A hinge structure

Abstract

The application relates to the technical field of hinges, and specifically discloses a hinge structure, which comprises a support frame, a support plate and a turnover driving assembly, the support frame and the support plate are synchronously bent and arranged, the support frame is provided with a hinge capable of bending at the corresponding bending position, a plurality of movable grooves are uniformly and spacedly arranged on one side of the hinge in the bending direction, the movable grooves are adjusted to the closed state when the hinge is adjusted to the bending state, the support plate is fixedly arranged in the support frame, a plurality of strip-shaped holes are arranged at the corresponding bending position of the support plate, the plurality of strip-shaped holes are uniformly and spacedly arranged in the length direction, and the plurality of strip-shaped holes are staggered in the width direction, and the turnover driving assembly is arranged on the support frame and used for driving the support frame and the support plate to synchronously perform the bending action. The application has the effect of improving the overall flatness and visual effect of the flexible folding screen, thereby meeting the requirements of users for high-quality display and smooth use experience.

Description

Technical Field

[0001] This application relates to the technical field of hinges, and in particular to a hinge structure. Background Technology

[0002] With the continuous development of electronic devices, flexible foldable screen technology has become an important development direction in the display field. The emergence of flexible foldable screens has broken the limitations of traditional screen forms, bringing more usage scenarios and possibilities to electronic devices. It enables devices such as mobile phones and computers to achieve a better balance between portability and large-screen display, meeting users' needs for diverse user experiences. With the continuous advancement of technology, more and more manufacturers have begun to invest in the research and development and production of flexible foldable screens, and various products equipped with flexible foldable screens have gradually appeared on the market, attracting widespread attention in the consumer electronics market.

[0003] In addressing the issues related to flexible foldable screens, in addition to improving the materials used in the flexible screen, more emphasis is placed on optimizing the hinge design. Existing hinge structures cause bulges and unevenness at the folding point when the flexible foldable screen is bent, affecting the overall flatness and visual effect of the screen and failing to meet users' requirements for high-quality display and smooth user experience. This problem urgently needs to be improved. Utility Model Content

[0004] In order to improve the overall flatness and visual effect of flexible foldable screens, thereby meeting users' requirements for high-quality display and smooth user experience, this application provides a hinge structure.

[0005] This application provides a hinge structure, which adopts the following technical solution: A hinge structure includes a support frame, a support plate, and a flip-drive assembly. The support frame and the support plate are configured to bend synchronously. The support frame is configured as a bendable hinge at the bending position. The hinge has a plurality of movable slots evenly spaced on its side facing the bending direction. When the hinge is adjusted to a bent state, the movable slots are adjusted to a closed state. The support plate is fixedly disposed inside the support frame. The support plate has a plurality of strip holes at the bending position. The strip holes are evenly spaced along their length and staggered along their width. The flip-drive assembly is disposed on the support frame and is used to drive the support frame and the support plate to bend synchronously.

[0006] By adopting the above technical solution, the support frame supports the support plate and the flip drive assembly. When the flip drive assembly drives the support frame and the support plate to bend synchronously, the hinge on the support frame and the slotted holes on the support plate ensure stable support while facilitating the folding action of the flexible folding screen, which is beneficial to improving the folding quality of the flexible folding screen. When the flexible folding screen is folded, the hinge is adjusted towards the bending state, and the movable slot is adjusted towards the closed state. The length of the surface on the hinge near the flexible folding screen remains unchanged, so that the screen length does not change during the bending process. This is beneficial to improving the overall flatness and visual effect of the flexible folding screen, thereby meeting the requirements for high-quality display and smooth user experience.

[0007] Preferably, the flipping drive assembly includes a hinged moving rod, a moving seat, and a drive member. The moving seat is slidably connected to the support frame. One end of the hinged moving rod is hinged to the end of the support frame located on one side of the hinge, and the other end of the hinged moving rod is hinged to the moving seat. The drive member is located on the support frame on the other side of the hinge and is used to drive the moving seat to reciprocate along the length direction of the support frame. The moving position of the moving seat is also located on the support frame on the other side of the hinge.

[0008] By adopting the above technical solution, the driving component drives the movable seat to reciprocate along the length of the support frame. When the movable seat moves away from the hinged moving rod, the movable seat pulls the hinged moving rod, causing the hinged moving rod to drive the support frame and support plate to move in a bending direction. When the movable seat moves closer to the hinged moving rod, the movable seat pushes the hinged moving rod, causing the hinged moving rod to drive the support frame and support plate to move in a flattening direction.

[0009] Preferably, the driving component includes a rack, a gear, and a drive motor. The rack is fixedly connected to the movable seat, the gear meshes with the rack, and the drive motor is mounted on the support frame to drive the gear to rotate.

[0010] By adopting the above technical solution, the drive motor drives the gear to rotate, the gear rotation drives the rack to move, thereby moving the movable seat fixed on the rack.

[0011] Preferably, the support frame is provided with limiting plates along the length of the rack and on both sides of the rack, and the two limiting plates form a channel for the rack to move.

[0012] By adopting the above technical solution, the two limiting plates form a channel for the rack to move, which helps to improve the stability of the rack during movement, thereby improving the stability of the support frame and support plate during operation.

[0013] Preferably, the rotating end of the support frame is designated as a free end, and the non-rotating end of the support frame is designated as a fixed end. The free end of the support frame is provided with an arc-shaped plate. The support frame is provided with a first limiting member for limiting the rotation of the support plate to a flat state and a second limiting member for limiting the rotation of the support plate to a folded state. When the support frame rotates to a flat state, the arc-shaped plate and the first limiting member form a snap-fit ​​limiting. When the support frame rotates to a folded state, the arc-shaped plate and the second limiting member form a snap-fit ​​limiting.

[0014] By adopting the above technical solution, the arc-shaped plate moves with the rotation of the free end of the support frame. When the support frame rotates to the flat state, the arc-shaped plate and the first limiting member form a snap-fit ​​limit, so that the flexible folding screen is stable in the flat state. When the support frame rotates to the folded and stored state, the arc-shaped plate and the second limiting member form a snap-fit ​​limit, so that the flexible folding screen is stable in the folded state, which helps to improve the stability of the flexible folding screen in both the flat and folded states.

[0015] Preferably, one end of the arc-shaped plate is fixedly connected to the free end of the support frame, and the other end of the arc-shaped plate is provided with a snap-fit ​​block. The first limiting member is set as a first limiting block, which is perpendicular to the fixed end of the support frame and is located on the moving path of the snap-fit ​​block. When the support frame rotates to a flat state, the snap-fit ​​block is perpendicular to the fixed end of the support frame and abuts against the first limiting block.

[0016] By adopting the above technical solution, the first limiting block is perpendicular to the fixed end of the support frame and is located on the moving path of the snap-fit ​​block. When the support frame rotates to a flat state, the snap-fit ​​block rotates to a state perpendicular to the fixed end of the support frame and abuts against the first limiting block. The first limiting block limits the snap-fit ​​block, so that the flexible folding screen is stable in a flat state.

[0017] Preferably, the second limiting member is configured as a second limiting block, the second limiting block is perpendicular to the first limiting block, the second limiting block is located on the moving path of the snap-fit ​​block, and the space between the first limiting block and the second limiting block is the moving space of the snap-fit ​​block. When the support frame is rotated to the folded state, the snap-fit ​​block is parallel to the fixed end of the support frame, and the snap-fit ​​block abuts against the second limiting block.

[0018] By adopting the above technical solution, the locking block moves in the space between the first limiting block and the second limiting block. The second limiting block is perpendicular to the first limiting block. When the support frame rotates 90° to the folded state, the locking block rotates to the state parallel to the fixed end of the support frame, and the locking block abuts against the second limiting block. The second limiting block limits the locking block, so that the flexible folding screen is stable in the 90° folded state.

[0019] Preferably, a spring piece is provided on one side of the hinge with a movable groove. One end of the spring piece is fixedly connected to the fixed end of the support frame, and the other end of the spring piece extends toward the free end of the support frame. The end of the spring piece extending toward the free end of the support frame is set as the movable end. Both sides of the movable end of the spring piece extend outward to form protrusions. The support frame is provided with a corresponding limiting groove for the movement of the protrusions. When the support frame is rotated to the folded state, the protrusions abut against the groove wall at one end of the limiting groove. When the support frame is rotated to the flat state, the protrusions abut against the groove wall at the other end of the limiting groove.

[0020] By adopting the above technical solution, the spring has a smooth curved surface when bent, which is beneficial to improving the arc quality of the flexible folding screen when it is folded, and further improving the overall flatness and visual effect of the flexible folding screen. At the same time, when the support frame is in the folded or flat state, the cooperation between the limiting groove and the protrusion can limit the spring, making it difficult for the spring to slide out of the limiting groove. This is beneficial to improving the stability of the spring and the flexible folding screen in the flat state and the 90° bending state. Moreover, the flexible folding screen will not tilt upward or collapse downward, thereby further improving the flatness of the flexible folding screen.

[0021] Preferably, a support block is provided on the surface of the hinged moving rod facing the support frame, and when the support frame rotates to a flat state, the support block abuts against the hinge on the support frame.

[0022] By adopting the above technical solution, when the support frame rotates to a flat state, the support block abuts against the hinge position on the support frame to provide flat support for the hinge position of the support frame, the opening position of the support plate, and the folding position of the flexible folding screen. This helps to improve the flatness of the flexible folding screen in a flat state, thereby improving the display effect.

[0023] Preferably, the driving component includes a screw and a drive motor. The screw is rotatably connected to the support frame and threaded through the movable seat. The drive motor is fixedly mounted on the support frame to drive the screw to rotate.

[0024] By adopting the above technical solution, the drive motor drives the screw to rotate, and the rotation of the screw drives the moving seat to move.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a support frame, a support plate, and a flip drive assembly, with the support frame equipped with a hinge and a movable slot on the side of the hinge facing the bending direction, and the support plate having a strip hole, when the flip drive assembly drives the support frame and support plate to bend synchronously, the hinge on the support frame and the strip hole on the support plate ensure stable support while facilitating the folding action of the flexible folding screen, which is beneficial to improving the folding quality of the flexible folding screen. When the flexible folding screen is folded, the hinge adjusts towards the bending state, and the movable slot adjusts towards the closed state. At this time, the surface length of the hinge on the side closest to the flexible folding screen remains unchanged, so that the screen length does not change during the bending process, which is beneficial to improving the overall flatness and visual effect of the flexible folding screen, thereby meeting the requirements for high-quality display and smooth user experience.

[0026] 2. By setting a hinged moving rod, a moving seat, and a driving component, the driving component drives the moving seat to reciprocate along the length of the support frame. When the moving seat moves away from the hinged moving rod, the moving seat pulls the hinged moving rod, causing the hinged moving rod to drive the support frame and support plate to move in a bending direction. When the moving seat moves closer to the hinged moving rod, the moving seat pushes the hinged moving rod, causing the hinged moving rod to drive the support frame and support plate to move in a flattening direction.

[0027] 3. By setting up a rack, gears, and a drive motor, the drive motor drives the gears to rotate, and the rotation of the gears drives the rack to move, thereby moving the movable seat fixed on the rack. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the flexible folding screen in the flat state in Embodiment 1 of this application.

[0029] Figure 2 This is a schematic diagram of the flexible folding screen in the folded state in Embodiment 1 of this application.

[0030] Figure 3 This is an exploded view of the flexible folding screen in Embodiment 1 of this application when it is in a flat state.

[0031] Figure 4 This is a structural schematic diagram from another perspective when the flexible folding screen in Embodiment 1 of this application is in a flat state.

[0032] Figure 5 This is a schematic diagram of the hinge structure when the flexible folding screen is in a flat state in Embodiment 1 of this application.

[0033] Figure 6This is a schematic diagram of the hinge structure when the flexible folding screen is in a folded state in Embodiment 1 of this application.

[0034] Figure 7 This is a schematic diagram of the structure of the flip drive component in Embodiment 1 of this application.

[0035] Figure 8 This is a schematic diagram of the structure of the first limiting block and the second limiting block in Embodiment 1 of this application.

[0036] Figure 9 This is a schematic diagram of the drive component in Embodiment 2 of this application.

[0037] Explanation of reference numerals in the attached figures: 1. Support frame; 2. Support plate; 3. Tilting drive assembly; 31. Hinge moving rod; 32. Moving seat; 33. Drive component; 331. Rack; 332. Gear; 333. Drive motor; 334. Screw; 335. Drive motor; 4. Hinge; 5. Movable slot; 6. Strip hole; 7. Limiting plate; 8. Arc plate; 9. Snap-fit ​​block; 10. First limiting block; 11. Second limiting block; 12. Spring piece; 13. Protrusion; 14. Limiting groove; 15. Support block. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0039] Example 1: Embodiment 1 of this application discloses a hinge structure, referring to... Figures 1-4 It includes a support frame 1, a support plate 2, and a flipping drive assembly 3. The support plate 2 and the support frame 1 are configured to bend synchronously. The support frame 1 is configured with a hinge 4 that can be bent at the corresponding bending position. (Refer to...) Figure 5 and Figure 6 The hinge 4 has several evenly spaced movable slots 5 on the side facing the bending direction. In this embodiment, the vertical cross-section of the movable slots 5 is set as an isosceles triangle. When the hinge 4 is adjusted to a bent state, the movable slots 5 are adjusted to a closed state. The support plate 2 is fixedly installed inside the support frame 1. The support plate 2 has several strip holes 6 corresponding to the bending position. The strip holes 6 are evenly spaced in their length direction and staggered in their width direction, so that the support plate 2 can bend with the folding of the support frame 1 and ensure the support function for the flexible folding screen. The flip drive assembly 3 is installed on the support frame 1 to drive the support frame 1 and the support plate 2 to perform bending actions synchronously. It should be noted that the flip drive assembly 3 drives the flexible folding screen to fold by driving the support frame 1 to flip at one end of the hinge 4.

[0040] Reference Figure 1 and Figure 2The part of the support frame 1 that does not rotate at one end of the hinge 4 is designated as the fixed end, and the part of the support frame 1 that rotates at the other end of the hinge 4 is designated as the free end. The free end rotates relative to the fixed end through the hinge 4.

[0041] Reference Figure 4 The flipping drive assembly 3 includes a hinged moving rod 31, a moving seat 32, and a drive member 33. The moving seat 32 is slidably connected to the support frame 1. One end of the hinged moving rod 31 is hinged to the free end of the support frame 1, and the other end of the hinged moving rod 31 is hinged to the moving seat 32. When the support frame 1 is in a flat state, the hinge height between the hinged moving rod 31 and the moving seat 32 is greater than the hinge height between the hinged moving rod 31 and the free end of the support frame 1. In this embodiment, the cross-section of the support frame 1 is rectangular. The drive member 33 is located at the fixed end of the support frame 1 to drive the moving seat 32 to reciprocate along the length direction of the support frame 1. It should be noted that the moving position of the moving seat 32 is also located at the free end of the support frame 1.

[0042] Reference Figure 4 and Figure 7 The driving component 33 includes a rack 331, a gear 332, and a drive motor 333. The rack 331 is arranged along the length direction of the support frame 1 and fixedly connected to the movable seat 32. The gear 332 meshes with the rack 331. The drive motor 333 is fixedly mounted on the support frame 1 to drive the gear 332 to rotate. Through the meshing relationship between the gear 332 and the rack 331, the rack 331 is driven to move along the length direction of the support frame 1, thereby realizing the reciprocating movement of the movable seat 32 along the length direction of the support frame 1. When the movable seat 32 moves away from the hinged moving rod 31, the movable seat 32 pulls the hinged moving rod 31, causing the hinged moving rod 31 to drive the flexible folding screen to move in a folding direction through the free end of the support frame 1. When the movable seat 32 moves closer to the hinged moving rod 31, the movable seat 32 pushes the hinged moving rod 31, causing the hinged moving rod 31 to drive the flexible folding screen to move in a flattening direction through the free end of the support frame 1.

[0043] Reference Figure 4 and Figure 7 The support frame 1 is provided with limit plates 7 along the length of the rack 331 and on both sides of the rack 331. The two limit plates 7 form a channel for the rack 331 to move. The rack 331 moves in the channel to improve the stability of the rack 331 when it moves, which is beneficial to improving the stability of the flexible folding screen when it moves.

[0044] Reference Figure 3 and Figure 4The support frame 1 has two arc-shaped plates 8 on its free ends, arranged symmetrically. The support frame 1 has a first limiting member for limiting the rotation of the support plate 2 to a flat state and a second limiting member for limiting the rotation of the support plate 2 to a folded state. When the support frame 1 rotates to a flat state, the arc-shaped plate 8 engages with the first limiting member; when the support frame 1 rotates to a folded state, the arc-shaped plate 8 engages with the second limiting member, thus improving the stability of the flexible folding screen in both flat and folded states. (See further details...) Figure 8 One end of the arc plate 8 is fixedly connected to the free end of the support frame 1, and the other end of the arc plate 8 is provided with a snap-fit ​​block 9. The first limiting member is set as a first limiting block 10. The first limiting block 10 is perpendicular to the fixed end of the support frame 1 and is located on the moving path of the snap-fit ​​block 9. When the support frame 1 rotates to a flat state, the snap-fit ​​block 9 is perpendicular to the fixed end of the support frame 1 and abuts against the first limiting block 10. The first limiting block 10 blocks the snap-fit ​​block 9 so that the flexible folding screen is stably stopped in the flat state. The second limiting member is set as the second limiting block 11, which is perpendicular to the first limiting block 10. The second limiting block 11 is located on the moving path of the latching block 9. The space between the first limiting block 10 and the second limiting block 11 is the moving space of the latching block 9. When the support frame 1 rotates 90° from the flat state to the folded state, the latching block 9 is parallel to the fixed end of the support frame 1 and abuts against the second limiting block 11. The second limiting block 11 blocks the latching block 9 so that the flexible folding screen is stably stopped in the folded and stored state.

[0045] Reference Figure 7 and Figure 8 A support block 15 is provided on the surface of the hinge moving rod 31 facing the support frame 1. When the support frame 1 rotates to the flat state, the support block 15 abuts against the hinge 4 on the support frame 1 to provide flat support for the hinge 4 of the support frame 1, the opening position of the support plate 2, and the folding position of the flexible folding screen. This helps to improve the flatness of the flexible folding screen in the flat state, thereby improving the display effect. When the support frame 1 needs to rotate from the flat state to the folding state, the support block 15 moves away from the hinge 4 on the support frame 1 with the movement of the hinge moving rod 31, so as not to interfere with the bending movement of the hinge 4.

[0046] Reference Figure 4 and Figure 8The hinge 4 structure has a spring piece 12 on one side with a movable groove 5. One end of the spring piece 12 is fixedly connected to the fixed end of the support frame 1, and the other end of the spring piece 12 extends toward the free end of the support frame 1. The end of the spring piece 12 extending toward the free end of the support frame 1 is set as the movable end. The two sides of the movable end of the spring piece 12 extend outward to form a protrusion 13. The support frame 1 has a corresponding limiting groove 14 for the protrusion 13 to move. When the support frame 1 is rotated to the folded state, the protrusion 13 abuts against the groove wall at one end of the limiting groove 14. When the support frame 1 is rotated to the flat state, the protrusion 13 abuts against the groove wall at the other end of the limiting groove 14. It should be noted that the spring piece 12 has a smooth curved surface when bent, which helps to improve the arc quality of the screen when it is folded, and further improves the overall flatness and visual effect of the flexible folding screen. At the same time, when the support frame 1 is in a folded or flat state, the cooperation between the limiting groove 14 and the protrusion 13 can limit the spring piece 12, making it difficult for the spring piece 12 to slide out of the limiting groove 14. This helps to improve the stability of the spring piece 12 and the flexible folding screen in a flat state and a 90° bent state, and the flexible folding screen will not tilt upward or collapse downward, thereby further improving the flatness of the flexible folding screen.

[0047] The implementation principle of the hinge structure in this application embodiment is as follows: When the flip drive assembly 3 drives the support frame 1 to perform a bending action, the setting of the hinge 4 on the support frame 1 and the setting of the strip hole 6 on the support plate 2 ensures stable support for the flexible folding screen while facilitating the folding action of the flexible folding screen, which is beneficial to improving the folding quality of the flexible folding screen. During the bending process of the support frame 1, the hinge 4 is adjusted towards the bending state, and at this time the movable groove 5 is adjusted towards the closed state. The surface length of the hinge 4 on the side close to the flexible folding screen remains unchanged, so that the screen length of the flexible folding screen does not change during the bending process, which is beneficial to improving the overall flatness and visual effect of the flexible folding screen, thereby meeting the requirements for high-quality display and smooth user experience.

[0048] Example 2: Reference Figure 9The difference from Embodiment 1 is that in Embodiment 2, the driving component 33 includes a screw 334 and a driving motor 335. The screw 334 is rotatably connected to the support frame 1 and threaded through the movable seat 32. The driving motor 335 is fixedly mounted on the support frame 1 to drive the screw 334 to rotate. As the driving motor 335 drives the screw 334 to rotate, the movable seat 32 moves along the length direction of the screw 334. When the movable seat 32 moves away from the hinged moving rod 31, the movable seat 32 pulls the hinged moving rod 31, causing the hinged moving rod 31 to drive the flexible folding screen to move in a bending direction through the free end of the support frame 1. When the movable seat 32 moves closer to the hinged moving rod 31, the movable seat 32 pushes the hinged moving rod 31, causing the hinged moving rod 31 to drive the flexible folding screen to move in a flattening direction through the free end of the support frame 1. It is worth mentioning that, in this embodiment, the hinged moving rod 31 can be replaced by a spring to improve the buffering and shock absorption effect when the state changes.

[0049] The implementation principle of the hinge structure in Embodiment 2 of this application is roughly the same as that in Embodiment 1, and will not be repeated here.

[0050] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hinge structure, characterized in that: The system includes a support frame (1), a support plate (2), and a flipping drive assembly (3). The support frame (1) and the support plate (2) are bent synchronously. The support frame (1) is configured with a hinge (4) that can be bent at the bending position. The hinge (4) has several movable slots (5) evenly spaced on the side facing the bending direction. When the hinge (4) is adjusted to the bending state, the movable slots (5) are adjusted to the closed state. The support plate (2) is fixedly installed inside the support frame (1). The support plate (2) has several strip holes (6) at the bending position. The strip holes (6) are evenly spaced in the length direction and staggered in the width direction. The flipping drive assembly (3) is installed on the support frame (1) to drive the support frame (1) and the support plate (2) to bend synchronously.

2. The hinge structure according to claim 1, characterized in that: The flipping drive assembly (3) includes a hinged moving rod (31), a moving seat (32), and a drive member (33). The moving seat (32) is slidably connected to the support frame (1). One end of the hinged moving rod (31) is hinged to the end of the support frame (1) located on one side of the hinge (4), and the other end of the hinged moving rod (31) is hinged to the moving seat (32). The drive member (33) is located on the other side of the support frame (1) on the hinge (4) and is used to drive the moving seat (32) to reciprocate along the length direction of the support frame (1). The moving position of the moving seat (32) is also located on the other side of the hinge (4) on the support frame (1).

3. A hinge structure according to claim 2, characterized in that: The driving component (33) includes a rack (331), a gear (332) and a drive motor (333). The rack (331) is fixedly connected to the movable seat (32), the gear (332) meshes with the rack (331), and the drive motor (333) is mounted on the support frame (1) to drive the gear (332) to rotate.

4. A hinge structure according to claim 3, characterized in that: The support frame (1) is provided with limiting plates (7) along the length direction of the rack (331) and on both sides of the rack (331), and the two limiting plates (7) form a channel for the rack (331) to move.

5. A hinge structure according to claim 1, characterized in that: One rotating end of the support frame (1) is set as a free end, and the non-rotating end of the support frame (1) is set as a fixed end. An arc-shaped plate (8) is provided on the free end of the support frame (1). A first limiting member for limiting the rotation of the support plate (2) to a flat state and a second limiting member for limiting the rotation of the support plate (2) to a folded state are provided on the support frame (1). When the support frame (1) rotates to a flat state, the arc-shaped plate (8) and the first limiting member form a snap-fit ​​limiting. When the support frame (1) rotates to a folded state, the arc-shaped plate (8) and the second limiting member form a snap-fit ​​limiting.

6. A hinge structure according to claim 5, characterized in that: One end of the arc plate (8) is fixedly connected to the free end of the support frame (1), and the other end of the arc plate (8) is provided with a snap-fit ​​block (9). The first limiting member is set as a first limiting block (10). The first limiting block (10) is perpendicular to the fixed end of the support frame (1), and the first limiting block (10) is located on the moving path of the snap-fit ​​block (9). When the support frame (1) rotates to a flat state, the snap-fit ​​block (9) is perpendicular to the fixed end of the support frame (1), and the snap-fit ​​block (9) abuts against the first limiting block (10).

7. A hinge structure according to claim 6, characterized in that: The second limiting member is set as a second limiting block (11), the second limiting block (11) is perpendicular to the first limiting block (10), the second limiting block (11) is located on the moving path of the snap-fit ​​block (9), and the space between the first limiting block (10) and the second limiting block (11) is the moving space of the snap-fit ​​block (9). When the support frame (1) is rotated to the folded state, the snap-fit ​​block (9) is parallel to the fixed end of the support frame (1), and the snap-fit ​​block (9) abuts against the second limiting block (11).

8. A hinge structure according to claim 1, characterized in that: A spring piece (12) is provided on one side of the hinge (4) with a movable groove (5). One end of the spring piece (12) is fixedly connected to the fixed end of the support frame (1). The other end of the spring piece (12) extends toward the free end of the support frame (1). The end of the spring piece (12) extending toward the free end of the support frame (1) is set as the movable end. The two sides of the movable end of the spring piece (12) extend outward to form a protrusion (13). The support frame (1) is provided with a limiting groove (14) for the protrusion (13) to move. When the support frame (1) is rotated to the folded state, the protrusion (13) abuts against the groove wall at one end of the limiting groove (14). When the support frame (1) is rotated to the flat state, the protrusion (13) abuts against the groove wall at the other end of the limiting groove (14).

9. A hinge structure according to claim 2, characterized in that: The hinged moving rod (31) has a support block (15) on its surface facing the support frame (1). When the support frame (1) rotates to a flat state, the support block (15) abuts against the hinge (4) on the support frame (1).

10. A hinge structure according to claim 2, characterized in that: The driving component (33) includes a screw (334) and a drive motor (335). The screw (334) is rotatably connected to the support frame (1) and threaded through the movable seat (32). The drive motor (335) is fixedly mounted on the support frame (1) to drive the screw (334) to rotate.

Images