Rotating shaft structure and folding electronic equipment

Abstract

The invention provides a rotating shaft structure and folding type electronic equipment. Large damping force can be guaranteed under the condition that the rotating shaft structure and the folding type electronic equipment are thinned. The rotating shaft structure comprises a first middle beam, a door plate and a damping mechanism; the damping mechanism comprises a constraint part, two compression parts and a first elastic part; the two compression parts are located on the door plate and slidably connected with the door plate, the two compression parts are opposite, and the first elastic part is located between the two opposite compression parts; the restraining part is rotationally connected with the first middle beam and slidably connected with the door plate. The restraining part is provided with a containing cavity, the door plate is covered with the restraining part, and at least partial areas of the two compression parts and the first elastic part are located in the containing cavity; two inner surfaces of one end of the accommodating cavity are inclined surfaces; when the restraining part slides on the door plate, the two compression parts move on the two slopes correspondingly, and the two compression parts get close to each other or get away from each other. When the two compression parts get close to each other, the first elastic part is compressed, and the two slopes bear force perpendicular to the slopes and generated by the compression of the first elastic part on the slopes.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a hinge structure and a foldable electronic equipment. Background Art

[0002] With the continuous development of display technology, foldable electronic devices (such as foldable mobile phones) have gradually become a development trend of future mobile electronic products. When unfolded, foldable electronic devices 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.

[0003] The structure that enables the foldable electronic device to unfold or fold is a hinge structure with a damping function (providing an opening and closing feel). With the trend of electronic devices becoming thinner and lighter, how to ensure a larger damping force while reducing the thickness of the hinge structure is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a hinge structure and a foldable electronic device. The hinge structure can ensure a larger damping force while being thinner.

[0005] In a first aspect, an embodiment of the present application provides a shaft structure, which includes: at least one shaft member; the shaft member includes a first center beam, a door panel and a damping mechanism; the first center beam extends along a first direction; along a second direction, the door panel is located on at least one side of the first center beam, and the second direction is different from the first direction; the damping mechanism includes a constraint portion, two compression portions and a first elastic portion; the two compression portions are located on the door panel and are both slidably connected to the door panel, and the sliding direction of the compression portion is the first direction; along the first direction, the two compression portions are opposite, and the first elastic portion is located between the two opposite compression portions; the constraint portion is rotatably connected to the first center beam , slidably connected to the door panel, the sliding direction of the constraint part is the second direction; the constraint part has a receiving cavity, and the constraint part cover is arranged on the door panel, so that at least part of the area of ​​the two compression parts and the first elastic part is located in the receiving cavity; along the second direction, the two inner surfaces of one end of the receiving cavity are inclined surfaces; when the constraint part slides on the door panel along the second direction, the two compression parts move on the two inclined surfaces respectively, and the two compression parts approach each other or move away from each other along the first direction; when the two compression parts approach each other along the first direction, the first elastic part is compressed, and the two inclined surfaces are both subjected to the force perpendicular to the inclined surfaces generated by the first elastic part when it is compressed.

[0006] Exemplarily, the first elastic part may be a spring (also referred to as a first spring).

[0007] Exemplarily, the first direction is perpendicular to the second direction.

[0008] Exemplarily, the first direction may be the Y-axis direction in the following content, and the second direction may be the X-axis direction in the following content.

[0009] Exemplarily, the inclined plane has an angle with the second direction, that is, the inclined plane is not parallel to the second direction, and the force perpendicular to the inclined plane can be decomposed into a radial force (perpendicular to the first center beam), and the radial force has a damping torque relative to the rotation center of the damping mechanism (the rotation center of the damping mechanism when it rotates relative to the first center beam).

[0010] In the present application, since the receiving cavity has two inclined surfaces, both inclined surfaces can generate damping torque, so that the shaft structure of the present application has a larger damping torque. In addition, since the length direction of the first elastic part is the first direction and the compression part that compresses the first elastic part is arranged in the first direction, the occupation of the door panel by the first elastic part and the compression part in the second direction can be reduced while ensuring that the length of the first elastic part remains unchanged (the elastic force remains unchanged), and the size of the door panel in the second direction is reduced, which is conducive to the miniaturization design of the shaft structure. That is, the shaft structure can ensure a larger damping force in a smaller volume. In addition, by limiting the first elastic member in the thickness direction through the constraint portion that compresses the first elastic member, compared with setting the first elastic member alone in a limiting box (in the thickness direction, the limiting box includes a bottom plate and a cover plate, and the spring is limited by the bottom plate and the cover plate), the structure can be simplified, and the size of the damping mechanism in the thickness direction can be reduced, so that the thickness of the shaft structure is thinner, and a larger damping force is guaranteed at a thinner thickness without losing the torsional feel; or, when the thickness of the shaft structure remains unchanged, the size of the first elastic member in the thickness direction can be increased, that is, the thickness of the first elastic member is increased (the force of the spring increases in direct proportion to the thickness), and the damping torque of the damping mechanism is increased. Thereby, a greater damping force is generated in the rotation process of the damping swing arm. The damping swing arm can be more stably suspended at any position during the rotation process, and the damping feedback when the user rotates the damping swing arm is improved, and the user's feel when rotating the damping swing arm is enhanced.

[0011] According to the first aspect, along the third direction, the first elastic part includes an upper surface and a lower surface, the upper surface is located on the side of the lower surface away from the door panel, and the third direction is perpendicular to the first direction and to the second direction; along the second direction, the upper surface of the end of the first elastic part close to the first center beam is an arc surface, and the vertical distance from the arc surface to the lower surface gradually decreases in the direction from the end of the first elastic part away from the first center beam to the end of the first elastic part close to the first center beam.

[0012] Exemplarily, the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0013] With this arrangement, even if the first elastic member is disposed at the end of the door panel close to the first center beam, it will not interfere with some structures, and the size of the door panel in the second direction can be reduced, further reducing the size of the shaft structure in the second direction.

[0014] According to the first aspect, or any implementation of the first aspect above, along the third direction, the first elastic part includes an upper surface and a lower surface, the upper surface is located on the side of the lower surface away from the door panel, and the third direction is perpendicular to the first direction and perpendicular to the second direction; along the second direction, the upper surface of the end of the first elastic part close to the first center beam is an inclined surface, and the vertical distance from the inclined surface to the lower surface gradually decreases in the direction from the end of the first elastic part away from the first center beam to the end of the first elastic part close to the first center beam.

[0015] Exemplarily, the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0016] With this arrangement, even if the first elastic member is disposed at the end of the door panel close to the first center beam, it will not interfere with some structures, and the size of the door panel in the second direction can be reduced, further reducing the size of the shaft structure in the second direction.

[0017] According to the first aspect, or any implementation of the first aspect above, when the upper surface of the first elastic portion near one end of the first center beam is a curved surface, the area on the upper surface of the first elastic portion that is not a curved surface and the curved surface are connected by a curved surface; when the upper surface of the first elastic portion near one end of the first center beam is a sloped surface, the area on the upper surface of the first elastic portion that is not a sloped surface and the sloped surface are connected by a curved surface.

[0018] This arrangement can make the elastic force of the first elastic member larger.

[0019] According to the first aspect, or any implementation of the first aspect above, the curvature radius of the projection of the curved surface on the reference surface is greater than or equal to 0.3 mm, and the reference surface is perpendicular to the first direction.

[0020] Exemplarily, the reference plane may be a plane formed by the X-axis direction and the Z-axis direction.

[0021] By optimizing the size of the first elastic member (such as optimizing the curvature radius R of the projection of the curved surface of the first elastic member on the plane formed by the X-axis and the Z-axis, etc.), even if a partial area of ​​the first elastic member is incomplete (an inclined surface or an arc surface), it will not affect the elastic force value of the first elastic member, that is, the elastic force value of the first elastic member when the upper surface of one end of the first elastic member close to the first center beam is set as a arc surface and the elastic force value of the first elastic member when the upper surface of one end of the first elastic member close to the first center beam is set as an inclined surface is basically the same as the elastic force value of an ordinary spring, and no yield deformation will occur.

[0022] According to the first aspect, or any implementation of the first aspect above, a vertical distance from an edge of the arc surface or the inclined surface of the first elastic portion close to the first middle beam to the lower surface is greater than or equal to 0.4 mm.

[0023] By optimizing the size of the first elastic member (such as optimizing the vertical distance from the edge of the arc surface or inclined surface of the first elastic member close to the first center beam to the lower surface, etc.), even if a partial area of ​​the first elastic member is incomplete (an inclined surface or an arc surface), it will not affect the elastic force value of the first elastic member, that is, the elastic force value of the first elastic member when the upper surface of one end of the first elastic member close to the first center beam is set as a arc surface and the elastic force value of the first elastic member when the upper surface of one end of the first elastic member close to the first center beam is set as an inclined surface is basically the same as the elastic force value of an ordinary spring, and no yield deformation will occur.

[0024] According to the first aspect, or any implementation of the first aspect above, along the second direction, both sides of the first elastic part are provided with blocking parts, and the first elastic part is limited in the second direction, so that the structure is more stable.

[0025] According to the first aspect, or any implementation of the first aspect above, the compression part includes a bearing plate, and along the third direction, the bearing plate includes a first surface, a boss is provided on the first surface, a rotating ring is sleeved on the boss, and can rotate relative to the boss, and the third direction is different from the first direction and the second direction. When the constraint part slides on the door panel along the second direction, the two rotating rings in the two compression parts move on the two inclined planes respectively.

[0026] With this arrangement, when the compression part moves on the inclined surface, the friction with the inclined surface is reduced.

[0027] Exemplarily, the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0028] According to the first aspect, or any implementation of the first aspect above, along the third direction, the bearing plate further includes a second surface, which is opposite to the first surface, and a convex column is also provided on the second surface, and a sliding groove adapted to the convex column on the second surface is provided on the door panel, so that the compression part is slidably connected to the door panel; a retaining wall is provided at the end of the first surface, and along the second direction, the retaining walls of the two compression parts are opposite, and the first elastic part is located between the two opposite retaining walls. The bearing plate has a simple structure and a small volume, which is conducive to the miniaturized design of the shaft structure.

[0029] Exemplarily, the sliding groove extends along the first direction.

[0030] According to the first aspect, or any implementation of the first aspect above, the constraint part includes a swing arm base, the swing arm base is a structure formed by protrusions in a third direction at two opposite ends of a flat plate-shaped base along a first direction, and a first groove is formed between the two protrusions, and the third direction is different from the first direction and the second direction; the constraint part also includes a constraint swing arm and a boss; along the second direction, the constraint swing arm and the boss are fixed on two opposite side walls of the swing arm base; the constraint swing arm is rotatably connected to the first middle beam so that the constraint part is rotatably connected to the first middle beam; the number of bosses can be two, and along the first direction, the two bosses are located at two opposite ends of a side wall of the swing arm base; the boss includes a shielding sub-portion extending along the first direction and an enclosure sub-portion extending along the third direction, one end of the shielding sub-portion is connected to one end of the enclosure sub-portion to form a slot; the shielding sub-portion is located at a position where there is no protrusion on the side wall, and the enclosure sub-portion is located on the side wall of the protrusion; the enclosure sub-portions of the two bosses are opposite, and the two slot openings are opposite, and the two slots are both connected to the first groove to form a receiving cavity.

[0031] This arrangement can not only compress the first elastic member, but also limit the first elastic portion in the third direction without separately setting a structure for limiting the first elastic member, thereby simplifying the structure of the shaft structure and reducing the thickness of the shaft structure.

[0032] According to the first aspect, or any implementation of the first aspect above, the enclosure sub-part includes an inner surface and an outer surface along the first direction, and also includes an outer wall and an inner wall connecting the inner surface and the outer surface and facing each other along the second direction, the inner wall is connected to the swing arm base, and the connection between the outer wall and the inner surface is an inclined surface. That is, only a part of the area is an inclined surface, which facilitates the preparation of the enclosure sub-part.

[0033] According to the first aspect, or any implementation of the first aspect above, the restraining part further includes two first sliders, and along the first direction, the two first sliders are located on two opposite side walls of the swing arm base; a connecting slide groove adapted to the two first sliders is provided on the door panel, so that the restraining part is slidably connected to the door panel. The structure of the slidable connection between the restraining part and the door panel is simple.

[0034] According to the first aspect, or any implementation of the first aspect above, the side wall of the swing arm base is partially recessed at a position where the boss is not set to form at least one first threaded hole; the damping mechanism also includes a first locking portion; along the second direction, a local area of ​​one end of the first locking portion is raised and bent to form a first locking sub-portion, and a fixing hole is opened on the first locking sub-portion, and the fixing hole on the first locking sub-portion is opposite to the first threaded hole; a screw passes through the fixing hole on the first locking sub-portion and is inserted into the first threaded hole to fix the first locking portion and the constraint portion.

[0035] The rotating shaft decoration (shading rotating shaft structure) can be fixed by the first locking portion, so that the electronic device using the rotating shaft structure has a better appearance.

[0036] According to the first aspect, or any implementation of the first aspect above, the constraint portion further includes two second sliders, which are located on two opposite side walls of the swing arm base along the first direction; along the first direction, the opposite two ends of the first locking portion are bent, and a locking slide groove is formed between the bent portion and the unbent portion; the two second sliders are respectively located in the two locking slide grooves. This prevents the first locking portion from shaking in the third direction, making the shaft structure more stable and reliable.

[0037] According to the first aspect, or any implementation of the first aspect above, the shaft structure includes at least two shaft members; the shaft structure also includes at least one connecting member; along the first direction, at least one connecting member is provided between two adjacent shaft members, and the connecting member is fixedly connected to the shaft member. The shaft structure is composed of different components, and some components have the same structure, so that the preparation of the shaft structure is convenient, the process steps are simplified, and the design and production costs are reduced.

[0038] According to the first aspect, or any implementation of the first aspect above, the connecting member includes a second middle beam and a supporting mechanism; the supporting mechanism is rotatably connected to the second middle beam. The supporting mechanism can support the middle area of ​​the flexible display screen of the foldable electronic device to prevent problems such as dents, making the flexible display screen flatter.

[0039] According to the first aspect, or any implementation of the first aspect, the rotation center of the support mechanism when rotating relative to the second center beam coincides with the rotation center of the constraint portion when rotating relative to the first center beam. The shaft structure is more stable when rotating, and no shaking problem occurs.

[0040] According to the first aspect, or any implementation of the first aspect above, the support mechanism includes a support portion; the support portion includes a support base; along the second direction, the support base is provided with a second threaded hole penetrating two side walls; a screw is locked in the second threaded hole; a second elastic member and a sphere are provided in the second threaded hole, and the second elastic member is located between the screw and the sphere; a pit is provided on the second middle beam; when the sphere contacts the second middle beam, the second elastic member is compressed until a part of the sphere is located in the pit. This arrangement can further enhance the damping torque, which is beneficial to the arbitrary hovering of the foldable electronic device, etc.

[0041] According to the first aspect, or any implementation of the first aspect above, the support mechanism also includes a second locking portion; along the third direction, the second locking portion is located on one side of the support base, and along the second direction, a local area of ​​one end of the second locking portion is raised and bent to form a second locking sub-portion, and a fixing hole is provided on the second locking sub-portion, and the fixing hole of the second locking sub-portion is opposite to the second threaded hole; the screw passes through the fixing hole of the second locking sub-portion and is inserted into the second threaded hole to fix the second locking portion and the support portion.

[0042] The rotating shaft decoration (shading rotating shaft structure) can be fixed by the second locking portion, so that the electronic device using the rotating shaft structure has a better appearance.

[0043] According to the first aspect, or any implementation of the first aspect above, the support mechanism also includes a swing arm slide assembly, which is slidingly connected to the support base; and is fixedly connected to the first body and the second body of the foldable electronic device through the swing arm slide assembly.

[0044] That is, the fixed connection between the connecting part and the middle frame of the fuselage can be achieved directly by disassembling the parts through a swing arm slide, which has a simple structure and low cost.

[0045] According to the first aspect, or any implementation of the first aspect above, the support part also includes a third slider; a connecting groove adapted to the support base is provided on the swing arm slide component, and the side wall of the connecting groove of the swing arm slide component is partially recessed to form a groove adapted to the third slider, so that the swing arm slide component is slidably connected to the support base; at least one fixing hole is provided in the area of ​​the swing arm slide component where the connecting groove is not provided; and the swing arm slide component is fixedly connected to the first body and the second body of the foldable electronic device through the fixing hole of the swing arm slide component.

[0046] In a second aspect, an embodiment of the present application provides a foldable electronic device, which includes a hinge structure corresponding to the first aspect and any implementation method of the first aspect.

[0047] The second aspect and any implementation of the second aspect correspond to the first aspect and any implementation of the first aspect respectively. The technical effects corresponding to the second aspect and any implementation of the second aspect can refer to the technical effects corresponding to the above-mentioned first aspect and any implementation of the first aspect, which will not be repeated here.

[0048] According to the second aspect, the foldable terminal also includes a first body, a second body and a flexible display screen; the hinge structure is fixedly connected to the first body and the second body through the door panel; the flexible display screen is located on one side of the first body, the second body and the hinge structure, and the flexible display screen is supported by the first body, the second body and the hinge structure.

[0049] According to the second aspect, or any implementation of the second aspect, the foldable electronic device is an outward-foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application;

[0051] Figure 2 Shown is a schematic diagram of a foldable mobile phone after being folded;

[0052] Figure 3 for Figure 1 A cross-sectional view of the foldable electronic device along the AA' direction;

[0053] Figure 4 A schematic structural diagram of a rotating shaft structure provided in an embodiment of the present application;

[0054] Figure 5 A schematic diagram of the front structure of a rotating shaft structure, a first middle frame and a second middle frame provided in an embodiment of the present application;

[0055] Figure 6 A schematic diagram of the back structure of a rotating shaft structure, a first middle frame and a second middle frame provided in an embodiment of the present application;

[0056] Figure 7 A schematic diagram of the structure of a rotating shaft provided in an embodiment of the present application;

[0057] Figure 8 A schematic diagram of the structure of a door panel provided in an embodiment of the present application at a certain viewing angle;

[0058] Fig. 9 A schematic diagram of the structure of a first middle beam provided in an embodiment of the present application;

[0059] Fig.10 A schematic diagram of the structure of a door panel connector provided in an embodiment of the present application;

[0060] Fig.11 A schematic diagram of the structure of a connecting portion provided in an embodiment of the present application;

[0061] Fig.12 A diagram showing the connection relationship between the door panel, the door panel connector and the first center beam provided in an embodiment of the present application;

[0062] Fig.13 A schematic diagram of the structure of a synchronization mechanism provided in an embodiment of the present application;

[0063] Fig.14 A schematic diagram of the structure of a door panel provided in an embodiment of the present application from another perspective;

[0064] Fig.15a A schematic diagram of the front structure of the first compression part and the second compression part provided in an embodiment of the present application;

[0065] Fig.15b A schematic diagram of the back structure of the first compression part and the second compression part provided in the embodiment of the present application;

[0066] Fig.16 A schematic diagram of the structure of a compression part provided in an embodiment of the present application without a rotating ring;

[0067] Fig.17a A positional relationship diagram of a door panel and a compression part provided in an embodiment of the present application;

[0068] Fig.17b A position relationship diagram of a door panel, a compression part and a first spring provided in an embodiment of the present application;

[0069] Fig.18 A schematic diagram of the structure of a restraining part provided in an embodiment of the present application at a certain viewing angle;

[0070] Fig.19 A schematic diagram of the structure of the restraining portion provided in an embodiment of the present application from another perspective;

[0071] Fig. 20 A schematic diagram of the structure of a first locking portion provided in an embodiment of the present application;

[0072] Fig.21 A diagram showing the positional relationship between the restraining portion and the first locking portion provided in an embodiment of the present application;

[0073] Fig. 22 A position relationship diagram of a door panel and a damping member provided in an embodiment of the present application;

[0074] Fig.23 A schematic diagram of a damping mechanism according to an embodiment of the present application providing a damping force;

[0075] Fig.24 A schematic diagram of the structure of a first spring provided in an embodiment of the present application;

[0076] Fig.25 A schematic diagram of the structure of a door panel provided in an embodiment of the present application from another perspective;

[0077] Fig.26 A position relationship diagram of a swing arm base, a restraining swing arm, a first spring and a door panel in a folded state provided in an embodiment of the present application;

[0078] Fig. 27 A position relationship diagram of another swing arm base, a restraining swing arm, a first spring and a door panel in a folded state provided in an embodiment of the present application;

[0079] Fig.28 Another position relationship diagram of the swing arm base, the restraining swing arm, the first spring and the door panel in the folded state provided in the embodiment of the present application;

[0080] Fig.29a A schematic diagram of the structure of the first spring of an embodiment of the present application during simulation is shown;

[0081] Fig.29b A comparative simulation diagram of the related art and the embodiment of the present application is shown;

[0082] Fig.30 A schematic diagram of the front structure of a connector provided in an embodiment of the present application;

[0083] Fig.31 A schematic diagram of the back structure of a connector provided in an embodiment of the present application;

[0084] Fig.32 A structural schematic diagram of a support mechanism provided in an embodiment of the present application;

[0085] Fig.33 A schematic diagram of the structure of the support portion provided in an embodiment of the present application at a certain viewing angle;

[0086] Fig.34 A schematic structural diagram of a support portion provided in an embodiment of the present application from another perspective;

[0087] Fig.35 A schematic diagram of the back structure of the connector provided in the embodiment of the present application when no connecting plate is provided;

[0088] Fig.36 A schematic diagram of the structure of a swing arm slideway disassembly provided in an embodiment of the present application;

[0089] Fig.37 for Fig.30 A cross-sectional view of the connecting member along the BB' direction;

[0090] Fig.38 A position relationship diagram of the second middle beam and the support base when the angle between the plane where the first support member of the first middle frame is located and the plane where the second support member of the second middle frame is located is a first angle provided in an embodiment of the present application;

[0091] Fig.39 A positional relationship diagram of the second middle beam and the support base when the angle between the plane where the first support member of the first middle frame is located and the plane where the second support member of the second middle frame is located is a second angle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0098] The embodiment of the present application provides a foldable electronic device. The foldable electronic device provided in the embodiment of the present application 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 limit the specific form of the above foldable electronic device. For the convenience of description, the following description is based on the example that the foldable electronic device is a foldable mobile phone.

[0099] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application. Figure 1 As shown, the foldable mobile phone 100 includes a flexible display screen (also called a foldable screen or a flexible screen) 10.

[0100] The flexible display screen 10 is a display screen with flexibility. The flexible display screen 10 may include 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 may 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 flexible display screens 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 this application. For example, it may 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.

[0101] 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.

[0102] Continue to see Figure 1 The foldable mobile phone 100 further 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 flexible display screen 10. The first body 20 and the second body 30 can rotate around the hinge structure 40 respectively, so that the flexible display screen 10 is in a folded or unfolded state, that is, the foldable mobile phone 100 is in a folded or unfolded state.

[0103] The flexible display screen 10 can be divided into different parts. When folded, the part of the flexible display screen 10 that is bent is the bent display segment 12. Along the X-axis direction, the parts on both sides of the bent display segment 12 in the flexible display screen 10 are respectively the first straight display segment 11 and the second straight display segment 13. When the foldable mobile phone 100 is in the process of changing from the unfolded state to the folded state, the angle between the plane where the first straight display segment 11 is located and the plane where the second straight display segment 13 is located changes with the bending of the bent display segment 12, for example, from 180° to 0°.

[0104] It can be understood that the foldable mobile phone 100 includes two states during use, namely, a folded state and an unfolded state. In the unfolded state, the first body 20 and the second body 30 are roughly located in the same plane, so that the flexible display screen 10 is roughly flat, and the user can operate the flexible display screen 10, and the flexible display screen 10 can display information such as images or videos to achieve a large screen display and improve the user's viewing experience. When the foldable mobile phone 100 is in the unfolded state, the first body 20 and the second body 30 can rotate toward each other (that is, the first body 20 and the second body 30 rotate relative to each other), thereby driving the hinge structure 40 to fold. During the folding process, the ends of the first body 20 and the second body 30 away from the hinge structure 40 approach each other until they touch, and the foldable mobile phone 100 is in the folded state at this time. In this folded state, the foldable mobile phone 100 is easy to store and carry. When the foldable mobile phone 100 is in the folded state, the first body 20 and the second body 30 can rotate (the rotation direction is opposite to the rotation direction when folded), thereby driving the hinge structure 40 to unfold, so that the foldable mobile phone 100 is in the unfolded state. Therefore, in the present application, the hinge structure 40 is used to realize the folding and unfolding of the foldable mobile phone 100.

[0105] It should be noted that the foldable mobile phone 100 can be folded at multiple positions, and accordingly, the foldable mobile phone 100 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 foldable mobile phone 100 including a hinge structure 40 and two fuselages (i.e., the first fuselage 20 and the second fuselage 30) as an example.

[0106] It should also be noted that Figure 1 and Figure 2The description is based on the example that the foldable mobile phone 100 is folded along the longitudinal direction (i.e., the Y-axis direction), that is, the foldable mobile phone 100 forms two left and right screens when folded, but it does not constitute a limitation on the present application. In other optional embodiments of the present application, the foldable mobile phone 100 can also be folded along the transverse direction (i.e., the X-axis direction), that is, the foldable mobile phone 100 forms two upper and lower screens when folded. The following content is based on the example that the foldable mobile phone 100 is folded along the longitudinal direction.

[0107] 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 after being folded. Figure 2 In the embodiment, when the foldable mobile phone 100 is folded, it can face the light emitting direction away from the flexible display screen 10 ( Figure 1 The foldable mobile phone 100 can be folded in the direction indicated by the arrow in the middle, 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 display screen 10. In this case, the foldable mobile phone 100 can also be called an outward-folding foldable mobile phone. Of course, when the foldable mobile phone 100 is folded, it can also be folded in the light emitting direction of the flexible display screen 10, 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 the same as the light emitting direction of the flexible display screen 10. In this case, the foldable mobile phone 100 can also be called an inward-folding foldable mobile phone. The embodiment of the present application takes the foldable mobile phone 100 as an outward-folding foldable mobile phone as an example for explanation.

[0108] See also Figure 3 , Figure 3 for Figure 1 The cross-sectional view of the foldable electronic device along the AA' direction is shown. Figure 3 As shown, the first body 20 includes a first housing 21 and a first middle frame 22. The second body 30 includes a second housing 31 and a second middle frame 32.

[0109] The first housing 21 may be a back cover (also called a battery cover) of the foldable mobile phone 100; or a display screen for displaying, which is not limited in the present embodiment. The second housing 31 may be a back cover (also called a battery cover) of the foldable mobile phone 100; or a display screen for displaying, which is not limited in the present embodiment.

[0110] The first middle frame 22 includes a first appearance member (a structure exposed to the outside of the first middle frame 22) 221 and a first support member 222 located between the first flat display segment 11 and the first housing 21, and the first appearance member 221 is fixedly connected to the first support member 222, wherein the first appearance member 221 and the first support member 222 can be integrally formed or separately formed, and then fixed together by welding or bonding. The second middle frame 32 includes a second appearance member (a structure exposed to the outside of the second middle frame 32) 321 and a second support member 322 located between the second flat display segment 13 and the second housing 31, and the second appearance member 321 is fixedly connected to the second support member 322, wherein the second appearance member 321 and the second support member 322 can be integrally formed or separately formed, and then fixed together by welding or bonding.

[0111] The first flat display segment 11 of the flexible display screen 10, the first appearance member 221, and the first housing 21 form a first accommodating cavity 23, and the second flat display segment 13 of the flexible display screen 10, the second appearance member 321, and the second housing 31 form a second accommodating cavity 33. The first accommodating cavity 23 and the second accommodating cavity 33 are provided with structures such as a printed circuit board, a flexible circuit board, functional devices, and a battery (not shown in the figure), wherein the functional devices include, for example, a processing module, a voltage conversion module, etc. The flexible display screen 10 and some structures in the accommodating cavity are supported by the first support member 222 of the first middle frame 22 and the second support member 322 of the second middle frame 32. For example, the flexible display screen 10 can be bonded to the first support member 222 of the first middle frame 22 and the second support member 322 of the second middle frame 32 by means of a backing adhesive (not shown in the figure), and the flexible display screen 10 is supported by the first support member 222 and the second support member 322 of the second middle frame 32.

[0112] As can be seen from the above content, the hinge structure 40 is an important component for folding or unfolding the foldable electronic device. Usually, the hinge structure 40 has a damping mechanism, so that the foldable electronic device is subjected to the damping force provided by the damping mechanism during the folding and unfolding process, so that the first body 20 and the second body 30 of the foldable electronic device can hover at any angle, while improving the operational feel of folding or unfolding, or making the foldable electronic device stably maintain in the folded position or unfolded position.

[0113] However, with the trend of electronic devices becoming thinner and lighter, the space for foldable electronic devices to accommodate the hinge structure 40 is getting smaller and smaller. The damping mechanism is limited by the space and it is difficult to provide a sufficient damping force, so that when the first body 20 and the second body 30 rotate relative to each other, it is difficult for them to stably hover at any rotation position. At the same time, when the user rotates the first body 20 and the second body 30, it is difficult to obtain a sufficiently large damping feedback, which reduces the user's feel when using the foldable electronic device.

[0114] Based on this, an embodiment of the present application provides a shaft structure, which has a thin thickness and ensures a larger damping force at a thin thickness without losing the torque feel.

[0115] The specific structure of the rotating shaft structure provided in the embodiment of the present application is introduced below.

[0116] See also Figure 4 , Figure 4 This is a schematic diagram of a rotating shaft structure provided in an embodiment of the present application. Figure 4 As shown, the shaft structure 40 includes at least two shaft members 40a and at least one connecting member 40b, and a connecting member 40b is arranged between two adjacent shaft members 40a, wherein: Figure 4 The description is made by taking the rotating shaft structure 40 including two rotating shaft members 40a and one connecting member 40b as an example.

[0117] The two rotating shaft members 40a include a first rotating shaft member 40a1 and a second rotating shaft member 40a2. The first rotating shaft member 40a1, the connecting member 40b and the second rotating shaft member 40a2 are arranged in sequence along the Y-axis direction. The connecting member 40b can be in a strip shape and can extend along the Y-axis direction. One end of the connecting member 40b is connected to the first rotating shaft member 40a1, and the other end is connected to the second rotating shaft member 40a2. The first rotating shaft member 40a1 and the second rotating shaft member 40a2 have the same structure and are symmetrically arranged about the connecting member 40b. The first rotating shaft member 40a1 and the second rotating shaft member 40a2 have the same structure, so that the preparation of the rotating shaft structure 40 is convenient, the process steps are simplified, and the design and production costs are reduced.

[0118] See also Figure 5 and Figure 6 , Figure 5 This is a front structural diagram of a rotating shaft structure, a first middle frame, and a second middle frame provided in an embodiment of the present application. Figure 6 This is a schematic diagram of the back structure of a rotating shaft structure, a first middle frame and a second middle frame provided in an embodiment of the present application. Figure 5 and Figure 6As shown, along the X-axis direction, the first middle frame 22 and the second middle frame 32 are respectively located on both sides of the hinge structure 40, and the first hinge member 40a1, the connecting member 40b and the second hinge member 40a2 are respectively fixedly connected to the first middle frame 22 and the second middle frame 32 (which will be described below and will not be repeated here). The flexible display screen 10 can be arranged on the back of the hinge structure 40, the first middle frame 22 and the second middle frame 32, and the flexible display screen 10 is supported by the first middle frame 22, the hinge structure 40 and the second middle frame 32. The first shell 21 can be arranged on the front of the first middle frame 22, and the second shell 31 can be arranged on the front of the second middle frame 32 to form a first accommodating cavity 23 and a second accommodating cavity 33 for accommodating structures such as a printed circuit board, a flexible circuit board, functional devices and a battery.

[0119] In addition, in order to ensure that the foldable mobile phone 100 has a good appearance, and / or to protect the hinge structure 40, etc., the hinge structure 40 also includes a hinge decoration (not shown in the figure), which is located between the first shell 22 and the second shell 32. When the foldable mobile phone 100 is folded or unfolded, the hinge decoration is used to cover the hinge structure 40. In some embodiments, along the X-axis direction, the two edges of the hinge decoration extend to the bottom of the first shell 22 and the second shell 32 respectively, so that a gap between the hinge decoration and the first shell 22 is avoided, and a gap between the hinge decoration and the second shell 32 is avoided, further ensuring that the foldable mobile phone 100 has a good appearance, and / or protecting the hinge structure 40. It should be noted here that the two edges of the hinge decoration extend to the bottom of the first shell 22 and the second shell 32 respectively, which means that when the foldable mobile phone 100 is placed flat and the first shell 22 and the second shell 32 face upward (towards the user), the two edges of the hinge decoration are relative to the first shell 22 and the second shell 32.

[0120] See also Figure 7 , Figure 7 This is a schematic diagram of the structure of a rotating shaft provided in an embodiment of the present application. Figure 7As shown, the rotating shaft member 40a includes a first center beam 41, a rotating mechanism 42, a synchronization mechanism 43, a damping mechanism 44, two door panels 45 and two door panel connecting members 46, wherein the two door panels 45 are respectively a first door panel 451 and a second door panel 452, and the two door panel connecting members 46 are respectively a first door panel connecting member 461 and a second door panel connecting member 462. Along the X-axis direction, the first door panel 451 and the second door panel 452 are arranged on both sides of the first center beam 41, the first door panel connecting member 461 is located between the first door panel 451 and the first center beam 41, the first door panel connecting member 461 is rotatably connected to the first door panel 451 and the first center beam 41, the second door panel connecting member 462 is located between the second door panel 452 and the first center beam 41, and the second door panel connecting member 462 is rotatably connected to the second door panel 452 and the first center beam 41. Figure 5 The rotating shaft 40a is fixedly connected to the first middle frame 22 through the first door panel 451, and is fixedly connected to the second middle frame 32 through the second door panel 452.

[0121] Exemplary, combined Figure 8 , Figure 8 A schematic diagram of the structure of a door panel provided in an embodiment of the present application at a certain viewing angle. At least one first connecting hole 453 is provided on the first door panel 451 and the second door panel 452. The first door panel 451 is fixedly connected to the first fuselage 20 through the first connecting hole 453 thereon. For example, the first door panel 451 is fixedly connected to the first supporting member 222 of the first middle frame 22 through the first connecting hole 453 thereon to achieve a fixed connection with the first fuselage 20; the second door panel 452 is fixedly connected to the second fuselage 30 through the first connecting hole 453 thereon. For example, the second door panel 452 is fixedly connected to the second supporting member 322 of the second middle frame 32 through the first connecting hole 453 thereon to achieve a fixed connection with the second fuselage 30, that is, the rotating shaft member 40a of the rotating shaft structure 40 is fixedly connected to the first middle frame 22 and the second middle frame 32 through the two door panels 45, thereby achieving connection with the first fuselage 20 and the second fuselage 30, so as to realize the folding or unfolding of the first fuselage 20 and the second fuselage 30 through the rotating shaft structure 40.

[0122] In some embodiments, see Figure 4 The rotating shaft member 40a further includes a first cover plate 41a, which is located on the first middle beam 41 along the Z-axis direction, such as on the side of the first middle beam 41 away from the flexible display screen 10. The first cover plate 41a is fixedly connected to the first middle beam 41, and can protect or enclose the structure on the first middle beam 41.

[0123] It should be noted that, in order to clearly show the first middle beam 41, the rotating mechanism 42, the synchronizing mechanism 43, the damping mechanism 44 and other structures of the rotating shaft structure 40, Figure 7The first cover plate 41 a is not shown (it will block parts of the first center beam 41 , the rotating mechanism 42 , the synchronizing mechanism 43 , and the damping mechanism 44 ).

[0124] See also Fig. 9 , Fig. 9 This is a schematic diagram of the structure of a first middle beam provided in an embodiment of the present application. Fig. 9 As shown, the first middle beam 41 may include a shaft cover 411 and a shaft body 412 connected to each other, and the shaft cover 411 is located on one side of the shaft body 412 along the Y-axis direction. The shaft cover 411 may be approximately an elliptical plate-like structure. The shaft cover 411 may be used as an appearance decoration of an outward-folding foldable mobile phone. The shaft body 412 may be strip-shaped or column-shaped as a whole, and its extension direction is the Y-axis direction. The interior of the shaft body 412 may be divided into a plurality of spaces, which are used to install the rotating mechanism 42, the synchronization mechanism 43 and the damping mechanism 44 (the following content will be described in detail and will not be repeated here).

[0125] Combination Figure 4 and Figure 6 The shaft covers 411 of the two rotating shaft members 40a can be arranged back to back along the Y-axis direction, and both shaft covers 411 can be exposed to the flexible display screen 10, that is, the two shaft covers 411 can be respectively located at two opposite outer sides of the flexible display screen 10 in the Y-axis direction.

[0126] Continue to see Figure 7 , the number of the rotating mechanisms 42 can be multiple. Exemplarily, the number of the rotating mechanisms 42 is two, and along the Y-axis direction, the two rotating mechanisms 42 are distributed on both sides of the damping mechanism 44, and can be symmetrically arranged with respect to the damping mechanism 44, and the synchronization mechanism 43 is located on a side of one of the rotating mechanisms 42 away from the damping mechanism 44, and is arranged adjacent to the connecting member 40b.

[0127] The rotating mechanism 42 includes two rotating swing arms 421 disposed on both sides of the first middle beam 41 along the X-axis direction. Fig.10 , Fig.10 A schematic diagram of the structure of a door panel connector provided in an embodiment of the present application. One of the rotating swing arms 421 is fixed to the first door panel connector 461. The rotating swing arm 421 and the first door panel connector 461 can be integrally formed or separately formed, and then fixed together by welding, bonding, etc.; the other rotating swing arm 421 is fixed to the second door panel connector 462. The rotating swing arm 421 and the second door panel connector 462 can be integrally formed or separately formed, and then fixed together by welding, bonding, etc. The rotating swing arm 421 includes a first swing piece 4211 and a second swing piece 4212 that are fixedly connected. The cross-sectional shapes of the first swing piece 4211 and the second swing piece 4212 are, for example, arc-shaped or approximately arc-shaped, that is, the projections of the first swing piece 4211 and the second swing piece 4212 on the plane formed by the X-axis and the Z-axis are both arc-shaped or approximately arc-shaped.

[0128] Continue to see Figure 7 , a connecting portion 453 is provided on both door panels 45, that is, a connecting portion 453 is provided on the first door panel 451, and a connecting portion 453 is provided on the second door panel 452. The connecting portion 453 on the first door panel 451 is fixedly connected to the first door panel 451, and the first door panel 451 and the connecting portion 453 can be integrally formed or separately formed, and then fixed together by welding, bonding, interference fit, etc.; the connecting portion 453 on the second door panel 452 is fixedly connected to the second door panel 452, and the second door panel 452 and the connecting portion 453 can be integrally formed or separately formed, and then fixed together by welding, bonding, interference fit, etc. The embodiment of the present application is described by taking the case where the door panel 45 and the connecting portion 453 are separately formed as an example.

[0129] See also Fig.11 , Fig.11 This is a schematic diagram of the structure of a connection portion provided in an embodiment of the present application. Fig.11 As shown, the connecting portion 453 includes a fixing sub-portion 4531 and a connecting sub-portion 4532 fixedly connected to the fixing sub-portion 4531. A cylindrical protruding sub-portion 4534 is provided on the fixing sub-portion 4531. Figure 8 The door panel 45 is provided with a circular third fixing hole 454, which can be a through hole or a blind hole. The diameter of the raised sub-portion 4534 is larger than the diameter of the third fixing hole 454, so that the raised sub-portion 4534 of the fixing sub-portion 4531 can be fixed in the third fixing hole 454 of the door panel 45 by interference fit, thereby achieving fixed connection between the connecting portion 453 and the door panel 45.

[0130] See also Fig.12 , Fig.12 This is a diagram showing the connection relationship between the door panel, the door panel connector and the first center beam provided in the embodiment of the present application. Fig.11 and Fig.12 As shown, the connecting sub-portion 4532 is provided with a first connecting slot 4533 adapted to the second swing member 4212, and at least part of the second swing member 4212 is located in the first connecting slot 4533, so as to be rotatably connected to the first door panel connecting member 461 through the first connecting slot 4533 of the first door panel 451, and to be rotatably connected to the second door panel connecting member 462 through the first connecting slot 4533 of the second door panel 452. Fig. 9 and Fig.12As shown, the first central beam 41 is provided with a first axle body groove 4121 adapted to the first swing piece 4211 of the first door panel connecting member 461 and a first axle body groove 4121 adapted to the first swing piece 4211 of the second door panel connecting member 462, at least part of the first swing piece 4211 of the first door panel connecting member 461 is located in one of the first axle body grooves 4121, and at least part of the first swing piece 4211 of the second door panel connecting member 462 is located in the other first axle body groove 4121, so as to realize the rotational connection between the first central beam 41 and the first door panel connecting member 461 and the second door panel connecting member 462. That is to say, the first door panel connecting member 461 is rotatably connected to the first center beam 41 and the first door panel 451 through the rotatable swing arm 421 thereon, and the second door panel connecting member 462 is rotatably connected to the first center beam 41 and the second door panel 452 through the rotatable swing arm 421 thereon, so that when the position of the first center beam 41 remains unchanged, the first door panel 451 and the second door panel 452 can rotate relative to the first center beam 41, thereby realizing the opening and closing of the first fuselage 20 and the second fuselage 30.

[0131] See also Fig.13 , Fig.13 A schematic diagram of the structure of a synchronization mechanism provided in an embodiment of the present application. Fig.13 As shown, the synchronization mechanism 43 includes two synchronization parts 431 arranged side by side along the X-axis direction, and the synchronization part 431 includes a synchronization swing arm 4311 and a gear 4312. The gears 4312 of the two synchronization parts 431 are meshed with each other, and the synchronization swing arms 4311 of the two synchronization parts 431 along the X-axis direction are arranged on both sides of the two meshed gears 4312.

[0132] 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. The two gears 4312 are meshed with each other through the gear portion 43121. Fig. 9 The first middle beam 41 is provided with a rotation hole 4122 adapted to the gear rotating part 43122, and the gear rotating parts 43122 of the two gears 4312 are inserted into the rotation hole 4122 one by one, so as to realize the rotation connection between the synchronization mechanism 43 and the first middle beam 41. Two fourth sliders 43111 are arranged opposite to each other along the Y-axis direction on the two side walls of the end of the synchronization swing arm 4311 away from the gear 4312.

[0133] See also Fig.14 , Fig.14 This is a schematic diagram of the structure of the door panel provided in the embodiment of the present application from another perspective. Fig.14As shown, a second connecting groove 455 adapted to the synchronous swing arm 4311 is provided on the door panel 45, and the side wall of the second connecting groove 455 is partially recessed to form a second groove 456 adapted to the two fourth sliders 43111. The fourth sliders 43111 slide in the second groove 456 to realize the sliding connection between the synchronization mechanism 43 and the door panel 45.

[0134] From the above content, it can be seen that the synchronization mechanism 43 slides with the door panel 45 through the fourth slider 43111, and realizes the synchronous rotation of the first door panel 451 and the second door panel 452 through the engagement of the gear 4312, thereby ensuring the synchronization of the first door panel 451 and the second door panel 452, and further ensuring the synchronization of the first fuselage 20 and the second fuselage 30.

[0135] It should be noted that the embodiment of the present application does not limit the number and location of the synchronization mechanism 43 in the rotating shaft 40a, 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 number of the synchronization mechanism 43 in the rotating shaft 40a as one as an example for description.

[0136] The damping mechanism 44 provides a damping force, so that the first body 20 and the second body 30 of the foldable mobile phone 100 can hover at any angle during the opening and closing process of the foldable mobile phone 100, and at the same time improve the operational feel of folding or unfolding, or make the foldable electronic device stably maintain the folded position or unfolded position. The embodiment of the present application does not limit the number of damping mechanisms 44 in the rotating shaft 40a, and those skilled in the art can set them according to actual conditions. Figure 7 In the embodiment of the present application, the number of the damping mechanism 44 in the rotating shaft 40a is one as an example for description.

[0137] The damping mechanism 44 includes two damping members 441 arranged along the X-axis direction, and the damping member 441 includes a restraining portion 4411, two compression portions 4412, a first spring 4413, and a first locking portion 4414. The two compression portions 4412 include a first compression portion 44121 and a second compression portion 44122 arranged opposite to each other along the Y-axis direction, and the first compression portion 44121 and the second compression portion 44122 are symmetrically arranged.

[0138] See also Fig.15a , Fig.15b and Fig.16 , Fig.15a This is a schematic diagram of the front structure of the first compression part and the second compression part provided in the embodiment of the present application. Fig.15b This is a schematic diagram of the back structure of the first compression part and the second compression part provided in the embodiment of the present application. Fig.16 This is a schematic diagram of the structure of a compression unit without a rotating ring provided in an embodiment of the present application. Fig.15a , Fig.15b and Fig.16 As shown, the compression portion 4412 includes a supporting plate 44123. Along the Z-axis direction, the supporting plate 44123 includes a first surface 44123a and a second surface 44123b opposite to each other. Bosses 44124 are arranged on the first surface 44123a and the second surface 44123b of the supporting plate 44123, wherein the number of the bosses 44124 on the first surface 44123a of the supporting plate 44123 may be one, and the number of the bosses 44124 on the second surface 44123b of the supporting plate 44123 may be two, and the bosses 44124 on the first surface 44123a of the supporting plate 44123 is sleeved with a rotating ring 44125, and the rotating ring 44125 can rotate relative to the bosses 44124 on the first surface 44123a.

[0139] A retaining wall 44126 is provided at the end of the first surface 44123a of the carrying plate 44123. Along the Y-axis direction, the retaining wall 44126 of the first compression part 44121 and the retaining wall 44126 of the second compression part 44122 are arranged opposite to each other. In order to avoid the rotating ring 44125, the retaining wall 44126 of the first compression part 44121 and the retaining wall 44126 of the second compression part 44122 are arc-shaped toward the side wall of the rotating ring 44125.

[0140] Combination Figure 8 The door panel 45 is provided with a first sliding groove 4571 adapted to the boss 44124 on the second surface 44123b of the first compression portion 44121, and a second sliding groove 4572 adapted to the boss 44124 on the second surface 44123b of the second compression portion 44122. The first sliding groove 4571 and the second sliding groove 4572 extend along the Y-axis direction, and along the Y-axis direction, the first sliding groove 4571 and the second sliding groove 4572 both include a first end 457a and a second end 457b. The second end 457b of the first sliding groove 4571 is located on a side of the first end 457a of the first sliding groove 4571 away from the first end 457a of the second sliding groove 4572, and the second end 457b of the second sliding groove 4572 is located on a side of the first end 457a of the second sliding groove 4572 away from the first end 457a of the first sliding groove 4571.

[0141] See also Fig.17a , Fig.17a This is a diagram showing the positional relationship between the door panel and the compression part provided in the embodiment of the present application. Fig.17aAs shown, the convex pillars 44124 on the second surface 44123b of the first compression part 44121 are inserted into the first sliding groove 4571 in a one-to-one correspondence, and the convex pillars 44124 on the second surface 44123b of the first compression part 44121 can move along the Y-axis direction in the corresponding first sliding groove 4571. The convex pillars 44124 on the second surface 44123b of the second compression part 44122 are inserted into the second sliding groove 4572 in a one-to-one correspondence, and the convex pillars 44124 on the second surface 44123b of the second compression part 44122 can move along the Y-axis direction in the corresponding second sliding groove 4572. And the retaining wall 44126 of the first compression part 44121 is opposite to the retaining wall 44126 of the second compression part 44122.

[0142] See also Fig.17b , Fig.17b The position relationship diagram of the door panel, the compression part and the first spring provided in the embodiment of the present application. Fig.17b As shown, the first spring 4413 is located between the first compression part 44121 and the second compression part 44122, and one end of the first spring 4413 contacts the retaining wall 44126 of the first compression part 44121, and the other end contacts the retaining wall 44126 of the second compression part 44122. When the first spring 4413 is arranged between the first compression part 44121 and the second compression part 44122, the first spring 4413 is in a compressed state, and due to the elastic force of the first spring 4413, the first compression part 44121 is located at the second end 457b of the first sliding groove 4571, and the second compression part 44122 is located at the second end 457b of the second sliding groove 4572. When the first compression part 44121 and the second compression part 44122 move toward each other (the following content will be introduced, and no further description will be given here), the first spring 4413 can be further compressed.

[0143] Continue to see Figure 8 and Fig.17a , Fig.17b In order to limit the position of the first spring 4413 in the X-axis direction, a blocking portion 458 is provided on the door panel 45 to block the first spring 4413. The door panel 45 and the blocking portion 458 can be formed in one piece or separately, and then fixed together by welding, bonding, etc. Along the X-axis direction, the blocking portion 458 includes a first blocking sub-portion 4581 and a second blocking sub-portion 4582 that are arranged opposite to each other. Along the X-axis direction, the first blocking sub-portion 4581 is located on the side of the second blocking sub-portion 4582 that is away from the first middle beam 41. The projections of the first blocking sub-portion 4581 and the second blocking sub-portion 4582 on the plane formed by the X-axis and the Y-axis are both in the shape of a "C", and the openings of the first blocking sub-portion 4581 and the second blocking sub-portion 4582 are opposite to each other.

[0144] See also Fig.18 and Fig.19, Fig.18 This is a schematic diagram of the structure of the constraint portion provided in an embodiment of the present application at a certain viewing angle. Fig.19 This is a schematic diagram of the structure of the constraint portion provided in the embodiment of the present application from another perspective. Fig.18 and Fig.19 As shown, the constraint part 4411 includes a swing arm base 44111, and the swing arm base 44111 is a structure formed by protrusions in the Z-axis direction at two opposite ends of a flat plate-shaped base along the Y-axis direction, and a first groove 44111a is formed between the two protrusions. The constraint part 4411 also includes a constraint swing arm 44112 and a boss 44113. Along the X-axis direction, the constraint swing arm 44112 and the boss 44113 are fixed on two opposite side walls of the swing arm base 44111. The swing arm base 44111, the constraint swing arm 44112 and the boss 44113 can be integrally formed or separately formed, and then fixed together by welding, bonding, etc.

[0145] The number of the constraining swing arms 44112 can be two. Along the Y-axis direction, the two constraining swing arms 44112 are located at two opposite ends of one side wall of the swing arm base 44111.

[0146] The number of the bosses 44113 can be two. Along the Y-axis direction, the two bosses 44113 are located at the opposite ends of the other side wall of the swing arm base 44111, and the position of the side wall where the boss 44113 is not set is partially recessed to form at least one first threaded hole 44116.

[0147] The boss 44113 includes a shielding sub-portion 44113a extending along the Y-axis direction and an enclosure sub-portion 44113b extending along the Z-axis direction. One end of the shielding sub-portion 44113a is connected to one end of the enclosure sub-portion 44113b to form a slot 44113c. The shielding sub-portion 44113a can be located at a position where there is no protrusion on the side wall, and the enclosure sub-portion 44113b can be located on the protruding side wall. The enclosure sub-portions 44113b of the two bosses 44113 are opposite to each other, and the openings of the two slots 44113c are opposite to each other. The slots 44113c of the two bosses 44113 are both connected to the first groove 44111a to form a large receiving cavity 44113d.

[0148] Continue to see Fig.18 The enclosure sub-portion 44113b includes an inner surface 44113b1 and an outer surface 44113b2 opposite to each other along the Y-axis direction, and also includes an outer side wall 44113b3 and an inner side wall (connected to the swing arm base 44111) connecting the inner surface 44113b1 and the outer surface 44113b2 and opposite to each other along the X-axis direction. The connection between the outer side wall 44113b3 and the inner surface 44113b1 is an inclined surface, that is, the outer side wall 44113b3 and the inner surface 44113b1 are connected by the inclined surface 44113b4.

[0149] The constraint portion 4411 also includes two first sliders 44114 and two second sliders 44115. Along the Y-axis direction, the two first sliders 44114 are located on two opposite side walls of the swing arm base 44111, and the two second sliders 44115 are also located on two opposite side walls of the swing arm base 44111. Along the Z-axis direction, the first slider 44114 and the second slider 44115 located on the same side wall are respectively located at opposite ends of the side wall.

[0150] See also Fig. 20 and Fig.21 , Fig. 20 A schematic diagram of the structure of a first locking portion provided in an embodiment of the present application, Fig.21 This is a diagram showing the positional relationship between the constraint portion and the first locking portion provided in the embodiment of the present application. Fig. 20 and Fig.21 As shown, along the Y-axis direction, the two opposite ends of the first locking portion 4414 are bent, and a locking slot 44141 is formed between the bent portion and the unbent portion. Along the Z-axis direction, the unbent portion of the first locking portion 4414 is located on the swing arm base 44111, and the two second sliders 44115 of the constraint portion 4411 are respectively located in the two locking slots 44141; in addition, along the X-axis direction, a local area of ​​one end of the first locking portion 4414 is raised and bent to form a first locking sub-portion 44142, and a first fixing hole 44143 is opened on the first locking sub-portion 44142, and the first locking sub-portion 44142 contacts the side wall of the swing arm base 44111 on which the boss 44113 is provided, and the first fixing hole 44143 on the first locking sub-portion 44142 is opposite to the first threaded hole 44116. A screw (not shown in the figure) passes through the first fixing hole 44143 and is inserted into the first threaded hole 44116 to achieve a fixed connection between the first locking portion 4414 and the restraining portion 4411 .

[0151] The unbent portion of the first locking portion 4414 is provided with a second fixing hole 44144. As can be seen from the foregoing, the rotating shaft structure 40 further includes a rotating shaft decoration piece that shields the rotating shaft structure 40. The protrusion provided on the rotating shaft decoration piece is inserted into the second fixing hole 44144, and the rotating shaft decoration piece is fixedly connected to the first locking portion 4414 by bonding or other means, thereby achieving a fixed connection with the rotating shaft structure 40.

[0152] See also Fig. 22 , Fig. 22 The position relationship diagram of the door panel and the damping member provided in the embodiment of the present application. Fig.14 and Fig. 22As shown, a third connecting groove 459 adapted to the two first sliders 44114 is opened on the door panel 45, and the two first sliders 44114 are respectively located in the two third connecting grooves 459 and can slide in their corresponding third connecting grooves 459 to realize the sliding connection between the damping mechanism 44 and the door panel 45.

[0153] It should be noted here that in order to clearly show the constraint portion 4411, Fig. 22 The first locking portion 4414 is not shown.

[0154] Continue to see Fig. 9 The first middle beam 41 is provided with a second shaft body slide groove 4123 adapted to the restraining swing arm 44112 of one damping member 441, and a second shaft body slide groove 4123 adapted to the restraining swing arm 44112 of the other damping member 441. Figure 7 , at least part of the restraining swing arm 44112 of one damping member 441 is located in one of the second shaft body slide grooves 4123, and at least part of the restraining swing arm 44112 of the other damping member 441 is located in the other second shaft body slide groove 4123, so as to realize the rotation connection between the damping mechanism 44 and the first middle beam 41. And the setting of the restraining part 4411 of one damping member 441 makes the rotational freedom of the first door panel 451 and the first door panel connecting member 461 unique, and the setting of the restraining part 4411 of the other damping member 441 makes the rotational freedom of the second door panel 452 and the second door panel connecting member 462 unique, thereby making the rotating shaft structure 40 more stable.

[0155] Continue to see Fig.18 and Fig. 22 When the two first sliders 44114 are respectively located in the two third connecting grooves 459, at least part of the two compression portions 4412 and the first spring 4413 on the door panel 45 where the two third connecting grooves 459 are located are located in the accommodating cavity 44113d of the constraint portion 4411 where the two first sliders 44114 are located.

[0156] Continue to see Figure 7 When the foldable mobile phone 100 is in the unfolded state, part of the first slider 44114 is only located at the end of the third connecting slot 459 facing the first middle beam 41, so the constraint part 4411 can only cover part of the two compression parts 4412 and the first spring 4413, and the constraint part 4411 can limit the first spring 4413 in the Z-axis direction. At this time, the first compression part 44121 can still be located at the second end 457b of the first sliding slot 4571, and the second compression part 44122 can still be located at the second end 457b of the second sliding slot 4572, that is, at this time, the compression amount of the first spring 4413 remains unchanged, and the elastic force of the first spring 4413 remains unchanged.

[0157] In the process of the foldable mobile phone 100 rotating from the unfolded state to the folded state, see Fig.23 , Fig.23 The schematic diagram of the damping force provided by the damping mechanism in the embodiment of the present application. Fig.23 As shown, when the first slider 44114 moves in the third connecting slot 459 in a direction away from the first center beam 41, the inclined surfaces 44113b4 of the two enclosing sub-portions 44113b squeeze the rotating ring 44125 on the first compression portion 44121 and the rotating ring 44125 on the second compression portion 44122 respectively. As the first slider 44114 continues to move in the third groove 459 in a direction away from the first center beam 41, the rotating ring 44125 on the first compression portion 44121 and the rotating ring 44125 on the second compression portion 44122 continue to move along the corresponding inclined surfaces 44113b4 (moving toward the first center beam 41), and at the same time rotate around the corresponding protrusion 44124, so as to reduce the friction with the inclined surfaces 44113b4 during the movement. An increasing portion of the first sliding block 44114 is within the third groove 459 , that is, the constraint portion 4411 covers an increasing area of ​​the two compression portions 4412 and the first spring 4413 .

[0158] When the rotating ring 44125 on the first compression part 44121 and the rotating ring 44125 on the second compression part 44122 respectively move along the corresponding inclined surface 44113b4 (move toward the first central beam 41), the first compression part 44121 and the second compression part 44122 move toward each other along the Y-axis direction, and the distance between the rotating ring 44125 on the first compression part 44121 and the rotating ring 44125 on the second compression part 44122 in the Y-axis direction is reduced, that is, the length of the first spring 4413 is reduced, and the elastic force of the spring is increased. For example, when the rotating ring 44125 on the first compression part 44121 and the rotating ring 44125 on the second compression part 44122 start to move on the corresponding inclined surface 44113b4 (move toward the first center beam 41), the length of the first spring 4413 is L1; when the rotating ring 44125 on the first compression part 44121 and the rotating ring 44125 on the second compression part 44122 move a certain distance on the corresponding inclined surface 44113b4 (move toward the first center beam 41), the length of the first spring 4413 is L2, L2 is smaller than L1, and the first spring 4413 is further compressed.

[0159] Continue to see Fig.23, the rotating ring 44125 is tangent to the inclined surface 44113b4 when it moves on its corresponding inclined surface 44113b4, and the inclined surfaces 44113b4 of the two enclosure sub-parts 44113b are both subjected to the elastic force F1 perpendicular to the inclined surface 44113b4 generated when the first spring 4413 is compressed. The elastic force F1 is decomposed into a radial force F2 (in the X-axis direction when the foldable mobile phone 100 is in the unfolded state) and an axial force F3 (in the Y-axis direction). The radial force F2 has a damping torque relative to the rotation center of the constraint swing arm 44112 of the damping member 441 (that is, the rotation center of the constraint swing arm 44112 of the damping member 441 when it rotates in the second shaft body slide groove 4123). For example, if the torque is 100 N / mm, the four inclined surfaces 44113b4 corresponding to the two rotating shaft members 40a will generate a damping torque of 400 N / mm.

[0160] That is to say, in the process of the foldable mobile phone 100 rotating from the unfolded state to the folded state, the first slider 44114 moves in the third groove 459 in the direction away from the first middle beam 41, so that the inclined surfaces 44113b4 of the two enclosing sub-parts 44113b respectively squeeze the rotating ring 44125 on the first compression part 44121 and the rotating ring 44125 on the second compression part 44122, thereby further compressing the first spring 4413 to generate a larger damping torque. In this way, in the process of the foldable mobile phone 100 rotating from the unfolded state to the folded state, the first body 20 and the second body 30 of the foldable electronic device can hover at any angle. In addition, since the length direction of the first spring 4413 is the Y-axis direction and the compression part 4412 for compressing the first spring 4413 is arranged in the Y-axis direction, the occupation of the first spring 4413 and the compression part 4412 on the door panel 45 in the X-axis direction can be reduced while ensuring that the length of the first spring 4413 remains unchanged (the elastic force remains unchanged), and the size of the door panel 45 in the X-axis direction is reduced, which is beneficial to the miniaturization design of the rotating shaft structure 40. That is, the rotating shaft structure 40 can ensure a larger damping force in a smaller volume. In addition, by providing an enclosure 458 on the door panel 45 for limiting the first spring 4413 in the X-axis direction, and by limiting the first spring 4413 in the Z-axis direction by a constraint portion 4411 for compressing the first spring 4413, compared with providing the first spring 4413 alone in a limit box (along the Z-axis direction, the limit box includes a bottom plate and a cover plate, and the spring is limited in the Z-axis direction by the bottom plate and the cover plate), the structure can be simplified, and the size of the damping mechanism 44 in the Z-axis direction can be reduced, so that the thickness of the rotating shaft structure is thinner, and a larger damping force is guaranteed at a thinner thickness without losing the torque feel; or, when the thickness of the rotating shaft structure remains unchanged, the size of the first spring 4413 in the Z-axis direction can be increased, that is, the thickness of the first spring 4413 is increased (the force of the spring increases in direct proportion to the thickness), thereby improving the damping torque of the damping member 441.

[0161] In some embodiments, see Figure 24-26 , Fig.24 A schematic diagram of the structure of a first spring provided in an embodiment of the present application, Fig.25 This is a schematic diagram of the structure of the door panel provided in the embodiment of the present application from another perspective. Fig.26 A position relationship diagram of a swing arm base, a restraining swing arm, a first spring and a door panel in a folded state provided in an embodiment of the present application. Figure 24-26 As shown, along the Z-axis direction, the first spring 4413 includes an upper surface 44131 and a lower surface 44132, wherein the lower surface 44132 contacts the door panel 45, and the upper surface 44131 is located on the side of the lower surface 44132 away from the door panel 45. Along the X-axis direction, the upper surface 44131 of the first spring 4413 at one end close to the first middle beam 41 is an arc surface, and the vertical distance from the arc surface to the lower surface 44132 gradually decreases from the end of the first spring 4413 away from the first middle beam 41 to the direction of the end of the first spring 4413 close to the first middle beam 41. Correspondingly, the upper surface of the first enclosure sub-portion 4581 is also an arc surface. From the end of the first spring 4413 away from the first middle beam 41 to the direction of the end of the first spring 4413 close to the first middle beam 41, the distance from the combined arc surface composed of the arc surface of the first spring 4413 and the arc surface of the first enclosure sub-portion 4581 to the door panel 45 gradually decreases. Furthermore, the combined arc surface formed by the arc surface of the first spring 4413 and the arc surface of the first enclosure sub-portion 4581 has the same shape as the arc surface of the constraining swing arm 44112 .

[0162] Alternatively, see Fig. 27 , Fig. 27 A position relationship diagram of another swing arm base, a restraining swing arm, a first spring and a door panel in a folded state provided in an embodiment of the present application. Fig. 27 As shown, along the X-axis direction, the upper surface 44131 of the end of the first spring 4413 close to the first center beam 41 is an inclined surface, and the vertical distance from the inclined surface to the lower surface 44132 gradually decreases in the direction from the end of the first spring 4413 away from the first center beam 41 to the end of the first spring 4413 close to the first center beam 41. Correspondingly, the upper surface of the first enclosure sub-portion 4581 is also an inclined surface. From the end of the first spring 4413 away from the first center beam 41 to the end of the first spring 4413 close to the first center beam 41, the distance from the combined inclined surface composed of the inclined surface of the first spring 4413 and the inclined surface of the first enclosure sub-portion 4581 to the door panel 45 gradually decreases.

[0163] As can be seen from the foregoing, during the process of the foldable mobile phone 100 rotating from the unfolded state to the folded state, the first slider 44114 moves in the third connecting slot 459 in a direction away from the first middle beam 41, and the first slider 44114 is increasingly located in the third groove 459, that is, the constraint portion 4411 covers an increasing area of ​​the two compression portions 4412 and the first spring 4413. The upper surface 44131 of the first spring 4413 at one end close to the first middle beam 41 and the upper surface of the first enclosure sub-portion 4581 are set as an arc surface or an inclined surface, so that the first spring 4413 and the first enclosure sub-portion 4581 can be prevented from interfering with the constraint swing arm 44112 when the foldable mobile phone 100 is in the folded state. That is to say, when the foldable mobile phone 100 is in a folded state, even if the first spring 4413 and the first enclosure sub-portion 4581 are located below the constraining swing arm 44112, they will not interfere with the rotation of the constraining swing arm 44112. In this way, the first spring 4413 can move toward the first center beam 41, further reducing the size of the hinge structure 40 in the X-axis direction.

[0164] The following comparative example illustrates this effect. Fig.28 , Fig.28 This is another position relationship diagram of the swing arm base, the restraining swing arm, the first spring and the door panel in the folded state provided in the embodiment of the present application. Fig.28 As shown, in order to avoid the interference between the first spring 4413 and the first enclosure sub-portion 4581 and the constraint swing arm 44112 when the foldable mobile phone 100 is in the folded state. The first spring 4413 and the first enclosure sub-portion 4581 need to move in the direction away from the first middle beam 41, so that the size of the rotating shaft structure 40 in the X-axis direction increases. If the upper surface 44131 of the end of the first spring 4413 close to the first middle beam 41 and the upper surface of the first enclosure sub-portion 4581 are set as an arc surface or an inclined surface, even if the first spring 4413 and the first enclosure sub-portion 4581 are located below the constraint swing arm 44112, they will not interfere with the rotation of the constraint swing arm 44112. In this way, the first spring 4413 can move in the direction toward the first middle beam 41, reducing the size of the rotating shaft structure 40 in the X-axis direction.

[0165] Continue to see Fig.24 , Fig.26 and Fig. 27 In some embodiments, the non-arc region of the upper surface 44131 of the first spring 4413 is connected to the arc region by a curved surface, so that the non-arc region of the upper surface 44131 of the first spring 4413 is connected to the arc region by a smooth transition. The curvature radius R of the projection of the curved surface on the plane formed by the X-axis and the Z-axis is greater than or equal to 0.3 mm. For example, the curvature radius R of the projection of the curved surface on the plane formed by the X-axis and the Z-axis is 0.3 mm, 0.4 mm, 0.5 mm or 0.6 mm. Fig.26 and Fig. 27 In some embodiments, a vertical distance H3 from an edge of the arc surface or inclined surface of the first spring 4413 close to the first middle beam 41 to the lower surface 44132 is greater than or equal to 0.4 mm. Exemplarily, H3 is 0.4 mm, 0.5 mm, 0.6 mm or 0.7 mm.

[0166] With this arrangement, even if a portion of the first spring 4413 is incomplete (is an inclined surface or an arc surface), it will not affect the elastic force value of the first spring 4413 and will not produce yield deformation.

[0167] To illustrate the beneficial effect, the following is a detailed description by comparing with related technologies.

[0168] Fig.29a A schematic diagram of the structure of the first spring of the embodiment of the present application for simulation is shown, Fig.29b A comparative simulation diagram of the related art and the embodiment of the present application is shown. Fig.29a The first spring 4413 is provided with a compression surface, that is, during simulation, the first spring 4413 is compressed by the compression surface. Fig.29a (1) is a schematic structural diagram of the first spring 4413 when the upper surface 44131 of one end of the first spring 4413 close to the first middle beam 41 is set as an arc surface, Fig.29a (2) is a schematic structural diagram of the first spring 4413 when the upper surface 44131 of one end of the first spring 4413 close to the first middle beam 41 is set as an inclined surface. Fig.29b The simulation diagram is a relationship diagram between the compression amount of the first spring and the elastic force of the first spring. The horizontal axis is the displacement of the first spring compression, the maximum displacement value during compression is 1.2 mm, and the vertical axis is the elastic force value of the first spring after compression. Fig.29b (1) is a graph showing the relationship between the compression amount and the elastic force of a common spring (a spring in which the upper surface 44131 of the first spring 4413 at one end close to the first middle beam 41 is not set as an arc surface or an inclined surface). Fig.29b (2) is a diagram showing the relationship between the compression amount of the first spring and the elastic force of the first spring when the upper surface 44131 of the first spring 4413 close to the first middle beam 41 is set as an arc surface, Fig.29b (3) is a relationship diagram between the compression amount of the first spring and the elastic force of the first spring when the upper surface 44131 of the first spring 4413 close to the first middle beam 41 is set as an inclined surface, and Fig.29b The curve ① in FIG. 4 represents the elastic force curve of the first spring 4413 when the first spring 4413 is compressed. Fig.29b As can be seen from curve ① in FIG. 4 , as the compression amount of the first spring 4413 increases, the elastic force of the first spring 4413 becomes larger and larger; Fig.29bCurve ② in FIG. 4 represents the elastic force curve of the first spring 4413 when the compressed first spring 4413 is released. Fig.29b It can be seen from the curve ② in FIG. 4 that as the compression amount of the first spring 4413 decreases, the elastic force of the first spring 4413 becomes smaller and smaller.

[0169] Depend on Fig.29b It can be seen that Fig.29b Curve ① and curve ② in (2) and Fig.29b Curve ① and curve ② in (1) are basically the same. Fig.29b The curves ① and ② in (3) are Fig.29b The trends of curves ① and ② in (1) are the same, and Fig.29b The curves ① and ② in (3) are smoother. Fig.29b It can be seen from (2) and (3) that the first spring of the embodiment of the present application can also reach an elastic force of 25-30N when the compression amount is 1.2mm, which is basically the same as the elastic force value of the ordinary spring when the compression amount is 1.2mm. It can be seen that by optimizing the size of the first spring 4413 (such as optimizing the vertical distance H3 from the edge of the arc surface or inclined surface of the first spring 4413 close to the first middle beam 41 to the lower surface 44132, the curvature radius R of the projection of the curved surface on the plane formed by the X-axis and the Z-axis, the thickness of each layer of the first spring, the distance between two adjacent layers and / or the length and width of the first spring, etc.), even if a part of the first spring 4413 is incomplete (an inclined surface or an arc surface), it will not affect the elastic force value of the first spring 4413, that is, the elastic force value of the first spring 4413 when the upper surface 44131 of one end of the first spring 4413 close to the first middle beam 41 is set as a arc surface and the elastic force value of the first spring 4413 when the upper surface 44131 of one end of the first spring 4413 close to the first middle beam 41 is set as an inclined surface is substantially the same as the elastic force value of an ordinary spring, and no yield deformation will occur.

[0170] See also Fig.30 and Fig.31 , Fig.30 This is a schematic diagram of the front structure of a connector provided in an embodiment of the present application. Fig.31 This is a schematic diagram of the back structure of a connector provided in an embodiment of the present application. Fig.30 and Fig.31 As shown, the connecting member 40b includes a second middle beam 47, two connecting plates 48 and two supporting mechanisms 49, wherein the two connecting plates 48 are respectively a first connecting plate 481 and a second connecting plate 482, and the two supporting mechanisms 49 are respectively a first supporting mechanism 491 and a second supporting mechanism 492. Along the X-axis direction, the first connecting plate 481 and the second connecting plate 482 are arranged on both sides of the second middle beam 47. Figure 4Along the Y-axis direction, the two ends of the first connecting plate 481 are fixedly connected to the first door panel connecting member 461 of the first rotating shaft member 40a1 and the first door panel connecting member 461 of the second rotating shaft member 40a2, and the two ends of the second connecting plate 482 are fixedly connected to the second door panel connecting member 462 of the first rotating shaft member 40a1 and the second door panel connecting member 462 of the second rotating shaft member 40a2.

[0171] Continue to see Fig.30 The second middle beam 47 includes a first portion 471 and two second portions 472. Along the Y-axis direction, the two second portions 472 are located at opposite ends of the first portion 471 and are fixedly connected. At least one second connection hole 4721 is provided on each of the two second portions 472. Fig. 9 , the first center beam 41 of the first rotating shaft member 40a1 is opposite to the second connection hole 4721 on one of the second parts 472 through the third connection hole 413 thereon (that is, the projection of the third connection hole 413 on the plane formed by the X-axis and the Y-axis overlaps with the projection of the second connection hole 4721 on the plane formed by the X-axis and the Y-axis), and then the first center beam 41 of the first rotating shaft member 40a1 and the second center beam 47 can be fixedly connected by bolts; the first center beam 41 of the second rotating shaft member 40a2 is opposite to the second connection hole 4721 on the other second part 472 through the third connection hole 413 thereon, and then the first center beam 41 of the second rotating shaft member 40a2 and the second center beam 47 can be fixedly connected by bolts, thereby realizing the fixed connection between the connecting member 40b and the first rotating shaft member 40a1 and the second rotating shaft member 40a2.

[0172] In some embodiments, see Figure 4 The connecting member 40b also includes a second cover plate 47a. Along the Z-axis direction, the second cover plate 47a is located on the second middle beam 47 and is fixedly connected to the second middle beam 47, so as to protect or enclose the structure on the second middle beam 47.

[0173] It should be noted that, in order to clearly show the structure of the second middle beam 47 of the connecting member 40b, Fig.30 The second cover plate 47a is not shown (it will block part of the second middle beam 47). Fig.32 , Fig.32 This is a schematic diagram of a support mechanism provided in an embodiment of the present application. Fig.32 As shown, the supporting mechanism 49 includes a supporting portion 493 and a second locking portion 494 .

[0174] See also Fig.33 and Fig.34 , Fig.33 This is a schematic diagram of the structure of the support portion provided in an embodiment of the present application at a certain viewing angle. Fig.34The structural diagram of the support part provided in the embodiment of the present application at another viewing angle is shown. Fig.33 and Fig.34 As shown, the support portion 493 includes a support base 4931, a support swing arm 4932 and two third sliders 4933. Along the X-axis direction, the support base 4931 is provided with a second threaded hole 4934 penetrating two side walls, and the support swing arm 4932 is located on one side wall of the support base 4931. Along the Y-axis direction, the two third sliders 4933 are located on two opposite side walls of the support base 4931.

[0175] Continue to see Fig.32 Along the Z-axis direction, the second locking portion 494 is located at one side of the supporting base 4931, and along the X-axis direction, a local area of ​​one end of the second locking portion 494 is raised and bent to form a second locking sub-portion 4941, and a fourth fixing hole is opened on the second locking sub-portion 4941, and the fourth fixing hole of the second locking sub-portion 4941 is opposite to the second threaded hole 4934. A screw 4942 passes through the fourth fixing hole and is inserted into the second threaded hole 4934 to achieve a fixed connection between the second locking portion 494 and the supporting portion 493.

[0176] The unbent portion of the second locking portion 494 is provided with a fifth fixing hole 4943. As can be seen from the foregoing, the rotating shaft structure 40 further includes a rotating shaft decoration member that shields the rotating shaft structure 40. The protrusion provided on the rotating shaft decoration member is inserted into the fifth fixing hole 4943, and the rotating shaft decoration member is fixedly connected to the second locking portion 494 by bonding or other means, thereby achieving a fixed connection with the rotating shaft structure 40.

[0177] See also Fig.35 , Fig.35 This is a schematic diagram of the back structure of the connector when no connecting plate is provided in the embodiment of the present application. Fig.34 and Fig.35As shown, the second center beam 47 is provided with a slide groove (not shown due to obstruction) adapted to the support swing arms 4932 of the two support mechanisms 49, and the two support swing arms 4932 are respectively located in the corresponding slide grooves to realize the rotational connection between the support mechanism 49 and the second center beam 47. And the rotation center of one of the support mechanisms 49 when it rotates relative to the second center beam 47 coincides with the rotation center of the constraint swing arm 44112 of one of the damping members 441 when it rotates relative to the first center beam 41 (that is, the projection of the rotation center of one of the support mechanisms 49 when it rotates relative to the second center beam 47 on the plane formed by the X-axis and the Z-axis coincides with the projection of the rotation center of the constraint swing arm 44112 of one of the damping members 441 when it rotates relative to the first center beam 41 on the plane formed by the X-axis and the Z-axis), and the rotation center of the other support mechanism 49 when it rotates relative to the second center beam 47 coincides with the rotation center of the constraint swing arm 44112 of the other damping member 441 when it rotates relative to the first center beam 41 (that is, the projection of the rotation center of the other support mechanism 49 when it rotates relative to the second center beam 47 on the plane formed by the X-axis and the Z-axis coincides with the projection of the rotation center of the constraint swing arm 44112 of the other damping member 441 when it rotates relative to the first center beam 41 on the plane formed by the X-axis and the Z-axis).

[0178] See also Fig.36 , Fig.36 This is a schematic diagram of the structure of a swing arm slide assembly provided in an embodiment of the present application. Fig.36 As shown, the support mechanism 49 also includes a swing arm slide disassembly 495, on which a fourth connecting slide groove 4951 adapted to the support base 4931 is opened, and the side wall of the fourth connecting slide groove 4951 is partially recessed to form a third groove 4952 adapted to the two third sliders 4933. Figure 4 and Figure 5 The two third sliders 4933 slide in the two third grooves respectively to realize the sliding connection between the swing arm slideway disassembly 495 and the support base 4931. The swing arm slideway disassembly 495 is provided with at least one sixth fixing hole 4953 in the area where the fourth connecting groove 4951 is not provided. Correspondingly, the first middle frame 22 and the second middle frame 32 are provided with a seventh fixing hole (due to the shielding Figure 5 (not shown), a screw passes through the sixth fixing hole 4953 of the swing arm slide assembly 495 of one of the support mechanisms 49 and the seventh fixing hole of the first middle frame 22, and locks and fixes the swing arm slide assembly 495 of one of the support mechanisms 49 to the first middle frame 22, and another screw passes through the sixth fixing hole 4953 of the swing arm slide assembly 495 of another support mechanism 49 and the seventh fixing hole of the second middle frame 32, and locks and fixes the swing arm slide assembly 495 of the other support mechanism 49 to the second middle frame 32.

[0179] See also Fig.37 , Fig.37 for Fig.30 The cross-sectional view of the connecting piece along the BB' direction is shown in FIG. Fig.37 As shown, the second threaded hole 4934 is provided with a second spring 4935 and a ball (such as a steel ball) 4936, and the second spring 4935 is located between the screw 4942 and the ball 4936. A pit 473 is provided on the second middle beam 47, and when the foldable mobile phone 100 is in the unfolded state, a part of the ball 4936 is located in the pit 473.

[0180] When the angle between the plane where the first support member 222 of the first middle frame 22 is located and the plane where the second support member 322 of the second middle frame 32 is located is the first angle (such as 90°), see Fig.38 , Fig.38 In the position relationship diagram of the second middle beam and the support base when the angle between the plane where the first support member of the first middle frame is located and the plane where the second support member of the second middle frame is located is the first angle provided in the embodiment of the present application, the sphere 4936 does not contact the second middle beam 47.

[0181] When the angle between the plane where the first support member 222 of the first middle frame 22 is located and the plane where the second support member 322 of the second middle frame 32 is located is the second angle (the second angle is greater than the first angle, such as 150°), see Fig.39 , Fig.39 The position relationship diagram of the second middle beam and the support base when the angle between the plane where the first support member of the first middle frame is located and the plane where the second support member of the second middle frame is located is the second angle provided in the embodiment of the present application, and the ball 4936 begins to contact the second middle beam 47. It should be noted here that Fig.38 and Fig.39 Only the support base of one support mechanism 49 is shown, and the support base 4931 of the other support mechanism 49 and the second middle beam 47 are the same.

[0182] Continue to see Fig.37In the process of the angle between the plane where the first support member 222 of the first middle frame 22 and the plane where the second support member 322 of the second middle frame 32 is located rotating from the second angle to the third angle (the third angle is greater than the second angle, and the third angle is 180°), the second middle beam 47 squeezes the ball 4936, so that the ball 4936 compresses the second spring 4935, and is in a compressed state, and as the angle increases, the compression amount increases, and the elastic force increases. The elastic force is a radial force, and the elastic force has a damping torque relative to the rotation center of the support mechanism 49 when it rotates relative to the second middle beam 47 (that is, the rotation center of the support swing arm 4932 of the support mechanism 49 when it rotates in the slide groove of the second middle beam 47 that it is adapted to), and the torque can be 30-50 N / mm, further improving the damping torque of the shaft structure 40. In other words, by arranging the support mechanism 49 on the connecting member 40b, not only can the middle area of ​​the flexible display screen 10 be supported, but the damping torque can also be further improved.

[0183] In summary, the hinge structure provided in the embodiment of the present application can provide sufficient damping torque when the size in the Z-axis direction is small (that is, the thickness is small), thereby ensuring that the first body 20 and the second body 30 are stably suspended at any rotation position, while improving the operational feel of folding or unfolding, or allowing the foldable electronic device to be stably maintained in the folded position or unfolded position.

[0184] 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: include: at least one rotating shaft member; The rotating shaft member includes a first middle beam, a door panel and a damping mechanism; The first middle beam extends along a first direction; The door panel is located on at least one side of the first center beam along a second direction, and the second direction is different from the first direction; The damping mechanism comprises a restraining portion, two compression portions and a first elastic portion; the two compression portions are located on the door panel and are both slidably connected to the door panel, and the sliding direction of the compression portions is the first direction; along the first direction, the two compression portions are opposite to each other, and the first elastic portion is located between the two opposite compression portions; The constraint portion is rotatably connected to the first center beam and slidably connected to the door panel, and the sliding direction of the constraint portion is a second direction; The restraining part has a receiving cavity, and the restraining part is covered on the door panel so that at least part of the two compression parts and the first elastic part are located in the receiving cavity; Along the second direction, two inner surfaces of one end of the receiving cavity are inclined surfaces; When the restraining part slides on the door panel along the second direction, the two compression parts move on the two inclined surfaces respectively, and the two compression parts approach each other or move away from each other along the first direction; when the two compression parts approach each other along the first direction, the first elastic part is compressed, and the two inclined surfaces are both subjected to the force perpendicular to the inclined surfaces generated by the first elastic part when the inclined surfaces are compressed.

2. The rotating shaft structure according to claim 1, characterized in that: Along a third direction, the first elastic portion includes an upper surface and a lower surface, the upper surface is located on a side of the lower surface away from the door panel, and the third direction is different from both the first direction and the second direction; Along the second direction, the upper surface of the end of the first elastic part close to the first center beam is a curved surface, and the vertical distance from the curved surface to the lower surface gradually decreases in the direction from the end of the first elastic part away from the first center beam to the end of the first elastic part close to the first center beam.

3. The rotating shaft structure according to claim 1, characterized in that: Along a third direction, the first elastic portion includes an upper surface and a lower surface, the upper surface is located on a side of the lower surface away from the door panel, and the third direction is different from both the first direction and the second direction; Along the second direction, the upper surface of the end of the first elastic part close to the first center beam is an inclined surface, and the vertical distance from the inclined surface to the lower surface gradually decreases in the direction from the end of the first elastic part away from the first center beam to the end of the first elastic part close to the first center beam.

4. The rotating shaft structure according to claim 2 or 3, characterized in that: When the upper surface of the end of the first elastic part close to the first center beam is a curved surface, the area of ​​the upper surface of the first elastic part that is not a curved surface and the curved surface are connected by a curved surface; When the upper surface of the end of the first elastic portion close to the first center beam is an inclined surface, the area of ​​the upper surface of the first elastic portion that is not an inclined surface and the inclined surface are connected by a curved surface.

5. The rotating shaft structure according to claim 4, characterized in that: A curvature radius of a projection of the curved surface on a reference surface is greater than or equal to 0.3 mm, and the reference surface is perpendicular to the first direction.

6. The rotating shaft structure according to claim 2 or 3, characterized in that: A vertical distance from an edge of the arc surface or the inclined surface of the first elastic portion close to the first middle beam to the lower surface is greater than or equal to 0.4 mm.

7. The rotating shaft structure according to any one of claims 1 to 6, characterized in that: Along the second direction, blocking portions are arranged on both sides of the first elastic portion.

8. The rotating shaft structure according to any one of claims 1 to 7, characterized in that: The compression part includes a bearing plate, and along a third direction, the bearing plate includes a first surface, a convex column is provided on the first surface, and a rotating ring is sleeved on the convex column and can rotate relative to the convex column, and the third direction is different from the first direction and the second direction; When the restraining portion slides on the door panel along the second direction, the two rotating rings in the two compression portions move on the two inclined surfaces respectively.

9. The rotating shaft structure according to claim 8, characterized in that: Along the third direction, the bearing plate further comprises a second surface, which is opposite to the first surface, and a convex column is also arranged on the second surface, and a sliding groove adapted to the convex column on the second surface is arranged on the door plate, so that the compression part is slidably connected with the door plate; A retaining wall is provided at the end of the first surface, and along the second direction, the retaining walls of the two compression parts are opposite to each other, and the first elastic part is located between the two opposite retaining walls.

10. The rotating shaft structure according to any one of claims 1 to 9, characterized in that: The restraining part comprises a swing arm base, the swing arm base is a flat plate-shaped base having two opposite ends along the first direction protruding in a third direction, and a first groove is formed between the two protrusions, and the third direction is different from both the first direction and the second direction; The constraint part further includes a constraint swing arm and a boss; along the second direction, the constraint swing arm and the boss are fixed on two opposite side walls of the swing arm base; the constraint swing arm is rotatably connected to the first middle beam, so that the constraint part is rotatably connected to the first middle beam; The number of the bosses may be two, and along the first direction, the two bosses are located at two opposite ends of a side wall of the swing arm base; The boss includes a shielding sub-portion extending along the first direction and an enclosure sub-portion extending along the third direction, one end of the shielding sub-portion is connected to one end of the enclosure sub-portion to form a slot; The shielding sub-portion is located at a position where there is no protrusion on the side wall, and the enclosure sub-portion is located on the protruding side wall; the enclosure sub-portions of the two bosses are opposite to each other, and the two card slot openings are opposite to each other, and both of the card slots are connected to the first groove to form the accommodating cavity.

11. The rotating shaft structure according to claim 10, characterized in that: The enclosure sub-portion includes an inner surface and an outer surface along the first direction, and also includes an outer side wall and an inner side wall connecting the inner surface and the outer surface and opposite to each other along the second direction. The inner side wall is connected to the swing arm base, and the connection between the outer side wall and the inner surface is the inclined surface.

12. The rotating shaft structure according to claim 10, characterized in that: The constraint portion further comprises two first sliding blocks, and along the first direction, the two first sliding blocks are located on two opposite side walls of the swing arm base; The door panel is provided with a connecting sliding groove adapted to the two first sliding blocks so that the restraining part is slidably connected to the door panel.

13. The rotating shaft structure according to claim 10, characterized in that: The position of the side wall of the swing arm base where the boss is not provided is partially recessed to form at least one first threaded hole; The damping mechanism also includes a first locking portion; along the second direction, a local area of ​​one end of the first locking portion is raised and bent to form a first locking sub-portion, and a fixing hole is opened on the first locking sub-portion, and the fixing hole on the first locking sub-portion is opposite to the first threaded hole; a screw passes through the fixing hole on the first locking sub-portion and is inserted into the first threaded hole to fix the first locking portion and the constraint portion.

14. The rotating shaft structure according to claim 13, characterized in that: The constraint portion further comprises two second sliders, and along the first direction, the two second sliders are located on two opposite side walls of the swing arm base; Along the first direction, two opposite ends of the first locking portion are bent, and a locking groove is formed between the bent portion and the unbent portion; and the two second sliding blocks are respectively located in the two locking grooves.

15. The rotating shaft structure according to any one of claims 1 to 14, characterized in that: The rotating shaft structure includes at least two rotating shaft members; the rotating shaft structure also includes at least one connecting member; along the first direction, at least one connecting member is provided between two adjacent rotating shaft members, and the connecting member is fixedly connected to the rotating shaft member.

16. The rotating shaft structure according to claim 15, characterized in that: The connecting member includes a second center beam and a supporting mechanism; the supporting mechanism is rotatably connected to the second center beam.

17. The rotating shaft structure according to claim 16, characterized in that: A rotation center of the support mechanism when rotating relative to the second center beam coincides with a rotation center of the constraint portion when rotating relative to the first center beam.

18. The rotating shaft structure according to claim 16 or 17, characterized in that: The support mechanism comprises a support portion; the support portion comprises a support base; Along the second direction, the support base is provided with a second threaded hole penetrating through the two side walls; a screw is locked in the second threaded hole; A second elastic member and a sphere are provided in the second threaded hole, and the second elastic member is located between the screw and the sphere; a pit is provided on the second center beam; when the sphere contacts the second center beam, the second elastic member is compressed until a partial area of ​​the sphere is located in the pit.

19. The rotating shaft structure according to claim 18, characterized in that: The support mechanism also includes a second locking portion; Along the third direction, the second locking portion is located on one side of the supporting base, and along the second direction, a local area of ​​one end of the second locking portion is raised and bent to form a second locking sub-portion, and a fixing hole is provided on the second locking sub-portion, and the fixing hole of the second locking sub-portion is opposite to the second threaded hole; the screw passes through the fixing hole of the second locking sub-portion and is inserted into the second threaded hole to fix the second locking portion and the supporting portion.

20. The rotating shaft structure according to claim 18, characterized in that: The support mechanism further comprises a swing arm slideway disassembly component, and the swing arm slideway disassembly component is slidably connected to the support base; The swing arm slide assembly is fixedly connected to the first body and the second body of the foldable electronic device.

21. The rotating shaft structure according to claim 20, characterized in that: The support portion further includes a third sliding block; The swing arm slide disassembly component is provided with a connecting slide groove adapted to the support base, and the side wall of the connecting slide groove of the swing arm slide disassembly component is partially recessed to form a groove adapted to the third sliding block, so that the swing arm slide disassembly component is slidably connected to the support base; At least one fixing hole is provided in the area of ​​the swing arm slideway disassembly component where no connecting slide groove is provided.

22. A foldable electronic device, characterized in that: It comprises the rotating shaft structure as described in any one of claims 1-21.

23. The foldable electronic device according to claim 22, characterized in that: The foldable electronic device also includes a first body, a second body and a flexible display screen; The rotating shaft structure is fixedly connected to the first fuselage and the second fuselage through the door panel; The flexible display screen is located on one side of the first body, the second body and the hinge structure, and the flexible display screen is supported by the first body, the second body and the hinge structure.

24. The foldable electronic device according to claim 22 or 23, characterized in that: The foldable electronic device is an outward-foldable electronic device.

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