WO2022262477A1

WO2022262477A1 - Hinge assembly and foldable electronic device

Info

Publication number: WO2022262477A1
Application number: PCT/CN2022/091874
Authority: WO
Inventors: 李云勇; 姜文杰; 徐正一; 王岗超; 马春军; 陈一阳
Original assignee: 华为技术有限公司
Priority date: 2021-06-15
Filing date: 2022-05-10
Publication date: 2022-12-22
Also published as: CN115480618A

Abstract

Embodiments of the present application provide a hinge assembly and a foldable electronic device. In the hinge assembly, a linear sliding slot is provided on one of a support member and a swing member, and a sliding member is provided on the other, such that the high pair match of a cylindrical pin between the support member and a gear connecting rod and an arc-shaped track slot is replaced with the low pair match of the linear sliding slot between the support member and the swing member and the sliding member, thus, the empty space between the sliding slot and the sliding member is reduced, so that the angle control precision of the support member is higher, and the support member moves in place in two states, i.e., an unfolding state and a folding state. In addition, the swing member is a passively stressed part, and therefore, the movement process is stable, such that when the support member is attached to the swing member, so that the movement of the support member will be more stable.

Description

Hinge assembly and foldable electronic device

This application claims the priority of the Chinese patent application with the application number 202110663650.4 and the application title "hinge assembly and foldable electronic device" submitted to the China Patent Office on June 15, 2021, the entire contents of which are incorporated in this application by reference middle.

technical field

The present application relates to the technical field of terminals, in particular to a hinge assembly and a foldable electronic device.

Background technique

With the continuous development of mobile devices such as mobile phones, users' demand for large-screen mobile phones is becoming more and more intense, but large-screen mobile phones have the obvious problem of inconvenient portability. main direction. Among them, in order to meet the differentiated needs of different users, various foldable mobile phones with screens folded in and folded out have emerged as the times require.

At present, a foldable mobile phone generally includes two structural parts, which are connected by a hinge assembly, so that the two structural parts can rotate relative to each other, and then the two structural parts can be stacked or unfolded. Among them, in order to better support the foldable display screen and ensure that the foldable display screen is not excessively stretched and squeezed during the folding process, the hinge assembly usually includes a main shaft mechanism and a rotating mechanism located on both sides of the main shaft mechanism, The rotating mechanism includes a support plate, a linkage piece and a connecting piece. The linkage piece is connected with the main shaft mechanism and the connecting piece. The connecting piece is connected with the structural piece and the support plate. Turn to fit.

However, in the aforementioned foldable mobile phone, the under-screen support plate in the bending area of the screen does not move smoothly during the folding or unfolding process of the mobile phone, and the angle control accuracy of the support plate is poor.

Contents of the invention

Embodiments of the present application provide a hinge assembly and a foldable electronic device, which realizes the smooth movement of the support mechanism during the unfolding or folding of the electronic device, ensures higher control accuracy of the angle of the support mechanism, and enables the foldable electronic device to Expand or fold the two working state motions into place.

The first aspect of the embodiment of the present application provides a hinge assembly, including:

a main shaft mechanism, and two rotating mechanisms located on both sides of the main shaft mechanism and connected in rotation with the main shaft mechanism;

Each of the rotating mechanisms includes: a support member, at least one connecting member and at least one swinging member;

The supporting member is disposed close to the main shaft mechanism, the connecting member is located at an end of the supporting member away from the main shaft mechanism, and the connecting member is connected to the supporting member;

One end of the oscillating member is rotatably connected to the spindle mechanism, and the other end of the oscillating member is rotatably connected to the connecting member;

One of the oscillating member and the supporting member is provided with a linear chute, and the other of the oscillating member and the supporting member is provided with a sliding member cooperating with the chute, so as to The sliding member is made to move in the chute during the swinging process of the swinging member.

The hinge assembly provided by the embodiment of the present application includes a swinging member, and a linear chute is provided on one of the support member and the swinging member, and a sliding member is provided on the other, so that the connection between the support member and the gear connecting rod The high-coordination between the cylindrical pin and the arc-shaped track groove is replaced by the straight-line chute between the support and the swinging piece and the low-coordination of the slider, so that the virtual position between the chute and the slider is reduced. , so that the angle control precision of the support is higher, and the support moves in place in two states of unfolding and folding. In addition, the oscillating member is a passively stressed part, so the movement process is stable. In this way, when the supporting member is attached to the oscillating member, the movement of the supporting member will be more stable. Therefore, the hinge assembly provided by the embodiment of the present application realizes the smooth movement of the support mechanism during the process of unfolding or folding, and ensures higher control accuracy of the angle of the support mechanism, so that the foldable electronic device can operate in two working states of unfolding or folding. Exercise in place.

In a possible implementation manner, at least two opposite sliding slots are provided on the support member, a part of the swinging member is located between the two sliding slots, and both sides of the swinging member The edges are respectively provided with said sliders.

In a possible implementation manner, at least two opposite protrusions are provided on one side of the support member, and the sliding groove is opened on the protrusions.

In a possible implementation manner, the chute passes through from the top end surface of the protruding block to the bottom end of the protruding block, and the chute is inclined toward the connecting piece.

In a possible implementation manner, the chute includes at least two opposite and parallel plane groove walls, and an end groove wall located between one ends of the two plane groove walls;

A notch into which the slider can slide is formed between the other ends of the two planar groove walls.

In a possible implementation manner, the sliding member has a first sliding plane and a second sliding plane respectively opposite to the two planar groove walls, and the distance between the first sliding plane and the second sliding plane is The extension directions between them intersect to form an included angle.

In a possible implementation manner, when the support member and the main shaft mechanism are in the unfolded state, the second sliding plane is in contact with one of the plane groove walls, and the first sliding plane is in contact with the other. The planar groove walls form a first included angle;

When the support member and the main shaft mechanism are in the folded state, the first sliding plane is in contact with the other plane groove wall, and the second sliding plane is in contact with the one of the plane groove walls. form the second angle.

In a possible implementation manner, the sliding member is a wedge, and the thick end of the wedge faces the groove bottom of the chute.

In a possible implementation manner, the end of the wedge facing the groove bottom of the chute is an arc surface, and the end groove wall of the chute is an arc wall matching the arc surface .

In a possible implementation manner, the sliding member is a cylinder.

In a possible implementation manner, one end of the swinging member facing the main shaft mechanism has a first rotating part, and the outer edges on both sides of the first rotating part have circular arc surfaces, and the main shaft mechanism has a The arc portion of the arc surface rotates and fits, and the spindle mechanism is connected to the spindle mechanism in rotation through the first rotating portion;

The other end of the oscillating member has a second rotating part, and the second rotating part is rotatably connected with the connecting member.

In a possible implementation manner, each of the rotating mechanisms further includes: at least one linkage, one end of the linkage is connected to the main shaft mechanism in rotation, and the other end of the linkage is rotated with the support Cooperate.

In a possible implementation manner, the support member has an arc-shaped track groove, and the linkage member and the support member are rotatably connected to each other through the cooperation of cylindrical pins with the arc-shaped track groove.

In a possible implementation manner, one end of the linkage member has a first gear, and the gear is rotationally connected with the main shaft mechanism through a rotating shaft, and there are two second gears meshing with each other in the main shaft mechanism, so The second gear meshes with the first gear.

In a possible implementation manner, the support has a plurality of virtual shafts, the connecting part has arc-shaped grooves matching with the virtual shafts, and the support and the connecting part pass through the virtual The shaft cooperates with the arc groove to achieve rotational connection.

The second aspect of the embodiment of the present application provides a foldable electronic device, at least including: a first structural member, a second structural member, and the aforementioned hinge assembly;

The first structural member and the second structural member are respectively located on both sides of the hinge assembly, and the first structural member and the second structural member are respectively fixedly connected to the connectors in the hinge assembly;

And, it also includes: a battery cover and a foldable first display screen; the battery cover and the first display screen are respectively located on both sides of the hinge assembly, the first structural member and the second structural member surface.

In the foldable electronic device provided by the embodiment of the present application, by including the above-mentioned hinge assembly, the high-pair fit between the cylindrical pin and the arc-shaped track groove between the support member and the gear connecting rod is replaced by that between the support member and the swing member The linear chute is matched with the lower part of the slider, so that the empty position between the chute and the slider is reduced, so that the angle control accuracy of the support is higher, and the support moves in place in the two states of unfolding and folding . In addition, the oscillating member is a passively stressed part, so the movement process is stable. In this way, when the supporting member is attached to the oscillating member, the movement of the supporting member will be more stable. Therefore, the foldable electronic device provided by the embodiment of the present application realizes the smooth movement of the support mechanism during the unfolding or folding process of the electronic device, and ensures a higher control accuracy of the angle of the support mechanism, so that the foldable electronic device is unfolded or folded. Fold the two working state motions into place.

In a possible implementation manner, it further includes: a second display screen, the first display screen is located on one side surface of the hinge assembly, the first structural component, and the second structural component, and the second display screen The screen and the battery cover are respectively located on the other side surfaces of the first structural component and the second structural component.

Description of drawings

FIG. 1 is a schematic structural diagram of a foldable electronic device in an unfolded state provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a foldable electronic device in a half-folded state provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a foldable electronic device in a folded state provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of an exploded structure of a foldable electronic device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a hinge assembly of a foldable electronic device provided in an embodiment of the present application when it is in an unfolded state;

Fig. 6 is a side view of the hinge assembly of the foldable electronic device provided by the embodiment of the present application switching between the unfolded state and the folded state;

Fig. 7 is a schematic structural diagram of disassembling one of the rotating mechanisms and the main shaft mechanism in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

FIG. 8 is an exploded schematic diagram of one of the rotating mechanisms in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

Fig. 9 is a partial schematic diagram of cooperation between a support member and a gear link in a hinge assembly of a foldable electronic device;

Fig. 10 is a schematic diagram of a partially disassembled structure of a swing member and a support member in a hinge assembly of a foldable electronic device provided by an embodiment of the present application;

Fig. 11 is a schematic diagram of a disassembled structure in another direction of the swing member and the support member in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

Fig. 12 is a schematic diagram of the hinge assembly of the foldable electronic device provided by the embodiment of the present application after the swinging member is assembled on the supporting member;

FIG. 13 is a schematic perspective view of the swinging member in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

FIG. 14 is a schematic partial cross-sectional view of the longitudinal section of the hinge assembly of the foldable electronic device provided by the embodiment of the present application at the swing member;

FIG. 15 is another schematic structural view of the swing member in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

Fig. 16 is a schematic diagram of the disassembled structure of the connector and the support in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

Fig. 17 is a partial cross-sectional schematic diagram of a longitudinal section of a hinge assembly of a foldable electronic device provided by an embodiment of the present application at a connecting piece;

Fig. 18 is another disassembled schematic diagram of the rotating mechanism in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

FIG. 19 is a schematic perspective view of the linkage in the hinge assembly of the foldable electronic device provided by the embodiment of the present application;

Fig. 20 is a schematic structural view of the hinge assembly of the foldable electronic device provided by the embodiment of the present application after the linkage is assembled on the support;

FIG. 21 is a schematic partial cross-sectional view of the longitudinal section of the hinge assembly of the foldable electronic device provided by the embodiment of the present application at the linkage.

Explanation of reference signs:

10-first display screen; 10a-second display screen; 11-first display area; 12-second display area; 13-third display area;

21-first structural member; 211-first metal middle plate; 212-first frame; 22-second structural member; second metal middle plate-221; second frame-222;

30-hinge assembly; 31-main shaft mechanism; 311-outer shaft; 3112-arc part; 312-inner shaft; 313, 314-second gear; 32-rotation mechanism;

321-connector; 3211-arc groove;

322-swing member; 3221-sliding member; 3222a-first sliding plane; 3222b-second sliding plane; 3223-arc surface;

323-support; 3231-chute; 3232-arc track groove; 3233-bump; 3234a, 3234b-plane groove wall; 3235-virtual axis;

324-linkage; 3241-first gear; 3242-tooth structure; 3243-pin hole;

325-pin shaft; 326-cylindrical pin;

40 - Battery cover.

detailed description

The terms used in the embodiments of the application are only used to explain the specific embodiments of the application, and are not intended to limit the application. The implementation of the embodiments of the application will be described in detail below with reference to the accompanying drawings.

Wherein, the foldable electronic device provided by the embodiment of the present application may include but not limited to mobile phone, tablet computer, notebook computer, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), handheld computer, touch TV, walkie-talkie, Foldable fixed terminals or mobile terminals such as netbooks, POS machines, personal digital assistants (PDAs), wearable devices, and virtual reality devices.

In the embodiment of the present application, the above-mentioned foldable electronic device is used as an example for illustration, and the mobile phone is a foldable mobile phone with a screen folded inwardly and an external screen added.

Taking the foldable electronic device as an example of a foldable screen mobile phone, the hinge assembly and the foldable electronic device provided by the embodiments of the present application will be described in detail below.

1 and 2, the folding screen mobile phone may at least include: a first structural member 21, a second structural member 22 and a hinge assembly 30, wherein the first structural member 21 and the second structural member 22 are located at the hinge assembly respectively. 30, and the first structural member 21 and the second structural member 22 are fixedly connected with the hinge assembly 30 respectively. Specifically, the first structural member 21 and the second structural member 22 are respectively fixedly connected to the connecting parts in the hinge assembly 30 .

It should be noted that the first structural member 21 and the second structural member 22 can be fixedly connected to the connecting member by means of welding, bonding or screw locking, respectively.

When the first structural member 21 and the second structural member 22 are rotated in opposite directions until they are stacked on each other, the folding screen mobile phone is in the folded state; When the structural member 21 and the second structural member 22 cannot rotate (for example, the first structural member 21 and the second structural member 22 are on the same plane), the folding screen mobile phone is in an unfolded state. Wherein, the unfolding process is from the folded state to the unfolded state, and the folding process is from the unfolded state to the folded state.

In addition, it should be noted that the number of the first structural member 21 and the second structural member 22 can both be one, so that the folding screen mobile phone can be folded into two layers. Specifically, as shown in FIG. 1 , the folding screen mobile phone can only include A first structural member 21, a second structural member 22 and a hinge assembly 30 for connecting the first structural member 21 and the second structural member 22, the first structural member 21 and the second structural member 22 rotate mutually to stack, so that The foldable electronic device is in the form of two layers.

Alternatively, the number of the first structural member 21 and the second structural member 22 may be multiple (not shown), and adjacent first structural members 21 and second structural members 22 have a structure for connecting the first structural member 21. and the hinge assembly 30 of the second structural member 22, so that the foldable electronic device can be folded into multiple layers. For example, a foldable electronic device may include two second structural parts 22, a first structural part 21, and two hinge assemblies 30 for connecting the first structural part 21 and the second structural part 22, and the two second structural parts The structural members 22 are located on both sides of the first structural member 21, and are rotatably connected to the first structural member 21 through the hinge assembly 30, one of the second structural members 22 can rotate with the first structural member 21 to stack each other, and the other The second structural member 22 can also be rotated relative to the first structural member 21 to stack, so that the foldable electronic device presents a three-layer folded configuration. When two of the first structural member 21 and the second structural member 22 are rotated to the same plane , the foldable electronic device is in an unfolded state.

Referring to FIG. 1, the foldable electronic device provided by the embodiment of the present application may further include: a foldable first display screen 10, wherein the foldable first display screen 10 may be arranged on the hinge assembly 30, the first structural member 21 and the surface of the second structural member 22. When the first structural member 21 and the second structural member 22 are folded, the foldable first display screen 10 is bent and attached between the first structural member 21 and the second structural member 22, when the first structural member 21 and the second structural member When the structural member 22 is unfolded, the foldable first display screen 10 is also unfolded accordingly.

In practical application, the foldable first display screen 10 can be glued on the surface of the hinge assembly 30, the first structural member 21 and the second structural member 22, so as to ensure that at least part of the foldable first display screen 10 is stably mounted on the hinge assembly. 30 to improve the stability of the foldable first display screen 10 in the foldable electronic device.

Referring to FIG. 1, the first display screen 10 may include: a first display area 11, a second display area 12, and a third display area 13 located in the first display area 11 and the second display area 12, wherein, The first display area 11 may be located on the surface of the first structural member 21 , the second display area 12 may be located on the surface of the second structural member 22 , and the third display area 13 may be located on the surface of the hinge assembly 30 .

Of course, in some embodiments, the foldable electronic device can also be a notebook computer, and the notebook computer can also include a first structural member 21 and a second structural member 22, and the first structural member 21 and the second structural member 22 can face each other. Rotate to stack each other, so that the notebook computer is in a folded state; on the contrary, when the first structural member 21 and the second structural member 22 start from the stacked state and rotate opposite to each other until they cannot rotate, the notebook computer is in an unfolded state. Wherein, in the unfolded state, the partially foldable first display screen 10 on the first structural member 21 can be used for displaying images, etc., and the partially foldable first display screen 10 on the second structural member 22 can be used as a virtual keyboard .

2 and 3, the electronic device may further include: a second display screen 10a, the second display screen 10a and the first display screen may be located on both sides of the first structural member 21 or the second structural member 22, for example As shown in FIG. 2, the second display screen 10a is opposite to the second display area 12 of the first display screen, and the second display screen 10a and the second display area 12 of the first display screen are respectively located in the second structure 22, so that, as shown in FIG. 3, when the electronic device is in a folded state, the second display screen 10a can be used as an outer screen. Of course, in some examples, the second display screen 10a may not be provided.

Wherein, the second display screen 10a may be a liquid crystal display screen, of course, the second display screen 10a may also be a flexible screen.

In the embodiment of the present application, as shown in FIG. 2 , it may further include: a battery cover 40 , and the battery cover 40 and the first display area 11 of the first display screen 10 may be respectively located on both sides of the first structural member 21 .

In the embodiment of the present application, as shown in FIG. 4 , the first structural member 21 and the second structural member 22 may be middle frames, wherein the first structural member 21 may include a first metal middle plate 211 and be surrounded by a first metal The first frame 212 on the outer edge of the middle plate 211 , the second structural member 22 may include a second metal middle plate 221 and a second frame 222 surrounding the outer edge of the second metal middle plate 221 . The hinge assembly 30 is fixedly connected with the first metal middle plate 211 and the second metal middle plate 221 respectively.

The hinge assembly 30 used for the above-mentioned foldable electronic device in the embodiment of the present application will be described in detail below.

As shown in FIG. 5 , the hinge assembly 30 may include: a main shaft mechanism 31 , and two rotating mechanisms 32 located on both sides of the main shaft mechanism 31 and connected in rotation with the main shaft mechanism 31 . Wherein, as shown in FIG. 5 , the two rotating mechanisms 32 may be arranged symmetrically with respect to the main shaft mechanism 31 . The two rotating mechanisms 32 can rotate relative to the main shaft mechanism 31 along the two dotted arrows in Fig. 5, for example, as shown in Fig. When the first rotating mechanism 32 is in the unfolded state, the two rotating mechanisms 32 are back to back relative to the main shaft mechanism 31 .

Referring to FIG. 7 , when each rotating mechanism 32 is rotationally connected to the main shaft mechanism 31 , the rotating mechanism 32 and the main shaft mechanism 31 can be detachably connected.

As shown in FIG. 8 , each rotating mechanism 32 may include: a connecting member 321 and a supporting member 323 , the supporting member 323 is used to support the third display area 13 of the first display screen 10 , and each rotating mechanism 32 One end of the connector 321 is fixedly connected with the first structure 21 and the second structure 321 respectively, the support 323 is arranged close to the spindle mechanism 31, the connector 321 is located at the end of the support 323 away from the spindle mechanism 31, and the connector 321 is connected to the spindle mechanism 31. The support members 323 are rotatably connected.

In the embodiment of the present application, the number of connecting pieces 321 can be one or more. For example, in FIG. 8, the number of connecting pieces 321 in each rotating mechanism is three, and the three connecting pieces 321 can 31 are arranged at intervals in the axial direction. Wherein, the support member 323 may be a support plate extending along the axial direction of the spindle mechanism 31 .

In some researches, as shown in FIG. 9, the other end of the connecting member 321 is rotationally connected with one end of the gear link 322a, and the other end of the gear link 322a is rotationally connected with the main shaft mechanism 31, in order to ensure that during the folding and unfolding process, The angle control precision of support member 323 is higher and runs smoothly, so, referring to shown in Figure 9, be provided with cylindrical pin 322b on gear connecting rod 322a, be provided with arc track groove 323a on support member 323, cylindrical pin 322b rotates with The rotation of mechanism 32 moves in arc track groove 323a, but, when cylindrical pin 322b moves in arc track groove 323a, because be line contact between cylindrical pin 322b and arc track groove 323a, so, cylindrical pin 322b and arc track The track groove 323a is in a high-pair fit, so that during the movement of the support member 323, there are more empty positions between the cylindrical pin 322b and the arc-shaped track groove 323a, resulting in that when the cylindrical pin 322b drives the support member 323 during the movement, The control accuracy of the rotation angle of the support member 323 is poor. In addition, there is a cam fit between the gear connecting rod 322a and the main shaft mechanism 31, which causes the support member 323 to be unstable during movement.

In order to solve the above problems, in the embodiment of the present application, by including the swinging member 322, and setting a linear sliding groove 3231 on one of the support member 323 and the swinging member 322, and setting a sliding member 3221 on the other, so that the The high pair fit between the cylindrical pin 322b and the arc track groove 323a is replaced by the low pair fit between the linear chute 3231 and the slider 3221, so that the virtual position between the chute 3231 and the slider 3221 is reduced , so that the angle control accuracy of the support member 323 is higher, and the support member 323 moves in place in the two states of unfolding and folding. In addition, the swing member 322 is a passive force-bearing part, so the movement process is stable. In this way, the support member 323 is attached to When the swing member 322 is on, the movement of the support member 323 will be more stable. Therefore, the foldable electronic device provided by the embodiment of the present application realizes the smooth movement of the support mechanism during the unfolding or folding process of the electronic device, and ensures a higher control accuracy of the angle of the support mechanism, so that the foldable electronic device is unfolded or folded. Fold the two working state motions into place.

For example, as shown in FIG. 10 , the rotating mechanism 32 further includes: a swinging member 322 , one end of the swinging member 322 is connected to the spindle mechanism 31 in rotation, and the other end of the swinging member 322 is connected in rotation to the connecting member 321 .

One of the support member 323 and the swing member 322 is provided with a linear chute 3231, and the other is provided with a sliding member 3221. For example, as shown in FIG. 10, a linear chute is provided on the support member 323. 3231, the swinging member 322 is provided with a sliding member 3221, and the sliding member 3221 moves in the slide groove 3231 during the swinging process of the swinging member 322. Wherein, since the chute 3231 is linear and not arc-shaped, when the sliding member 3221 moves in the chute 3231, the sliding member 3221 moves along the linear groove wall of the chute 3231, thus realizing the connection between the sliding member 3221 and the sliding member 3221. The low secondary movement between the slots 3231 reduces the virtual position of the sliding part 3221 when it moves in the chute 3231. During the folding and unfolding process, the angle control accuracy of the supporting part 323 is higher. In addition, the swinging part 322 is passively stressed parts, the movement process is stable, and when the support member 323 is attached to the swing member 322, the movement will be more stable.

Of course, in some examples, a sliding slot 3231 may also be provided on the swinging member 322 , and a sliding member 3221 may be provided on the supporting member 323 .

In a possible implementation, as shown in FIG. 10 , the support member 323 is provided with at least two opposite sliding grooves 3231 , and the part of the swinging member 322 is located between the two sliding grooves 3231 (see FIG. 12 ), for example One end of the oscillating member 322 is located in the spindle mechanism 31 , and the other end of the oscillating member 322 is connected to the connecting member 321 through the space between the two sliding slots 3231 . Wherein, as shown in FIG. 10 , sliding pieces 3221 are respectively provided on the two side edges of the swinging piece 322 .

Wherein, as shown in FIG. 10 , at least two opposite protrusions 3233 are provided on one side of the support member 323 , and sliding grooves 3231 are opened on the protrusions 3233 . The chute 3231 runs through from the top end of the projection 3233 to the bottom of the projection 3233 , for example, the top of the chute 3231 is open, and the slider 3221 can slide into the chute 3231 from the open position at the top. The bottom end of the sliding slot 3231 extends to the surface of the supporting member 323 . In the embodiment of the present application, in order to facilitate the movement of the sliding member 3221 in the sliding groove 3231 when the swinging member 322 rotates, the sliding groove 3231 is inclined toward the connecting member 321. As shown in FIG. 10 , the chute 3231 is an inclined linear chute, and the angle between the chute 3231 and the support member 323 is less than 90°, and the size of the angle is set according to actual needs.

Wherein, the protrusion 3233 and the supporting member 323 may be an integral structure.

Referring to Figures 10 and 11, the chute 3231 includes at least two opposite and parallel plane walls, for example, a plane wall 3234b (see Figure 10) and a plane wall 3234a (see Figure 11), the plane wall 3234b and the other end of the planar groove wall 3234a form a notch for the slider 3221 to slide in, and the sliding groove 3231 also includes: and an end groove wall (ie, groove bottom opposite top notch).

By including the chute 3231 with two opposite plane chute walls, it is ensured that the two chute walls of the chute 3231 are straight, so that when the sliding part 3221 moves on the plane chute walls, the virtual position is reduced, ensuring that the support 323 angle control accuracy is higher.

10 and 11, the slider 3221 has a first sliding plane 3222a (see FIG. 10) and a second sliding plane 3222b (see FIG. 11) opposite to the two plane groove walls, and the first sliding plane 3222a The intersection with the extending direction of the second sliding plane 3222b forms an included angle, for example, the first sliding plane 3222a and the second sliding plane 3222b are not parallel. This ensures that the swinging member 322 can move in the slide groove 3231 during the rotation.

In the embodiment of the present application, as shown in FIG. 13 , the end of the swing member 322 facing the main shaft mechanism 31 has a first rotating part 3224 , and the outer edges of both sides of the first rotating part 3224 have circular arc surfaces 3225 . The circular arc part 3112 (referring to Fig. 14) that the arc surface 3225 rotates, the main shaft mechanism 31 is connected with the main shaft mechanism 31 through the first rotating part 3224; 3226 is rotationally connected with the connecting piece 321 through a pin shaft 325 (see FIG. 14 ).

For example, as shown in FIG. 14 , the spindle mechanism 31 may include: an inner shaft 312 and a plurality of outer shafts 311, the inner shaft 312 is connected to the outer shaft 311, wherein the first rotating part 3224 of the swing member 322 passes through the inner shaft 312 The definition of the outer shaft 311 realizes the rotation connection with the main shaft mechanism 31 , for example, a circular arc portion 3112 is defined between the inner shaft 312 and the outer shaft 311 , and the first rotating portion 3224 of the swing member 322 can rotate around the arc portion 3112 .

Referring to Fig. 14, when the support member 323 and the spindle mechanism 31 are in the unfolded state (that is, the electronic device is in the unfolded state), the second sliding plane 3222b is in contact with the plane groove wall 3234b, and the first sliding plane 3222a is in contact with the plane groove wall 3434a. A first included angle a1 is formed.

When the support member 323 and the spindle mechanism 31 are in the folded state (that is, the electronic device is in the folded state), the first sliding plane 3222a is in contact with the plane groove wall 3234a, and the second sliding plane 3222b and the plane groove wall 3234b form a second included angle a2 . This ensures that when the electronic device is in the unfolded state, the second sliding plane 3222b can abut against the plane groove wall 3234b, ensuring that the support member 323 moves in place during the unfolding movement; when the electronic device is in the folded state, the first sliding plane 3222a and The other planar groove wall 3234a is in contact with each other to ensure that the support member 323 moves in place during the folding movement, so that the control accuracy of the angle of the support member 323 is higher.

In the embodiment of the present application, as shown in FIG. 14 , the sliding member 3221 is a wedge, and the thick end of the wedge (that is, the thicker end of the wedge) faces the bottom of the sliding groove 3231 .

In the embodiment of the present application, as shown in Figure 13, the end of the wedge towards the bottom of the chute 3231 is an arcuate surface 3223, referring to Figure 14, the end groove wall of the chute 3231 is an arcuate wall matching the arcuate surface This ensures that when the electronic device is in the folded state, the arc surface of the slider 3221 and the arc wall of the chute 3231 are in surface contact, and the problem of greater wear when point contact at some positions is less likely to occur.

Certainly, in some examples, as shown in FIG. 15 , the sliding member 3221 may also be a cylinder. In this way, the cylinder can move along the two plane groove walls of the chute 3231. Compared with the arc track groove 323a in FIG. When it is a cylinder, the movement of the cylinder in the slide groove 3231 can still ensure that the angle control accuracy of the support member 323 is improved.

In the embodiment of the present application, when the connecting piece 321 and the supporting piece 323 are rotatably matched, as shown in FIG. 16, the supporting piece 323 has a plurality of virtual shafts 3235, and the connecting piece 321 has arc-shaped grooves 3211 matching with the virtual shafts 3235. , the supporting member 323 and the connecting member 321 are rotationally connected through the cooperation of the virtual shaft 3235 and the arc-shaped groove 3211 . For example, as shown in FIG. 17, when the electronic device is in the unfolded state, one end of the virtual axis 3235 of the support member 323 is located in the arc-shaped groove 3211 on the connecting member 321, and there is additional space in the arc-shaped groove 3211. When the electronic device When the device is in the folded state, the virtual axis 3235 of the support 323 rotates in the arc-shaped groove 3211 on the connecting piece 321, and through the rotational cooperation between the arc-shaped groove 3211 and the virtual axis 3235, the connection between the connecting piece 321 and the supporting piece 323 is realized. In this way, the movement of the supporting member 323 is attached to the connecting member 321 and the swinging member 322, and the swinging member 322 is a passive force-bearing member, and the movement is stable, so the supporting member 323 attached to the connecting member 321 and the swinging member 322 moves smoothly .

In the embodiment of the present application, as shown in FIG. 18, each rotating mechanism 32 also includes: at least one linkage 324. It should be noted that only one linkage 324 is shown in FIG. 18. In actual assembly, the linkage 324 The number of linkages 321 can be consistent with the number of connecting pieces 321, for example, when the number of connecting pieces 321 is two, then the number of linkages 324 can also be two.

Wherein, one end of the linkage member 324 is connected to the main shaft mechanism 31 in rotation, and the other end of the linkage member 324 is rotatably matched with the support member 323 . For example, as shown in FIG. 18, the supporting member 323 has an arc-shaped track groove 3232. Referring to FIG. 19, a pin hole 3243 is provided on the linkage 324. As shown in FIG. 326 passes through the pin hole 3243 and cooperates with the arc track groove 3232 to realize rotational connection.

By arranging at least one linkage 324 and arc track groove 3232 , redundant control is performed on the movement of the support 323 , so that the angular virtual position of the support 323 is reduced and the angle control accuracy of the support 323 is ensured.

Referring to Fig. 21, one end of the linkage 324 has a first gear 3241, the first gear 3241 is rotationally connected with the main shaft mechanism 31 through the rotating shaft 3244, and the main shaft mechanism 31 has two second gears meshing with each other, and the two second gears The gears are, for example, the second gear 313 and the second gear 314 , the second gear 313 meshes with the first gear 3241 , and the second gear 314 meshes with the first gear 3241 of the linkage 324 in another rotating mechanism 32 .

It should be noted that, referring to FIG. 21 , part of the outer surface of the first gear 3241 is provided with tooth structures 3242 , of course, in some examples, the entire outer surface of the first gear 3241 may also be provided with tooth structures 3242 .

Referring to Fig. 21, when the electronic device is in the unfolded state, the cylindrical pin 326 is located at one end of the arc-shaped track groove 3232, and when the electronic device is in the folded state, the cylindrical pin 326 moves to the other end of the arc-shaped track groove 3232 during the rotation . Wherein, the linkage 324 drives the second gear to rotate through the first gear 3241 during the rotation process, and the two first gears 3241 on both sides realize the purpose of synchronous rotation through the second gear 313 and the second gear 314, thus ensuring the main shaft mechanism The rotating parts on both sides of 31 can realize synchronous rotation.

In the description of the embodiments of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a An indirect connection through an intermediary may be an internal communication between two elements or an interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific situations.

The devices or components referred to in the embodiments of the present application must have specific orientations, be constructed and operated in specific orientations, and therefore should not be construed as limiting the embodiments of the present application. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above drawings are used to distinguish similar objects, while It is not necessarily used to describe a particular order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein, for example, can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art It should be understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the embodiments of the present application. The scope of the technical solutions of each embodiment.

Claims

A hinge assembly, characterized in that it comprises:

a main shaft mechanism, and two rotating mechanisms located on both sides of the main shaft mechanism and connected in rotation with the main shaft mechanism;

Each of the rotating mechanisms includes: a support member, at least one connecting member and at least one swinging member;

The supporting member is disposed close to the main shaft mechanism, the connecting member is located at an end of the supporting member away from the main shaft mechanism, and the connecting member is connected to the supporting member;

One end of the oscillating member is rotatably connected to the spindle mechanism, and the other end of the oscillating member is rotatably connected to the connecting member;

One of the oscillating member and the supporting member is provided with a linear chute, and the other of the oscillating member and the supporting member is provided with a sliding member cooperating with the chute, so as to The sliding member is made to move in the chute during the swinging process of the swinging member.
The hinge assembly according to claim 1, wherein at least two opposite slide slots are provided on the support member, a part of the swing member is located between the two slide slots, and the The two side edges of the swinging member are respectively provided with the sliding members.
The hinge assembly according to claim 2, wherein at least two opposite protrusions are arranged on one side of the support member, and the slide grooves are opened on the protrusions.
The hinge assembly according to claim 3, wherein the sliding groove penetrates from the top end surface of the protrusion to the bottom end of the protrusion, and the sliding groove is inclined toward the connecting piece shape.
The hinge assembly according to any one of claims 1-4, characterized in that, the sliding groove at least includes two opposite and parallel plane groove walls, and an end located between one ends of the two plane groove walls tank wall;

A notch into which the slider can slide is formed between the other ends of the two planar groove walls.
The hinge assembly according to claim 5, wherein the sliding member has a first sliding plane and a second sliding plane respectively opposite to the two plane groove walls, and the first sliding plane and the The extension directions of the second sliding planes intersect to form an included angle.
The hinge assembly according to claim 6, wherein when the support member and the main shaft mechanism are in an unfolded state, the second sliding plane is in contact with one of the plane groove walls, and the first The sliding plane forms a first angle with the other said plane groove wall;

When the support member and the main shaft mechanism are in the folded state, the first sliding plane is in contact with the other plane groove wall, and the second sliding plane is in contact with the one of the plane groove walls. form the second angle.
The hinge assembly according to claim 6 or 7, wherein the sliding member is a wedge, and the thick end of the wedge faces the groove bottom of the slide groove.
The hinge assembly according to claim 8, wherein the end of the wedge facing the groove bottom of the chute is an arc surface, and the end groove wall of the chute is in line with the arc surface. Matching curved walls.
The hinge assembly according to any one of claims 1-5, wherein the sliding member is a cylinder.
The hinge assembly according to any one of claims 1-10, characterized in that, one end of the swing member facing the main shaft mechanism has a first rotating part, and the outer edges of both sides of the first rotating part have arc surfaces , the main shaft mechanism has a circular arc part that is rotatably matched with the arc surface, and the main shaft mechanism is rotationally connected with the main shaft mechanism through the first rotating part;

The other end of the oscillating member has a second rotating part, and the second rotating part is rotatably connected with the connecting member.
The hinge assembly according to any one of claims 1-11, wherein each of the rotating mechanisms further comprises: at least one linkage, one end of the linkage is connected to the main shaft mechanism in rotation, and the linkage The other end of the support member rotates.
The hinge assembly according to claim 12, wherein the support member has an arc-shaped track groove, and the linkage member and the support member are rotatably connected to each other through the cooperation of cylindrical pins and the arc-shaped track groove.
The hinge assembly according to claim 13, wherein one end of the linkage member has a first gear, and the gear is connected to the main shaft mechanism through a rotating shaft in rotation, and there are two mutually meshing gears in the main shaft mechanism. A second gear, the second gear meshes with the first gear.
The hinge assembly according to any one of claims 1-14, wherein the supporting member has a plurality of virtual shafts, the connecting member has arc-shaped grooves matching with the virtual shafts, and the supporting member Rotationally connected with the connecting piece through the cooperation of the virtual shaft and the arc groove.
A foldable electronic device, characterized by comprising at least: a first structural member, a second structural member and the hinge assembly according to any one of claims 1-15;

The first structural member and the second structural member are respectively located on both sides of the hinge assembly, and the first structural member and the second structural member are respectively fixedly connected to the connectors in the hinge assembly;

And, it also includes: a battery cover and a foldable first display screen; the battery cover and the first display screen are respectively located on both sides of the hinge assembly, the first structural member and the second structural member surface.
The foldable electronic device according to claim 16, further comprising: a second display screen, the first display screen being located on one of the hinge assembly, the first structural member and the second structural member On the side surface, the second display screen and the battery cover are respectively located on the other side surfaces of the first structural component and the second structural component.