WO2021036677A1

WO2021036677A1 - Rotating shaft mechanism and electronic device

Info

Publication number: WO2021036677A1
Application number: PCT/CN2020/105851
Authority: WO
Inventors: 马春军; 刘勇; 李中; 刘雨; 范文; 彭乐雄
Original assignee: 华为技术有限公司
Priority date: 2019-08-29
Filing date: 2020-07-30
Publication date: 2021-03-04
Also published as: CN110515426A

Abstract

Provided in the present application are a rotating shaft mechanism and an electronic device. The rotating shaft mechanism comprises a spindle assembly and a support assembly, wherein the support assembly comprises a first support and a second support which may both rotate relative to the spindle assembly. The support assembly further comprises a damping block, a first arc-shaped arm and a second arc-shaped arm. The first arc-shaped arm and the second arc-shaped arm are stacked relative to the spindle assembly, the damping block is disposed adjacent to the first arc-shaped arm and the second arc-shaped arm, and surfaces adjacent to the first arc-shaped arm, the second arc-shaped arm and the damping block are provided with matching convex and concave surfaces. The arc-shaped arms cooperate with the damping block to provide the first support and the second support with torque. In a specific setting, due to the arc-shaped arm structure, the spindle assembly may be made very thin. When the damping block abuts against the first arc-shaped arm and the second arc-shaped arm, the first arc-shaped arm and the second arc-shaped arm may obtain a larger torque, thereby achieving the effect of using a thinner mechanism to provide a larger torque. The folding effect of the electronic device is improved.

Description

Rotating shaft mechanism and electronic equipment

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on August 29, 2019, the application number is 201910806689.X, and the application name is "a kind of rotating shaft mechanism and electronic equipment", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the technical field of electronic equipment, and in particular to a rotating shaft mechanism and electronic equipment.

Background technique

With the development of flexible screen technology, the application of flexible screens has gradually increased, but the flexible screen itself is still relatively fragile, and cannot generate a large pulling force (to avoid damage) during the bending process, and cannot be completely flat when flattened. At the same time, the flexible screen will generate huge internal tension during the bending process, which seriously affects the folding feel. Therefore, the auxiliary torque needs to be provided with the aid of the rotating shaft mechanism. The shaft mechanism of the existing electronic device uses a concave cam structure as a damping component to provide torque. As shown in FIG. 1, the damping assembly includes a concave cam structure 2 and two supporting plates 1 connected to the concave cam structure 2, and the two supporting plates 1 are respectively fixedly connected to the two housings of the electronic device in a one-to-one correspondence. During folding, the auxiliary force required for the folding of the housing is provided by the cooperation of the two concave cams 3 in the concave cam structure 2. However, in Figure 1, the rotation axis of the concave cam structure 2 coincides with the rotation axis of the product equipment, which results in the need for a larger diameter of the concave cam 3 and a larger elastic structural member 4 to obtain a larger torque. The pressure of the two concave cams 3 is provided. As a result, the entire hinge mechanism takes up a lot of space, and the foldable product cannot be made light and thin.

Summary of the invention

The application provides a rotating shaft mechanism and electronic equipment to improve the folding effect of the electronic equipment.

In a first aspect, a shaft mechanism is provided, which is applied to a foldable electronic device. The electronic device includes two shells, the two shells are respectively connected with the shaft mechanism, and the two shells are realized by the shaft mechanism. Unfolding and folding. The rotating shaft mechanism includes a spindle assembly and a support assembly. The spindle assembly serves as a support for the rotating shaft mechanism. The support assembly includes a first support and a second support. The first support is connected to the first housing of the electronic device. The two supporting parts are connected with the second housing of the electronic device; in addition, the first supporting part is connected with the main shaft assembly and can rotate relative to the main shaft assembly; the second supporting part is connected with the main shaft assembly and can rotate relative to the main shaft assembly. When the damping block is set, the damping block is arranged on the main shaft assembly, and the damping block and the arc-shaped arm are arranged adjacently along the length direction of the main shaft assembly; wherein, the arc-shaped arm includes a first arc-shaped arm and a second arc-shaped arm, and the first arc The shaped arm and the second arc shaped arm are stacked relative to the main shaft assembly. When mating, the first arc-shaped arm rotates relative to the main shaft assembly, and the second arc-shaped arm rotates relative to the main shaft assembly; the damping block includes a first end surface, the first arc-shaped arm includes a second end surface, and the second arc-shaped arm includes a third end surface ; Wherein, the first end surface is opposite to the second end surface, and the first end surface is opposite to the third end surface. The first end surface includes a first convex surface, a first concave surface, and a second concave surface; the second end surface includes a second convex surface and a third concave surface; the third end surface includes a third convex surface and a fourth concave surface; When the angle between the two shells is the first angle, the first convex surface abuts against the second convex surface, and the first convex surface abuts against the third convex surface; when the first arc-shaped arm and the second arc-shaped arm rotate relative to the main shaft assembly, so that When the included angle between the first housing and the second housing of the electronic device is the second angle, the first concave surface abuts against the third concave surface, and the second concave surface abuts against the fourth concave surface; when the first arc-shaped arm and the second The arc-shaped arm rotates relative to the main shaft assembly, so that when the included angle between the first housing and the second housing of the electronic device is a third angle, the first concave surface and the third concave surface are in clearance fit, and the second concave surface is in clearance with the fourth concave surface. In cooperation, the first angle is greater than the second angle, and the second angle is greater than the third angle. In the above technical solution, the arc arm is matched with the damping block to provide torque to the first support and the second support. In the specific installation, the main shaft assembly can be made very thin due to the arc arm structure. , And when the damping block abuts on the first arc arm and the second arc arm, the first arc arm and the second arc arm can obtain a larger torque, which realizes the use of a thinner mechanism to provide a larger torque Effect. Improve the folding effect of electronic equipment.

In a specific implementation, the main shaft assembly includes a guiding inner shaft and a guiding outer shaft arranged in layers, and the arc-shaped sliding groove is located between the guiding inner shaft and the guiding outer shaft. The arc-shaped sliding groove is formed through the cooperation of the guiding inner shaft and the guiding outer shaft, which facilitates the assembly of the first support member and the second support member.

In a specific implementation, the two opposite surfaces of the inner guide shaft and the outer guide shaft are coaxial arc-shaped surfaces, and the two opposite arc-shaped surfaces enclose the arc-shaped chute . A chute is enclosed by an arc surface.

In a specific implementation, the first arc-shaped arm is provided on the first support, and the second arc-shaped arm is provided on the second support. Or, the first support includes the first arc-shaped arm, and the second support includes the second arc-shaped arm. The first arc-shaped arm and the second arc-shaped arm are arranged in different ways.

In a specific implementation, the first arc-shaped arm is sleeved on the main shaft assembly, and the second arc-shaped arm is sleeved on the main shaft assembly. Specifically, it is sleeved in the arc-shaped chute, and by arranging the first arc-shaped arm and the second arc-shaped arm in the main shaft assembly, the stability of the rotation of the first arc-shaped arm and the second arc-shaped arm relative to the main shaft assembly is improved.

In a specific implementation, the spindle assembly is provided with a first limiting chute, the first support is connected to the first limiting chute of the spindle assembly, and the first support is opposite to the first limiting chute. The rotation of the first limit chute;

The spindle assembly is provided with a second limiting chute, the second support member is connected to the second limiting chute of the spindle assembly, and the second support member rotates relative to the second limiting chute. The rotation distance of the support assembly is limited by the limit chute to prevent the support assembly from being separated from the main shaft assembly.

In a specific implementation, the damping block slides along the length of the main shaft assembly. Through the sliding fit of the damping block and the main shaft assembly, the damping block can abut on the arc-shaped arm.

In a specific implementation, the spindle assembly is provided with a limiting block, the damping block is provided with a hollow structure that cooperates with the limiting block, and the limiting block is used to limit the damping block along the The length of the sliding distance of the spindle assembly. The sliding distance of the damping block is limited by the limit block, so as to avoid the damping block from excessively squeezing the first arc-shaped arm and the second arc-shaped arm.

In a specific implementation, the rotating shaft mechanism further includes an elastic member; the elastic member and the damping block are arranged in sequence along the length of the main shaft assembly; when the first housing of the electronic device and the When the included angle between the second housing is the first angle, the elastic deformation amount of the elastic member is the first deformation amount; when the distance between the first housing and the second housing of the electronic device is When the included angle is the second angle, the elastic deformation amount of the elastic member is the second deformation amount; when the included angle between the first housing and the second housing of the electronic device is the third angle, The elastic deformation amount of the elastic member is a third deformation amount, the first deformation amount is greater than the second deformation amount, and the second deformation amount is greater than the third deformation amount. The sliding force of the damping block is provided by the elastic member.

In a specific implementation, the thickness of the first arc-shaped arm is 1 to 2 times the thickness of the second arc-shaped arm. As a result, the first arc-shaped arm and the second arc-shaped arm obtain approximately the same torque.

In a second aspect, a shaft mechanism is provided, which is applied to a foldable electronic device. The shaft mechanism includes: a main shaft assembly, a support assembly, a damping block, and an elastic member; wherein, the main shaft assembly includes a laminated guide inner shaft and a guide The outer shaft, the guiding inner shaft and the guiding outer shaft are provided with an arc-shaped sliding groove, and the axis of the arc-shaped sliding groove is parallel to the length direction of the main shaft assembly. The support assembly includes a first support and a second support, wherein the first support is connected to the first housing of the electronic device, and the second support is connected to the second housing of the electronic device. The arc-shaped arm in this application includes a first arc-shaped arm, a second arc-shaped arm, a third arc-shaped arm, and a fourth arc-shaped arm. Among them, the first arc-shaped arm and the third arc-shaped arm are connected with the first support, the first arc-shaped arm and the third arc-shaped arm are located in the arc-shaped chute and can rotate around the axis of the arc-shaped chute; The two arc-shaped arms and the fourth arc-shaped arm are connected with the second support, the second arc-shaped arm and the fourth arc-shaped arm are located in the arc-shaped chute and can rotate around the axis of the arc-shaped chute; the first arc The arm and the second arc-shaped arm are stacked and arranged in the arc-shaped chute; the damping block is slidably assembled in the arc-shaped chute and can slide along the length of the axis. The damping block is stacked with the first arc-shaped arm and the second arc. The arms are arranged adjacently along the length direction of the main shaft assembly; the elastic piece and the damping block are arranged adjacently along the length direction of the main shaft assembly, and the elastic piece abuts against the damping block. Wherein, the damping block includes a first end surface, the first arc-shaped arm includes a second end surface, the second arc-shaped arm includes a third end surface, the first end surface and the second end surface are disposed oppositely, and the first end surface and the third end surface are disposed oppositely; One end surface includes a first convex surface, a first concave surface, and a second concave surface; the second end surface includes a second convex surface and a third concave surface; the third end surface includes a third convex surface and a fourth concave surface; When the included angle between the shells is the first angle, the first convex surface abuts against the second convex surface, and the first convex surface abuts against the third convex surface; the elastic variable of the elastic member is the first variable; when the first arc-shaped arm and the second convex surface The two arc-shaped arms rotate relative to the main shaft assembly so that when the included angle between the first housing and the second housing of the electronic device is the second angle, the first concave surface abuts against the third concave surface, and the second concave surface abuts against the fourth concave surface The elastic deformation of the elastic member is the second deformation; when the first arc-shaped arm and the second arc-shaped arm rotate relative to the main shaft assembly, the angle between the first housing and the second housing of the electronic device is the first At three angles, the first concave surface is in clearance fit with the third concave surface, and the second concave surface is in clearance fit with the fourth concave surface; the elastic deformation of the elastic member is the third deformation; wherein the first deformation is greater than the second deformation, and the second The amount of deformation is greater than the third amount; the first angle is greater than the second angle, and the second angle is greater than the third angle. In the above technical solution, the arc arm is matched with the damping block to provide torque to the first support and the second support. In the specific installation, the main shaft assembly can be made very thin due to the arc arm structure. , And when the damping block abuts on the first arc arm and the second arc arm, the first arc arm and the second arc arm can obtain a larger torque, which realizes the use of a thinner mechanism to provide a larger torque Effect. Improve the folding effect of electronic equipment.

In a third aspect, an electronic device is provided, the electronic device includes the shaft mechanism of any one of the above, and two housings; wherein, a first housing, a second housing, and the first housing and the The first supporting member of the rotating shaft mechanism is connected, and the second housing is connected with the second supporting member of the rotating shaft mechanism. In the above technical solution, the arc sliding groove is arranged in the main shaft assembly, so that the axis of the arc sliding groove is located outside the main shaft assembly, and when the damping assembly is set, the first arc arm and the second arc arm are along the arc The first arc-shaped arm and the second arc-shaped arm rotate around the axis of the arc-shaped sliding groove. When the damping block abuts against the first arc-shaped arm and the second arc-shaped arm, the first arc The shaped arm and the second arc-shaped arm can obtain a larger torque, which realizes the effect of using a thinner mechanism to provide a larger torque. Improve the folding effect of electronic equipment.

Description of the drawings

Fig. 1 is a schematic diagram of the structure of a shaft mechanism in the prior art;

Fig. 2a is an expanded schematic diagram of an electronic device provided by an embodiment of the application;

FIG. 2b is a schematic diagram of a folded state of an electronic device provided by an embodiment of the application;

Fig. 3 is an exploded schematic diagram of a shaft mechanism provided by an embodiment of the application;

FIG. 4 is an exploded schematic diagram of the main shaft assembly provided by an embodiment of the application;

Fig. 5 is a schematic structural diagram of a guiding outer shaft provided by an embodiment of the application;

6 is a schematic cross-sectional view of the spindle assembly provided by an embodiment of the application in a direction perpendicular to its length;

Fig. 7 is a schematic structural diagram of a first support provided by an embodiment of the application;

Fig. 8 is a schematic structural diagram of a second support provided by an embodiment of the application;

9 is a schematic diagram of the cooperation of the third arc-shaped arm and the fourth arc-shaped arm with the arc-shaped sliding groove provided by the embodiment of the application;

FIG. 10 is a schematic diagram of the cooperation of the third arc-shaped arm and the fourth arc-shaped arm with the inner guide shaft according to an embodiment of the application;

11 is a schematic diagram of the cooperation between the damping block and the guiding outer shaft provided by the embodiment of the application;

12 is a schematic diagram of the cooperation between the damping block and the inner guide shaft provided by the embodiment of the application;

13 is a schematic diagram of the cooperation of the first arc-shaped arm and the second arc-shaped arm with the arc-shaped sliding groove provided by the embodiment of the application;

FIG. 14 is a schematic structural diagram of a first arc-shaped arm provided by an embodiment of the application;

FIG. 15 is a schematic structural diagram of a damping block provided by an embodiment of the application;

FIG. 16 is a schematic structural diagram of a second arc-shaped arm provided by an embodiment of the application;

FIG. 17 is a schematic diagram of cooperation between a damping block and a limit block provided by an embodiment of the application;

18 is a state diagram of the first arc-shaped arm and the second arc-shaped arm when the electronic device is folded according to an embodiment of the application.

detailed description

In order to make the purpose, technical solutions, and advantages of the application more clear, the application will be further described in detail below with reference to the accompanying drawings.

In order to facilitate the understanding of the hinge mechanism provided by the embodiments of the present application, the application scenarios of the hinge mechanism are first described below. The hinge mechanism is applied to electronic devices, especially electronic devices with bendable screens, such as mobile phones, PDAs, notebook computers, or tablet computers. However, no matter what kind of electronic equipment is used, it includes the structure shown in FIG. 2a: the first housing 200, the rotating shaft mechanism 100, the second housing 300, and those fixed on the first housing 200 and the second housing 300 The flexible screen 400. Continuing to refer to FIG. 2a, the rotating shaft mechanism 100 is connected to the first housing 200 and the second housing 300 respectively. The rotation of the rotating shaft mechanism 100 causes the first housing 200 and the second housing 300 to rotate relatively, and the flexible screen 400 covers The first housing 200, the second housing 300, and the rotating shaft mechanism 100 are respectively bonded to the first housing 200 and the second housing 300. When in use, the electronic device includes two states: an expanded state and a folded state. As shown in FIG. 2a, when the electronic device is unfolded, the first housing 200 and the second housing 300 are arranged separately on both sides of the rotating shaft mechanism 100, and the flexible screen 400 is unfolded at this time. When bending, the first housing 200 and the second housing 300 rotate relative to the shaft mechanism 100, and after being folded, the state shown in FIG. 2b is formed. The first housing 200 and the second housing 300 are relatively stacked, and The flexible screen (not shown in the figure) is bent following the first housing 200 and the second housing 300. Figure 2b shows the folding method in which the flexible screen is located inside the electronic device. However, the electronic device provided by the embodiment of the present application is not limited to the folding method shown in Figure 2b, and can also be folded in a manner that the flexible screen is exposed after folding. In order to facilitate the understanding of the shaft mechanism provided by the embodiment of the present application, its structure will be described in detail below with reference to the accompanying drawings.

Referring first to FIG. 3, FIG. 3 shows an exploded schematic diagram of the shaft mechanism provided by an embodiment of the present application. The rotating shaft mechanism provided in the embodiment of the present application includes a spindle assembly and a support assembly; wherein the support assembly includes a first support 20 connected to the first housing, and a second support 30 connected to the second housing. When a shell is connected to the first support member 20, it can be directly connected or indirectly connected through other structural members; similarly, when the second shell is connected to the second support member 30, a direct connection method can be used. It can also be connected indirectly through other structural members. In the specific arrangement, the first support 20 and the second support 30 are separately arranged on both sides of the main shaft assembly, the first support 20 can rotate relative to the main shaft assembly, and the second support 30 can rotate relative to the main shaft assembly. When the electronic device is unfolded or folded, the first housing drives the first support 20 to rotate relative to the spindle assembly, and the second housing drives the second support 30 to rotate relative to the spindle assembly, and passes through the first support 20 and the second support. 30 supports the stability of the first shell and the second shell. In the embodiments of the present application, the number of support components is not limited. Two, three, or other different number of support components can be used to rotatably connect with the main shaft assembly. It only needs to be able to ensure that the first housing and the second housing can be Stable rotation is sufficient. The following takes a support assembly as an example to illustrate the matching relationship between the support assembly and the spindle assembly.

Refer to FIGS. 4 and 5 together, wherein FIG. 4 shows an exploded schematic diagram of the main shaft assembly, and FIG. 5 shows a schematic structural diagram of the guiding outer shaft. The main shaft assembly provided by the embodiment of the present application may include a guiding inner shaft 50 and a guiding outer shaft 10. The guiding inner shaft 50 and the guiding outer shaft 10 may be two structural members with the same length direction. The guiding inner shaft 50 and the guiding outer shaft 10 are also It may be two structural members with different length directions, which is only a specific example in the embodiment of the present application. In the embodiment of the present application, the length direction of the main shaft assembly is the length direction of the guiding inner shaft 50 and/or the guiding outer shaft 10. 4 and 5, the inner guide shaft 50 and the outer guide shaft 10 are stacked and arranged, and the inner guide shaft 50 and the outer guide shaft 10 have two opposite surfaces. For the convenience of description, the side of the inner guiding shaft 50 facing the outer guiding shaft 10 is named the first surface 51, and the side of the guiding outer shaft 10 facing the inner guiding shaft 50 is named the second surface 11. The first surface 51 and the second surface 11 are coaxial arc-shaped surfaces. 4, the first surface 51 is provided with a boss 52. When the guide inner shaft 50 and the guide outer shaft 10 are stacked, the guide outer shaft 10 abuts on the boss 52 and is connected by a threaded member (bolt or screw) It is fixedly connected with the inner guide shaft 50. As shown in Fig. 6, Fig. 6 is a schematic cross-sectional view of the spindle assembly in a direction perpendicular to its length. When the guiding inner shaft 50 and the guiding outer shaft 10 are connected to form a main shaft assembly, there is a gap between the first surface 51 and the second surface 11, and the gap is an arc-shaped sliding groove 60. The axis of the arc-shaped sliding groove 60 is connected to the main shaft. The length directions of the components are parallel. Continuing to refer to FIG. 6, the first surface 51 and the second surface 11 are coaxial arc-shaped surfaces, where the axis is the axis of the cylindrical surface where the two arc-shaped surfaces are located, as shown in FIG. 6, the two dashed lines in the figure Respectively represent the cylindrical surface where the first surface 51 and the second surface 11 are located. The axis of the cylindrical surface indicated by the O point. Since Figure 6 is a cross-sectional view, the cylindrical surface is only shown as a circle in Figure 6 and the axis is only Shown as a dot.

The first support 20 may be connected with the main shaft assembly. Also refer to FIG. 7, which shows a schematic structural view of the first support member. The first support member 20 includes a first support plate 21 and a third arc-shaped arm 22. The third arc-shaped arm 22 can be connected to the first support plate. 21 Fixed connection. A third arc-shaped arm 22 is shown in FIG. 7, but the number of arc-shaped arms provided in the embodiment of the present application can be a different number, such as two, three, four, etc., at least two or The two or more third arc-shaped arms 22 can be set according to actual needs during specific installation. However, no matter how many third arc-shaped arms 22 are used, the arrangement direction of the third arc-shaped arms 22 is arranged along the length of the guiding inner shaft. Refer also to FIG. 9, which shows a schematic diagram of the cooperation between the third arc-shaped arm and the arc-shaped sliding groove. When the first support 20 is connected to the main shaft assembly, the third arc-shaped arm 22 is inserted into the arc-shaped sliding groove 60 and can rotate around the axis of the arc-shaped sliding groove 60, as shown in FIG. As shown by the arrow, the third arc-shaped arm 33 can rotate around the axis of the arc-shaped chute 60. When the third arc-shaped arm 22 rotates around the axis of the arc-shaped chute 60, the third arc-shaped arm 22 is slid in the arc. Sliding in the groove 60, while the first support 20 rotates relative to the spindle assembly. Continuing to refer to FIG. 6, when the third arc-shaped arm 22 is specifically set, the thickness of the third arc-shaped arm 22 matches the depth of the arc-shaped sliding groove 60, so that the third arc-shaped arm can be adjusted to the third arc through the first surface 51 and the second surface 11. The arm 22 is defined to ensure that the third arc-shaped arm 22 can slide along the arc-shaped sliding groove 60. 4 and 7 together, when the first support 20 rotates relative to the spindle assembly, the first support 20 can rotate relative to the spindle assembly by an angle greater than ninety degrees, so the length of the third arc-shaped arm 22 needs to meet : When the electronic device is rotated from the unfolded state to the folded state, the third arc-shaped arm 22 is still partially located in the arc-shaped chute 60. In order to prevent the third arc-shaped arm 22 from completely sliding out of the arc-shaped chute 60, the spindle assembly is provided with a first limiting chute 53, and the first support 20 is connected to the first limiting chute 53 of the spindle assembly. A supporting member 20 rotates relative to the first limiting chute 53. As shown in Figures 4 and 7, when the third arc-shaped arm 22 is provided, the first limiting boss 221 is provided on the side of the third arc-shaped arm 22 facing the first surface 51, and the first surface 51 is provided with The first limiting chute 53 corresponding to the first limiting boss 221, when the shaft mechanism rotates to the folded state, the first limiting boss 221 abuts against the groove wall of the first limiting chute 53, preventing the third The continuous rotation of the arc-shaped arm 22 ensures that the third arc-shaped arm 22 will not completely slip out of the arc-shaped chute 60.

The second support 30 may be connected with the main shaft assembly. Refer to FIG. 8 together, which shows a schematic structural view of the second support member. The second support member 30 includes a first support plate 31 and a fourth arc-shaped arm 32. The fourth arc-shaped arm 32 can be connected to the first support plate. 31 Fixed connection. A fourth arc-shaped arm 32 is shown in FIG. 8, but the number of arc-shaped arms provided in the embodiment of the present application can be a different number, such as two, three, four, etc. The two or more fourth arc-shaped arms 32 can be set according to actual needs during specific settings. However, no matter how many fourth arc-shaped arms 32 are used, the arrangement direction of the fourth arc-shaped arms 32 is arranged along the length of the guiding inner shaft 50. When the second support 30 is connected to the main shaft assembly, the fourth arc-shaped arm 32 is inserted into the arc-shaped chute 60, and can rotate around the axis of the arc-shaped chute 60, and slides around the arc on the fourth arc-shaped arm 32. When the axis of the groove 60 rotates, the fourth arc-shaped arm 32 slides in the arc-shaped sliding groove 60, and at the same time the second support 30 rotates relative to the main shaft assembly. For the specific assembly situation, please refer to the third arc-shaped arm 22 and the arc sliding The fit of the groove 60. When the fourth arc-shaped arm 32 is specifically set, the thickness of the fourth arc-shaped arm 32 matches the height of the arc-shaped sliding groove 60, so that the fourth arc-shaped arm 32 is defined by the first surface 51 and the second surface 11 to ensure The fourth arc-shaped arm 32 can slide along the arc-shaped sliding groove 60. 8 and 9 together, when the second support 30 rotates relative to the spindle assembly, the second support 30 can rotate relative to the spindle assembly by an angle greater than ninety degrees, so the length of the fourth arc arm 32 is set It needs to be met: when the electronic device is rotated from the unfolded state to the folded state, the fourth arc-shaped arm 32 is still partially located in the arc-shaped chute 60. In order to prevent the fourth arc-shaped arm 32 from completely sliding out of the arc-shaped chute 60, the spindle assembly is provided with a second limit chute, and the second support 30 is connected to the second limit chute of the spindle assembly, and the second support The piece 30 rotates relative to the second limiting chute 53. As shown in Figures 4 and 7, when the fourth arc-shaped arm 32 is provided, a second limiting boss (not shown in the figure) is provided on the side of the fourth arc-shaped arm 32 facing the first surface 51, and at the same time, the fourth arc-shaped arm 32 is provided with a second limiting boss (not shown in the figure). A surface 51 is provided with a second limiting chute (not shown in the figure) corresponding to the second limiting boss. When the electronic device is rotated to the folded state, the second limiting boss and the second limiting chute The groove wall abuts against the fourth arc-shaped arm 32 to prevent the fourth arc-shaped arm 32 from continuing to rotate, ensuring that the fourth arc-shaped arm 32 will not completely slip out of the arc-shaped chute 60.

Refer also to FIG. 10, which shows a schematic diagram of the cooperation of the third arc-shaped arm and the fourth arc-shaped arm with the inner guide shaft. During assembly, the first support plate 21 and the second support plate 31 are arranged on both sides of the guide outer shaft 10, and the third arc-shaped arm 22 and the fourth arc-shaped arm 32 are attached to the first surface of the guide inner shaft 50 51 on. Continuing to refer to FIG. 10, the third arc-shaped arm 22 and the fourth arc-shaped arm 32 are arranged along the length direction of the main shaft assembly, and the above-mentioned boss 52 is spaced between the third arc-shaped arm 22 and the fourth arc-shaped arm 32. The boss 52 can limit the movement of the third arc-shaped arm 22 along the length of the main shaft assembly to ensure the stability of the movement of the first support 20. In FIG. 10, only the assembly of a third arc-shaped arm 22 and a fourth arc-shaped arm 32 is shown. When the third arc-shaped arm 22 and the fourth arc-shaped arm 32 are both multiple, there are multiple The three arc-shaped arms 22 and the multiple fourth arc-shaped arms 32 are arranged along the length direction of the main shaft assembly. The third arc-shaped arms 22 and the fourth arc-shaped arms 32 can be arranged alternately, such as the third arc-shaped arms 22 and the fourth arc-shaped arms 22. The arc-shaped arm 32, the third arc-shaped arm 22, the fourth arc-shaped arm 32...; or the third arc-shaped arm 22, the fourth arc-shaped arm 32, the fourth arc-shaped arm 32, and the third arc-shaped arm The arrangement manner of 22..., the specific arrangement manner is not limited in the embodiment of the present application. After the third arc-shaped arm 22 and the fourth arc-shaped arm 32 are assembled, the outer guide shaft 10 and the inner guide shaft 50 are fixedly connected, so that the third arc-shaped arm 22 and the fourth arc-shaped arm 32 are located on the inner guide shaft. 50 and the guide outer shaft 10 in the arc-shaped chute.

Referring to FIGS. 3 and 10 together, the rotating shaft mechanism provided by the embodiment of the present application further includes a damping assembly 40 that includes a damping block 43, an elastic member 44, and a first arc-shaped arm 42 and a second arc-shaped arm 41. Referring to FIG. 7 together, the first arc-shaped arm 42 is fixedly connected to the first support plate 21, or the first arc-shaped arm 42 and the first support plate 21 are an integral structure, and the first arc-shaped arm 42 and the third arc The shaped arms 22 are arranged along the length of the spindle assembly. Referring to FIG. 8 together, the second arc-shaped arm 41 is fixedly connected to the second support plate 31, or the second arc-shaped arm 41 and the second support plate 31 are an integral structure, and the second arc-shaped arm 41 and the fourth arc The shaped arms 32 can be arranged along the length of the spindle assembly. When connected with the main shaft assembly, the first arc-shaped arm 42 is sleeved on the main shaft assembly, and the second arc-shaped arm 41 is sleeved on the main shaft assembly. Specifically, the first arc-shaped arm 42 and the second arc-shaped arm 41 may be opposite to the main shaft. The stacking arrangement of the components is located in the arc-shaped chute. 10 and 15, the damping block 43 is slidably assembled in the main shaft assembly. When the damping block 43 is slidably assembled with the main shaft assembly, the damping block 43 has two opposite

curved surfaces

433, 434, one of which is curved surface 433 is attached to the first surface 51 of the guide inner shaft 50, as shown in Figures 11 and 15. Figure 11 is a schematic diagram of the cooperation between the damping block and the guide outer shaft. The other arc surface 434 of the damping block 43 is attached to the guide The second surface 11 of the outer shaft 10. 10, when assembling the damping block 43, the damping block 43 and the first arc-shaped arm 42 are adjacently arranged along the length of the main shaft assembly, and the damping block 43 is also adjacent to the second arc-shaped arm 41 along the length of the main shaft assembly. The damping block 43 abuts against the first arc-shaped arm 42, the damping block 43 abuts against the second arc-shaped arm 41, and the elastic member 44 is used to push the damping block 43 to abut against the first arc-shaped arm 42 and the second arc-shaped arm. The arc-shaped arm 41 is used to provide torque for the rotation of the first support member and the second support member.

4 and 5 together, the first surface 51 of the inner guide shaft 50 is provided with a fixing post 54 with a threaded hole, while the outer guide shaft 10 is provided with a limiting block 12, which is provided with and fixed The through hole (not marked in the figure) for the post 54. When the inner guide shaft 50 and the outer guide shaft 10 are assembled, the fixed post 54 is inserted into the through hole of the limit block 12, and the guide inner shaft 50 and the guide outer shaft 10 When connecting, a bolt or a screw is passed through the guide outer shaft 10 and screwed into the fixing column 54 to fix the guide outer shaft 10 and the guide inner shaft 50. 10 and 11, the damping block 43 is sleeved on the limiting block 12. Specifically, the damping block 43 is provided with a hollow structure 431, the limiting block 12 is inserted into the hollow structure 431, and the hollow structure 431 is on the main shaft The length of the component is larger than the size of the stop block 12 in the length direction of the spindle component. At the same time, the size of the hollow structure 431 in the longitudinal direction of the spindle component matches the size of the stop block in the length direction of the spindle component, so that the limit can be passed. The block 12 limits that the damping block 43 can slide along the length of the main shaft, and the limiting block 12 can be used as a limiting structure for the damping block 43 to slide. When the damping block 43 slides in the arc-shaped chute, the damping block 43 can slide along the length of the main shaft assembly through the cooperation of the hollow structure 431 and the limit block 12, and is pressed by the side wall of the limit block 12 in the length direction of the main shaft. It is connected to the damping block 43 to limit the maximum sliding stroke of the damping block 43.

4 and 12 together, the guide inner shaft 50 is provided with a limiting protrusion 56. When the damping block 43 is assembled on the guiding inner shaft 50, a first arc is formed between the limiting protrusion 56 and the damping block 43. The gap between the arc-shaped arm and the second arc-shaped arm. When the first arc-shaped arm and the second arc-shaped arm are assembled, the first arc-shaped arm and the second arc-shaped arm are assembled between the limiting protrusion 56 and the damping block 43, and the limiting protrusion 56 defines the first The axial movement range of the arc-shaped arm and the second arc-shaped arm, and the sliding distance of the damping block 43 is limited by the limit block, so as to prevent the damping block 43 from imposing on the first arc-shaped arm and the second arc-shaped arm when the electronic device is folded The pressure causes the support members (the first support member and the second support member) to tilt or fall out.

4, 10 and 11, the inner guide shaft 50 is provided with a groove 55 that cooperates with the elastic member 44. The elastic member 44 is arranged in the groove 55, and the groove 55 defines the elastic member 44 along the main shaft assembly. Deformation in the length direction. The elastic member 44 provided in the embodiment of the present application may be a compression spring, and the number of compression springs may be two. However, the number of the elastic member 44 provided in the embodiment of the present application is not limited to two, and one, Different numbers such as three, four, etc. When the elastic element 44 is assembled on the main shaft assembly, the elastic element 44 and the damping block 43 are adjacently arranged along the length direction of the main shaft assembly, and the elastic element 44 abuts against the damping block 43. During specific assembly, the first end of the elastic element 44 can abut against the spindle assembly, and the first end of the elastic element 44 can also abut on a structural element, which can be disposed on the spindle assembly, and the second end of the elastic element 44 It can abut against the damping block 43.

10, when the damping assembly 40 is in use, the damping block 43 abuts on the first arc-shaped arm 42 and the second arc-shaped arm 41, and the damping block 43 is connected to the first arc-shaped arm 42 and the second arc-shaped arm respectively. The arm 41 has opposite surfaces. The cooperation of the damping block 43 with the first arc-shaped arm 42 and the second arc-shaped arm 41 will be described in detail below with reference to the drawings.

Also refer to FIG. 13, which shows a schematic diagram of the cooperation of the first arc-shaped arm and the second arc-shaped arm with the arc-shaped sliding groove. The first arc-shaped arm 42 and the second arc-shaped arm 41 provided in the embodiment of the present application can respectively rotate around the axis of the arc-shaped chute. When rotating, the first arc-shaped arm 42 and the second arc-shaped arm 41 can be in the arc Sliding inside the chute 60. When the first arc-shaped arm 42 and the second arc-shaped arm 41 are assembled in the arc-shaped sliding groove 60, the first arc-shaped arm 42 and the second arc-shaped arm 41 are stacked, and the first arc-shaped arm 42 is located in the second arc. Below the shaped arm 41 (taking the placement direction of the spindle assembly in FIG. 13 as the reference direction).

Also refer to FIG. 14, which shows a schematic structural diagram of the first arc-shaped arm. The first arc-shaped arm 42 may be disposed on the first support member, or may belong to a part of the structure of the first support member. At this time, the first support member The piece includes a first arc-shaped arm 42. Taking the first arc-shaped arm 42 as a first support as an example, the first arc-shaped arm 42 has a first arm 423 and a second arm 422 arranged along the length of the spindle assembly. The thickness of the first arm 423 is smaller than that of the second arm. The thickness of the arm 422 forms a step structure (not shown in the figure) between the first arm 423 and the second arm 422; wherein, the second arm 422 has a second end surface 421 facing the damping block. Also refer to Figure 16, which shows a schematic structural view of the second arc-shaped arm. The second arc-shaped arm 41 can be provided on the first support, or it can belong to a part of the second support. At this time, the second support The piece includes a second arc-shaped arm 41. Taking the second arc-shaped arm 41 as a second support as an example, the second arc-shaped arm 41 has a third arm 413 and a fourth arm 412 arranged along the length of the spindle assembly. The thickness of the third arm 413 is greater than that of the fourth arm. The thickness of the arm 412 forms a step structure between the third arm 413 and the fourth arm 412; wherein, the fourth arm 412 has a third end surface 411 facing the damping block. When the first arc-shaped arm 42 and the second arc-shaped arm 41 are assembled in the arc-shaped sliding groove, the first arm 423 and the third arm 413 are stacked, the second arm 422 and the fourth arm 412 are stacked, and the first arc-shaped arm The step structure of 42 abuts the step structure of the second arc-shaped arm 41, thereby limiting the axial movement of the second arm 422 and the fourth arm 412, so that the second end surface 421 and the third end surface 411 can be in good contact with the damping block. contact.

Continuing to refer to FIG. 14, the second arm 422 has a second end surface 421 facing the damping block. The second end surface 421 includes a second convex surface 421b and a third concave surface 421a connected to the second convex surface 421b. An arc-shaped arm 42 is away from one end of the first support plate. 15 also shows a schematic structural diagram of the damping block. The damping block 43 is provided with a first end surface 432 opposite to the second end surface 421. The first end surface 432 includes a first convex surface 432b and a first convex surface 432b. Connected first concave surface 432a.

Continuing to refer to FIG. 16, the fourth arm 412 has a third end surface 411 facing the damping block. The third end surface 411 includes a third convex surface 411 b and a fourth concave surface 411 a connected to the third convex surface 411 b. Wherein, the fourth concave surface 411a is provided at an end of the second arc-shaped arm 41 away from the second support plate. 15 together, the first end surface 432 further includes a second concave surface 432c connected to the first convex surface 432b, and the fourth concave surface 411a cooperates with the second concave surface 432c. When the electronic device is in the unfolded state, the third convex surface 411b of the fourth arcuate arm 41 abuts against the first convex surface 432b.

In order to facilitate the understanding of the cooperation between the first arc-shaped arm, the second arc-shaped arm and the damping block provided by the embodiments of the present application, the following description will be made in conjunction with the motion state of the electronic device. When the electronic device changes from the unfolded state to the folded state, Drive the first support member and the second support member to rotate relative to the main shaft assembly. For the convenience of description, firstly, three angles of the electronic device when folded are defined: the first angle, the second angle, the third angle, and the fourth angle. Wherein, the first angle is greater than the fourth angle, the fourth angle is greater than the second angle, and the second angle is greater than the third angle. For example, the first angle is about 180 degrees, that is, the first housing and the second housing are in an unfolded state; the third angle is about 0 degrees, that is, the first housing and the second housing are in a folded state; The angle and the fourth angle can be angles between 0 and 180 degrees, such as different angles such as 30°, 45°, 60°, etc., that is, the second angle and the fourth angle correspond to the location between the first housing and the second housing Between the folded state and the expanded state. The aforementioned first angle, second angle, third angle, and fourth angle also correspond to the relative angles of the first support member and the second support member.

When the included angle between the first housing and the second housing of the electronic device is the first angle, at this time, the first housing and the second housing are flattened, and the first arc-shaped arm and the second arc-shaped arm The status is shown in Figure 10. Referring to FIGS. 14, 15 and 16 together, the first convex surface 432b abuts against the second convex surface 421b, and the first convex surface 432b abuts against the third convex surface 411b. At this time, the elastic element is in a compressed state, and the elastic deformation amount of the elastic element is the first deformation amount.

When the first housing and the second housing of the electronic device start to rotate relatively, the included angle between the first housing and the second housing is a fourth angle. At this time, the first arc arm 42 and the second arc When the shape arm 41 rotates relative to the main shaft assembly, the first support plate 21 drives the third arc arm 42 to rotate, and the second support plate 31 drives the second arc arm 41 to rotate. At the same time, the second convex surface 421b slides relative to the first convex surface 432b, the second convex surface 421b partially abuts the first convex surface 432b; the third convex surface 411b slides relative to the first convex surface 432b, the third surface 411b partially abuts the first convex surface 432b . At this time, the elastic deformation amount of the elastic member is still the first deformation amount.

When the included angle between the first housing and the second housing of the electronic device is the second angle, the damping block 43 slides toward the first arc-shaped arm 42 and the second arc-shaped arm 41 under the push of the elastic member. The two convex surfaces 421b are out of contact with the first convex surface, and the third convex surface 411b is out of contact with the first convex surface 432b. At the same time, the first concave surface 432a abuts the third concave surface 421a, and the second concave surface 432c abuts the fourth concave surface 411a. At this time, the elastic deformation amount of the elastic member is the second deformation amount (the first deformation amount is greater than the second deformation amount), and the second deformation amount of the elastic member causes the first concave surface 432a to push the third concave surface 421a, and the first concave surface 432a The third concave surface 421a is provided with a force that helps the first arcuate arm 42 to rotate. At the same time, the fourth concave surface 411a pushes the second concave surface 432c, and the fourth concave surface 411a pushes the second concave surface 432c to provide a force to help the second arcuate arm 41 rotate. In order to facilitate the understanding of the force exerted by the first arcuate arm 42 and the second arcuate arm 41, the force exerted by the first arcuate arm is taken as an example for description.

As shown in FIG. 14, since the third concave surface 421a and the longitudinal direction of the spindle assembly form a certain angle, two component forces are generated on the third concave surface 421a respectively, and the force received by the third concave surface 421a is F=F1+ F2, where F1 is the force component perpendicular to the length of the main shaft, and F2 is the force component parallel to the length of the main shaft assembly. When the first support member rotates, the component force F1 perpendicular to the longitudinal direction of the main shaft assembly can be used as an auxiliary force to assist the rotation of the first support member to push the first support member to rotate. When the included angle between the first housing and the second housing of the electronic device is the second angle, for example, when the included angle between the first housing and the second housing is 30°, the fourth concave surface 411a and the second concave surface 432c contacts, pushed by the elastic member, pushes the damping block 43 to slide toward the first arc-shaped arm 42, and the first concave surface 432a pushes the third concave surface 421a to push the first arc-shaped arm 42 to rotate.

When the first arc-shaped arm 42 and the second arc-shaped arm 41 rotate relative to the main shaft assembly, so that the included angle between the first housing and the second housing of the electronic device is a third angle, the electronic device is in a folded state at this time . As shown in Figure 18, the elastic member has a third amount of deformation (the second amount of deformation is greater than the third amount of deformation). Under the action of the elastic member, the damping block 43 abuts against the limit block, thereby limiting the sliding movement of the damping block 43. Position such that the first concave surface 432a is in clearance fit with the third concave surface 421a. Similarly, the second concave surface 432c is in clearance fit with the fourth concave surface 411a, so as to prevent the damping block 43 from still applying force to the first arc-shaped arm when the electronic device is folded. 42 and second arcuate arm 41.

It can be seen from the above description that the cooperation between the convex and concave surfaces can give the first support and the second support the force required to rotate, which can help the user overcome the flexible screen when the electronic device is folded. The tension is convenient for users to fold. Through the cooperation of the slope surface, it is convenient to keep the electronic device in the folded state after being folded.

The damping assembly provided by the embodiment of the present application provides the torque required for the rotation of the first housing and the second housing through the cooperation of the damping block with the first arc-shaped arm and the second arc-shaped arm. As shown in Figure 13, the torque received by the first arc-shaped arm 42: T1=r*F1 (T1 is the torque received by the first arc-shaped arm 42, r is the radius corresponding to the first arc-shaped arm 42, F3 is the first The friction force received by the arc arm 42); the torque received by the second arc arm 41: T2=r*F3 (T2 is the torque received by the second arc arm 41, r is the radius corresponding to the second arc arm 41, F3 is the vertical component force received by the fourth concave surface of the second arc-shaped arm 41); as can be seen from Figure 13, the axis (point O) around which the first arc-shaped arm 42 and the second arc-shaped arm 41 rotate is located on the main shaft Outside of the assembly, the dimensions of r and R are much larger than the thickness of the spindle assembly, so when the first arc-shaped arm 42 and the second arc-shaped arm 41 rotate, they can receive a larger torque, compared with the prior art shown in FIG. 1 For the concave cam structure in the middle, it can provide more torque. When the above structure is adopted, the thickness of the main shaft assembly only needs to meet the thickness of the arc-shaped slide groove, and there is no need to provide the entire annular slide. Therefore, the shaft mechanism provided by the embodiment of the present application can provide a larger torque under the premise , The thickness is smaller than the thickness of the shaft mechanism shown in FIG. 1.

Continuing to refer to FIG. 13, since the second arc-shaped arm 41 is located above the first arc-shaped arm 42 (taking the placement direction of the spindle assembly shown in FIG. 13 as the reference direction), the radius R corresponding to the second arc-shaped arm 41 is It is larger than the radius r corresponding to the first arc-shaped arm 42. When the damping effect is received, it is provided by the friction force received by the first arc-shaped arm and the second arc-shaped arm. The friction force satisfies the following formula: F=μ×Fn, where F is the friction force, μ is the friction coefficient, and Fn is the pressure. When the first arc-shaped arm 42 and the second arc-shaped arm 41 are made of the same material, the friction coefficients of the two are approximately the same. When the damping block 43 is in contact with the first arc-shaped arm 42 and the second arc-shaped arm 41, the contact area of the first arc-shaped arm 42 and the damping block 43 is larger than the contact area of the second arc-shaped arm 41 and the damping block 43, The pressure applied by the damping block 43 to the first arc-shaped arm 42 is greater than the pressure applied by the damping block 43 to the second arc-shaped arm 41. Therefore, in order to make the damping effect of the first arc-shaped arm 42 and the second arc-shaped arm 41 approximately equal, when the first arc-shaped arm 42 and the second arc-shaped arm 41 are arranged, the thickness of the first arc-shaped arm 42 is greater than that of the first arc-shaped arm 42 and the second arc-shaped arm 41. The thickness of the two arc-shaped arms 41, where the thickness of the first arc-shaped arm 42 refers to the width D of the second end surface 421, and the thickness of the second arc-shaped arm 41 refers to the width d of the third end surface 411, D>d . For example, the width of the second end surface 421 is 1 to 2 times the width of the third end surface 411. In FIG. 13, the width of the second end surface 421 is twice the width of the second surface 11. Of course, the width of the second end surface 421 is the width of the third end surface 411 and other width ratios can also be adopted, and it is only necessary to ensure that the damping effects received by the second support member 30 and the first support member 20 are approximately equal.

In addition to the above-mentioned limitation on the width of the second end surface 421 and the third end surface 411, when the third concave surface 421a and the fourth concave surface 411a are provided, the slope of the third concave surface 421a is greater than the slope of the fourth concave surface 411a, so as to achieve the When the three concave surfaces 421a cooperate with the first concave surface 432a and the fourth concave surface 411a cooperates with the second concave surface 432c, they can provide approximately equal pushing force to the first support 20 and the second support 30, so that the first support 20 and The second support 30 can rotate synchronously.

When the above-mentioned third concave surface and the first concave surface are provided, they can be arranged in the manner shown in Figures 14 and 16, or two third concave surfaces 421a can be provided on the first arc-shaped arm 42 and the second arc-shaped arm 41 Two fourth concave surfaces 411a are provided. At this time, there are also two first concave surfaces 432a and second concave surfaces 432c on the corresponding damping block 43. At this time, the damping block 43 will provide the auxiliary force when the electronic device is unfolded and folded through the cooperation of the slope surface, and can provide the flattening holding force when unfolding.

As shown in Figure 17, when the damping block 43 slides to the set position, the limit block 12 abuts on the damping block 43 and limits the stroke of the damping block 43, thereby preventing the damping block 43 from giving the first arc-shaped arm The excessive force of 42 and the second arc-shaped arm 41 prevents the first support member 20 and the second support member 30 from being forced to tilt during the initial stage of the deployment process of the electronic device to cause jamming and jamming, thereby improving the electronic equipment The use effect of the equipment.

As shown in Figure 18, when the electronic device is in the folded state, the first arc-shaped arm 42 and the second arc-shaped arm 41 are out of contact. In order to facilitate the unfolding process of the electronic device, the first arc-shaped arm 42 and the second arc-shaped arm The arc-shaped arms 41 are stacked. When the first arc-shaped arm 42 and the second arc-shaped arm 41 are provided, the ends of the first arc-shaped arm 42 and the second arc-shaped arm 41 are respectively provided with matching slope surfaces (not shown in the figure). Mark), through the slope surface can be guided.

In order to facilitate the separation of the first arc-shaped arm and the second arc-shaped arm from the main shaft assembly, the above-mentioned third arc-shaped arm and the fourth arc-shaped arm can also be provided with a limiting boss to prevent the first arc-shaped arm and the second arc-shaped arm from The arc-shaped arm is separated from the arc-shaped sliding groove, and the specific structure can be referred to the above description, which will not be described in detail here.

The embodiments of the application also provide an electronic device, such as a mobile phone, a PDA, a notebook computer, or a tablet computer. However, no matter what kind of electronic equipment is used, it includes the structure shown in FIG. 2a: the first housing 200, the rotating shaft mechanism 100, the second housing 300, and the fixed on the first housing 200 and the second housing 300 The flexible screen 400. Continuing to refer to FIG. 2a, the rotating shaft mechanism 100 is connected to the first housing 200 and the second housing 300 respectively. The rotation of the rotating shaft mechanism 100 causes the first housing 200 and the second housing 300 to rotate relatively, and the flexible screen 400 covers The first housing 200, the second housing 300, and the rotating shaft mechanism 100 are respectively bonded to the first housing 200 and the second housing 300. When in use, the electronic device includes two states: an expanded state and a folded state. As shown in FIG. 2a, when the electronic device is unfolded, the first housing 200 and the second housing 300 are arranged separately on both sides of the rotating shaft mechanism 100, and the flexible screen 400 is unfolded at this time. When bending, the first housing 200 and the second housing 300 rotate relative to the shaft mechanism 100, and after being folded, the state shown in FIG. 2b is formed. The first housing 200 and the second housing 300 are relatively stacked, and The flexible screen (not shown in the figure) is bent following the first housing 200 and the second housing 300. Figure 2b shows the folding method in which the flexible screen is located inside the electronic device. However, the electronic device provided by the embodiment of the present application is not limited to the folding method shown in Figure 2b, and can also be folded in a manner that the flexible screen is exposed after folding. When the above-mentioned shaft mechanism 100 is used, the arc sliding groove is arranged in the main shaft assembly, so that the axis of the arc sliding groove is located outside the main shaft assembly, and when the damping assembly is set, the first arc arm and the second arc arm Slide along the arc-shaped chute. At this time, the first arc-shaped arm and the second arc-shaped arm rotate around the axis of the arc-shaped chute. When the damping block abuts on the first arc-shaped arm and the second arc-shaped arm, the first arc-shaped arm and the second arc-shaped arm are An arc-shaped arm and a second arc-shaped arm can obtain a larger torque, which realizes the effect of using a thinner mechanism to provide a larger torque. Improve the folding effect of electronic equipment.

The above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope disclosed in this application, which shall cover Within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A rotating shaft mechanism applied to a foldable electronic device, characterized in that the rotating shaft mechanism includes: a main shaft assembly, a supporting assembly, a damping block, and an arc-shaped arm;

The support assembly includes a first support and a second support, the first support is connected to the first housing of the electronic device, and the second support is connected to the second housing of the electronic device ；

The first support is connected to the main shaft assembly, and the first support rotates relative to the main shaft assembly;

The second support is connected to the main shaft assembly, and the second support rotates relative to the main shaft assembly;

The damping block is arranged on the main shaft assembly, and the damping block and the arc-shaped arm are arranged adjacently along the length direction of the main shaft assembly;

The arc-shaped arm includes a first arc-shaped arm and a second arc-shaped arm;

The first arc-shaped arm and the second arc-shaped arm are stacked relative to the main shaft assembly;

The first arc-shaped arm rotates relative to the main shaft assembly, and the second arc-shaped arm rotates relative to the main shaft assembly;

The damping block includes a first end surface, the first arc-shaped arm includes a second end surface, the second arc-shaped arm includes a third end surface, and the first end surface is disposed opposite to the second end surface. One end surface is opposite to the third end surface;

The first end surface includes a first convex surface, a first concave surface, and a second concave surface;

The second end surface includes a second convex surface and a third concave surface;

The third end surface includes a third convex surface and a fourth concave surface;

When the included angle between the first housing and the second housing of the electronic device is a first angle, the first convex surface abuts against the second convex surface, and the first convex surface abuts against the Third convex

When the first arc-shaped arm and the second arc-shaped arm rotate relative to the main shaft assembly, so that the included angle between the first housing and the second housing of the electronic device is a second angle , The first concave surface abuts against the third concave surface, and the second concave surface abuts against the fourth concave surface;

When the first arc-shaped arm and the second arc-shaped arm rotate relative to the main shaft assembly, so that the included angle between the first housing and the second housing of the electronic device is a third angle , The first concave surface is in clearance fit with the third concave surface, the second concave surface is in clearance fit with the fourth concave surface, the first angle is greater than the second angle, and the second angle is greater than the first Three angles.
The shaft mechanism according to claim 1, wherein the first arc-shaped arm is disposed on the first support member, and the second arc-shaped arm is disposed on the second support member.
The shaft mechanism according to claim 1 or 2, wherein the first support member includes the first arc-shaped arm, and the second support member includes the second arc-shaped arm.
The shaft mechanism according to any one of claims 1 to 3, wherein the first arc-shaped arm is sleeved on the main shaft assembly, and the second arc-shaped arm is sleeved on the main shaft assembly.
The rotating shaft mechanism according to claim 4, wherein the spindle assembly is provided with a first limiting chute, the first supporting member is connected to the first limiting chute, and the first supporting member Rotate relative to the first limit chute;

The main shaft assembly is provided with a second limiting chute, the second support is connected to the second limiting chute, and the second support rotates relative to the second limiting chute.
The shaft mechanism according to any one of claims 1 to 5, wherein the damping block slides along the length direction of the main shaft assembly.
The shaft mechanism according to claim 6, wherein the spindle assembly is provided with a limit block, the damping block is provided with a hollow structure that cooperates with the limit block, and the limit block is used to limit the The sliding distance of the damping block along the length of the main shaft assembly.
The shaft mechanism according to any one of claims 1 to 7, wherein the shaft mechanism further comprises an elastic member;

The elastic member and the damping block are arranged in sequence along the length direction of the main shaft assembly;

When the included angle between the first housing and the second housing of the electronic device is a first angle, the elastic deformation amount of the elastic member is the first deformation amount;

When the included angle between the first housing and the second housing of the electronic device is a second angle, the elastic deformation amount of the elastic member is the second deformation amount;

When the included angle between the first housing and the second housing of the electronic device is a third angle, the elastic deformation amount of the elastic member is a third deformation amount, and the first deformation amount is larger than the first deformation amount. The second deformation amount is greater than the third deformation amount.
A rotating shaft mechanism applied to a foldable electronic device, characterized in that the rotating shaft mechanism includes: a main shaft assembly, a supporting assembly, a damping block, and an elastic member;

The main shaft assembly includes a guide inner shaft and a guide outer shaft that are stacked, and an arc-shaped slide groove is formed between the guide inner shaft and the guide outer shaft, and the axis of the arc-shaped slide groove is parallel to the axis of the main shaft assembly. Longitudinal direction;

The support assembly includes a first support and a second support, the first support is connected to the first housing of the electronic device, and the second support is connected to the second housing of the electronic device ；

The arc-shaped arm includes a first arc-shaped arm, a second arc-shaped arm, a third arc-shaped arm, and a fourth arc-shaped arm;

The first arc-shaped arm and the third arc-shaped arm are connected to the first support, the first arc-shaped arm and the third arc-shaped arm are located in the arc-shaped sliding groove, and the The first arc-shaped arm and the third arc-shaped arm rotate around the axis of the arc-shaped chute;

The second arc-shaped arm and the fourth arc-shaped arm are connected to the second support, the second arc-shaped arm and the fourth arc-shaped arm are located in the arc-shaped sliding groove, and the The second arc-shaped arm and the fourth arc-shaped arm rotate around the axis of the arc-shaped chute;

The first arc-shaped arm and the second arc-shaped arm are stacked in the arc-shaped sliding groove;

The damping block is slidably assembled in the arc-shaped sliding groove and slidable along the length direction of the axis. The damping block and the first arc-shaped arm are arranged adjacently along the length direction of the main shaft assembly. The damping block and the second arc-shaped arm are arranged adjacently along the length direction of the main shaft assembly;

The elastic member and the damping block are arranged adjacently along the length direction of the main shaft assembly, and the elastic member abuts against the damping block;

The damping block includes a first end surface, the first arc-shaped arm includes a second end surface, the second arc-shaped arm includes a third end surface, and the first end surface is disposed opposite to the second end surface. One end surface is opposite to the third end surface;

The first end surface includes a first convex surface, a first concave surface, and a second concave surface;

The second end surface includes a second convex surface and a third concave surface;

The third end surface includes a third convex surface and a fourth concave surface;

When the included angle between the first housing and the second housing of the electronic device is a first angle, the first convex surface abuts against the second convex surface, and the first convex surface abuts against the On the third convex surface, the elastic variable of the elastic member is the first deformation variable;

When the first arc-shaped arm and the second arc-shaped arm rotate relative to the main shaft assembly, so that the included angle between the first housing and the second housing of the electronic device is a second angle , The first concave surface abuts the third concave surface, the second concave surface abuts the fourth concave surface, and the elastic deformation amount of the elastic member is a second deformation amount;

When the first arc-shaped arm and the second arc-shaped arm rotate relative to the main shaft assembly, so that the included angle between the first housing and the second housing of the electronic device is a third angle , The first concave surface is in clearance fit with the third concave surface, the second concave surface is in clearance fit with the fourth concave surface, and the elastic deformation amount of the elastic member is the third deformation amount; wherein,

The first deformation amount is greater than the second deformation amount, and the second deformation amount is greater than the third deformation amount;

The first angle is greater than the second angle, and the second angle is greater than the third angle.
An electronic device, comprising the shaft mechanism according to any one of claims 1-9, a first housing, a second housing, the first housing and the first support of the shaft mechanism The second housing is connected with the second support of the rotating shaft mechanism.