Rotating shaft mechanism and foldable screen terminal

Abstract

The present application relates to the technical field of electronic devices. Provided are a rotating shaft mechanism and a foldable screen terminal. The present application is used to solve the problem that once a foldable screen terminal drops in a folded state, it is likely to cause relatively large local stress on a foldable screen, resulting in damage. The rotating shaft mechanism comprises a base, door panels and swing arms, wherein the door panels and the swing arms are arranged on two sides of the base, first ends of the swing arms are rotationally connected to the base, and second ends of the swing arms are slidably connected to the door panels; and the swing arms have first arc-shaped supporting faces formed by recessing. The swing arms and the door panels can rotate relative to the base between an unfolded position and a folded position; and when the swing arms are in the folded position, the first arc-shaped supporting faces are opposite to part of a bent area of a foldable screen.

Description

A rotating shaft mechanism and a folding screen terminal Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a hinge mechanism and a folding screen terminal. Background Art

[0002] Foldable screen terminals can rotate between an unfolded state and a folded state. Since foldable screen terminals can realize a large screen display in the unfolded state and are easy to carry in the folded state, they are becoming more and more popular among consumers.

[0003] However, when the folding screen terminal is in a folded state, if it falls, it is easy to cause the folding screen and the swing arm of the hinge mechanism to squeeze each other, causing large local stress on the folding screen and causing damage to the folding screen.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a hinge mechanism and a folding screen terminal, which are used to solve the problem that the folding screen terminal falls in a folded state, which easily causes the folding screen and the swing arm of the hinge mechanism to be squeezed against each other, resulting in large local stress on the folding screen and causing damage to the folding screen.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a hinge mechanism is provided for use in a foldable screen terminal. The foldable screen terminal includes a foldable screen, which includes a first portion, a second portion, and a third portion. The third portion is located between the first portion and the second portion and is configured to oppose the hinge mechanism. The hinge mechanism includes a base, a door panel, and a swing arm. The door panel and the swing arm are provided on both sides of the base. The first end of the swing arm is rotatably connected to the base, and the second end of the swing arm is slidably connected to the door panel. The swing arm has a first curved support surface formed in a recess. The swing arm and the door panel are rotatable relative to the base between an extended position and a folded position. When the swing arm is in the folded position, the first curved support surface opposes a partially bent region of the third portion.

[0008] The hinge mechanism provided in the first aspect of the present application is applied to a folding screen terminal. When the folding screen terminal is in a folded state and falls, the door panel of the hinge mechanism is slidably connected to the swing arm. Therefore, after the folding screen terminal falls and collides with other objects, the folding screen terminal will be subjected to an impact force, which can cause relative sliding between the door panel and the swing arm. At the same time, because the door panel and the folding screen are indirectly connected through other structural members, when the door panel slides relative to the swing arm, it will drive the folding screen to slide synchronously. That is, after the folding screen terminal falls and collides, the folding screen and the door panel will move toward the base. At this time, the bent area of ​​the folding screen will abut against the swing arm.

[0009] In this case, because the first curved support surface formed on the swing arm is a concave curved surface, and when the swing arm is in the folded position, that is, when the foldable screen terminal is in the folded state, at least a portion of the third portion of the foldable screen is bent to form an arc-shaped structure. Therefore, when the foldable screen terminal falls and collides, the first curved support surface on the swing arm can provide support for the partially bent area of ​​the third portion of the foldable screen. After the bent area of ​​the third portion is affixed to the first curved support surface, the curved structure can still be maintained. In other words, the bent area of ​​the third portion will not undergo significant deformation, which helps to reduce the risk of excessive local stress on the foldable screen, which may lead to localized dead bends or sharp corners, thereby effectively protecting the foldable screen.

[0010] In one possible implementation of the first aspect of the present application, the third portion includes at least a first region and a second region, with the second region provided on both sides of the first region, and the first region opposing the base; when the swing arm is in the folded position, the first region and the second region are in a bent state, and the first curved support surface opposes the second region. In this structure, when the swing arm is in the folded position, the first curved support surface opposes the second region. That is, if the foldable screen terminal falls and collides, the first curved support surface can provide support for the second region, thereby reducing the risk of excessive stress on the third portion of the foldable screen, thereby reducing the risk of dead folds or sharp corners in a local area of ​​the third portion of the foldable screen.

[0011] In one possible implementation of the first aspect of the present application, the curvature of the first curved support surface is a first curvature, the first curvature is greater than or equal to 30°, and the first curvature is less than or equal to 90°; the radius of the first curved support surface is a first radius, the first radius is greater than or equal to 2mm, and the first radius is less than or equal to 3.5mm. In this way, the size of the first curved support surface is within this range, which helps to reduce the difference in the curved surface structure formed by the first curved support surface and the second area. That is, after the second area abuts and adheres to the first curved support surface, it helps to reduce the deformation of the second area, thereby helping to reduce the local stress of the folding screen.

[0012] In one possible implementation of the first aspect of the present application, when the swing arm is in the folded position, a first gap is defined between the bent region of the third portion and the first curved support surface. With this structure, if the foldable screen terminal falls, the foldable screen needs to move a certain distance before it can abut against the first curved support surface, providing a cushioning effect and further minimizing deformation of the foldable screen.

[0013] In one possible implementation of the first aspect of the present application, the ratio of the minimum width to the maximum width of the first gap is greater than or equal to 70%. With this structure, significant deformation of the second region due to a large local spacing between the second region and the first curved support surface can be avoided, further reducing the risk of significant stress on the folding screen and damage to the folding screen.

[0014] In a possible implementation of the first aspect of the present application, a width of the first gap is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

[0015] In one possible implementation of the first aspect of the present application, the hinge mechanism further includes a shaft cover, with the base disposed inside the shaft cover; a second gap is defined between at least a portion of the base and the shaft cover. With this structure, when the foldable screen terminal falls, portions of the base may deform. The second gap provides space for the base and the shaft cover to deform. For example, a portion of the base can move relative to the shaft cover toward the shaft cover, thereby reducing the blocking force exerted by the base on the foldable screen, thereby mitigating the risk of damage to the foldable screen caused by significant deformation.

[0016] In one possible implementation of the first aspect of the present application, when the swing arm is in the folded state, a first gap exists between the first curved support surface and the second area, and the maximum width of the first gap is less than or equal to the minimum width of the second gap. With this structure, the probability of the base obstructing the folding screen can be further reduced, allowing the second area of ​​the folding screen to properly abut and fit against the first curved support surface.

[0017] In one possible implementation of the first aspect of the present application, the surface of the base facing the third portion includes a second curved support surface, the axis of which is parallel to the rotation axis of the swing arm. When the swing arm is in the folded position, at least a portion of the third portion faces the second curved support surface. This structure enhances the base's support for the folding screen.

[0018] In one possible implementation of the first aspect of the present application, the surface of the base facing the third portion further includes support planes, with two support planes disposed on either side of the second curved support surface along the distribution direction of the two door panels; when the swing arm is in the extended position, at least a portion of the third portion is in contact with the support planes. In this structure, i.e., the two support planes are distributed on either side of the second curved support surface along the width of the folding screen terminal, when the folding screen terminal is in the extended state, i.e., when the swing arm is in the extended position, the support planes can support at least a portion of the third portion of the folding screen, thereby further enhancing the base's support effect on the folding screen.

[0019] In one possible implementation of the first aspect of the present application, when the swing arm is in the folded position, along the distribution direction of the door panel and the base, the edge of the first curved support surface closest to the base is the first edge, and the first edge is located on the plane where the support plane is located. In this way, when the foldable screen terminal falls, the foldable screen and the base move toward the shaft cover, that is, along the width direction of the foldable screen terminal, the support plane moves between the first edge and the shaft cover, which helps to form a smoother curved structure between the first edge of the second curved support surface and the edge of the second curved support surface, thereby reducing the risk of large deformation in the gap between the swing arm and the base where the second area and the first area meet, resulting in a dead bend or sharp corner.

[0020] In a possible implementation of the first aspect of the present application, when the swing arm is in a folded position, the first region and the second regions on both sides of the first region together form an arc structure, and along the distribution direction of the door panel and the base, the distance between the axis of the arc structure and the base is a first distance. The swing arm includes a sliding portion and a supporting portion, the sliding portion is slidably connected to the door panel, a first arc-shaped supporting surface is formed on the supporting portion, a step surface is formed at the junction of the supporting portion and the sliding portion, the step surface faces the sliding portion, the edge where the first arc-shaped supporting surface meets the step surface is the second edge, the distance between the second edge and the base is the second distance, and the second distance is greater than or equal to the first distance. Under this structure, the first arc-shaped supporting surface can cover part of the third region, thereby being able to support the junction of the third region and the second region, and there will be a risk of excessive local stress.

[0021] In the second aspect, a folding screen terminal is provided, including a first shell, a second shell, a folding screen and a hinge mechanism as described in the above technical solution, wherein the first part is arranged on the first shell, the second part is arranged on the second shell, and the third part is opposite to the hinge mechanism.

[0022] The folding screen terminal provided in the second aspect of the present application, because it includes the hinge mechanism described in the above technical solution, can solve the same technical problems and achieve the same technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a structural diagram of a foldable screen terminal provided in an embodiment of the present application;

[0024] FIG2 is a front view of a foldable screen terminal provided in an embodiment of the present application;

[0025] FIG3 is a front view of a folding screen terminal in a folded state provided by an embodiment of the present application;

[0026] FIG4 is a front view of another folding screen terminal in a folded state provided by an embodiment of the present application;

[0027] FIG5 is a structural diagram of a rotating shaft mechanism provided in an embodiment of the present application;

[0028] FIG6 is an exploded view of a rotating shaft mechanism provided in an embodiment of the present application;

[0029] FIG7 is a cross-sectional view taken along line AA of the rotating shaft mechanism provided in FIG5 in the expanded position;

[0030] FIG8 is a cross-sectional view of the rotating shaft mechanism provided in FIG5 in a folded position;

[0031] FIG9 is a cross-sectional view of the auxiliary swing arm of the rotating shaft mechanism provided in FIG8;

[0032] FIG10 is a structural diagram of another rotating shaft mechanism provided in an embodiment of the present application;

[0033] FIG11 is a cross-sectional view of the swing arm of the rotating shaft mechanism provided in FIG10;

[0034] FIG12 is a cross-sectional view of the rotating shaft mechanism provided in FIG10 in the expanded position;

[0035] FIG13 is a cross-sectional view of the shaft mechanism provided in FIG10 in a folded position;

[0036] FIG14 is a schematic diagram of the relative positions of the swing arm, base, and door panel of the rotating shaft mechanism provided in an embodiment of the present application;

[0037] FIG15 is a diagram showing the effect of a drop simulation test of the rotating shaft mechanism provided in FIG8 ;

[0038] FIG16 is a diagram showing the effect of a drop simulation test of the rotating shaft mechanism provided in FIG13;

[0039] FIG17 is a schematic diagram of the relative positions of the main swing arm, the auxiliary swing arm, and the base provided in an embodiment of the present application;

[0040] FIG18 is another schematic diagram of the relative positions of the main swing arm, the auxiliary swing arm, and the base provided in an embodiment of the present application.

[0041] Reference numerals: 01 - foldable screen terminal; 10 - foldable screen; 11 - first part; 12 - second part; 13 - third part; 13c - third area; 13b - second area; 13a - first area; 20 - supporting device; 21 - first housing; 21a - first fitting surface; 22 - second housing; 22a - second fitting surface; 23 - rotating shaft mechanism; 23a - third fitting surface; 100 - base; 101 - arc-shaped groove; 102 - second rotating shaft; 110 - second arc-shaped supporting surface; 120 - supporting plane; 200 - swing arm; 210-first arc-shaped supporting surface; 211-first edge; 212-second edge; 213-sliding portion; 214-support portion; 215-rotating portion; 216-step surface; 220-main swing arm; 221-arc-shaped slider; 222-first axial hole; 230-auxiliary swing arm; 230a-first auxiliary swing arm; 230b-second auxiliary swing arm; 231-second axial hole; 300-door panel; 400-axle cover; 500-connecting block; 510-slide groove; 600-damping assembly; 610-cam bracket; 620-spring; 30-auxiliary screen. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0043] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0044] In addition, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0045] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0046] The present application provides a foldable screen terminal, which can be a type of electronic device with a foldable screen. The present application is described using a mobile phone as an example of a foldable screen terminal.

[0047] Specifically, please refer to Figures 1 and 2. Figure 1 is a structural diagram of a folding screen terminal 01 provided in an embodiment of the present application, and Figure 2 is a main view of a folding screen terminal 01 provided in an embodiment of the present application. The folding screen terminal 01 may include a folding screen 10 and a supporting device 20. The folding screen 10 is supported and attached to the supporting device 20, and the supporting device 20 can drive the folding screen 10 to rotate between the unfolded state and the folded state. It can be understood that Figures 1 and 2 only schematically illustrate some components of the folding screen terminal 01, and the actual shape, actual size, actual position and actual structure of these components are not limited by the structures shown in Figures 1 and 2.

[0048] To facilitate the description of the following embodiments, an XYZ coordinate system is established, defining the width direction of the foldable screen terminal 01 as the X-axis direction, the length direction of the foldable screen terminal 01 as the Y-axis direction, and the thickness direction of the foldable screen terminal 01 as the Z-axis direction when the foldable screen terminal 01 is in the unfolded state or the folded state. It should be noted that the XYZ coordinate system can be flexibly transformed according to actual needs. The embodiments of this application only provide one possible example and should not be considered to constitute a special limitation of this application.

[0049] The above-mentioned folding screen 10 is used to display images, videos, etc. The folding screen 10 may include a first part 11, a second part 12 and a third part 13, and the third part 13 is arranged between the first part 11 and the second part 12. When the folding screen terminal 01 is in a folded state, the third part 13 of the folding screen 10 is bent, and the first part 11 and the second part 12 are arranged relative to each other. At least the third part 13 of the folding screen 10 adopts a flexible screen. The first part 11 and the second part 12 of the folding screen 10 can adopt a flexible screen, or a non-flexible screen, or partially adopt a flexible screen and partially adopt a non-flexible screen. Therefore, this application does not make specific limitations on this.

[0050] Among them, the above-mentioned folding screen 10 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0051] The above-mentioned supporting device 20 is used to support the folding screen 10. The supporting device 20 may include a first shell 21, a second shell 22 and a hinge mechanism 23, and the hinge mechanism 23 is connected between the first shell 21 and the second shell 22. The first shell 21 has a first fitting surface 21a, and the first part 11 of the folding screen 10 is fitted on the first fitting surface 21a. The second shell 22 has a second fitting surface 22a, and the second part 12 of the folding screen 10 is fitted on the second fitting surface 22a. The hinge mechanism 23 has a third fitting surface 23a, and the third part 13 of the folding screen 10 is fitted on the third fitting surface 23a. The first shell 21 and the second shell 22 are rotatably connected by a rotating mechanism, so that the folding screen terminal 01 can rotate between the above-mentioned unfolded state and folded state.

[0052] When the folding screen terminal 01 is in the unfolded state, please continue to refer to Figures 1 and 2. Figures 1 and 2 show the structural diagrams of the folding screen terminal 01 when it is in the unfolded state. At this time, the first fitting surface 21a, the second fitting surface 22a and the third fitting surface 23a are in the same plane, so that the folding screen 10 can be fully unfolded, that is, the first part 11, the second part 12 and the third part 13 of the folding screen 10 are in the same plane, and the flatness of the folding screen 10 can be ensured. In this state, the large-screen display of the folding screen terminal 01 can be achieved, which can bring a better user experience to the user. For example, when the user watches a movie, he can use a large screen to watch it, which is conducive to improving the viewing experience.

[0053] When the folding screen terminal 01 is in a folded state, please refer to Figure 3, which is a main view of a folding screen terminal 01 in a folded state provided by an embodiment of the present application. At this time, the first part 11 and the second part 12 of the folding screen terminal 01 are opposite to each other, the third part 13 is bent, and the supporting device 20 is protected outside the folding screen 10, that is, the folding screen 10 is between the first shell 21 and the second shell 22 of the supporting device 20. In this state, the folding screen 10 is invisible to the user to prevent the folding screen 10 from being scratched or damaged, thereby effectively protecting the folding screen 10. For example, when the mobile phone is not needed, the folding screen terminal 01 can be folded and placed to avoid damage to the screen.

[0054] In some embodiments, please refer to Figure 4, which is a main view of another folding screen terminal 01 provided in an embodiment of the present application in a folded state. The folding screen terminal 01 may also include a sub-screen 30 (also referred to as an external screen), which is arranged on the side of the first shell 21 away from the folding screen 10, or on the side of the second shell 22 away from the folding screen 10. When the folding screen terminal 01 is in a folded state, the sub-screen 30 can be used to display images so that the user can perform one-handed operation, thereby making the use scenario of the folding screen terminal 01 more diversified. For example, when a user takes public transportation, one hand needs to hold the handrail. At this time, the sub-screen 30 can be used for display and one-handed operation, which is conducive to further improving the user experience.

[0055] On this basis, please refer to Figures 5, 6 and 7. Figure 5 is a structural diagram of a rotating shaft mechanism 23 provided in an embodiment of the present application, Figure 6 is an exploded diagram of the rotating shaft mechanism 23 provided in Figure 5, and Figure 7 is an AA cross-sectional view of the rotating shaft mechanism 23 provided in Figure 5 in the expanded position, and Figure 7 shows a folding screen 10 (that is, the third part 13 of the folding screen 10).

[0056] The hinge mechanism 23 may include a base 100, a swing arm 200, a door panel 300, and a shaft cover 400. The swing arm 200 and the door panel 300 are provided on both sides of the base 100 along the length direction (i.e., the Y-axis direction). The base 100 is provided inside the shaft cover 400, and the shaft cover 400 is provided between the first shell 21 and the second shell 22. When the foldable screen terminal 01 is in the folded state, the shaft cover 400 can be exposed, that is, the shaft cover 400 is an external component.

[0057] The first end of the swing arm 200 is rotatably connected to the base 100, and the swing arms 200 on both sides of the base 100 rotate in opposite directions. The rotation axis of the swing arm 200 is parallel to the Y-axis direction. The second end of the swing arm 200 is slidably connected to the door panel 300. For example, the rotation axis of the swing arm 200 relative to the base 100 can be perpendicular to the sliding direction of the swing arm 200 relative to the door panel 300.

[0058] In addition, the door panels 300 located on both sides of the base 100 are respectively used to be fixedly connected to the first shell 21 and the second shell 22 shown in Figures 1 and 2 above. The swing arm 200 can drive the door panel 300 to rotate between the unfolded position and the folded position, so that the folding screen terminal 01 can rotate between the above-mentioned unfolded state and folded state.

[0059] In some embodiments, please continue to refer to Figures 5, 6 and 7. The above-mentioned swing arm 200 can be directly slidably connected to the door panel 300, or it can indirectly achieve relative sliding with the door panel 300. For example, the hinge mechanism 23 can also include a connecting block 500, which is connected to the door panel 300. The second end of the swing arm 200 is slidably connected to the connecting block 500, so that when the swing arm 200 rotates, it can drive the connecting block 500 and the door panel 300 to rotate together. At the same time, it can drive the first shell 21 and the second shell 22 to rotate, so that the folding screen terminal 01 can rotate between the unfolded state and the folded state.

[0060] Alternatively, while the swing arm 200 is slidingly connected to the connecting block 500, the swing arm 200 and the door panel 300 can also be slidingly connected, that is, while the swing arm 200 and the connecting block 500 slide relative to each other, the swing arm 200 and the door panel 300 can also slide relative to each other.

[0061] It should be noted that the connection method between the door panel 300 and the connecting block 500 is not unique. For example, the door panel 300 and the connecting block 500 can be fixedly connected, that is, they move synchronously; or the door panel 300 and the connecting block 500 can also be rotatably connected, that is, the door panel 300 and the connecting block 500 rotate with the swing arm 200, and relative movement can also occur between the door panel 300 and the connecting block 500. In other words, the connection method between the door panel 300 and the connecting block 500 can be flexibly set according to actual needs, and therefore, this application does not impose any special restrictions on this.

[0062] In other embodiments, referring to Figures 5, 6, and 7, the hinge mechanism 23 provided in the embodiments of the present application may include multiple swing arms 200. That is, multiple swing arms 200 may be provided between the base 100 and the door panel 300, and the multiple swing arms 200 are spaced apart along the Y-axis. The multiple swing arms 200 may include a main swing arm 220 and a secondary swing arm 230, and the swing arm 200 shown in Figure 7 is the secondary swing arm 230.

[0063] Furthermore, while the door panel 300 is rotationally connected to the connecting block 500, the door panel 300 can also be slidably connected to at least one of the main swing arm 220 and the auxiliary swing arm 230. In other words, at least one of the main swing arm 220 and the auxiliary swing arm 230 can slide relative to the door panel 300 and the connecting block 500. Therefore, this application does not impose any particular limitation on this aspect.

[0064] The two ends of the main swing arm 220 can be rotatably connected to the base 100 and the connecting block 500, respectively. For example, the main swing arm 220 and the base 100 can be connected by an arcuate groove 101 and an arcuate slider 221. The arcuate slider 221 is rotatably disposed in the arcuate groove 101, so that the main swing arm 220 can rotate relative to the base 100.

[0065] In addition, the main swing arm 220 and the above-mentioned connecting block 500 are connected by a first rotating shaft (not shown in the figure) and a first axial hole 222, that is, a first axial hole 222 is opened on the main swing arm 220, and the first axial hole 222 cooperates with the first rotating shaft on the connecting block 500 to realize the rotational connection between the main swing arm 220 and the connecting block 500.

[0066] The auxiliary swing arm 230 has a first end that is rotatably connected to the base 100, and a second end that is slidably connected to the connecting block 500. For example, the auxiliary swing arm 230 and the base 100 may also be rotatably connected by the second rotating shaft 102 cooperating with the second shaft hole 231. That is, the auxiliary swing arm 230 is provided with the second shaft hole 231, and the base 100 is provided with the second rotating shaft 102. The second rotating shaft 102 passes through the second shaft hole 231 to achieve the rotational connection between the auxiliary swing arm 230 and the base 100.

[0067] In addition, the second end of the auxiliary swing arm 230 is inserted into the sliding groove 510 on the connecting block 500, thereby realizing the sliding connection between the auxiliary swing arm 230 and the connecting block 500.

[0068] In addition, the above-mentioned rotating shaft mechanism 23 may also include a damping assembly 600. During the rotation of the above-mentioned door panel 300 relative to the base 100, the damping assembly 600 is used to provide a damping force, thereby enhancing the user's hand feel during use and improving the user experience. For example, the damping assembly 600 is disposed on the auxiliary swing arm 230 and may include a cam bracket 610 (the cam bracket 610 has a first cam surface) mounted on the second rotating shaft 102 and a spring 620. The second cam surface is correspondingly disposed on the first end of the auxiliary swing arm 230. During the rotation of the auxiliary swing arm 230, the second cam surface on the auxiliary swing arm 230 rotates relative to the first cam surface on the cam bracket 610, causing the cam bracket 610 to move along the axial direction of the rotating shaft (i.e., the Y-axis direction), thereby compressing the spring 620 and generating a damping force.

[0069] In this regard, please refer to Figures 8 and 9. Figure 8 is a cross-sectional view of the hinge mechanism 23 shown in Figure 5 in the folded position, and Figure 9 is a cross-sectional view of the auxiliary swing arm 230 of the hinge mechanism 23 shown in Figure 8. When the foldable screen terminal 01 is in the folded state, if it falls and collides with another object, the foldable screen terminal 01 will be subjected to an impact force. Since the auxiliary swing arm 230 is slidably connected to the connecting block 500, this impact force can cause the connecting block 500 to slide relative to the shaft cover 400 and toward the shaft cover 400.

[0070] Since the connecting block 500 is fixedly connected to the first shell 21 and the second shell 22, the first part 11 and the second part 12 of the folding screen 10 are fixedly connected to the first shell 21 and the second shell 22 respectively. Therefore, the folding screen 10 will move toward the direction close to the shaft cover 400. At this time, the third part 13 of the folding screen 10 will abut against the auxiliary swing arm 230, causing the third part 13 of the folding screen 10 to deform.

[0071] In some embodiments, please continue to refer to Figures 8 and 9. Since the surface of the auxiliary swing arm 230 facing the third portion 13 of the folding screen 10 is flat, when the third portion 13 of the folding screen 10 and the surface of the auxiliary swing arm 230 abut each other, the third portion 13 will be squeezed from its original curved surface structure to a flat structure that fits the surface of the auxiliary swing arm 230, that is, a local area of ​​the third portion 13 will undergo significant deformation. At this time, the area of ​​the third portion 13 that abuts the surface of the auxiliary swing arm 230 and the adjacent area will bend at a large angle, resulting in greater stress at this location. Therefore, it is easy to cause a sharp corner or a dead bend at this location, which in turn causes damage to the folding screen 10.

[0072] To solve the above problems, please refer to Figures 10 and 11. Figure 10 is a structural diagram of another rotating shaft mechanism 23 provided in an embodiment of the present application, and Figure 11 is a cross-sectional view of the swing arm 200 of the rotating shaft mechanism 23 provided in Figure 10. The rotating shaft mechanism 23 can be applied to the above-mentioned folding screen terminal 01. Among them, the swing arm 200 shown in Figures 10 and 11 is the above-mentioned auxiliary swing arm 230, that is, the swing arm 200 is slidably connected to the connecting block 500. In the following embodiments, the swing arm 200 is taken as the above-mentioned auxiliary swing arm 230 as an example for description.

[0073] The above-mentioned rotating shaft mechanism 23 can include the above-mentioned base 100, door panel 300, connecting block 500 and swing arm 200. Door panel 300, connecting block 500 and swing arm 200 are provided on both sides of the base 100 along the Y-axis direction. The first end of the swing arm 200 is rotatably connected to the base 100, and the second end of the swing arm 200 is slidably connected to the connecting block 500, and the connecting block 500 is connected to the door panel 300.

[0074] The swing arm 200 has a first curved support surface 210 formed on it. The first curved support surface 210 is a concave curved surface structure. The axis of the first curved support surface 210 is parallel to the rotation axis of the swing arm 200, that is, the axis of the first curved support surface 210 is arranged along the Y-axis. When the swing arm 200 is in the folded position, the first curved support surface 210 is opposite to the partially bent area of ​​the third portion 13 of the folding screen 10.

[0075] It is understood that when the swing arm 200 is in the folded position, the first curved support surface 210 and the partially bent area of ​​the third portion 13 of the folding screen 10 are opposite to each other, which means that the first curved support surface 210 and the partially bent area of ​​the third portion 13 of the folding screen 10 are in contact with each other; alternatively, there may be a gap between the first curved support surface 210 and the partially bent area of ​​the third portion of the folding screen 10. Therefore, this application does not impose any special restrictions on this.

[0076] Furthermore, when the first curved support surface 210 and the partially bent area of ​​the third portion 13 of the folding screen 10 are in contact with each other, the folding screen 10 can be directly in contact with the first curved support surface 210. Alternatively, another support structure (e.g., a bamboo book structure, not shown) can be provided between the folding screen 10 and the first curved support surface 210. In this case, the support structure is in contact with the first curved support surface 210, and the folding screen 10 is located on the side of the support structure away from the first curved support surface 210.

[0077] Specifically, please refer to Figure 12, which is a cross-sectional view of the hinge mechanism 23 shown in Figure 10 in the unfolded position. Figure 12 also illustrates the third portion 13 of the foldable screen 10. The third portion 13 of the foldable screen 10 may include a first region 13a, a second region 13b, and a third region 13c (separated by dashed lines in Figure 12). When the foldable screen terminal 01 is in the unfolded state, along the X-axis, the first region 13a is flanked by a second region 13b, and the second region 13b is flanked by a third region 13c on the side away from the first region 13a. One of the two third regions 13c is adjacent to the first portion 11 of the foldable screen 10, and the other of the two third regions 13c is adjacent to the second portion 12 of the foldable screen 10. In other words, along the X-axis, the foldable screen 10 sequentially comprises the first portion 11, the third region 13c, the second region 13b, the first region 13a, the second region 13b, the third region 13c, and the second portion 12.

[0078] Among them, the above-mentioned first area 13a is opposite to the base 100, the two third areas 13c are respectively opposite to the door panels 300 on both sides of the base 100, the part between the third area 13c and the first area 13a is the second area 13b, and the second area 13b is arranged opposite to a partial area of ​​the swing arm 200.

[0079] When the foldable screen terminal 01 is in the folded state, the first area 13a and the second area 13b are in a bent state. That is, the first area 13a and the second area 13b form the bent area of ​​the third portion 13 of the foldable screen 10, and the first curved support surface 210 is opposite the second area 13b of the third portion 13. Please refer to Figure 13, which is a cross-sectional view of the hinge mechanism 23 shown in Figure 10 in the folded position. That is, when the foldable screen terminal 01 is in the folded state and is dropped, the first curved support surface 210 provides support for the bent second area 13b.

[0080] In this way, when the foldable screen terminal 01 falls in its folded state, since the first curved support surface 210 is a curved surface, when the foldable screen 10 is bent, at least part of its third portion 13 also forms a curved structure. For example, at least the first region 13a and the two second regions 13b of the third portion 13 can form a curved structure. Therefore, when the second region 13b of the third portion 13 of the foldable screen 10 abuts the first curved support surface 210, the second region 13b fits the first curved support surface 210, and the second region 13b can still maintain its curved surface structure, thereby preventing the second region 13b from being squeezed into a flat surface. In other words, the deformation of the second region 13b is reduced, thereby reducing the stress in the local area of ​​the foldable screen 10, which helps reduce the risk of sharp corners or dead bends.

[0081] Among them, the curvature of the above-mentioned first arc-shaped support surface 210 is a first curvature (the arc center angle α shown in Figure 11, that is, the angle between the two radii R), the first curvature is greater than or equal to 30°, and the first curvature is less than or equal to 90°. For example, the first curvature can be 35°, 40°, 45°, 50°, 60°, 75° or 80°, etc.

[0082] Moreover, the radius of the first arc-shaped support surface 210 is a first radius (radius R shown in FIG11 ), the first radius is greater than or equal to 2 mm, and the first radius is less than or equal to 3.5 mm. For example, the first radius can be 2.3 mm, 2.5 mm, 2.7 mm, 2.9 mm, 3 mm, 3.2 mm, etc.

[0083] In some embodiments, when swing arm 200 is in the folded position, that is, when foldable screen terminal 01 is in the folded state, second area 13b of foldable screen 10 is bent, and the curvature of second area 13b is a second curvature, and the radius of second area 13b is a second radius. The size of the second curvature can be adapted to the first curvature, and the size of the second radius can be adapted to the first radius. In this structure, the curvature and radius of first curved support surface 210 and second area 13b are similar, which helps further reduce the deformation of second area 13b after being impacted and abutting against second curved support surface 110, that is, helps further reduce the stress in the local area of ​​foldable screen 10.

[0084] For example, the first curvature can be equal to the second curvature, and the first radius can be equal to the second radius. That is, along the cross section perpendicular to the Y-direction (XZ plane), the arc formed by the first curved support surface 210 and the arc formed by the second area 13b can overlap with each other. In this way, when the second area 13b and the first curved support surface 210 abut against each other, the second area 13b and the first curved support surface 210 can be completely fitted together, so that the second area 13b undergoes a smaller deformation, which is beneficial to reducing the stress in the local area of ​​the folding screen 10.

[0085] Alternatively, the ratio of the difference between the first and second curvatures, and the first and second radii, can be less than a certain range. For example, the ratio of the difference between the first and second curvatures, and the ratio of the difference between the first and second radii, are both within 10%. When the second region 13b is in contact with the first curved support surface 210, the second region 13b will not significantly deform, which helps reduce stress in a local area of ​​the folding screen 10.

[0086] It should be noted that the ratio of the difference between the first and second curvatures, and the first and second radii can be flexibly set according to actual needs. For example, the ratio of the difference can be within 5%, 6%, 7%, 8%, 9%, 13% or 15%.

[0087] Furthermore, the ratio of the difference between the first and second curvatures, and the ratio of the difference between the first and second radii, can be the same or different. For example, the ratio of the difference between the first and second curvatures can be 5%, while the ratio of the difference between the first and second radii can be 10%. Alternatively, the first and second curvatures can be equal, while the ratio of the difference between the first and second radii can be 8%. Therefore, this application does not impose any particular limitation on this.

[0088] Furthermore, there is no unique method for calculating the ratio of the difference. For example, if two parameters are A and B, and A>B, dividing the difference between the two by A indicates that B is proportionally smaller than A. Alternatively, dividing the difference between the two by B indicates that A is proportionally larger than B. Therefore, this application does not impose any specific restrictions on the method for calculating the ratio of the difference between two parameters.

[0089] Please continue to refer to Figure 13. When the folding screen terminal 01 falls, the folding screen 10 will move toward the direction close to the shaft cover 400. Therefore, in order to further reduce the stress after the folding screen 10 is deformed. When the folding screen terminal 01 is in a folded state, there may be a first gap between the second area 13b of the folding screen 10 and the first curved support surface 210. In this way, when the folding screen terminal 01 is impacted, the folding screen 10 needs to move a certain distance before it can abut against the first curved support surface 210 of the swing arm 200. Therefore, after the swing arm 200 and the second area 13b of the folding screen 10 abut against each other, it is beneficial to further reduce the deformation of the second area 13b.

[0090] Exemplarily, the gap between the second area 13b and the first arc-shaped support surface 210 is a first gap D1, and the distance of the first gap D1 is greater than or equal to 0.1 mm and less than or equal to 0.5 mm. For example, the first gap can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.

[0091] Moreover, as can be seen from the above, there may be a phase difference between the first curvature and the second curvature, and between the first radius and the second radius, that is, in the cross section perpendicular to the Y-axis direction (XZ plane), the arc formed by the first arc-shaped support surface 210 and the arc formed by the second area 13b cannot completely overlap.

[0092] That is, the size of the first gap D1 may be different at different positions. In some possible examples, along the width direction of the folding screen terminal (i.e., along the X-axis direction), the gap between the edge of the first curved support surface 210 close to the door panel 300 and the folding screen 10 may be the position of the minimum value of the first gap, and the gap between the edge of the first curved support surface 210 close to the base 100 and the folding screen 10 may be the position of the maximum value of the first gap. It is understandable that, affected by the actual process accuracy, the specific positions corresponding to the maximum and minimum values ​​of the above-mentioned first gap may be located at other positions and are not limited to the positions of the above-mentioned examples. Therefore, the embodiments of the present application do not make special limitations on this.

[0093] Furthermore, the ratio of the minimum to maximum values ​​of the first gap D1 at different positions provided by the embodiment of the present application is greater than or equal to 70%. That is, when the foldable screen terminal 01 is in the folded state, the maximum gap and the minimum gap between the first curved support surface 210 and the second area 13b are relatively small. This helps ensure that the second area 13b of the foldable screen 10 only undergoes minor deformation when it abuts the first curved support surface 210, thereby further reducing the risk of the foldable screen 10 experiencing a partial dead fold or sharp corner due to significant deformation.

[0094] For example, the ratio of the minimum to maximum value of the first gap D1 can be 80%. In this case, when the maximum value of the first gap D1 is 0.2 mm, the minimum value of the first gap D1 is 0.16 mm. Alternatively, when the maximum value of the first gap D1 is 0.3 mm, the minimum value of the first gap D1 is 0.24 mm. Furthermore, the ratio of the minimum to maximum value of the first gap D1 can also be 75%, 85%, 90%, 92%, 95%, 98%, and so on. Therefore, this embodiment of the present application is not specifically limited to this.

[0095] In some embodiments, the surface of the base 100 provided in the embodiments of the present application that faces the foldable screen 10 (i.e., the first region 13a described above) includes a second curved support surface 110. The axis of the second curved support surface 110 is parallel to the rotation axis of the swing arm 200, i.e., parallel to the Y-axis. When the foldable screen terminal 01 is in the folded state, at least a portion of the first region 13a is in contact with the second curved support surface 110.

[0096] It is understood that when the foldable screen terminal 01 is in the folded state, at least a portion of the first area 13a is opposite to the second curved support surface 110, which means that at least a portion of the first area 13a can be in contact with the second curved support surface 110. Alternatively, there may be a gap between at least a portion of the first area 13a and the second curved support surface.

[0097] Furthermore, when at least a portion of the first region 13a is in contact with the second curved support surface 110, the first region 13a (i.e., the folding screen 10) can be directly in contact with the second curved support surface 110. Alternatively, the aforementioned support structure (i.e., the bamboo book structure) can be disposed between the folding screen 10 and the second curved support surface 110, with the support structure in contact with the second curved support surface 110. Therefore, this application does not impose any particular limitation on this.

[0098] In this way, the second curved support surface 110 can provide support for the first area 13a of the folding screen 10, which is beneficial to mitigate the impact of the folding screen terminal 01 on the folding screen 10 when it falls, thereby further reducing the risk of large deformation of the folding screen 10.

[0099] In some embodiments, the curvature and radius of the second curved support surface 110 are consistent with the curvature and radius of the first area 13a of the folding screen 10 when it is bent. The specific correspondence between the second curved support surface 110 and the first area 13a is the same as that between the first curved support surface 210 and the second area 13b, so they are not described repeatedly.

[0100] In addition, please continue to refer to Figure 13. The surface of the base 100 facing the folding screen 10 also includes a support plane 120. The support plane 120 is arranged on both sides of the second arc-shaped support surface 110 along the distribution direction of the two swing arms 200, that is, there are two support planes 120, and they are distributed along the X-axis direction. When the swing arm 200 is in the unfolded position (as shown in Figure 12), that is, the folding screen terminal 01 is in the unfolded state, at least part of the first area 13a is opposite to the two support planes 120. Under this structure, the support plane 120 of the base 100 can support the folding screen 10 in the unfolded state, which is conducive to ensuring the flatness of the folding screen 10.

[0101] It is understood that at least a portion of the first region 13a may be in contact with the support plane 120, or a gap may exist between them. Furthermore, in the case of contact, the first region 13a may be directly in contact with the support plane 120, or the support structure provided on the foldable screen 10 may be directly in contact with the support plane 120. Therefore, this application does not impose any specific limitations on this.

[0102] On this basis, in order to ensure that the foldable screen terminal 01 does not block the movement of the foldable screen 10 toward the shaft cover 400 in the event of a fall, referring to FIG13 , a second gap D2 is provided between a portion of the base 100 and the shaft cover 400 provided in the embodiment of the present application, and the first gap D1 is less than or equal to the second gap D2.

[0103] In this way, when the folding screen terminal 01 is in a folded state and falls, causing the folding screen 10 to move, since there is a second gap D2 between the local area of ​​the base 100 and the shaft cover 400, when the folding screen terminal 01 is subjected to the impact force of the fall, causing the base 100 and the shaft cover 400 to be deformed, the second gap D2 between the local area of ​​the base 100 and the shaft cover 400 can form a deformation space, so that the local area of ​​the base 100 and the shaft cover move relative to each other, thereby reducing the probability of the external force on the base 100 and the shaft cover 400 being transmitted to the folding screen 10, so as to further reduce the risk of the folding screen 10 undergoing a large deformation, which is conducive to further reducing the risk of the folding screen 10 being damaged.

[0104] For example, when the first gap D1 is smaller than the second gap D2, when the folding screen terminal 01 falls and is impacted, the folding screen 10 moves toward the direction close to the shaft cover 400. At the same time, relative movement occurs between the base 100 and the shaft cover 400. Since the second gap D2 is larger than the first gap D1, the risk of the folding screen 10 not contacting the first curved support surface 210 while the shaft cover 400 contacts the base 100 can be reduced.

[0105] In this way, while the shaft cover 400 and the base 100 are in relative motion, it is ensured that the second area 13b of the folding screen 10 can fit into the first curved support surface 210, so that the first curved support surface 210 can effectively support the second area 13b of the folding screen 10, thereby reducing the probability of the external force applied to the shaft cover 400 and the base 100 being transmitted to the folding screen 10, and thus better alleviating the impact force of the fall, which is conducive to further reducing the risk of damage to the folding screen 10.

[0106] Among them, when the values ​​of the first gap D1 at different positions between the above-mentioned first curved support surface 210 and the second area 13b are different, the minimum value of the above-mentioned second gap D2 can be greater than or equal to the maximum value of the first gap D1, so as to prevent the first curved support surface 210 from not being able to fully fit with the second area 13b of the folding screen 10, thereby ensuring the supporting effect of the first curved support surface 210 on the second area 13b of the folding screen 10.

[0107] In addition, when the folding screen terminal 01 is in a folded state, along the distribution direction of the above-mentioned door panel 300 and the base 100, that is, along the width direction of the folding screen terminal 01 (the above-mentioned X-axis direction), the edge of the first arc-shaped support surface 210 close to the base 100 is the first edge 211, and the edge close to the door panel 300 is the second edge 212.

[0108] Specifically, referring back to Figure 11 , the swing arm 200 may include a sliding portion 213, a supporting portion 214, and a rotating portion 215. The sliding portion 213 is inserted into the sliding groove of the connecting block 500 to achieve a sliding connection between the swing arm 200 and the connecting block 500. The rotating portion 215 is provided with the second axial hole 231 to achieve a rotational connection between the swing arm 200 and the base 100. The supporting portion 214 is located between the sliding portion 213 and the rotating portion 215, and the first arcuate supporting surface 210 is formed on the supporting portion 214.

[0109] The first edge 211 is formed at the junction of the support portion 214 and the rotating portion 215, and a stepped surface 216 is formed at the junction of the support portion 214 and the sliding portion 213. The edge where the stepped surface 216 meets the first arcuate support surface 210 is the second edge 212. As a result, compared to the swing arm 200 shown in FIG. 9 , the support portion 214 of the swing arm 200 provided in this embodiment of the present application has a greater thickness, thereby further improving the support strength of the swing arm 200.

[0110] In some embodiments, please refer to Figure 14, which is a schematic diagram illustrating the relative positions of the swing arm 200 of the hinge mechanism 23, the base 100, and the door panel 300 provided in an embodiment of the present application. When the foldable screen terminal 01 is in the folded state, that is, when the hinge mechanism 23 is in the folded position, the first edge 211 can be located on the plane of the support plane 120 on the base 100. In other words, along the X-axis, the distance between the first edge 211 and the shaft cover 400 can be equal to the distance between the support plane 120 and the shaft cover 400.

[0111] Under this structure, when the folding screen terminal 01 is impacted by falling, the folding screen 10 and the base 100 move toward the direction close to the shaft cover 400. When the second area 13b of the folding screen 10 and the first curved support surface 210 are in contact with each other, the distance between the support plane 120 on the base 100 and the shaft cover 400 will be smaller than the distance between the first edge 211 of the first curved support surface 210 and the shaft cover 400.

[0112] In this way, it is beneficial to ensure a smooth transition between the first edge 211 of the first curved support surface 210 and the edge of the second curved support surface 110, thereby reducing the risk of large deformation of the folding screen 10 in the gap between the swing arm 200 and the base 100, which may cause damage to the folding screen 10.

[0113] For example, the curvature and radius of the first curved support surface 210 (i.e., the first curvature and first radius) can be the same as the curvature and radius of the second curved support surface 110. When the foldable screen terminal 01 falls and is impacted, causing the second area 13b of the foldable screen 10 to abut against the first curved support surface 210, the first area 13a of the foldable screen 10 abuts against the second curved support surface 110. At this time, the first curved support surface 210 and the second curved support surface 110 are located on the same circumference, that is, along a cross section perpendicular to the Y-axis, the arcs formed by the first curved support surface 210 and the second curved support surface 110 are located on the same circle.

[0114] Therefore, when the second part 12 and the third part 13 of the folding screen 10 abut against the first curved support surface 210 and the second curved support surface 110, the folding screen 10 can smoothly transition between the first curved support surface 210 and the second curved support surface 110, that is, the gap between the edge of the first curved support surface 210 (that is, the first edge 211) and the edge of the second curved support surface 110 (that is, the edge connected to the support plane 120) will not cause the folding screen 10 to be significantly deformed, which is beneficial to further reduce the risk of the folding screen 10 having a dead fold or sharp corner at this position.

[0115] In addition, please continue to refer to Figure 14. When the folding screen terminal 01 is in a folded state, the distance between the axis of the arc structure formed by the second area 13b and the first area 13a of the folding screen 10 (the cross-sectional view in the figure is shown with the center of circle A) and the base 100 is a first distance L1, and the distance between the second edge 212 of the first arc-shaped support surface 210 and the base 100 is a second distance L2, and the second distance L2 is greater than or equal to the first distance L1.

[0116] This helps increase the area of ​​the first curved support surface 210, that is, the area of ​​contact between the first curved support surface 210 and the folding screen 10. This further enhances the support effect of the first curved support surface 210 on the second area 13b of the folding screen 10, thereby reducing the risk of damage to the folding screen 10.

[0117] For example, when the second distance L1 is greater than the first distance L1, that is, along the X-axis, the second edge 212 is located on the side of the second area 13b and the first area 13a of the folding screen 10 away from the base 100. When the second area 13b of the folding screen 10 is in contact with the first curved support surface 210, the area of ​​the first curved support surface 210 near the second edge 212 can cover a portion of the third area 13c. Moreover, since the folding screen terminal 01 is in a folded state, the two third areas 13c of the folding screen 10 gradually approach each other in a direction away from the shaft cover 400. Therefore, there is a gap between the second edge 212 of the first curved support surface 210 and the third area 13c, that is, the two do not contact each other.

[0118] In this way, on the one hand, the first curved support surface 210 can effectively support the second area 13b of the foldable screen 10 and can basically cover the entire second area 13b, thereby further reducing the risk of significant deformation of the second area 13b. On the other hand, due to the gap between the second edge 212 of the first curved support surface 210 and the third area 13c, when the foldable screen 10 and the first curved support surface 210 abut each other, they can effectively support the junction of the second area 13b and the third area 13c of the foldable screen 10. In other words, they can form a smooth arc at the junction of the second area 13b and the third area 13c of the foldable screen 10, thereby reducing the risk of forming a sharp corner or a hard fold at this location.

[0119] Please refer to Figures 15 and 16. Figure 15 is a drop simulation test effect diagram of the rotating shaft mechanism 23 provided in Figure 8, and Figure 16 is a drop simulation test effect diagram of the rotating shaft mechanism 23 provided in Figure 13. Among them, Figures 15 and 16 respectively show the stress value (Dynamic Max.value, maximum force) of area B in the figure. According to the simulation test results, the stress of the folding screen 10 provided by the related art (i.e., as shown in Figure 8) at area B is 96.2, and the stress of the folding screen 10 provided by the embodiment of the present application at area B is 77.1.

[0120] As can be seen from this, the stress at the junction of the third region 13c and the second region 13b of the foldable screen 10 shown in Figure 16 is relatively low. This means that the swing arm 200 provided in this embodiment of the present application, through its contoured design, can reduce the stress of the foldable screen 10 by 15% compared to the swing arm 200 provided in the related art. Therefore, the risk of a dead bend or sharp corner forming at the junction of the third region 13c and the second region 13b shown in Figure 16 is reduced.

[0121] Furthermore, as can be seen from Figures 15 and 16 , the junction between the second region 13b and the first region 13a shown in Figure 15 is more severely bent, while the junction between the second region 13b and the first region 13a shown in Figure 16 is more smoothly transitioned. In other words, the junction between the second region 13b and the first region 13a shown in Figure 16 has a lower risk of forming a hard bend or a sharp corner.

[0122] Based on this, the hinge mechanism 23 provided in the embodiment of the present application has a first curved support surface 210 formed on the swing arm 200, that is, the swing arm 200 is designed to imitate the curved structure of the folding screen 10 after being bent. When the folding screen terminal 01 is in the folded state and is dropped or collided, the first curved support surface 210 can effectively support the second area 13b of the folding screen 10, so that the second area 13b of the folding screen 10 undergoes minor deformation, thereby reducing the risk of the third portion 13 of the folding screen 10 being squeezed, resulting in a localized dead fold or sharp corner, thereby helping to reduce the risk of damage to the folding screen 10 due to a drop of the folding screen terminal 01.

[0123] On this basis, please refer to Figure 17, which is a schematic diagram of the relative positions of the main swing arm 220 and the auxiliary swing arm 230 and the base 100 provided in an embodiment of the present application. The swing arm 200 includes the main swing arm 220 and the auxiliary swing arm 230, and the auxiliary swing arm 230 is formed with a first arc-shaped support surface 210. The auxiliary swing arm 230 can be set in the middle position of the folding screen terminal 01 along the Y-axis direction, and the main swing arm 220 is set on both sides of the auxiliary swing arm 230 along the Y-axis direction. Under this structure, since the folding screen terminal 01 is in a folded state, the center of gravity of its overall structure is located at the midpoint along the Y-axis direction. Therefore, the auxiliary swing arm 230 is set at this position. When the folding screen terminal 01 is in a falling scenario, the first arc-shaped support surface 210 on the two auxiliary swing arms 230 on both sides of the base 100 can provide support for the position with the greatest force, that is, it can provide effective support for the position on the third part 13 of the folding screen 10 that is most severely impacted, so as to reduce the risk of dead bends or sharp corners at this position.

[0124] Please refer to Figure 18, which is a schematic diagram illustrating another relative position of the main swing arm 220 and auxiliary swing arm 230 relative to the base 100, according to an embodiment of the present application. In the case where multiple auxiliary swing arms 230 are provided, i.e., multiple auxiliary swing arms 230 are spaced apart along the Y-axis, the first curvature and first radius of the first curved support surface 210 on the multiple auxiliary swing arms 230 can be aligned with the second curvature and second radius of the second area 13b of the folding screen 10 in a manner that gradually decreases along the Y-axis from the midpoint toward both ends.

[0125] For example, when multiple auxiliary swing arms 230 are provided, the central auxiliary swing arm 230 is the first auxiliary swing arm 230a, and the two auxiliary swing arms 230b are the second auxiliary swing arms 230b. In this case, the ratio of the first curvature of the first auxiliary swing arm 230a to the second curvature of the second region 13b, as well as the ratio of the first radius to the second radius, can both be 6%. The ratio of the first curvature of the second auxiliary swing arm 230b to the second curvature of the second region 13b, as well as the ratio of the first radius to the second radius, can both be 10%.

[0126] In this way, on the one hand, since the first auxiliary swing arm 230a is more accurately adapted to the second area 13b of the folding screen 10, it can better support the middle position of the folding screen 10 along the Y-axis direction, thereby effectively supporting the position of the folding screen 10 that is most severely hit.

[0127] On the other hand, reducing the precision with which the second auxiliary swing arm 230b fits the second region 13b of the folding screen 10 can reduce the machining accuracy of the second auxiliary swing arm 230b, thereby helping to reduce costs. Furthermore, the second auxiliary swing arms 230b are located on either side of the first auxiliary swing arm 230a, meaning that the impact force on the second auxiliary swing arms 230b is less than that on the first auxiliary swing arm 230a. Therefore, the second auxiliary swing arms 230b can still provide a good support effect for the second region 13b of the folding screen 10 at the corresponding position.

[0128] It can be understood that the number and distribution of the above-mentioned swing arms 200 (including the main swing arm 220 and the auxiliary swing arm 230) are only possible examples, which can be flexibly changed according to actual needs. Therefore, this application does not make any special restrictions on this.

[0129] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0130] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A rotating shaft mechanism is applied to a folding screen terminal, and the folding screen terminal includes a folding screen, and is characterized in that, The folding screen includes a first part, a second part, and a third part. The third part is located between the first part and the second part, and the third part is used to face the rotating shaft mechanism. The rotating shaft mechanism includes a base, a door panel, and a swing arm. The door panel and the swing arm are provided on both sides of the base. The first end of the swing arm is rotatably connected to the base, and the second end of the swing arm is slidably connected to the door panel. The swing arm has a first arc-shaped support surface formed by a depression. Wherein, the swing arm and the door panel can rotate relative to the base between an unfolded position and a folded position. When the swing arm is in the folded position, the first arc-shaped support surface faces a partial bending area of the third part.

2. The rotating shaft mechanism according to claim 1, characterized in that, The third part at least includes a first area and a second area. The second area is provided on both sides of the first area, and the first area faces the base. When the swing arm is in the folded position, the first area and the second area are in a bent state, and the first arc-shaped support surface faces the second area.

3. The shaft mechanism according to claim 1 or 2, characterized in that, The radian of the first arc-shaped support surface is a first radian. The first radian is greater than or equal to 30° and less than or equal to 90°. The radius of the first arc-shaped support surface is a first radius. The first radius is greater than or equal to 2 mm and less than or equal to 3.5 mm.

4. The rotating shaft mechanism according to any one of claims 1 to 3, characterized in that, When the swing arm is in the folded position, there is a first gap between the bending area of the third part and the first arc-shaped support surface.

5. The shaft mechanism according to claim 4, characterized in that, The ratio of the minimum width to the maximum width of the first gap is greater than or equal to 70%.

6. The shaft mechanism according to claim 4, characterized in that, The width of the first gap is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

7. The rotating shaft mechanism according to any one of claims 1 to 6, characterized in that, The rotating shaft mechanism further includes an axle cap. The base is arranged inside the axle cap. There is a second gap between at least a partial area of the base and the axle cap.

8. The rotating shaft mechanism according to claim 7, wherein When the swing arm is in the folded position, there is a first gap between the first arc-shaped support surface and the second area, and the maximum width of the first gap is less than or equal to the minimum width of the second gap.

9. The shaft mechanism according to any one of claims 1 to 8, characterized in that The surface of the base facing the third part includes a second arc-shaped support surface. The axis of the second arc-shaped support surface is parallel to the rotation axis of the swing arm. When the swing arm is in the folded position, at least a partial area of the third part faces the second arc-shaped support surface.

10. The shaft mechanism according to claim 9, characterized in that, The surface of the base facing the third part further includes a support plane. The support plane is arranged on both sides of the second arc-shaped support surface along the distribution direction of the two door panels. When the swing arm is in the unfolded position, at least a partial area of the third part faces the support plane.

11. The rotating shaft mechanism according to claim 10, characterized in that, When the swing arm is in the folded position, along the distribution direction of the door panel and the base, the edge of the first arc-shaped support surface close to the base side is a first edge, and the first edge is located on the plane where the support plane is located.

12. The rotating shaft mechanism according to any one of claims 2 to 11, characterized in that, When the swing arm is in the folded position, the first region and the second regions on both sides of the first region together form an arc-shaped structure. Along the distribution direction of the door panel and the base, the distance between the axis of the arc-shaped structure and the base is a first distance; The swing arm includes a sliding portion and a supporting portion. The sliding portion is slidably connected to the door panel. The first arc-shaped supporting surface is formed on the supporting portion. A stepped surface is formed at the junction of the supporting portion and the sliding portion. The stepped surface faces the sliding portion. The edge where the first arc-shaped supporting surface is connected to the stepped surface is a second edge. The distance between the second edge and the base is a second distance, and the second distance is greater than or equal to the first distance.

13. A foldable screen terminal, characterized in that, It includes a first housing, a second housing, the folding screen, and the rotating shaft mechanism according to any one of claims 1 to 12. The first part is arranged on the first housing, the second part is arranged on the second housing, and the third part faces the rotating shaft mechanism.

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