A VR glasses

Abstract

The application relates to the field of VR devices, in particular to a VR glasses, which comprises a left lens assembly, a right lens assembly, a framework and a power assembly arranged on the framework; the left lens assembly and the right lens assembly are both slidingly connected with the framework and can move towards or away from each other along a first direction; the power assembly comprises a trigger and a gear and rack mechanism, the gear and rack mechanism comprises a driving gear and two racks which are respectively fixedly connected with the left lens assembly and the right lens assembly; the two racks are arranged in parallel, and the meshing tooth surfaces thereof are opposite to each other; the driving gear is meshed with the opposite tooth surfaces of the two racks at the same time, so that when the driving gear rotates, the two racks can be synchronously driven to move linearly in opposite directions. The application omits the expensive micro motor, sensor, special driving chip and complex control program, and the material cost is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of VR device technology, and more particularly to a VR headset. Background Technology

[0002] The IPD (Interpupillary Distance) adjustment function of VR headsets is crucial. By precisely matching the device's IPD with the user's actual interpupillary distance, a clear and unblurred image can be ensured, effectively reducing eye fatigue and headaches caused by prolonged use. Appropriate IPD settings can also enhance the stereoscopic and depth perception of virtual scenes, thereby significantly improving the immersive experience.

[0003] In pursuit of automation, many VR headsets currently employ motor-driven solutions for IPD (interpupillary distance) adjustment, necessitating the introduction of a corresponding hardware and software ecosystem. On the hardware side, this requires adding motor drive chips, sensors, and supporting circuitry; on the software side, it necessitates developing corresponding control algorithms, user interfaces, and system integration. This undoubtedly increases technical complexity, leading to longer development cycles, significantly higher human and financial investment, and ultimately, higher overall R&D costs. Summary of the Invention

[0004] This application provides a VR headset designed to address the high cost of interpupillary distance adjustment functionality in existing VR headsets.

[0005] This utility model provides a VR headset, including a left lens assembly, a right lens assembly, a frame, and a power assembly disposed on the frame; The left lens assembly and the right lens assembly are both slidably connected to the frame and can move toward or away from each other along a first direction; The power assembly includes a trigger and a gear and rack mechanism, wherein the gear and rack mechanism includes a drive gear and two racks that are respectively fixedly connected to the left lens assembly and the right lens assembly; The two racks are arranged in parallel and their meshing tooth surfaces face each other; the driving gear meshes with the opposing tooth surfaces of the two racks simultaneously, so that when the driving gear rotates, it can synchronously drive the two racks to move in opposite directions in a straight line.

[0006] Optionally, the power assembly further includes a gear set, which includes a plurality of sequentially meshing transmission gears, each of which is rotatably connected to the frame; The first transmission gear in the gear set is connected to the trigger and is driven to rotate by the trigger. The trigger is rotatably mounted on the frame. The end drive gear in the gear set meshes with the drive gear to transmit power to the drive gear.

[0007] Optionally, it also includes multiple sliding components, wherein the left lens assembly and the right lens assembly are respectively connected to the skeleton through at least one set of the sliding components; The sliding assembly includes a slide rail and a slider. The slide rail is fixed to the frame and extends in a direction parallel to the first direction. The slider is connected to the corresponding left or right lens assembly.

[0008] Optionally, the frame includes a motherboard bracket, a knob upper bracket, a knob support, and a gear bracket. The gear bracket and the knob upper bracket are respectively connected to opposite sides of the motherboard bracket. The gear bracket has a cavity. The gear bracket and the motherboard bracket enclose a mounting cavity, and the gear set is disposed in the mounting cavity. The two sides of the knob bracket are bent toward the motherboard bracket and connected to the motherboard bracket; The middle part of the upper bracket of the knob and the middle part of the main board bracket are spaced apart. The knob support has a notch. The knob support and the upper bracket of the knob enclose a unidirectional opening receiving cavity. A part of the trigger is located inside the receiving cavity, and the other part of the trigger is located outside the receiving cavity.

[0009] Optionally, the driving gear includes a transition section, a first gear end, and a second gear end. The first gear end meshes with the end drive gear, and the second gear end meshes with the rack. The first gear end and the second gear end are located at opposite ends of the transition section.

[0010] Optionally, the gear bracket is provided with a through hole, the through hole is connected to the mounting cavity, the transition section passes through the through hole, the first gear end is located inside the receiving cavity, and the second gear end is located outside the receiving cavity.

[0011] Optionally, it also includes a circuit board mounted on the motherboard bracket, the circuit board being located between the motherboard bracket and the knob bracket.

[0012] Optionally, the trigger includes a knob and a drive rod; The knob includes a rotating disk and rotating shafts fixed at opposite ends of the rotating disk; each of the rotating shafts passes through the knob support to rotatably connect to the knob support; The two ends of the transmission rod are respectively connected to the first transmission gear in the gear set and the knob, and the transmission rod passes through the circuit board and the main board bracket.

[0013] Optionally, it may also include a first sealing assembly, which includes a first sealing ring and a second sealing ring; One of the knob's pivots is the first pivot, and the other pivot is the second pivot; The first rotating shaft has a first annular groove on its middle outer wall, and the second rotating shaft has a second annular groove on its middle outer wall. The first sealing ring is disposed in the first annular groove so that the first sealing ring and the upper bracket of the knob are sealed together; The second sealing ring is disposed in the second annular groove so that the second sealing ring and the knob support are sealed together.

[0014] Optionally, the motherboard bracket is provided with a first cylinder and a second cylinder arranged coaxially, the two ends of the first cylinder are respectively connected to the motherboard bracket and the second cylinder, and the diameter of the second cylinder is smaller than that of the first cylinder; the first gear end is provided with a blind hole, and the first gear end is covered outside the first cylinder and the second cylinder through the blind hole, so that the first gear end can rotate around the first cylinder. The second cylindrical outer sleeve is provided with a third sealing ring, the outer wall of which abuts against the inner wall of the blind hole.

[0015] This invention uses a trigger to drive a drive gear. When the drive gear rotates, it synchronously drives the left and right racks to move in opposite directions—one to the left and the other to the right. This direct motion conversion allows the left and right lens assemblies, which are fixedly connected to the racks, to move precisely towards (closer to) or away from (farther from) each other, thus achieving continuous adjustment of interpupillary distance. This ensures flexible adaptation to the interpupillary distances of different users, eliminating the need for expensive micromotors, sensors, dedicated drive chips, and complex control programs, significantly reducing material costs. Attached Figure Description

[0016] Figure 1 This is an overall internal schematic diagram of a VR headset provided in one embodiment of this application; Figure 2 This is a partial exploded view of a VR headset provided in an embodiment of this application; Figure 3 This is a partial exploded view of a VR glasses embodiment provided in this application; Figure 4 This is an exploded structural diagram of the skeleton of VR glasses provided in one embodiment of this application.

[0017] Explanation of reference numerals in the attached figures: 11. Left lens assembly; 12. Right lens assembly; 2. Frame; 21. Main board bracket; 22. First cylinder; 23. Second cylinder; 22. Knob upper bracket; 23. Knob support; 24. Gear bracket; 25. Mounting cavity; 26. Receiving cavity; 3. Trigger; 31. Knob; 32. Transmission rod; 33. Rotating disk; 34. First rotating shaft; 35. Second rotating shaft; 36. First annular groove; 4. Drive gear; 41. Transition section; 42. First gear end; 43. Second gear end; 51. First sealing ring; 53. Second sealing ring; 53. Third sealing ring; 6. Rack; 7. Gear set; 71. Transmission gear; 81. Slide rail; 82. Slider; 9. Circuit board. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] Reference Figures 1 to 4 This utility model provides a VR headset, including a left lens assembly 11, a right lens assembly 12, a frame 2, and a power assembly disposed on the frame 2; the left lens assembly 11 and the right lens assembly 12 are slidably connected to the frame 2 and can move towards or away from each other along a first direction; the power assembly includes a trigger 3 and a gear and rack mechanism, the gear and rack mechanism including a drive gear 4 and two racks 6 respectively fixedly connected to the left lens assembly 11 and the right lens assembly 12; the two racks 6 are arranged in parallel and their meshing tooth surfaces are opposite to each other; the drive gear 4 meshes with the opposite tooth surfaces of the two racks 6 at the same time, so that when the drive gear 4 rotates, it can synchronously drive the two racks 6 to move linearly in opposite directions.

[0020] Reference Figures 2 to 4 The VR glasses described in this embodiment utilize a sophisticated and efficient rack and pinion transmission system to adjust interpupillary distance (IPD). The core working principle is as follows: when the user rotates the trigger 3 (e.g., knob 31), power is transmitted to an active gear 4. This active gear 4 simultaneously meshes with two parallel racks 6, and crucially, the meshing tooth surfaces of these two racks 6 are opposite to each other. Therefore, when the active gear 4 rotates, it synchronously drives the left and right racks 6 to move linearly in opposite directions, one rack 6 to the left and the other to the right. This direct motion conversion allows the left lens assembly 11 and the right lens assembly 12, which are fixedly connected to the racks 6, to move precisely towards (closer to) or away from (farther from) each other, thereby achieving continuous IPD adjustment. This ensures flexible adaptation to different users' interpupillary distances, providing a more comfortable and immersive visual experience.

[0021] This purely mechanical adjustment scheme offers significant advantages over electric schemes. First, its structure is simple and reliable. The entire mechanism is based on the classic gear transmission principle, ensuring direct and predictable power transmission between moving parts. This avoids the potential failure risks associated with electronic components, resulting in a long service life and high stability. Second, it is highly cost-effective, eliminating the need for expensive micromotors, sensors, dedicated driver chips, and complex control programs. This not only significantly reduces material costs but also simplifies product structure design and production assembly processes, making it highly suitable for mass production. Finally, it provides an excellent user experience. The 31-position manual knob adjustment gives users direct control and clear tactile feedback, making the interpupillary distance adjustment process intuitive and predictable, enhancing the product's quality and user interactivity.

[0022] Reference Figure 3 and Figure 4 In one embodiment, the power assembly further includes a gear set 7, which includes a plurality of sequentially meshing transmission gears, each transmission gear being rotatably connected to the frame 2; the first transmission gear in the gear set 7 is connected to the trigger 3 and is driven to rotate by the trigger 3, the trigger 3 being rotatably mounted on the frame 2; the last transmission gear in the gear set 7 meshes with the drive gear 4 and is used to transmit power to the drive gear 4.

[0023] Without using gear set 7, the active gear 4 driving the interpupillary distance adjustment would have to be directly driven by the trigger 3 (such as knob 31) located at the edge of the device. However, due to the stringent requirements of the optical design, the left lens assembly 11 and the right lens assembly 12 must be symmetrically located in the central area of ​​the VR glasses, which strictly limits the axial position of the active gear 4, which meshes directly with them, to the center of the device. If the trigger 3 were also forcibly placed in the center of the face, it would not only disrupt the overall aesthetics of the product but also severely hinder the user's wearing comfort, making adjustment extremely inconvenient.

[0024] By introducing a gear set 7 consisting of a head drive gear, an end drive gear, and several intermediate drive gears, we have successfully constructed a flexible "power transmission chain". This transmission chain can accurately transmit the rotational motion applied by the user at the most ergonomic position (such as the side of the equipment) across a spatial distance to the drive gear 4 located in the middle through the sequential meshing of multiple small gears in the gear set 7.

[0025] This design offers multiple benefits: First, it ensures that the core active gear 4 is securely centered in the VR glasses, guaranteeing the symmetry and accuracy of interpupillary distance adjustment. Second, it frees the user-operated trigger 3 from the crowded center, allowing it to be placed in a more convenient and less obtrusive location such as the frame, greatly improving ease of operation and user experience. Finally, the use of multiple small gears for transmission makes the entire transmission structure very compact, making full use of the valuable internal space of the device and achieving a perfect integration of complex functions within a limited volume.

[0026] In one embodiment, the VR glasses also include multiple sliding components. The left lens assembly 11 and the right lens assembly 12 are respectively connected to the frame 2 through at least one set of sliding components. The sliding components include a slide rail 81 and a slider 82. The slide rail 81 is fixed on the frame 2 and the extension direction of the slide rail 81 is parallel to the first direction. The slider 82 is connected to the corresponding left lens assembly 11 or right lens assembly 12.

[0027] The slide rail 81 is fixed to the frame 2 and parallel to the pupillary distance adjustment direction (i.e., the first direction). This establishes a precise and stable motion reference axis for the movement of the left and right lens assemblies 11 and 12, ensuring that they always maintain linear motion when sliding towards or away from each other, effectively preventing deviation, jamming, or shaking that may occur during adjustment. Secondly, the direct connection between the slider 82 and the lens assemblies 11 and 12 smoothly converts the driving force generated by the rack and pinion transmission system into linear displacement of the lenses. Its low-friction characteristics ensure a smooth adjustment process and a comfortable feel. In summary, this sliding assembly not only ensures the accuracy and reliability of pupillary distance adjustment but also improves the mechanical stability and service life of the entire adjustment system by optimizing the coordination of the kinematic pairs, thereby enhancing the overall user experience of the product.

[0028] Reference Figure 2 and Figure 4 In one embodiment, the frame 2 includes a mainboard bracket 21, a knob upper bracket 22, a knob support 23, and a gear bracket 24. The gear bracket 24 and the knob upper bracket 22 are respectively connected to opposite sides of the mainboard bracket 21. The gear bracket 24 has a cavity. The gear bracket 24 and the mainboard bracket 21 enclose a mounting cavity 25, and the gear set 7 is disposed in the mounting cavity 25. The two sides of the knob upper bracket 22 are bent toward the mainboard bracket 21 and connected to the mainboard bracket 21. The middle part of the knob upper bracket 22 and the middle part of the main board bracket 21 are spaced apart. The knob support 23 has a notch. The knob support 23 and the knob upper bracket 22 surround a one-way opening receiving cavity 26. A part of the trigger 3 is located inside the receiving cavity 26, and the other part of the trigger 3 is located outside the receiving cavity 26.

[0029] The mounting cavity 25 formed by the gear bracket 24 and the main board bracket 21 provides a relatively sealed protective space for the gear set 7, which not only effectively prevents dust and impurities from entering the transmission system, but also ensures the stability of the meshing transmission of multiple gears. At the same time, the one-way opening receiving cavity 26 jointly constructed by the knob bracket 22 and the knob support 23 provides a safe mounting base for the trigger 3, while also retaining the user operation interface.

[0030] The connection method of the knob bracket 22 bending towards the motherboard bracket 21 on both sides forms a stable support structure that can effectively withstand operating torque; while its spacing from the middle of the motherboard bracket 21 creates valuable internal space while ensuring structural strength, providing a location for the installation of components such as the circuit board 9.

[0031] Reference Figure 3 and Figure 4 In one embodiment, the driving gear 4 includes a transition section 41, a first gear end 42 and a second gear end 43. The first gear end 42 meshes with the end drive gear, and the second gear end 43 meshes with the rack 6. The first gear end 42 and the second gear end 43 are located at opposite ends of the transition section 41.

[0032] Specifically, the gear bracket 24 is provided with a through hole 211, which connects to the mounting cavity 25. The transition section 41 passes through the through hole 211, the first gear end 42 is located inside the receiving cavity 26, and the second gear end 43 is located outside the receiving cavity 26.

[0033] In this embodiment, the driving gear 4 is divided into three functional segments: a first gear end 42, a transition section 41, and a second gear end 43, creatively constructing a "transmission bridge" connecting different functional cavities. The transition section 41, as the core connecting shaft, passes through the through hole 211 of the gear bracket 24, precisely positioning the first gear end 42 within the receiving cavity 26 to mesh with the gear set 7, while exposing the second gear end 43 outside the mounting cavity 25 to mesh with the rack 6. This layout cleverly solves the spatial connection problem of the transmission chain, enabling the power of the gear set 7, protected within the sealed mounting cavity 25, to be reliably transmitted to the rack 6 assembly of the external actuator without the need for complex couplings or additional sealing structures.

[0034] In one embodiment, a circuit board 9 is also included. The circuit board 9 is mounted on the main board bracket 21 and is located between the main board bracket 21 and the knob upper bracket 22. By embedding the flat circuit board 9 into the natural gap formed by the two structural components, space utilization is improved, the redundant space in the thickness direction of the device is fully utilized, and the three-dimensional integration of the electronic and mechanical systems is achieved, thereby effectively controlling the overall size of the product. Secondly, this layout provides an excellent protective environment for the precision circuit; the main board bracket 21, as the main carrier, ensures the stable installation of the circuit board 9, while the knob upper bracket 22 acts as a protective cover, forming a semi-enclosed protective space together with the main board bracket 21, which can effectively prevent damage to the circuit board 9 from accidental impacts, dust accumulation, and electrostatic interference.

[0035] In one embodiment, the trigger 3 includes a knob 31 and a transmission rod 32; the knob 31 includes a rotating disk 33 and rotating shafts 34 and 35 fixed to opposite ends of the rotating disk 33; each rotating shaft 34 and 35 passes through a knob support 23 to rotatably connect to the knob support 23; the opposite ends of the transmission rod 32 are respectively connected to the first transmission gear in the gear set 7 and the knob 31, and the transmission rod 32 passes through the circuit board 9 and the main board bracket 21.

[0036] In this embodiment, torque is transmitted between the knob 31 and the first-end transmission gear through the transmission rod 32, so that the knob 31 and the first-end transmission gear rotate synchronously, minimizing the intermediate links in power transmission and ensuring that the user's operating force can be efficiently and accurately converted into the torque of the drive gear set 7.

[0037] In one embodiment, a first sealing assembly is further included, comprising a first sealing ring 51 and a second sealing ring 52; one of the rotating shafts of the knob 31 is a first rotating shaft 34, and the other rotating shaft is a second rotating shaft 35; a first annular groove is provided on the outer wall of the middle portion of the first rotating shaft 34, and a second annular groove is provided on the outer wall of the middle portion of the second rotating shaft 35; the first sealing ring 51 is disposed in the first annular groove so that the first sealing ring 51 and the upper support 22 of the knob are sealed together; the second sealing ring 52 is disposed in the second annular groove so that the second sealing ring 52 and the knob support 23 are sealed together.

[0038] In this embodiment, the outer wall of the first sealing ring 51 remains in contact with the upper bracket 22 of the knob, and the outer wall of the second sealing ring 52 remains in contact with the knob support 23. This tight fit not only fulfills the basic sealing function but also generates appropriate frictional damping during rotation. The increased frictional damping not only effectively prevents the knob 31 from sliding freely due to accidental contact, ensuring the position remains stable after interpupillary distance adjustment, but also provides users with precise, smooth, and tactile operational feedback, greatly improving the controllability of the adjustment process and the user experience. Simultaneously, this sealing structure forms a reliable sealing barrier at the rotational engagement point between the knob 31 and the brackets 22 and 23, effectively preventing external dust, sweat, and other contaminants from intruding into the device, protecting the delicate gear transmission system from corrosion, and thus extending the product's service life. This innovative design, integrating sealing function with mechanical damping, achieves synergistic optimization of multiple performance objectives with a simple structure.

[0039] In one embodiment, a first cylinder and a second cylinder are coaxially arranged on the motherboard bracket 21. The two ends of the first cylinder are respectively connected to the motherboard bracket 21 and the second cylinder. The diameter of the second cylinder is smaller than that of the first cylinder. A blind hole 36 is provided on the first gear end 42. The first gear end 42 is covered by the blind hole 36 outside the first cylinder and the second cylinder so that the first gear end 42 can rotate around the first cylinder. The second cylindrical outer sleeve is provided with a third sealing ring 53, and the outer wall of the third sealing ring 53 abuts against the inner wall of the blind hole 36.

[0040] In this embodiment, the third sealing ring 53, fitted onto the second cylinder, has its outer wall tightly abutting against the inner wall of the blind hole 36, forming a reliable sealing barrier between the rotating mating surfaces and protecting the precision transmission system. Simultaneously, the moderate friction between the sealing ring 53 and the inner wall of the blind hole 36 provides smooth and tactile damping for the operation of the knob 31, enhancing the feedback feel during adjustment and preventing any looseness caused by play in the knob 31.

[0041] In this application, "multiple" refers to two or more.

[0042] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if any) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0044] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0045] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if the method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if the method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A VR headset, characterized in that, It includes a left lens assembly, a right lens assembly, a frame, and a power assembly disposed on the frame; The left lens assembly and the right lens assembly are both slidably connected to the frame and can move toward or away from each other along a first direction; The power assembly includes a trigger and a gear and rack mechanism, wherein the gear and rack mechanism includes a drive gear and two racks that are respectively fixedly connected to the left lens assembly and the right lens assembly; The two racks are arranged in parallel and their meshing tooth surfaces face each other; the driving gear meshes with the opposing tooth surfaces of the two racks simultaneously, so that when the driving gear rotates, it can synchronously drive the two racks to move in opposite directions in a straight line.

2. The VR glasses according to claim 1, characterized in that, The power assembly also includes a gear set, which comprises a plurality of sequentially meshing transmission gears, each of which is rotatably connected to the frame. The first transmission gear in the gear set is connected to the trigger and is driven to rotate by the trigger. The trigger is rotatably mounted on the frame. The end drive gear in the gear set meshes with the drive gear to transmit power to the drive gear.

3. The VR glasses according to claim 1, characterized in that, It also includes multiple sliding components, and the left lens assembly and the right lens assembly are respectively connected to the skeleton through at least one set of the sliding components; The sliding assembly includes a slide rail and a slider. The slide rail is fixed to the frame and extends in a direction parallel to the first direction. The slider is connected to the corresponding left or right lens assembly.

4. The VR glasses according to claim 2, characterized in that, The frame includes a motherboard bracket, a knob upper bracket, a knob support, and a gear bracket. The gear bracket and the knob upper bracket are respectively connected to opposite sides of the motherboard bracket. The gear bracket has a cavity. The gear bracket and the motherboard bracket enclose a mounting cavity. The gear set is disposed in the mounting cavity. The two sides of the knob bracket are bent toward the motherboard bracket and connected to the motherboard bracket; The middle part of the upper bracket of the knob and the middle part of the main board bracket are spaced apart. The knob support has a notch. The knob support and the upper bracket of the knob enclose a unidirectional opening receiving cavity. A part of the trigger is located inside the receiving cavity, and the other part of the trigger is located outside the receiving cavity.

5. The VR glasses according to claim 4, characterized in that, The driving gear includes a transition section, a first gear end, and a second gear end. The first gear end meshes with the end drive gear, and the second gear end meshes with the rack. The first gear end and the second gear end are located at opposite ends of the transition section.

6. The VR glasses according to claim 5, characterized in that, The gear bracket is provided with a through hole, which connects to the mounting cavity. The transition section passes through the through hole. The first gear end is located inside the receiving cavity, and the second gear end is located outside the receiving cavity.

7. The VR glasses according to claim 4, characterized in that, It also includes a circuit board, which is mounted on the motherboard bracket and is located between the motherboard bracket and the knob bracket.

8. The VR glasses according to claim 7, characterized in that, The triggering element includes a knob and a transmission rod; The knob includes a rotating disk and rotating shafts fixed at opposite ends of the rotating disk; each of the rotating shafts passes through the knob support to rotatably connect to the knob support; The two ends of the transmission rod are respectively connected to the first transmission gear in the gear set and the knob, and the transmission rod passes through the circuit board and the main board bracket.

9. The VR glasses according to claim 8, characterized in that, It also includes a first sealing assembly, which includes a first sealing ring and a second sealing ring; One of the knob's pivots is the first pivot, and the other pivot is the second pivot; The first rotating shaft has a first annular groove on its middle outer wall, and the second rotating shaft has a second annular groove on its middle outer wall. The first sealing ring is disposed in the first annular groove so that the first sealing ring and the upper bracket of the knob are sealed together; The second sealing ring is disposed in the second annular groove so that the second sealing ring and the knob support are sealed together.

10. The VR glasses according to claim 5, characterized in that, The motherboard bracket is provided with a first cylinder and a second cylinder arranged coaxially. The two ends of the first cylinder are respectively connected to the motherboard bracket and the second cylinder. The diameter of the second cylinder is smaller than that of the first cylinder. The first gear end is provided with a blind hole. The first gear end is covered outside the first cylinder and the second cylinder through the blind hole so that the first gear end can rotate around the first cylinder. The second cylindrical outer sleeve is provided with a third sealing ring, the outer wall of which abuts against the inner wall of the blind hole.

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