Adjustable hinge of wearable article

Abstract

The invention provides an adjustable hinge of a wearable article, which comprises a rotating arm, a first rotating connection structure and a second rotating connection structure, the first rotating connection structure comprises a first torsion mechanism, a second torsion mechanism and a third torsion mechanism, and the third torsion mechanism drives the rotating arm to rotate towards a folding direction; the first torsion mechanism comprises a first cam matching structure, a first elastic component and a first friction plate, high torsion is provided when the rotating arm is in the working angle range, locking force is provided when the rotating arm is in the folding angle, low torsion is provided between the folding angle and the working angle, and the second torsion mechanism adopts a structure that a first shaft is wrapped and clamped by a first reed pipe; a hovering angle interval is formed between the folding angle and the working angle through common superposition of the first torsion mechanism, the second torsion mechanism and the third torsion mechanism, and the torsion needed for rotating the rotating arm in the hovering angle interval is smaller than the torsion needed for rotating the rotating arm in the working angle range. The operation experience feeling is good, and the positions of the functional supplies can be adjusted to adapt to individual conditions of different people.

Description

Technical Field

[0001] The invention relates to an adjustable hinge, in particular to a hinge applied to wearable articles. Background Art

[0002] For wearable products, people will carry products that can be rotated and folded or opened to a certain angle. For example, a helmet will be equipped with a special-purpose eyepiece, which is connected to the base through a hinge, and the base is installed on the helmet. When not in use, the eyepiece is flipped up and folded, and when in use, the eyepiece is turned down in front of the eyes. However, wearers always hope to have a better user experience, and different people have different physiological structures, so they always hope that wearable products can be adjusted to suit different people's individual conditions. Summary of the invention

[0003] The purpose of the present invention is to provide an adjustable hinge for wearable articles, which has a good operating experience and can adjust the position of functional articles to suit the individual conditions of different people. To this end, the present invention adopts the following technical solutions: The adjustable hinge of a wearable article comprises a first main body and a rotating arm, wherein the first end of the rotating arm is rotationally connected to the first main body through a first rotating connection structure, and the second end of the rotating arm is connected to a second rotating connection structure; the first rotating connection structure comprises a first shaft, a first torque mechanism, a second torque mechanism and a third torque mechanism, the action direction of the third torque mechanism is to always drive the rotating arm to rotate in the folding direction, the first torque mechanism comprises a first cam matching structure, a first elastic component and a first friction plate, and provides a high torque when the rotating arm is in the working angle range, provides a locking force when the rotating arm is at the folding angle, and provides a low torque between the folding angle and the working angle; the second torque mechanism adopts a structure in which the first spring tube clamps the first shaft; so that between the folding angle and the working angle, a hovering angle interval is formed by the common superposition of the first torque mechanism, the second torque mechanism and the third torque mechanism, and the torque required to rotate the rotating arm in the hovering angle interval is less than the torque required to rotate the rotating arm in the working angle range.

[0004] On the basis of adopting the above technical solutions, the present invention may also adopt the following further technical solutions, or use these further technical solutions in combination: The first cam matching structure includes a first movable cam and a first static cam sleeved on the first shaft, the first shaft is connected to the rotating arm and rotates synchronously, the first movable cam and the first shaft are connected together and rotate synchronously, the first static cam is fixed and cannot rotate with the first shaft, and the first movable cam and the first static cam can both be displaced in the axial direction of the first shaft; the first cam matching structure and the first friction plate are pressed by the first elastic component; the first cam matching structure has a groove corresponding to the folding angle, a convex platform corresponding to the working angle range, and a groove range corresponding to the low torque.

[0005] The first reed tube is fixed, and the third torque mechanism adopts a torsion spring, which is sleeved outside the first elastic component, one end of which is connected to the first moving cam and the other end of which is connected to the first reed tube. A first nut threadedly connected to the first shaft is arranged between the first elastic component and the first reed tube to axially limit the first elastic component and the first reed tube.

[0006] The first main body is provided with a first cavity for accommodating the first torsion mechanism, the second torsion mechanism and the torsion spring. The first spring tube and the first static cam are respectively provided with radial protrusions which are engaged with the grooves on the wall of the first cavity and cannot rotate.

[0007] The first shaft passes through the first cavity, and the first reed tube, the first nut, the gasket, the first elastic component, the first moving cam, the first static cam, the first friction plate, and the cavity cover are sequentially sleeved on the first shaft, and a sealing structure is arranged at the cavity mouth, the rotating arm is connected to one end of the first shaft on the outside of the cavity cover, and the other end of the first shaft is connected to the second nut.

[0008] The second rotating mechanism includes a second shaft, a fourth torque mechanism and a fifth torque mechanism. The second shaft is parallel to the first shaft. The adjustable hinge is also provided with a fixed seat. The fixed seat and the second shaft are fixedly connected and rotate synchronously. The fourth torque mechanism includes a second cam matching structure, a second elastic component and a second friction plate. The fifth torque mechanism adopts a structure in which the second reed tube clamps the second shaft.

[0009] The second end of the rotating arm is provided with a second cavity for accommodating the fourth torque mechanism and the fifth torque mechanism; the second cam matching structure includes a second moving cam and a second static cam sleeved on the second shaft, the second moving cam and the second shaft are connected together and rotate synchronously, the second static cam is connected to the cavity and cannot rotate with the second shaft, and the second moving cam and the second static cam can both be displaced in the axial direction of the second shaft; the second cam matching structure and the second friction plate are pressed by the second elastic component; the second cam matching structure has a convex platform corresponding to the first end of the rotation limit of the second shaft and a convex platform or locking groove corresponding to the second end of the rotation limit of the second shaft, so as to provide a hovering function in a rotation range before the first end of the rotation limit, and a convex platform or locking groove corresponding to the second end of the rotation limit of the second shaft. A rotation range before the end provides a hovering function or a locking function at the second end of the rotation limit, and a groove section is set between the convex platform at the first end of the rotation limit and the convex platform or the locking groove at the second end of the rotation limit in the second cam matching structure; the second torque mechanism is used to increase the torque in the angle range corresponding to the groove section between the convex platform at the first end of the rotation limit and the convex platform or the locking groove at the second end of the rotation limit; the second end of the rotation limit is the rotation end point of the second axis in the same direction as the lifting rotation direction of the rotating arm, the first end of the rotation limit is the rotation end point of the second axis in the opposite direction, and the second axis rotation angle range corresponding to the convex platform at the first end of the rotation limit is the range for adjusting the rotation angle of the second axis within the working angle range.

[0010] The second cam matching structure includes a second movable cam and a second static cam sleeved on the second shaft. The second shaft is connected to the fixed seat and rotates synchronously. The second movable cam and the second shaft are connected together and rotate synchronously. The second static cam is fixed and cannot rotate with the shaft. A second cavity is provided at the second end of the rotating arm to accommodate the fourth torque mechanism and the fifth torque mechanism. The second reed tube and the second static cam are respectively provided with radial protrusions that are engaged with the grooves on the wall of the second cavity and cannot rotate.

[0011] The hinge is provided with a rotating arm on the left and a rotating arm on the right, and the rotating arms on both sides are rotatably connected to the first main body through their own first rotating connection structures respectively, and the second rotating connection structure is provided with a whole second axis, and the left end of the second axis is rotatably connected to the rotating arm on the left through the second rotating connection structure on the left, and the right end is rotatably connected to the rotating arm on the right through the second rotating connection structure on the right.

[0012] The first body of the adjustable hinge is slidably connected to the second body, and the sliding direction is perpendicular to the first axis and the second axis. The hinge is provided with a locking structure of the first body and the second body and an operating key thereof.

[0013] Due to the adoption of the technical solution of the present invention, the present invention can easily and quickly rotate the rotating arm of the product to the use angle, and has a large torque within the use angle range to facilitate fine adjustment of the height and front-to-back distance of the second axis, and it can also have a large torque in the folded state, and there is an intermediate hovering state between the folded state and the use angle. In the intermediate hovering range, the rotating arm can be easily and quickly rotated, and the product can be temporarily suspended. The user does not have to "take off" the product and take a temporary rest. When it is necessary to resume use, the product can be easily rotated at a small angle to enter the use angle range, and the user experience is good. On the basis of being able to operate and adjust in multiple stages, the present invention can also combine a dual-axis structure to more finely and simultaneously adjust the height, front-to-back distance and angle of the product, and finely match the user's own characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of an embodiment of the present invention.

[0015] Figure 2 It is a cross-sectional view of the rotating connection structure of the rotating arm in an embodiment of the present invention.

[0016] Figure 3 It is an exploded view of an embodiment of the present invention.

[0017] Figure 4 Schematic diagram of the rotating connection structure of the rotating arm in an embodiment of the present invention.

[0018] Figure 5 Schematic diagram of a static cam in the rotating connection structure of a rotating arm in an embodiment of the present invention.

[0019] Figure 6 FIG. 4 is an exploded view of a second rotating connection structure in an embodiment of the present invention.

[0020] Figure 7-1 , Figure 7-2 , Figure 7-3 They are schematic diagrams of the rotating arm in the folded position, the intermediate hovering state, and the operating angle range. Implementation

[0021] Refer to the accompanying drawings. The adjustable hinge of the wearable article provided by the present invention includes a first main body 100 and a rotating arm 200, the first end of the rotating arm 200 is rotatably connected to the first main body 100 through a first rotating connection structure, and the second end of the rotating arm 200 is connected to the second rotating connection structure. Taking the wearable article as a helmet as an example, the first main body 100 is located at the end connected to the helmet and the second rotating connection structure is used to connect the article, such as an eyepiece. Through the design of the dual rotation center solution, the position and angle of the object in the up and down directions and the front and back directions can be adjusted to meet the needs of different users for vision and focus, and the device can be rotated to regular use, short rest and long-term non-use state, which is easy to operate. Furthermore, the first main body 100 of the adjustable hinge is slidably connected to the second main body 400, and the sliding direction is perpendicular to the first axis 10 of the first rotating connection structure and the second axis 60 of the second rotating connection structure, so as to further increase the adjustment range in the Z direction to meet the requirements of different users. The hinge is provided with a locking structure of the first body 100 and the second body 400 and an operation key 401 thereof. The locking structure may include a rack 402 along the sliding direction. The operation key 401 is supported by a spring 403 . The operation key 401 is provided with teeth meshing with the rack 402 .

[0022] The first rotating connection structure includes a first shaft 10, a first torque mechanism, a second torque mechanism and a third torque mechanism. The direction of action of the third torque mechanism is to always drive the rotating arm to rotate in the folding direction. The first torque mechanism includes a first cam matching structure, a first elastic component 11 and a first friction plate 12, and provides high torque when the rotating arm 200 is in the working angle range, provides locking force when the rotating arm 200 is at the folding angle, and provides low torque between the folding angle and the working angle. The second torque mechanism adopts a structure in which the first reed tube 21 clamps the first shaft 10, and the reed tube is an elastic sleeve with an axial opening. The third torque mechanism adopts a torsion spring 3 Through the design of multiple torque modules of cam, torsion spring and coil friction, the torque that can be changed at different angles can be realized to meet the different requirements of the device for torque and function in various positions and states. Between the folding angle and the working angle, the hovering angle interval is formed by the common superposition of the first torque mechanism, the second torque mechanism and the third torque mechanism. The torque required to rotate the rotating arm 200 in the hovering angle interval is less than the torque required to rotate the rotating arm 200 in the working angle range, and the torque required to rotate the rotating arm 200 in the working angle range will be greater than the torque required to rotate the rotating arm 200 in the hovering angle interval. In this embodiment, the rotation angle from the maximum working angle (0°) to the folding state is 195°. The working angle range is within the angle range of 0~45°, and high torque free parking can be achieved. At 195°, it is the folding angle. From the folding state to the working angle range, the torque is adjusted by the cam and the torsion spring. When rotating upward, the torque is small to meet the user's requirements for easy operation. Above the working angle range is the hovering angle range. When the user is taking a rest, the device needs to be rotated to an area outside the field of vision for temporary docking. When it is needed, the device can be quickly returned to the working angle range by simply turning down a smaller angle.

[0023] In this embodiment, the first cam matching structure includes a first moving cam 13 and a first static cam 14 sleeved on the first shaft 10. The first shaft 10 is connected to the rotating arm 200 (for example, by welding or interference fit or flat position and snap fit) and rotates synchronously. The first moving cam 13 and the first shaft 10 are connected together (for example, flat position fit) and rotate synchronously. The first static cam 14 is fixed and cannot rotate with the first shaft 10. Both the first moving cam 13 and the first static cam 14 can be displaced in the axial direction of the first shaft 10. The first cam matching structure and the first friction plate 12 are pressed by the first elastic component 11. The first elastic component 11 can be a stack of multiple disc springs. In the first cam matching structure, the first static cam 14 is provided with a groove 141 corresponding to the folding angle of the rotating arm, a convex platform 142 corresponding to the working angle range, and a groove range 143 corresponding to the low torque. The torque required for hovering in the low torque range is filled by the torque output by the spring tube 21 of the second torque mechanism clamping the first shaft 20. In the second torque mechanism, the first reed tube 21 is fixed, and the torsion spring 3 is sleeved outside the first elastic component 11. One end leg 31 of the torsion spring 3 is plugged and connected to the first moving cam 13, and the other end leg 32 is plugged and connected to the first reed tube 21. A first nut 15 threadedly connected to the first shaft 10 is provided between the first elastic component 11 and the first reed tube 21 to axially limit the first elastic component 11 and the first reed tube 22.

[0024] The first main body 100 is provided with a first cavity 101 for accommodating the first torque mechanism, the second torque mechanism and the torsion spring. The first spring tube 21 and the first static cam 14 are fixed by respectively providing radial protrusions 210 and 140 to engage with the groove 105 on the wall of the first cavity 101 and cannot rotate. The groove can allow the torsion spring foot to pass through, which is beneficial to the structural arrangement. The first friction plate 12 is composed of a dynamic friction plate and a static friction plate, wherein the static friction plate is connected to the groove in the first cavity 101 through the protrusion 120 and cannot rotate, and the dynamic friction plate is connected to the first shaft 10 and rotates with the first shaft 10.

[0025] The first shaft 10 passes through the first cavity 101, and the first reed tube 21, the first nut 15, the gasket 16, the first elastic component 11, the first moving cam 13, the first static cam 14, the first friction plate 12, and the cavity cover 102 are sequentially sleeved on the outside of the first shaft, and a cavity sealing structure 103 is arranged at the cavity mouth, the rotating arm 200 is connected to one end of the first shaft 10 on the outside of the cavity cover 103, and the other end of the first shaft 10 is connected to the second nut 104.

[0026] The second rotating mechanism includes a second shaft 60, a fourth torque mechanism and a fifth torque mechanism. The second shaft 60 is parallel to the first shaft 10. The adjustable hinge is further provided with a fixing seat 300. The fixing seat 300 can be connected to a connecting piece of an object (such as an eyepiece). The fixing seat 300 is fixedly connected to the second shaft 60 and rotates synchronously (such as a flat position connection). The fourth torque mechanism includes a second cam matching structure, a second elastic component 41 and a second friction plate 42. The fifth torque mechanism adopts a structure in which the second reed tube 51 clamps the second shaft 60. The second elastic component 41 can adopt a plurality of disc reeds.

[0027] The second cam matching structure includes a second moving cam 43 and a second static cam 44 sleeved on the second shaft 60. The second shaft 60 is connected to the fixed seat 300 and rotates synchronously. The second moving cam 43 and the second shaft 60 are connected together (for example, flat position matching) and rotate synchronously. The second static cam 44 is fixed and cannot rotate with the second shaft 60. The second end of the rotating arm 200 is provided with a second cavity 201 for accommodating the fourth torque mechanism and the fifth torque mechanism. The second reed tube 51 and the second static cam 44 are respectively provided with radial protrusions 510 and 440 to be engaged with the grooves on the wall of the second cavity 201 and fixed and cannot rotate. The second friction plate 42 is composed of a moving friction plate and a static friction plate, wherein the static friction plate is connected to the groove in the second cavity 201 through the protrusion 420 and cannot rotate, and the moving friction plate is connected to the second shaft 60 and rotates with the second shaft 60.

[0028] The second shaft 60 passes through the second cavity 201 and is connected to the fixed seat 300. The second reed tube 51, the second friction plate 42, the second cam matching structure, the second elastic component 41, and the third nut 45 are sequentially sleeved on the outside of the second shaft 60, and sealing structures 202 and 203 are respectively arranged at the ends of the second cavity 201. The third nut 45 is threadedly connected to the second shaft 60.

[0029] The second static cam 44 has a convex platform 441 corresponding to the first end of the second axis's rotation limit and a convex platform 442 corresponding to the second end of the second axis's rotation limit, so as to provide a hovering function in a rotation range (for example, 30°) before the first end of the rotation limit, and can accurately adjust the angle of the second axis when the rotating arm rotates to the working angle range (while also determining the distance and height in the front-to-back direction, taking the eyepiece as an example, that is, after the eyepiece is placed in front of the eye and the distance between the eyepiece and the glasses is determined, the angle of the eyepiece can be accurately adjusted), and provide a hovering function in a rotation range before the second end of the rotation limit for positioning when folded. The second static cam 44 has a groove section 443 between the convex platform 441 at the first end of the rotation limit and the convex platform 442 at the second end of the rotation limit; the second torque mechanism is used to increase the torque in the angle range corresponding to the groove section 443 between the convex platform 441 at the first end of the rotation limit and the convex platform 442 at the second end of the rotation limit, so as to ensure the rapid response of the second axis and prevent it from feeling loose.

[0030] The second end of the rotation limit is the rotation end point in the same direction as the lifting rotation direction of the second axis 60 and the rotating arm 200, the first end of the rotation limit is the rotation end point in the opposite direction of the second axis, and the second axis rotation angle range corresponding to the convex platform 441 at the first end of the rotation limit is the range for adjusting the second axis rotation angle within the working angle range.

[0031] The hinge adopts a double-arm structure, and is provided with a rotating arm 200 on the left and a rotating arm 200 on the right. The rotating arms 200 on both sides are rotatably connected to the first main body 100 through their own first rotating connection structures, and the second rotating connection structure is provided with a whole second shaft 60. The left end of the second shaft 60 is rotatably connected to the rotating arm 200 on the left through the second rotating connection structure on the left, and the right end is rotatably connected to the rotating arm 200 on the right through the second rotating connection structure on the right.

[0032] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the protection scope of the present invention.

[0033] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internally connected between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are also used only for simplicity of description, and do not indicate or imply relative importance.

Claims

1. An adjustable hinge for a wearable article, comprising a first body and a rotating arm, wherein a first end of the rotating arm is rotatably connected to the first body through a first rotating connection structure, and a second end of the rotating arm is connected to a second rotating connection structure; characterized in that The first rotating connection structure includes a first shaft, a first torque mechanism, a second torque mechanism and a third torque mechanism. The direction of action of the third torque mechanism is to always drive the rotating arm to rotate in the folding direction. The first torque mechanism includes a first cam matching structure, a first elastic component and a first friction plate, and provides high torque when the rotating arm is in the working angle range, provides a locking force when the rotating arm is at the folding angle, and provides low torque between the folding angle and the working angle; the second torque mechanism adopts a structure in which the first spring tube clamps the first shaft; so that between the folding angle and the working angle, a hovering angle range is formed by the joint superposition of the first torque mechanism, the second torque mechanism and the third torque mechanism, and the torque required to rotate the rotating arm in the hovering angle range is less than the torque required to rotate the rotating arm in the working angle range.

2. The adjustable hinge of a wearable article according to claim 1, characterized in that The first cam matching structure includes a first movable cam and a first static cam sleeved on the first shaft, the first shaft is connected to the rotating arm and rotates synchronously, the first movable cam and the first shaft are connected together and rotate synchronously, the first static cam is fixed and cannot rotate with the first shaft, and the first movable cam and the first static cam can both be displaced in the axial direction of the first shaft; the first cam matching structure and the first friction plate are pressed by the first elastic component; the first cam matching structure has a groove corresponding to the folding angle, a convex platform corresponding to the working angle range, and a groove range corresponding to the low torque.

3. The adjustable hinge of the wearing article according to claim 2, characterized in that The first reed tube is fixed, and the third torque mechanism adopts a torsion spring, which is sleeved outside the first elastic component, one end of which is connected to the first moving cam and the other end of which is connected to the first reed tube. A first nut threadedly connected to the first shaft is arranged between the first elastic component and the first reed tube to axially limit the first elastic component and the first reed tube.

4. The adjustable hinge of a wearing article according to claim 3, characterized in that The first main body is provided with a first cavity for accommodating the first torsion mechanism, the second torsion mechanism and the torsion spring. The first spring tube and the first static cam are respectively provided with radial protrusions which are engaged with the grooves on the wall of the first cavity and cannot rotate.

5. The adjustable hinge of the wearing article according to claim 4, characterized in that The first shaft passes through the first cavity, and the first reed tube, the first nut, the gasket, the first elastic component, the first moving cam, the first static cam, the first friction plate, and the cavity cover are sequentially sleeved on the first shaft, and a sealing structure is arranged at the cavity mouth, the rotating arm is connected to one end of the first shaft on the outside of the cavity cover, and the other end of the first shaft is connected to the second nut.

6. The adjustable hinge of a wearing article according to claim 1, characterized in that The second rotating mechanism includes a second shaft, a fourth torque mechanism and a fifth torque mechanism. The second shaft is parallel to the first shaft. The adjustable hinge is also provided with a fixed seat. The fixed seat and the second shaft are fixedly connected and rotate synchronously. The fourth torque mechanism includes a second cam matching structure, a second elastic component and a second friction plate. The fifth torque mechanism adopts a structure in which the second reed tube clamps the second shaft.

7. The adjustable hinge of a wearing article according to claim 6, characterized in that The second end of the rotating arm is provided with a second cavity for accommodating the fourth torque mechanism and the fifth torque mechanism; the second cam matching structure includes a second moving cam and a second static cam sleeved on the second shaft, the second moving cam and the second shaft are connected together and rotate synchronously, the second static cam is connected to the cavity and cannot rotate with the second shaft, and the second moving cam and the second static cam can both be displaced in the axial direction of the second shaft; the second cam matching structure and the second friction plate are pressed by the second elastic component; the second cam matching structure has a convex platform corresponding to the first end of the rotation limit of the second shaft and a convex platform or locking groove corresponding to the second end of the rotation limit of the second shaft, so as to provide a hovering function in a rotation range before the first end of the rotation limit, provide a hovering function in a rotation range before the second end of the rotation limit, or provide a locking function at the second end of the rotation limit, and a groove section is provided between the convex platform at the first end of the rotation limit and the convex platform or locking groove at the second end of the rotation limit in the second cam matching structure; the second torque mechanism is used to increase the torque of the groove section corresponding to the angle interval between the convex platform at the first end of the rotation limit and the convex platform or locking groove at the second end of the rotation limit; The second end of the rotation limit is the rotation end point of the second axis in the same direction as the lifting rotation direction of the rotating arm, the first end of the rotation limit is the rotation end point of the second axis in the opposite direction, and the second axis rotation angle range corresponding to the convex platform at the first end of the rotation limit is the range for adjusting the second axis rotation angle within the working angle range.

8. The adjustable hinge of a wearing article according to claim 6, characterized in that The second cam matching structure includes a second movable cam and a second static cam sleeved on the second shaft. The second shaft is connected to the fixed seat and rotates synchronously. The second movable cam and the second shaft are connected together and rotate synchronously. The second static cam is fixed and cannot rotate with the shaft. A second cavity is provided at the second end of the rotating arm to accommodate the fourth torque mechanism and the fifth torque mechanism. The second reed tube and the second static cam are respectively provided with radial protrusions that are engaged with the grooves on the wall of the second cavity and cannot rotate.

9. The adjustable hinge of a wearing article according to claim 1, characterized in that The hinge is provided with a rotating arm on the left and a rotating arm on the right, and the rotating arms on both sides are rotatably connected to the first main body through their own first rotating connection structures respectively, and the second rotating connection structure is provided with a whole second axis, and the left end of the second axis is rotatably connected to the rotating arm on the left through the second rotating connection structure on the left, and the right end is rotatably connected to the rotating arm on the right through the second rotating connection structure on the right.

10. An adjustable hinge for a wearable article as claimed in claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that The first body of the adjustable hinge is slidably connected to the second body, and the sliding direction is perpendicular to the first axis and the second axis. The hinge is provided with a locking structure of the first body and the second body and an operating key thereof.

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