Hinge on wearable device
By using a dual-axis hinge structure and a combination of cams and levers, the problem of space occupation at both ends of the central shell of AR glasses hinges is solved, achieving bistable functionality and enhancing the design flexibility of wearable devices.
Patent Information
- Application Number
- CN202520482302.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing AR glasses hinge mechanisms require space at both ends of the central housing along the axial direction, making it difficult to provide bistable functionality in other parts.
It adopts a dual-axis hinge structure and utilizes an elastic component perpendicular to the rotation axis. Through the cooperation of cams and levers, it achieves the bistable function of the connecting frame and avoids occupying the space at both ends of the central outer shell.
It achieves bistable functionality without occupying space at both ends of the central outer shell, enhancing the structural design selectivity of wearable devices.
Smart Images
Figure CN223911131U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hinge on a wearable device, especially AR, VR glasses. BACKGROUND
[0002] AR glasses include a frame, a leg and a hinge, and the connecting frames on both sides of the hinge are rotationally connected, and the connecting frames on both sides are connected with the leg and the frame respectively. One of the hinges of the AR glasses needs to provide a bistable function, so that the hinge can exert a certain elastic force on the leg in the open and folded states. At present, a spring is usually sleeved on the hinge shaft, a sliding cam is sleeved on the shaft, a rotating cam is arranged on one of the connecting frames, the two cams are tightly pressed by the spring, and the elastic force locking is realized through the control of the cams. However, such a mechanism will pass through the middle shell of the hinge in the axial direction, and it is difficult to use in the case where the both ends of the middle shell have other occupation needs. SUMMARY
[0003] The utility model aims at providing a hinge on a wearable device, which can provide a bistable function and does not need to use the space at the axial ends of the middle shell. To this end, the utility model adopts the following technical solutions:
[0004] A hinge on a wearable device, comprising a middle shell and a connecting frame, the connecting frame being rotatably mounted and being able to rotate relative to the middle shell about a first axis; characterized in that the connecting frame is provided with a cam, and the hinge further comprises a structure controlled by the cam, comprising:
[0005] The hinge is provided with a lever, the first end of the lever is matched with the cam, the second end of the lever is rotatable about a second axis, the second axis is perpendicular to the first axis, and the lever is rotatable about the second axis when it rotates about its rotation support axis; the hinge is further provided with a bracket, the bracket is connected with the lever, rotates about the second axis together with the lever and provides rotation support for the lever; the hinge is further provided with a spring, the spring is matched with the lever, through the matching of the cam and the first end of the lever, the rotation opening and closing stroke of the connecting frame both include the processes of storing energy of the spring and releasing energy of the spring, and the spring still retains potential energy when it rotates to the limit position, and the lever acts on the connecting frame to keep it stable when it is kept at the limit position.
[0006] On the basis of the above technical solutions, the utility model can further adopt the following technical solutions, or use these further technical solutions in combination:
[0007] The hinge is provided with a second shaft, and the second shaft is taken as an axis of a second axis.
[0008] The support sets the second shaft, and the second shaft is rotationally connected with the middle shell.
[0009] The spring sleeve is arranged on the second shaft, the second shaft is provided with a supporting position of the spring, and the second end is also sleeved on the shaft and movably connected with the shaft.
[0010] The spring and the cam surface are matched, the spring always pushes the second end of the lever, and the first end of the lever is limited by the cam surface, so that the angle of rotation of the lever around the rotation supporting axis is limited.
[0011] The connecting frame is provided with two cams, and the hinge is provided with two sets of structures controlled by the cams between the two cams, and each set of structures controlled by the cams is matched with one cam.
[0012] The connecting frame is provided with a groove structure opening towards the middle shell at a position adjacent to the middle shell, the two sides of the groove structure are provided with the cams in a face-to-face mode, and end structures of each set of structures controlled by the cams extend out of the middle shell in the second axis direction, and the end structures include the lever.
[0013] Limiting members are arranged between the two parallel second shafts, the limiting members are provided with two holes and are sleeved on the two second shafts at the same time, and the limiting members serve as supporting structures of the springs.
[0014] The hinge is a double-shaft hinge, including a first connecting frame and a second connecting frame rotationally connected with the middle shell, first axes of the connecting frames are parallel and can rotate relative to the middle shell around the first axes, respectively, the connecting frames are provided with cams, and the hinge is provided with structures controlled by the cams for the connecting frames.
[0015] Each connecting frame is provided with two cams, the hinge is provided with two sets of structures controlled by the cams between the two cams, and each set of structures controlled by the cams is matched with one cam; the connecting frame is provided with two cams, the hinge is provided with two sets of structures controlled by the cams between the two cams, and each set of structures controlled by the cams is matched with one cam; the lever connected with the support at the same end of the first axes of the first connecting frame and the second connecting frame is integrated, and the second shaft connected with the lever at the same end of the first axes of the first connecting frame and the second connecting frame is a different segment of the same shaft.
[0016] The connecting frame is rotationally connected with the end of the middle shell through an arc guide rail and an arc sliding block.
[0017] According to the technical scheme of the utility model, the elastic component is arranged in a space perpendicular to the rotation axis of the hinge and is rotationally connected with the connecting frame, so that the double-stable function can be provided, and the space at the two ends of the middle shell in the axial direction is not needed, and more selection spaces can be provided for the structural design and personalized function setting of the AR, VR glasses and other wearable devices. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A cross-sectional view of the embodiment provided by the utility model in a direction perpendicular to the rotation axis.
[0019] Figure 2 An exploded view of the cooperation between the middle support and the middle housing in the embodiment provided by the utility model.
[0020] Figure 3 An exploded view of the cooperation between the lever and the connecting frame in the embodiment provided by the utility model.
[0021] Figure 4 A schematic diagram reflecting the hinge movement process in the embodiment provided by the utility model with the first rotation limit angle, the intermediate transition angle and the second rotation limit angle respectively through the perspective view and the front view.
[0022] Figure 5 A schematic diagram reflecting the hinge movement process in the embodiment provided by the utility model with the first rotation limit angle, the intermediate transition angle and the second rotation limit angle respectively through the spring deformation and the connecting frame posture. DETAILED DESCRIPTION
[0023] With reference to the drawings. The embodiment takes the hinge applied to the AR glasses as an example, and takes the biaxial hinge as an example. The hinge comprises a middle housing 300, a first connecting frame 100 and a second connecting frame 200. The connecting frames are rotatably installed. The first axis of each connecting frame is parallel and can rotate relative to the middle housing 300 around the respective first axis. The first connecting frame 100 and the second connecting frame 200 can be connected with the temple and the frame respectively.
[0024] The following structure is the same for each connecting frame, so the first connecting frame 100 is taken as an example for description.
[0025] The connecting frame is provided with a cam 1. The hinge is provided with a structure controlled by the cam 1, which comprises:
[0026] The hinge is provided with a lever 2, a first end 21 of the lever 2 is matched with the cam 1, a second end 22 of the lever 2 can rotate around a second axis, the second axis (Y axis) is perpendicular to the first axis (X axis), and the lever 2 can also rotate around the second axis when rotating around the rotating support axis. The hinge is also provided with a bracket 3, the bracket 3 is connected with the lever 2, rotates around the second axis together with the lever 2 and provides rotating support for the lever; the hinge is provided with a spring 4, the spring 4 is matched with the lever 2, through the matching of the cam 1 and the first end 21 of the lever, the rotating opening and closing stroke of the bracket includes the process of storing energy of the spring and the process of releasing energy of the spring, and the spring 3 still retains potential energy when the bracket rotates to the two stroke limit positions, and the bracket is kept stable at the two limit positions by the action of the lever 2 on the bracket. As shown in Figure 4 、 5 , the process from 0° (such as corresponding to the maximum opening angle or folding angle of the glasses legs) to the critical angle (such as 45°) is the process of driving rotation by hand, and also the process of storing energy of the spring, and the process from the critical angle to 90° is the automatic process driven by the release of energy of the spring when the hand is released. Conversely, the process from 90° to the critical angle is the process of driving rotation by hand, and also the process of storing energy of the spring, and the process from the critical angle to 0° is the automatic process driven by the release of energy of the spring when the hand is released.
[0027] The rotating of the bracket at the two stroke ends can be limited by setting a limiting structure, which can be achieved by setting a stop block, a protrusion or the like structure on the frame, the glasses legs of the AR glasses or in the hinge, and the spring 4 is pre-pressed during installation.
[0028] For the above-mentioned conversion of energy storage and release and control of the energy storage and release process, the cam 1 can adopt a cam surface with a wave crest 11 and two side slopes 12 and 13 to control the corresponding rotation of the lever 2. The Z-direction displacement amount generated by the cam 2 when moving around the first axis with the bracket can be followed and eliminated by the rotation of the lever 2 and the bracket 3 around the second axis. And, using the second end 22 of the lever as the rotating connection end for rotating around the second axis can reduce the occupation of the intermediate housing by the movement of the above-mentioned structure. For the limiting of the lever, the matching between the spring 4 and the cam surface can be adopted, the spring 4 always pushes the second end 22 of the lever, and the first end 21 of the lever is limited by the cam surface to limit the angle of the lever 2 rotating around the rotating support axis.
[0029] In the figure, the number 31 is the connecting hole of the bracket 3 to the lever rotating shaft, the center line of which can be regarded as the rotating support axis.
[0030] The hinge is provided with a second shaft 32, which is provided with a second axis as an axis. In the embodiment, the support is provided with the second shaft 32, which is rotationally connected with the middle shell 300, a clamping seat 301 is arranged in the middle shell 300, and the second shaft 32 is rotationally clamped with the clamping seat 301.
[0031] The spring 4 is sleeved on the second shaft 32, the second shaft 32 is provided with a support structure of the spring 4, the second end 22 of the lever is provided with a hole or a groove, and the second shaft 32 is also sleeved on the second shaft 32 through the hole or the groove and is movably connected with the second shaft 32, so that the spring 4 can be actuated to store energy or be driven to move by the spring 4.
[0032] As can be seen from the above structure, the structure for maintaining the limit position in a stable state can be realized by spring energy storage and release in the second axis direction, that is, the Y direction, and the space at both ends of the middle shell is not occupied.
[0033] As shown in the figure, in the embodiment, the connecting frame is provided with two cams 1, the hinge is provided with two sets of structures controlled by the cams between the two cams, and each set of structures controlled by the cams is matched with one cam. The total force value of the spring 4 can be improved.
[0034] Limiting pieces 33 are arranged between the two parallel second shafts 32, which are used for strengthening the stability of the two second shafts and the support, the limiting pieces 33 are provided with two holes and are sleeved on the two second shafts 32 at the same time, and the limiting pieces 33 serve as the support structure of the spring 4.
[0035] Open groove structures 5 are arranged at the positions, where the connecting frame is adjacent to the middle shell, and face each other on the two sides of the groove structure 5, two cams 1 are arranged on the two sides of the groove structure 5, end structures of each set of structures controlled by the cams are extended out of the middle shell in the direction of the second axis, and the end structures include the lever 2. In this way, the two end structures can be shielded by the accessory structure of the AR glasses, and the volume of the middle shell can be further reduced.
[0036] As shown in the figure, by adopting the structure of the utility model, the number of parts and the volume occupied can be further reduced while the motion stability and the spring force value are increased: the support connected with the lever 2 at the same end of the first axis of the first connecting frame 100 and the second connecting frame 200 is arranged in an integrated manner, and the second shaft 32 connected with the lever 2 at the same end of the first axis of the first connecting frame 100 and the second connecting frame 200 is a different section of the same shaft.
[0037] The connecting frame is rotationally connected with the end of the middle shell 300 through the circular arc guide rail 61 and the circular arc slider 62, and similarly, the connection through the virtual rotation shaft avoids the space occupation or reduces the axial occupation of the space at both ends of the middle shell. The first axis is the center line of the circular arc slider 62.
[0038] The above merely describes specific embodiments of the present application, but the structural features of the present application are not limited thereto, and any person skilled in the art can make changes or modifications in the field of the present application, which are all covered in the protection scope of the present application.
[0039] It should be noted that the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion. The terms "mount", "provide", "have", "connect", "connect", "socket" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0040] In the description of the present application, it should be understood that the terms "one end", "the other end", "outer side", "inner side", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second" are only used for simplicity in description, and do not indicate or imply relative importance.
Claims
1. A hinge on a wearable device, comprising a middle housing, a connecting frame rotatably mounted to be rotatable with respect to the middle housing about a first axis; characterized in that, The connecting frame is provided with a cam, the hinge further comprises a structure controlled by the cam, comprising: The hinge is provided with a lever, the first end of the lever is matched with the cam, the second end of the lever can rotate around a second axis, the second axis is perpendicular to the first axis, and the lever can also rotate around the second axis when the lever rotates around the rotating support axis; the hinge is further provided with a bracket, the bracket is connected with the lever, rotates around the second axis together with the lever and provides rotating support for the lever; the hinge is further provided with a spring, the spring is matched with the lever, through the matching of the cam and the first end of the lever, the rotating opening and closing stroke of the connecting frame both include the process of storing energy of the spring and the process of releasing energy of the spring, and the spring still retains potential energy when rotating to the limit position, and the lever acts on the connecting frame to keep it stable when it is kept at the limit position.
2. A hinge on a wearable device as claimed in claim 1, wherein, The hinge is provided with a second shaft, and the second shaft is arranged around a second axis.
3. A hinge on a wearable device as claimed in claim 2, wherein, The bracket is provided with the second shaft, and the second shaft is rotationally connected with the middle shell.
4. A hinge on a wearable device as claimed in claim 2, wherein, The spring is sleeved on the second shaft, the second shaft is provided with a supporting part of the spring, and the second end is also sleeved on the shaft and movably connected with the shaft.
5. A hinge on a wearable device as claimed in claim 3, wherein, The spring is sleeved on the second shaft, the second shaft is provided with a supporting structure of the spring, and the second end is also sleeved on the shaft and movably connected with the shaft.
6. A hinge on a wearable device as claimed in claim 1, wherein, The spring and the cam surface are matched, the spring always pushes the second end of the lever, and the first end of the lever is limited by the cam surface to limit the angle of rotation of the lever around the rotating support axis.
7. A hinge for a wearable device as claimed in claim 1, 2, 3, 4, 5 or 6, wherein, The connecting frame is provided with two cams, and the hinge is provided with two sets of structures controlled by the cams between the two cams, and each set of structures controlled by the cams is matched with one cam.
8. A hinge on a wearable device as claimed in claim 7, wherein, The part where the connecting frame is adjacent to the middle shell is provided with a groove structure opening towards the middle shell, the two sides of the groove structure are provided with the cams in a face-to-face manner, the end structure of each set of structures controlled by the cams extends out of the middle shell in the direction of the second axis, and the end structure comprises the lever.
9. A hinge on a wearable device as claimed in claim 7, wherein, Limiting members are arranged between the two parallel second shafts, the limiting members are provided with two holes and are sleeved on the two second shafts at the same time, and serve as the supporting structure of the spring.
10. A hinge on a wearable device as claimed in claim 1, wherein, The hinge is a double-shaft hinge, comprising a first connecting frame and a second connecting frame rotationally connected with the middle shell, the first axes of the connecting frames are parallel and can rotate relative to the middle shell around the respective first axes; each connecting frame is provided with a cam, and the hinge is provided with a structure controlled by the cam for each connecting frame.
11. A hinge for a wearable device as claimed in claim 2, 3, 4, 5 or 6, wherein, The hinge is a double-shaft hinge, comprising a first connecting frame and a second connecting frame rotationally connected with the middle shell, the first axes of the connecting frames are parallel and can rotate relative to the middle shell around the respective first axes; each connecting frame is provided with a cam, and the hinge is provided with a structure controlled by the cam for each connecting frame.
12. A hinge on a wearable device as claimed in claim 10, wherein, Each connecting frame is provided with two said cams, two sets of structures controlled by the cams are arranged between the two cams, and each set of the structures controlled by the cams is matched with one cam respectively; the supports connected with the levers located at the same end of the first axis of the first connecting frame and the second connecting frame are integrated, and the second shafts connected with the levers located at the same end of the first axis of the first connecting frame and the second connecting frame are different segments of the same shaft.
13. A hinge on a wearable device as claimed in claim 10, wherein, The part adjacent to the middle shell of each connecting frame is provided with an open groove structure towards the middle shell, two said cams are arranged on the opposite sides of the groove structure, and the end structures of each set of the structures controlled by the cams extend out of the middle shell in the direction of the second axis, and the end structures include the levers.
14. A hinge on a wearable device as claimed in claim 1 or 10, wherein, The connecting frame is rotationally connected with the end of the middle shell through a circular arc guide rail and a circular arc sliding block.