Segmented hinge for electronic products with rebound function

Abstract

The present invention provides a segmented hinge for electronic products with a rebound function, comprising a first connecting component, a second connecting component and a shaft, wherein the first connecting component and the second connecting component are respectively rotatably connected to the shaft; the hinge is characterized in that a torque mechanism combination is provided, wherein the torque mechanism combination comprises a first torque mechanism and a second unidirectional torque mechanism, and the first torque mechanism and the second unidirectional torque mechanism are mutually independent torque units. The present invention can improve the wearing effect of wearable electronic products, achieve higher friction and rebound values ​​at small diameters, and can achieve a torque rebound of more than 50Nmm within a diameter of 3mm; and the torques in the friction stage and the rebound stage are independently adjustable, and in the rebound stage, the product can rebound within a required angle range, and can be preferably applied to wearable devices such as AR / VR head-mounted devices / laptop stands / wireless earphone charging boxes.

Description

Technical Field

[0001] The present invention relates to hinges for electronic products, in particular to hinges for wearable appliances. Background Art

[0002] Common wearable devices rely on their inherent elasticity or flexibility to maintain a tight fit on the human body. For example, glasses rely on a flexible frame to move from a neutral position to a fully open position, then rebound, maintaining a secure grip on the head thanks to the elasticity or flexibility of the temples. Achieving sufficient force within a compact size to enhance the wearer's feel, prevent movement, and improve comfort remains a challenge that needs to be addressed.

[0003] Currently, the hinges of wearable devices on the market generally use torsion springs to achieve rebound, and the friction torque and spring rebound force are superimposed, making it impossible to adjust the friction torque and the automatic rebound feel independently. Furthermore, rebound action can only be achieved at the maximum working angle. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a segmented hinge for electronic products with a rebound function, which can bring flexibility or elasticity to wearable electronic products and improve the wearing experience of wearable electronic products. To this end, the present invention adopts the following technical solutions:

[0005] A segmented hinge for electronic products with a rebound function comprises a first connecting component, a second connecting component and a shaft, wherein the first connecting component and the second connecting component are respectively rotatably connected to the shaft; it is characterized in that the hinge is provided with a torsion mechanism combination, wherein the torsion mechanism combination comprises a first torsion mechanism and a second one-way torsion mechanism, and the first torsion mechanism and the second one-way torsion mechanism are torque units independent of each other, the first torsion structure adopts a spring tube to clamp with the shaft, and the second torsion mechanism adopts an end face cam matching structure, comprising a first cam, a second cam and an elastic element sleeved on the shaft; the hinge is also provided with a first rotation angle range limiting structure and a second rotation angle limiting structure, the first rotation angle range limiting structure corresponds to the rotation limit of the first connecting component from the initial position to the first opening angle, and the second rotation angle limiting structure corresponds to the rotation limit of the second connecting component and the shaft The maximum relative rotation angle between the two, the relative rotation between the second connecting part and the shaft is connected with the relative rotation between the first connecting part and the shaft; the first connecting part is connected to the spring tube of the first torsion mechanism, and the second connecting part is connected to the second cam. The first cam is connected to the shaft for anti-rotation but can slide relative to the shaft, and the second cam is connected to the shaft for rotation; the opening rotation resistance torque applied by the second one-way torsion mechanism between the second connecting part and the shaft is greater than the resistance torque of the first torsion mechanism on the first connecting part; the elastic element presses the first cam and the second cam to maintain cam control, and between the initial angle between the second connecting part and the shaft and the angle limited by the second rotation angle limiting structure, the cam control structure is in the control cooperation of the uphill unstable section, so that the second connecting part has a tendency to rotate toward the initial position between the shafts.

[0006] 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:

[0007] A fixing portion is provided near the outer end portion of the shaft, the reed pipe is provided on the shaft outside the fixing portion, the first cam, the second cam and the elastic element are provided on the shaft inside the fixing portion, the fixing portion is provided with a fixed limiting portion of a first rotation angle limiting structure, and the reed pipe or a component that rotates synchronously with the reed pipe is provided with a rotating portion of the first rotation angle limiting structure that cooperates with the fixed limiting portion.

[0008] The second cam abuts against the inner side of the fixing portion, and the elastic element presses the first cam and the second cam.

[0009] The rotating portion is further provided with an extended axial extension portion, and the second cam or a component that rotates synchronously with the second cam is provided with a limiting portion, and the axial extension portion and the limiting portion cooperate to form a second rotation angle limiting structure.

[0010] A rotation angle limiting structure is provided between the first cam and the second cam. The rotation angle limiting structure includes a groove and a cam. The limiting angle of the limiting structure corresponds to an angle between an initial angle and a second rotation angle between the second connecting component and the shaft.

[0011] When the second connecting component and the shaft are at an initial angle, the first cam and the second cam are in a self-locking state.

[0012] The maximum outer diameters of the first cam and the second cam are no greater than 3.2 mm, and the rebound torque output by the second torque mechanism is no less than 50 Nmm.

[0013] The first rotation angle range is greater than an angle range between an initial angle between the second connecting component and the shaft and an angle limited by the second rotation angle limiting structure.

[0014] The first rotation angle range is 85-92°, and the angle range between the initial angle between the second connecting component and the shaft and the angle limited by the second rotation angle limiting structure is 14-17°.

[0015] The electronic products include head-mounted devices and notebook stands.

[0016] Due to the adoption of the technical solution of the present invention, the present invention can improve the wearing effect of wearable electronic products, achieve higher friction and rebound force values ​​at small diameters, and can achieve a torque rebound of more than 50Nmm within a diameter of 3mm; and the torque in the friction stage and the rebound stage are separately adjustable. In the rebound stage, it can rebound within the required angle range, and can be well applied to wearable devices such as AR / VR head-mounted devices / laptop stands / wireless earphone charging boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a hinge embodiment provided by the present invention, and Figure 10-2 The status displayed is the same.

[0018] Figure 2 for Figure 1 Exploded view of the illustrated embodiment.

[0019] Figure 3 for Figure 1 Schematic diagram of the connection between the first connecting component and the shaft in the illustrated embodiment.

[0020] Figure 4 for Figure 1 Schematic diagram of the limiting cooperation of the first connecting component in the first rotation angle range of the embodiment shown.

[0021] Figure 5 for Figure 1Schematic diagram of the limiting fit at the end of the second rotation angle range of the embodiment shown.

[0022] Figure 6 for Figure 1 Schematic diagram of the connection between the first cam and the shaft of the illustrated embodiment.

[0023] Figure 7 for Figure 1 Schematic diagram of the cooperation between the first cam and the second cam of the embodiment shown at the starting end of the second rotation angle range.

[0024] Figure 8 for Figure 1 Schematic diagram of the cooperation between the first cam and the second cam at the end of the second rotation angle range in the illustrated embodiment.

[0025] Figure 9-1 、 9-2 , 9-3 respectively Figure 1 The illustrated embodiment is a schematic end view at a starting position, an end of a first rotation angle range, that is, a starting end of a second rotation angle range, and an end of a second rotation angle range.

[0026] Figure 10-1 、 10-2 , 10-3 respectively Figure 1 The illustrated embodiment is a front view at the starting position, at the end of the first rotation angle range, that is, at the starting end of the second rotation angle range, and at the end of the second rotation angle range. DETAILED DESCRIPTION

[0027] In the following embodiments, VR or AR glasses are used as an example of electronic products.

[0028] The present invention provides a segmented hinge for electronic products with a rebound function, comprising a first connecting component 1, a second connecting component 2, and a shaft 3. The first connecting component 1 and the second connecting component 2 are each rotatably connected to the shaft 3. Two functional structures in the electronic product requiring a rotational connection are connected to the first connecting component 1 and the second connecting component 2, respectively. For VR glasses, the two functional structures requiring a rotational connection can be the glasses frame and the glasses legs, respectively. The first connecting component 1 and the second connecting component 2 can be configured as connecting arms or connecting frames.

[0029] The hinge is equipped with a torque mechanism assembly, comprising a first torque mechanism and a second unidirectional torque mechanism. The first and second unidirectional torque mechanisms are independent torque units, enabling flexible adjustment of torque specifications. The first torque mechanism utilizes a spring tube 4 to clamp the shaft 3. The spring tube 4 has an axial slit 41, which provides elasticity and secures the shaft 3. The second torque mechanism utilizes an end-face cam structure, comprising a first cam 51, a second cam 52, and an elastic element 53, which are sleeved on the shaft 3.

[0030] The hinge is further provided with a first rotation angle range limiting structure and a second rotation angle limiting structure, wherein the first rotation angle range limiting structure corresponds to the first connecting member 1 from the initial position ( Figure 9-1 ) to the first opening angle ( Figure 9-2 ) rotation limit, the second rotation angle limiting structure corresponds to the maximum relative rotation angle between the second connecting part 2 and the shaft 3, the relative rotation between the second connecting part 2 and the shaft 3 is connected with the relative rotation between the first connecting part 1 and the shaft 3, in the opening direction, wait for the first connecting part 1 to rotate to the maximum angle ( Figure 9-2 ), the second connecting member 2 and the shaft 3 rotate relative to each other again. In the rotation stage, when the second connecting member 2 and the shaft 3 rotate to the initial angle ( Figure 9-2 ), then the first connecting member 1 and the shaft 3 rotate relative to the initial angle ( Figure 9-1 ). This can be achieved by combining the torque mechanism with the above-mentioned limiting structure combination.

[0031] The first connecting member 1 is connected to the spring tube 4 of the first torsion mechanism. They can be manufactured as a single piece or connected together via a connecting structure. The second connecting member 2 is connected to the second cam 52. They can be manufactured as a single piece or connected together via a connecting structure. The first cam 51 is connected to the shaft 3 in a non-rotatable manner but can slide relative to the shaft, such as by slidingly connecting via a flat portion (reference numeral 31 indicates a flat portion on the shaft). The second cam 52 is connected to the shaft 3 in a rotational manner.

[0032] The opening rotation resistance torque applied by the second one-way torque mechanism between the second connecting part 2 and the shaft 3 is greater than the resistance torque of the first torque mechanism on the first connecting part. This result can be easily achieved by the combination of the above-mentioned torque mechanisms. This can be easily achieved by flexibly adjusting the number or force value of the elastic elements and the clamping area of ​​the reed tube 4 on the shaft. In this embodiment, the elastic element 53 can be a multi-piece disc spring. The elastic element 53 presses the first cam 51 and the second cam 52 to maintain cam control, and between the initial angle between the second connecting part 2 and the shaft 3 and the maximum angle limited by the second rotation angle limiting structure ( Figures 9-2 to 9-3 The cam control structure is in the uphill unstable section 520 and the control cooperation between the second connecting member 2 and the shaft 3 is maintained to the initial position ( Figure 9-2 ) rotation tendency, so that within this angular range, the rotational resistance torque is only sent during the relative rotation process in the opening direction between the second connecting part 2 and the shaft 3, and the relative rotation between the second connecting part 2 and the shaft 3 is in the closing direction, and this torque instead plays a role in assisting rebound.

[0033] To achieve a compact structure suitable for miniaturized applications, a fixed portion 6 is provided near the outer end of the shaft 3. These can be manufactured as a single piece or connected via a connecting structure. The reed tube 3 is positioned on the shaft outside the fixed portion 6, allowing for convenient axial positioning between the retaining spring 7 and the fixed portion 6 using a retaining spring 7. The first cam 51, second cam 52, and elastic element 53 are positioned on the shaft inside the fixed portion 6 and are threadedly connected to the shaft 3 via a nut 8 to provide position limiting and adjust the preset force. The fixed portion 6 is provided with a fixed stop 61 of the first rotation angle limiting structure. The reed tube 4, or a component that rotates synchronously with the reed tube, is provided with a rotating portion 42 of the first rotation angle limiting structure that cooperates with the fixed stop 61. The second cam 52 abuts against the inner side of the fixed portion 6, with the elastic element 53 compressing the first cam 51 and the second cam 52. The rotating portion 42 is further provided with an extended axial extension portion 421 , and the second cam 52 or a component that rotates synchronously with the second cam is provided with a limiting portion 521 . The axial extension portion 421 and the limiting portion 521 cooperate to form a second rotation angle limiting structure.

[0034] Preferably, a rotation angle limiting structure is provided between the first cam 51 and the second cam 52, wherein the rotation angle limiting structure comprises a groove 511 and a convex key 522, and the limiting angle of the limiting structure corresponds to the initial angle ( Figure 7 , Figure 9-2 ) to the second rotation angle ( Figure 8 , Figure 9-3 ).

[0035] When the second connecting member is at an initial angle with the shaft, the first and second cams are in a self-locking state. Both the initial and final engagements of the first and second cams in the second rotational angle range are cam ramp engagements. Because the resistance torque of the elastic element 53 is greater than the resistance torque of the spring tube 4, the cams require greater torque for rotation. Therefore, during low-torque driving within the first rotational angle range, the first and second cams are in a self-locking state. The protrusion 510 of the first cam 51 is locked near the bottom of the cam ramp 520 of the recessed portion of the second cam, maintaining a stable state. When the first connecting member is rotated to the first opening angle, the first cam begins to rotate with the shaft through the engagement of the first rotational angle range limiter structure, and the cams begin to move uphill.

[0036] In this embodiment, the maximum outer diameters of the first and second cams are 3 mm, the rebound torque output by the second torque mechanism exceeds 100 Nmm, the first rotation angle range is between 85-92°, for example, 90°, and the angle range between the initial angle between the second connecting member 2 and the shaft 3 and the angle limited by the second rotation angle limiter is 14-17°, for example, 15°.

[0037] The following is the motion process of this embodiment:

[0038] a. From 0° to 90°, the first connecting component 1 rotates relative to the shaft 3 before the second connecting component 2. When the rotating portion 42 of the first connecting component 1 and the fixed stop portion of the shaft 3 contact each other on the other side, a 90° operating angle is reached. At this point, the second connecting component 2 and the shaft 3 remain stationary due to the action of the second one-way torque mechanism. During this stage, only the first connecting component 1 with the reed tube 4 rotates to provide force; the shaft 3 and the first cam 51 are fixed together by a flat position. Because the friction force on the shaft 3 is less than the force of the cam elastic element 53, the second cam 52 and the shaft 3 do not rotate relative to each other.

[0039] b. 90° to 105°: The first connecting component 1 and the shaft 3 continue to rotate relative to the second connecting component 2. The axial extension portion 421 contacts the limiting portion 521, and the angle between the first connecting component 1 and the second connecting component 2 reaches the limited angle of 105°. Only the first cam 51 compresses the elastic element 53 to provide force; the first connecting component 1 drives the shaft 3 to rotate synchronously, and the second connecting element 2 is considered fixed. The first cam 51 can only move linearly up and down along the axis, squeezing the bottom disc spring to generate force when moving downward; it rotates to the 105° stop point, reaching the maximum angle and stopping downward movement. At the same time, the first cam 51 and the second cam 52 are in a sloped position, which is unstable.

[0040] c. 105°~90°, the first cam 51 and the second cam 52 are in a slope position, which is an unstable state. In this slope position, there is always a tendency to automatically rebound to the 90° direction. Once the external force is withdrawn, the pressure of the disc spring will produce an automatic rebound effect and return to the stable state of 90°.

[0041] In the description of the present invention, it should be understood that terms such as "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right" indicate positions or locations based on those shown in the accompanying drawings. These terms are used solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used solely for simplicity of description and are not intended to indicate or imply relative importance.

[0042] 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 this field within the field of the present invention are included in the protection scope of the present invention.

Claims

1. A segmented hinge for electronic products with a rebound function, comprising a first connecting member, a second connecting member, and a shaft, wherein the first connecting member and the second connecting member are respectively rotatably connected to the shaft; characterized in that The hinge is provided with a torsion mechanism combination, and the torsion mechanism combination includes a first torsion mechanism and a second one-way torsion mechanism. The first torsion mechanism and the second one-way torsion mechanism are independent torsion units. The first torsion mechanism adopts a spring tube to be clamped with the shaft, and the second one-way torsion mechanism adopts an end face cam matching structure, including a first cam, a second cam and an elastic element sleeved on the shaft; the hinge is also provided with a first rotation angle range limiting structure and a second rotation angle limiting structure, the first rotation angle range limiting structure corresponds to the rotation limit of the first connecting component from the initial position to the first opening angle, the second rotation angle limiting structure corresponds to the maximum relative rotation angle between the second connecting component and the shaft, and the relative rotation between the second connecting component and the shaft is greater than the first rotation angle. The connecting member and the shaft are connected for relative rotation; the first connecting member is connected to the spring tube of the first torsion mechanism, and the second connecting member is connected to the second cam; the first cam is non-rotatably connected to the shaft but can slide relative to the shaft, and the second cam is rotatably connected to the shaft; the opening rotation resistance torque applied by the second one-way torsion mechanism between the second connecting member and the shaft is greater than the resistance torque of the first torsion mechanism on the first connecting member; the elastic element presses the first and second cams to maintain cam control, and the cam control structure is in an unstable uphill section between the initial angle between the second connecting member and the shaft and the angle limited by the second rotation angle limit structure, so that the second connecting member has a tendency to rotate between the shafts toward the initial position; A fixing portion is provided near the outer end of the shaft, the reed pipe is provided on the shaft outside the fixing portion, the first cam, the second cam, and the elastic element are provided on the shaft inside the fixing portion, the fixing portion is provided with a fixed limiting portion of a first rotation angle limiting structure, and the reed pipe or a component that rotates synchronously with the reed pipe is provided with a rotating portion of the first rotation angle limiting structure that cooperates with the fixed limiting portion; The second cam abuts against the inner side of the fixing portion, and the elastic element presses the first cam and the second cam; The rotating portion is further provided with an extended axial extension portion, and the second cam or a component that rotates synchronously with the second cam is provided with a limiting portion, and the axial extension portion and the limiting portion cooperate to form a second rotation angle limiting structure.

2. The segmented hinge for electronic products with rebound function as claimed in claim 1, characterized in that A rotation angle limiting structure is provided between the first cam and the second cam. The rotation angle limiting structure includes a groove and a cam. The limiting angle of the limiting structure corresponds to an angle between an initial angle and a second rotation angle between the second connecting component and the shaft.

3. The segmented hinge for electronic products with rebound function as claimed in claim 1, characterized in that When the second connecting component and the shaft are at an initial angle, the first cam and the second cam are in a self-locking state.

4. The segmented hinge for electronic products with rebound function as claimed in claim 1, characterized in that The maximum outer diameters of the first cam and the second cam are no greater than 3.2 mm, and the rebound torque output by the second one-way torque mechanism is no less than 50 Nmm.

5. The segmented hinge for electronic products with rebound function as claimed in claim 1, characterized in that The first rotation angle range is greater than an angle range between an initial angle between the second connecting component and the shaft and an angle limited by the second rotation angle limiting structure.

6. The segmented hinge for electronic products with rebound function as claimed in claim 1, characterized in that The first rotation angle range is 85-92°, and the angle range between the initial angle between the second connecting component and the shaft and the angle limited by the second rotation angle limiting structure is 14-17°.

7. The segmented hinge for electronic products with rebound function as claimed in claim 1, characterized in that The electronic products include head-mounted devices and notebook stands.

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