CN115480618A

CN115480618A - Hinge assembly and foldable electronic device

Info

Publication number: CN115480618A
Application number: CN202110663650.4A
Authority: CN
Inventors: 李云勇; 姜文杰; 徐正一; 王岗超; 马春军; 陈一阳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-12-16
Also published as: WO2022262477A1

Abstract

The embodiment of the application provides a hinge assembly and a foldable electronic device, wherein the hinge assembly is provided with a linear sliding groove on one of a supporting piece and a swinging piece, and a sliding piece is arranged on the other one of the supporting piece and the swinging piece, so that the high-pair matching of a cylindrical pin and an arc-shaped track groove between the supporting piece and a gear connecting rod is replaced by the low-pair matching of the linear sliding groove and the sliding piece between the supporting piece and the swinging piece, thus the virtual position between the sliding groove and the sliding piece is reduced, the angle control precision of the supporting piece is higher, and the supporting piece moves in place in the unfolding state and the folding state. In addition, the swinging piece is a passive stressed part, so the movement process is stable, and the movement of the supporting piece is more stable when the supporting piece is attached to the swinging piece.

Description

Hinge assembly and foldable electronic equipment

Technical Field

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

Background

With the continuous development of mobile devices such as mobile phones and the like, users have more and more strong requirements on large-screen mobile phones, but the large-screen mobile phones have a significant problem of inconvenience in carrying, so that the foldable-screen mobile phones with the stretchable and deformable screen become a main direction for improving the carrying convenience. In order to meet the differentiation requirements of different users, various folding mobile phones with screen inward folding and screen outward folding shapes are produced.

At present, a foldable mobile phone generally comprises two structural members, wherein the two structural members are connected through a hinge assembly, so that the two structural members can rotate relatively, and then the two structural members can be mutually overlapped or unfolded. In order to better support the foldable display screen and ensure that the foldable display screen is not excessively stretched and extruded in the folding process, the hinge assembly generally comprises a main shaft mechanism and rotating mechanisms positioned on two sides of the main shaft mechanism, each rotating mechanism comprises a support plate, a linkage piece and a connecting piece, the linkage pieces are connected with the main shaft mechanism and the connecting pieces, the connecting pieces are connected with the structural pieces and the support plates, and the support plates are in rotating fit with the arc-shaped track grooves through cylindrical pins.

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

Disclosure of Invention

The embodiment of the application provides a hinge assembly and a foldable electronic device, which realizes the stable movement process of a supporting mechanism of the electronic device in the unfolding or folding process, ensures the higher control precision of the angle of the supporting mechanism, and enables the foldable electronic device to move in place in the unfolding or folding working states.

A first aspect of embodiments of the present application provides a hinge assembly, including:

the main shaft mechanism and the two rotating mechanisms are positioned on two sides of the main shaft mechanism and are rotationally connected 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 piece is arranged close to the spindle mechanism, the connecting piece is positioned at one end of the supporting piece, which is far away from the spindle mechanism, and the connecting piece is connected with the supporting piece;

one end of the swinging piece is rotationally connected with the main shaft mechanism, and the other end of the swinging piece is rotationally connected with the connecting piece;

one of the swinging piece and the supporting piece is provided with a linear sliding groove, and the other of the swinging piece and the supporting piece is provided with a sliding piece matched with the sliding groove, so that the sliding piece moves in the sliding groove in the swinging process of the swinging piece.

According to the hinge assembly provided by the embodiment of the application, the swinging piece is included, one of the supporting piece and the swinging piece is provided with the linear sliding groove, and the other one of the supporting piece and the swinging piece is provided with the sliding piece, so that the high pair of matching between the cylindrical pin between the supporting piece and the gear connecting rod and the arc-shaped track groove is replaced by the low pair of matching between the linear sliding groove between the supporting piece and the swinging piece and the sliding piece, and thus the virtual position between the sliding groove and the sliding piece is reduced, the angle control precision of the supporting piece is higher, and the supporting piece moves in place in the unfolding and folding states. In addition, the swinging piece is a passive stressed part, so the movement process is stable, and the movement of the supporting piece is more stable when the supporting piece is attached to the swinging piece. Therefore, the hinge assembly provided by the embodiment of the application realizes the stable movement process of the supporting mechanism in the unfolding or folding process, ensures higher control precision of the angle of the supporting mechanism, and enables the foldable electronic equipment to move in place in the unfolding or folding working states.

In a possible implementation manner, the supporting member is provided with at least two opposite sliding grooves, a part of the swinging member is located between the two sliding grooves, and the two side edges of the swinging member are respectively provided with the sliding members.

In a possible implementation manner, at least two opposite protruding blocks are arranged on one surface of the supporting piece, and the sliding groove is formed in each protruding block.

In a possible implementation manner, the sliding groove penetrates from the top end surface of the bump to the bottom end of the bump, and the sliding groove is inclined towards the connecting piece.

In a possible implementation, the sliding groove at least comprises two opposite and parallel plane groove walls and an end groove wall positioned between one ends of the two plane groove walls;

a notch for the sliding part to slide in is formed between the other ends of the two plane groove walls.

In a possible implementation manner, the sliding part has a first sliding plane and a second sliding plane respectively opposite to the two planar groove walls, and the extending directions of the first sliding plane and the second sliding plane intersect to form an included angle.

In a possible implementation manner, when the supporting member and the spindle mechanism are in the unfolded state, the second sliding plane is attached to one of the plane groove walls, and the first sliding plane forms a first included angle with the other plane groove wall;

when the supporting piece and the main shaft mechanism are in a folded state, the first sliding plane is attached to the other plane groove wall, and the second sliding plane forms a second included angle with one plane groove wall.

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

In a possible implementation manner, one end of the wedge block facing the groove bottom of the sliding groove is an arc-shaped surface, and the end groove wall of the sliding groove is an arc-shaped wall matched with the arc-shaped surface.

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

In a possible implementation manner, one end of the swinging piece facing the main shaft mechanism is provided with a first rotating part, the outer edges of two sides of the first rotating part are provided with arc surfaces, an arc part in rotary fit with the arc surfaces is arranged in the main shaft mechanism, and the main shaft mechanism is in rotary connection with the main shaft mechanism through the first rotating part;

the other end of the swinging piece is provided with a second rotating part which is rotationally connected with the connecting piece.

In one possible implementation, each of the rotating mechanisms further includes: and one end of the linkage piece is rotationally connected with the main shaft mechanism, and the other end of the linkage piece is rotationally matched with the support piece.

In a possible implementation manner, the supporting part is provided with an arc-shaped track groove, and the linkage part and the supporting part are matched with the arc-shaped track groove through a cylindrical pin to realize rotary connection.

In a possible implementation manner, one end of the linkage piece is provided with a first gear, the gear is rotationally connected with the spindle mechanism through a rotating shaft, two second gears which are meshed with each other are arranged in the spindle mechanism, and the second gears are meshed with the first gear.

In a possible implementation manner, the supporting member has a plurality of virtual shafts, the connecting member has an arc-shaped groove matched with the virtual shafts, and the supporting member and the connecting member are rotationally connected through the matching of the virtual shafts and the arc-shaped groove.

A second aspect of the embodiments of the present application provides a foldable electronic device, at least including: the hinge assembly comprises a first structural component, a second structural component and the hinge assembly;

the first structural part and the second structural part are respectively positioned at two sides of the hinge assembly, and the first structural part and the second structural part are respectively fixedly connected with a connecting piece in the hinge assembly;

and, further comprising: the display screen comprises a battery cover and a foldable first display screen; the battery cover and the first display screen are respectively positioned on two side surfaces of the hinge assembly, the first structural member and the second structural member.

The folding electronic equipment that this application embodiment provided, through including above-mentioned hinge subassembly, like this, replace the high vice cooperation of cylindric lock and the arc orbit groove between support piece and the gear connecting rod for the straight line spout between support piece and the swinging member and the low vice cooperation of slider, like this, the virtual position between spout and the slider reduces for support piece's angle control precision is higher, and support piece is in the expansion and two states motion targets in place of folding. In addition, the swinging piece is a passive stressed part, so the movement process is stable, and the movement of the supporting piece is more stable when the supporting piece is attached to the swinging piece. Therefore, the foldable electronic equipment provided by the embodiment of the application realizes the stable movement process of the supporting mechanism in the unfolding or folding process of the electronic equipment, ensures higher control precision of the angle of the supporting mechanism, and enables the foldable electronic equipment to move in place in the unfolding or folding working states.

In one possible implementation manner, the method further includes: the first display screen is positioned on one side surface of the hinge assembly, the first structural member and the second structural member, and the second display screen and the battery cover are respectively positioned on the other side surface of the first structural member and the second structural member.

Drawings

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

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

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

fig. 4 is an exploded view of a foldable electronic device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram illustrating a hinge assembly of a foldable electronic device according to an embodiment of the present application in an unfolded state;

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

fig. 7 is a schematic structural diagram illustrating a hinge assembly of a foldable electronic device according to an embodiment of the present application, in which one of the rotation mechanisms is detached from the main shaft mechanism;

fig. 8 is an exploded view of one of the rotation mechanisms in the hinge assembly of the foldable electronic device according to an embodiment of the present disclosure;

FIG. 9 is a partial schematic view of the engagement between the support member and the gear link in the hinge assembly of a foldable electronic device;

fig. 10 is a schematic partially disassembled structure view of a swinging member and a supporting member of a hinge assembly of a foldable electronic device according to an embodiment of the present application;

fig. 11 is a schematic view of a detached structure of a swinging member and a supporting member in another direction in a hinge assembly of a foldable electronic device according to an embodiment of the present application;

fig. 12 is a schematic view of a swing member of a hinge assembly of a foldable electronic device according to an embodiment of the present application after the swing member is assembled on a supporting member;

fig. 13 is a schematic perspective view illustrating a swing member of a hinge assembly of a foldable electronic device according to an embodiment of the present disclosure;

fig. 14 is a schematic partial cutaway view of a longitudinal cross section of a hinge assembly at a pendulum for a foldable electronic device provided by an embodiment of the present application;

fig. 15 is another perspective view of a swing member in a hinge assembly of a foldable electronic device according to an embodiment of the present disclosure;

fig. 16 is a schematic diagram illustrating a disassembled structure of a connecting member and a supporting member in a hinge assembly of a foldable electronic device according to an embodiment of the present disclosure;

fig. 17 is a schematic partial cross-sectional view of a longitudinal cross-section of a hinge assembly at a connection member of a foldable electronic device provided by an embodiment of the present application;

fig. 18 is another exploded view of a pivoting mechanism in a hinge assembly of a foldable electronic device according to an embodiment of the present disclosure;

fig. 19 is a schematic perspective view illustrating a linkage in a hinge assembly of a foldable electronic device according to an embodiment of the present application;

fig. 20 is a schematic structural view of a hinge assembly of a foldable electronic device according to an embodiment of the present application after a linkage is assembled on a support;

fig. 21 is a schematic partial cross-sectional view of a hinge assembly of a foldable electronic device in a longitudinal cross section at a linkage according to an embodiment of the present application.

Description of reference numerals:

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

21-a first structural member; 211-a first metal middle plate; 212-a first bezel; 22-a second structural member; a second metal middle plate-221; a second rim-222;

30-a hinge assembly; 31-a spindle mechanism; 311-the outer shaft; 3112-arc portion; 312-an inner shaft; 313. 314-a second gear; 32-a rotation mechanism;

321-a connector; 3211-an arc-shaped groove;

322-a pendulum; 3221-a slider; 3222 a-a first sliding plane; 3222 b-a second sliding plane; 3223-an arc surface;

323-a support member; 3231-runner; 3232-arc track groove; 3233-bump; 3234a, 3234 b-planar slot walls; 3235-virtual axis;

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

325-pin shaft; 326-cylindrical pins;

40-cell cover.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application, which will be described in detail below with reference to the accompanying drawings.

The foldable electronic device provided in the embodiment of the present application may include, but is not limited to, a foldable fixed terminal or a mobile terminal, such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a touch television, an intercom, a netbook, a POS machine, a Personal Digital Assistant (PDA), a wearable device, and a virtual reality device.

In the embodiment of the present application, a mobile phone is taken as an example of the foldable electronic device, and the mobile phone is a foldable mobile phone with a screen folded inwards and an external screen added.

The hinge assembly and the foldable electronic device provided by the embodiment of the present application are described in detail below by taking the foldable electronic device as a folding screen mobile phone as an example.

Referring to fig. 1 and 2, the folding screen mobile phone may include at least: the hinge assembly comprises 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 respectively positioned at two sides of the hinge assembly 30, and the first structural member 21 and the second structural member 22 are respectively fixedly connected with the hinge assembly 30. Specifically, the first structural member 21 and the second structural member 22 are fixedly connected to connectors in the hinge assembly 30, respectively.

It should be noted that the first structural member 21 and the second structural member 22 may be fixedly connected to the connecting member by welding, bonding, or locking with screws, respectively.

When the first structural member 21 and the second structural member 22 are rotated to be stacked with each other, the foldable screen mobile phone is in a folded state, and conversely, when the first structural member 21 and the second structural member 22 are rotated from the stacked state to be away from each other until the first 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 in the same plane), the foldable screen mobile phone is in an unfolded state. The unfolding process is from the folding state to the unfolding state, and the folding process is from the unfolding state to the folding state.

In addition, it should be noted that the number of the first structural member 21 and the second structural member 22 may be one, so that the foldable screen mobile phone may be folded into two layers, specifically, as shown in fig. 1, the foldable screen mobile phone may include only one first structural member 21, one second structural member 22, and a hinge assembly 30 for connecting the first structural member 21 and the second structural member 22, and the first structural member 21 and the second structural member 22 are rotated to be stacked, so that the foldable electronic device is in a two-layer form.

Alternatively, the number of the first structural member 21 and the second structural member 22 may be multiple (not shown), and a hinge assembly 30 for connecting the first structural member 21 and the second structural member 22 is provided between the adjacent first structural member 21 and the second structural member 22, so that the foldable electronic device can be folded into multiple layers. For example, the foldable electronic device may include two second structural members 22, a first structural member 21, and two hinge assemblies 30 for connecting the first structural member 21 and the second structural member 22, where the two second structural members 22 are located at two sides of the first structural member 21 and are respectively rotatably connected to the first structural member 21 through the hinge assemblies 30, one of the second structural members 22 may be mutually rotated to be stacked with the first structural member 21, and the other second structural member 22 may also be rotated to be stacked with respect to the first structural member 21, so that the foldable electronic device may be in a three-layer folded configuration, and 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 in the embodiment of the present application may further include: the foldable first display screen 10, wherein the foldable first display screen 10 may be disposed on the surfaces of the hinge assembly 30, the first structure 21, and the second structure 22. When the first structural member 21 and the second structural member 22 are folded, the foldable first display screen 10 is folded and attached between the first structural member 21 and the second structural member 22, and when the first structural member 21 and the second structural member 22 are unfolded, the foldable first display screen 10 is also unfolded.

In practical applications, the foldable first display screen 10 may be adhered to the surfaces of the hinge assembly 30, the first structure 21 and the second structure 22 to ensure that at least a portion of the foldable first display screen 10 is stably covered on the inner side of the hinge assembly 30, thereby improving 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 region 11, a second display region 12, and a third display region 13 located at the first display region 11 and the second display region 12, wherein the first display region 11 may be located at a surface of the first structural member 21, the second display region 12 may be located at a surface of the second structural member 22, and the third display region 13 is located at a surface of the hinge assembly 30.

Of course, in some embodiments, the foldable electronic device may also be a notebook computer, and the notebook computer may also include a first structural component 21 and a second structural component 22, where the first structural component 21 and the second structural component 22 can rotate towards each other to be stacked on each other, so that the notebook computer is in a folded state, and conversely, when the first structural component 21 and the second structural component 22 rotate away from each other from the stacked state to be unrotatable, 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 and the like, and the partially foldable first display screen 10 on the second structural member 22 can be used as a virtual keyboard.

Referring to fig. 2 and 3, the electronic device may further include: the second display screen 10a, the second display screen 10a and the first display screen may be respectively located at two 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 at two sides of the second structural member 22, so that, as shown in fig. 3, when the electronic device is in a folded state, the second display screen 10a may be used as an external screen. Of course, in some examples, the second display screen 10a may not be provided.

The second display screen 10a may be a liquid crystal display screen, and 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, the method may further include: the battery cover 40, and the first display region 11 of the first display screen 10 may be respectively located at both sides of the first structural member 21.

In the embodiment of the present application, referring to 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 a first frame 212 surrounding an outer edge of the first metal middle plate 211, and the second structural member 22 may include a second metal middle plate 221 and a second frame 222 surrounding an outer edge of the second metal middle plate 221. The hinge assembly 30 is fixedly coupled to the first and second metal

middle plates

211 and 221, respectively.

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

As shown in connection with fig. 5, the hinge assembly 30 may include: a main shaft mechanism 31, and two rotating mechanisms 32 which are positioned at two sides of the main shaft mechanism 31 and are connected with the main shaft mechanism 31 in a rotating way. Wherein, referring to fig. 5, the two rotating mechanisms 32 can be symmetrically arranged with respect to the main shaft mechanism 31. The two rotating mechanisms 32 can rotate relative to the main shaft mechanism 31 along two dotted arrows in fig. 5, for example, referring to fig. 6, when the two rotating mechanisms 32 are in the folded state, the two rotating mechanisms 32 can face the face, and when the two rotating mechanisms 32 are 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 rotatably connected with the spindle mechanism 31, the rotating mechanism 32 can be detachably connected with the spindle mechanism 31.

Referring to fig. 8, each of the rotating mechanisms 32 may include: the connecting member 321 and the supporting member 323, the supporting member 323 is used for supporting the third display area 13 of the first display screen 10, one end of the connecting member 321 in each rotating mechanism 32 is fixedly connected to the first structural member 21 and the second structural member 321, the supporting member 323 is disposed near the spindle mechanism 31, the connecting member 321 is located at one end of the supporting member 323 away from the spindle mechanism 31, and the connecting member 321 is rotatably connected to the supporting member 323.

In the embodiment of the present application, the number of the connecting members 321 may be one, or may be multiple, for example, in fig. 8, the number of the connecting members 321 in each rotating mechanism is three, and three connecting members 321 may be arranged at intervals along the axial direction of the spindle mechanism 31. Among them, the support 323 may be a support plate that extends along the axial direction of the spindle mechanism 31.

In some researches, referring to fig. 9, the other end of the connecting member 321 is rotatably connected to one end of a gear link 322a, and the other end of the gear link 322a is rotatably connected to the main shaft mechanism 31, so as to ensure higher angle control accuracy of the support 323 and smooth operation during folding and unfolding, referring to fig. 9, a cylindrical pin 322b is provided on the gear link 322a, an arc-shaped track groove 323a is provided on the support 323, and the cylindrical pin 322b moves in the arc-shaped track groove 323a along with rotation of the rotating mechanism 32, but when the cylindrical pin 322b moves in the arc-shaped track groove 323a, due to line contact between the cylindrical pin 322b and the arc-shaped track groove 323a, the cylindrical pin 322b is in high-order fit with the arc-shaped track groove 323a, so that the support 323 has a large number of virtual positions between the cylindrical pin 322b and the arc-shaped track groove 323a during movement, which results in poor control accuracy of the rotation angle of the support 323 when the cylindrical pin 322b drives the support 323 during movement. In addition, there is a cam engagement between the gear link 322a and the spindle mechanism 31, causing the support 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 providing the linear sliding groove 3231 on one of the supporting member 323 and the swinging member 322, and providing the sliding member 3221 on the other, the high-order fit between the cylindrical pin 322b and the arc-shaped track groove 323a is replaced by the low-order fit between the linear sliding groove 3231 and the sliding member 3221, so that the virtual position between the sliding groove 3231 and the sliding member 3221 is reduced, the angle control accuracy of the supporting member 323 is higher, the supporting member 323 moves in place in the unfolding and folding states, and in addition, the swinging member 322 is a passively stressed part, so the moving process is stable, and thus, when the supporting member 323 is attached to the swinging member 322, the movement of the supporting member 323 is also more stable. Therefore, the foldable electronic equipment provided by the embodiment of the application realizes the stable movement process of the supporting mechanism in the unfolding or folding process of the electronic equipment, ensures higher control precision of the angle of the supporting mechanism, and enables the foldable electronic equipment to move in place in the unfolding or folding working states.

For example, referring to fig. 10, the rotation mechanism 32 further includes: and the swinging piece 322, one end of the swinging piece 322 is rotatably connected with the main shaft mechanism 31, and the other end of the swinging piece 322 is rotatably connected with the connecting piece 321.

One of the support member 323 and the swinging member 322 is provided with a linear slide groove 3231, and the other is provided with a slider 3221, for example, as shown in fig. 10, the support member 323 is provided with a linear slide groove 3231, the swinging member 322 is provided with a slider 3221, and the slider 3221 moves in the slide groove 3231 during swinging of the swinging member 322. Since the sliding groove 3231 is linear and non-arc-shaped, when the sliding element 3221 moves in the sliding groove 3231, the sliding element 3221 moves along a linear groove wall of the sliding groove 3231, so that a low-pair motion between the sliding element 3221 and the sliding groove 3231 is realized, so that an imaginary position of the sliding element 3221 is reduced when the sliding element 3221 moves in the sliding groove 3231, in the folding and unfolding processes, the angle control precision of the supporting element 323 is higher, in addition, the swinging element 322 is a passive stressed part, the moving process is stable, and when the supporting element 323 is attached to the swinging element 322, the movement is also more stable.

Of course, in some examples, the swinging member 322 may be provided with the sliding groove 3231, and the supporting member 323 may be provided with the sliding member 3221.

In a possible implementation, referring to fig. 10, the support member 323 is provided with at least two opposite sliding grooves 3231, and a portion of the swinging member 322 is located between the two sliding grooves 3231 (see fig. 12), for example, one end of the swinging member 322 is located in the main shaft mechanism 31, and the other end of the swinging member 322 passes through a space between the two sliding grooves 3231 and is connected to the connecting member 321. As shown in fig. 10, the swinging member 322 has sliding members 3221 at its both side edges.

As shown in fig. 10, at least two opposite protrusions 3233 are disposed on one surface of the supporting member 323, and a sliding groove 3231 is disposed on the protrusion 3233. The sliding groove 3231 extends from the top end surface of the projection 3233 to the bottom end of the projection 3233, for example, the top end of the sliding groove 3231 is open, and the slider 3221 can slide into the sliding groove 3231 from the open position of the top end. The bottom end of the slide groove 3231 extends to the surface of the support 323. In the present embodiment, in order to facilitate the movement of the slider 3221 in the slide groove 3231 when the swinging member 322 rotates, the slide groove 3231 is inclined toward the connecting member 321. Referring to fig. 10, the sliding groove 3231 is an inclined linear sliding way, an included angle of less than 90 ° is formed between the sliding groove 3231 and the supporting member 323, and the size of the included angle is specifically set according to actual requirements.

The protrusion 3233 and the supporting element 323 can be an integrated structure.

Referring to fig. 10 and 11, the slide groove 3231 includes at least two opposite and parallel planar groove walls, for example, a planar groove wall 3234b (see fig. 10) and a planar groove wall 3234a (see fig. 11), a groove opening for the slide 3221 is formed between the other ends of the planar groove wall 3234b and the planar groove wall 3234a, and the slide groove 3231 further includes: and an end slot wall (i.e., the slot base opposite the top slot) located between the planar slot wall 3234b and one end of the planar slot wall 3234 a.

By providing the slot 3231 with two opposing planar slot walls, it is ensured that the two slot walls of the slot 3231 are linear, and thus the virtual position of the slider 3221 is reduced when moving on the planar slot walls, which ensures a higher accuracy of the angular control of the support 323.

As shown in fig. 10 and 11, the slider 3221 has a first sliding plane 3222a (see fig. 10) and a second sliding plane 3222b (see fig. 11) respectively opposite to the two planar groove walls, and the extending directions between the first sliding plane 3222a and the second sliding plane 3222b intersect to form an included angle, for example, the first sliding plane 3222a and the second sliding plane 3222b are not parallel. This ensures that the oscillating piece 322 can move in the slide groove 3231 during the rotation.

In the embodiment of the present application, referring to fig. 13, one end of the swinging member 322 facing the main shaft mechanism 31 has a first rotating portion 3224, two outer edges of the first rotating portion 3224 have arc surfaces 3225, the main shaft mechanism 31 has an arc portion 3112 (see fig. 14) rotatably engaged with the arc surfaces 3225, and the main shaft mechanism 31 is rotatably connected to the main shaft mechanism 31 through the first rotating portion 3224; the other end of the swinging member 322 has a second rotating portion 3226, and the second rotating portion 3226 is rotatably connected to the connecting member 321 through a pin 325 (see fig. 14).

For example, referring to fig. 14, the spindle mechanism 31 may include: an inner shaft 312 and a plurality of outer shafts 311, the inner shaft 312 being connected to the outer shafts 311, wherein the first rotating portion 3224 of the oscillating member 322 is rotatably connected to the spindle mechanism 31 by the inner shaft 312 being restricted to the outer shafts 311, for example, a circular arc portion 3112 is defined between the inner shaft 312 and the outer shafts 311, and the first rotating portion 3224 of the oscillating member 322 is rotatable around the circular arc portion 3112.

Referring to fig. 14, when the supporting member 323 and the spindle mechanism 31 are in the unfolded state (i.e. the electronic device is in the unfolded state), the second sliding plane 3222b abuts against the planar slot wall 3234b, and the first sliding plane 3222a forms a first included angle a1 with the planar slot wall 3434 a.

When the supporting member 323 and the main shaft mechanism 31 are in a folded state (i.e., the electronic device is in a folded state), the first sliding plane 3222a abuts against the planar groove wall 3234a, and the second sliding plane 3222b forms a second included angle a2 with the planar groove wall 3234 b. Thus, when the electronic device is in the unfolded state, the second sliding plane 3222b can abut against the planar groove wall 3234b, so that the support member 323 is ensured to move in place during the unfolding motion, and when the electronic device is in the folded state, the first sliding plane 3222a abuts against the other planar groove wall 3234a, so that the support member 323 is ensured to move in place during the folding motion, and the control accuracy of the angle of the support member 323 is higher.

In the embodiment of the present application, referring to fig. 14, the sliding member 3221 is a wedge, and a thick end of the wedge (i.e., an end of the wedge with a larger thickness) faces a groove bottom of the sliding groove 3231.

In the embodiment of the present application, referring to fig. 13, an end of the wedge facing the bottom of the sliding groove 3231 is an arc-shaped surface 3223, referring to fig. 14, an end groove wall of the sliding groove 3231 is an arc-shaped wall matched with the arc-shaped surface, so as to ensure that when the electronic device is in a folded state, the arc-shaped surface of the sliding member 3221 is in surface contact with the arc-shaped wall of the sliding groove 3231, and therefore, a problem of large abrasion when some positions are in point contact is not easy to occur.

Of course, in some examples, as shown in fig. 15, the slider 3221 may also be a cylinder. In this way, the cylinder can move along two planar slot walls of the sliding slot 3231, and compared with the arc-shaped track slot 323a in fig. 9, in the embodiment of the present application, since the sliding slot 3231 is linear, when the sliding member 3221 is a cylinder, the movement of the cylinder in the sliding slot 3231 can still ensure that the angle control accuracy of the supporting member 323 is improved.

In the embodiment of the present application, when the connecting member 321 is rotatably engaged with the supporting member 323, as shown in fig. 16, the supporting member 323 has a plurality of virtual shafts 3235, the connecting member 321 has an arc-shaped groove 3211 engaged with the virtual shafts 3235, and the supporting member 323 and the connecting member 321 are rotatably connected by the virtual shafts 3235 being engaged with the arc-shaped groove 3211. For example, referring to fig. 17, when the electronic device is in the unfolded state, one end of the virtual shaft 3235 of the support element 323 is located in the arc-shaped groove 3211 of the connection element 321, and there is additional space in the arc-shaped groove 3211, when the electronic device is in the folded state, the virtual shaft 3235 of the support element 323 rotates in the arc-shaped groove 3211 of the connection element 321, and the connection element 321 and the support element 323 are rotatably coupled through the rotation between the arc-shaped groove 3211 and the virtual shaft 3235, so that the movement of the support element 323 is attached to the connection element 321 and the swinging element 322, and the swinging element 322 is a passive stressed element, and moves smoothly, so that the support element 323 attached to the connection element 321 and the swinging element 322 moves smoothly.

In the embodiment of the present application, referring to fig. 18, each rotating mechanism 32 further includes: at least one linkage member 324, it should be noted that only one linkage member 324 is shown in fig. 18, in the actual assembly, the number of the linkage members 324 may be the same as the number of the connection members 321, for example, when the number of the connection members 321 is two, the number of the linkage members 324 may also be two.

One end of the link 324 is rotatably connected to the spindle mechanism 31, and the other end of the link 324 is rotatably engaged with the support 323. For example, referring to fig. 18, the support 323 has an arc-shaped track 3232, referring to fig. 19, the linkage 324 has a pin hole 3243, referring to fig. 20, the linkage 324 and the support 323 are rotatably connected by a cylindrical pin 326 passing through the pin hole 3243 and the arc-shaped track 3232.

By providing at least one linkage member 324 and the arcuate track 3232, redundant control of the movement of the strut 323 is achieved, reducing the angular offset of the strut 323 and ensuring accuracy of angular control of the strut 323.

Referring to fig. 21, one end of the link 324 has a first gear 3241, the first gear 3241 is rotatably connected to the spindle mechanism 31 through a rotating shaft 3244, and the spindle mechanism 31 has two second gears engaged with each other, such as a second gear 313 and a second gear 314, the second gear 313 is engaged with the first gear 3241, and the second gear 314 is engaged with the first gear 3241 of the link 324 in the other rotating mechanism 32.

It should be noted that, referring to fig. 21, a part of the outer surface of first toothed wheel 3241 is provided with a tooth structure 3242, but in some examples, the entire outer surface of first toothed wheel 3241 may also be provided with a tooth structure 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 rotation. 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 the two sides achieve the purpose of synchronous rotation through the second gear 313 and the second gear 314, so that the rotating parts on the two sides of the main shaft mechanism 31 can achieve synchronous rotation.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Reference throughout this specification to apparatus or components, in embodiments or applications, means or components must be constructed and operated in a particular orientation and therefore should not be construed as limiting the present embodiments. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge assembly, comprising:

the device comprises a main shaft mechanism and two rotating mechanisms which are positioned on two sides of the main shaft mechanism and are rotationally connected with the main shaft mechanism;

2. The hinge assembly as claimed in claim 1, wherein said supporting member is provided with at least two opposite said sliding grooves, a portion of said swinging member is located between said two sliding grooves, and both side edges of said swinging member are provided with said sliding members, respectively.

3. The hinge assembly of claim 2, wherein at least two opposing projections are provided on one side of the support member, the projections having the slots formed therein.

4. The hinge assembly of claim 3, wherein the sliding groove penetrates from a top end surface of the projection to a bottom end of the projection, and the sliding groove is inclined toward the connecting member.

5. The hinge assembly of any of claims 1-4, wherein said slot comprises at least two opposing and parallel planar slot walls, and an end slot wall located between one end of said two planar slot walls;

6. The hinge assembly of claim 5, wherein the slider has a first sliding plane and a second sliding plane respectively opposing the two planar slot walls, and the first sliding plane and the second sliding plane intersect in an included angle.

7. The hinge assembly of claim 6, wherein said second sliding plane abuts one of said planar slot walls and said first sliding plane forms a first included angle with the other of said planar slot walls when said support member and said spindle mechanism are in a deployed state;

8. The hinge assembly of claim 6 or 7, wherein the slider is a wedge, the thick end of the wedge facing the bottom of the slot.

9. The hinge assembly of claim 8, wherein an end of the wedge facing the bottom of the slot is an arcuate surface and the end slot wall of the slot is an arcuate wall that mates with the arcuate surface.

10. A hinge assembly according to any one of claims 1 to 5 wherein the slider is a cylinder.

11. The hinge assembly as claimed in any one of claims 1 to 10, wherein the swinging member has a first rotating portion at an end facing the spindle mechanism, the first rotating portion has an arc surface at two outer edges thereof, the spindle mechanism has an arc portion therein, the arc portion is rotatably engaged with the arc surface, and the spindle mechanism is rotatably connected to the spindle mechanism through the first rotating portion;

the other end of the swinging piece is provided with a second rotating part, and the second rotating part is rotatably connected with the connecting piece.

12. The hinge assembly of any of claims 1-11, wherein each of said rotation mechanisms further comprises: and one end of the linkage piece is rotationally connected with the main shaft mechanism, and the other end of the linkage piece is rotationally matched with the supporting piece.

13. The hinge assembly of claim 12, wherein the support member has an arcuate track and the linkage member is pivotally coupled to the support member by a cylindrical pin engaging the arcuate track.

14. The hinge assembly of claim 13, wherein the linkage member has a first gear at one end thereof, the gear being rotatably connected to the spindle mechanism via a shaft, and wherein the spindle mechanism has two second gears therein that intermesh with the first gear.

15. The hinge assembly of any one of claims 1-14, wherein said support member includes a plurality of virtual shafts, said coupling member includes an arcuate slot that engages said virtual shafts, and said support member and said coupling member are rotatably coupled by engagement of said virtual shafts with said arcuate slots.

16. A foldable electronic device, comprising at least: a first structural member, a second structural member and a hinge assembly as claimed in any one of claims 1 to 15;

17. The foldable electronic device of claim 16, further comprising: the first display screen is positioned on one side surface of the hinge assembly, the first structural member and the second structural member, and the second display screen and the battery cover are respectively positioned on the other side surface of the first structural member and the second structural member.