Search

CN-224214560-U - Hinge and foldable electronic equipment

CN224214560UCN 224214560 UCN224214560 UCN 224214560UCN-224214560-U

Abstract

The application provides a hinge and foldable electronic equipment, and relates to the technical field of electronic equipment accessories. The hinge comprises a first hinge mechanism and a second hinge mechanism which are symmetrically arranged, wherein the first hinge mechanism and the second hinge mechanism both comprise an input shaft capable of rotating along a central shaft of the input shaft, a synchronous gear and a swing arm, the swing arm is positioned on one side of the synchronous gear in the radial direction and is provided with a tooth surface structure, the tooth surface structure is meshed with the synchronous gear, the input shaft is in transmission connection with the synchronous gear or the swing arm, and the synchronous gear of the first hinge mechanism is meshed with the synchronous gear of the second hinge mechanism. Through this setting, the motion synchronicity of the swing arm of hinge both sides when rotating has been improved, helps improving the motion synchronicity of folding electronic equipment's first folding main part and second folding main part.

Inventors

  • GAO BAOQI
  • ZHANG XUEHU
  • GUO JINHAI
  • LIU JIANWEI
  • XIONG LEI
  • GONG SHENGHAN
  • WU JIACHEN

Assignees

  • 北京小米移动软件有限公司

Dates

Publication Date
20260508
Application Date
20250421

Claims (9)

  1. 1. A hinge, characterized in that it comprises a first hinge mechanism (1) and a second hinge mechanism (2) arranged symmetrically, said first hinge mechanism (1) and said second hinge mechanism (2) each comprising: An input shaft (11) rotatable along its own central axis; The device comprises a synchronous gear (12) and a swing arm (13), wherein the swing arm (13) is positioned at one side of the synchronous gear (12) in the radial direction, and the swing arm (13) is provided with a tooth surface structure which is meshed with the synchronous gear (12); wherein the input shaft (11) is in transmission connection with the synchronous gear (12) or the swing arm (13), and the synchronous gear (12) of the first hinge mechanism (1) is meshed with the synchronous gear (12) of the second hinge mechanism (2); The first hinge mechanism (1) and the second hinge mechanism (2) further comprise a speed reducer (14), the input end of the speed reducer (14) is connected with the input shaft (11), and the output end of the speed reducer (14) is connected with the synchronous gear (12) or the swing arm (13).
  2. 2. Hinge according to claim 1, characterized in that said reducer (14) comprises a plurality of reduction mechanisms (140) connected in sequence along the axial direction of said input shaft (11).
  3. 3. The hinge according to claim 2, characterized in that said plurality of reduction mechanisms (140) comprises a first reduction mechanism (141) and a second reduction mechanism (142) connected, an input of said first reduction mechanism (141) being connected to said input shaft (11), an output of said second reduction mechanism (142) being connected to said synchronizing gear (12) or to said swing arm (13).
  4. 4. A hinge according to claim 3, characterized in that the first (141) and second (142) reduction mechanisms each comprise a sun gear (1411), a ring gear (1412), a planet carrier (1413) and a plurality of planet gears (1414); A plurality of said planet gears (1414) spaced around said sun gear (1411) and each engaged with said sun gear (1411), said ring gear (1412) surrounding the outer sides of a plurality of said planet gears (1414) and engaged with a plurality of said planet gears (1414), a plurality of said planet gears (1414) mounted on said planet carrier (1413); Wherein the sun gear (1411) of the first reduction mechanism (141) is connected with the input shaft (11), the sun gear (1411) of the second reduction mechanism (142) is connected with a planet carrier (1413) of the first reduction mechanism (141), and the planet carrier (1413) of the second reduction mechanism (142) is connected with the synchronous gear (12) or the swing arm (13).
  5. 5. The hinge according to claim 4, characterized in that said sun gear (1411) is provided with a first connection hole (14111), said first connection hole (14111) being adapted to allow the embedding of the end of said input shaft (11) and of the end of said planet carrier (1413) of said first reduction mechanism (141); The synchronous gear (12) or the swing arm (13) is provided with a second connecting hole (131), and the second connecting hole (131) is used for allowing the end part of the planet carrier (1413) of the second speed reducing mechanism (142) to be embedded.
  6. 6. The hinge according to claim 5, characterized in that the cross-sectional profile shape of the first connection hole (14111) and/or the second connection hole (131) is non-circular.
  7. 7. The hinge according to claim 4, wherein end-face stoppers (14121) are provided on both sides in the axial direction of the ring gear (1412), the end-face stoppers (14121) are annular, and the end-face stoppers (14121) are used for axially limiting the planetary gears (1414) and the carrier (1413).
  8. 8. A foldable electronic device, characterized in that it comprises the hinge according to any one of claims 1 to 7, further comprising a first folding body and a second folding body, said hinge being arranged between said first folding body and said second folding body, said first folding body and said second folding body being rotatably connected by said hinge.
  9. 9. The electronic device according to claim 8, further comprising a driving member drivingly connected to the input shaft (11) of the hinge, the driving member being adapted to rotate the input shaft (11) about its central axis.

Description

Hinge and foldable electronic equipment Technical Field The present disclosure relates to electronic devices, and particularly to a hinge and a foldable electronic device. Background Folding electronic devices such as folding mobile phones and folding tablet computers are popular in the market, and the hinge is used as a core component of the foldable electronic device, so that the realization of a folding function plays a key role. The foldable electronic device generally comprises two folding main bodies which are connected in a rotating way through hinges, in the related art, the existing hinges are respectively connected with the two folding main bodies through swing arms, but in the rotating process, the swing arms on two sides of the hinges can generate the problem of asynchronous rotation, so that the rotation of the two folding main bodies is asynchronous, and the use experience of a user is influenced. Disclosure of utility model In view of the above, the present application provides a hinge and a foldable electronic device, which can improve the synchronization of the swing arms at both sides of the hinge during movement. Specifically, the method comprises the following technical scheme: In a first aspect, the present application provides a hinge comprising first and second hinge mechanisms symmetrically arranged, each comprising: the input shaft can rotate along the central shaft of the input shaft; The device comprises a synchronous gear and a swing arm, wherein the swing arm is positioned at one side of the radial direction of the synchronous gear, and is provided with a tooth surface structure which is meshed with the synchronous gear; The input shaft is in transmission connection with the synchronous gear or the swing arm, and the synchronous gear of the first hinge mechanism is meshed with the synchronous gear of the second hinge mechanism. In the technical scheme provided by the application, the swing arms in the first hinge mechanism and the second hinge mechanism are meshed with the synchronous gear through the tooth surface structure, and the synchronous gear of the first hinge mechanism is meshed with the synchronous gear of the second hinge mechanism, so that the swing arms of the first hinge mechanism and the swing arms of the second hinge mechanism are linked through the synchronous gear, the swing arms of the first hinge mechanism and the swing arms of the second hinge mechanism can synchronously rotate, the motion synchronicity of the swing arms at two sides of the hinge during rotation is improved, the motion synchronicity of the first folding main body and the second folding main body of the foldable electronic equipment is improved, and the use experience of a user is improved. In some possible embodiments, the first hinge mechanism and the second hinge mechanism further comprise a speed reducer, an input end of the speed reducer is connected with the input shaft, and an output end of the speed reducer is connected with the synchronous gear or the swing arm. According to the technical scheme provided by the application, the input shaft is connected with the synchronous gear/swing arm through the arrangement of the speed reducer, so that the effective regulation and control of the output rotating speed of the hinge are realized, the speed reducer can convert the high-speed low-torque input of the input end of the hinge into the low-speed high-torque output of the swing arm, the effect of reducing and increasing the torque is achieved, the hinge can still rotate stably when bearing the first hinge mechanism and the second hinge mechanism, and the phenomenon of clamping or unbending caused by insufficient torque is avoided. In some possible embodiments, the speed reducer includes a plurality of speed reducing mechanisms connected in series along an axial direction of the input shaft. According to the technical scheme provided by the application, the speed reducer comprises a plurality of speed reducing mechanisms which are sequentially connected, so that the multi-stage serial speed reducing mechanism is formed, the speed reducing ratio is improved, finer speed reducing ratio control is realized, the load pressure of the speed reducer is dispersed, and the deformation problem caused by local stress concentration is avoided. In some possible embodiments, the plurality of speed reducing mechanisms includes a first speed reducing mechanism and a second speed reducing mechanism that are connected, an input end of the first speed reducing mechanism is connected to the input shaft, and an output end of the second speed reducing mechanism is connected to the synchronizing gear or the swing arm. In the technical scheme provided by the application, the power of the output shaft is sequentially transmitted to the first speed reducing mechanism and the second speed reducing mechanism and then transmitted to the swing arm, the torque of the swing arm is increased through the two-stage speed re