WO2021218363A1

WO2021218363A1 - Synchronization mechanism, rotary shaft kit and electronic device

Info

Publication number: WO2021218363A1
Application number: PCT/CN2021/078778
Authority: WO
Inventors: 李明阳
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-04-30
Filing date: 2021-03-02
Publication date: 2021-11-04
Also published as: CN113586593A

Abstract

Disclosed are a synchronization mechanism (1), a rotary shaft kit (2) and an electronic device (4). The synchronization mechanism (1) comprises a first support (10) and a second support (20), which are connected to each other. A first accommodating space (11) is provided in the first support (10), a second accommodating space (21) is provided in the second support (20), a first inner gear (30) is arranged in the first accommodating space (11) and can rotate relative to the first support (10), and a second inner gear (40) is arranged in the second accommodating space (21) and can rotate relative to the second support (20); a first accommodating space (31) is provided in the first inner gear (30), and a second accommodating space (41) is provided in the second inner gear (40); a first spur gear (50) comprises a first sub-spur gear (51) arranged in the first accommodating space (31) and a second sub-spur gear (52) arranged outside the first accommodating space (31), and the first sub-spur gear (51) is rotationally connected to the first inner gear (30); and a second spur gear (60) comprises a third sub-spur gear (61) arranged in the second accommodating space (41) and a fourth sub-spur gear (62) arranged outside the second accommodating space (41), the third sub-spur gear (61) is rotationally connected to the second inner gear (40), and the fourth sub-spur gear (62) is rotationally connected to the second sub-spur gear (52).

Description

Synchronization mechanism, shaft kit, electronic equipment

Technical field

This application belongs to the technical field of electronic products, and specifically relates to a synchronization mechanism, a rotating shaft kit, and an electronic device.

Background technique

With the continuous development of electronic products, electronic products have become popular among users due to their portability and diversified operability. But at the same time, users' expectations and requirements for electronic products are getting higher and higher. For example, in flexible electronic equipment, the shaft kit is one of the important components, and the synchronization mechanism is one of the important components in the shaft kit. The synchronization mechanism usually consists of a plurality of gears matching to achieve synchronous rotation. However, in the current synchronization mechanism, the number of gear pairs is large, and the accumulated idle distance increases, which reduces the synchronization effect and cannot guarantee the precision of the synchronization mechanism.

Summary of the invention

In view of this, the first aspect of the present application provides a synchronization mechanism, and the synchronization mechanism includes:

A first bracket and a second bracket that are connected, the first bracket is provided with a first accommodating space, and the second bracket is provided with a second accommodating space;

A first internal gear and a second internal gear, the first internal gear is disposed in the first accommodating space and is rotatable relative to the first bracket, and the second internal gear is disposed in the second accommodating space Inside and rotatable relative to the second bracket; a first accommodating space is provided in the first internal gear, and a second accommodating space is provided in the second internal gear;

A first spur gear and a second spur gear, the first spur gear includes a first sub-spur gear arranged in the first accommodating space and a second sub-spur gear arranged outside the first accommodating space , The first spur gear is rotatably connected to the first internal gear; the second spur gear includes a third spur gear arranged in the second accommodating space and a third spur gear arranged in the second accommodating space The outer fourth sub spur gear, the third sub spur gear is rotatably connected to the second internal gear, and the fourth sub spur gear is rotatably connected to the second sub spur gear; when the first internal gear rotates , The first internal gear, the second internal gear, the first spur gear, and the second spur gear cooperate with each other to make the second internal gear rotate synchronously with the first internal gear.

A second aspect of the present application provides a rotating shaft kit, which includes a protective shell and the synchronization mechanism provided in the first aspect of the present application, and the synchronization mechanism is installed on the protective shell.

The shaft kit provided in the second aspect of the present application adopts the synchronization mechanism provided in the first aspect of the present application to reduce the amount of accumulated idle travel, thereby improving the synchronization effect of the shaft kit.

A third aspect of the present application provides an electronic device. The electronic device includes a housing, a flexible screen, and the hinge kit provided in the second aspect of the present application. The flexible screen is mounted on the housing, and the The housing includes a first sub-housing and a second sub-housing arranged opposite to each other. The first sub-housing is connected to the first internal gear in the rotating shaft kit, and the second sub-housing is connected to the rotating shaft kit. The second internal gear.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings that need to be used in the embodiments of the present application will be described below.

FIG. 1 is a schematic structural diagram of a synchronization mechanism in an embodiment of this application.

Figure 2 is an exploded view of Figure 1.

3 is a schematic diagram of the structure of the first bracket, the first internal gear, and the first spur gear in FIG. 1.

4 is a schematic diagram of the structure of the second bracket, the second internal gear, and the second spur gear in FIG. 1.

Fig. 5 is a schematic diagram of the cooperation of the first internal gear, the second internal gear, the first spur gear and the second spur gear in Fig. 1.

FIG. 6 is a schematic diagram of the synchronization mechanism in an embodiment of the application when it is deployed.

Fig. 7 is a schematic diagram when the synchronization mechanism moves 45° in an embodiment of the application.

Fig. 8 is a schematic diagram of the synchronization mechanism moving 90° in an embodiment of the application.

FIG. 9 is a schematic diagram of the structure of the first internal gear when the first internal gear is deployed in an embodiment of the application.

Fig. 10 is a top view of Fig. 9.

Fig. 11 is a schematic cross-sectional view along the X-X direction in Fig. 10.

Fig. 12 is a schematic diagram of the structure when the first internal gear moves 90° in an embodiment of the application.

Fig. 13 is a top view of Fig. 12.

Fig. 14 is a schematic cross-sectional view along the X-X direction in Fig. 13.

15 is a schematic diagram of the structure of the first internal gear and the first bracket in an embodiment of the application.

16 is a schematic diagram of the structure of the first internal gear and the first bracket in another embodiment of the application.

FIG. 17 is a schematic diagram of the structure of the first spur gear and the second spur gear in an embodiment of the application.

FIG. 18 is a schematic structural diagram of the synchronization mechanism in another embodiment of the application when it is deployed.

Fig. 19 is a schematic cross-sectional view along the X-X direction in Fig. 18.

FIG. 20 is a schematic cross-sectional view of the synchronization mechanism in another embodiment of the application when it moves 90°.

FIG. 21 is a schematic diagram of the structure of the first bracket and the first spur gear in an embodiment of the application.

FIG. 22 is a schematic diagram of the structure of the first bracket and the second bracket in an embodiment of the application.

FIG. 23 is a schematic diagram of the structure of the first bracket in an embodiment of the application.

FIG. 24 is a schematic structural diagram of a shaft kit in an embodiment of this application.

FIG. 25 is a schematic diagram of the structure of an electronic device in an embodiment of this application.

FIG. 26 is a schematic diagram of the structure of an electronic device in another embodiment of this application.

FIG. 27 is a schematic diagram of the structure of the electronic device after the flexible screen is removed in an embodiment of the application.

FIG. 28 is a schematic cross-sectional view of the electronic device in an unfolded state in an embodiment of the application.

FIG. 29 is a schematic cross-sectional view when the electronic device is bent at 45° in an embodiment of the application.

FIG. 30 is a schematic cross-sectional view when the electronic device is bent at 90° in an embodiment of the application.

Label description:

Synchronization mechanism-1, shaft kit-2, protective shell-3, electronic equipment-4, flexible screen-5, shell-6, first sub-shell-7, second sub-shell-8, first bracket- 10. The first accommodating space-11, the second sliding part-12, the rotating part-13, the rotating hole-131, the first through hole-14, the first positioning part-15, the first sub-positioning part-151, the second Sub-positioning part-152, first avoiding groove-16, first fixing part-17, first mounting part-18, second bracket-20, second accommodating space-21, second positioning part-25, third sub Positioning portion-251, fourth sub-positioning portion-252, second avoiding groove-26, second fixing member-27, second mounting member-28, first internal gear-30, first accommodating space-31, A sliding part-32, a second internal gear-40, a second accommodating space-41, a first spur gear-50, a first sub-spur gear-51, a second sub-spur gear-52, a second spur gear-60 , The third sub-spur gear-61, the fourth sub-spur gear-62, the first connecting piece-70, the first groove-71, the second connecting piece-80, and the second groove-81.

Detailed ways

The following are the preferred embodiments of this application. It should be noted that for those of ordinary skill in the art, without departing from the principles of this application, several improvements and modifications can be made, and these improvements and modifications are also regarded as the original The scope of protection applied for.

The embodiment of the present application provides a synchronization mechanism, and the synchronization mechanism includes:

Wherein, the central angle of the arc formed by the first internal gear is less than or equal to 180°.

Wherein, the first internal gear is provided with a first sliding part, the first bracket is provided with a second sliding part, and the first sliding part and the second sliding part cooperate with each other to make the first The internal gear rotates in the first accommodating space.

Wherein, the sliding track of the first sliding part and the second sliding part is consistent with the rotation direction of the first internal gear.

Wherein, the synchronization mechanism further includes a rotating member arranged in the first receiving space and connected to the first bracket, and the first internal gear is sleeved with the rotating member so that the first internal gear is located at the The rotation is performed in the first containing space.

Wherein, the diameter of the second spur gear is larger than that of the first spur gear; the diameter of the fourth spur gear is larger than that of the third spur gear.

Wherein, the first bracket is provided with a first through hole, and the first spur gear penetrates the first through hole.

Wherein, the first bracket is provided with a first positioning portion, the second bracket is provided with a second positioning portion, and the first positioning portion and the second positioning portion cooperate with each other to make the first bracket Connect the second bracket.

Wherein, the orthographic projection of the first bracket on the second bracket coincides with the second bracket.

Wherein, the first bracket is provided with a first avoiding groove, and the second bracket is provided with a second avoiding groove.

Wherein, the first avoiding groove is connected to the second avoiding groove.

Wherein, the first bracket includes a first fixing member, and a first mounting member arranged on opposite sides of the first fixing member and extending in the same direction, the first fixing member and the first mounting member Surrounded to form the first containing space.

Wherein, the second bracket includes a second fixing member, and a second mounting member arranged on opposite sides of the second fixing member and extending in the same direction, the second fixing member and the second mounting member Surrounded to form the second accommodating space.

Wherein, the first avoiding groove may be opened on a side surface of the first mounting member close to the first fixing member, and the second avoiding groove may be opened on the second mounting member close to the second fixing member. One side surface of the piece.

Wherein, the second bracket and the first bracket are arranged in mirror symmetry, the second internal gear and the first internal gear are arranged in mirror symmetry, and the second spur gear and the first spur gear are arranged in mirror symmetry .

The embodiment of the present application also provides a rotating shaft kit. The rotating shaft kit includes a protective shell and a synchronization mechanism as provided in the foregoing embodiments of the present application, and the synchronization mechanism is installed on the protective shell.

The embodiment of the present application also provides an electronic device. The electronic device includes a housing, a flexible screen, and a hinge kit as provided in the foregoing embodiments of the present application. The flexible screen is installed on the housing, and the The housing includes a first sub-housing and a second sub-housing arranged opposite to each other. The first sub-housing is connected to the first internal gear in the rotating shaft kit, and the second sub-housing is connected to the rotating shaft kit. The second internal gear.

Wherein, the electronic device further includes a first connecting piece and a second connecting piece, one end of the first connecting piece is connected to the first internal gear, and the other end of the first connecting piece is connected to the first sub-shell Body; one end of the second connecting member is connected to the second internal gear, and the other end of the second connecting member is connected to the second sub-housing.

Wherein, the first internal gear and the first sub-housing are respectively provided with a first groove, and the first connecting member is provided in the first groove; the second internal gear and the The second sub-shells are respectively provided with second grooves, and the second connecting members are arranged in the second grooves.

Before introducing the technical solution of the present application, technical problems in related technologies will be introduced in detail.

Flexible electronic equipment usually needs to bend the electronic equipment, and the hinge kit is one of the important parts of the controller, and the synchronization mechanism is one of the important parts in the hinge kit. During the rotation of the hinge kit, the synchronization mechanism ensures The rotation movement on both sides of the flexible screen is synchronized, so as to ensure that the bending area of the flexible screen is evenly stressed. The synchronization mechanism is usually composed of a plurality of gears and a bracket equipped with gears. The synchronization effect of the synchronization mechanism is usually related to the production accuracy of the gear, the assembly accuracy, and the number of gear pairs. Among them, the gear pair refers to the basic mechanism composed of two meshing gears. The current synchronization mechanism usually consists of 6 gears forming 5 gear pairs to realize synchronous rotation. In the process of assembling multiple gears, the center distance of the two gears of each gear pair will have a certain deviation, so there will be a gap between the gears, and there will be idle travel during transmission. In addition, the increase in the number of gear pairs will result in a gradual increase in the accumulated idle distance, thereby reducing the synchronization effect of the synchronization mechanism.

In view of this, in order to solve the above-mentioned problems, the present application provides a synchronization mechanism that uses 4 gears to form 3 gear pairs, thereby reducing the number of gear pairs, thereby reducing the amount of accumulated idle travel, and improving the synchronization effect of the synchronization mechanism. .

Please refer to FIGS. 1 to 8 together. FIG. 1 is a schematic structural diagram of a synchronization mechanism in an embodiment of this application. Figure 2 is an exploded view of Figure 1. 3 is a schematic diagram of the structure of the first bracket, the first internal gear, and the first spur gear in FIG. 1. 4 is a schematic diagram of the structure of the second bracket, the second internal gear, and the second spur gear in FIG. 1. Fig. 5 is a schematic diagram of the cooperation of the first internal gear, the second internal gear, the first spur gear and the second spur gear in Fig. 1. FIG. 6 is a schematic diagram of the synchronization mechanism in an embodiment of the application when it is deployed. Fig. 7 is a schematic diagram when the synchronization mechanism moves 45° in an embodiment of the application. Fig. 8 is a schematic diagram of the synchronization mechanism moving 90° in an embodiment of the application. This embodiment provides a synchronization mechanism 1. The synchronization mechanism 1 includes a first bracket 10 and a second bracket 20 connected to each other. The first bracket 10 is provided with a first housing space 11, and the second bracket A second containing space 21 is provided in 20. A first internal gear 30 and a second internal gear 40. The first internal gear 30 is arranged in the first accommodating space 11 and is rotatable relative to the first bracket 10, and the second internal gear 40 is arranged in The second accommodating space 21 can be rotated relative to the second bracket 20. The first internal gear 30 is provided with a first accommodating space 31, and the second internal gear 40 is provided with a second accommodating space 41. A first spur gear 50 and a second spur gear 60. The first spur gear 50 includes a first sub-spur gear 51 arranged in the first accommodating space 31 and a first sub-spur gear 51 arranged outside the first accommodating space 31 The second sub-spur gear 52, the first sub-spur gear 51 is rotatably connected to the first internal gear 30; the second spur gear 60 includes a third sub-spur gear set in the second accommodating space 41 The gear 61 is connected to a fourth sub-spur gear 62 provided outside the second accommodating space 41, the third sub-spur gear 61 is rotatably connected to the second internal gear 40, and the fourth sub-spur gear 62 is rotatably connected The second sub-spur gear 52; when the first internal gear 30 rotates, the first internal gear 30, the second internal gear 40, the first spur gear 50, and the second spur gear The gears 60 cooperate with each other to make the second internal gear 40 and the first internal gear 30 rotate synchronously.

The synchronization mechanism 1 provided in the present application can be applied to various fields, including but not limited to the electronic device 4. The first bracket 10 provided in the present application is used to install the first internal gear 30 and the first spur gear 50, and the second bracket 20 is used to install the second internal gear 40 and the second spur gear 60. In addition, the present application can connect the first support 10 and the second support 20, thereby reducing the difficulty of forming a gear pair, and can reduce the size of the synchronization mechanism 1.

The application also provides the first internal gear 30 and the second internal gear 40. Among them, the internal gear refers to a gear with teeth on the inner circle. In the present application, the first internal gear 30 can be arranged in the first accommodating space 11 and rotatable relative to the first bracket 10, and the second internal gear 40 can be arranged in the second accommodating space 21 And can rotate relative to the second bracket 20. The first accommodating space 11 is used to install the first internal gear 30, and the first internal gear 30 can also rotate relative to the first bracket 10. Optionally, the rotation direction of the first internal gear 30 is consistent with the arrangement direction of the teeth of the first internal gear 30. The second accommodating space 21 is used to install the second internal gear 40, and the second internal gear 40 can also rotate relative to the second bracket 20. Optionally, the rotation direction of the second internal gear 40 is consistent with the arrangement direction of the teeth of the second internal gear 40.

The application also provides the first spur gear 50 and the second spur gear 60. Wherein, the first spur gear 50 includes a first sub-spur gear 51 provided in the first accommodating space 31 and a second sub-spur gear 52 provided outside the first accommodating space 31, which can also be understood as Since the teeth of the first internal gear 30 are located on the inner circle, part of the first spur gear 50 is disposed in the first accommodating space 31 and rotatably connected with the first internal gear 30, thereby forming a gear pair. The remaining first spur gear 50 is arranged outside the first accommodating space 31. The second spur gear 60 can also be understood in the same way. The second spur gear 60 includes a third sub-spur gear 61 arranged in the second accommodating space 41 and a third sub-spur gear 61 arranged outside the second accommodating space 41. The fourth sub spur gear 62 can also be understood as, because the teeth of the second internal gear 40 are located on the inner circle, part of the second spur gear 60 is disposed in the second accommodating space 41 and is rotatably connected with the second internal gear 40, Thus forming a gear pair. The remaining second spur gear 60 is arranged outside the second accommodating space 41 and is rotatably connected with the remaining first spur gear 50 arranged outside the first accommodating space 31, that is, the fourth sub-spur gear 62 is rotatably connected to the second spur gear. The sub-spur gear 52 forms a gear pair.

In summary, the synchronization mechanism 1 provided in the present application forms three gear pairs by using two internal gears, two spur gears and four gears to cooperate with each other. It can also be understood that the first internal gear 30 and the first straight gear The gear 51 constitutes a first gear pair, the second spur gear 52 and the fourth spur gear 62 constitute a second gear pair, and the third spur gear 61 and the second internal gear 40 constitute a third gear pair. When the first internal gear 30 rotates, the first internal gear 30 rotates synchronously with the first sub-spur gear 51, the first sub-spur gear 51 rotates synchronously with the second sub-spur gear 52, and the second sub-spur gear 52 rotates with the fourth sub-spur gear synchronously. The spur gear 62 rotates synchronously, the fourth sub spur gear 62 rotates synchronously with the third sub spur gear 61, and the third sub spur gear 61 rotates synchronously with the second internal gear 40. Finally, the first internal gear 30 and the second internal gear can be realized. The gear 40 realizes synchronous rotation. Please refer to FIGS. 6-8. As shown in FIG. 6, when the synchronization mechanism 1 is not moving, the first internal gear 30 and the second internal gear 40 are both in a horizontal state. As shown in Fig. 7, when the first internal gear 30 moves 45°, the second internal gear 40 can also move 45° synchronously. As shown in Fig. 8, when the first internal gear 30 moves 90°, the second internal gear 40 can also move 90° synchronously. The synchronization mechanism 1 provided by the present application has a simple structure. Three gear pairs can be used to realize the synchronous rotation of the first internal gear 30 and the second internal gear 40. The reduction in the number of gear pairs can reduce the accumulated idle distance and improve the synchronization mechanism. The synchronization effect of 1. At the same time, the precision of the synchronization mechanism 1 can be ensured, and the toothing effect can be improved.

Optionally, the second sub-spur gear 52 is not only arranged outside the first accommodating space 31, but also may be arranged outside the first accommodating space 11. The fourth sub-spur gear 62 is not only arranged outside the second accommodating space 41, but can also be arranged outside the second accommodating space 21.

Optionally, please refer to FIGS. 9-14 together. FIG. 9 is a schematic structural diagram of the first internal gear in an embodiment of the application when it is deployed. Fig. 10 is a top view of Fig. 9. Fig. 11 is a schematic cross-sectional view along the X-X direction in Fig. 10. Fig. 12 is a schematic diagram of the structure when the first internal gear moves 90° in an embodiment of the application. Fig. 13 is a top view of Fig. 12. Fig. 14 is a schematic cross-sectional view along the X-X direction in Fig. 13. In this embodiment, the central angle of the arc formed by the first internal gear 30 is less than or equal to 180°, that is, the shape of the first internal gear 30 is not a complete circle, but only a semicircle or less than a semicircle. It has an arc shape, which makes the surface of the synchronization mechanism 1 smoother and reduces the thickness of the synchronization mechanism 1 (as shown in Fig. 9). Further optionally, when the synchronization mechanism 1 is applied to the electronic device 4, the extension arc of the middle tooth of the first internal gear 30 is greater than or equal to 90° and less than or equal to 180°, because in the electronic device 4, the first inner gear The gear 30 usually needs to be rotated by 90° (as shown in FIG. 14). Therefore, in the present application, the extension arc of the middle teeth of the first internal gear 30 can be greater than or equal to 90° and less than or equal to 180°, thereby reducing the synchronization mechanism 1 Overall weight. Specifically, this embodiment is illustrated by assuming that the extension radian of the teeth in the first internal gear 30 is 180°.

Please also refer to FIG. 15, which is a schematic diagram of the structure of the first internal gear and the first bracket in an embodiment of the application. In this embodiment, the first internal gear 30 is provided with a first sliding portion 32, the first bracket 10 is provided with a second sliding portion 12, the first sliding portion 32 and the second sliding portion 12 cooperate with each other to make the first internal gear 30 rotate in the first accommodating space 11.

The foregoing mentions that the first internal gear 30 can be rotated in the first accommodating space 11. However, this application provides two realizable ways. In one embodiment, a first sliding portion 32 may be provided on the first internal gear 30, and a second sliding portion 12 may be provided on the first bracket 10, and the first sliding portion 32 and the second sliding portion 12 cooperate with each other to make the first internal gear 30 rotate in the first accommodating space 11. Optionally, the first sliding portion 32 may be a sliding rail, and the second sliding portion 12 may be a sliding groove (as shown in FIG. 15). Alternatively, the first sliding portion 32 may be a sliding groove, and the second sliding portion 12 may be a sliding rail. In this embodiment, only the first sliding portion 32 is used as a sliding rail, and the second sliding portion 12 is used as a sliding groove. The first internal gear 30 can rotate through the cooperation of the sliding groove and the sliding rail. In addition, the cooperation of the first sliding portion 32 and the second sliding portion 12 can also enable the first internal gear 30 to be mounted on the first bracket 10.

Optionally, the sliding trajectory of the first sliding part 32 and the second sliding part 12 is consistent with the rotation direction of the first internal gear 30, that is, the sliding trajectory of the first sliding part 32 and the second sliding part 12 is the same as that of the first internal gear. The arrangement direction of the plurality of teeth of 30 remains the same.

Please also refer to FIG. 16, which is a schematic diagram of the structure of the first internal gear and the first bracket in another embodiment of the application. In this embodiment, the synchronization mechanism 1 further includes a rotating member 13 arranged in the first accommodating space 11 and connected to the first bracket 10, and the first internal gear 30 is sleeved with the rotating member 13 to The first internal gear 30 is rotated in the first accommodating space 11.

It can be seen from the foregoing that, in an embodiment, the rotation of the first internal gear 30 can be achieved by the first sliding portion 32 and the second sliding portion 12. In another embodiment, a rotating member 13 can be added, and the rotating member 13 can be arranged in the first accommodating space 11 and connected to the first bracket 10. In addition, a rotating hole 131 is provided on the first internal gear, and then only the first internal gear 30 needs to pass through the rotating hole 131 to enclose the rotating member 13 so that the first internal gear 30 can rotate around the rotating member 13 to make the first internal gear 30 rotate around the rotating member 13 The internal gear 30 rotates in the first housing space 11. In addition, the rotating member 13 can also install the first internal gear 30 on the first bracket 10.

Please refer to FIGS. 17-20 together. FIG. 17 is a structural diagram of a first spur gear and a second spur gear in an embodiment of the application. FIG. 18 is a schematic structural diagram of the synchronization mechanism in another embodiment of the application when it is deployed. Fig. 19 is a schematic cross-sectional view along the X-X direction in Fig. 18. FIG. 20 is a schematic cross-sectional view of the synchronization mechanism in another embodiment of the application when it moves 90°. In this embodiment, the diameter of the second spur gear 52 is larger than that of the first spur gear 51; the diameter of the fourth spur gear 62 is larger than that of the third spur gear 61.

When the synchronization mechanism 1 is in motion, that is, when the first internal gear 30 and the second internal gear 40 are rotating synchronously, the distance between the first spur gear 50 and the second spur gear 60 will have a slight deviation, for example, when the first When the internal gear 30 and the second internal gear 40 rotate 90°, if the diameters of the second spur gear 52 and the first spur gear 51 are the same, the diameters of the fourth spur gear 62 and the third spur gear 61 are the same. At this time, there may be a certain gap between the second sub-spur gear 52 and the fourth sub-spur gear 62, which makes the meshing incomplete. Therefore, in the present application, the diameter of the second sub-spur gear 52 is greater than that of the first sub-spur gear 51; the diameter of the fourth sub-spur gear 62 is greater than the third sub-spur gear 61, so that regardless of the first By how many angles the internal gear 30 and the second internal gear 40 move, the second sub-spur gear 52 and the fourth sub-spur gear 62 can be completely meshed, thereby improving the synchronization effect of the synchronization mechanism 1. As shown in FIG. 19, when the synchronization mechanism 1 is in the unfolded state, the second sub-spur gear 52 and the fourth sub-spur gear 62 can be completely meshed at this time. As shown in FIG. 20, when the synchronization mechanism 1 moves 90°, the diameter of the second spur gear 52 is larger than that of the first spur gear 51; the diameter of the fourth spur gear 62 is larger than that of the first spur gear. The third spur gear 61 can still completely mesh with the second spur gear 52 and the fourth spur gear 62.

Please also refer to FIG. 21, which is a schematic diagram of the structure of the first bracket and the first spur gear in an embodiment of this application. In this embodiment, the first support 10 is provided with a first through hole 14, and the first spur gear 50 penetrates the first through hole 14.

In the present application, a first through hole 14 may be opened on the first bracket 10, and the first spur gear 50 may penetrate through the first through hole 14, so that the first spur gear 50 is installed on the first bracket 10, and the first spur gear 50 The spur gear 50 can rotate relative to the first bracket 10. Moreover, the opening of the first through hole 14 can also enable the first sub-spur gear 51 to be rotatably connected with the first internal gear 30 after the first spur gear 50 is installed. In this way, when the first internal gear 30 moves and rotates, the first sub spur gear 51 can be synchronized to rotate, and thus the second sub spur gear 52 can be synchronized to rotate. Optionally, the first through holes 14 may be provided on opposite sides of the first bracket 10 to further improve the installation effect of the first spur gear 50.

Please also refer to FIG. 22, which is a schematic diagram of the structure of the first bracket and the second bracket in an embodiment of the application. In this embodiment, a first positioning portion 15 is provided on the first bracket 10, a second positioning portion 25 is provided on the second bracket 20, and the first positioning portion 15 is connected to the second positioning portion 25. They cooperate with each other so that the first bracket 10 is connected to the second bracket 20.

The foregoing mentions that the first bracket 10 can be connected to the second bracket 20. Therefore, in this embodiment, the first positioning portion 15 may be provided on the first bracket 10, and the second positioning portion 25 may be provided on the second bracket 20. The first positioning portion 15 and the second positioning portion 25 cooperate with each other to connect the first bracket 10 to the second bracket 20. Optionally, the first positioning portion 15 may be a bump or a groove, and the second positioning portion 25 may be a groove or a bump. Further optionally, the first positioning portion 15 includes a first sub-positioning portion 151 and a second sub-positioning portion 152 disposed oppositely, and the second positioning portion 25 includes a third sub-positioning portion 251 and a fourth sub-positioning portion 252 disposed oppositely. . As shown in FIG. 22, the first sub-positioning portion 151 may be a bump, the second sub-positioning portion 152 may be a groove, the third sub-positioning portion 251 may be a groove, and the fourth sub-positioning portion 252 may be a bump. , Thereby further improving the connection effect of the first bracket 10 and the second bracket 20. Of course, the present application is only illustrated by the embodiment shown in FIG. 22, and other embodiments can also achieve the beneficial effects of the present application.

Please also refer to FIG. 23, which is a schematic diagram of the structure of the first bracket in an embodiment of the application. In this embodiment, the first bracket 10 includes a first fixing member 17, and a first mounting member 18 arranged on opposite sides of the first fixing member 17 and extending in the same direction. 17 and the first mounting member 18 are enclosed to form the first accommodating space 11.

The first bracket 10 in this embodiment may include a first fixing member 17 and a first mounting member 18. The first fixing member 17 is used to fixedly connect the first mounting member 18, and the first mounting member 18 is used to install the first internal gear 30 and the first spur gear 50, and the first mounting member 18 is also used to connect the first internal gear 30 and the first spur gear 50. A bracket 10 is connected to the second bracket 20. In this embodiment, only the first bracket 10 is used for illustration, and the second bracket 20 can also be understood in the same way. For example, the second bracket 20 includes a second fixing member 27, and a second mounting member 28 arranged on opposite sides of the second fixing member 27 and extending in the same direction. The second fixing member 27 and the second fixing member 27 The mounting member 28 surrounds and forms the second accommodating space 21.

Please refer to FIG. 23 again. In this embodiment, the first support 10 is provided with a first avoiding groove 16, and the second support 20 is provided with a second avoiding groove 26.

When the synchronization mechanism 1 provided in the present application is applied to a flexible electronic device 4, and the bending method of the flexible screen 5 is inward folding, the flexible screen 5 will approach and connect to the synchronization mechanism 1 at this time. However, during the bending process of the flexible screen 5, the bending part will have a certain displacement towards the direction of the synchronization mechanism 1. Therefore, in the present application, the first avoiding slot 16 can be opened on the first support 10 and the second avoiding slot 26 can be opened on the second support 20. In this way, when the flexible screen 5 is bent, the first avoiding groove 16 and the second avoiding groove 26 can accommodate part of the flexible screen 5 that is displaced toward the synchronization mechanism 1, thereby preventing the flexible screen 5 from colliding with the first bracket 10 during bending. Together with the second bracket 20, the flexible screen 5 is effectively protected. Optionally, as shown in FIG. 23, the first avoiding groove 16 may be opened on the side surface of the first mounting member 18 close to the first fixing member 17, and the second avoiding groove 26 may be opened on the second mounting member 28 close to the second fixing member. One side surface of piece 27. Optionally, when the synchronization mechanism 1 is used in other fields, the first avoiding slot 16 and the second avoiding tank 26 can also be used to accommodate other components.

Please refer to FIG. 1 again. In this embodiment, the orthographic projection of the first bracket 10 on the second bracket 20 coincides with the second bracket 20. The present application can also make the orthographic projection of the first bracket 10 on the second bracket 20 coincide with the second bracket 20. It can also be understood that the first bracket 10 and the second bracket 20 are arranged correspondingly, thereby further reducing the synchronization mechanism 1 size.

Please refer to FIG. 1 again. In this embodiment, the first avoiding groove 16 is connected to the second avoiding groove 26. In the present application, the first avoiding groove 16 can be connected to the second avoiding groove 26, so that more flexible screens 5 can be accommodated, and the collision between the flexible screen 5 and the synchronization mechanism 1 can be further avoided.

The above content introduces the respective structures of the first bracket 10, the first internal gear 30, and the first spur gear 50, and their combined structure. The same understanding can be made for the second bracket 20, the second internal gear 40, and the second spur gear 60. Optionally, the second bracket 20 and the first bracket 10 are arranged mirror-symmetrically, and the second The internal gear 40 and the first internal gear 30 are arranged in mirror symmetry, and the second spur gear 60 and the first spur gear 50 are arranged in mirror symmetry. It can also be understood that the structures of the first support 10 and the second support 20 can be arranged mirror-symmetrically, that is, the structures of the first support 10 and the second support 20 can be completely the same. However, in order to facilitate the distinction, they are named the first bracket 10 and the second bracket 20 respectively. The first internal gear 30 and the second internal gear 40, and the first spur gear 50 and the second spur gear 60 can also be understood in the same way. For example, the central angle of the arc formed by the second internal gear 40 is less than or equal to 180°, that is, the shape of the second internal gear 40 is not a complete circle, but only a semicircle or an arc less than a semicircle.

The second internal gear 40 is provided with a first sliding portion 32, the second bracket 20 is provided with a second sliding portion 12, and the first sliding portion 32 and the second sliding portion 12 cooperate with each other to make The second internal gear 40 rotates in the second accommodating space 21.

The synchronization mechanism 1 further includes a rotating member 13 arranged in the second accommodating space 21 and connected to the second bracket 20, and the second internal gear 40 is sleeved on the rotating member 13 so that the second The internal gear 40 rotates in the second accommodating space 21.

A first through hole 14 is opened on opposite sides of the second bracket 20, the second spur gear 60 penetrates the first through hole 14, and the first through hole 14 is used for mounting the second straight gear. Gear 60.

The second bracket 20 includes a first fixing member 17, and a first mounting member 18 arranged on opposite sides of the first fixing member 17 and extending in the same direction. The first fixing member 17 and the second fixing member 17 A mounting member 18 surrounds and forms the second receiving space 21.

In addition to the structure of the synchronization mechanism described above, the embodiment of the present application also provides a shaft kit. Both the synchronization mechanism and the rotating shaft kit provided in the present application can achieve the advantages of the present application. As an option, the synchronization mechanism provided above can be used to form the following shaft kit.

Please refer to FIG. 24, which is a schematic diagram of the structure of the shaft kit in an embodiment of this application. This embodiment provides a rotating shaft kit 2 which includes a protective shell 3 and a synchronization mechanism 1 as provided in the above-mentioned embodiments of the present application, and the synchronization mechanism 1 is installed on the protective shell 3.

The protective shell 3 provided by the present application can be used to install the synchronization mechanism 1 first, and protect the synchronization mechanism 1 from being directly impacted by external forces. Secondly, the protective shell 3 can also fill the gaps of the electronic device 4, support the flexible screen 5, and give the flexible screen 5 a certain degree of rigid support. The shaft assembly 2 provided by the present application adopts the synchronization mechanism 1 provided in the above-mentioned embodiment of the present application, which can reduce the amount of accumulated idle stroke, thereby improving the synchronization effect of the shaft assembly 2.

In addition to the structure of the rotating shaft kit described above, the embodiment of the present application also provides an electronic device. Both the electronic equipment and the rotating shaft kit provided in this application can achieve the advantages of this application. As an option, the shaft kit provided above can be used to form the electronic device below.

Please refer to FIGS. 25-30 together. FIG. 25 is a schematic structural diagram of an electronic device in an embodiment of this application. FIG. 26 is a schematic diagram of the structure of an electronic device in another embodiment of this application. FIG. 27 is a schematic diagram of the structure of the electronic device after the flexible screen is removed in an embodiment of the application. FIG. 28 is a schematic cross-sectional view of the electronic device in an unfolded state in an embodiment of the application. FIG. 29 is a schematic cross-sectional view when the electronic device is bent at 45° in an embodiment of the application. FIG. 30 is a schematic cross-sectional view when the electronic device is bent at 90° in an embodiment of the application. The present application provides an electronic device 4, the electronic device 4 includes a housing 6, a flexible screen 5, and a shaft kit 2 as provided in the above-mentioned embodiments of the application, and the flexible screen 5 is installed on the housing 6. Above, the housing 6 includes a first sub-housing 7 and a second sub-housing 8 which are arranged opposite to each other. The first sub-housing 7 is connected to the first internal gear 30 in the rotating shaft set 2. The two sub-housings 8 are connected to the second internal gear 40 in the rotating shaft assembly 2.

The electronic equipment 4 provided by this application includes, but is not limited to, mobile phones, tablet computers, notebook computers, handheld computers, personal computers (PCs), personal digital assistants (PDAs), and portable media players (Portable Media Players). , PMP), navigation devices, wearable devices, smart bracelets, pedometers and other mobile terminals, as well as fixed terminals such as digital TVs and desktop computers.

In one embodiment, the flexible screen 5 in the electronic device 4 provided in the present application may be arranged on a side away from the shaft assembly 2, as shown in FIG. 25, at this time, the flexible screen 5 can be folded outward. In another embodiment, the flexible screen 5 can be arranged on the side close to the shaft assembly 2, and the flexible screen 5 is connected to the shaft assembly 2, as shown in FIG. 26. At this time, the flexible screen 5 can be folded inward, and When the flexible screen 5 is arranged on the side close to the rotating shaft assembly 2, the rotating shaft assembly 2 has been shielded, so the structure of the rotating shaft assembly 2 and the synchronization mechanism 1 is not shown in FIG. 26.

The housing 6 provided in the present application is used to carry the flexible screen 5, and the housing 6 is also used to connect the first internal gear 30 and the second internal gear 40 in the rotating shaft kit 2, that is, as shown in FIG. A sub-housing 7 is connected to the first internal gear 30 in the rotating shaft assembly 2, and the second sub-housing 8 is connected to the second internal gear 40 in the rotating shaft assembly 2. In this way, when the first sub-housing 7 starts to rotate, the first internal gear 30 can be driven to rotate together, thereby causing the second internal gear 40 to rotate synchronously, and finally driving the second sub-housing 8 to rotate together. As shown in FIG. 28, when the electronic device 4 is in the unfolded state, the first sub-housing 7 and the second sub-housing 8 are in the same horizontal state. As shown in Fig. 29, when the electronic device 4 is bent at 45°, the first sub-housing 7 and the second sub-housing 8 can rotate synchronously and be bent to 45° together. As shown in FIG. 30, when the electronic device 4 is bent 90°, the first sub-housing 7 and the second sub-housing 8 can also be rotated synchronously, and be bent to 90° together.

The electronic device 4 provided in the present application can realize the synchronous rotation of the first sub-housing 7 and the second sub-housing 8 so that the flexible screen 5 can rotate synchronously; and the present application can reduce the electronic device 4 by using only three gear pairs. The amount of idle travel accumulated during bending improves the synchronization effect of the electronic device 4 during bending.

Please refer to FIG. 27 again. In this embodiment, the electronic device 4 further includes a first connecting member 70 and a second connecting member 80. One end of the first connecting member 70 is connected to the first internal gear 30. The other end of the first connecting member 70 is connected to the first sub-housing 7; one end of the second connecting member 80 is connected to the second internal gear 40, and the other end of the second connecting member 80 is connected to the first sub-housing 7; Two sub-shell 8.

In this application, the first connecting piece 70 and the second connecting piece 80 can be added, and one end of the first connecting piece 70 is connected to the first internal gear 30, and the other end of the first connecting piece 70 is connected to the first sub-housing 7, thereby The connection between the first internal gear 30 and the first sub-housing 7 is realized, and the connection performance between the first internal gear 30 and the first sub-housing 7 is improved. It is also possible to connect one end of the second connecting member 80 to the second internal gear 40, and the other end of the second connecting member 80 to connect to the second sub-housing 8, so as to realize the connection between the second internal gear 40 and the second sub-housing 8. , To improve the connection performance between the second internal gear 40 and the second sub-housing 8.

Please refer to FIG. 27 again. In this embodiment, the first internal gear 30 and the first sub-housing 7 are respectively provided with first grooves 71, and the first connecting member 70 is provided on the first In the groove 71; the second internal gear 40 and the second sub-housing 8 are respectively provided with a second groove 81, and the second connecting member 80 is provided in the second groove 81.

In the present application, the first internal gear 30 and the first sub-housing 7 may be respectively provided with a first groove 71, so that the first connecting member 70 is arranged in the first groove 71, thereby reducing the electronic device 4 The thickness of the whole machine. Optionally, the end surface of the first connecting member 70 away from the housing 6 is flush with the surface of the first internal gear 30 and the first sub-housing 7 where the first groove 71 is opened, thereby improving the flatness of the electronic device 4. In the present application, the second internal gear 40 and the second sub-housing 8 may also be provided with second grooves 81 respectively, so that the second connecting member 80 is arranged in the second groove 81, thereby reducing the electronic device 4 The thickness of the whole machine. Optionally, the end surface of the second connecting member 80 away from the housing 6 is flush with the surface of the second internal gear 40 and the second sub-housing 8 where the second groove 81 is opened, thereby improving the flatness of the electronic device 4.

The above provides a detailed introduction to the content provided by the implementation of the application. This article explains and explains the principles and implementations of the application. The above description is only used to help understand the methods and core ideas of the application; at the same time, for the field General technical personnel, based on the idea of this application, will have changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

A synchronization mechanism, characterized in that, the synchronization mechanism includes:

A first bracket and a second bracket that are connected, the first bracket is provided with a first accommodating space, and the second bracket is provided with a second accommodating space;

A first internal gear and a second internal gear, the first internal gear is disposed in the first accommodating space and is rotatable relative to the first bracket, and the second internal gear is disposed in the second accommodating space Inside and rotatable relative to the second bracket; a first accommodating space is provided in the first internal gear, and a second accommodating space is provided in the second internal gear;

A first spur gear and a second spur gear, the first spur gear includes a first sub-spur gear arranged in the first accommodating space and a second sub-spur gear arranged outside the first accommodating space , The first spur gear is rotatably connected to the first internal gear; the second spur gear includes a third spur gear arranged in the second accommodating space and a third spur gear arranged in the second accommodating space The outer fourth sub spur gear, the third sub spur gear is rotatably connected to the second internal gear, and the fourth sub spur gear is rotatably connected to the second sub spur gear; when the first internal gear rotates , The first internal gear, the second internal gear, the first spur gear, and the second spur gear cooperate with each other to make the second internal gear rotate synchronously with the first internal gear.
The synchronization mechanism according to claim 1, wherein the central angle of the arc formed by the first internal gear is less than or equal to 180°.
The synchronization mechanism of claim 1, wherein a first sliding portion is provided on the first internal gear, a second sliding portion is provided on the first bracket, and the first sliding portion is connected to the The second sliding parts cooperate with each other to make the first internal gear rotate in the first accommodating space.
The synchronization mechanism according to claim 3, wherein the sliding track of the first sliding part and the second sliding part is consistent with the rotation direction of the first internal gear.
The synchronization mechanism according to claim 1, wherein the synchronization mechanism further comprises a rotating member arranged in the first accommodating space and connected to the first bracket, and the first internal gear is sleeved with the The rotating member makes the first internal gear rotate in the first accommodating space.
8. The synchronization mechanism according to claim 1, wherein the diameter of the second spur gear is larger than that of the first spur gear; and the diameter of the fourth spur gear is larger than that of the third spur gear.
The synchronization mechanism according to claim 1, wherein a first through hole is opened in the first bracket, and the first spur gear penetrates the first through hole.
The synchronization mechanism of claim 1, wherein a first positioning portion is provided on the first bracket, a second positioning portion is provided on the second bracket, and the first positioning portion is connected to the first positioning portion. The two positioning parts cooperate with each other to connect the first bracket to the second bracket.
8. The synchronization mechanism according to claim 8, wherein the orthographic projection of the first bracket on the second bracket coincides with the second bracket.
9. The synchronization mechanism according to claim 9, wherein the first bracket is provided with a first avoiding groove, and the second bracket is provided with a second avoiding groove.
The synchronization mechanism according to claim 10, wherein the first avoiding groove is connected to the second avoiding groove.
The synchronization mechanism according to claim 1, wherein the orthographic projection of the first bracket on the second bracket coincides with the second bracket.
The synchronization mechanism according to claim 10, wherein the first bracket comprises a first fixing member, and first mounting members arranged on opposite sides of the first fixing member and extending in the same direction, so The first fixing part and the first mounting part are enclosed to form the first accommodating space.
The synchronization mechanism according to claim 13, wherein the second bracket comprises a second fixing member, and second mounting members arranged on opposite sides of the second fixing member and extending in the same direction, so The second fixing part and the second mounting part are enclosed to form the second accommodating space.
The synchronization mechanism according to claim 14, wherein the first avoiding groove can be opened on a side surface of the first mounting member close to the first fixing member, and the second avoiding groove can be opened on The second mounting member is close to a side surface of the second fixing member.
The synchronization mechanism according to any one of claims 1-15, wherein the second bracket and the first bracket are arranged mirror-symmetrically, and the second internal gear and the first internal gear are mirror-symmetrically arranged , The second spur gear and the first spur gear are arranged in mirror symmetry.
A rotating shaft kit, characterized in that the rotating shaft kit comprises a protective shell and the synchronization mechanism according to any one of claims 1-16, and the synchronization mechanism is installed on the protective shell.
An electronic device, characterized in that the electronic device comprises a housing, a flexible screen, and the hinge kit according to claim 17, the flexible screen is installed on the housing, and the housing includes opposite The first sub-housing is connected to the first internal gear in the rotating shaft kit, and the second sub-housing is connected to the second internal gear in the rotating shaft kit. gear.
The electronic device of claim 18, wherein the electronic device further comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is connected to the first internal gear, and the first The other end of the connecting piece is connected to the first sub-housing; one end of the second connecting piece is connected to the second internal gear, and the other end of the second connecting piece is connected to the second sub-housing.
The electronic device of claim 19, wherein the first internal gear and the first sub-housing are respectively provided with a first groove, and the first connecting member is provided in the first groove. In the groove; the second internal gear and the second sub-housing are respectively provided with a second groove, and the second connecting member is arranged in the second groove.