Rotating shaft structure and folding terminal

Abstract

The embodiment of the invention provides a rotating shaft structure and a folding terminal. The opening and closing hand feeling can be improved. The rotating shaft structure is applied to the outward folding type terminal, and the outward folding type terminal comprises a first machine body, a second machine body and a rotating shaft structure connected with the first machine body and the second machine body. The rotating shaft structure comprises a shaft cover; the two connecting pieces are located on the two sides of the shaft cover and used for being connected with the first machine body and the second machine body respectively. The rotating mechanism is rotationally connected with the shaft cover, is in sliding and rotating connection with the connecting piece, and controls the movement of the connecting piece; the synchronizing mechanism is rotationally connected with the shaft cover, is in sliding and rotating connection with the connecting pieces, and is used for synchronizing the rotation of the two connecting pieces; the multiple damping mechanisms comprise convex-concave wheel damping mechanisms and / or flexible damping mechanisms; a first spring of the convex-concave wheel damping mechanism is compressed to generate axial extrusion force which acts between the concave wheel and the rotating cam so as to generate damping force; a flexible beam of the compliant damping mechanism is compressed to generate a damping force.

Description

[0001] This application is based on a divisional application with application number 202310165524.5, application date February 16, 2023, and invention name “Hinge structure and foldable terminal”. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the technical field of electronic equipment, and in particular to a hinge structure and a foldable terminal. Background Art

[0003] With the continuous development of display technology, foldable terminals (such as foldable mobile phones) have gradually become a development trend of future mobile electronic products. When unfolded, foldable terminals can obtain a larger display area to improve the visual effect, and when folded, they can obtain a smaller volume, which is convenient for users to carry. Therefore, they are favored by more and more users.

[0004] The structure for realizing the unfolding or folding of the foldable terminal is a rotating shaft structure, which includes a damping mechanism, a synchronization mechanism, etc. During the unfolding or folding process of the foldable terminal, the damping mechanism provides a damping force to realize the opening and closing feel. However, the existing damping mechanism has problems such as small damping force and poor opening and closing feel. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a hinge structure and a foldable terminal, which can improve the damping force of the hinge structure, realize the opening and closing feel, and have a simple structure and low cost.

[0006] In a first aspect, an embodiment of the present application provides a shaft structure, which is applied to an outward-folding foldable terminal. The outward-folding foldable terminal includes a first body and a second body, and a shaft structure connecting the first body and the second body, wherein the shaft structure includes: a shaft cover; two connecting members, located on both sides of the shaft cover, and used to be connected to the first body and the second body respectively; a rotating mechanism, which is rotatably connected to the shaft cover and is slidably and rotatably connected to the connecting member, and is used to control the movement of the connecting member; a synchronization mechanism, which is rotatably connected to the shaft cover and is slidably and rotatably connected to the connecting member, and is used to synchronize the rotation of the two connecting members; multiple damping mechanisms, the multiple damping mechanisms include a convex-concave wheel damping mechanism and / or a compliant damping mechanism; the convex-concave wheel damping mechanism includes a pin, a concave wheel, a first spring and at least two damping swing arms, the pin is fixedly connected to the shaft cover, and the concave wheel and the first spring are both sleeved on the pin. The damping swing arm includes a rotating cam which is sleeved on the pin shaft and is adjacent to and in contact with the cam, and a swinging member located on one side of the rotating cam. The swinging members of the two damping swing arms are respectively connected to the two connecting members for sliding and rotation. When the swinging member and the connecting member slide and rotate, the first spring is compressed and generates an axial extrusion force, which acts between the cam and the rotating cam to generate a damping force. The flexible damping mechanism includes two flexible members, and the flexible members include a flexible swing arm and a flexible unit. The flexible units of the two flexible members are respectively fixed on the two connecting members, one end of the flexible swing arm is connected to the shaft cover for rotation, and the other end of the flexible swing arms of the two flexible members are connected to the connecting members for sliding and rotation. The flexible unit includes a connecting rod and a flexible beam, and the flexible swing arm is fixedly connected to the connecting rod. When the other end of the flexible swing arm slides and rotates with the connecting member, the connecting rod is driven to move, and the flexible beam is compressed to generate a damping force.

[0007] The multiple damping mechanisms in the outward folding foldable terminal include a convex-concave wheel damping mechanism and / or a compliant damping mechanism, which can increase the damping force of the damping mechanism, and the damping mechanism can not only provide a flattening force, but also provide a closing force, adjust the opening and closing feel of the rotating shaft structure, and facilitate user experience. When the multiple damping mechanisms are multiple convex-concave wheel damping mechanisms, the problem of high cam surface pressure and severe wear when there is a single damping mechanism can be avoided. When the multiple damping mechanisms include a compliant damping mechanism, it is helpful to maintain the hovering, unfolding, and closing states of the rotating shaft structure. The damping mechanism has a simple structure and low cost.

[0008] In some possible implementations, the multiple damping mechanisms also include a lateral damping mechanism; the lateral damping mechanism includes two lateral members, the lateral members include a lateral swing arm and a lateral rotating part, the lateral rotating part is rotatably connected to the shaft cover, and the lateral swing arms of the two lateral members are respectively slidably connected to the two connecting members; a support member and a roller rotatably connected to the support member are provided in the lateral swing arm, and at least one second spring is sleeved on the support member, and opposite ends of the second spring are respectively fixedly connected to the support member and the roller; when the angle of the plane where the two connecting members are located is within a preset angle range, the roller contacts the side wall of the shaft cover, the shaft cover squeezes the roller, and the second spring is compressed to generate a damping force.

[0009] The setting of the lateral damping mechanism improves the unfolding retention force of the shaft structure through the force between the roller and the shaft cover when the shaft structure is in the unfolded state, which is beneficial to the user experience, and further improves the opening and closing feel together with the convex and concave wheel damping mechanism and / or the flexible damping mechanism.

[0010] Exemplarily, the preset angle range may be, for example, 90°-180°, 120°-180°, or 150°-180°.

[0011] In some possible implementations, the rotating mechanism includes a main swing arm group; the main swing arm group includes two main swing arms respectively arranged on both sides of the shaft cover; the main swing arm includes a first main swing part and a second main swing part which are fixedly connected, the connecting part is provided with a first connecting groove which is adapted to the second main swing part, the main swing arm is rotatably connected to the connecting part through the second main swing part, the shaft cover is provided with a first shaft cover groove which is adapted to the first main swing part, the main swing arm is rotatably connected to the shaft cover through the first main swing part, the position of the shaft cover remains unchanged, the first main swing parts of the two main swing arms in the main swing arm group rotate relative to the shaft cover, so as to drive the two connecting parts to rotate through the second main swing parts of the two main swing arms in the main swing arm group.

[0012] The main swing arm provided in the present application has a simple structure, reduces the difficulty of preparation, and has low cost.

[0013] In some possible implementations, based on the main swing arm comprising a first main swing member and a second main swing member fixedly connected, the cross-sectional shapes of the first main swing member and the second main swing member are both arc-shaped, thereby improving the bending reliability of the entire machine.

[0014] In some possible implementations, the rotating mechanism also includes a secondary swing arm group; the secondary swing arm group includes two secondary swing arms arranged on both sides of the shaft cover, the secondary swing arm includes a swing arm rotating part and a sliding part; the swing arm rotating part is fixed to the side wall of the sliding part, and a first protrusion is provided on the sliding part, and at least one swing arm slide groove is formed between the first protrusion and the sliding part; a second connecting slide groove adapted to the sliding part is provided on the connecting part, and a first convex strip adapted to the swing arm slide groove is formed on the side wall of the second connecting slide groove, the secondary swing arm is slidingly connected to the connecting part through the swing arm slide groove, and a second shaft cover slide groove adapted to the swing arm rotating part is provided on the shaft cover, the secondary swing arm is rotatably connected to the shaft cover through the swing arm rotating part, the position of the shaft cover remains unchanged, and the swing arm rotating parts of the two secondary swing arms in the secondary swing arm group rotate relative to the shaft cover to drive the two connecting parts to rotate through the sliding parts of the two secondary swing arms in the secondary swing arm group.

[0015] The auxiliary swing arm provided in the present application has a simple structure, reduces the difficulty of preparation, and has low cost.

[0016] In some possible implementations, the synchronization mechanism includes two synchronization parts, and the synchronization parts include a synchronization swing arm and gears. The gears of the two synchronization parts are meshed with each other, and the synchronization swing arms of the two synchronization parts are arranged on both sides of the two gears that are meshed with each other; the gears are rotatably connected to the shaft cover through the gear shaft, and a first boss is provided on both side walls of the synchronization swing arm away from the gear; a third connecting groove adapted to the synchronization swing arm is provided on the connecting part, and the side wall of the third connecting groove is partially recessed to form a first groove adapted to the first boss, and the first boss slides and rotates in the first groove, so that the synchronization mechanism is slidably and rotatably connected to the connecting part.

[0017] The synchronization mechanism provided in the present application has a simple structure, reduces the difficulty of preparation, has a low cost, and ensures the reliability of synchronization when the whole machine is bent.

[0018] In some possible implementations, the foldable terminal also includes a flexible screen, which is located on one side of the first body, the hinge structure and the second body; the hinge structure also includes a supporting door panel, which is fixedly connected to the rotating mechanism and rotates with the rotation of the rotating mechanism, and the supporting door panel is used to support the flexible screen.

[0019] The connection method of the supporting door panel is simple, and the flexible screen is supported by the supporting door panel to reduce screen stress and prevent the bending area of ​​the flexible screen from collapsing or falling and being damaged.

[0020] In some possible implementations, on the basis that the above-mentioned rotating shaft structure also includes a supporting door panel, when the main swing arm includes a first main swing member and a second main swing member, the first main swing member and the second main swing member are both provided with a fixing column, and the main swing arm is connected to the supporting door panel through the fixing column. That is, the connection of the supporting door panel can be achieved through the fixing column, the fixing method is simple, and there is no need to change other structures, which is conducive to the arrangement of other structures.

[0021] In some possible implementations, based on the above-mentioned pivot structure also including a supporting door panel, the material of the supporting door panel includes a super-strong polymer material, and the supporting door panel is integrally formed.

[0022] This arrangement improves the processing reliability and economy of the supporting door panel, and the formed supporting door panel is relatively flat, thereby improving the bearing capacity of the supporting door panel for the flexible screen and improving problems such as screen creases.

[0023] In some possible implementations, the pivot structure also includes a decorative door panel, which is fixedly connected to the rotating mechanism and rotates with the rotating mechanism. The decorative door panel is used to shield the rotating mechanism, the synchronization mechanism and / or the damping mechanism to protect the rotating mechanism, the synchronization mechanism and / or the damping mechanism and prevent the rotating mechanism, the synchronization mechanism and / or the damping mechanism from interfering with other structures in the terminal.

[0024] In some possible implementations, on the basis that the above-mentioned rotating shaft structure also includes a decorative door panel, when the auxiliary swing arm includes a swing arm rotating member and a sliding member, the decorative door panel is fixedly connected to the side of the sliding member away from the first protrusion, so that the decorative door panel is fixedly connected to the auxiliary swing arm; the two opposite ends of the decorative door panel are partially bent, and a decorative slide groove is formed between the bent part of the decorative door panel and the unbent part of the decorative door panel, and second protrusions are provided at the opposite ends of the connecting member, and the second protrusions are located in the decorative slide groove, and the decorative door panel is slidably connected to the connecting member through the decorative slide groove. That is, the connection of the decorative door panel can be achieved through the auxiliary swing arm, the fixing method is simple, and there is no need to change other structures, which is conducive to the setting of other structures.

[0025] In some possible implementations, the above-mentioned rotating shaft structure also includes a decorative door panel, the material of the decorative door panel includes a super-strong polymer material, and the decorative door panel is formed in one piece.

[0026] This arrangement improves the processing reliability and economy of the decorative door panel, and the formed decorative door panel is relatively flat. When the shaft structure is arranged in a foldable terminal, it is convenient to arrange other structures in the terminal.

[0027] In some possible implementations, the number of pins, cams and first springs is two, and the number of damping swing arms is four; the two pins are arranged side by side along the first direction, and the pins extend along the second direction, the cam has two cam holes, the two cam holes are arranged side by side along the first direction, the cams are respectively sleeved on the two pins through the two cam holes, and there is a gap between the two cams, the two first springs are respectively sleeved on the two pins, and are respectively located in the gap between the two cams, wherein the rotating cams of the two damping swing arms are arranged adjacent to one of the cams, and along the second direction, are located at a position where the cam is away from the first cam. On one side of a spring, the rotating cams of the other two damping swing arms are arranged closely to another cam, and along the second direction, are located on the side of the cam away from the first spring; second convex columns are arranged on the two side walls of the end of the swing member away from the rotating cam, and a fifth connecting groove adapted to the damping swing arm is opened on the connecting member, and the side wall of the fifth connecting groove is partially recessed to form a second groove adapted to the second convex column, and the second convex column slides and rotates in the second groove to make the damping mechanism and the connecting member slidably and rotatably connected; wherein the first direction is the direction from the first fuselage to the second fuselage, and the second direction is the axial direction of the rotating shaft structure.

[0028] The damping mechanism provided in the present application has a simple structure, reduces the difficulty of preparation, has a low cost, and provides a large damping force.

[0029] Exemplarily, the first direction is the X-axis direction in the embodiment, and the second direction is the Y-axis direction in the embodiment.

[0030] In some possible implementations, based on the above-mentioned two pins, two cams and two first springs, and four damping swing arms, a connecting portion is provided between the two damping swing arms on the same pin, and the two ends of the connecting portion are respectively fixedly connected to the two damping swing arms, so as to ensure the synchronization of the two damping swing arms on the same pin and the reliability of the whole machine when it is bent.

[0031] In some possible implementations, the flexible swing arm includes a rotating shaft and a sliding portion located on one side of the rotating shaft, a limiting block is provided on the sliding portion, and a third boss is provided on both side walls of the sliding portion away from the rotating shaft; the flexible beam is located on both sides of the connecting rod, and a limiting hole is provided on the connecting rod; a rotating hole adapted to the rotating shaft is provided on the shaft cover, so that the flexible swing arm is rotatably connected to the shaft cover; a fourth connecting slot is provided on the connecting piece, and the side wall of the fourth connecting slot is partially recessed to form a third groove adapted to the third boss, and the third boss slides and rotates in the third groove, so that the flexible swing arm is slidably and rotatably connected to the connecting piece; the flexible beams located on both sides of the connecting rod are respectively fixed on the non-recessed side walls of the fourth connecting slot, and the limiting blocks of the flexible swing arm are clamped in the limiting holes of the connecting rod, so that the flexible swing arm and the connecting rod are fixedly connected.

[0032] The damping mechanism provided in the present application has a simple structure, reduces the difficulty of preparation, has a low cost, and provides a large damping force.

[0033] In some possible implementations, when the above-mentioned multiple damping mechanisms also include a lateral damping mechanism, a second convex strip is provided on both side walls of the lateral swing arm, a fifth connecting groove is provided on the connecting piece, and the side walls of the fifth connecting groove are partially recessed to form a fourth groove adapted to the second convex strip, and the second convex strip slides in the fourth groove to enable the lateral swing arm to be slidably connected to the connecting piece; a third shaft cover groove adapted to the lateral rotating part is provided on the shaft cover, and the lateral piece is rotatably connected to the shaft cover through the lateral rotating part; the number of lateral rotating parts is two, and the two lateral rotating parts are arranged at intervals; the lateral swing arm is an annular structure with an opening, and the two lateral rotating parts are fixedly connected to the lateral swing arm respectively, and are located on both sides of the opening; the support member is located in the annular structure, and the roller is located in the gap between the two lateral rotating parts.

[0034] The damping mechanism provided in the present application has a simple structure, reduces the difficulty of preparation, has a low cost, and provides a large damping force.

[0035] In some possible implementations, the number of damping mechanisms is three. When the number of damping mechanisms is three, the cost will not be increased due to too many damping mechanisms, nor will the damping force be reduced due to too few damping mechanisms, thereby affecting the opening and closing feel.

[0036] In some possible implementations, the three damping mechanisms are all convex-concave wheel damping mechanisms; or, the three damping mechanisms are all compliant damping mechanisms; or, at least one of the three damping mechanisms is a convex-concave wheel damping mechanism, and at least one is a compliant damping mechanism. Of course, the combination of the three damping mechanisms is not limited to this.

[0037] In some possible implementations, the number of damping mechanisms is three; at least one of the three damping mechanisms is a convex-concave wheel damping mechanism, and at least one is a lateral damping mechanism; or at least one of the three damping mechanisms is a compliant damping mechanism, and at least one is a lateral damping mechanism. Of course, the combination of the three damping mechanisms is not limited to this.

[0038] In a second aspect, an embodiment of the present application provides a foldable terminal, which is an outward-folding foldable terminal. The outward-folding foldable terminal includes the rotating shaft structure of the first aspect and has the same beneficial effects as the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structure of a foldable terminal provided in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of a foldable mobile phone provided in an embodiment of the present application when folded;

[0041] Figure 3 A schematic diagram of the front structure of a rotating shaft structure provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of the back structure of a rotating shaft structure provided in an embodiment of the present application;

[0043] Figure 5 for Figure 3 An exploded view of the shaft structure shown;

[0044] Figure 6 for Figure 4 An exploded view of the shaft structure shown;

[0045] Figure 7 A schematic diagram of the structure of a main swing arm provided in an embodiment of the present application;

[0046] Figure 8 A schematic diagram of a partial structure of a connector provided in an embodiment of the present application;

[0047] Fig. 9 A positional relationship diagram of the main swing arm, the connecting piece, and the shaft cover provided in the embodiment of the present application;

[0048] Fig.10 A schematic diagram of the structure of a secondary swing arm assembly provided in an embodiment of the present application;

[0049] Fig.11 A schematic diagram of a partial structure of a connector provided in an embodiment of the present application;

[0050] Fig.12 A schematic diagram of the structure of a synchronization mechanism provided in an embodiment of the present application;

[0051] Fig.13 A schematic diagram of a partial structure of a connector provided in an embodiment of the present application;

[0052] Fig.14 A top view of a damping mechanism provided in an embodiment of the present application;

[0053] Fig.15 A three-dimensional diagram of a damping mechanism provided in an embodiment of the present application;

[0054] Fig.16 A schematic diagram of a partial structure of a connector provided in an embodiment of the present application;

[0055] Fig.17 for Figure 3 Enlarged view of the middle QQ area;

[0056] Fig.18 for Fig.17Section along OO' direction;

[0057] Fig.19 A schematic diagram of a partial structure of a rotating shaft structure provided in an embodiment of the present application;

[0058] Fig. 20 A diagram showing the position relationship of the supporting door panel when the foldable terminal is in a folded state provided in an embodiment of the present application;

[0059] Fig.21 A schematic diagram of a partial structure of a rotating shaft structure provided in an embodiment of the present application;

[0060] Fig. 22 for Fig.21 Cross-sectional view along PP' direction;

[0061] Fig.23 A schematic diagram of a partial structure of a connector provided in an embodiment of the present application;

[0062] Fig.24 A schematic diagram of a partial structure of a decorative door panel provided in an embodiment of the present application;

[0063] Fig.25 A front structural schematic diagram of another rotating shaft structure provided in an embodiment of the present application;

[0064] Fig.26 A schematic diagram of the back structure of another rotating shaft structure provided in an embodiment of the present application;

[0065] Fig. 27 for Fig.25 An exploded view of the shaft structure shown;

[0066] Fig.28 for Fig.26 An exploded view of the shaft structure shown;

[0067] Fig.29 for Fig.25 Enlarged view of the middle WW region;

[0068] Fig.30 for Fig. 27 Enlarged view of the middle RR region;

[0069] Fig.31 for Fig.29 Cross-section along SS' direction;

[0070] Fig.32 A front structural schematic diagram of another rotating shaft structure provided in an embodiment of the present application;

[0071] Fig.33 A schematic diagram of the back structure of another rotating shaft structure provided in an embodiment of the present application;

[0072] Fig.34 for Fig.32 An exploded view of the shaft structure shown;

[0073] Fig.35 for Fig.33 An exploded view of the shaft structure shown;

[0074] Fig.36 A partial diagram of the positional relationship between the second damping mechanism and the shaft cover provided in an embodiment of the present application;

[0075] Fig.37 for Fig.36 Cross-section along TT' direction

[0076] Fig.38 A top view of a second damping mechanism provided in an embodiment of the present application;

[0077] Fig.39 A three-dimensional diagram of a second damping mechanism provided in an embodiment of the present application.

[0078] Reference numerals:

[0079] 10-first display unit; 20-first body; 30-second body; 40-rotating shaft structure; 100-foldable mobile phone;

[0080] 21-first housing; 22-first middle frame; 221-first appearance component;

[0081] 31-second housing; 32-second middle frame; 321-second appearance component;

[0082] 41-shaft cover; 411-first shaft cover slide;

[0083] 42-rotating mechanism; 421-main swing arm; 4211-first main swing member; 4212-second main swing member; 4213-fixed column; 422-auxiliary swing arm; 4221-swing arm rotating member; 4222-sliding member; 42221-first sliding surface; 42222-second sliding surface; 42223-side sliding surface; 4223-first convex block; 42231-first convex portion; 42232-second convex portion; 4224-swing arm slide groove; 42 3-connecting member; 4230-connecting hole; 4231-first connecting member; 4232-second connecting member; 4233-first connecting slot; 4234-second connecting slot; 4235-first convex strip; 4236-structural member; 4237-third connecting slot; 4238-first groove; 4239-fifth connecting slot; 4240-second groove; 4241-second convex block; 4242-fourth connecting slot; 4243-third groove;

[0084] 43-synchronizing mechanism; 431-synchronizing member; 4311-synchronizing swing arm; 43111-first boss; 4312-gear; 43121-gear part; 43122-gear rotating part;

[0085] 44-damping mechanism; 44a-first damping mechanism; 44b-second damping mechanism; 44b1-first flexible member; 44b2-second flexible member; 44b3-first lateral member; 44b3-second lateral member; 44c-third damping mechanism; 441-pin shaft; 442-cam; 4421-cam hole; 443-spring; 444-damping swing arm; 4441-annular rotating cam; 4442-swinging member; 4443-second boss; 445-connecting portion; 446-flexible swing arm; 4461-rotation axis; 4462-sliding part; 4463-limiting block; 4464-third convex column; 447-flexible unit; 4471-connecting rod; 44711-limiting hole; 4472-flexible beam; 448-lateral swing arm; 4481-second convex strip; 4482-opening; 4483-end; 4484-support member; 4485-roller; 449-lateral rotating part; 4486-second spring; 4487-bottom surface;

[0086] 45-supporting door panel; 451-first supporting door panel; 452-second supporting door panel;

[0087] 46-decorative door panel; 461-first decorative door panel; 462-second decorative door panel; 463-decorative slide. DETAILED DESCRIPTION

[0088] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0089] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0090] The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0091] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0092] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0093] The embodiment of the present application provides a foldable terminal, which can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a car computer, a television, a smart wearable device, a smart home device, etc. The embodiment of the present application does not specifically limit the specific form of the above foldable terminal. For the convenience of description, the following description is taken as an example that the foldable terminal is a foldable mobile phone.

[0094] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a foldable terminal provided in an embodiment of the present application. Figure 1 As shown, the foldable mobile phone 100 includes a first display unit (also called a foldable screen or a flexible screen) 10 .

[0095] The first display unit 10 is, for example, a flexible display screen. The first display unit 10 includes, for example, an organic light emitting diode (OLED) display screen. The OLED display screen does not require a backlight module, and the substrate substrate in the OLED display screen can, for example, be made of a flexible resin material, such as polyethylene terephthalate (PET), so that the OLED display screen has a bendable property. Of course, the types of the first display unit 10 include, but are not limited to, OLED display screens. As long as the display screen can be bent, it is within the protection scope of the present application, for example, it can also be a liquid crystal display (LCD) screen, an LED display screen (for example, including a Micro-LED display screen, a Mini-LED display screen), etc.

[0096] It should be noted that, in order to facilitate the clear description of the subsequent structural features and the positional relationship of the structural features, the positional relationship of the various structures in the foldable mobile phone 100 is defined by the X-axis direction, the Y-axis direction and the Z-axis direction. Among them, the X-axis direction is the width direction of the foldable mobile phone 100 after unfolding, the Y-axis direction is the length direction of the foldable mobile phone 100 after unfolding, and the Z-axis direction is the thickness direction of the foldable mobile phone 100 after unfolding.

[0097] Continue to see Figure 1 , the foldable mobile phone 100 also includes a structural component. The structural component includes a first body 20, a second body 30 and a hinge structure 40. Along the X-axis direction, the first body 20 and the second body 30 are located on both sides of the hinge structure 40, and the hinge structure 40 is connected to the first body 20 and the second body 30 respectively. The first body 20, the hinge structure 40, and the second body 30 can be used to carry the first display unit 10. The first body 20 and the second body 30 can be rotated around the axis S0 (parallel to the Y-axis direction) of the hinge structure 40 respectively to realize the folding or unfolding state of the first display unit 10, that is, to realize the folding or unfolding state of the foldable mobile phone 100.

[0098] It should be noted that the foldable mobile phone 100 can be folded at multiple positions, and accordingly, the structural component may include multiple hinge structures 40 and multiple fuselages. For example, two hinge structures 40 and three fuselages may be included, and two adjacent fuselages are connected by a hinge structure 40, so that the foldable mobile phone 100 has two folding positions. It can be seen that the structural component includes at least one hinge structure 40 and at least two fuselages, and two adjacent fuselages are connected by a hinge structure 40. For the convenience of explanation, the embodiments of the present application are all described by taking the structural component including a hinge structure 40 and two fuselages (i.e., the first fuselage 20 and the second fuselage 30) as an example.

[0099] Figure 1 Shown is a schematic diagram of a foldable mobile phone after unfolding. Figure 2 Shown is a schematic diagram of a foldable mobile phone when folded. Figure 2 When the foldable mobile phone 100 is folded, it can face the light emitting direction away from the first display unit 10 ( Figure 2 The foldable mobile phone 100 is folded (as indicated by the middle arrow), that is, the direction in which the first body section 20 and the second body section 30 rotate around the rotating shaft structure 40 is opposite to the light emitting direction of the flexible screen 10, that is, when the foldable mobile phone 100 is in the folded state, the first display unit 10 is exposed to the outside. In this case, the foldable mobile phone 100 can also be called an outward-folding foldable mobile phone.

[0100] Continue to see Figure 1 The first body 20 includes a first outer shell 21 and a first middle frame 22. The second body 30 includes a second outer shell 31 and a second middle frame 32.

[0101] The first housing 21 can be the back cover (also called the battery cover) of the foldable mobile phone 100; it can also be a display unit for display, which is not limited in the embodiments of the present application. The second housing 31 can be the back cover (also called the battery cover) of the foldable mobile phone; it can also be a display unit for display, which is not limited in the embodiments of the present application. The embodiments of the present application are described by taking the first housing 21 as the back cover and the second housing 31 as the display unit (also called the second display unit or display screen, to distinguish the above-mentioned first display unit 10) as an example.

[0102] The second display unit 31 includes, for example, LCD display screen, OLED display screen, LED display screen and other types of display screens.

[0103] Continue to see Figure 1 The first middle frame 22 includes a first appearance member 221 and a first support member ( Figure 1 The second middle frame 32 includes a second appearance member 321 and a second support member ( Figure 1 not shown).

[0104] The first display unit 10, the back cover 21, the first appearance component 221, the second display unit 31 and the second appearance component 321 form a receiving cavity. The receiving cavity is provided with a printed circuit board, a flexible circuit board, a functional device and other structures ( Figure 1 and Figure 2 The functional components include, for example, a display driver module, a camera, and a battery, etc. The structure in the accommodating cavity is supported by the first support member of the first middle frame 22 and the second support member of the second middle frame 32 .

[0105] The shaft structure 40 includes a shaft cover, a rotating structure, a synchronization mechanism, a damping mechanism and a door panel, etc. However, each structure in the existing shaft structure 40 has a large number of parts, is complex to process, and has high cost, and the existing damping mechanism has problems such as low damping force and poor opening and closing feel.

[0106] Based on this, the embodiment of the present application provides a hinge structure, which has fewer parts, simplifies assembly, reduces the weight of the whole machine, reduces costs, improves the damping force of the hinge structure, and achieves an opening and closing feel. In addition, it can also improve problems such as screen creases.

[0107] The specific structure of the rotating shaft structure provided in the embodiment of the present application is introduced below.

[0108] In one example, see Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 3 This is a front structural schematic diagram of a rotating shaft structure provided in an embodiment of the present application. Figure 4 This is a schematic diagram of the back structure of a rotating shaft structure provided in an embodiment of the present application. Figure 5 for Figure 3 The exploded diagram of the shaft structure is shown. Figure 6 for Figure 4 The exploded diagram of the shaft structure is shown in Figure 1. Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the shaft structure 40 includes a shaft cover 41, a rotating mechanism 42, a synchronization mechanism 43, a damping mechanism 44, two supporting door panels 45 and two decorative door panels 46, wherein the two supporting door panels 45 are respectively a first supporting door panel 451 and a second supporting door panel 452, and the two decorative door panels 46 are respectively a first decorative door panel 461 and a second decorative door panel 462. Along the X-axis direction, the first supporting door panel 451 and the second supporting door panel 452 are arranged on both sides of the shaft cover 41, and the first decorative door panel 461 and the second decorative door panel 462 are arranged on both sides of the shaft cover 41.

[0109] It should be noted that, in order to clearly show the structures of the shaft cover 41, the rotating mechanism 42, the synchronizing mechanism 43, the damping mechanism 44 and the like of the rotating shaft structure 40, Figure 3 The decorative door panel 46 is not shown (it will block the shaft cover 41, the rotating mechanism 42, the synchronization mechanism 43, and the damping mechanism 44).

[0110] The rotating mechanism 42 includes a main swing arm group and a secondary swing arm group, wherein the main swing arm group includes two main swing arms 421 disposed on both sides of the shaft cover 41 along the X-axis direction, and the secondary swing arm group includes two secondary swing arms 422 disposed on both sides of the shaft cover 41 along the X-axis direction. The number of the main swing arm group and the secondary swing arm group is, for example, multiple, and the multiple main swing arm groups and the multiple secondary swing arm groups are evenly distributed on the shaft cover 41. For example, the number of the main swing arm group and the secondary swing arm group is three, and they are evenly distributed on the shaft cover 41.

[0111] The hinge structure 40 further includes two connecting members 423 disposed on both sides of the shaft cover 41 along the X-axis direction. The two connecting members 423 are respectively a first connecting member 4231 and a second connecting member 4232. The first connecting member 4231 and the second connecting member 4232 are each provided with at least one connecting hole 4230. The first connecting member 4231 is fixedly connected to the first fuselage 20 through the connecting hole 4230 thereon. For example, the first connecting member 4231 is fixedly connected to the first supporting member of the first middle frame 22 through the connecting hole 4230 thereon. To achieve a fixed connection with the first body 20; the second connecting member 4232 is fixedly connected to the second body 30 through the connecting hole 4230 thereon, for example, the second connecting member 4232 is fixedly connected to the first support member of the second middle frame 32 through the connecting hole 4230 thereon, to achieve a fixed connection with the second body 30, that is, the hinge structure 40 is connected to the first body 20 and the second body 30 through two connecting members 423, so as to realize the folding or unfolding of the first body 20 and the second body 30 through the hinge structure 40.

[0112] See also Figure 7 , Figure 8 and Fig. 9 , Figure 7 A schematic diagram of the structure of a main swing arm provided in an embodiment of the present application is shown in FIG. Figure 8 A schematic diagram of a partial structure of a connector provided in an embodiment of the present application is shown in FIG. Fig. 9 This is the position relationship diagram of the main swing arm, connecting parts and shaft cover. Figure 7 , Figure 8 and Fig. 9 As shown, the main swing arm 421 includes a first main swing member 4211 and a second main swing member 4212 that are fixedly connected. The cross-sectional shapes of the first main swing member 4211 and the second main swing member 4212 are, for example, arc-shaped or approximately arc-shaped, that is, the projections of the first main swing member 4211 and the second main swing member 4212 on the plane formed by the X-axis and the Z-axis are both arc-shaped or approximately arc-shaped. The connecting member 423 is provided with a first connecting slot 4233 that is adapted to the second main swing member 4212. At least a portion of the second main swing member 4212 is located in the first connecting slot 4233 so as to be rotatably connected to the connecting member 423 through the first connecting slot 4233. The shaft cover 41 is provided with a first shaft cover slot 411 adapted to the first main pendulum component 4211. At least a portion of the first main pendulum component 4211 is located in the first shaft cover slot 411 so as to be rotatably connected to the shaft cover 41 through the first shaft cover slot 411. Thus, when the position of the shaft cover 41 remains unchanged, the connecting member 423 can rotate relative to the shaft cover 41, thereby realizing the opening and closing of the first body 20 and the second body 30.

[0113] It should be noted that the projection on the plane formed by the X-axis and the Z-axis refers to the plane formed by the X-axis and the Y-axis when the foldable mobile phone 100 is in the unfolded state. The following examples are the same and will not be repeated here.

[0114] See also Fig.10 , Fig.10 This is a schematic diagram of the structure of a secondary swing arm assembly provided in an embodiment of the present application. Fig.10 As shown, the auxiliary swing arm 422 includes a swing arm rotating member 4221 and a sliding member 4222 formed integrally with the swing arm rotating member 4221. The cross-sectional shape of the swing arm rotating member 4221 is, for example, arc-shaped or approximately arc-shaped, that is, the projection of the swing arm rotating member 4221 on the plane formed by the X-axis and the Z-axis is arc-shaped or approximately arc-shaped. The sliding member 4222 is, for example, in the shape of a flat plate. The sliding member 4222 includes a first sliding surface 42221 and a second sliding surface 42222 that are arranged opposite to each other along the Z-axis direction, and also includes a side sliding surface 42223 connecting the first sliding surface 42221 and the second sliding surface 42222. The swing arm rotating member 4221 is fixed to the side sliding surface 42223 to achieve a fixed connection with the sliding member 4222. A first convex block 4223 is provided on the first surface 42221 of the sliding member 4222. The first convex block 4223 includes a first convex portion 42231 and a second convex portion 42232 sequentially arranged along the Z-axis direction. The size of the first convex portion 42231 in the Y-axis direction is smaller than the size of the second convex portion 42232 in the Y-axis direction, so that the second convex portion 42232 and the first surface 42221 form at least one swing arm slot 4224, wherein: Fig.10 The description is made by taking the example that the second convex portion 42232 and the first surface 42221 form two swing arm slots 4224 , and the two swing arm slots 4224 are opposite to each other along the Y-axis direction.

[0115] It should be noted that the embodiment of the present application is described by taking the swing arm rotating part 4221 and the sliding part 4222 as an example of integrally formed, but this does not constitute a limitation of the present application. For example, they can also be formed separately and fixed together by welding or bonding.

[0116] See also Fig.11 , Fig.11 This is a partial structural diagram of a connector provided in an embodiment of the present application. Fig.11 As shown, a second connecting groove 4234 adapted to the sliding member 4222 is provided on the connecting member 423, and a first convex strip 4235 adapted to the swing arm groove 4224 is formed on the side wall of the second connecting groove 4234. The first convex strip 4235 slides in the swing arm groove 4224 to realize the sliding connection between the auxiliary swing arm 422 and the connecting member 423.

[0117] A second shaft cover slide groove (not shown in the figure) adapted to the swing arm rotating member 4221 is provided on the shaft cover 41. At least a portion of the swing arm rotating member 4221 is located in the second shaft cover slide groove so as to be rotatably connected to the shaft cover 41 through the second shaft cover slide groove. In this way, when the position of the shaft cover 41 remains unchanged, the connecting member 423 can rotate relative to the shaft cover 41, thereby realizing the opening and closing of the first fuselage 20 and the second fuselage 30.

[0118] From the above content, it can be known that the main swing arm 421 is rotatably connected to the connecting member 423 and the shaft cover 41 respectively, the auxiliary swing arm 422 is slidably connected to the connecting member 423, and is rotatably connected to the shaft cover 41. The main swing arm 421, the auxiliary swing arm 422, the connecting member 423 and the shaft cover 41 constitute a connecting rod mechanism, which controls the movement of the connecting member 423 to realize the rotational movement of the hinge structure 40, and then the first body 20 and the second body 30 can be unfolded or folded, that is, the foldable mobile phone 100 can be unfolded or folded.

[0119] It should be noted that the embodiment of the present application does not limit the number and location of the synchronization mechanism 43, and those skilled in the art can select the number and location of the synchronization mechanism 43 according to actual conditions. The embodiment of the present application takes the example that there are two synchronization mechanisms 43, which are evenly distributed on the shaft cover 41.

[0120] See also Fig.12 , Fig.12 A schematic diagram of the structure of a synchronization mechanism provided in an embodiment of the present application. Fig.12 As shown, the synchronization mechanism 43 includes two synchronization members 431 arranged side by side along the X-axis direction, and the synchronization member 431 includes a synchronization swing arm 4311 and a gear 4312. The gears 4312 of the two synchronization members 431 are meshed with each other, and the synchronization swing arms 4311 of the two synchronization members 431 along the X-axis direction are arranged on both sides of the two meshed gears 4312.

[0121] Continue to see Fig.12 The gear 4312 includes a gear portion 43121 and two gear rotating portions (also referred to as gear shafts) 43122 located on both sides of the gear portion 43121 along the Y-axis direction, and the two gears 4312 are meshed with each other through the gear portion 43121. The shaft cover 41 is provided with a rotating hole (not shown in the figure) adapted to the gear rotating portion 43122, and the gear rotating portions 43122 of the two gears 4312 are inserted into the rotating holes one by one to realize the rotation connection between the synchronization mechanism 43 and the shaft cover 41. Two first protrusions 43111 arranged opposite to each other along the Y-axis direction are provided on the two side walls of the synchronization swing arm 4311 away from the end of the gear 4312, wherein the extension directions of the two first protrusions 43111 are opposite.

[0122] See also Fig.13 , Fig.13This is a partial structural diagram of a connector provided in an embodiment of the present application. Fig.13 As shown, the connecting member 423 is provided with a third connecting slot 4237 adapted to the synchronous swing arm 4311, and the side wall of the third connecting slot 4237 is partially recessed to form a first groove 4238 adapted to the two first convex pillars 43111, and the first convex pillars 43111 slide and rotate in the first groove 4238 to achieve the sliding and rotating connection between the synchronous mechanism 43 and the connecting member 423. The groove 4238 has a slope to facilitate the sliding of the synchronous member 431.

[0123] From the above content, it can be seen that the synchronization mechanism 43 cooperates with the sliding and rotating connection member 423 through the boss 43111, and realizes the synchronous rotation of the first connection member 4231 and the second connection member 4232 through the engagement of the gear 4312, thereby ensuring the synchronization of the first connection member 4231 and the second connection member 4232, and further ensuring the synchronization of the first body 20 and the second body 30.

[0124] The damping mechanism 44 provides a damping force, and the foldable mobile phone 100 can achieve an opening and closing feel during the opening and closing process. The embodiment of the present application does not limit the number of the damping mechanism 44, and those skilled in the art can set it according to actual conditions. Figure 1-Figure 4 The description is made by taking the case where there are three damping mechanisms 44 and the three damping mechanisms 44 are evenly arranged on the shaft cover 41. When there are three damping mechanisms 44, the cost will not be increased due to too many damping mechanisms 44, nor will the damping force be reduced due to too few damping mechanisms 44, thereby affecting the opening and closing feel.

[0125] See also Fig.14 and Fig.15 , Fig.14 A top view of a damping mechanism provided in an embodiment of the present application, Fig.15 A three-dimensional diagram of a damping mechanism provided in an embodiment of the present application. Fig.14 and Fig.15 As shown, the damping mechanism 44 includes two pins 441, two cams 442, two first springs 443 and four damping swing arms 444, wherein, in order to distinguish the damping mechanism in the following example, the damping mechanism 44 in this example may also be referred to as a convex-concave damping mechanism. The two pins 441 are arranged side by side along the X-axis direction, and each pin 441 extends along the Y-axis direction. Each cam 442 has two cam holes 4421 arranged side by side along the X-axis direction, and the cam 442 is sleeved on the pin 441 through the two cam holes 4421, and there is a gap between the two cams 442. The two first springs 443 are respectively sleeved on the two pins 441, and are respectively located at the gap between the two cams 442.

[0126] The damping swing arm 444 includes an annular rotating cam 4441 and a swinging member 4442 located at one side of the annular rotating cam 4441 and fixedly connected to the rotating cam 4441. Two second protrusions 4443 extending along the Y-axis direction are provided on the two side walls of the swinging member 4442 at one end away from the rotating cam 4441, wherein the extending directions of the two second protrusions 4443 are opposite. Along the Y-axis direction, two damping swing arms 444 are respectively sleeved on one of the pin shafts 441 through their respective annular rotating cams 4441, and the two annular rotating cams 4441 are respectively arranged adjacent to one of the concave wheels 442 and are both located on the side of the concave wheels 442 away from the first spring 443, and the other two damping swing arms 444 are respectively sleeved on the other pin shaft 441 through their respective annular rotating cams 4441, and the two annular rotating cams 4441 are respectively arranged adjacent to one of the concave wheels 442 and are both located on the side of the concave wheels 442 away from the first spring 443.

[0127] See also Fig.16 , Fig.16 This is a partial structural diagram of a connector provided in an embodiment of the present application. Fig.16 As shown, the connecting member 423 is provided with a fifth connecting slot 4239 adapted to the damping swing arm 444, and the side wall of the fifth connecting slot 4239 is partially recessed to form a second groove 4240 adapted to the two second convex pillars 4443. Fig.17 and Fig.18 , Fig.17 for Figure 3 A magnified image of the middle QQ area. Fig.18 for Fig.17 The cross-section along the OO' direction. Figure 15-18 As shown, when the cam 442, the first spring 443 and the damping swing arm 444 are sleeved on the pin 441, the two ends of the pin 441 are exposed, and the exposed part of the pin 441 is fixedly connected with the shaft cover 41, that is, the damping mechanism 44 is fixedly connected with the shaft cover 41 through the pin 441. The second convex column 4443 slides and rotates in the second groove 4240 to achieve the sliding and rotating connection between the damping mechanism 44 and the connecting member 423.

[0128] In order to ensure the synchronization of the two damping swing arms 444 located on the same pin shaft 441 , a connecting portion 445 is provided between the two damping swing arms 444 for connecting the two damping swing arms 444 .

[0129] Specifically, when the damping swing arm 444 is slidingly and rotationally connected to the connecting member 423, the rotation of the connecting member 423 is converted into a linear motion of the first spring 443 (moving along the Y-axis direction on the pin shaft 441) through the cam surface (the contact surface between the concave wheel 442 and the annular rotating cam 4441), thereby compressing the first spring 443 and generating a damping force.

[0130] As can be seen from the above, the shaft structure 40 uses three groups of damping mechanisms 44, and the three groups of damping mechanisms 44 are evenly distributed on the shaft cover 41. The damping mechanism 44 formed by the three groups of convex and concave wheels improves the damping force of the shaft structure 40, and achieves the opening and closing feel during the unfolding or folding process, and the pressure on the cam surface of each group of damping mechanisms 44 is evenly distributed, avoiding the problems of high pressure on the cam surface, easy wear of the cam surface, and insufficient life. In addition, in this example, the damping mechanism 44 has a simple structure, simple processing, and low cost.

[0131] See also Fig.19 , Fig.19 This is a partial structural diagram of the rotating shaft structure provided in the embodiment of the present application, wherein, in order to clearly show the position of the supporting door panel 45, Fig.19 The decorative door panels are not shown. Figure 7 , Fig. 9 and Fig.19 As shown, the first main swing member 4211 and the second main swing member 4212 of the main swing arm 421 are both provided with a fixing column 4213, the extension direction of the fixing column 4213 is opposite to the bending direction of the first main swing member 4211 and the second main swing member 4212, the first main swing member 4211 and the second main swing member 4212 of one of the main swing arms 421 in the main swing arm group are fixedly connected to one of the support door panels 45, for example, the first support door panel 451, through the fixing column 4213, and the first main swing member 4211 and the second main swing member 4212 of the other main swing arm 421 in the main swing arm group are fixedly connected to another support door panel 45, for example, the second support door panel 452, through the fixing column 4213, so that the two support door panels 45 are arranged on both sides of the shaft cover 41 along the X-axis direction. That is to say, the support door panel 45 is fixedly connected to the main swing arm 421, and the movement of the support door panel 45 is controlled by the movement of the main swing arm 421. The first display unit 10 is supported by the first supporting door plate 451 and the second supporting door plate 452. In the unfolded state, the first display unit 10 is supported to prevent the first display unit 10 from being pressed and collapsed. In the folded state (such as Fig. 20 As shown), the bending area of ​​the first display unit 10 is supported to prevent the first display unit 10 from collapsing.

[0132] As for the material of the supporting door panel 45, the embodiment of the present application does not limit the material of the supporting door panel 45, and those skilled in the art can select it according to the actual situation. Exemplarily, the material of the supporting door panel 45 includes super polymer material, etc. When the material of the supporting door panel 45 is super polymer material, the supporting door panel 45 can be formed in one piece, so that the bearing capacity of the supporting door panel 45 for the first display unit 10 can be improved, and the reliability of supporting the first display unit 10 can be improved, and the reliability and economy of processing the supporting door panel 45 can also be improved.

[0133] See also Fig.21and Fig. 22 , Fig.21 A schematic diagram of a partial structure of a rotating shaft structure provided in an embodiment of the present application, Fig. 22 for Fig.21 Cross-sectional view along the PP' direction. Fig.21 and Fig. 22 As shown, the first decorative door panel 461 is fixedly connected to the sliding part 4222 of one of the auxiliary swing arms 422 in the auxiliary swing arm group, and the second decorative door panel 462 is fixedly connected to the sliding part 4222 of the other auxiliary swing arm 422 in the auxiliary swing arm group, and the movement of the auxiliary swing arm 422 controls the movement of the decorative door panel 46.

[0134] See also Fig.23 and Fig.24 , Fig.23 A schematic diagram of a partial structure of a connector provided in an embodiment of the present application. Fig.24 A schematic diagram of the partial structure of the decorative door panel provided in the embodiment of the present application. Fig.23 and Fig.24 , along the Y-axis direction, the two opposite ends of the decorative door panel 46 are bent, and a decorative slide groove 463 is formed between the bent portion and the unbent portion. Correspondingly, along the Y-axis direction, the two opposite ends of the connecting member 423 are provided with second protrusions 4241, and the second protrusions 4241 are located in the decorative slide groove 463. When the movement of the auxiliary swing arm 422 controls the movement of the decorative door panel 46, the second protrusion 4241 slides in the decorative slide groove 463. The first decorative door panel 461 and the second decorative door panel 462 can shield at least part of the rotating mechanism 42, the synchronizing mechanism 43, and the damping mechanism 44 to protect the above structures.

[0135] Through the specific description of each of the above structures, it can be known that the hinge structure 40 provided in the embodiment of the present application can increase the damping force of the damping mechanism, and the damping mechanism can not only provide a flattening force, but also provide a closing force, adjust the opening and closing feel of the hinge structure 40, and is beneficial to the user experience. When applied to an external folding folding terminal, the life of the hinge structure 40 can be improved, and the problem of large cam surface pressure and severe wear when a single damping mechanism 44 is avoided, and the damping mechanism 44 has a simple structure and low cost. In addition, since the support door panel 45 is relatively flat and integrally formed, the processing reliability and processing economy are improved, and the bearing capacity of the support door panel 45 for the first display unit 10 is improved, and the screen crease problem is improved. In addition, the main swing arm 421, the auxiliary swing arm 422 and the synchronization mechanism 43 have simple structures and cooperate with each other to ensure the bending reliability of the whole machine, reduce the weight of the whole machine, and reduce the cost.

[0136] In another example, see Fig.25 , Fig.26 , Fig. 27 and Fig.28 , Fig.25This is a front structural diagram of another rotating shaft structure provided in an embodiment of the present application. Fig.26 This is a schematic diagram of the back structure of another rotating shaft structure provided in an embodiment of the present application. Fig. 27 for Fig.25 The exploded diagram of the shaft structure is shown. Fig.28 for Fig.26 The exploded diagram of the shaft structure shown in the figure needs to be explained. Fig.25 , Fig.26 , Fig. 27 and Fig.28 The decorative door panel 46 is not shown. It is understood that, in actual configuration, the rotating shaft structure of the embodiment of the present application may include the decorative door panel 46. Fig.25 , Fig.26 , Fig. 27 and Fig.28 As shown, different from the above example, among the three damping mechanisms 44, one damping mechanism 44 is different from the other two damping mechanisms 44. Specifically, the three damping mechanisms 44 include a first damping mechanism 44a, a second damping mechanism 44b and a third damping mechanism 44c. Along the Y-axis direction, the first damping mechanism 44a, the second damping mechanism 44b and the third damping mechanism 44c are arranged in sequence, and the second damping mechanism 44b is located between the first damping mechanism 44a and the third damping mechanism 44c. The first damping mechanism 44a and the third damping mechanism 44c are, for example, the convex-concave wheel damping mechanisms in the above example. The specific structure of the damping mechanism can refer to the content in the above example, and will not be repeated here. The specific structure of the second damping mechanism 44b is introduced below.

[0137] Combination Fig.29 and Fig.30 , Fig.29 for Fig.25 A magnified image of the middle WW region. Fig.30 for Fig. 27 A magnified view of the RR region. Fig.29 and Fig.30 As shown, the second damping mechanism 44b includes two compliant members with the same structure, the two compliant members are respectively a first compliant member 44b1 and a second compliant member 44b2. For the sake of distinction, the second damping mechanism 44b in this example is also referred to as a compliant damping mechanism.

[0138] The compliant member includes a compliant swing arm 446 and a flexible unit 447. The compliant swing arm 446 includes a rotating shaft 4461 and a sliding portion 4462 located on one side of the rotating shaft 4461, a limit block 4463 is arranged on the upper surface of the sliding portion 4462, and two side walls of the sliding portion 4462 away from the rotating shaft 4461 are provided with two third protrusions 4464 extending along the Y-axis direction, wherein the extension directions of the two third protrusions 4464 are opposite (i.e., one extends in the +Y direction and the other extends in the -Y direction). The flexible unit 447 includes a connecting rod 4471 and flexible beams 4472 located on both sides of the connecting rod 4471, and a limit hole 44711 is provided on the connecting rod 4471.

[0139] The shaft cover 41 is provided with a rotation hole (not shown in the figure) adapted to the rotation shaft 4461 , and the rotation shaft 4461 of the flexible swing arm 446 is inserted into the rotation hole of the shaft cover 41 to realize the rotation connection between the second damping mechanism 44b and the shaft cover 41 .

[0140] Combination Fig.31 , Fig.31 for Fig.29 In the cross-sectional view along the SS' direction, a fourth connecting slot 4242 is provided on the connecting member 423, and the side wall of the fourth connecting slot 4242 is partially recessed to form a third groove 4243 adapted to the two third bosses 4464, and the third bosses 4464 are located in the third groove 4243. The flexible beams 4472 located on both sides of the connecting rod 4471 are respectively fixed to the side walls of the fourth connecting slot 4242, that is, the non-recessed area of ​​the side walls, to achieve the fixation of the flexible unit 447 and the connecting member 423. In addition, the limit block 4463 of the flexible swing arm 446 is clamped in the limit hole 44711 of the flexible unit 447, to achieve the fixed connection between the flexible swing arm 446 and the flexible unit 447. When the connecting member 423 is unfolded or folded along with the first body 20 and the second body 30 , the third protruding column 4464 slides and rotates in the third groove 4243 to achieve the sliding and rotating connection between the damping mechanism 44 and the connecting member 423 .

[0141] Specifically, during the unfolding or folding process of the hinge structure 40, the connecting member 423 drives the sliding portion 4462 of the flexible swing arm 446 to slide, so that the sliding portion 4462 drives the connecting rod 4471 to move up and down (perpendicular to the Y-axis direction) to compress the flexible beam 4472 to generate a damping force. At different unfolding or closing angles, the second damping mechanism 44b reaches a stable state, which helps the hinge structure 40 to maintain the hovering, unfolding, and closing states.

[0142] Exemplarily, during the process of the first fuselage 20 and the second fuselage 30 changing from the folded state to the unfolded state, when the angle between the plane where the first fuselage 20 is located and the plane where the second fuselage 30 is located is before the preset angle, the flexible beam 4472 is bent, enters the closing force interval, generates a closing force, and the second damping mechanism 44b reaches the first steady state. At this time, if you let go, the first fuselage 20 and the second fuselage 30 will return to their initial positions, that is, they are in the folded state. However, when the angle between the plane where the first fuselage 20 is located and the plane where the second fuselage 30 is located is at the preset angle, the flexible beam 4472 is between the closing force interval and the unfolding force interval, and the second damping mechanism 44b reaches a balanced steady state. At this time, if you let go, the first fuselage 20 and the second fuselage 30 maintain this position, that is, the angle between the plane where the first fuselage 20 is located and the plane where the second fuselage 30 is located is still the preset angle. When the angle between the plane where the first fuselage 20 is located and the plane where the second fuselage 30 is located is greater than the preset angle, the flexible beam 4472 continues to bend and enters the deployment force range to generate deployment force. The second damping mechanism 44b reaches a second steady state, achieving relative sliding between the connecting member 423 and the second damping mechanism 44b, which is beneficial to the deployment of the first fuselage 20 and the second fuselage 30.

[0143] It should be noted that this example is described by taking the rotating shaft structure 40 as including three damping mechanisms 44, and the three damping mechanisms 44 include two convex-concave wheel damping mechanisms and one compliant damping mechanism, and the compliant damping mechanism is located between the two convex-concave wheel damping mechanisms, but it does not constitute a limitation of the present application, and those skilled in the art can set it according to actual conditions. In other optional embodiments of the present application, the rotating shaft structure 40 may also include three compliant damping mechanisms, or include two compliant damping mechanisms and one convex-concave wheel damping mechanism, etc. The specific setting positions and connection relationships are the same as those in the above examples, and will not be repeated here. For details, please refer to the corresponding contents of the above two examples.

[0144] Through the specific description of each of the above structures, it can be known that the hinge structure 40 provided in the embodiment of the present application can increase the damping force of the damping mechanism, and the setting of the second damping mechanism helps to maintain the hovering, unfolding, and closing states of the hinge structure 40, adjust the opening and closing feel of the hinge structure 40, and is beneficial to the user experience. In addition, when the hinge structure 40 is applied to an external folding folding terminal, the life of the hinge structure 40 can be improved, and the problem of large cam surface pressure and severe wear when a single damping mechanism 44 is avoided, and the damping mechanism 44 has a simple structure and low cost. In addition, since the support door panel 45 is relatively flat and integrally formed, the processing reliability and processing economy are improved, and the bearing capacity of the support door panel 45 for the first display unit 10 is improved, and the screen crease problem is improved. In addition, the main swing arm 421, the auxiliary swing arm 422 and the synchronization mechanism 43 have simple structures and cooperate with each other to ensure the bending reliability of the whole machine, reduce the weight of the whole machine, and reduce the cost.

[0145] In another example, see Fig.32 , Fig.33 , Fig.34 and Fig.35 , Fig.32 This is a front structural diagram of another rotating shaft structure provided in an embodiment of the present application. Fig.33 This is a schematic diagram of the back structure of another rotating shaft structure provided in an embodiment of the present application. Fig.34 for Fig.32 The exploded diagram of the shaft structure is shown. Fig.35 for Fig.33 The exploded diagram of the shaft structure shown in the figure needs to be explained. Fig.32 , Fig.33 , Fig.34 and Fig.35 The decorative door panel 46 is not shown. It is understood that, in actual configuration, the rotating shaft structure 40 of the embodiment of the present application may include the decorative door panel 46. Fig.32 , Fig.33 , Fig.34 and Fig.35 As shown, different from the first example, among the three damping mechanisms 44, one damping mechanism 44 is different from the other two damping mechanisms 44. Specifically, the three damping mechanisms 44 include a first damping mechanism 44a, a second damping mechanism 44b and a third damping mechanism 44c. Along the Y-axis direction, the first damping mechanism 44a, the second damping mechanism 44b and the third damping mechanism 44c are arranged in sequence, and the second damping mechanism 44b is located between the first damping mechanism 44a and the third damping mechanism 44c. The first damping mechanism 44a and the third damping mechanism 44c are, for example, the convex-concave wheel damping mechanisms in the above example. The specific structure of the damping mechanism can refer to the content in the above example, and will not be repeated here. The specific structure of the second damping mechanism 44b is introduced below.

[0146] See also Fig.36 and Fig.37 , Fig.36 A partial diagram of the positional relationship between the second damping mechanism and the shaft cover provided in an embodiment of the present application, Fig.37 for Fig.36 The cross-section along the TT' direction. Fig.36 and Fig.37 As shown, the second damping mechanism 44b includes two lateral members with the same structure, which are a first lateral member 44b3 and a second lateral member 44b3. For the sake of distinction, the second damping mechanism 44b in this example is also referred to as a lateral damping mechanism.

[0147] Combination Fig.38 and Fig.39 , Fig.38 A top view of a second damping mechanism provided in an embodiment of the present application, Fig.39 3D diagram of the second damping mechanism provided in the embodiment of the present application. Fig.38 and Fig.39 As shown, the lateral member includes a lateral swing arm 448 and a lateral rotating portion 449. The cross-sectional shape of the lateral rotating portion 449 is, for example, arc-shaped or approximately arc-shaped, that is, the projection of the lateral rotating portion 449 on the plane formed by the X-axis and the Y-axis is arc-shaped or approximately arc-shaped.

[0148] Along the Y-axis direction, the side walls of the lateral swing arm 448 are both provided with second convex strips 4481, the connecting member 423 is provided with a fifth connecting slot (not shown in the figure), and the side wall of the fifth connecting slot is partially recessed to form a fourth groove (not shown in the figure) adapted to the two second convex strips 4481, and the second convex strips 4481 are located in the fourth groove. When the connecting member 423 is unfolded or folded along with the first body 20 and the second body 30, the second convex strip 4481 slides in the fourth groove to achieve sliding connection between the second damping mechanism 44 and the connecting member 423.

[0149] A third shaft cover slide groove (not shown in the figure) adapted to the lateral rotating portion 449 is provided on the shaft cover 41, and the lateral rotating portion 449 is located in the third shaft cover slide groove to realize the rotational connection between the second damping mechanism 44b and the shaft cover 41, so that the lateral swing arm 448 can rotate relative to the shaft cover 41 when the position of the shaft cover 41 remains unchanged.

[0150] Exemplarily, the lateral member includes two lateral rotating parts 449 disposed at intervals, and the lateral swing arm 448 is a non-closed annular structure, that is, the lateral swing arm 448 has an opening 4482, and the opening 4482 is arranged so that the lateral swing arm 448 has two end parts 4483 disposed at intervals, and the two lateral rotating parts 449 are respectively connected to the two end parts 4483 of the lateral swing arm 448, and a partial area of ​​the shaft cover 41 is located in the gap between the two lateral rotating parts 449.

[0151] A support member 4484 and a roller 4485 rotatably connected to the support member 4484 are disposed in the annular lateral swing arm 448. At least one second spring 4486 is sleeved on the support member 4484. The opposite ends of the second spring 4486 are respectively fixedly connected to the support member 4484 and the roller 4485. The side wall of the shaft cover 41 located at the gap between the two lateral rotating parts 449 contacts the roller 4485.

[0152] Optionally, in order to better support and protect the second spring 4486, a bottom surface 4487 is provided at the position of the lateral swing arm 448 opposite to the second spring 4486, that is, in the expanded state, the projection of the second spring 4486 on the plane formed by the X-axis and the Y-axis is located at the projection of the bottom surface 4487 on the plane formed by the X-axis and the Y-axis.

[0153] Specifically, when the connecting member 423 is unfolded or folded along with the first body 20 and the second body 30, the connecting member 423 drives the lateral swing arm 448 to rotate relative to the shaft cover 41, and the roller 4485 moves around the side wall of the shaft cover 41. The shaft cover 41 squeezes the roller 4485, and then the roller 4485 compresses the second spring 4486. Accordingly, the roller 4485 is subjected to a load F, generating a damping force.

[0154] That is to say, among the three damping mechanisms provided in the embodiments of the present application, the convex-concave wheel damping mechanism is used to provide the opening and closing feel force, and the force between the roller and the shaft cover in the lateral damping mechanism is used to avoid the problem that the lateral damping mechanism only has a flattening force but cannot generate a closing force, thereby improving the unfolding retention force of the hinge structure, so that the foldable terminal has a better feel during the unfolding or folding process, which is beneficial to the user experience.

[0155] It should be noted that this example is described by taking the rotating shaft structure 40 as including three damping mechanisms 44, and the three damping mechanisms 44 include two convex-concave wheel damping mechanisms and one lateral damping mechanism, and the lateral damping mechanism is located between the two convex-concave wheel damping mechanisms, but it does not constitute a limitation of the present application, and those skilled in the art can set it according to actual conditions. In other optional embodiments of the present application, the rotating shaft structure 40 may also include two lateral damping mechanisms and one convex-concave wheel damping mechanism, or, a compliant damping mechanism and two lateral damping mechanisms, or, two compliant damping mechanisms and a lateral damping mechanism, or, a compliant damping mechanism, a convex-concave wheel damping mechanism and a lateral damping mechanism, etc. The specific setting positions and connection relationships are the same as those in the above examples, and will not be repeated here. For details, please refer to the corresponding contents of the above two examples.

[0156] It should be noted that in the above examples, in order to facilitate the preparation of the connecting member 423, the connecting member 423 can be formed as one piece (such as the connecting member 423 in the first example and the second example), and the connecting member 423 can also be composed of a plurality of structural members (such as the plurality of structural members 4236 in the third example).

[0157] Through the specific description of each of the above structures, it can be known that the shaft structure 40 provided in the embodiment of the present application can increase the damping force of the damping mechanism. The damping mechanism can generate both flattening force and closing force. The convex-concave wheel damping mechanism provides the opening and closing feel of the shaft structure 40. When the shaft structure 40 is in the unfolded state, the lateral damping mechanism improves the unfolding retention force of the shaft structure 40 through the force between the roller 4485 and the shaft cover 41, which is beneficial to the user experience. When the shaft structure 40 is applied to an outward folding folding terminal, the life of the shaft structure 40 can be improved, and the problem of large cam surface pressure and severe wear when it is a single damping mechanism 44 can be avoided. It can also avoid the problem of being unable to generate a closing force when it is only a lateral damping mechanism. In addition, since the support door panel 45 is relatively flat and integrally formed, the processing reliability and processing economy are improved, and the bearing capacity of the support door panel 45 on the first display unit 10 is improved, and the screen crease problem is improved. In addition, the main swing arm 421, the auxiliary swing arm 422 and the synchronization mechanism 43 have simple structures and cooperate with each other to ensure the bending reliability of the whole machine, reduce the weight of the whole machine, and reduce the cost.

[0158] In summary, the rotating shaft structure 40 provided in the embodiment of the present application increases the damping force of the damping mechanism through three groups of convex-concave wheel damping mechanisms 44, or three groups of flexible damping mechanisms 44, or a combination of convex-concave wheel damping mechanisms 44 and flexible damping mechanisms 44, or a combination of lateral damping mechanisms 44 and convex-concave wheel damping mechanisms 44, or a combination of lateral damping mechanisms 44 and flexible damping mechanisms 44, so as to adjust the opening and closing feel of the rotating shaft structure 40, which is beneficial to the user experience. In addition, since the supporting door panel 45 is relatively flat and integrally formed, the processing reliability and processing economy are improved, and the bearing capacity of the supporting door panel 45 for the first display unit 10 is improved, and the problems such as screen creases are improved. In addition, the main swing arm 421, the auxiliary swing arm 422 and the synchronization mechanism 43 have simple structures and cooperate with each other to ensure the bending reliability of the whole machine, reduce the weight of the whole machine, and reduce costs.

[0159] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating shaft structure, characterized in that: Applicable to an outward-folding foldable terminal, the outward-folding foldable terminal comprises a first body and a second body, and the hinge structure connecting the first body and the second body, the hinge structure comprising: Shaft cap; Two connecting members, located on both sides of the shaft cover, used to connect with the first fuselage and the second fuselage respectively; a plurality of damping mechanisms, the plurality of damping mechanisms comprising a male and female wheel damping mechanism; The convex-concave wheel damping mechanism includes a pin shaft, a concave wheel, a first spring and at least two damping swing arms, the pin shaft is fixedly connected to the shaft cover, the concave wheel and the first spring are both sleeved on the pin shaft; the damping swing arm includes a rotating cam sleeved on the pin shaft and adjacent to and in contact with the concave wheel, and a swinging member located on one side of the rotating cam, the swinging members of the two damping swing arms are respectively connected to the two connecting members in a sliding and rotating manner; when the swinging member and the connecting member slide and rotate, the first spring is compressed and generates an axial extrusion force, which acts between the concave wheel and the rotating cam to generate a damping force.

2. The rotating shaft structure according to claim 1, characterized in that: Multiple of the damping mechanisms also include a compliant damping structure, the compliant damping mechanism includes two compliant parts, the compliant parts include a compliant swing arm and a flexible unit, the flexible units of the two compliant parts are respectively fixed on the two connecting parts, one end of the compliant swing arm is rotatably connected to the shaft cover, and the other ends of the compliant swing arms of the two compliant parts are respectively slidably and rotatably connected to the connecting parts; the flexible unit includes a connecting rod and a flexible beam, the compliant swing arm is fixedly connected to the connecting rod; when the other end of the compliant swing arm slides and rotates with the connecting part, the connecting rod is driven to move, and the flexible beam is compressed to generate a damping force.

3. The rotating shaft structure according to claim 1 or 2, characterized in that: The plurality of damping mechanisms further include a lateral damping mechanism; the lateral damping mechanism includes two lateral members, the lateral members include a lateral swing arm and a lateral rotating portion, the lateral rotating portion is rotatably connected to the shaft cover, and the lateral swing arms of the two lateral members are respectively slidably connected to the two connecting members; A support member and a roller rotatably connected to the support member are provided in the lateral swing arm, and at least one second spring is sleeved on the support member, and opposite ends of the second spring are fixedly connected to the support member and the roller respectively; when the angle of the plane where the two connecting members are located is within a preset angle range, the roller contacts the side wall of the shaft cover, the shaft cover squeezes the roller, and the second spring is compressed to generate a damping force.

4. The rotating shaft structure according to claim 1, characterized in that: The rotating shaft structure also includes a rotating mechanism that is rotatably connected to the shaft cover and slidably and rotatably connected to the connecting member, and the rotating mechanism includes a main swing arm group; the main swing arm group includes two main swing arms that are respectively arranged on both sides of the shaft cover; The main swing arm includes a first main swing part and a second main swing part that are fixedly connected. The connecting part is provided with a first connecting groove that is adapted to the second main swing part. The main swing arm is rotatably connected to the connecting part through the second main swing part. The shaft cover is provided with a first shaft cover groove that is adapted to the first main swing part. The main swing arm is rotatably connected to the shaft cover through the first main swing part. The position of the shaft cover remains unchanged. The first main swing parts of the two main swing arms in the main swing arm group rotate relative to the shaft cover to drive the two connecting parts to rotate through the second main swing parts of the two main swing arms in the main swing arm group.

5. The rotating shaft structure according to claim 3, characterized in that: The rotating mechanism further comprises an auxiliary swing arm assembly; the auxiliary swing arm assembly comprises two auxiliary swing arms respectively arranged on both sides of the shaft cover, the auxiliary swing arm comprises a swing arm rotating member and a sliding member; the swing arm rotating member is fixed on the side wall of the sliding member, a first protrusion is arranged on the sliding member, and at least one swing arm sliding groove is formed between the first protrusion and the sliding member; The connecting member is provided with a second connecting groove adapted to the sliding member, and a first convex strip adapted to the swing arm groove is formed on the side wall of the second connecting groove, the auxiliary swing arm is slidingly connected to the connecting member via the swing arm groove, the shaft cover is provided with a second shaft cover groove adapted to the swing arm rotating member, the auxiliary swing arm is rotationally connected to the shaft cover via the swing arm rotating member, the position of the shaft cover remains unchanged, the swing arm rotating members of the two auxiliary swing arms in the auxiliary swing arm group rotate relative to the shaft cover, so as to drive the two connecting members to rotate through the sliding members of the two auxiliary swing arms in the auxiliary swing arm group.

6. The rotating shaft structure according to claim 1, characterized in that: The rotating shaft structure also includes a synchronization mechanism that is rotatably connected to the shaft cover and slidably and rotatably connected to the connecting member, the synchronization mechanism includes two synchronization members, the synchronization members include a synchronization swing arm and a gear, the gears of the two synchronization members are meshed with each other, and the synchronization swing arms of the two synchronization members are respectively arranged on both sides of the two meshed gears; The gear is rotatably connected to the shaft cover via a gear shaft, and first convex columns are provided on both side walls of the synchronous swing arm away from the end of the gear; The connecting member is provided with a third connecting slot adapted to the synchronous swing arm, and the side wall of the third connecting slot is partially recessed to form a first groove adapted to the first boss, and the first boss slides and rotates in the first groove to enable the synchronous mechanism to be slidably and rotatably connected to the connecting member.

7. The rotating shaft structure according to any one of claims 1 to 6, characterized in that: The foldable terminal further includes a flexible screen located on one side of the first body, the hinge structure and the second body; The rotating shaft structure also includes a supporting door plate, which is fixedly connected to the rotating mechanism and rotates along with the rotation of the rotating mechanism. The supporting door plate is used to support the flexible screen.

8. The rotating shaft structure according to any one of claims 1 to 6, characterized in that: The rotating shaft structure also includes a decorative door panel, which is fixedly connected to the rotating mechanism and rotates along with the rotation of the rotating mechanism. The decorative door panel is used to shield the rotating mechanism, the synchronization mechanism and / or the damping mechanism.

9. The rotating shaft structure according to any one of claims 1 to 8, characterized in that: The number of the pin shaft, the number of the cam wheel and the first spring is two, and the number of the damping swing arms is four; The two pins are arranged side by side along the first direction, and the pins extend along the second direction. The concave wheel has two concave wheel holes, and the two concave wheel holes are arranged side by side along the first direction. The concave wheels are respectively sleeved on the two pins through the two concave wheel holes, and there is a gap between the two concave wheels. The two first springs are respectively sleeved on the two pins and are respectively located at the gap between the two concave wheels. The rotating cams of the two damping swing arms are arranged adjacent to one of the concave wheels and are located on the side of the concave wheel away from the first spring along the second direction. The rotating cams of the other two damping swing arms are arranged adjacent to the other concave wheel and are located on the side of the concave wheel away from the first spring along the second direction. Second convex columns are provided on both side walls of the end of the swinging member away from the rotating cam, a fifth connecting slot adapted to the damping swing arm is provided on the connecting member, and the side wall of the fifth connecting slot is partially recessed to form a second groove adapted to the second convex column, and the second convex column slides and rotates in the second groove, so that the damping mechanism is connected to the connecting member in a sliding and rotating manner; The first direction is the direction from the first body to the second body, and the second direction is the axial direction of the rotating shaft structure.

10. A foldable terminal, characterized in that: The foldable terminal is an outward-folding foldable terminal, and the outward-folding foldable terminal comprises the hinge structure according to any one of claims 1 to 9.

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