US-20260126613-A1 - VIRTUAL REALITY GLASSES

US20260126613A1US 20260126613 A1US20260126613 A1US 20260126613A1US-20260126613-A1

Abstract

Embodiments of the present disclosure provide VR glasses including a bracket body, a first mounting hole and a second mounting hole, and a first lens module and a second lens module respectively mounted in the first mounting hole and the second mounting hole. The VR glasses include a driving module. The driving module includes a frame fixed to the bracket body, a driving unit fixed to one side of the frame, a gear member rotatably disposed in the frame and torque-transmissively connected to the driving unit, a first rack meshed with the gear member, and a second rack meshed with the gear member. The VR glasses can automatically and synchronously adjust the interpupillary distance, and has high adjustment accuracy, small volume occupation, high driving efficiency, high reliability, and good user experience.

Inventors

Jinguo Wu
Sensen Yang
Feng Yan
Junsheng Wang

Assignees

AAC MICROTECH (CHANGZHOU) CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20250425

Claims (10)

1 . Virtual reality (VR) glasses, comprising a bracket body, a first mounting hole and a second mounting hole penetrating through the bracket body and spaced apart from each other, and a first lens module and a second lens module respectively mounted in the first mounting hole and the second mounting hole, wherein a transverse aperture of the first mounting hole is greater than a diameter of the first lens module, and a transverse aperture of the second mounting hole is greater than a diameter of the second lens module; the VR glasses further comprise a driving module fixed to the bracket body and located between the first lens module and the second lens module, and the driving module is configured to drive the first lens module and the second lens module to synchronously move towards each other or away from each other to realize interpupillary distance adjustment; wherein the driving module comprises a frame fixed to the bracket body, a driving unit fixed to one side of the frame, a gear member rotatably disposed in the frame and torque-transmissively connected to the driving unit, a first rack meshed with the gear member, and a second rack meshed with the gear member, wherein the first rack is configured to oppose the second rack, and the first rack and the second rack are respectively in sliding connection with the frame; an end of the first rack away from the gear member is fixed to the first lens module, and an end of the second rack away from the gear member is fixed to the second lens module.
2 . The VR glasses according to claim 1 , wherein the first rack and the second rack are parallel to each other and perpendicular to an axial direction of the driving unit, and the first rack and the second rack are configured to move at a same speed.
3 . The VR glasses according to claim 1 , wherein the VR glasses further comprise a first flexible damping mechanism and a second flexible damping mechanism opposing each other; wherein an end of the first flexible damping mechanism close to the driving module is hinged to the first rack, and an end of the first flexible damping mechanism away from the driving module is fixed to the first lens module; and an end of the second flexible damping mechanism close to the driving module is hinged to the second rack, and an end of the second flexible damping mechanism away from the driving module is fixed to the second lens module.
4 . The VR glasses according to claim 3 , wherein the first flexible damping mechanism comprises a first hinge portion, a first limiting slot recessed at an end of the first hinge portion away from the first rack, a first guide rod disposed in the first limiting slot, a first spring and a second spring sleeved on the first guide rod, and a first nut fixed to an end of the first guide rod away from the first rack; wherein the first guide rod is in sliding connection with the first lens module, and the first nut is located on a side of the first lens module away from the frame; and the first spring is located in the first limiting slot, and the second spring is located between the first hinge portion and the first lens module; the second flexible damping mechanism comprises a second hinge portion, a second limiting slot recessed at an end of the second hinge portion away from the second rack, a second guide rod disposed in the second limiting slot, a third spring and a fourth spring sleeved on the second guide rod, and a second nut fixed to an end of the second guide rod away from the second rack; the second guide rod is in sliding connection with the second lens module, and the second nut is located on a side of the second lens module away from the frame; and the third spring is located in the second limiting slot, and the fourth spring is located between the second hinge portion and the second lens module.
5 . The VR glasses according to claim 4 , wherein the first lens module comprises a first lens barrel disposed in the first mounting hole, a first lens group fixed inside the first lens barrel, and a first connecting portion protruding from an outer wall of the first lens barrel; a first guide through hole is formed in the first connecting portion, the first guide rod is disposed in the first guide through hole, the second spring is disposed between the first hinge portion and the first connecting portion, and the first nut is disposed on a side of the first connecting portion away from the frame and configured to abut against the first connecting portion; the second lens module comprises a second lens barrel disposed in the second mounting hole, a second lens group fixed inside the second lens barrel, and a second connecting portion protruding from an outer wall of the second lens barrel; a second guide through hole is formed in the second connecting portion, the second guide rod is disposed in the second guide through hole, the fourth spring is disposed between the second hinge portion and the second connecting portion, and the second nut is disposed on a side of the second connecting portion away from the frame and configured to abut against the second connecting portion.
6 . The VR glasses according to claim 1 , wherein the frame comprises a frame body fixed to one side of the bracket body, an extension portion extending from one side of the frame body close to the first lens module, a through hole penetrating through the extension portion, a groove recessed from one side of the frame body close to the bracket body towards a direction away from the bracket body, and a first sliding slot and a second sliding slot respectively penetrating through the frame body and communicating with the groove; the driving unit is fixed in the through hole, the gear member is disposed in the groove, and the first rack and the second rack are respectively disposed in the first sliding slot and the second sliding slot.
7 . The VR glasses according to claim 6 , wherein the VR glasses further comprise a multi-stage planetary gearbox, wherein an input end of the multi-stage planetary gearbox is fixedly connected to the driving unit, and an output end of the multi-stage planetary gearbox is fixedly connected to the gear member; and the multi-stage planetary gearbox is disposed in the through hole.
8 . The VR glasses according to claim 7 , wherein the gear member comprises a rotating shaft fixed to the output end of the multi-stage planetary gearbox and a gear structure fixedly sleeved on the rotating shaft; wherein the gear structure is located in the groove, and the gear structure is configured to respectively mesh with the first rack and the second rack.
9 . The VR glasses according to claim 8 , wherein the VR glasses further comprise a steel sheet, and the frame body is provided with a first counterbore corresponding to an end of the rotating shaft away from the driving unit; wherein a side of the frame body away from the bracket body is recessed to form a mounting slot, the steel sheet is inserted into the mounting slot, the rotating shaft is disposed to extend through the first counterbore, and an end of the rotating shaft close to the steel sheet is configured to abut against the steel sheet.
10 . The VR glasses according to claim 9 , wherein the VR glasses further comprise a bearing, wherein the bearing is fixed in the first counterbore, an end of the rotating shaft is fixed in the bearing, and the other end of the rotating shaft is fixed to the output end of the driving unit.

Description

CROSS REFERENCE TO RELATED APPLICATIONS The present application is a continuation of PCT patent application No. PCT/CN2024/129399, entitled “VIRTUAL REALITY GLASSES”, filed on November 1, 2024, which is incorporated herein by reference to its entirety. TECHNICAL FIELD The present disclosure relates to the technical field of virtual reality (VR), and in particular to VR glasses. BACKGROUND VR head-mounted display device is a product that uses simulation technology, computer graphics, human interface technology, multimedia technology, sensing technology, network technology, and other technologies. It is a new means of human-machine interaction created with the help of computers and the latest sensor technology. VR glasses not only allow every enthusiast to experience with surprise and joy, but also fascinate them deeply due to the unknown of its birth and prospects. The VR glasses in the related technology include a bracket body, a left lens module and a right lens module arranged on the bracket body, an adjustment mechanism for adjusting the interpupillary distance of the left lens module and the right lens module, and a head-mounted structure fixed to the bracket body. The adjustment mechanism includes a gear transmission component and two racks that are torque-transmissively connected to the gear transmission component. The two racks are connected to the left and right lens modules, respectively. The head-mounted structure is placed on the user's head so that the left and right eyes correspond to the left and right lens modules, respectively. By driving the adjustment mechanism to move the two racks, the interpupillary distance between the left and right lens modules can be adjusted, improving the VR experience. The VR glasses in the related technology adjust the interpupillary distance by driving the adjustment mechanism with a motor to move the left and right lens modules. However, the VR glasses in the related technology arrange the teeth of the two racks in the same direction and mesh with two output gears to achieve transmission. That is, one output rack meshes with one output gear to achieve transmission, driving the two racks to mesh with each other to achieve transmission. Due to the additional reversing transmission, there are disadvantages such as low space utilization, complex mechanisms, and inconsistent rack push-out forces, resulting in poor reliability of VR glasses. Therefore, it is desirable to provide new VR glasses to solve the above technical problems. SUMMARY The technical problem to be solved by the present disclosure is to provide VR glasses that can automatically and synchronously adjust the interpupillary distance, and has high adjustment accuracy, small volume occupation, high reliability, and good user experience. To solve the above technical problem, embodiments of the present disclosure provide VR glasses including a bracket body, a first mounting hole and a second mounting hole penetrating through the bracket body and spaced apart from each other, and a first lens module and a second lens module respectively mounted in the first mounting hole and the second mounting hole, where a transverse aperture of the first mounting hole is greater than a diameter of the first lens module, and a transverse aperture of the second mounting hole is greater than a diameter of the second lens module. The VR glasses include a driving module fixed to the bracket body and located between the first lens module and the second lens module, and the driving module is configured to drive the first lens module and the second lens module to synchronously move towards each other or away from each other to realize interpupillary distance adjustment. The driving module includes a frame fixed to the bracket body, a driving unit fixed to one side of the frame, a gear member rotatably disposed in the frame and torque-transmissively connected to the driving unit, a first rack meshed with the gear member, and a second rack meshed with the gear member, where the first rack is configured to oppose the second rack, and the first rack and the second rack are respectively in sliding connection with the frame. An end of the first rack away from the gear member is fixed to the first lens module, and an end of the second rack away from the gear member is fixed to the second lens module. In some embodiments, the first rack and the second rack are parallel to each other and perpendicular to an axial direction of the driving unit, and the first rack and the second rack are configured to move at a same speed. In some embodiments, the VR glasses further include a first flexible damping mechanism and a second flexible damping mechanism opposing each other, where an end of the first flexible damping mechanism close to the driving module is hinged to the first rack, and an end of the first flexible damping mechanism away from the driving module is fixed to the first lens module; and an end of the second flexible damping mechani