Synchronizing mechanism applied to hinge of portable electronic equipment

Abstract

The utility model provides a synchronizing mechanism applied to a hinge of portable electronic equipment, which comprises a synchronous swing arm positioned on a first side, a synchronous swing arm positioned on a second side and a gear meshing connection mechanism, and an elastic mechanism passing through self-locking force and / or rotation resistance is arranged on the hinge; the synchronizing mechanism is further provided with an anti-backlash gear on the synchronizing swing arm shaft, the anti-backlash gear and the first gear are provided with opposite end faces, and cam matching mechanisms are arranged on the opposite end faces. According to the utility model, the elastic mechanism for providing self-locking force or rotation resistance in the hinge can be used for eliminating a gap between the gear connected with the synchronous swing arm and the gear matched with the synchronous swing arm, so that the synchronous performance can be improved under the conditions of not increasing the thickness of a product and not changing a motion mode; the synchronous clearance angle of the swing arms on the two sides is reduced to 2 degrees or even smaller, and the synchronous clearance angle adjusting device is a low-cost technical improvement scheme which is adaptive to the portable electronic equipment and is used for improving the synchronous performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to a synchronous mechanism for portable electronic equipment hinge, the portable electronic equipment hinge can be mobile phone, notebook computer etc. BACKGROUND

[0002] In the hinge of portable electronic equipment, such as folding screen mobile phone, two side housings need to be synchronously and reversely rotated. At present, two synchronous swing arms are respectively connected with two side housings, and the synchronous swing arms are connected through a gear set. However, due to manufacturing errors of the gear, the gap between the gear profiles produced based on the current manufacturing process, for the four-gear synchronous mechanism, there is a synchronous virtual angle of nearly 10° between the two swing arms, and the synchronous performance needs to be improved. Moreover, as applied to the hinge of portable electronic equipment, the solution must consider the light and thin requirements of the product. SUMMARY

[0003] The utility model provides a synchronous mechanism for portable electronic equipment hinge, adopts relatively simple mode, can under the condition of not changing the diameter, modulus of gear, and can utilize the elastic mechanism of hinge itself, improves synchronous performance. For this purpose, the utility model adopts the following technical scheme:

[0004] The synchronous mechanism for portable electronic equipment hinge, including the synchronous swing arm at first side and the synchronous swing arm at second side, synchronous swing arm shaft and gear meshing connection mechanism, the gear meshing connection structure includes the first gear on the synchronous swing arm and the gear meshing connection with first gear, the first gear is sleeved on the synchronous swing arm shaft, the elastic mechanism through self-locking force and / or rotation resistance is arranged on the hinge, characterized by, the synchronous mechanism is also provided with the backlash gear on the synchronous swing arm shaft, the backlash gear and first gear are all rotationally connected with synchronous swing arm shaft, the backlash gear is also meshed with the gear meshing connection with first gear, the backlash gear and first gear have the end face of opposite, and cam cooperation mechanism is arranged on the end face of opposite, the end face of opposite is tightly pressed by the elastic mechanism, and the backlash gear and first gear have a certain angular misregistration by the control of cam cooperation mechanism, so that the gap between first gear and the gear meshing connection with first gear is eliminated.

[0005] On the basis of adopting the above technical scheme, the utility model can also adopt the following further technical scheme, or use these further technical schemes in combination:

[0006] The elastic mechanism is arranged on the other side of the synchronous swing arm, and a self-locking and / or rotation resistance matching mechanism is arranged between the synchronous swing arm and the elastic mechanism, the elastic mechanism clamps the self-locking and / or rotation resistance matching mechanism, the synchronous swing arm with the first gear and the anti-backlash gear on the first side of the synchronous swing arm on the abutting seat.

[0007] The first gear is a gear on the synchronous swing arm on the first side, and the gear meshing connected with the first gear is a gear on the synchronous swing arm on the second side.

[0008] The gear meshing connected with the first gear is provided with two gears which are meshed with each other, one of the two gears is meshed with the first gear on the synchronous swing arm on the first side and the anti-backlash gear, and the other gear is meshed with the first gear on the synchronous swing arm on the first side and the anti-backlash gear.

[0009] The spring in the elastic mechanism is sleeved on the synchronous swing arm shaft.

[0010] The first gear and the anti-backlash gear have the same diameter and the same module.

[0011] The utility model discloses a kind of synchronous swing arms, comprising first gear, anti-backlash gear, elastic mechanism, synchronous swing arm shaft, hinge, and the first gear is arranged on the synchronous swing arm on the first side, and the anti-backlash gear is arranged on the synchronous swing arm on the second side, and the elastic mechanism is arranged on the first side of the synchronous swing arm, and the elastic mechanism is arranged on the second side of the synchronous swing arm, and the hinge is arranged in the hinge, and the abutting seat is arranged on the fixed support, and the synchronous swing arm shaft is installed on the abutting seat, and the anti-backlash gear is located between abutting seat and first gear, and the elastic mechanism is located on the other side of the synchronous swing arm, and the self-locking and / or rotation resistance matching mechanism is arranged between synchronous swing arm and the elastic mechanism, and the elastic mechanism clamps the self-locking and / or rotation resistance matching mechanism, the synchronous swing arm with the first gear and the anti-backlash gear on the first side of the synchronous swing arm on the abutting seat. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of the embodiment provided by the utility model.

[0013] Figure 2 It is an exploded view of the embodiment provided by the utility model.

[0014] Figure 3 It is a top view of the embodiment provided by the utility model in open state.

[0015] Figure 4 It is Figure 3 A-A sectional view of the embodiment provided by the utility model, which shows that the gear gap is eliminated under the control of cam. DETAILED DESCRIPTION

[0016] Referring to the drawings. The synchronous mechanism applied to the hinge of portable electronic equipment comprises a synchronous swing arm 11 on the first side and a synchronous swing arm 12 on the second side, a synchronous swing arm shaft 110 of the synchronous swing arm 11 on the first side, a synchronous swing arm shaft 120 of the synchronous swing arm 12 on the second side, and a gear meshing connection mechanism, which comprises a gear 1 on the synchronous swing arm 11 on the first side and a gear 2 on the synchronous swing arm 12 on the second side, and two intermediate gears 3 and 4, the gear 1 is sleeved on the synchronous swing arm shaft 110, the gear 2 is sleeved on the synchronous swing arm shaft 120, and both are rotationally connected with the synchronous swing arm shaft.

[0017] The hinge is provided with an elastic mechanism through self-locking force and / or rotation resistance, and the self-locking and / or rotation resistance matching mechanism can comprise a pair of cams, which comprises a moving cam 51 arranged on the synchronous swing arm and sleeved on the synchronous swing arm shaft and a static cam 52 sleeved on the synchronous swing arm shaft and unable to rotate relative to the shaft but able to move axially, and the elastic mechanism adopts a spring 6 (a coil spring or a disc spring can be used).

[0018] The synchronous mechanism is further provided with an anti-backlash gear 111 and 121 on the synchronous swing arm shaft 110 and 120 respectively, the anti-backlash gear 111 and the gear 1 are rotationally connected with the synchronous swing arm shaft 110, the anti-backlash gear 121 and the gear 2 are rotationally connected with the synchronous swing arm shaft 120, the anti-backlash gear 111 is also meshingly connected with the gear 3, and the anti-backlash gear 121 is also meshingly connected with the gear 4.

[0019] The anti-backlash gear 111 and the gear 1 have facing end faces, and a cam matching mechanism 112 is arranged on the facing end faces, which can be that the end face of one of the gears is a cam face, and the end face of the other gear is provided with a protrusion matched with the cam face to form the cam matching mechanism 112 (there is also a cam matching mechanism 122 between the gear 2 and the anti-backlash gear 121), the facing end faces are tightly pressed by the elastic mechanism and controlled through the cam matching mechanism, under the driving action of the elastic mechanism, the anti-backlash gear is rotated through the cam inclined surface, so that the anti-backlash gear and the gear carried on the synchronous swing arm are angularly misaligned, and the gap between the gears 3 and 4 and the gears carried on the synchronous swing arm is eliminated. In this way, the original axial elastic mechanism in the hinge can be directly used to directly eliminate the circumferential gear profile gap, improve the synchronization performance, and can not change the diameter and modulus of the gear, not increase the thickness of the product, and not change the original movement mode. For the four-shaft gear synchronous mechanism of the embodiment, the synchronous virtual position can be reduced to 2°.

[0020] The anti-backlash gear 111 is arranged adjacent to the gear 1 on the synchronous swing arm shaft 110, the anti-backlash gear 121 is arranged adjacent to the gear 2 on the synchronous swing arm shaft 120, the elastic mechanism is arranged on the first side of the synchronous swing arm and the anti-backlash gear is arranged on the second side of the synchronous swing arm, a fixed support 200 is arranged in the hinge, an abutting seat 201 is arranged on the fixed support 200, the synchronous swing arm shafts 110 and 120 are installed on the abutting seat 201, and the gear shafts 30 and 40 of the gears 3 and 4 are also installed on the abutting seat 201. The anti-backlash gear 111 is located between the abutting seat 201 and the gear 1, the anti-backlash gear 121 is located between the abutting seat 201 and the gear 2, the elastic mechanism is located on the other side of the synchronous swing arm, and the self-locking and / or rotation resistance matching mechanism, the gears on the synchronous swing arm and the anti-backlash gears are in turn tightly pressed against the abutting seat. The springs 6 arranged in the elastic mechanism are respectively sleeved on the synchronous swing arm shafts 110 and 120.

[0021] The embodiment can be applied in a flexible screen folding mobile phone, and the synchronous swing arm 11 on the first side and the synchronous swing arm 12 on the second side are respectively connected with a first side shell and a second side shell in the flexible screen folding mobile phone.

[0022] The scheme of the utility model can also be applied in the occasion without an intermediate gear, that is, in a two-shaft synchronous mechanism, at this time, there is no intermediate gear between the gears carried by the two synchronous swing arms. In implementation, only the gear carried by one of the synchronous swing arms can be configured with an anti-backlash gear and simultaneously sleeved on the synchronous swing arm shaft thereof, and the gear on the other synchronous swing arm is engaged. At this time, not only the above technical effects can be achieved, but also the synchronous virtual position can be completely eliminated.

[0023] The above only describes specific embodiments of the utility model, but the structural features of the utility model are not limited to this, any person skilled in the art makes changes or modifications in the field of the utility model, and the changes or modifications are covered in the protection scope of the utility model.

[0024] It should be noted that the terms "include" and "have" and any variations thereof in the specification and claims of the utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "mount", "arrange", "provide with", "connect", "connect", "sleeve" should be understood broadly. For example, it can be fixedly connected, detachably connected or integrally configured, it can be mechanically connected or electrically connected, it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In the description of the utility model, need understanding is, the term '' one end '' '' the other end '' '' outside '' '' inside '' '' horizontal '' '' end '' '' length '' '' outer end '' '' left '' '' right '' and so on indicate the orientation or positional relation is based on the orientation or positional relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a particular orientation, is constructed and operated in a particular orientation, therefore can not be understood as limiting the utility model. The phrase '' first '' '' second '' is only used for the convenience of description, and is not indicating or implying relative importance.

Claims

1. A synchronizing mechanism for a hinge of a portable electronic device, comprising a synchronizing swing arm on a first side and a synchronizing swing arm on a second side, a synchronizing swing arm shaft, and a gear meshing connection mechanism, the gear meshing connection mechanism comprising a first gear on the synchronizing swing arm, and a gear meshing connected with the first gear, the first gear being sleeved on the synchronizing swing arm shaft, an elastic mechanism being provided on the hinge through a self-locking force and / or a rotation resistance; characterized in that, The synchronous mechanism is further provided with a backlash gear on the synchronous swing arm shaft, the backlash gear and the first gear are both in rotational connection with the synchronous swing arm shaft, the backlash gear is also in meshing connection with the gear in meshing connection with the first gear, the backlash gear and the first gear have facing end surfaces, and a cam cooperation mechanism is arranged on the facing end surfaces, the facing end surfaces are tightly pressed by the elastic mechanism, and the backlash gear and the first gear are controlled to have a certain angular misalignment through the cam cooperation mechanism, so that the backlash between the first gear and the gear in meshing connection with the first gear is eliminated.

2. The synchronization mechanism for a portable electronic device hinge of claim 1, wherein, The backlash gear and the first gear are adjacently arranged on the synchronous swing arm shaft, the elastic mechanism is located on the first side of the synchronous swing arm, and the backlash gear is located on the second side of the synchronous swing arm, a fixed support is arranged in the hinge, an abutting seat is arranged on the fixed support, the synchronous swing arm shaft is installed on the abutting seat, the backlash gear is located between the abutting seat and the first gear, the elastic mechanism is located on the other side of the synchronous swing arm, a self-locking and / or rotational resistance cooperation mechanism is arranged between the synchronous swing arm and the elastic mechanism, and the elastic mechanism tightly presses the self-locking and / or rotational resistance cooperation mechanism, the synchronous swing arm with the first gear, and the backlash gear on the abutting seat.

3. The synchronization mechanism for a portable electronic device hinge of claim 1, wherein, The first gear is a gear on the first side of the synchronous swing arm, and the gear in meshing connection with the first gear is a gear on the second side of the synchronous swing arm.

4. The synchronization mechanism for a portable electronic device hinge of claim 1, wherein, The gear in meshing connection with the first gear is provided with two gears which are in meshing connection with each other, one of the two gears is in meshing connection with the first gear and the backlash gear on the first side of the synchronous swing arm, and the other gear is in meshing connection with the first gear and the backlash gear on the first side of the synchronous swing arm.

5. The synchronization mechanism for a portable electronic device hinge of claim 1, 2, or 3, wherein, A spring sleeve is arranged in the elastic mechanism and surrounds the synchronous swing arm shaft.

6. The synchronization mechanism for a portable electronic device hinge of claim 1, 2, or 3, wherein, The first gear and the backlash gear have the same diameter and the same module.

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