A flexible hinge device

Abstract

The application relates to the hinge field and discloses a flexible hinge device which comprises a fixing frame, a hinge body, a linear driving piece, a first elastic sheet and an abutting piece. The fixing frame is internally provided with a containing cavity, the hinge body is located in the fixing frame and connected with the fixing frame, the hinge body is provided with an extension part along a second direction, one end of the first elastic sheet is in transmission connection with the linear driving piece, the linear driving piece can drive the first elastic sheet to move along a first direction, the other end of the first elastic sheet is connected with the extension part, and the abutting piece is connected with the first elastic sheet. When the hinge body rotates, the radial force generated by the extension part is first subjected to elastic deformation of the first elastic sheet to absorb part of the radial force, the remaining radial force is transmitted to the abutting piece through the first elastic sheet and transmitted to the fixing frame through the abutting piece to be offset, so that the radial force acting on the output end of the linear driving piece is reduced, and vibration and torque fluctuation of the output end of the linear driving piece are avoided.

Description

Technical Field

[0001] This application relates to the field of hinges, and more particularly to a flexible hinge device. Background Technology

[0002] Rotary flexible hinges achieve precision motion through the elastic deformation of the material itself, offering significant advantages such as frictionless operation, zero backlash, and high resolution. Therefore, they are widely used in high-end equipment such as precision positioning and optical adjustment. In practical applications, flexible hinges typically require a linear motor for power. However, the rotating part of the flexible hinge and the linear drive motor are often rigidly connected. When the linear drive motor moves the drive end of the rotary flexible hinge, the hinge's rotational offset exerts a radial force on the output end of the linear drive motor, causing harmful disturbances such as high-frequency vibration and torque fluctuations. Because the elastic deformation zone of the flexible hinge is very thin, it is extremely sensitive to additional stress and assembly errors. These harmful forces act directly on the weak points of the hinge through the rigid connection, causing unexpected additional elastic deformation. This leads to a significant decrease in motion accuracy and may accelerate fatigue failure in the stress concentration areas of the hinge, ultimately affecting the stability and service life of the entire system. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a flexible hinge device.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides: A flexible hinge device having a first direction and a second direction perpendicular to each other, comprising: A fixing frame, wherein the fixing frame has a receiving cavity, and the receiving cavity has a clearance groove on its inner wall along the first direction to communicate with the outside of the fixing frame; A hinge body, the hinge body being located within and connected to the fixing frame, the hinge body having an extension portion along the second direction, and the extension portion being located within the receiving cavity; A linear drive unit, which is fixedly mounted on the fixed frame; A first spring is located in the accommodating cavity and extends along the first direction. One end of the first spring is connected to the linear drive member, which can drive the first spring to move along the first direction. The other end of the first spring is connected to the extension. An abutment member, one end of which is connected to the fixing frame along the second direction, and the other end of which is connected to the first spring piece.

[0005] Furthermore, a first connecting block is provided at one end of the first spring sheet that is away from the extension along the first direction, and the first connecting block is connected to the linear drive member for transmission.

[0006] Furthermore, the abutting member is a guide rail, which is connected to the inner wall of the accommodating cavity along the second direction, and the guide rail is slidably engaged with the first connecting block along the first direction.

[0007] Furthermore, the abutment includes a second spring sheet and a second connecting block. One end of the second spring sheet along the second direction is connected to the first spring sheet, and the other end of the second spring sheet away from the first spring sheet is connected to the second connecting block. The second connecting block is connected to the inner wall of the accommodating cavity along the second direction.

[0008] Furthermore, the first spring, the first connecting block, the second spring, and the second connecting block are integrally formed and connected.

[0009] Furthermore, the flexible hinge device also includes a transmission block and a connecting bolt. The transmission block is fixedly disposed at the end of the extension that is away from the hinge body. The surface of the transmission block away from the extension is provided with a plurality of positioning protrusions and at least one connecting hole. The first spring sheet is provided with a plurality of through holes and at least one second through hole along the second direction. The positioning protrusions pass through the first through holes, and the connecting bolt passes through the second through hole to the connecting hole and connects with the transmission block.

[0010] This application also provides a flexible hinge device having a first direction and a second direction that are perpendicular to each other, including: A fixing frame, wherein the fixing frame has a receiving cavity, and the receiving cavity has a clearance groove on its inner wall along the first direction to communicate with the outside of the fixing frame; A hinge body is located inside and connected to the fixed frame. The hinge body has an extension portion along the second direction, and the extension portion is partially located inside the receiving cavity. A transmission block is connected to the end of the extension portion away from the hinge body. A linear drive unit, which is fixedly mounted on the fixed frame; A ball joint is connected to the linear drive component, which can drive the ball joint to move along the first direction. The end of the ball joint away from the linear drive component is slidably engaged with the transmission block.

[0011] Furthermore, the ball head includes a shaft and a ball head body. The shaft is connected to the linear drive component, and the ball head body is fixedly disposed at the end of the shaft away from the linear drive component. The ball head body is slidably engaged with the transmission block.

[0012] Furthermore, the flexible hinge device also includes an elastic element, one end of which abuts against the transmission block along the first direction, and the other end of which abuts against the transmission block against the surface of the accommodating cavity opposite to the linear drive element.

[0013] Furthermore, the transmission block has a positioning hole on its surface away from the ball joint along the first direction, and the elastic element is located in the positioning hole. The accommodating cavity has a limiting groove on its surface away from the linear drive member along the first direction, and the elastic element is located in the limiting groove.

[0014] This application provides a first spring plate connecting the linear drive member and the extension of the hinge body, and a stop member connecting the fixing frame and the first spring plate. When the hinge body rotates, the radial force generated by the extension is first absorbed by the elastic deformation of the first spring plate. The remaining radial force is transmitted through the first spring plate to the stop member and then to the fixing frame to be offset. This reduces the radial force acting on the output end of the linear drive member, avoids vibration and torque fluctuation at the output end of the linear drive member, prevents the hinge body from generating unexpected additional elastic deformation, improves motion accuracy, slows down fatigue failure of the hinge body, and enhances system stability and service life.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view schematic diagram of the sliding fit between the first connecting block and the abutment in this application; Figure 2 A schematic diagram of the fixing frame and linear drive component under explosive conditions is shown. Figure 3 This diagram shows the linear drive component, the first spring, the first connecting block, and the guide rail in their assembled state. Figure 4 This paper shows a schematic diagram of the linear drive component, the first spring, the first connecting block, and the guide rail under an exploded state. Figure 5This is a front view schematic diagram of the flexible hinge device with the first and second springs engaged in this application; Figure 6 This paper shows a cross-sectional schematic diagram of the flexible hinge device with the first and second springs engaged. Figure 7 This diagram shows the first spring, the second spring, and the linear drive component in their mating state. Figure 8 This paper shows a schematic diagram of the first and second spring fragments and the linear drive component under explosive conditions. Figure 9 This paper shows a schematic diagram of the assembled state of the fixing frame, hinge body, ball joint, and linear drive component of this application; Figure 10 This diagram shows the linear drive component, ball joint, and transmission block of this application in their assembled state. Figure 11 The diagram shows a cross-sectional view of the linear drive component, ball joint, and transmission block of this application.

[0018] Explanation of key component symbols: 100-Fixed frame; 101-Accommodation cavity; 1011-Allowing groove; 102-Limiting groove; 200-Hinge body; 210-Extension; 211-Transmission block; 2110-Positioning hole; 2111-Positioning protrusion; 2112-Connecting hole; 300-Linear drive component; 400-First spring; 401-First through hole; 402-Second through hole; 410-First connecting block; 420-Connecting bolt; 500-Abutment component; 510-Second spring; 520-Second connecting block; 600-Ball head rod; 610-Rod body; 620-Ball head body; 700-Elastic component; Z-First direction; X-Second direction. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] This application provides a flexible hinge device having a first direction Z and a second direction X that are perpendicular to each other. Specifically, the flexible hinge device includes a fixing frame 100, a hinge body 200, a linear drive member 300, a first spring piece 400, and an abutment member 500.

[0025] See Figure 1As shown, the fixing frame 100 has a receiving cavity 101. The receiving cavity 101 has a relief groove 1011 on its inner wall along the first direction Z to communicate with the outside of the fixing frame 100. The hinge body 200 is located inside the fixing frame 100 and connected to the fixing frame 100. The hinge body 200 has an extension 210 along the second direction X, and the extension 210 is partially located inside the receiving cavity 101. The linear drive member 300 is fixedly mounted on the fixing frame 100. The first spring piece 400 is located inside the receiving cavity 101 and extends along the first direction Z. One end of the first spring piece 400 is connected to the linear drive member 300. The linear drive member 300 can drive the first spring piece 400 to move along the first direction Z. The other end of the first spring piece 400 is connected to the extension 210. One end of the abutment member 500 along the second direction X is connected to the fixing frame 100, and the other end of the abutment member 500 is connected to the first spring piece 400.

[0026] In this embodiment, the hinge body 200 is a rotary flexible hinge, and the hinge body 200 is connected to the fixed frame 100. If the extension 210 of the hinge body 200 is rigidly driven by the linear drive member 300, when the hinge body 200 needs to rotate and deflect, an external force needs to be applied to the extension 210 through the linear drive member 300, so that the hinge body 200 rotates. It can be understood that while the hinge body 200 rotates, the hinge body 200 will give a radial force to the power output end of the linear drive member 300 through the extension 210, which will cause a radial offset at the output end of the linear drive member 300. Therefore, the output end of the linear drive member 300 will not move in the first direction Z, resulting in misalignment with the hinge body 200. This may cause the output end of the linear drive member 300 to vibrate, thus affecting the hinge body 200 and consequently affecting the use of high-end equipment such as optical adjustment and precision positioning.

[0027] In this embodiment, the first direction Z is the moving direction of the linear drive member 300, and the second direction X mentioned above is the radial direction of the hinge body 200 perpendicular to the first direction Z, as detailed below. Figure 1 As shown, the linear drive unit 300 is a linear drive motor. In practice, the linear drive unit 300 can also be other devices that can achieve driving, and no specific limitation is made here.

[0028] like Figure 1As shown, to reduce the offset of the output end of the linear drive 300 when the hinge body 200 rotates, a first spring 400 is connected to the output end of the linear drive 300. The other end of the first spring 400 is connected to the extension 210. In this case, the linear drive 300 can transmit the force moving in the first direction Z to the extension 210 through the first spring 400, thereby causing the hinge body 200 and the extension 210 to rotate at a certain angle. It can be understood that because the hinge body 200 and the extension 210 rotate, the extension 210 will transmit radial force to the first spring 400. The radial force is absorbed by deformation to reduce the radial offset of the linear drive 300. In order to eliminate the radial force or keep the radial force within a set range, the first spring 400 is connected to the abutment 500 along the second direction X, and the abutment 500 is connected to the side wall of the accommodating cavity 101 along the second direction X. At this time, the radial force transmitted to the first spring 400 will be transmitted to the abutment 500 and then to the fixing frame 100, thereby canceling the radial force from the extension 210, so that the radial force finally acting on the output end of the linear drive 300 is within the set safe range, ensuring the accuracy of high-end equipment such as optical adjustment and precision positioning.

[0029] In this embodiment, the first spring sheet 400 is sheet-shaped and has a certain elasticity, so that it can deform to a certain extent when receiving radial force from the extension 210, thereby reducing the force transmitted to the output end of the linear drive 300.

[0030] In some embodiments, the first spring sheet 400 is provided with a first connecting block 410 at one end of the extension 210 along the first direction Z, and the first connecting block 410 is connected to the linear drive member 300 in a transmission connection.

[0031] See Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, in order to ensure the stability of power transmission between the first spring 400 and the linear drive 300, a first connecting block 410 is provided between the power output end of the linear drive 300 and the first spring 400. The first connecting block 410 is detachably connected to the power output end of the linear drive 300, and the first connecting block 410 is fixedly connected to the first spring 400.

[0032] For example, the first connecting block 410 is connected to the power output end of the linear drive 300 by at least two bolts to ensure the stability of the connection.

[0033] In some embodiments, the abutment 500 is a guide rail, which is connected to the inner wall of the accommodating cavity 101 along the second direction X, and the guide rail is slidably engaged with the first connecting block 410 along the first direction Z.

[0034] See Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the difference between this embodiment and the above embodiment is that the second spring sheet 510 and the second connecting block 520 are omitted in this embodiment, and the first spring sheet 400 and the first connecting block 410 are integrally formed.

[0035] Specifically, the abutment 500 is a guide rail, and the guide rail is fixedly installed on the inner side wall of the clearance groove 1011. The first connecting block 410 slides with the abutment 500. Specifically, a groove can be opened on the side wall of the first connecting block 410. The groove cooperates with the guide rail to move along the first direction Z. It can be understood that when the radial force from the extension 210 acts on the first spring 400, the force will be absorbed by the abutment 500 when it is transmitted to the first connecting block 410, thereby preventing the force from being transmitted to the output end of the linear drive 300. At this time, the radial force and angular offset generated by the rotation of the hinge body 200 and the extension 210 are offset and absorbed by the deformation of the first spring 400, the cooperation of the first connecting block 410 and the guide rail, so that the output end of the linear drive 300 can only move along the first direction Z and will not deviate along the second direction X. The first connecting block 410 and the guide rail limit its movement, ensuring the unidirectionality of the transmission.

[0036] In another embodiment, the abutment member 500 includes a second spring piece 510 and a second connecting block 520. One end of the second spring piece 510 along the second direction X is connected to the first spring piece 400, and the other end of the second spring piece 510 away from the first spring piece 400 is connected to the second connecting block 520. The second connecting block 520 is connected to the inner wall of the accommodating cavity 101 along the second direction X.

[0037] See Figure 5 , Figure 6 , Figure 7 as well as Figure 8 As shown, the second spring 510 is sheet-shaped and can deform under force. One end of the second spring 510 is connected to the first spring 400 and abuts against the extension 210. The other end of the second connecting block 520 is connected to the second connecting block 520 fixed on the inner side wall of the accommodating cavity 101. When the extension 210 rotates at a certain angle with the hinge body 200, the radial displacement and angular tilt generated by the extension 210 will directly act on the first spring 400 and the second spring 510. The second spring 510 will deform due to the offset and generate radial force to counteract the radial force and angular tilt from the extension 210, so as to reduce the force acting on the output end of the linear drive 300 and make the final force acting on the output end of the linear drive 300 within the set range.

[0038] For example, the second connecting block 520 can be fixed to the fixing frame 100 by bolts to ensure the stability of the connection between the second connecting block 520 and the fixing frame 100.

[0039] In some embodiments, the first spring 400, the first connecting block 410, the second spring 510, and the second connecting block 520 are integrally formed and connected.

[0040] See Figure 7 and Figure 8 As shown, in this embodiment, the first spring sheet 400, the first connecting block 410, the second spring sheet 510, and the second connecting block 520 are integrally formed, thereby ensuring the connection strength between the first spring sheet 400 and the second spring sheet 510, the connection strength between the first spring sheet 400 and the first connecting block 410, and the connection strength between the second spring sheet 510 and the second connecting block 520. This prevents the connection between the first spring sheet 400 and the second spring sheet 510 from breaking under repeated alternating load deformation, and also prevents the connection between the first spring sheet 400 and the first connecting block 410 and the second spring sheet 510 and the second connecting block 520 from breaking.

[0041] For example, the first spring 400, the first connecting block 410, the second spring 510 and the second connecting block 520 can be processed from a single piece of material on a machine tool by subtraction. In practice, other processing methods can also be used, which are not limited here.

[0042] In some embodiments, the flexible hinge device further includes a transmission block 211 and a connecting bolt 420. The transmission block 211 is fixedly disposed at the end of the extension 210 away from the hinge body 200. The surface of the transmission block 211 away from the extension 210 is provided with a plurality of positioning protrusions 2111 and at least one connecting hole 2112. The first spring plate 400 is provided with a plurality of through holes 401 and at least one second through hole 402 along the second direction X. The positioning protrusions 2111 pass through the first through holes 401, and the connecting bolt 420 passes through the second through hole 402 to the connecting hole 2112 and connects with the transmission block 211.

[0043] See Figure 3 and Figure 4As shown, in this embodiment, the transmission block 211 is connected to the first spring piece 400, thereby transmitting the linear driving force from the linear drive member 300 to the extension 210, thus realizing the rotational offset of the hinge body 200. Furthermore, in order to ensure a stable connection between the first spring piece 400 and the transmission block 211, multiple positioning protrusions 2111 and at least one connecting hole 2112 are provided on the end face of the transmission block 211. Correspondingly, a first through hole 401 corresponding to the positioning protrusion 2111 and a first through hole 401 corresponding to the connecting hole 2112 are provided on the first spring piece 400. The second through hole 402, and the positioning protrusion 2111 located in the first through hole 401 to position the first spring piece 400. It can be understood that after multiple positioning protrusions 2111 extend into the corresponding first through hole 401 to position the first spring piece 400, the connecting hole 2112 is aligned with the second through hole 402, so that the connecting bolt 420 can pass through the second through hole 402 to the connecting hole 2112 to connect with the transmission block 211, thereby fixing the first spring piece 400 on the transmission block 211 and realizing the connection between the transmission block 211 and the first spring piece 400.

[0044] For example, in this embodiment, there are two positioning protrusions 2111, which are cylindrical, and correspondingly, there are also two first through holes 401; there is one connecting hole 2112, which is a threaded hole, and correspondingly, there is one second through hole 402. The connecting bolt 420 passes through the second through hole 402 and is assembled in the connecting hole 2112 to realize the transmission connection between the first spring piece 400 and the transmission block 211.

[0045] In another embodiment, this application also provides a flexible hinge device having a first direction Z and a second direction X that are perpendicular to each other. The flexible hinge includes a fixing frame 100, a hinge body 200, a linear drive member 300, and a ball joint 600.

[0046] Specifically, the fixed frame 100 has a receiving cavity 101. The receiving cavity 101 has a relief groove 1011 on its inner wall along the first direction Z to communicate with the outside of the fixed frame 100. The hinge body 200 is located inside the fixed frame 100 and connected to the fixed frame 100. The hinge body 200 has an extension 210 along the second direction X, and part of the extension 210 is located inside the receiving cavity 101. The end of the extension 210 away from the hinge body 200 is connected to a transmission block 211. The linear drive member 300 is fixedly mounted on the fixed frame 100. The ball joint 600 is connected to the linear drive member 300. The linear drive member 300 can drive the ball joint 600 to move along the first direction Z. The end of the ball joint 600 away from the linear drive member 300 is slidably engaged with the transmission block 211.

[0047] See Figure 9 and Figure 10As shown, the difference between this embodiment and the above embodiment is that the radial force from the extension 210 is no longer canceled out. Instead, the force exerted by the extension 210 on the linear drive member 300 is reduced. Specifically, the end of the ball joint 600 abuts against the transmission block 211, and the ball joint 600 and the transmission block 211 are in sliding engagement. When the linear drive member 300 applies driving force to the transmission block 211 through the ball joint 600 to drive the extension 210 and the hinge body 200, it drives the hinge body 200 and the extension 210 to perform a certain action. During a fixed-angle rotation, the transmission block 211 will have a certain positional deviation in the radial direction following the extension 210. Therefore, the end of the ball joint 600 will slide on the transmission block 211 to compensate for the positional and angular deviations of the transmission block 211 and provide overload protection. At the same time, since the ball joint 600 and the transmission block 211 are connected by sliding rather than rigid connection, the force transmitted to the output end of the linear drive 300 through the ball joint 600 is small to prevent positional deviation at the output end of the linear drive 300.

[0048] It is understandable that, since there is sliding friction between the transmission block 211 and the ball head rod 600, wear-resistant materials should be used between the transmission block 211 and the ball head rod 600. The specific material selection can be made according to the design requirements and is not limited here.

[0049] In some embodiments, the ball head 600 includes a rod body 610 and a ball head body 620. The rod body 610 is connected to the linear drive member 300 for transmission. The ball head body 620 is fixedly disposed at one end of the rod body 610 away from the linear drive member 300. The ball head body 620 is slidably engaged with the transmission block 211.

[0050] See Figure 9 and Figure 10 As shown, the rod body 610 is a cylindrical rod body, and the ball head body 620 is hemispherical. The hemispherical ball head body 620 reduces the contact area with the transmission block 211, thereby reducing friction and ensuring that the ball head body 620 can slide stably relative to the transmission block 211.

[0051] In some embodiments, the flexible hinge device further includes an elastic element 700, with one end of the elastic element 700 abutting against the transmission block 211 along the first direction Z, and the other end of the elastic element 700 away from the transmission block 211 abutting against the surface of the accommodating cavity 101 away from the linear drive member 300.

[0052] Continue reading Figure 9 and Figure 10As shown, an elastic element 700 is provided between the transmission block 211 and the bottom wall of the accommodating cavity 101 away from the linear drive member 300. The elastic element 700 abuts against the transmission block 211, thereby giving the transmission block 211 a force toward the ball head body 620 to achieve pre-tightening, ensuring that the transmission block 211, the extension 210 and the hinge body 200 are more stable when rotating and deflecting.

[0053] In some embodiments, the transmission block 211 has a positioning hole 2110 on its surface away from the ball joint rod 600 along the first direction Z, and the elastic member 700 is partially located in the positioning hole 2110. The accommodating cavity 101 has a limiting groove 102 on its surface away from the linear drive member 300 along the first direction Z, and the elastic member 700 is partially located in the limiting groove 102.

[0054] See Figure 9 and Figure 11 As shown, in order to prevent the elastic element 700 from being misaligned, a positioning hole 2110 is opened on the surface of the transmission block 211 away from the ball joint rod 600, so that part of the elastic element 700 is located in the positioning hole 2110, thereby limiting the position of the end of the elastic element 700. Furthermore, a limiting groove 102 is opened on the surface of the accommodating cavity 101 away from the linear drive member 300, and part of the elastic element 700 is located in the limiting groove 102, thereby limiting the position of the elastic element 700 through the limiting groove 102.

[0055] For example, in this embodiment, the elastic element 700 is a spring.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A flexible hinge device having a first direction (Z) and a second direction (X) that are perpendicular to each other, characterized in that, include: A fixing frame (100) has a receiving cavity (101) inside, and the receiving cavity (101) has a relief groove (1011) on the inner wall along the first direction (Z) to communicate with the outside of the fixing frame (100); A hinge body (200) is located inside and connected to the fixing frame (100). The hinge body (200) has an extension (210) along the second direction (X), and the extension (210) is partially located inside the receiving cavity (101). A linear drive unit (300) is fixedly mounted on the fixing frame (100); The first spring (400) is located in the accommodating cavity (101) and extends along the first direction (Z). One end of the first spring (400) is connected to the linear drive member (300), which can drive the first spring (400) to move along the first direction (Z). The other end of the first spring (400) is connected to the extension (210). An abutment (500) is connected at one end along the second direction (X) to the fixing frame (100), and at the other end to the first spring (400).

2. The flexible hinge device according to claim 1, characterized in that, The first spring piece (400) is provided with a first connecting block (410) at one end away from the extension (210) along the first direction (Z), and the first connecting block (410) is connected to the linear drive member (300) in a transmission connection.

3. The flexible hinge device according to claim 2, characterized in that, The abutment (500) is a guide rail, which is connected to the inner wall of the accommodating cavity (101) along the second direction (X), and the guide rail is slidably engaged with the first connecting block (410) along the first direction (Z).

4. The flexible hinge device according to claim 2, characterized in that, The abutment (500) includes a second spring (510) and a second connecting block (520). One end of the second spring (510) along the second direction (X) is connected to the first spring (400), and the other end of the second spring (510) away from the first spring (400) is connected to the second connecting block (520). The second connecting block (520) is connected to the inner wall of the accommodating cavity (101) along the second direction (X).

5. The flexible hinge device according to claim 4, characterized in that, The first spring sheet (400), the first connecting block (410), the second spring sheet (510) and the second connecting block (520) are integrally formed and connected.

6. The flexible hinge device according to any one of claims 1 to 5, characterized in that, The flexible hinge device further includes a transmission block (211) and a connecting bolt (420). The transmission block (211) is fixedly disposed at the end of the extension (210) away from the hinge body (200). The surface of the transmission block (211) away from the extension (210) is provided with a plurality of positioning protrusions (2111) and at least one connecting hole (2112). The first spring piece (400) is provided with a plurality of through holes (401) and at least one second through hole (402) along the second direction (X). The positioning protrusions (2111) pass through the first through holes (401), and the connecting bolt (420) passes through the second through hole (402) to the connecting hole (2112) and connects with the transmission block (211).

7. A flexible hinge device having a first direction (Z) and a second direction (X) that are perpendicular to each other, characterized in that, include: A fixing frame (100) has a receiving cavity (101) inside, and the receiving cavity (101) has a relief groove (1011) on the inner wall along the first direction (Z) to communicate with the outside of the fixing frame (100); A hinge body (200) is located inside and connected to the fixing frame (100). The hinge body (200) has an extension (210) along the second direction (X), and the extension (210) is partially located inside the receiving cavity (101). A transmission block (211) is connected to the end of the extension (210) away from the hinge body (200). A linear drive unit (300) is fixedly mounted on the fixing frame (100); A ball joint (600) is connected to the linear drive (300) for transmission. The linear drive (300) can drive the ball joint (600) to move along the first direction (Z). The end of the ball joint (600) away from the linear drive (300) is slidably engaged with the transmission block (211).

8. The flexible hinge device according to claim 7, characterized in that, The ball joint (600) includes a shaft (610) and a ball head body (620). The shaft (610) is connected to the linear drive (300) for transmission. The ball head body (620) is fixedly disposed at one end of the shaft (610) away from the linear drive (300). The ball head body (620) is slidably engaged with the transmission block (211).

9. The flexible hinge device according to claim 7, characterized in that, The flexible hinge device further includes an elastic element (700), along the first direction (Z), one end of the elastic element (700) abuts against the transmission block (211), and the other end of the elastic element (700) away from the transmission block (211) abuts against the surface of the accommodating cavity (101) away from the linear drive element (300).

10. The flexible hinge device according to claim 9, characterized in that, The transmission block (211) has a positioning hole (2110) on its surface away from the ball head rod (600) along the first direction (Z), and the elastic element (700) is partially located in the positioning hole (2110). The accommodating cavity (101) has a limiting groove (102) on its surface away from the linear drive member (300) along the first direction (Z), and the elastic element (700) is partially located in the limiting groove (102).

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