Rotating shaft mechanism of VR wearable device

Abstract

The utility model provides a rotating shaft mechanism of VR wearable equipment, which comprises a shaft, a first cam, a second cam and an elastic element, the second cam is synchronous with the shaft in the rotating direction and can slide in the axial direction relative to the shaft, the first cam and the shaft can rotate relative to each other, and the first cam and the second cam are pressed and matched by the elastic element; the first cam is synchronous with one of the glasses frame bracket and the glasses leg bracket in the rotating direction, and the shaft is synchronous with the other one of the glasses frame bracket and the glasses leg bracket in the rotating direction; the first cam and the second cam have a control fit from a closing angle to a first opening angle, and also have an opening and springback control fit exceeding the first opening angle. According to the utility model, the structure is simple, the assembly is easy, when being worn, the earphone can rotate to exceed the opening angle corresponding to proper wearing and rebound to clamp the wearing part, the experience feeling is better, and the requirements of small-size design and wire passing on the basis can be met.

Description

Technical Field

[0001] The utility model relates to a rotating shaft mechanism of a VR wearable device. Background Art

[0002] In the past, for the rotating shaft mechanism of a VR wearable device, a disc spring was used to provide pressure to a friction component or a coiled round was used to clamp a shaft to provide a rotational force value. However, this structure does not have a rebound clamping function, and the user experience still needs to be improved. Content of the Utility Model

[0003] The purpose of the utility model is to provide a rotating shaft mechanism of a VR wearable device, which has a simple structure and can rotate beyond the corresponding opening angle for wearing and then rebound to clamp the wearing part when worn, providing a better user experience. To this end, the utility model adopts the following technical solutions:

[0004] A rotating shaft mechanism of a VR wearable device, the VR wearable device includes a frame bracket and a temple bracket, characterized in that the rotating shaft mechanism includes a shaft, a first cam, a second cam and an elastic element. The elastic element, the first cam and the second cam are all sleeved on the shaft. Among them, the second cam is synchronized with the shaft in the rotation direction and can slide axially relative to the shaft. The first cam and the shaft can rotate relative to each other, and the first cam and the second cam are pressed and matched by the elastic element; the first cam is synchronized with one of the frame bracket and the temple bracket in the rotation direction, and the shaft is synchronized with the other of the frame bracket and the temple bracket in the rotation direction; there is a control cooperation from a closed angle to a first opening angle between the first cam and the second cam, and there is also an opening and rebound control cooperation after exceeding the first opening angle.

[0005] On the basis of adopting the above technical solutions, the utility model can also adopt the following further technical solutions, or combine the use of these further technical solutions.

[0006] The opening and rebound control cooperation is a section of uphill cooperation.

[0007] Before the closed angle, the first cam and the second cam have a stop cooperation to prevent further relative rotation in the closing direction.

[0008] The elastic element is a helical spring, the diameter of which is smaller than the outer diameters of the first cam and the second cam. The first cam is located at the first end of the shaft, and the helical spring presses the second cam to be close to the first end of the shaft.

[0009] One of the frame bracket and the temple bracket is provided with an axial through hole for the shaft to pass through. The second cam is located in the axial through hole and is synchronized with the shaft in the rotation direction and can slide axially relative to the shaft through a flat position fit.

[0010] The first cam is connected to one of the frame bracket and the temple bracket through a connection structure.

[0011] One of the frame bracket and the temple bracket is the frame bracket, and the other is the temple bracket. The temple bracket is provided with a first-end connecting ear and a second-end connecting ear. The frame bracket is provided with an axial through-hole, and the part where the axial through-hole is provided is stuck between the first-end connecting ear and the second-end connecting ear. A counterbore capable of accommodating the first cam is provided outside the first-end connecting ear. The connecting hole provided on the first-end connecting ear is larger in diameter than the connecting hole provided on the second-end connecting ear. The second cam is located in the axial through-hole, and one end of the second cam is inserted into the connecting hole of the first-end connecting ear to cooperate with the first cam. A limiting structure is provided at the first end of the shaft. The first cam is axially limited by the limiting structure and the counterbore of the first-end connecting ear, and the first cam is synchronized with the frame bracket in the rotational direction through a flat position fit; the second cam is synchronized with the shaft in the rotational direction through a flat position fit and can slide axially relative to the shaft. The second end of the shaft passes through the connecting hole of the second-end connecting ear and is connected with a snap ring to axially position the shaft. The shaft and the connecting hole of the second-end connecting ear are in flat position fit.

[0012] A limiting structure for setting a maximum opening angle is provided for the opening and rebounding control cooperation.

[0013] The opening and rebounding control cooperation is a section of uphill cooperation, and the limiting structure is a stop at the top of the uphill on the first cam.

[0014] Due to the adoption of the technical solution of the present utility model, the structure of the present utility model is simple and easy to assemble. When worn, it can be rotated to an opening angle exceeding the corresponding suitable wearing angle and rebound to clamp the wearing part, providing a better experience. And it can meet the requirements of small volume design and wire passing on this basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the embodiment provided by the present utility model.

[0016] Figure 2 It is a cross-sectional view of the embodiment provided by the present utility model.

[0017] Figure 3 、 Figure 4 、 Figure 5 They are respectively schematic diagrams of the embodiment of the present utility model when it is at the closed angle, at the first opening angle, and at the maximum opening angle when observed from a top-down perspective.

[0018] Figure 6 、 Figure 7 、 Figure 8Schematic diagrams showing the cooperation between the first cam and the second cam of the present utility model embodiment at the closing angle, at the first opening angle when opened, and at the maximum opening angle when opened, respectively. Detailed implementation manners

[0019] Referring to the attached drawings. The VR wearable device includes a frame bracket 100 and a temple bracket 200.

[0020] The rotating shaft mechanism of the VR wearable device provided by the present utility model includes a shaft 3, a first cam 1, a second cam 2, and an elastic element 4. The elastic element 4, the first cam 1, and the second cam 2 are all sleeved on the shaft 3. Among them, the second cam 2 is synchronous with the shaft 3 in the rotation direction and can slide axially relative to the shaft 3. The first cam 1 and the shaft 3 can rotate relative to each other, and the first cam 1 and the second cam 2 are pressed and fitted by the elastic element 4; the first cam 1 is synchronous with the frame bracket in the rotation direction, and the shaft 3 is synchronous with the temple bracket in the rotation direction;

[0021] There is a control cooperation between the first cam 1 and the second cam 2 from the closing angle to the first opening angle, and there is also an opening and rebounding control cooperation after exceeding the first opening angle.

[0022] Such as Figure 4As described above, the first cam 1 provides a groove 11 corresponding to the closing angle, which is the angle at which the temple holder 200 rotates relative to the frame leg 100 until the temples are folded. The first cam also provides a groove 12 corresponding to the first opening angle, which can correspond to the minimum opening angle that is used more frequently, supplemented as the angle after rotating 90° relative to the closing angle. As needed, the size of the first opening angle can also be adjusted. Between the groove 11 and the groove 12 of the first cam, there are gentle uphill and downhill slopes 13, so that the rotation operation between the closing angle and the first opening angle is relatively easy. The first cam 1 provides a relatively steep uphill slope 14 corresponding to the opening and rebound control cooperation, and this uphill slope 14 can be the rear groove wall of the groove 12 with a certain slope but steeper than the uphill and downhill slopes 13. The second cam 2 is provided with a bump 21 that cooperates with the cam surface of the first cam 1 including the above features. When the temple is pulled beyond the first opening angle and worn on the human head and then released, the temple (temple holder 1) will rebound under the control of the uphill slope 14 to the wearing position where the temple clamps the human head. For this opening and rebound control cooperation, a limiting structure for the maximum opening angle can be set to prevent over-positioning, and this limiting structure can be a stop 16 at the top of the uphill slope 14 on the first cam 1. This maximum angle can be about 105°, or adjusted as needed. In addition, for the cam surface of the first cam 1, if needed, a groove can also be added between the groove 11 and the groove 12.

[0023] Before the closing angle, the first cam 1 has a stop that blocks further relative rotation in the closing direction, and this stop can be a steep slope 15 that serves as the front groove wall of the groove 11, and the bump 21 cooperates with the steep slope 15 for stopping.

[0024] The elastic element 4 is a helical spring, whose diameter is smaller than the outer diameters of the first cam 1 and the second cam 2. The first cam 1 is located at the first end of the shaft 3, and the helical spring presses the second cam 2 to be close to the first end of the shaft 1. Thus, on this side of the helical spring, there can be more space for wire passing.

[0025] The frame holder 100 is provided with an axial through hole 101 for the shaft 3 to pass through. The second cam 2 is located in the axial through hole 101 and is synchronized with the shaft 3 in the rotational direction through a flat position fit and can slide axially relative to the shaft 3. The first cam 1 is connected to the frame holder 100 through a connecting structure. In this embodiment, the following method can be adopted to have a more compact structure and facilitate reducing the size of the rotating shaft mechanism:

[0026] The temple bracket 200 is provided with a first-end connecting ear 201 and a second-end connecting ear 202. The frame bracket 100 is provided with an axial through hole 101, and the part 102 where the axial through hole 101 is provided is clamped between the first-end connecting ear 201 and the second-end connecting ear 202. A counterbore 203 capable of accommodating the first cam 1 is provided on the outer side of the first-end connecting ear 201. The diameter of the connecting hole 204 provided on the first-end connecting ear 201 is larger than that of the connecting hole 205 provided on the second-end connecting ear 202. The second cam 2 is located in the axial through hole, and one end of the second cam 2 is inserted into the connecting hole 204 of the first-end connecting ear 201 to cooperate with the first cam 1. A limiting structure 31 is provided at the first end of the shaft 3. The first cam 1 is axially limited by the limiting structure 31 and the counterbore 203 of the first-end connecting ear 201, and the first cam 1 is synchronized with the frame bracket 100 in the rotational direction through flat position fitting; the second cam is synchronized with the shaft 3 in the rotational direction through flat position fitting and can slide axially relative to the shaft 3. The second end of the shaft 3 passes through the connecting hole 205 of the second-end connecting ear 202 and is connected with a snap ring 5 to axially position the shaft 3. The shaft 3 and the connecting hole 205 of the second-end connecting ear 202 are in flat position fitting. A counterbore 206 is provided on the outer side of the second-end connecting ear 202 to accommodate the second end of the shaft 3 and the snap ring 5. Decorative covers 207 and 208 are provided at the orifices of the counterbore 203 of the first-end connecting ear 201 and the counterbore 206 of the second-end connecting ear 202.

[0027] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, the terms describing the orientation or positional relationship in the present utility model are only used for exemplary illustration and cannot be understood as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood by combining the drawings and according to the specific situation.

[0028] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "provided", "clamped", and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific situation.

[0029] The above are only specific embodiments of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the protection scope of the present utility model.

Claims

1. A rotating shaft mechanism of a VR wearable device, the VR wearable device comprising a frame bracket and a temple bracket, characterized in that The rotating shaft mechanism includes a shaft, a first cam, a second cam, and an elastic element. The elastic element, the first cam, and the second cam are all sleeved on the shaft. Among them, the second cam is synchronized with the shaft in the rotational direction and can slide axially relative to the shaft. The first cam and the shaft can rotate relative to each other, and the first cam and the second cam are pressed and fitted by the elastic element; the first cam is synchronized with one of the frame bracket and the temple bracket in the rotational direction, and the shaft is synchronized with the other of the frame bracket and the temple bracket in the rotational direction; There is a control fit between the first cam and the second cam from the closed angle to the first opening angle, and there is also an opening and rebound control fit after exceeding the first opening angle; One of the frame bracket and the temple bracket is the frame bracket, and the other is the temple bracket. The temple bracket is provided with a first end connecting ear and a second end connecting ear. The frame bracket is provided with an axial through hole, and the part where the axial through hole is provided is stuck between the first end connecting ear and the second end connecting ear. A counterbore capable of accommodating the first cam is provided outside the first end connecting ear. The connecting hole provided by the first end connecting ear is larger in diameter than the connecting hole provided by the second end connecting ear. The second cam is located in the axial through hole, and one end of the second cam is inserted into the connecting hole of the first end connecting ear to cooperate with the first cam. A limiting structure is provided at the first end of the shaft. The first cam is axially limited by the limiting structure and the counterbore of the first end connecting ear, and the first cam is synchronized with the frame bracket in the rotational direction through a flat position fit; the second cam is synchronized with the shaft in the rotational direction through a flat position fit and can slide axially relative to the shaft. The second end of the shaft passes through the connecting hole of the second end connecting ear and is connected with a circlip to axially position the shaft. The shaft and the connecting hole of the second end connecting ear are in flat position fit; A limiting structure for the maximum opening angle is provided for the opening and rebound control fit. The opening and rebound control fit is an uphill fit, and the limiting structure for the maximum opening angle is a stop at the top of the uphill on the first cam.

2. The rotating shaft mechanism of a VR wearable device according to claim 1, characterized in that Before the closed angle, the first cam and the second cam have a stop fit that blocks further relative rotation in the closing direction.

3. The rotating shaft mechanism of a VR wearable device according to claim 1, characterized in that The elastic element is a helical spring, whose diameter is smaller than the outer diameters of the first cam and the second cam. The first cam is located at the first end of the shaft, and the helical spring presses the second cam to be close to the first end of the shaft.

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