US-12624790-B2 - Rotating shaft apparatus and electronic device

Abstract

A rotating shaft apparatus is provided, where the rotating shaft apparatus includes an adapter member, a spindle, and a crank-slider mechanism. The adapter member is fixedly connected to a load. The spindle is fixedly connected to the adapter member. The crank-slider mechanism acts on the spindle to provide a torque. The torque partially or completely counteracts a gravitational torque of the load. A compression spring is disposed in the crank-slider mechanism. A spring force of the compression spring acts on the spindle, so that the spring force changes with rotation of the spindle.

Inventors

• Wenyuan Li
• Yangming LIN
• Feng Jiang

Assignees

• HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date

20260512

Application Date

20231222

Priority Date

20210624

Claims (20)

1. 1 . A rotating shaft apparatus, comprising: an adapter member, configured to fixedly connect to a load; at least one spindle, fixedly connected to the adapter member; and a crank-slider mechanism group, comprising one or more crank-slider mechanisms that are configured to act on the spindle to provide a torque that partially or completely counteracts a gravitational torque of the load; and each crank-slider mechanism of the one or more crank-slider mechanisms comprises: a support, connected to the spindle and rotatable around the spindle; at least one crank, disposed in the support, wherein one end of the crank in an extension direction is fixedly connected on the spindle and rotates with the spindle; a spring guide assembly, comprising: a first support plate, wherein the first support plate is connected to the other end of the crank in the extension direction, and the first support plate is rotatable relative to the crank; and at least one guide bar, wherein one end of the guide bar in an extension direction is fixedly connected to the first support plate; a second support plate, connected to the support and rotatable relative to the support, wherein a slot is provided on the second support plate, and the other end of the guide bar in the extension direction slidably fits in the slot; and an elastic assembly, comprising at least one elastic structure, wherein the elastic structure is sleeved on the guide bar and is in a compressed state, one end of the elastic structure abuts against the first support plate, and the other end abuts against the second support plate.
2. 2 . The rotating shaft apparatus according to claim 1 , wherein the each crank-slider mechanism further comprises a shaft sleeve, the shaft sleeve is fixedly sleeved on the guide bar, and an end that is of the shaft sleeve and that is close to the second support plate slidably fits in the slot; and the elastic structure is sleeved on an outer wall of the shaft sleeve.
3. 3 . The rotating shaft apparatus according to claim 2 , wherein the guide bar comprises a guide post and a sliding rod, extension directions of the guide post and the sliding rod are the same, one end of the guide post in an extension direction is fixedly connected to the first support plate, the other end is fixedly connected to the sliding rod, and the sliding rod passes through the slot; and a positioning structure is disposed on the guide post, and is configured to position the shaft sleeve.
4. 4 . The rotating shaft apparatus according to claim 3 , wherein the positioning structure is a dowel pin, a dowel hole adapted to the dowel pin is provided on the shaft sleeve, and the dowel pin fits in the dowel hole to fasten the shaft sleeve on the guide post.
5. 5 . The rotating shaft apparatus according to claim 1 , wherein the each crank-slider mechanism further comprises a spring adjustment shaft sleeve; and an avoidance hole is provided at a position that is on the second support plate and that corresponds to the guide bar, the spring adjustment shaft sleeve is in a threaded connection with the avoidance hole, a spring support portion is disposed at an end that is of the spring adjustment shaft sleeve and that is close to the elastic structure, the spring support portion abuts against the elastic structure, the slot is provided at a position that is on the spring adjustment shaft sleeve and that corresponds to the guide bar, an adjustment opening is provided at an end face of an end that is of the spring adjustment shaft sleeve and that is away from the elastic structure, and the spring adjustment shaft sleeve is rotated through the adjustment opening, to adjust a spring force of the elastic structure.
6. 6 . The rotating shaft apparatus according to claim 1 , wherein the support comprises a first support arm, a second support arm, and a third support arm, extension directions of the second support arm and the spindle are the same, the first support arm and the third support arm are respectively disposed at two opposite ends of the second support arm, and both the first support arm and the second support arm extend towards a side close to the spindle; and a first connection plate is disposed on the first support arm, a second connection plate is disposed on a second connection arm relative to the first connection plate, a first connection hole is provided at an end that is of the first connection plate and that is close to the spindle, a second connection hole is provided at a position that is on the second connection plate and that is opposite to the first connection hole, and the spindle passes through the first connection hole and the second connection hole, and rotatably fits in the first connection hole and the second connection hole.
7. 7 . The rotating shaft apparatus according to claim 6 , wherein a third connection hole is provided at an end that is of the first connection plate and that is away from the spindle, and a fourth connection hole is provided on the second connection plate relative to the third connection hole; and two first rotating shafts are respectively disposed at two opposite ends of the second support plate in an extension direction, and the two first rotating shafts respectively pass through the third connection hole and the fourth connection hole, and rotatably fit in the third connection hole and the fourth connection hole.
8. 8 . The rotating shaft apparatus according to claim 7 , wherein the support is of a split structure and comprises a main support and a secondary support, the main support comprises the first support arm and the second support arm, the secondary support comprises the third support arm and a connection portion that is disposed at an end that is of the third support arm and that is close to the second support arm, and the connection portion is fixedly connected to the second support arm.
9. 9 . The rotating shaft apparatus according to claim 1 , wherein the rotating shaft apparatus further comprises a damping member, and the damping member is disposed on the spindle to provide a damping force.
10. 10 . The rotating shaft apparatus according to claim 1 , wherein the at least one spindle comprises a first spindle and a second spindle, and the crank-slider mechanism group comprises a first crank-slider mechanism and a second crank-slider mechanism; and the first spindle and the second spindle are disposed on the adapter member at an interval, the first crank-slider mechanism acts on the first spindle to provide a torque, and the second crank-slider mechanism acts on the second spindle to provide a torque.
11. 11 . The rotating shaft apparatus according to claim 1 , wherein the at least one crank comprises a first crank and a second crank, the at least one guide bar comprises a first guide bar and a second guide bar, and the elastic assembly comprises a first elastic structure and a second elastic structure; the first crank and the second crank are disposed on the spindle at an interval, a fifth connection hole is provided at an end that is of the first crank and that is away from the spindle, a sixth connection hole is provided on the second crank relative to the fifth connection hole, two second rotating shafts are respectively disposed at two opposite ends of the first support plate in an extension direction, and the two second rotating shafts respectively pass through the fifth connection hole and the sixth connection hole, and rotatably fit in the fifth connection hole and the sixth connection hole; and the first guide bar and the second guide bar are disposed on the first support plate at an interval, the first elastic structure is sleeved on the first guide bar, and the second elastic structure is sleeved on the second guide bar.
12. 12 . An electronic device, comprising a rotating shaft apparatus, and a display apparatus or an all-in-one machine; wherein the rotating shaft apparatus comprises: an adapter member, fixedly connected to a load comprising the display apparatus or the all-in-one machine; at least one spindle, fixedly connected to the adapter member; and a crank-slider mechanism group, comprising one or more crank-slider mechanisms that act on the spindle to provide a torque, wherein the torque partially or completely counteracts a gravitational torque of the load; and each crank-slider mechanism of the one or more crank-slider mechanisms comprises: a support, connected to the spindle and rotatable around the spindle, wherein an end that is of the support and that is away from the at least one spindle is fixedly connected to the support; at least one crank, disposed in the support, wherein one end of the crank in an extension direction is fixedly connected on the spindle and rotates with the spindle; a spring guide assembly, comprising: a first support plate, wherein the first support plate is connected to the other end of the crank in the extension direction, and the first support plate is rotatable relative to the crank; and at least one guide bar, wherein one end of the guide bar in an extension direction is fixedly connected to the first support plate; a second support plate, connected to the support and rotatable relative to the support, wherein a slot is provided on the second support plate, and the other end of the guide bar in the extension direction slidably fits in the slot; and an elastic assembly, comprising at least one elastic structure, wherein the elastic structure is sleeved on the guide bar and is in a compressed state, one end of the elastic structure abuts against the first support plate, and the other end abuts against the second support plate.
13. 13 . The electronic device according to claim 12 , wherein a connection position between the adapter member and the display apparatus is above a center of gravity of the display apparatus; or a connection position between the adapter member and the all-in-one machine is above a center of gravity of the all-in-one machine.
14. 14 . The electronic device according to claim 12 , wherein an accommodation cavity is provided at an end that is of the support and that is close to the display apparatus or the all-in-one machine, and the rotating shaft apparatus is disposed in the accommodation cavity.
15. 15 . The electronic device according to claim 12 , wherein the each crank-slider mechanism further comprises a shaft sleeve, the shaft sleeve is fixedly sleeved on the guide bar, and an end that is of the shaft sleeve and that is close to the second support plate slidably fits in the slot; and the elastic structure is sleeved on an outer wall of the shaft sleeve.
16. 16 . The electronic device according to claim 15 , wherein the guide bar comprises a guide post and a sliding rod, extension directions of the guide post and the sliding rod are the same, one end of the guide post in an extension direction is fixedly connected to the first support plate, the other end is fixedly connected to the sliding rod, and the sliding rod passes through the slot; and a positioning structure is disposed on the guide post, and is configured to position the shaft sleeve.
17. 17 . The electronic device according to claim 16 , wherein the positioning structure is a dowel pin, a dowel hole adapted to the dowel pin is provided on the shaft sleeve, and the dowel pin fits in the dowel hole to fasten the shaft sleeve on the guide post.
18. 18 . The electronic device according to claim 12 , wherein the each crank-slider mechanism further comprises a spring adjustment shaft sleeve; and an avoidance hole is provided at a position that is on the second support plate and that corresponds to the guide bar, the spring adjustment shaft sleeve is in a threaded connection with the avoidance hole, a spring support portion is disposed at an end that is of the spring adjustment shaft sleeve and that is close to the elastic structure, the spring support portion abuts against the elastic structure, the slot is provided at a position that is on the spring adjustment shaft sleeve and that corresponds to the guide bar, an adjustment opening is provided at an end face of an end that is of the spring adjustment shaft sleeve and that is away from the elastic structure, and the spring adjustment shaft sleeve is rotated through the adjustment opening, to adjust a spring force of the elastic structure.
19. 19 . The electronic device according to claim 12 , wherein the support comprises a first support arm, a second support arm, and a third support arm, extension directions of the second support arm and the spindle are the same, the first support arm and the third support arm are respectively disposed at two opposite ends of the second support arm, and both the first support arm and the second support arm extend towards a side close to the spindle; and a first connection plate is disposed on the first support arm, a second connection plate is disposed on a second connection arm relative to the first connection plate, a first connection hole is provided at an end that is of the first connection plate and that is close to the spindle, a second connection hole is provided at a position that is on the second connection plate and that is opposite to the first connection hole, and the spindle passes through the first connection hole and the second connection hole, and rotatably fits in the first connection hole and the second connection hole.
20. 20 . The electronic device according to claim 19 , wherein a third connection hole is provided at an end that is of the first connection plate and that is away from the spindle, and a fourth connection hole is provided on the second connection plate relative to the third connection hole; and two first rotating shafts are respectively disposed at two opposite ends of the second support plate in an extension direction, and the two first rotating shafts respectively pass through the third connection hole and the fourth connection hole, and rotatably fit in the third connection hole and the fourth connection hole.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2022/075477, filed on Feb. 8, 2022, which claims priority to Chinese Patent Application No. 202121418820.4, filed on Jun. 24, 2021. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD This application relates to the field of electronic device technologies, and in particular, to a rotating shaft apparatus and an electronic device. BACKGROUND A display or an all-in-one machine is increasingly used in scenarios such as a lobby, a reception desk, and a home, and users have a higher requirement for a light, thin and simple appearance of the display or the all-in-one machine. For the display or the all-in-one machine, how to reduce a size of a rotating shaft and hide the rotating shaft on a support becomes a key to have the light, thin and simple appearance of the entire machine. To obtain a lightweight feel of adjusting a pitch angle, a conventional rotating shaft of the display or the all-in-one device uses a torsion spring to counteract a gravitational torque of a display. Due to a limitation of a principle, the rotating shaft needs to be disposed at the center or a lower position of the display. The appearance of the entire machine is similar, and the rotating shaft protrudes from a back of the display. As a result, the back of the display protrudes or a spacing between the display and the support is large, and the light, thin and simple appearance is hardly achieved. SUMMARY Embodiments of this disclosure provide a rotating shaft apparatus and an electronic device. A crank-slider mechanism is disposed on a spindle, and a compression spring is disposed in the crank-slider mechanism to provide a spring force that changes with rotation of a rotating shaft. In this way, the rotating shaft apparatus provides assistance in counteracting a gravitational torque of a load. This implements a lightweight feel of an operation of adjusting a pitch angle of the load, reduces space occupied by the rotating shaft apparatus, and meets a requirement for lightness and thinness of the load after the rotating shaft apparatus is installed. According to a first aspect, this disclosure provides a rotating shaft apparatus, including an adapter member, at least one spindle, and a crank-slider mechanism group. The adapter member is fixedly connected to a load. The spindle is fixedly connected to the adapter member. The crank-slider mechanism group includes at least one crank-slider mechanism. The crank-slider mechanism acts on the spindle to provide a torque, and the torque partially or completely counteracts a gravitational torque of the load. Specifically, the crank-slider mechanism includes a support, at least one crank, a spring guide assembly, a second support plate, and an elastic assembly. The support is connected to the spindle, and is rotatable around the spindle. The crank is disposed in the support, and one end of the crank in an extension direction is fixedly connected to the spindle. The spring guide assembly includes a first support plate and a guide bar. The first support plate is connected to the other end of the crank in the extension direction, and the first support plate is rotatable relative to the crank. One end of the guide bar in an extension direction is fixedly connected to the first support plate. The second support plate is connected to the support, and is rotatable relative to the support. A slot is provided on the second support plate, and the other end of the guide bar in the extension direction slidably fits in the slot. The elastic assembly includes at least one elastic structure. The elastic structure is sleeved on the guide bar and is in a compressed state, one end of the elastic structure abuts against the first support plate, and the other end abuts against the second support plate. According to the rotating shaft apparatus provided in an embodiment of this disclosure, the crank-slider mechanism is disposed on the spindle, and the elastic assembly is disposed in the crank-slider mechanism to provide a spring force that changes with rotation of a rotating shaft. In this way, the rotating shaft apparatus provides assistance in counteracting a gravitational torque of a load. This reduces space occupied by the rotating shaft apparatus, and meets a requirement for lightness and thinness of the load after the rotating shaft apparatus is installed. In another possible implementation, the crank-slider mechanism further includes a shaft sleeve. The shaft sleeve is fixedly sleeved on the guide bar. An end that is of the shaft sleeve and that is close to the second support plate slidably fits in the slot. The elastic structure is sleeved on an outer wall of the shaft sleeve. In this way, in a rotation process of the spindle, when the elastic structure changes an amount of compression, a compression spring and an outer wall of