Rotary shaft mechanism and foldable-screen terminal

Abstract

A rotary shaft mechanism and a foldable-screen terminal, relating to the technical field of electronic devices, and used to solve the problem of abnormal sound occurring during rotation of a foldable-screen terminal, thereby affecting user experience. The rotary shaft mechanism comprises a support plate (700), door plates (400), and a support member (800). The door plates are provided on two sides of the support plate, and are rotatable relative to the support plate between a folded state and an unfolded state. The support member is fixedly connected to the support plate. The support member is fit to the door plates on the two sides, and the support member and the door plates are slidable relative to each other. When the door plates are in the unfolded state, the two door plates are located on the two sides of the support plate, and the door plates and the support plate are located on a same side of the support member. When the door plates are in the folded state, the two door plates face each other, and the support member is bent and located between the two door plates.

Description

A hinge mechanism and a foldable screen terminal Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to a hinge mechanism and a foldable screen terminal. Background Technology

[0002] Foldable screen devices can rotate between an unfolded and folded state. Because they offer a large-screen display when unfolded and are easy to carry when folded, they are increasingly favored by consumers. However, the rotation between these states can produce unusual noises, affecting the user experience. Summary of the Invention

[0003] This application provides a hinge mechanism and a foldable screen terminal to solve the problem that abnormal noise occurs during the rotation of the foldable screen terminal between the unfolded and folded states, affecting the user experience.

[0004] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0005] Firstly, a pivot mechanism is provided, comprising a support plate, door panels, and a support piece. Door panels are provided on both sides of the support plate, and the door panels are rotatable relative to the support plate between an unfolded state and a folded state. The support piece is fixedly connected to the support plate, and the support piece is in contact with the door panels on both sides, and the support piece and the door panels are slidable relative to each other. When the door panels are in the unfolded state, the two door panels are located on both sides of the support plate, and the door panels and the support plate are located on the same side of the support piece. When the door panels are in the folded state, the two door panels are facing each other, and the support piece is bent and located between the two door panels.

[0006] The hinge mechanism provided in the first aspect of this application is used in a foldable screen terminal, specifically in a stacked arrangement of a support sheet and a foldable screen. When the support sheet is bent, the foldable screen is also bent, and the foldable screen is located inside the support sheet. Because the support sheet and the foldable screen are stacked and both have a certain thickness, the radius of the arc formed by the inner surface of the foldable screen away from the support sheet after bending is not equal to the radius of the arc formed by the outer surface of the support sheet away from the foldable screen. Therefore, after bending, relative sliding occurs between the support sheet and the foldable screen; that is, the support sheet slides relative to the door panel.

[0007] Based on this, since the support plate and the support plate are fixedly connected, there will be no misalignment between the support plate and the support plate. However, the two edge areas on both sides of the support plate can misalign with the two door panels respectively, and the distance of movement of the edge area on either side of the support plate relative to the corresponding door panel is reduced. That is, the relative movement between the two edge areas on both sides of the support plate and the corresponding door panel does not affect each other, thereby reducing the relative movement distance between the support plate and the door panel, so as to reduce the relative movement time between the two, that is, reduce the distance of friction between the two, which helps to reduce the risk of abnormal noise generated by the rotating shaft mechanism during rotation.

[0008] In one possible implementation of the first aspect of this application, multiple connection points are provided between the support plate and the support plate, and these connection points are spaced apart along the length of the rotating shaft mechanism. This structure ensures a fixed connection between the support plate and the support plate without affecting the bending of the support plate, thus improving structural reliability.

[0009] In one possible implementation of the first aspect of this application, a groove is formed on the support piece, the groove penetrating the support piece and arranged circumferentially around the connection point. With this structure, the groove can prevent cracks generated at the connection point from extending to the surrounding area, thereby reducing the risk of the support piece breaking and failing.

[0010] In one possible implementation of the first aspect of this application, grooves are provided on both sides of the connection point along the width direction of the rotating shaft mechanism. This structure facilitates uniform stress distribution on the two grooves on both sides of the connection point, reducing the risk of tearing when the support plate is bent. Exemplarily, the two grooves on both sides of the connection point can be symmetrically arranged along the centerline of the support plate.

[0011] In one possible implementation of the first aspect of this application, the distance between the two grooves on either side of the connection point decreases from the middle of the grooves towards both ends. This structure, which arranges the grooves around the connection point, helps to further reduce the risk of cracks originating at the connection point extending to the surrounding area.

[0012] In one possible implementation of the first aspect of this application, multiple sets of grooves are provided, each set of grooves including multiple grooves, and the multiple sets of grooves are distributed at intervals along the length direction of the rotating shaft mechanism; each set of grooves is provided with a connection point. With this structure, the strength of the support plate can be guaranteed while preventing cracks generated at the connection points from extending to the surrounding area.

[0013] In one possible implementation of the first aspect of this application, the surface of the support plate has a centerline parallel to the length direction of the rotating shaft mechanism, and the connection point for the fixed connection between the support plate and the support plate is arranged along the centerline. This structure facilitates uniform force distribution on both sides of the support plate's edge areas, ensuring equal friction between the edge areas and the corresponding door panels. This avoids local instability caused by uneven force distribution, thereby further reducing the risk of abnormal noise.

[0014] In one possible implementation of the first aspect of this application, the rotating shaft mechanism includes an adhesive layer, through which the support sheet and the support plate are bonded and fixed. Exemplarily, the adhesive layer may include dispensing adhesive, backing adhesive, or hot melt adhesive film, etc., to bond and fix the support sheet and the support plate. Furthermore, multiple adhesive layers may be provided and distributed at intervals along the length direction of the rotating shaft mechanism.

[0015] In one possible implementation of the first aspect of this application, the rotating shaft mechanism includes a fastener that passes through a support plate and is fixedly connected to a support plate. Exemplarily, the fastener may include screws or rivets, etc.

[0016] In one possible implementation of the first aspect of this application, the support plate is welded and fixed to the support plate. In this structure, multiple welding points can be provided between the support plate and the support plate, and these welding points can be spaced apart along the length of the rotating shaft mechanism.

[0017] In one possible implementation of the first aspect of this application, the support plate includes multiple sub-support plates distributed along the length of the pivot mechanism. Each sub-support plate is fixedly connected to a support plate and fits against a door panel, allowing relative sliding between the sub-support plates and the door panel. This structure helps reduce the risk of localized stress concentration on the sub-support plates, making them easier to bend. Furthermore, dividing the support plate into multiple sub-support plates improves the flatness of each sub-support plate, enhancing the support effect for the foldable screen when the pivot mechanism is in the unfolded state.

[0018] In one possible implementation of the first aspect of this application, a plurality of recesses are provided on the surface of the support sheet, and the plurality of recesses are spaced apart on the support sheet. In this structure, the recesses can thin out local areas on the support sheet, thereby reducing the stiffness of the area, which is beneficial to reducing the bending stiffness of the support sheet, thereby reducing the risk of abnormal noise caused by discontinuous changes in stiffness during the bending process of the support sheet.

[0019] In one possible implementation of the first aspect of this application, the surface of the support plate has a centerline parallel to the length direction of the rotating shaft mechanism, and multiple recesses are symmetrically arranged along the centerline. For example, multiple recesses are symmetrically arranged on both sides of the centerline, or the recesses form an axisymmetric structure with the centerline as the axis of symmetry. Alternatively, some recesses are symmetrically distributed on both sides of the centerline, and some recesses form an axisymmetric structure. With this structure, the support plate can be subjected to balanced forces on both sides during bending, thereby reducing the risk of local instability and abnormal noise caused by uneven forces on both sides of the support plate.

[0020] In one possible implementation of the first aspect of this application, at least one set of recesses is provided on the support plate along the length direction of the rotating shaft mechanism, and each set of recesses includes at least one recess distributed along the width direction of the rotating shaft mechanism. This structure ensures that the recesses are regularly distributed on the surface of the support plate, thereby further guaranteeing balanced force distribution when the support plate bends and preventing local instability.

[0021] For example, multiple sets of recesses can be staggered along the width direction of the pivot mechanism. With this structure, the area covered by the recesses on the support plate surface can be increased along the width direction of the pivot mechanism, further reducing the risk of localized stress concentration on the support plate surface, and thus further reducing the risk of abnormal noise when the support plate is bent.

[0022] In one possible implementation of the first aspect of this application, the recess extends along the length of the rotating shaft mechanism. In this structure, the recess can be located in the central region of the support plate, making the support plate easier to bend and reducing the risk of abnormal noise.

[0023] In one possible implementation of the first aspect of this application, the recess extends along the width direction of the pivot mechanism. In this structure, the recess can extend along the width direction of the pivot mechanism to the edge region of the support piece, ensuring that while the support piece is easily bent, the recess will not be torn when the support piece bends, thus guaranteeing the integrity of the support piece.

[0024] In one possible implementation of the first aspect of this application, the recess is a through hole. In this structure, the recess penetrates both surfaces of the support sheet, thereby reducing the local strength of the support sheet and making it easier to bend.

[0025] In one possible implementation of the first aspect of this application, the recess is a blind hole, and the recess is formed on the surface of the support piece facing the support plate. With this structure, the surface of the support piece facing the folding screen can be a complete plane, thereby providing support for the folding screen and ensuring its flatness.

[0026] In one possible implementation of the first aspect of this application, notches are provided at the edges of the support piece distributed along the width direction of the pivot mechanism. With this structure, the notches can avoid contact with adjacent structures. For example, if an adhesive structure is provided between the folding screen and the door panel, the notches can prevent the support piece from contacting the adhesive structure, thereby preventing the support piece from causing the adhesive structure to fail.

[0027] In one possible implementation of the first aspect of this application, the surface of the support plate facing the support sheet has a flat area and a hollowed-out area, and a recess is provided on the support sheet in the area opposite to the flat area. In this structure, the area of ​​the support sheet without the recess has higher strength, thereby providing better support for the hollowed-out area.

[0028] In one possible implementation of the first aspect of this application, the hinge mechanism includes a buffer layer that is attached to the surface of the support sheet. For example, the buffer layer may be attached to the side of the support sheet facing the folding screen, i.e., the buffer layer is disposed between the support sheet and the folding screen, so that the buffer layer can deform and absorb impact energy, thereby protecting the folding screen.

[0029] Alternatively, the buffer layer can be attached to the side of the support piece facing the door panel, so that the buffer layer and the door panel are in close contact. This allows the door panel and the buffer layer to slide relative to each other when the support piece is bent, which helps to further reduce the friction generated and thus further reduce the risk of abnormal noise.

[0030] In one possible implementation of the first aspect of this application, the buffer layer is attached to the surface of the support piece away from the support plate. The buffer layer covers the two side edges of the support piece distributed along the width direction of the pivot mechanism and is attached to the surface of the support piece facing the door panel. In this structure, the buffer layer completely covers the support piece, which helps to increase the contact area between the buffer layer and the folding screen, thereby improving the protection effect on the folding screen.

[0031] Furthermore, the buffer layer extends to the surface of the support piece facing the door panel, meaning the buffer layer is in close contact with the door panel. When the support piece bends, the buffer layer slides relative to the door panel, which helps to further reduce the friction between the two and thus further reduce the risk of abnormal noise.

[0032] Secondly, a foldable screen terminal is provided, comprising a housing, a hinge mechanism, and a foldable screen assembly. The hinge mechanism is as described in any of the above technical solutions, with the housing connected to both sides of the hinge mechanism. The foldable screen assembly is disposed on the housing and the hinge mechanism.

[0033] The foldable screen terminal provided in the second aspect of this application, because it includes the hinge mechanism described in any of the above technical solutions, can solve the same technical problem and achieve the same technical effect.

[0034] In one possible implementation of the second aspect of this application, the foldable screen assembly includes a foldable screen and a support layer, the support layer being disposed between the foldable screen and the support piece of the hinge mechanism; the support layer is at least partially attached to the support piece. In this structure, the support piece and the support layer of the foldable screen assembly are in contact, thereby improving the support effect on the foldable screen. Attached Figure Description

[0035] Figure 1 is a structural diagram of a foldable screen terminal provided in an embodiment of this application;

[0036] Figure 2 is a front view of a foldable screen terminal provided in an embodiment of this application;

[0037] Figure 3 is a partial cross-sectional view of the foldable screen assembly provided in an embodiment of this application;

[0038] Figure 4 is a front view of a foldable screen terminal in a folded state according to an embodiment of this application;

[0039] Figure 5 is a front view of another foldable screen terminal in a folded state provided in an embodiment of this application;

[0040] Figure 6 is a structural diagram of a rotating shaft mechanism provided in an embodiment of this application;

[0041] Figure 7 is an exploded view of a rotating shaft mechanism provided in an embodiment of this application;

[0042] Figure 8 is a partial enlarged view of a rotating shaft mechanism provided in an embodiment of this application;

[0043] Figure 9 is a structural diagram of another rotating shaft mechanism provided in an embodiment of this application;

[0044] Figure 10 is a structural diagram of another foldable screen terminal in an unfolded state provided in an embodiment of this application;

[0045] Figure 11 is a structural diagram of another foldable screen terminal in a folded state provided in an embodiment of this application;

[0046] Figure 12 is a structural diagram of another foldable screen terminal in a folded state provided in an embodiment of this application;

[0047] Figure 13 is a structural diagram of a support sheet with multiple connection points provided in an embodiment of this application;

[0048] Figure 14 is a structural diagram of another support piece provided in an embodiment of this application, which has multiple connection points on its surface.

[0049] Figure 15 is a structural diagram of another support piece provided in an embodiment of this application, which has multiple connection points on its surface.

[0050] Figure 16 is a structural diagram of the support sheet provided in the embodiment of this application, which has an adhesive layer;

[0051] Figure 17 is a schematic diagram of the connection structure between the support piece and the support plate shown in Figure 16;

[0052] Figure 18 is a structural diagram of the first type of support sheet provided in an embodiment of this application;

[0053] Figure 19 is a structural diagram of the second type of support sheet provided in an embodiment of this application;

[0054] Figure 20 is a cross-sectional view of the EE in Figure 19;

[0055] Figure 21 is a connection structure diagram of the support piece and support plate provided in Figure 19;

[0056] Figure 22 is a structural diagram of the third type of support sheet provided in the embodiment of this application;

[0057] Figure 23 is a structural diagram of the fourth type of support sheet provided in the embodiment of this application;

[0058] Figure 24 is a structural diagram of the fifth type of support sheet provided in the embodiment of this application;

[0059] Figure 25 is a structural diagram of the sixth type of support sheet provided in the embodiment of this application;

[0060] Figure 26 is a structural diagram of the seventh type of support sheet provided in the embodiment of this application;

[0061] Figure 27 is a structural diagram of the eighth type of support sheet provided in the embodiment of this application;

[0062] Figure 28 is a structural diagram of a support plate provided in an embodiment of this application;

[0063] Figure 29 is a structural diagram of the ninth type of support sheet provided in the embodiment of this application;

[0064] Figure 30 is a structural diagram of the tenth type of support sheet provided in the embodiment of this application;

[0065] Figure 31 is a structural diagram of the support sheet and buffer layer provided in an embodiment of this application;

[0066] Figure 32 is a schematic diagram of the connection structure of the support sheet, buffer layer and support plate provided in Figure 31;

[0067] Figure 33 is a structural diagram of another buffer layer and support sheet provided in an embodiment of this application;

[0068] Figure 34 is a structural diagram of another buffer layer and support sheet provided in an embodiment of this application.

[0069] Reference numerals: 01-Foldable screen terminal; 10-Foldable screen assembly; 11-Foldable screen; 11a-Non-bending area; 11b-Bending area; 12-Support layer; 12a-Non-bending part; 12b-Bending part; 12c-Hollow structure; 20-Support device; 21-Housing; 22-Rotating mechanism; 100-Shaft cover; 200-Base; 210-Arc groove; 300-Swing arm; 310-First swing arm; 311-Arc slider; 320-Second swing arm; 321-Second cam surface; 400-Door panel; 400a-First door panel; 400b - Second door panel; 500- Connecting block; 510- Slide groove; 600- Damping assembly; 610- Cam bracket; 611- First cam surface; 620- Spring; 700- Support plate; 710- Adhesive layer; 720- Connection point; 730- Flat area; 740- Hollowed-out area; 800- Support piece; 810- Edge area; 810a- First edge area; 810b- Second edge area; 820- Central area; 830- Groove; 840- Sub-support piece; 850- Recess; 860- Notch; 900- Buffer layer; 30- Outer screen. Detailed Implementation

[0070] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0071] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0072] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0073] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

[0074] This application provides a foldable screen terminal, which can be an electronic device with a foldable screen. This application uses a mobile phone as an example of a foldable screen terminal for illustration.

[0075] Specifically, please refer to Figures 1 and 2. Figure 1 is a structural diagram of a foldable screen terminal 01 provided in an embodiment of this application, and Figure 2 is a front view of a foldable screen terminal 01 provided in an embodiment of this application. The foldable screen terminal 01 may include a foldable screen assembly 10 and a support device 20. The foldable screen assembly 10 is disposed on the support device 20, and the support device 20 can drive the foldable screen assembly 10 to rotate between an unfolded state and a folded state. It is understood that Figures 1 and 2 only schematically show some components of the foldable screen terminal 01, and the actual shape, size, position, and structure of these components are not limited by the structures shown in Figures 1 and 2.

[0076] The aforementioned foldable screen assembly 10 is used to display images, videos, etc. Please continue to refer to Figures 1 and 2, and in conjunction with Figure 3, which is a partial cross-sectional structural diagram of the foldable screen assembly 10 provided in this embodiment. The foldable screen assembly 10 may include a foldable screen 11, which may include two non-bending regions 11a and one bending region 11b, with the bending region 11b disposed between the two non-bending regions 11a. When the foldable screen terminal 01 is in a folded state, the bending region 11b of the foldable screen 11 is bent, and the two non-bending regions 11a are disposed opposite to each other. At least the bending region 11b of the foldable screen 11 is a flexible screen. The non-bending region 11a of the foldable screen 11 may be a flexible screen, or a non-flexible screen, or may be partially a flexible screen and partially a non-flexible screen. Therefore, this application does not specifically limit this.

[0077] Among them, the aforementioned foldable screen 11 can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MOLED) display, a quantum dot light-emitting diode (QLED) display, a liquid crystal display (LCD), etc.

[0078] In some embodiments, the foldable screen assembly 10 may further include a support layer 12, which is disposed on the side of the foldable screen 11 away from the display surface and is fixedly connected to the foldable screen 11. Exemplarily, the support layer 12 may be made of stainless steel or other metal materials. Furthermore, the support layer may include two non-bending portions 12a and one bending portion 12b. The two non-bending portions 12a are adhered and fixed to the two non-bending areas 11a of the foldable screen 11, and the bending portion 12b is adhered and fixed to the bending area 11b of the foldable screen 11. For example, the support layer 12 and the foldable screen 11 may be bonded together using an adhesive layer.

[0079] Furthermore, to facilitate the bending of the support layer 12's bent portion 12b together with the bending area 11b of the folding screen 11, a perforated structure 12c can be formed on the bent portion 12b of the support layer 12. For example, the perforation result includes through holes (also known as a bamboo book structure). The perforated structures 12c are arranged regularly in an array, thereby locally thinning the bent portion 12b of the support layer 12 to facilitate bending.

[0080] The aforementioned support device 20 is used to support the folding screen 11. The support device 20 may include a housing 21 and a pivot mechanism 22, with housings 21 on both sides of the pivot mechanism 22. The non-bending areas 11a of the folding screen 11 are respectively attached to the two housings 21, and the bending areas 11b of the folding screen 11 are attached to the pivot mechanism 22. The two housings 21 are rotatably connected via a rotating mechanism, thereby enabling the folding screen terminal 01 to rotate between the unfolded and folded states.

[0081] With the foldable screen terminal 01 in its unfolded state, please refer to Figures 1 and 2, which show the structural diagrams of the foldable screen terminal 01 in its unfolded state. At this time, the aforementioned foldable screen 11 can be fully unfolded, meaning that the bent area 11b and the non-bent area 11a of the foldable screen 11 are on the same plane, ensuring the flatness of the foldable screen 11. In this state, the foldable screen terminal 01 can achieve a large-screen display, providing a better user experience. For example, when watching a movie, the user can use a large screen to watch, which enhances the viewing experience.

[0082] When the foldable screen terminal 01 is in a folded state, please refer to Figure 4, which is a front view of a foldable screen terminal 01 in a folded state according to an embodiment of this application. At this time, the two non-bending areas 11a of the foldable screen terminal 01 are opposite each other, the bending area 11b is bent, and the support device 20 protects the foldable screen 11 from damage; that is, the foldable screen 11 is located between the two housings 21 of the support device 20. In this state, the foldable screen 11 is not visible to the user to prevent scratches or damage, thus providing effective protection for the foldable screen 11. For example, when the phone is not needed, the foldable screen terminal 01 can be folded to avoid damage to the screen.

[0083] In some embodiments, please refer to FIG5, which is a front view of another foldable screen terminal 01 provided in this application embodiment in a folded state. The foldable screen terminal 01 may further include an outer screen 30 (also referred to as a secondary screen), which is disposed on either of the two housings 21 and on the side of the housing 21 away from the foldable screen 11. When the foldable screen terminal 01 is in a folded state, the outer screen 30 can be used to display images, allowing users to operate with one hand, thus making the usage scenarios of the foldable screen terminal 01 more diverse. For example, when a user is riding public transportation, one hand needs to hold the handrail; at this time, the outer screen 30 can be used to display images for one-handed operation, which helps to further improve the user experience.

[0084] Please refer to Figures 6, 7, and 8. Figure 6 is a structural diagram of a rotating shaft mechanism 22 provided in an embodiment of this application. Figure 7 is an exploded view of a rotating shaft mechanism 22 provided in an embodiment of this application. Figure 8 is a partial enlarged view of a rotating shaft mechanism 22 provided in an embodiment of this application. The rotating shaft mechanism 22 may include a shaft cover 100, a base 200, a swing arm 300, a door panel 400, a connecting block 500, a damping assembly 600, and a support plate 700.

[0085] For ease of description in the following embodiments, an XYZ coordinate system is established. When the rotating shaft mechanism 22 is in its unfolded state, the width direction of the rotating shaft mechanism 22 is defined as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. The two housings 21 are distributed along the X-axis on both sides of the rotating shaft mechanism 22. It should be noted that this XYZ coordinate system can be flexibly changed according to actual needs. The embodiments in this application only provide one possible example and should not be considered as a special limitation of this application.

[0086] Along the X-axis, a swing arm 300 and a door panel 400 are provided on both sides of the base 200. The base 200 is located inside the shaft cover 100. For example, the base 200 can be fixed to the shaft cover 100 by means of threaded connection, welding, or bonding. The shaft cover 100 is located between the two housings 21. When the foldable screen terminal 01 is in the folded state described above, the shaft cover 100 can be exposed, that is, the shaft cover 100 is an external component.

[0087] One end of the aforementioned swing arm 300 is rotatably connected to the base 200, and the swing arms 300 on both sides of the base 200 rotate in opposite directions. The rotation axis of the swing arm 300 is parallel to the Y-axis direction, and the other end of the swing arm 300 is connected to the door panel 400. The door panels 400 on both sides of the base 200 are respectively used to be fixedly connected to the two housings 21 shown in Figures 1 and 2. The swing arm 300 can drive the door panel 400 to rotate between the unfolded state and the folded state, so that the foldable screen terminal 01 can rotate between the unfolded state and the folded state.

[0088] Furthermore, the pivot mechanism 22 may include multiple swing arms 300, that is, multiple swing arms 300 may be provided between the base 200 and the door panel 400. The multiple swing arms 300 are distributed at intervals along the Y-axis direction, which helps to improve the connection strength between the door panel 400 and the base 200, thereby improving the overall support strength of the pivot mechanism 22 and improving the reliability of the overall structure.

[0089] In some embodiments, the plurality of swing arms 300 may include a first swing arm 310 and a second swing arm 320. For example, the first swing arm 310 and the base 200 may be connected by an arc-shaped groove 210 and an arc-shaped slider 311, that is, the end of the first swing arm 310 forms an arc-shaped slider 311, the base 200 is provided with an arc-shaped groove 210, and the arc-shaped slider 311 is rotatably disposed in the arc-shaped groove 210 to realize the rotatable connection between the first swing arm 310 and the base 200.

[0090] The second swing arm 320 and the base 200 can be rotatably connected by a rotating shaft and a shaft hole. That is, the second swing arm 320 is provided with a shaft hole, and the base 200 is provided with a rotating shaft. The rotating shaft passes through the shaft hole to realize the rotatable connection between the second swing arm 320 and the base 200.

[0091] Furthermore, the aforementioned swing arm 300 can be directly connected to the door panel 400 or indirectly connected to the door panel 400. In some examples, the pivot mechanism 22 may also include a connecting block 500, through which the swing arm 300 is connected to the door panel 400, so that when the swing arm 300 rotates, it can drive the connecting block 500 and the door panel 400 to rotate together, and at the same time drive the two housings 21 to rotate.

[0092] The swing arm 300 and the connecting block 500 can be rotatably connected or slidably connected. For example, the first swing arm 310 and the connecting block 500 can also be connected by a rotating shaft and a shaft hole, that is, the first swing arm 310 has a shaft hole, and the connecting block 500 has a rotating shaft. The rotating shaft on the connecting block 500 is inserted into the shaft hole on the swing arm 300 to achieve a rotatable connection between the swing arm 300 and the connecting block 500. Alternatively, the connecting block 500 has a sliding groove 510, and the end of the second swing arm 320 away from the base 200 is inserted into the sliding groove 510 on the connecting block 500 to achieve a slidable connection between the swing arm 300 and the connecting block 500.

[0093] The connection method between the door panel 400 and the connecting block 500 is not unique. For example, the door panel 400 and the connecting block 500 can be fixedly connected, that is, the two move synchronously; or, the door panel 400 and the connecting block 500 can also be rotatably connected, that is, while the door panel 400 and the connecting block 500 rotate with the swing arm 300, relative movement can also occur between the door panel 400 and the connecting block 500.

[0094] It should be noted that the various swing arms 300 (e.g., the first swing arm 310 and the second swing arm 320) play different roles in the rotating shaft mechanism 22, resulting in different connection structures between the different swing arms 300 and the base 200 and the door panel 400. That is, the connection methods between the swing arms 300 and the base 200, and between the swing arms 300 and the door panel 400, can be flexibly configured according to the function of the swing arms 300. Therefore, this application embodiment does not impose any special limitations on this.

[0095] Please refer to Figures 6, 7 and 8. During the rotation of the swing arm 300 relative to the base 200, the aforementioned damping component 600 can provide damping force, thereby increasing the user's feel during use and improving the user experience.

[0096] For example, the damping assembly 600 may include a cam support 610 (with a first cam surface 611) and a spring 620 disposed on the base 200. The end of the second swing arm 320 is correspondingly provided with a second cam surface 321. The second swing arm 320 and the cam support 610 are disposed on the same rotating shaft, and the two are meshed with each other through the first cam surface 611 and the second cam surface 321.

[0097] In this way, during the rotation of the second swing arm 320, the second cam surface 321 on the second swing arm 320 rotates relative to the first cam surface 611 on the cam support 610, so that the cam support 610 moves along the axial direction of the rotating shaft (i.e., the Y-axis direction), thereby compressing the spring 620 and generating a damping force.

[0098] In other examples, the two second swing arms 320 distributed along the X-axis can also mesh with each other through a gear set so that the two second swing arms 320 can rotate synchronously and in opposite directions, thereby enabling the rotating shaft mechanism 22 to drive the two housings 21 as shown in Figure 2 to rotate synchronously and in opposite directions.

[0099] Furthermore, the aforementioned support plate 700 is disposed on the side of the base 200 away from the shaft cover 100, and the support plate 700 and the base 200 can be fixedly connected by screws. When the pivot mechanism 22 is in the unfolded state, the support plate 700 and the door panels 400 on both sides together provide support for the bending area 11b of the folding screen 11 shown in FIG3, so as to improve the flatness of the folding screen 11 when unfolded.

[0100] It is understood that there may be one support plate 700 extending along the Y-axis. Alternatively, there may be multiple support plates 700 distributed along the Y-axis so that the support plates 700 can cover the base 200. Therefore, this application does not limit the specific structure of the support plate 700.

[0101] Based on this, please refer to Figures 9 and 10. Figure 9 is a structural diagram of another hinge mechanism 22 provided in an embodiment of this application, and Figure 10 is a structural diagram of another foldable screen terminal 01 in an unfolded state provided in an embodiment of this application. It should be noted that Figure 10 only shows the shaft cover 100, support plate 700, and door panel 400 of the hinge mechanism 22, and Figure 10 only shows a part of the foldable screen 11, not the support layer 12 shown in Figure 3.

[0102] In the foldable screen terminal 01, the hinge mechanism 22 may also include a support plate 800. For example, the support plate 800 may be made of materials such as titanium alloy or stainless steel, or it may be made of other non-metallic materials such as polymers with high modulus and high hardness. Therefore, this application does not make any special limitation in this regard.

[0103] The aforementioned support piece 800 is disposed on the side of the door panel 400 and the support plate 700 near the folding screen 11. This support piece 800 provides support for the bending area 11b of the folding screen 11. For example, the support piece 800 can cover the bending portion 12b of the support layer 12 shown in FIG3. In this way, the support piece 800 can improve the impact resistance of the folding screen terminal 01, thus reducing the risk of failure of the folding screen 11 due to external impact.

[0104] Furthermore, when the foldable screen terminal 01 is in the unfolded state, the support piece 800 can provide better support for the bending area 11b of the foldable screen 11 shown in Figure 3, so as to ensure the flatness of the foldable screen 11.

[0105] In some examples, the aforementioned support piece 800 can be fixedly connected to the door panel 400, that is, the two side edge regions 810 distributed along the X-axis direction on the support piece 800 are respectively attached and bonded to the corresponding door panel 400, so that when the door panel 400 rotates relative to the support plate 700, the support piece 800 and the bending area 11b of the folding screen 11 are bent synchronously.

[0106] It should be noted that when the pivot mechanism 22 is in the unfolded state, the area where the support piece 800 and the door panel 400 are in contact with each other is the aforementioned edge area 810, and the area between the two edge areas 810 is the central area 820. The dashed line in Figure 10 represents the boundary line between the edge area 810 and the central area 820.

[0107] After the support piece 800 and the folding screen 11 are bent, the folding screen 11 is located inside the support piece 800. Because the support piece 800 and the folding screen 11 shown in Figure 3 are stacked, and both the support piece 800 and the folding screen 11 have a certain thickness, the inner radius (i.e., the side of the folding screen 11 away from the support piece 800) and the outer radius (i.e., the side of the support piece 800 away from the folding screen 11) of the support piece 800 and the folding screen 11 after bending are not equal. Therefore, during the bending process of the support piece 800, the support piece 800 will slide relative to the folding screen 11, that is, the support piece 800 will slide relative to the door panels 400 on both sides.

[0108] However, since the two edge regions 810 of the support piece 800 distributed along the X-axis are fixedly connected to the door panel 400, the support piece 800 cannot slide relative to the door panel 400 and the folding screen 11. This may cause excessive stress in the middle region 820 of the support piece 800, resulting in tearing or damage to the support piece 800. Furthermore, the support piece 800 may compress the folding screen 11 located on the inside, causing the folding screen 11 to malfunction.

[0109] Therefore, the aforementioned support piece 800 can be fixedly connected to either of the two door panels 400. For example, please refer to FIG11, which is a structural diagram of another foldable screen terminal 01 in a folded state provided in an embodiment of this application. In FIG11, position A indicates the position of one edge of the support piece 800 when the foldable screen terminal 01 is in an unfolded state.

[0110] The two door panels 400 are the first door panel 400a and the second door panel 400b, respectively. The two edge regions 810 of the support piece 800 are the first edge region 810a and the second edge region 810b, respectively. The first edge region 810a is bonded and fixed to the first door panel 400a, and the second edge region 810b is in contact with the second door panel 400b.

[0111] In this way, when the foldable screen terminal 01 rotates from the unfolded state to the folded state, since the first edge region 810a is fixed, the second edge region 810b of the support piece 800 and the second door panel 400b can slide relative to each other. This avoids the formation of areas with high local stress when the support piece 800 is bent, which could lead to tearing and damage of the support piece 800 or compression of the foldable screen 11.

[0112] However, during the rotation of the foldable screen terminal 01, the first edge region 810a and the first door panel 400a remain relatively stationary, causing the second edge region 810b and the middle region 820 of the support piece 800 to slide relative to the foldable screen 11. Therefore, the sliding stroke of the second edge region 810b relative to the second door panel 400b is relatively large, as shown by distance D in Figure 11. This causes abnormal noise due to friction between the support piece 800 and the second door panel 400b, affecting the user experience.

[0113] To address the aforementioned issues, this application provides a hinge mechanism 22, which can be applied to the foldable screen terminal 01 described above. Please refer to Figure 12, which is a structural diagram of another foldable screen terminal 01 in a folded state according to this application embodiment. In Figure 12, position B indicates the position of the two side edges of the support piece 800 when the foldable screen terminal 01 is in an unfolded state.

[0114] The pivot mechanism 22 may include the aforementioned shaft cover 100, door panel 400, support plate 700, and support piece 800. The connection structure between the shaft cover 100, support plate 700, door panel 400, and swing arm 300 is the same as in the above embodiment. The support piece 800 is fixedly connected to the support plate 700, that is, the central region 820 of the support piece 800 is fixedly connected to the support plate 700, and the two edge regions 810 of the support piece 800 are respectively in contact with the two door panels 400.

[0115] In this way, during the bending process of the support piece 800, the middle area 820 of the support piece 800 and the support plate 700 remain fixed, while the two edge areas 810 on both sides of the support piece 800 slide relative to the folding screen 11, that is, the two edge areas 810 on both sides of the support piece 800 slide relative to the two door panels 400 respectively.

[0116] As described above, when the support piece 800 is bent, it will slide relative to the folding screen 11 and the door panel 400. Since the central region 820 of the support piece 800 provided in this embodiment is fixedly connected to the support plate 700, that is, the central region 820 is fixed, the sliding strokes of the two edge regions 810 on both sides of the support piece 800 are independent of each other. That is, the sliding stroke of each edge region 810 is less than the distance D shown in Figure 11, thereby reducing the sliding stroke of the two edge regions 810 relative to the corresponding door panel 400, as shown by distances D1 and D2 in Figure 12, and the sum of distances D1 and D2 is equal to the distance D shown in Figure 11.

[0117] Based on this, since the sliding stroke of the edge region 810 relative to the door panel 400 is reduced, that is, the relative movement time between the support piece 800 and the door panel 400 is reduced, it is beneficial to reduce the frictional force generated by the relative sliding between the edge region 810 of the support piece 800 and the corresponding door panel 400, thereby reducing the risk of abnormal noise generated by the support layer 12 during bending, and improving the user experience.

[0118] In some embodiments, please refer to FIG13, which is a structural diagram of a support plate 800 provided in an embodiment of this application having a plurality of connection points 720. A plurality of connection points 720 may be provided between the support plate 800 and the support plate 700, and the surface of the support plate 800 has a center line C parallel to the Y-axis direction. The plurality of connection points 720 are disposed on the center line C and are distributed at intervals along the center line C. Exemplarily, the connection points 720 may be fasteners (including screws or rivets, etc.) or weld points provided between the support plate 800 and the support plate 700, so that the support plate 800 is locked and fixed to the support plate 700 by fasteners, or the support plate 800 is welded and fixed to the support plate 700.

[0119] In this case, please refer to Figure 14, which is a structural diagram of another support sheet 800 provided in an embodiment of this application, on which multiple connection points 720 are provided. The support sheet 800 may include a groove 830, which penetrates both sides of the support sheet 800 along the thickness direction of the support sheet 800. In a plane parallel to the surface of the support sheet 800, the groove 830 may be arranged around the connection points.

[0120] In some examples, the aforementioned groove 830 can extend around the connection point 720 to form an arc-shaped structure. Alternatively, multiple grooves 830 can be provided around the circumference of the connection point 720. For example, along the X-axis direction, grooves 830 are provided on both sides of the connection point 720, and the grooves 830 can extend along the Y-axis direction.

[0121] In this way, during the fastening or welding process between the support plate 800 and the support plate 700, cracks may be generated on the support plate 800. When the crack extends to the groove 830, it can be prevented from continuing to extend, thereby reducing the risk of the support plate 800 breaking due to excessive crack extension and improving the reliability of the support plate 800.

[0122] Furthermore, along a direction parallel to the surface of the support layer 12, the distance between the two grooves 830 on both sides of the connection point 720 decreases from the middle of the grooves 830 towards both ends. For example, along the X-axis, the distance between the ends of the two grooves 830 is smaller than the distance between the middle of the two grooves 830, which helps to reduce the risk of the cracks extending outward from the gap between the two grooves 830, and further improves the reliability of the support piece 800.

[0123] For example, please continue to refer to Figure 14. On the surface of the support surface, the groove 830 can be formed into an arc-shaped structure so that the distance between the ends of the two grooves 830 on both sides of the connection point 720 is small, and the distance between the middle of the two grooves 830 on both sides of the connection point 720 is large.

[0124] Alternatively, please refer to Figure 15, which is a structural diagram of another support piece 800 provided in this application embodiment, on which multiple connection points 720 are provided. The two adjacent inner walls of the two grooves 830 on both sides of the connection point 720 form an arc surface structure. The inner walls of the two grooves 830 on both sides of the connection point 720 that are far apart from each other are parallel to the Y-axis direction, thereby making the distance between the ends of the two grooves 830 less than the distance between the middle parts of the two grooves 830.

[0125] In this case, the distance between the two grooves 830 gradually decreases, meaning that the two adjacent inner walls of the two grooves 830 can form the aforementioned smoothly extending arcuate structure. Alternatively, the two inner walls of the two grooves 830 that are close to each other can also form inclined surfaces, so that the distance between them gradually decreases from the middle to both ends.

[0126] It is understood that the two adjacent inner walls between the two tanks can also adopt other smoothly extending structures so that the distance between the two tanks 830 on both sides of the connection point 720 decreases from the middle to both ends. Therefore, this application does not impose any special limitations on this.

[0127] Furthermore, since multiple connection points 720 are provided between the support piece 800 and the support plate 700, multiple sets of grooves 830 can be provided. These multiple sets of grooves 830 are spaced apart along the Y-axis, with each set including one or more grooves 830, and each set of grooves 830 is connected by the aforementioned connection points 720. This prevents the propagation of cracks originating at the connection points 720 while also ensuring the overall support strength of the support piece 800.

[0128] For example, the aforementioned multiple sets of slots 830 can be configured one-to-one with multiple connection points 720, that is, each set of slots 830 can have one connection point 720. Alternatively, each set of slots 830 can also have multiple connection points 720, for example, one set of slots 830 can have two connection points 720. Therefore, the embodiments of this application do not specifically limit the correspondence between the slots 830 and the connection points 720.

[0129] In other embodiments, please refer to Figures 16 and 17. Figure 16 is a structural diagram of the support sheet 800 provided in this embodiment of the application, wherein an adhesive layer 710 is provided. Figure 17 is a schematic diagram of the connection structure between the support sheet 800 and the support plate 700 provided in Figure 16. The area where the support sheet 800 and the support plate 700 are fixedly connected can form a surface-to-surface contact. For example, the support sheet 800 and the support plate 700 can be bonded and fixed together by the adhesive layer 710. The adhesive layer 710 may include dispensing adhesive, backing adhesive, or hot melt adhesive film, etc., and the adhesive layer 710 extends along the center line C.

[0130] Furthermore, there may be only one adhesive layer 710 between the support sheet 800 and the support plate 700, or there may be multiple adhesive layers 710 between the support sheet 800 and the support plate 700, i.e., multiple adhesive layers 710 are distributed at intervals along the center line C. And each adhesive layer 710 is symmetrically arranged along the center line C.

[0131] In this case, the connection structure between the support piece 800 and the support plate 700 is set along the center line C. When the support piece 800 is bent, the tension on the two edge areas 810 of the support piece 800 is equal, so that the sliding stroke of the two edge areas 810 relative to the door panel 400 is equal, avoiding the situation where the stroke of one edge area 810 is too large, which would cause abnormal noise. This helps to further reduce the risk of abnormal noise.

[0132] Based on this, to further improve the flatness of the support plate 800, please refer to Figure 18, which is a structural diagram of the first type of support plate 800 provided in the embodiment of this application. The support plate 800 may include a plurality of sub-support plates 840, which are distributed along the Y-axis direction, and each of the sub-support plates 840 is fixedly connected to the support plate 700.

[0133] The centerlines of the multiple sub-support pieces 840 are arranged collinearly to form the aforementioned centerline C, so that the fixed connection point 720 between each sub-support piece 840 and the support plate 700 is arranged along the centerline C.

[0134] In this way, by dividing the support piece 800 into multiple smaller sub-support pieces 840, the risk of defects such as dents or bulges appearing on the sub-support pieces 840 is reduced, ensuring the flatness of each sub-support piece 840 and improving the support effect on the foldable screen 11. Furthermore, during the bending process of the sub-support pieces 840, bulges and dents will not become unstable and deformed, preventing abnormal noises caused by bulges turning into dents, thus further reducing the risk of abnormal noises during the rotation of the foldable screen terminal 01.

[0135] In some embodiments, please refer to Figures 19 and 20. Figure 19 is a structural diagram of the second type of support sheet 800 provided in this application embodiment, and Figure 20 is an EE cross-sectional view of Figure 19. The support sheet 800 may have multiple recesses 850, which are spaced apart on the surface of the support sheet 800. In this structure, the recesses 850 on the support sheet 800 are formed, thereby locally thinning the support sheet 800, i.e., reducing the stiffness of the area where the recesses 850 are formed, thus reducing the bending difficulty of the area where the recesses 850 are formed. This makes the support sheet 800 easier to bend, reducing the risk of the foldable screen terminal 01 being difficult to rotate due to the support sheet 800 during user use, and improving the user experience.

[0136] Furthermore, the recessed portion 850 can release local stress on the support piece 800, thereby further reducing the risk of defects such as bulges and pits appearing on the support piece 800, and reducing the risk of abnormal noise caused by instability of the support piece 800 due to bulges and pits during bending.

[0137] For example, the recessed portion 850 may include a blind hole or a through hole, and the recessed portion 850 shown in Figures 19 and 20 is a blind hole. For example, a blind hole or a through hole is formed on the surface of the support sheet 800 by etching. This allows for local thinning of the support sheet 800 to reduce local stiffness, making the support sheet 800 easier to bend.

[0138] Furthermore, please refer to Figure 21, which is a connection structure diagram of the support piece 800 and the support plate 700 provided in Figure 19. When the recess 850 is a blind hole, that is, the recess 850 does not penetrate through both sides of the support piece 800, the recess 850 can be formed on the side of the support piece 800 facing the support plate 700, so that the surface of the support piece 800 facing the folding screen 11 forms a complete support plane, which is beneficial to improving the support effect on the folding screen 11.

[0139] Please refer back to Figures 19 and 20. Along the Y-axis, the support sheet 800 has at least one set of recesses 850. Each set of recesses 850 includes at least one recess 850, and when each set has two or more recesses 850, the recesses 850 are distributed along the X-axis. Furthermore, along the X-axis, the recesses 850 can be located in the central region 820 of the support sheet 800. This allows the central region 820 of the support sheet 800 to be locally thinned through the recesses 850, making the support sheet 800 easier to bend and reducing the difficulty of bending the support sheet 800.

[0140] It is understood that in some other possible embodiments, the recess 850 may also be formed on both sides of the edge region 810. Therefore, this application does not make any special limitation in this regard.

[0141] Furthermore, the support piece 800 is fixedly connected to the support plate 700, and the connection points 720 between them are spaced apart along the center line C. Therefore, the recesses 850 on the support piece 800 and the connection points 720 can be spaced apart. For example, along the X-axis direction, the recesses 850 are respectively provided on both sides of the connection point 720. When the recesses 850 are through holes, they can prevent cracks generated at the connection point 720 from extending to the surrounding area.

[0142] It is understood that the support piece 800 can also be fixedly connected to the support plate 700 via the adhesive layer 710 shown in Figures 16 and 17. Therefore, this application does not impose any special limitations on this. In the following embodiments, the connection between the support piece 800 and the support plate 700 via the connection point 720 will be used as an example for illustration.

[0143] In other embodiments, please refer to FIG22, which is a structural diagram of the third type of support sheet 800 provided in the embodiments of this application. The support sheet 800 may also have a recessed portion 850 and the aforementioned groove 830, with the aforementioned connection point 720 provided between the grooves 830. The grooves 830 and the recessed portion 850 are staggered on the surface of the support sheet 800, so that the support sheet 800 is easy to bend and the risk of failure due to cracks can be reduced.

[0144] In some examples, the above-mentioned recess 850 may be provided as a group, and a group of recesses 850 includes multiple recesses 850, each recess 850 extending along the Y-axis direction, and the multiple recesses 850 distributed along the X-axis direction (as shown in Figure 19).

[0145] Furthermore, please refer to Figure 23, which is a structural diagram of the fourth type of support sheet 800 provided in the embodiment of this application. When the support sheet 800 includes the above-mentioned multiple sub-support sheets 840, each sub-support sheet 840 may be provided with a set of recesses 850, and each sub-support sheet 840 is provided with at least one connection point 720, so that each sub-support sheet 840 is fixedly connected to the support plate 700.

[0146] Alternatively, please refer to Figure 24, which is a structural diagram of the fifth type of support sheet 800 provided in the embodiment of this application. The support sheet 800 may be provided with multiple sets of recesses 850, which are spaced apart along the Y-axis direction. Each set of recesses 850 includes multiple recesses 850 spaced apart along the X-axis direction, and each recess 850 extends along the Y-axis direction.

[0147] In this case, since the above-mentioned multiple sets of recesses 850 are distributed at intervals along the X-axis direction, the connection point 720 can be set between two adjacent sets of recesses 850 so that the support piece 800 and the support plate 700 can be fixedly connected.

[0148] Furthermore, please refer to Figure 25, which is a structural diagram of the sixth type of support sheet 800 provided in the embodiments of this application. When the support sheet 800 includes the above-mentioned multiple sub-support sheets 840, each sub-support sheet 840 may be provided with multiple sets of recesses 850. In this case, each sub-support sheet 840 is provided with at least one connection point 720, and the connection points 720 are all located between two adjacent sets of recesses 850.

[0149] In other examples, please refer to Figure 26, which is a structural diagram of the seventh type of support sheet 800 provided in the embodiments of this application. Multiple sets of recesses 850 are provided, distributed along the Y-axis direction. Each set of recesses 850 includes multiple recesses 850 distributed along the X-axis direction, and each recess 850 can extend along the X-axis direction. For example, the two recesses 850 distributed along the X-axis direction shown in Figure 26 constitute a set.

[0150] In this case, since the recess 850 extends along the X-axis direction, that is, both ends of the recess 850 along the length direction are distributed along the X-axis direction, the ends of the recess 850 will not be further torn along the Y-axis direction during the bending of the support piece 800.

[0151] Furthermore, the recessed portion 850 can extend along the X-axis to the edge region 810 of the support piece 800. For example, in each group of recessed portions 850 shown in FIG. 26, two recessed portions 850 can extend along the X-axis to the two edge regions 810 on both sides of the support piece 800, thereby further reducing the bending difficulty of the support piece 800. In addition, the aforementioned connection points 720 can be provided between the recessed portions 850 distributed along the X-axis, and multiple connection points 720 are spaced apart along the Y-axis.

[0152] Based on the above examples, the recessed portion 850 provided in this application embodiment can be symmetrically arranged along the center line C. For example, referring to Figure 26, multiple recessed portions 850 can be symmetrically distributed on both sides of the center line C. Alternatively, referring to Figure 27, which is a structural diagram of the eighth type of support sheet 800 provided in this application embodiment, the recessed portions 850 can form an axisymmetric structure with the center line C as the axis of symmetry. Or, some of the recessed portions 850 on the support sheet 800 can be symmetrically distributed on both sides of the center line C, with some recessed portions 850 forming an axisymmetric structure with the center line C as the axis of symmetry. Therefore, this application does not impose any special limitations on this.

[0153] In this way, on the one hand, the force is evenly distributed on both sides of the center line C when the support plate 800 is bent, which helps to further reduce the risk of abnormal noise from the support plate 800. On the other hand, the recessed portion 850 can be staggered along the X-axis, so that the recessed portion 850 can cover a larger area on the support plate 800 along the X-axis, which can further reduce the risk of abnormal noise from the support plate 800 when it is bent.

[0154] Furthermore, the connection point 720 can be set between two recesses 850 symmetrically arranged on both sides of the center line C, so that the connection point 720 and the recesses 850 forming the axisymmetric structure can be staggered to avoid mutual interference, which is conducive to improving the reliability of the overall structure.

[0155] It is understood that on the support plate 800 shown in Figures 23-27 above, a groove 830 as shown in Figure 22 can be opened at the connection point 720. The groove 830 and the recessed part 850 can be distributed at intervals. Its specific structure is the same as the structure shown in Figure 22, so it will not be described again.

[0156] In other embodiments, please refer to Figures 28 and 29. Figure 28 is a structural diagram of a support plate 700 provided in an embodiment of this application, and Figure 29 is a structural diagram of a ninth type of support piece 800 provided in an embodiment of this application. The surface of the support plate 700 facing the support piece 800 may have a flat area 730 and a hollow area 740. The area on the support piece 800 opposite to the flat area 730 is provided in the recess 850. For example, the through hole (as shown in Figure 28) opened on the support plate 700 for connecting with the base 200 shown in Figure 9 forms the hollow area 740. Alternatively, during the rotation of the swing arm 300 shown in Figure 10, there may be protruding protrusions forming on the surface of the support plate 700 facing the support piece 800. That is, the uneven areas on the surface of the support plate 700 facing the support piece 800 are all hollow areas 740.

[0157] It is understood that the aforementioned hollow area 740 can be a through hole opened on the support plate 700, or a clearance opening opened on the support plate 700, to avoid the swing arm 300 shown in Figure 6, or other structural components of the rotating shaft mechanism 22. Therefore, this application does not impose any special limitations on this.

[0158] Based on this, a recessed portion 850 is provided on the support plate 800 in the area corresponding to the flat area 730, that is, no recessed portion 850 is provided on the area of ​​the support plate 800 corresponding to the hollow area 740 on the support plate 700, so that the area of ​​the support plate 800 corresponding to the hollow area 740 has higher support strength, thereby improving the support effect of the support plate 800 on the folding screen 11.

[0159] Furthermore, the connection points 720 on the support plate 800 are staggered with the recesses 850. For example, as shown in FIG29, the connection points 720 are located between the recesses 850 distributed along the Y-axis direction, so as to facilitate the fixed connection between the support plate 800 and the support plate 700. Additionally, the support plate 800 may also have grooves 830 as shown in FIG22 corresponding to the connection points 720.

[0160] For example, when a user operates the foldable screen 11 with a stylus, and the stylus touches the area corresponding to the aforementioned through-hole on the foldable screen 11, the support plate 800 has a high support strength because the corresponding area does not have a recess 850. Therefore, the stylus will not form a pit on the foldable screen 11, which is beneficial to improving the user experience. Alternatively, when a protrusion is formed on the support plate 700 and presses against the support plate 800, the protrusion can be shielded because the corresponding area on the support plate 800 does not have a recess 850, thus reducing the risk of the protrusion pressing against the foldable screen 11.

[0161] It is understood that the flat area 730 and the hollow area 740 on the support plate 700 can be flexibly set according to actual design needs. The above example is only one possibility and does not impose specific limitations on the structure of the support plate 700. Therefore, this application does not impose any special limitations on this.

[0162] Please refer to Figure 30, which is a structural diagram of the tenth type of support piece 800 provided in this application embodiment. The recessed portion 850 is not shown in Figure 30. The edge region 810 of the support piece 800 distributed along the X-axis direction may have a notch 860. Since the support piece 800 is bent during the rotation of the folding screen terminal 01, and the edge region 810 of the support piece 800 can slide relative to the door panel 400, the notch 860 is used to avoid contact with other adjacent structures when the edge region 810 of the support piece 800 slides relative to the door panel 400.

[0163] For example, a partial area between the folding screen 11 and the door panel 400 shown in FIG10 can be provided with an adhesive structure. By opening a notch 860 in the edge area 810 of the support piece 800, the edge area 810 of the support piece 800 and the adhesive structure will not come into contact with each other, thereby preventing the edge area 810 of the support piece 800 from contacting the adhesive structure during the sliding process relative to the door panel 400, which would cause the adhesive structure to tear, so as to ensure that the adhesive structure between the folding screen 11 and the door panel 400 will not be damaged.

[0164] It is understood that the aforementioned adhesive structure can also be formed between the folding screen 11 and other structural components. Furthermore, multiple notches 860 can be formed on both side edge regions 810 distributed along the X-axis direction on the support sheet 800, and the notches 860 can also be used to avoid other components. Therefore, this application does not impose any special limitations on the location, number, or specific function of the notches 860.

[0165] Furthermore, multiple connection points 720 and corresponding grooves 830 are provided on the aforementioned support piece 800, thereby facilitating the connection between the support piece 800 and the support plate 700 and reducing the risk of cracks extending from the connection points 720 to the surrounding areas. Additionally, the support piece 800 may also have recesses 850 as shown in Figures 19-27, with the same specific structure as in the above embodiment. Therefore, this application will not repeat the description therein.

[0166] Based on the above embodiments, please refer to Figures 31 and 32. Figure 31 is a structural diagram of the support piece 800 and the buffer layer 900 provided in the embodiment of this application, and Figure 32 is a schematic diagram of the connection structure of the support piece 800, the buffer layer 900, and the support plate 700 provided in Figure 31. The rotating shaft mechanism 22 may further include a buffer layer 900, which is attached to the surface of the support piece 800 away from the support plate 700, that is, the buffer layer 900 is disposed between the support piece 800 and the folding screen 11.

[0167] For example, the buffer layer 900 can be made of materials such as Mylar, foam, or silicone film. Furthermore, the buffer layer 900 can cover the central region 820 of the support sheet 800, or the buffer layer 900 can cover the edge regions 810 on both sides of the support sheet 800.

[0168] In this way, when the foldable screen terminal 01 is impacted, the buffer layer 900 can absorb the impact energy through deformation and compression, thereby reducing the risk of the impact force being transmitted to the foldable screen 11 and effectively protecting the foldable screen 11.

[0169] Alternatively, please refer to Figure 33, which is a structural diagram of another buffer layer 900 and support piece 800 provided in an embodiment of this application. The buffer layer 900 can also be attached to the surface of the support piece 800 facing the door panel 400, that is, the buffer layer 900 is disposed between the door panel and the support piece 800, and a buffer layer 900 is disposed between the door panel 400 on both sides and the support piece 800. In this structure, the buffer layer 900 can be made of a relatively smooth material, such as the aforementioned Mylar or silicone film material, so that when the buffer layer 900 slides relative to the door panel 400, the friction generated can be further reduced, which helps to further reduce the risk of abnormal noise when the folding screen terminal 01 rotates.

[0170] In some embodiments, please refer to FIG34, which is a structural diagram of another buffer layer 900 and support piece 800 provided in this application embodiment. The buffer layer 900 is attached to the surface of the support piece 800 facing the folding screen 11, and the buffer layer 900 extends along the X-axis direction so that the buffer layer 900 covers the two edge regions 810 on both sides of the support piece 800, and the buffer layer 900 is attached to the surface of the support piece 800 facing the door panel 400. In this way, the buffer layer 900 can cover the entire surface of the support piece 800 facing the folding screen 11, thereby increasing the contact area between the buffer layer 900 and the folding screen 11, which is beneficial to further improve the protection effect of the folding screen 11.

[0171] Furthermore, the buffer layer 900 adheres to the surface of the support piece 800 facing the support plate 700, meaning the buffer layer 900 can adhere to the door panel 400. When the buffer layer 900 is made of a relatively smooth material, such as the aforementioned Mylar or silicone film material, the buffer layer 900 slides relative to the door panel 400 during the rotation of the foldable screen terminal 01. This reduces the friction between the buffer layer 900 and the door panel 400, further reducing the risk of abnormal noises during the rotation of the foldable screen terminal 01 and improving the user experience.

[0172] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0173] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotation shaft mechanism characterized by comprising: The utility model relates to a support plate, door plate, support sheet, support plate, door plate, support sheet fixed connection, support sheet and door plate can slide relative, door plate and support plate are located the same side of support sheet in the case of door plate is in the unfolded state, door plate and support plate are located between two door plates in the case of door plate is in the folded state. The utility model relates to a support plate, door plate, support sheet, support plate, door plate, supportsheet fixed connection, support sheet and door plate can slide relative, door plate and support plate are locatedthe same side of support sheet in the case of door plate is in the unfolded state, door plateand support plate are located between two door plates in the case of door plate is in the foldedstate. The utility model relates to a support plate, door plate, support sheet, support plate,door plate, support sheet fixed connection, support sheet and door plate can slide relative, door plate andsupport plate are located the same side of support sheet in the case of door plate is in the unfoldedstate, door plate and support plate are located between two door plates in the case of door plate isin the folded state. The utility model relates to a support plate, door plate, support sheet, the support plate, the door plate, the support sheet fixed connection, the support sheet and the door plate can slide relative, the door plate and the support plate are located the same side of the support sheet in the case of the door plate is in the unfolded state, the door plate and the support plate are located between two door plates in the case of the door plate is in the folded state. The utility model relates to a support plate, door plate and support sheet fixed connection, support sheet and door plate can slide relative, door plate and support plate located the same side of support sheet in the case of door plate is in the unfolded state, the door plate and the support plate are located between two doors in the case of the door plate is in the folded state.

2. The rotation shaft mechanism according to claim 1, wherein The utility model relates to a plurality of connecting points are arranged between the support sheet and the support plate, and the plurality of connecting points are distributed along the length direction of the rotating shaft mechanism.

3. The rotation axis mechanism according to claim 2, wherein The utility model relates to a plurality of grooves are arranged on the support sheet, and the plurality of grooves penetrate the support sheet and are arranged around the connecting points.

4. The rotation shaft mechanism according to claim 3, wherein The utility model relates to a plurality of grooves are arranged on the two sides of the connecting points along the width direction of the rotating shaft mechanism.

5. The rotation shaft mechanism according to claim 4, wherein The distance between the two grooves on the two sides of the connecting points is reduced from the middle to the two ends of the groove.

6. A pivot mechanism according to any one of claims 3 to 5, wherein, The utility model relates to a plurality of groups of grooves, and each group of grooves comprises a plurality of grooves.

7. The revolute mechanism according to any one of claims 1-6, wherein The utility model relates to a plurality of sub-support sheets are arranged on the support sheet, and the plurality of sub-support sheets are distributed along the length direction of the rotating shaft mechanism.

8. The revolute mechanism according to any one of claims 1-7, wherein The utility model relates to a plurality recesses are arranged on the surface of the support sheet, and the plurality of recesses are distributed on the support sheet.

9. The revolute mechanism according to any one of claims 1-8, wherein The utility model relates to a plurality recesses are arranged on the surface of the support sheet.

10. The rotation shaft mechanism according to claim 9, wherein The utility model relates to a plurality recesses are arranged on the surface of each sub-support sheet.

11. A pivot mechanism according to claim 9 or 10, wherein The utility model relates to a plurality recesses are arranged on the surface of the support plate.

12. The rotation mechanism according to claim 11, wherein The utility model relates to a plurality recesses are arranged on the surface of the support plate.

13. A pivot mechanism according to any one of claims 9 to 12, wherein ​ 14. A pivot mechanism according to any one of claims 9 to 12, wherein ​ 15. The revolute mechanism according to any one of claims 1-14, wherein ​ 16. The revolute mechanism according to any one of claims 1-15, wherein ​ 17. The revolute mechanism according to any one of claims 1-16, wherein, ​ 18. The rotational axis mechanism of claim 17, wherein, ​ 19. A foldable screen terminal, comprising: ​ A housing; A rotating shaft mechanism, the rotating shaft mechanism is connected with the housing on both sides; A folding screen assembly is arranged on the housing and the rotating shaft mechanism. 20.The foldable screen terminal of claim 19, wherein, The folding screen assembly comprises a folding screen and a support layer, the support layer is arranged between the folding screen and a support sheet of the rotating shaft mechanism; and the support layer is at least partially opposite to the support sheet.

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