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 2 to 4 is that, as shown in fig. 6, the first connecting

114, the

111 and the

112 in the present embodiment are not provided with the cam structures engaged with each other. The damping

131 can rotate under the action of the elastic force to generate a certain frictional damping force, thereby ensuring that the damping force is generated within a set angle. In this embodiment, the folding

10 may adopt fewer structural elements, so as to provide a damping feel for a user, and has a simple structure.

Please refer to fig. 7, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 2 is that in this embodiment, the

14 may further include a fifth

1410, a sixth

1411, a seventh

1412, an eighth

1413, and a second abutting plate (not shown in the drawings).

As shown in fig. 7, in the present embodiment, the fifth

1410 is sleeved on the

142, the sixth

1411 is sleeved on the

144, the seventh

1412 is sleeved on the

146, and the eighth

1413 is sleeved on the

148.

Two ends of the fifth

1410 respectively elastically abut against a surface of the second connecting

124 departing from the

1233 and the second abutting plate, so as to abut against the limiting

15. Two ends of the sixth

1411 elastically abut against a surface of the second connecting

124 departing from the

1235 and a second end of the

144, respectively.

Two ends of the seventh

1412 elastically abut against a surface of the second connecting

124 departing from the

1233 and the second abutting plate, respectively, so as to abut against the limiting

15. Two ends of the eighth

1413 respectively elastically abut against a surface of the second connecting

124 away from the

1235 and the second connecting plate, so as to abut against the limiting

15. In this embodiment, the fifth

1410, the sixth

1411, the seventh

1412 and the eighth

1413 may be energy storage springs.

Please refer to fig. 8 and fig. 9, which are schematic structural diagrams of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 2 is that the damping

13 in this embodiment includes a damping

131 and a third cam set 132.

In this embodiment, the damping

131 is provided with a

1321 and a

1323 at both ends, and the third cam set 132 may include an

1322 disposed opposite to the

1321 and a

1324 disposed opposite to the

1323. The

1321 and the

1322 are both sleeved on the

142. The

1323 and the

1324 are sleeved on the

144.

It is to be understood that the

1321 and the

1323 are fixed to both ends of the damping

131. The

1322 that rotates coaxially with the

121 is fixed to a second end of the

121, and the

1324 that rotates coaxially with the

122 is fixed to a second end of the

122. The damping

131 is sleeved on the

146 and the

148. The damping

131 is disposed adjacent to the first

11.

As shown in fig. 9, in the present embodiment, an

1322 and a

1324 are disposed at two ends of the damping

131. The third cam set 132 may include a

1321 disposed to face the

1322 and a

1323 disposed to face the

1324, and the

1322 and the

1324 may be fixed to both ends of the damping

131. The

1321 that rotates coaxially with the

111 is fixed to a second end of the

111, and the

1323 that rotates coaxially with the

112 is fixed to a second end of the

112. The damping

131 is sleeved on the

146 and the

148. The damping

131 is disposed adjacent to the second

12.

Please refer to fig. 10, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 8 is that, as shown in fig. 10, in the present embodiment, the

132 includes a

1321, a

1323, a

1332, a

1334, and a damping

131. Wherein, a first double-sided cam and a second double-sided cam are respectively arranged at two ends of the damping

131. The first and second cams are fixed to both ends of the damping

131, the

142 may be inserted through the first cam, and the

144 may be inserted through the second cam. The first double cam may include an

1322 and a

1331, and the second double cam may include a

1324 and a

1333.

The

1321 is disposed opposite to the

1322, the

1331 is disposed opposite to the

1332, the

1323 is disposed opposite to the

1324, and the

1333 is disposed opposite to the

1334.

In this embodiment, the

1321, the

1322, the

1331 and the

1332 are all sleeved on the

142, and the

1323, the

1324, the

1333 and the

1334 are all sleeved on the

144.

The

1321 is engaged with the

1322, and the

1323 is engaged with the

1324. The

1331 is engaged with the

1332, and the

1333 is engaged with the

1334. The damping

131 is sleeved on the

146 and the

148. The

1322 and the

1331 are fixed to a first end of the damping

131, and the

1324 and the

1333 are fixed to a second end of the damping

131.

Based on the embodiments shown in fig. 8 to 10, a larger torque can be obtained in a limited space, and if the space for folding the

100 is limited, when the elastic force of the elastic member is limited, a larger rotational holding force and a self-flattening or self-closing driving torque can be achieved by increasing the number of pairs of concave cams.

Please refer to fig. 11, which is a schematic structural diagram of a

10 according to another embodiment of the present application. The difference from the embodiment of the

10 shown in fig. 2 is that the damping

13 in this embodiment may include a damping

131, a

134, a

135 and a

136.

The

134 is sleeved on the

142, the

144, the

146 and the

148, and the

134 is arranged close to the

181 and the

182, that is, the

134 at this time is a static friction plate. A first end of the

135 is sleeved on the first connecting

16, a second end of the

135 is sleeved on the

142, and a second end of the

135 is located between the

134 and the damping

131. That is, the

135 is a dynamic friction plate and can rotate coaxially with the

111.

The first end of the

136 is sleeved on the second connecting

17, the second end of the

136 is sleeved on the

144, and the second end of the

136 is located between the

134 and the damping

131. That is, the

136 is a dynamic friction plate and can rotate coaxially with the

112.

Furthermore, in this embodiment, the damping

13 may further include a fourth friction plate, a fifth friction plate and a sixth friction plate, that is, the fourth friction plate may be further disposed between the

134 and the first

11, a first end of the fifth friction plate may be sleeved on the

16, a second end of the fifth friction plate may be sleeved on the

142, and a second end of the fourth friction plate is located between the

134 and the fourth friction plate. A first end of the sixth friction plate may be sleeved on the second connecting

17, a second end of the sixth friction plate may be sleeved on the

144, and the second end of the sixth friction plate is located between the

134 and the fourth friction plate.

Please refer to fig. 12, which is a schematic structural diagram of a

10 according to another embodiment of the present application. The difference from the embodiment of the

10 shown in fig. 11 is that the

134 is disposed adjacent to the

191 and the

192. A first end of the

135 is sleeved on the first connecting

16, a second end of the

135 is sleeved on the

142, and a second end of the

135 is located between the

134 and the damping

131. That is, the

135 is a dynamic friction plate and can rotate coaxially with the

111. The first end of the

136 is sleeved on the second connecting

17, the second end of the

136 is sleeved on the

144, and the second end of the

136 is located between the

134 and the damping

131. That is, the

136 is a dynamic friction plate and can rotate coaxially with the

112.

Please refer to fig. 13, which is a schematic structural diagram of a

10 according to another embodiment of the present application. The difference from the embodiment of the folding

10 shown in fig. 11 is that in this embodiment, the damping

13 may further include a

137, a

138 and a

139.

The

137 is sleeved on the

142, the

144, the

146 and the

148, and the

137 is disposed close to the

191 and the

192. A first end of the

138 is sleeved on the first connecting

16, a second end of the

138 is sleeved on the

142, and a second end of the

138 is located between the fourth friction plate and the damping

131. A first end of the

139 is sleeved on the second connecting

17, a second end of the

139 is sleeved on the

144, and a second end of the

139 is located between the

137 and the damping

131.

Please refer to fig. 14, which is a schematic structural diagram of a

10 according to another embodiment of the present application. The difference from the embodiment of the folding

10 shown in fig. 8 is that in this embodiment, the damping

13 may further include a

134, a

135 and a

136.

The

134 is sleeved on the

142, the

144, the

146 and the

148, and the

134 is arranged close to the

181 and the

182. The first end of the

135 is sleeved on the first connecting

16, the second end of the

135 is sleeved on the

142, the second end of the

135 is located between the

134 and the

1321, and the

1321 is sleeved on the

142. The first end of the

136 is sleeved on the second connecting

17, the second end of the

136 is sleeved on the

144, and the second end of the

136 is located between the

1323 and the

134.

Please refer to fig. 15, which is a schematic structural diagram of a

10 according to another embodiment of the present application. The difference from the embodiment of the

10 shown in fig. 14 is that, in this embodiment, the

134 is disposed adjacent to the

191 and the

192. The

134 is sleeved on the

142, the

144, the

146 and the

148.

A first end of the

135 is sleeved on the first connecting

16, a second end of the

135 is sleeved on the

142, and a second end of the

135 is located between the

134 and the

1322.

The first end of the

136 is sleeved on the second connecting

17, the second end of the

136 is sleeved on the

144, and the second end of the

136 is located between the

1324 and the

134.

In one embodiment, as shown in fig. 16, the

142 and the

144 may each be a flat shaft or a profiled shaft. In other possible embodiments, the

146 and the

148 may also be flat shafts or profiled shafts, that is, the shaft hole of the

1132, the shaft hole of the

1134, and the shaft hole of the

183 are all flat holes or profiled holes. Due to such a design, it is ensured that the first connecting

111 rotates to drive the

142, the

144, the

146 and the

148 to rotate together.

Please refer to fig. 17, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 7 is that, in the present embodiment, the damping

13 includes a damping

131, a

134, a

135 and a

136.

The first end of the

142, the first end of the

144, the first end of the

146, and the first end of the

148 are all sleeved with the

135 and the

136, and the first end of the first

143, the first end of the second

145, the first end of the third

147, and the first end of the fourth

149 all elastically abut against the

136. A

134 is respectively sleeved on the first end of the

142, the first end of the

144, the first end of the

146 and the first end of the

148, and the

134 is located between the

135 and the

136.

The second end of the

142, the second end of the

144, the second end of the

146, and the second end of the

148 are all sleeved with the

135 and the

136, and the first end of the fifth

1410, the first end of the sixth

1411, the first end of the seventh

1412, and the first end of the eighth

1413 are all elastically abutted against the

136. A

134 is respectively sleeved on the second end of the

142, the second end of the

144, the second end of the

146 and the second end of the

148, and the

134 is located between the

135 and the

136.

In some possible embodiments, the

135 may be a first holding plate. In other possible embodiments, a first

141 may be further added between the

135 and the first ends of the

142, the

144, the

146, and the

148, or a first

141 may be further added between the

136 and the first

143, the second

145, the third

147, and the fourth

149.

With this arrangement, the

135 and the

136 are static friction plates and the

134 is dynamic friction plate at the distal end of the elastic member, and can rotate together with the

142, the

144, the

146, and the

148. Based on the design, the rotary damping force is improved, the rotary intermediate hovering requirement is met, and the damping feeling is provided for a user.

It is understood that, in this embodiment, the folding

10 may be provided with a plurality of friction plates on both sides, and in other possible embodiments, the folding

10 may also be provided with a plurality of friction plates on one side.

Please refer to fig. 18, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 17 is that in this embodiment, the damping

13 further includes a third cam set 132.

In this embodiment, the third cam set 132 may include a

1321 engaged with the

1322 provided opposite to the

1321, a

1323 engaged with the

1322, and a

1324 provided opposite to the

1323. The

1321 and the

1322 are both sleeved on the

142. The

1323 and the

1324 are sleeved on the

144.

It is understood that the

1321 is fixed to the first end of the damping

131 and the

1323 is fixed to the second end of the damping

131. The

1322 that rotates coaxially with the

121 is fixed to a second end of the

121, and the

1324 that rotates coaxially with the

122 is fixed to a second end of the

122. The damping

131 is sleeved on the

146 and the

148. The damping

131 is disposed near the first

11. In another embodiment, as shown in FIG. 19, the damping

131 may be located proximate to the location of the second

12. The

1322 is fixed to the first end of the damping

131, and the

1324 is fixed to the second end of the damping

131. The

1321 that rotates coaxially with the

111 is fixed to a second end of the

111, and the

1323 that rotates coaxially with the

112 is fixed to a second end of the

112. The damping

131 is sleeved on the

146 and the

148.

Please refer to fig. 20, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 18 is that in this embodiment, as shown in fig. 20, the folding

10 in this embodiment further includes a fourth cam set 133, and the fourth cam set 133 may include a

1331 engaged with the fourth cam set 133, a

1332 disposed opposite to the

1331, a

1333 engaged with the fourth cam set 133, and a

1334 disposed opposite to the

1333.

In this embodiment, the

1321, the

1322, the

1331 and the

1332 are all sleeved on the

142, and the

1323, the

1324, the

1333 and the

1334 are all sleeved on the

144.

The

1321 is engaged with the

1322, and the

1323 is engaged with the

1324. The

1331 is engaged with the

1332, and the

1333 is engaged with the

1334. The damping

131 is sleeved on the

146 and the

148. The

1322 and the

1331 are fixed to a first end of the damping

131, and the

1324 and the

1333 are fixed to a second end of the damping

131.

Please refer to fig. 21, which is a schematic structural diagram of a

10 according to another embodiment of the present application.

The difference from the embodiment of the

10 shown in fig. 2 is that:

in this embodiment, the folding

10 may include a first

11, a second

12, an

14, a limiting

15, a

16, a

17, a first synchronizing

18, and a

19.

The first

11 may include a

111, a

112, a first cam set 113, and a

114. The first cam set 113 can include a

1132 engaged with a

1133 disposed opposite the

1132. The first cam set 113 may further include a

1134 engaged with the first cam, and a

1135 disposed opposite to the

1134. The

1133 may be disposed at a first end of the

114, and the

1135 may be disposed at a second end of the

114.

The second

12 may include a

121, a

122, a second cam set 123, and a second connecting

124. The second cam set 123 may include a

1232 engaged with a

1233 disposed opposite the

1232. The second cam set 123 can also include a

1234 engaged with an

1235 positioned opposite the

1234. The

1232 may be disposed at a first end of the second connecting

124, and the

1234 may be disposed at a second end of the second connecting

124.

The first connecting

111 is fixedly connected with the third connecting

121 through the first connecting

16, and the second connecting

112 is fixedly connected with the fourth connecting

122 through the second connecting

17.

The second end of first connecting

111 is fixed with first connecting

111 coaxial rotation's

1132, the second end of second connecting

112 be fixed with second connecting

112 coaxial rotation's

1134, just

1132 with

1134 all are located the same side of first

11. The

1233 that rotates coaxially with the

121 is fixed to the second end of the

121, the

1235 that rotates coaxially with the

122 is fixed to the second end of the

122, and the

1233 and the

1235 are located on the same side of the second

12.

The

14 includes a

142, a first

143, a

144, and a second

145. One end of the

142 may be connected to the position-limiting

15, and the other end of the

142 may penetrate through the axis of the

1132 and be connected to the axis of the

1133, and sequentially penetrate through the first connecting

114, the first

143, the second connecting

124, the

1232, and the

1233 to be connected to another position-limiting

15. One end of the

144 is connected to the position-limiting

15, and the other end of the

144 may penetrate through the axis of the

1134 and be connected to the axis of the

1135, and sequentially penetrate through the first connecting

114, the second

145, the second connecting

124, the

1234, and the

1235 to be connected to another position-limiting

15. Two ends of the first

143 elastically abut against a surface of the first connecting

114 facing away from the

1133 and a surface of the second connecting

124 facing away from the

1232, respectively. Two ends of the second

145 elastically abut against a surface of the first connecting

114 departing from the

1133 and a surface of the second connecting

124 departing from the

1232, respectively.

The

18 may include first and second drive gears 181 and 182 and a double number of first synchronizing gears 183. The

181 is fixed at the second end of the first connecting

111, and the

181 is disposed on a surface of the

1133 facing away from the

1132 and is sleeved on the

142. The

182 is fixed at the second end of the

112, and the

182 may be disposed on a surface of the

1135 facing away from the

1134 and sleeved on the

144. The

183 may be disposed between the

181 and the

182. In this application scenario, the adjacent

181, the

183 and the

182 may be engaged with each other.

The

19 may include third and fourth drive gears 191, 192 and a double number of second synchronizing gears 193. The

191 is fixed to a second end of the

121, and the

191 may be sleeved on the

142. The

192 is fixed to the second end of the fourth connecting

122, and the

192 can be sleeved on the

144. In this application scenario, the

191 and the

192 may mesh with each other. The

193 may be disposed between the

191 and the

192. In this application scenario, the adjacent

191, the

193, and the

192 may mesh with each other.

In some possible implementations, the

14 may further include a

146, a third

147, a

148 and a fourth

149. The third

147 and the fourth

149 are respectively sleeved on the

146 and the

148.

One end of the

146 may be connected to the

15, and the other end of the

146 may sequentially penetrate through the

183, the first connecting

114, the third

147, the second connecting

124, and the

193 to be connected to another

15. One end of the

148 is connected to the

15, and the other end of the

148 may sequentially pass through the

183, the first connecting

114, the third

147, the second connecting

124, and the

193 to be connected to another

15. Two ends of the third

147 respectively elastically abut against a surface of the first connecting

114 departing from the

1133 and a surface of the second connecting

124 departing from the

1232. Two ends of the fourth

149 respectively elastically abut against a surface of the first connecting

114 departing from the

1135 and a surface of the second connecting

124 departing from the

1234.

In this embodiment, the limiting

15 does not rotate along with the rotation of the

111 and the

112, and the other limiting

15 does not rotate along with the rotation of the

121 and the

122. Based on the design, a friction pair can be generated between the limiting

15 and the first connecting

111 and the second connecting

112 to generate a damping force, and a friction pair can be generated between the other limiting

15 and the third connecting

121 and the fourth connecting

122 to generate a damping force.

In another possible embodiment, a friction pair may be disposed between the limiting

15 and the first

11, and a friction pair may be disposed between the limiting

15 and the second

12.

Based on the embodiment shown in fig. 21, the

14 can be disposed at the middle position of the folding spindle structure, and the first connecting

114 and the second connecting

124 can move to the middle position, and based on such design, the damping effect can be brought to the user when opening and closing.

1. A folding spindle structure, comprising:

the first cam connecting rod assembly comprises a first connecting rod and a second connecting rod which are symmetrically arranged, and the first connecting rod and the second connecting rod can rotate relative to each other; the first cam set is also included; the first cam group comprises a first cam, a third cam arranged opposite to the first cam, a second cam and a fourth cam arranged opposite to the second cam;

the second end of the first connecting rod is fixedly provided with the third cam which coaxially rotates with the first connecting rod, the second end of the second connecting rod is fixedly provided with the fourth cam which coaxially rotates with the second connecting rod, and the third cam and the fourth cam are positioned on the same side of the first cam connecting rod assembly; the first cam and the second cam do not rotate with the first link and the second link;

the second cam connecting rod assembly comprises a third connecting rod and a fourth connecting rod which are symmetrically arranged, the third connecting rod and the fourth connecting rod can rotate relative to each other, the third connecting rod and the first connecting rod rotate coaxially, and the fourth connecting rod and the second connecting rod rotate coaxially; the first end of the third connecting rod is fixedly connected with the first end of the first connecting rod through a first connecting rod pin shaft, and the first end of the fourth connecting rod is fixedly connected with the first end of the second connecting rod through a second connecting rod pin shaft;

the first synchronous assembly comprises a first driving gear and a second driving gear, the first driving gear is fixed at the second end of the first connecting rod, and the first driving gear is arranged on one surface of the third cam, which is deviated from the first cam; the second driving gear is fixed at the second end of the second connecting rod, the second driving gear is arranged on one surface of the fourth cam, which is far away from the second cam, and the first driving gear and the second driving gear are meshed with each other;

the second synchronous component comprises a third driving gear and a fourth driving gear, the third driving gear is fixed at the second end of the third connecting rod, the fourth driving gear is fixed at the second end of the fourth connecting rod, and the third driving gear and the fourth driving gear are meshed with each other;

the elastic driving component is used for providing elastic driving force so that the first cam and the third cam, and the second cam and the fourth cam can approach each other along the direction of a rotating axis of the rotating connection of the first connecting rod and the second connecting rod;

and the damping assembly comprises a damping bracket, and the damping bracket is arranged between the first cam connecting rod assembly and the second cam connecting rod assembly and rotates under the action of elastic force to generate friction damping force.

2. The folding spindle structure of claim 1, wherein the elastic driving assembly includes a first abutting plate, a first cam shaft, a first elastic member, a second cam shaft, and a second elastic member;

the first camshaft is arranged through the first connecting rod and the third connecting rod, the second camshaft is arranged through the second connecting rod and the fourth connecting rod, so that the first connecting rod and the second connecting rod rotate relative to each other, and the third connecting rod and the fourth connecting rod rotate relative to each other;

the first cam shaft is further arranged through the first cam and the damping support, and the second cam shaft is further arranged through the second cam and the damping support;

the first abutting plate is positioned at one end, far away from the first cam and the second cam, of the first cam shaft and the second cam shaft;

the first elastic piece is sleeved on the first cam shaft, and two ends of the first elastic piece are respectively elastically abutted against one surface of the first cam, which is far away from the third cam, and the first abutting plate;

the second elastic piece is sleeved on the second cam shaft, and two ends of the second elastic piece are respectively elastically abutted against one surface of the second cam, which is far away from the fourth cam, and the first abutting plate.

3. The folding spindle structure of claim 2,

the second cam connecting rod assembly further comprises a second cam group, the folding rotating shaft structure further comprises a limiting piece, and the second cam group comprises a fifth cam, a seventh cam, a sixth cam and an eighth cam, wherein the seventh cam and the sixth cam are arranged opposite to each other; the second end of the third connecting rod is fixed with the seventh cam which coaxially rotates with the third connecting rod, the second end of the fourth connecting rod is fixed with the eighth cam which coaxially rotates with the fourth connecting rod, the seventh cam and the eighth cam are positioned on the same side of the second cam connecting rod assembly, and the fifth cam and the sixth cam do not rotate along with the third connecting rod and the fourth connecting rod;

the limiting piece is located at one end, far away from the fifth cam and the sixth cam, of the first cam shaft and the second cam shaft, and one surfaces, back to the seventh cam and the eighth cam, of the fifth cam and the sixth cam are abutted to the limiting piece.

4. The folding spindle structure of claim 3,

the first synchronous assembly further comprises two first synchronous gears, the two first synchronous gears are arranged between the first driving gear and the second driving gear, and the adjacent first driving gear, the two first synchronous gears and the second driving gear are meshed with each other;

the second synchronizing assembly further comprises two second synchronizing gears, the third driving gear and the fourth driving gear are arranged between the two second synchronizing gears and are adjacent to each other, and the third driving gear, the two second synchronizing gears and the fourth driving gear are meshed with each other.

5. The folding spindle structure of claim 4,

the first cam and the second cam are fixedly connected or integrally formed through a first connecting plate, and the fifth cam and the sixth cam are fixedly connected or integrally formed through a second connecting plate;

the elastic driving assembly further comprises a third cam shaft, a third elastic piece, a fourth cam shaft and a fourth elastic piece;

the third camshaft penetrates through the first connecting plate, the first synchronous gear, the damping support, the second synchronous gear and the second connecting plate;

the fourth camshaft penetrates through the first connecting plate, the other first synchronous gear, the damping bracket, the other second synchronous gear and the second connecting plate;

the third elastic piece is sleeved on the third cam shaft, and two ends of the third elastic piece respectively elastically abut against one surface of the first connecting plate, which is far away from the third cam, and the abutting plate;

the fourth elastic piece is sleeved on the fourth cam shaft, and two ends of the fourth elastic piece are respectively elastically abutted against one surface of the first connecting plate, which is far away from the fourth cam, and the abutting plate.

6. The folding spindle structure of claim 5,

the damping assembly further comprises a third cam set comprising a ninth cam and a tenth cam, the third cam set comprising an eleventh cam disposed opposite the ninth cam and a twelfth cam disposed opposite the tenth cam; the ninth cam and the eleventh cam are both sleeved on the first cam shaft, the tenth cam and the twelfth cam are both sleeved on the second cam shaft, the ninth cam is meshed with the eleventh cam, and the tenth cam is meshed with the twelfth cam;

the ninth cam and the tenth cam are fixed at two ends of the damping support, the first cam shaft penetrates through the ninth cam, and the second cam shaft penetrates through the tenth cam;

the eleventh cam which rotates coaxially with the third connecting rod is fixed at the second end of the third connecting rod, and the twelfth cam which rotates coaxially with the fourth connecting rod is fixed at the second end of the fourth connecting rod; or, the eleventh cam which rotates coaxially with the first link is fixed to the second end of the first link, and the twelfth cam which rotates coaxially with the second link is fixed to the second end of the second link.

7. The folding spindle structure of claim 5,

the damping assembly further comprises a third cam set, the third cam set comprises a ninth cam, a tenth cam, a fifteenth cam and a sixteenth cam, the damping bracket comprises a first double-faced cam and a second double-faced cam, the first double-faced cam is positioned between the ninth cam and the fifteenth cam, the second double-faced cam is positioned between the tenth cam and the sixteenth cam, the first double-faced cam comprises an eleventh cam arranged opposite to the ninth cam and a thirteenth cam arranged opposite to the fifteenth cam, and the second double-faced cam comprises a twelfth cam arranged opposite to the tenth cam and a fourteenth cam arranged opposite to the sixteenth cam; the ninth cam, the eleventh cam, the thirteenth cam and the fifteenth cam are all sleeved on the first cam shaft, and the tenth cam, the twelfth cam, the fourteenth cam and the sixteenth cam are all sleeved on the second cam shaft;

the first double-faced cam and the second double-faced cam are fixed at two ends of the damping bracket, the first cam shaft penetrates through the first double-faced cam, and the second cam shaft penetrates through the second double-faced cam; the ninth cam is engaged with the eleventh cam, the tenth cam is engaged with the twelfth cam, the thirteenth cam is engaged with the fifteenth cam, and the fourteenth cam is engaged with the sixteenth cam;

the second end of the first connecting rod is fixed with the ninth cam which coaxially rotates with the first connecting rod, the second end of the second connecting rod is fixed with the tenth cam which coaxially rotates with the second connecting rod, the second end of the third connecting rod is fixed with the fifteenth cam which coaxially rotates with the third connecting rod, and the second end of the fourth connecting rod is fixed with the sixteenth cam which coaxially rotates with the fourth connecting rod.

8. The folding spindle structure of claim 5,

the damping assembly further comprises a first friction plate, a second friction plate and a third friction plate; the first friction plate is sleeved on the first cam shaft, the second cam shaft, the third cam shaft and the fourth cam shaft, and the first friction plate is arranged close to the first driving gear and the second driving gear; a first end of the second friction plate is sleeved on the first connecting rod pin shaft, a second end of the second friction plate is sleeved on the first camshaft, and a second end of the second friction plate is positioned between the first friction plate and the damping support; the first end of the third friction plate is sleeved on the second connecting rod pin shaft, the second end of the third friction plate is sleeved on the second cam shaft, and the second end of the third friction plate is located between the first friction plate and the damping support.

9. The folding spindle structure of claim 8,

the damping assembly further comprises a fourth friction plate, a fifth friction plate and a sixth friction plate; the fourth friction plate is sleeved on the first cam shaft, the second cam shaft, the third cam shaft and the fourth cam shaft; the fourth friction plate is arranged close to the third driving gear and the fourth driving gear; a first end of the fifth friction plate is sleeved on the first connecting rod pin shaft, a second end of the fifth friction plate is sleeved on the first camshaft, and a second end of the fifth friction plate is positioned between the fourth friction plate and the damping support; the first end of the sixth friction plate is sleeved on the second connecting rod pin shaft, the second end of the sixth friction plate is sleeved on the second camshaft, and the second end of the sixth friction plate is located between the fourth friction plate and the damping support.

10. A folding spindle arrangement according to claim 3,

the elastic driving assembly further comprises a fifth elastic piece, a sixth elastic piece and a second abutting plate;

the fifth elastic piece is sleeved on the first cam shaft, and two ends of the fifth elastic piece respectively and the fifth cam are opposite to one surface of the seventh cam and elastically abut against the second abutting plate so as to abut against the limiting sheet;

the sixth elastic piece is sleeved on the second cam shaft, and two ends of the sixth elastic piece respectively and the sixth cam are opposite to one surface of the eighth cam and the second abutting plate elastically abut against the limiting piece.

11. The folding spindle structure of claim 5,

the elastic driving assembly further comprises a fifth elastic piece, a sixth elastic piece, a seventh elastic piece, an eighth elastic piece and a second abutting plate;

the fifth elastic piece is sleeved on the first cam shaft, and two ends of the fifth elastic piece respectively and elastically abut against one surface of the fifth cam, which is opposite to the seventh cam, and the second abutting plate so as to abut against the limiting sheet;

the sixth elastic piece is sleeved on the second cam shaft, and two ends of the sixth elastic piece respectively and the sixth cam are opposite to one surface of the eighth cam and elastically abut against the second abutting plate so as to abut against the limiting sheet;

the seventh elastic piece is sleeved on the third cam shaft, and two ends of the seventh elastic piece respectively elastically abut against one surface of the second connecting plate, which is far away from the seventh cam, and the second abutting plate so as to abut against the limiting sheet;

the eighth elastic piece is sleeved on the fourth cam shaft, and two ends of the eighth elastic piece respectively elastically abut against one surface of the second connecting plate, which is far away from the eighth cam, and the second abutting plate so as to abut against the limiting piece.

12. The folding spindle structure of claim 10,

the damping assembly further comprises a first friction plate, a second friction plate, a third friction plate, a fourth friction plate, a fifth friction plate and a sixth friction plate;

the second friction plate and the third friction plate are sleeved at one ends, far away from the first cam and the second cam, of the first cam shaft, the second cam, the third cam shaft and the fourth cam shaft; the fifth friction plate and the sixth friction plate are sleeved at one ends, far away from the fifth cam and the sixth cam, of the first cam shaft, the second cam shaft, the third cam shaft and the fourth cam shaft;

one end of each of the first camshaft, the second camshaft, the third camshaft and the fourth camshaft is sleeved with a first friction plate, and the first friction plate is positioned between the second friction plate and the third friction plate; a fourth friction plate is sleeved at the other end of each of the first camshaft, the second camshaft, the third camshaft and the fourth camshaft, and the fourth friction plate is positioned between the fifth friction plate and the sixth friction plate; two ends of the first elastic piece respectively elastically abut against the third friction plate and one surface of the first cam, which is far away from the third cam; two ends of the second elastic piece respectively elastically abut against the third friction plate and one surface of the second cam, which is far away from the fourth cam;

two ends of the fifth elastic piece respectively and elastically abut against the sixth friction plate and one surface of the fifth cam, which is far away from the seventh cam; two ends of the sixth elastic piece respectively elastically abut against the sixth friction plate and one surface of the sixth cam, which is far away from the eighth cam.

13. A folding spindle structure, comprising:

a first limiting sheet;

the first cam connecting rod component comprises a first connecting rod and a second connecting rod which are symmetrically arranged, and the first connecting rod and the second connecting rod can rotate relative to each other; the first cam group is arranged on the first cam; the first cam group comprises a first cam, a third cam arranged opposite to the first cam, a second cam and a fourth cam arranged opposite to the second cam;

the second end of the first connecting rod is fixedly provided with the first cam which coaxially rotates with the first connecting rod, the second end of the second connecting rod is fixedly provided with the second cam which coaxially rotates with the second connecting rod, and the first cam and the second cam are positioned on the same side of the first cam connecting rod assembly;

the second cam connecting rod assembly comprises a third connecting rod and a fourth connecting rod which are symmetrically arranged, the third connecting rod and the fourth connecting rod can rotate relative to each other, the third connecting rod and the first connecting rod rotate coaxially, and the fourth connecting rod and the second connecting rod rotate coaxially; further comprising: the first end of the third connecting rod is fixedly connected with the first end of the first connecting rod through a first connecting rod pin shaft, and the first end of the fourth connecting rod is fixedly connected with the first end of the second connecting rod through a second connecting rod pin shaft; the second cam group comprises a fifth cam, a seventh cam arranged opposite to the fifth cam, a sixth cam and an eighth cam arranged opposite to the sixth cam;

the second end of the third connecting rod is fixed with the seventh cam which coaxially rotates with the third connecting rod, the second end of the fourth connecting rod is fixed with the eighth cam which coaxially rotates with the fourth connecting rod, and the seventh cam and the eighth cam are positioned on the same side of the second cam connecting rod assembly;

the first synchronous assembly comprises a first driving gear and a second driving gear, the first driving gear is fixed at the second end of the first connecting rod, and the first driving gear is arranged on one surface of the third cam, which is deviated from the first cam; the second driving gear is fixed at the second end of the second connecting rod, the second driving gear is arranged on one surface of the fourth cam, which is deviated from the second cam, and the first driving gear and the second driving gear are meshed with each other;

the second synchronous component comprises a third driving gear and a fourth driving gear, the third driving gear is fixed at the second end of the third connecting rod, the fourth driving gear is fixed at the second end of the fourth connecting rod, and the third driving gear and the fourth driving gear are meshed with each other;

the elastic driving assembly comprises a first elastic piece, a first cam shaft, a second cam shaft and a second elastic piece; two ends of the first elastic piece respectively elastically abut against one surface of the third cam departing from the first cam and one surface of the fifth cam departing from the seventh cam; two ends of the second elastic piece respectively elastically abut against one surface of the fourth cam departing from the second cam and one surface of the sixth cam departing from the eighth cam; the first cam shaft penetrates through the first limiting piece, the first connecting rod and the third connecting rod, and the first cam shaft further penetrates through the first cam and the third cam; the second cam shaft penetrates through the second cam and the fourth cam, and the first limiting piece does not rotate along with the first connecting rod and the second connecting rod.

14. The folding spindle structure of claim 13, further comprising:

the folding rotating shaft structure further comprises a second limiting piece;

the second limiting piece is sleeved at the second ends of the first cam shaft and the second cam shaft, and the second limiting piece does not rotate along with the third connecting rod and the fourth connecting rod.

15. A folding electronic device comprising a flexible screen, a first housing and a second housing, wherein the folding electronic device further comprises a folding hinge structure according to any one of claims 1-12 or a folding hinge structure according to any one of claims 13-14;

the first shell and the second shell rotate relatively or rotate back to back through the folding rotating shaft structure;

the first shell comprises a first surface, the second shell comprises a second surface, the flexible screen continuously covers the first surface of the first shell, the folding rotating shaft structure and the second surface of the second shell, and the flexible screen is fixedly connected with the first surface of the first shell and the second surface of the second shell respectively.