Adjusting device of virtual display equipment

Abstract

The utility model relates to the technical field of artificial intelligence, in particular to an adjusting device of virtual display equipment, which comprises a driving piece, a harmonic transmission assembly, a moving assembly and a mirror frame, the moving assembly comprises a screw rod and a nut meshed with the screw rod, and the nut is connected with the mirror frame; the two ends of the harmonic transmission assembly are connected with the driving piece and the lead screw respectively, the driving piece drives the lead screw to rotate through the harmonic transmission assembly, and the lead screw drives the mirror frame to move through the nut. The equipment provided by the utility model can solve the technical problems that the transmission mechanism of the existing lens transmission assembly is relatively small in transmission, more in parts and relatively high in cost.

Description

[Technical field]

[0001] The utility model relates to the technical field of artificial intelligence, in particular to an adjusting device for a virtual display device. [Background technology]

[0002] With the development of science and technology, virtual reality devices such as VR glasses have gradually entered people's lives. Virtual reality devices are usually equipped with a lens transmission component, and the moving end of the transmission component is connected to the lens to adjust the distance between the two lenses so that the distance between the two lenses is adapted to the pupil distance of the user's eyes to enhance the user experience.

[0003] The transmission mechanism of the existing VR glasses lens transmission assembly has a relatively small transmission ratio, more parts and higher cost. [Utility Model Content]

[0004] In order to solve the technical problems that the transmission mechanism of the existing lens transmission assembly has a small transmission ratio, many parts and high cost, the utility model provides an adjustment device for a virtual display device.

[0005] The solution to the technical problem of the utility model is to provide an adjustment device for a virtual display device, comprising a driving member, a harmonic transmission component, a moving component and a mirror frame, wherein the moving component comprises a screw rod and a nut meshed with the screw rod, and the nut is connected to the mirror frame; the two ends of the harmonic transmission component are respectively connected to the driving member and the screw rod, the driving member drives the screw rod to rotate through the harmonic transmission component, and the screw rod drives the mirror frame to move through the nut.

[0006] Preferably, the harmonic transmission assembly includes a flexible wheel, a wave generator and an output shaft, two ends of the flexible wheel are respectively connected to the wave generator and the output shaft, the wave generator is connected to the driving member, and the output shaft is connected to the screw rod; the driving member drives the flexible wheel to rotate through the wave generator, and the flexible wheel drives the screw rod to rotate through the output shaft.

[0007] Preferably, it further comprises a planetary transmission assembly, wherein two ends of the planetary transmission assembly are respectively connected to the driving member and the harmonic transmission assembly, and the driving member drives the harmonic transmission assembly to move through the planetary transmission assembly.

[0008] Preferably, the planetary transmission assembly includes a planetary gear, a planetary carrier, a sun gear and a bearing, one end of the bearing is connected to the driving member, and the other end is connected to the sun gear, one end of the planetary carrier is connected to the sun gear, and the other end is connected to the planetary gear; when the driving member is working, it drives the sun gear to rotate, and the sun gear drives the wave generator to rotate through the planetary carrier.

[0009] Preferably, the moving component also includes a shell, the harmonic transmission component and the planetary transmission component are at least partially located in the shell, the screw rod is installed on the shell and exposed to the shell, and the nut is respectively connected to the screw rod and the shell.

[0010] Preferably, a screw hole and a guide groove arranged along the width direction of the nut are provided on the same side of the nut, a guide column is arranged on the shell parallel to the screw rod, the nut is engaged with the screw rod through the screw hole, and the guide groove corresponds to the guide column; when the screw rod rotates, the nut is driven to slide in a direction parallel to the guide column.

[0011] Preferably, the cross-sections of the guide column and the guide groove are correspondingly arranged to be trapezoidal.

[0012] Preferably, a steel wheel is provided in the housing, and the steel wheel is meshed with the planetary wheel and the flexible wheel.

[0013] Preferably, threads in opposite directions are arranged on the surfaces of both sides of the screw rod and are respectively connected to a nut, and the nuts at both ends are respectively connected to a mirror frame.

[0014] Preferably, the moving component also includes a ball bearing and a baffle, the two ends of the screw rod are respectively connected to a ball bearing, the baffle is located at the end of the screw rod away from the harmonic transmission component, and the two sides of the baffle are respectively connected to the ball bearing and the housing.

[0015] Compared with the prior art, the adjustment device of a virtual display device provided by the utility model has the following advantages:

[0016] 1. The utility model provides an adjustment device for a virtual display device, comprising a driving member, a harmonic drive assembly, a moving assembly and a frame, wherein the moving assembly comprises a screw and a nut meshed with the screw, and the nut is connected to the frame; the two ends of the harmonic drive assembly are respectively connected to the driving member and the screw, and the driving member drives the screw to rotate through the harmonic drive assembly, and the screw drives the frame to move through the nut. In the solution provided by the utility model, the harmonic drive assembly is driven by the driving member to work, and the position of the lens in the VR glasses is adjusted by the harmonic drive assembly. The harmonic drive assembly has fewer parts, which saves costs, and its harmonic drive can achieve a large transmission ratio, thereby improving the adjustment efficiency.

[0017] 2. The utility model provides an adjustment device for a virtual display device, wherein the harmonic drive assembly includes a flexible wheel, a wave generator and an output shaft, the two ends of the flexible wheel are respectively connected to the wave generator and the output shaft, the wave generator is connected to the driving member, and the output shaft is connected to the screw rod; the driving member drives the flexible wheel to rotate through the wave generator, and the flexible wheel drives the screw rod to rotate through the output shaft. The purpose of driving the screw rod is achieved through the transmission and cooperation between the various parts in the harmonic drive assembly, and it has a large transmission ratio, thereby improving the adjustment efficiency.

[0018] 3. The utility model provides an adjustment device for a virtual display device, further comprising a planetary transmission assembly, wherein both ends of the planetary transmission assembly are respectively connected to the driving member and the harmonic transmission assembly, and the driving member drives the harmonic transmission assembly to move through the planetary transmission assembly. The planetary transmission assembly plays the role of smoothly and efficiently transmitting the driving member and the harmonic transmission assembly.

[0019] 4. The utility model provides an adjustment device for a virtual display device, wherein the planetary transmission assembly includes a planetary gear, a planetary carrier, a sun gear and a bearing, wherein one end of the bearing is connected to the driving member and the other end is connected to the sun gear, and one end of the planetary carrier is connected to the sun gear and the other end is connected to the planetary gear; when the driving member is working, the sun gear is driven to rotate, and the sun gear drives the wave generator to rotate through the planetary carrier. When the transmission assemblies at each level in the planetary transmission assembly rotate, the harmonic transmission assembly is driven to move, and a transmission function is played between the driving member and the harmonic transmission assembly.

[0020] 5. The utility model provides an adjustment device for a virtual display device, wherein the moving component further comprises a housing, the harmonic drive component and the planetary drive component are at least partially located in the housing, the screw rod is mounted on the housing and exposed to the housing, and the nut is connected to the screw rod and the housing respectively. The housing protects the harmonic drive component and the planetary drive component, prolongs the service life of the device, and enables the nut and the screw rod to cooperate and move more stably.

[0021] 6. The utility model provides an adjustment device for a virtual display device, further comprising a housing, a screw hole and a guide groove arranged along the width direction of the nut are provided on the same side of the nut, a guide column is provided on the housing in parallel with the screw rod, the nut is engaged with the screw rod through the screw hole, and the guide groove is matched with the guide column; when the screw rod rotates, the nut is driven to slide in a direction parallel to the guide column. The guide column and the guide groove cooperate to limit the degree of freedom of the nut's rotation direction, thereby realizing that the screw rod drives the nut to move and preventing the nut from displacement.

[0022] 7. The utility model provides an adjustment device for a virtual display device, wherein the cross-sections of the guide column and the guide groove are correspondingly set to be trapezoidal, thereby facilitating the assembly of the shell and the nut and the stable movement of the nut.

[0023] 8. The utility model provides an adjustment device for a virtual display device, wherein a steel wheel is provided in the shell, and the steel wheel is meshed with the planetary wheel and the flexible wheel. The planetary wheel and the flexible wheel are both meshed with the steel wheel inside the shell, which reduces the difficulty of shell molding and facilitates the manufacture of the shell.

[0024] 9. The utility model provides an adjustment device for a virtual display device, wherein threads in opposite directions are arranged on the surfaces of both sides of the screw rod, and are respectively connected to a nut, and the nuts at both ends are respectively connected to a frame. When the screw rod rotates, the two nuts drive the frame to move synchronously relative to or towards each other, and the nuts at both ends adjust the frame respectively, so as to facilitate adjusting the frame to a position corresponding to the pupil distance.

[0025] 10. The utility model provides an adjustment device for a virtual display device, wherein the moving assembly further comprises a ball bearing and a baffle, the two ends of the screw are respectively connected to a ball bearing, the baffle is located at one end of the screw away from the harmonic drive assembly, and the two sides of the baffle are respectively connected to the ball bearing and the housing. Two ball bearings respectively support the two ends of the left and right rotating screws to ensure the position of the two ends of the screw and improve the transmission efficiency. Because the screw has an axial force, the baffle is added to bear the axial force, prevent the bearing from axial movement, and enhance the stability of the overall structure.

Brief Description of the Drawings

[0026] Figure 1 It is a structural schematic diagram of an adjustment device for a virtual display device provided in the first embodiment of the utility model.

[0027] Figure 2 It is an exploded schematic diagram of an adjustment device of a virtual display device provided in the first embodiment of the utility model.

[0028] Figure 3 It is an exploded schematic diagram of a harmonic drive assembly provided in the first embodiment of the utility model.

[0029] Figure 4 It is an exploded schematic diagram of a planetary transmission assembly provided in the first embodiment of the utility model.

[0030] Figure 5 It is an exploded schematic diagram of a moving assembly provided in the first embodiment of the utility model.

[0031] Figure 6 It is a cross-sectional schematic diagram of a housing, a wave generator and a flexible wheel provided in the first embodiment of the utility model.

[0032] Description of the accompanying drawings:

[0033] 1. Driving parts; 2. Harmonic drive components; 3. Planetary drive components; 4. Moving components;

[0034] 21. Flexspline; 22. Wave generator; 23. Output shaft; 31. Planetary gear; 32. Planetary carrier; 33. Sun gear; 34. Bearing; 41. Screw; 42. Nut; 43. Housing; 44. Guide column; 45. Ball bearing; 46. Baffle;

[0035] 211, first gear; 212, first protrusion; 221, transmission part; 222, second notch; 231, first notch; 232, output part; 321, second protrusion; 322, through hole; 331, second gear; 332, first connecting part; 333, second connecting part; 411, thread; 421, screw hole; 422, guide groove; 423, second mounting hole; 431, steel wheel; 432, first mounting hole; 433, accommodating groove; 434, mounting part; 435, fixing part. [Specific implementation method]

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] It should be noted that the terms "first" and "second" etc. in the specification and claims of the present utility model are used to distinguish different objects rather than to describe a specific order.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0039] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0040] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0041] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] The solution provided by the utility model is suitable for a solution in which lenses are respectively arranged corresponding to the left and right eyes of a user in a head-mounted virtual display device.

[0043] See also Figure 1 and Figure 2 The first embodiment of the utility model provides an adjustment device for a virtual display device, including a driving member 1, a harmonic drive assembly 2, a moving assembly 4 and a frame, wherein the moving assembly 4 includes a screw 41 and a nut 42 meshed with the screw 41, and the nut 42 is connected to the frame; the two ends of the harmonic drive assembly 2 are respectively connected to the driving member 1 and the screw 41, and the driving member 1 drives the screw 41 to rotate through the harmonic drive assembly 2, and the screw 41 drives the frame to move through the nut 42. The solution provided by the utility model drives the harmonic drive assembly 2 to work through the driving member 1, and drives the screw 41 to rotate through the harmonic drive assembly 2 to drive the nut 42 to move, and the frame connected to the nut 42 moves with the nut 42, thereby adjusting the position of the lens in the VR glasses. The harmonic drive assembly 2 has fewer parts and a smaller volume, and its harmonic drive can achieve a large transmission ratio to improve the adjustment efficiency, and has the advantages of high precision and low noise, thereby improving the user experience.

[0044] In this embodiment, the driving member 1 is configured as a motor to stably drive the device to operate.

[0045] See also Figure 2 and Figure 3 The harmonic drive assembly 2 includes a flexible wheel 21, a wave generator 22 and an output shaft 23. The two ends of the flexible wheel 21 are respectively connected to the wave generator 22 and the output shaft 23. The wave generator 22 is connected to the driving member 1, and the output shaft 23 is connected to the screw 41. The driving member 1 drives the flexible wheel 21 to rotate through the wave generator 22, and the flexible wheel 21 drives the screw 41 to rotate through the output shaft 23.

[0046] Furthermore, the wave generator 22 includes a transmission part 221 with an elliptical cross section, and the flexible wheel 21 includes a first gear 211, which is sleeved on the outer periphery of the transmission part 221. When the wave generator 22 rotates, the first gear 211 is driven to rotate through the two ends of the long side of the elliptical cross section to increase the transmission ratio and improve the transmission efficiency.

[0047] Furthermore, a first protrusion 212 is provided on a side of the flexible wheel 21 close to the output shaft 23. The first protrusion 212 is fixedly connected to the first gear 211. A first notch 231 is correspondingly provided on the output shaft 23. The first protrusion 212 and the first notch 231 are correspondingly engaged with each other. When the flexible wheel 21 rotates, the output shaft 23 is driven to rotate by the engaging structure between the first protrusion 212 and the first notch 231, thereby improving the transmission efficiency.

[0048] Furthermore, the output shaft 23 is provided with an output portion 232 on a side close to the screw rod 41 , and the output portion 232 is connected to the screw rod 41 through a shaft hole, so that the screw rod 41 can be stably connected to one side of the harmonic drive component 2 .

[0049] See also Figure 2 , Figure 3 and Figure 4 The device also includes a planetary transmission assembly 3, the two ends of which are connected to the driving member 1 and the harmonic transmission assembly 2 respectively, and the driving member 1 drives the harmonic transmission assembly 2 to move through the planetary transmission assembly 3. The planetary transmission assembly 3 has a high output efficiency, and good dynamic balance and stability. The combination of the harmonic transmission assembly 2 and the planetary transmission assembly 3 can provide a smooth and stable output, achieve a high transmission efficiency, reduce energy loss, ensure the reliability and stability of the transmission process, and reduce vibration and noise.

[0050] Furthermore, the planetary transmission assembly 3 includes a planetary gear 31, a planetary carrier 32, a sun gear 33 and a bearing 34. One end of the bearing 34 is connected to the driving member 1, and the other end is connected to the sun gear 33. One end of the planetary carrier 32 is connected to the sun gear 33, and the other end is connected to the planetary gear 31. When the driving member 1 is working, it drives the sun gear 33 to rotate, and the sun gear 33 drives the wave generator 22 to rotate through the planetary gear 31.

[0051] Furthermore, the sun gear 33 includes a first connecting portion 332, and the first connecting portion 332 is cooperatively connected with the motor shaft hole to improve the stability of the cooperative rotation of the two.

[0052] Furthermore, the motor and the sun gear 33 are matched with each other through a small clearance through the D-shaped shaft hole, thereby reducing the rotation error between the two and improving the transmission accuracy and stability.

[0053] Furthermore, a second connection portion 333 is provided on the side of the sun gear 33 away from the motor, one end of the bearing 34 is connected to the driving member 1, and the other end is connected to the second connection portion 333, so that the stability of the connection between the motor and the sun gear 33 is improved through the bearing 34 and the second connection portion 333.

[0054] Furthermore, the planet carrier 32 includes a through hole 322 , and the sun gear 33 includes a second gear 331 . The second gear 331 is located in the through hole 322 and meshes with the planet gear 31 .

[0055] Furthermore, the outer circumference of the sun gear 33 is meshed with the three planetary gears 31 . When the sun gear 33 rotates, the three planetary gears 31 are driven to rotate to improve the driving efficiency.

[0056] Furthermore, the planet carrier 32 is provided with a second protrusion 321 on the side close to the harmonic transmission component 2, and the wave generator 22 is provided with a second notch 222 on the side close to the planetary transmission component 3. After the second protrusion 321 and the second notch 222 are engaged with each other, the planetary gear 31 rotates to drive the planet carrier 32 to rotate. The planet carrier 32 serves as the output of the planetary transmission component 3, and when it rotates, it drives the wave generator 22 to rotate through the second notch 222.

[0057] Furthermore, the planetary wheel 31 is located in the gap between the second protrusions 321 , and the height of the second protrusions 321 is greater than the height of the planetary wheel 31 , so as to facilitate the rotation of the planetary wheel 31 .

[0058] Furthermore, after the planetary gear 31 is installed on the planetary carrier 32, the wave generator 22 and the planetary carrier 32 are pressed and tightly fitted into one body, which is convenient for assembly and makes the installation of the smaller planetary gear 31 more secure.

[0059] See also Figure 2 and Figure 5 The moving assembly 4 also includes a housing 43, and the harmonic drive assembly 2 and the planetary drive assembly 3 are at least partially located in the housing 43. The housing 43 protects the harmonic drive assembly 2 and the planetary drive assembly 3 and prolongs their service life.

[0060] Furthermore, the portion of the housing 43 that fixes the screw rod 41 is roughly plate-shaped, and a fixing portion 435 and a mounting portion 434 are sequentially arranged on one side, so that one end of the screw rod 41 is connected to the harmonic drive assembly 2. The fixing portion 435 is roughly columnar, and the harmonic drive assembly 2 and the planetary drive assembly 3 are wrapped in the fixing portion 435 to protect the transmission work of the harmonic drive assembly 2 and the planetary drive assembly 3; the mounting portion 434 is located at the end of the housing 43, and is used to fix the driving member 1 to enhance the working stability of the driving member 1.

[0061] See also Figure 4 , Figure 5 and Figure 6A steel wheel 431 is provided in the fixing portion 435, and the steel wheel 431 is engaged with the planetary wheel 31 and the flexible wheel 21 to limit the movable range of the planetary wheel 31 and the flexible wheel 21, so as to prevent the planetary wheel 31 and the flexible wheel 21 from being dislocated and affecting the transmission of the equipment. At the same time, the movable range of the planetary wheel 31 and the flexible wheel 21 is limited by the same steel wheel 431, so as to reduce the production cost of the housing 43.

[0062] Furthermore, the steel wheel 431 is configured as an integrally formed steel wheel 431 , which facilitates injection molding of the shell 43 and reduces costs.

[0063] See also Figure 5 The screw rod 41 is mounted on the housing 43 and exposed outside the housing 43 , and the nut 42 is connected to the screw rod 41 and the housing 43 respectively, so that the position of the nut 42 can be adjusted through the screw rod 41 .

[0064] Furthermore, a first mounting hole 432 is provided on the housing 43 corresponding to the screw rod 41 , and both ends of the screw rod 41 are fixed to the housing 43 through the first mounting hole 432 , thereby enhancing the stability of the screw rod 41 during rotation and preventing dislocation from affecting the operation of the equipment.

[0065] Furthermore, a screw hole 421 and a guide slot 422 arranged along the width direction of the nut 42 are provided on the same side of the nut 42, and a guide post 44 is provided on the housing 43 in parallel with the screw rod 41. The nut 42 is meshed with the screw rod 41 through the screw hole 421, and the guide slot 422 is correspondingly matched with the guide post 44; when the screw rod 41 rotates, the nut 42 is driven to slide in a direction parallel to the guide post 44. The movement trajectory of the nut 42 is limited by the screw rod 41 and the guide post 44, and the range of the nut 42 is adjusted smoothly by sliding, so that the user can adjust the frame easily.

[0066] Furthermore, a second mounting hole 423 is formed on the nut 42 to fix the nut 42 and the lens frame.

[0067] Furthermore, the guide post 44 and the housing 43 are integrally formed, so that the nut 42 can slide along the guide post 44 more stably.

[0068] In this embodiment, a guide column 44 parallel to the screw rod 41 is respectively provided on both sides of the screw rod 41 , and two guide grooves 422 are correspondingly provided on the nut 42 to enhance the sliding stability of the nut 42 .

[0069] Furthermore, the cross-sections of the guide column 44 and the guide groove 422 are correspondingly set to be trapezoidal, so as to facilitate the assembly of the housing 43 and the nut 42 and the stable movement of the nut 42.

[0070] Furthermore, two sections of threads 411 in opposite directions are provided on the surface of the screw rod 41, and are respectively connected with a nut 42. The nuts 42 at both ends are respectively connected with a frame. When the screw rod 41 rotates, the two nuts 42 drive the frame to move synchronously relative to or towards each other. The nuts 42 at both ends adjust the frame respectively, so as to facilitate adjusting the frame to a position corresponding to the user's pupil distance.

[0071] Specifically, the moving assembly 4 further includes a ball bearing 45, and the two ends of the screw rod 41 are respectively connected to a ball bearing 45. The two ball bearings 45 respectively support the two ends of the left and right screw rods 41, ensuring the stability of the two ends of the screw rod 41 and improving the transmission efficiency.

[0072] Furthermore, the moving component 4 also includes a baffle 46, which is located at one end of the screw rod 41 away from the harmonic drive component 2. Both sides of the baffle 46 are respectively connected to the ball bearing 45 and the housing 43. Since there is axial force on the screw rod 41, the baffle 46 is added to withstand the axial force, prevent the ball bearing 45 and the screw rod 41 from axial movement, and enhance the stability of the overall structure.

[0073] Furthermore, a receiving groove 433 is provided on the housing 43 at one side of the first mounting hole 432 , and the blocking piece 46 is located in the receiving groove 433 to fix the blocking piece 46 .

[0074] See also Figure 2 , Figure 3 and Figure 4 The driving member 1 is connected with the shaft hole of the sun gear 33. When the driving member 1 rotates, the sun gear 33 is driven to rotate, thereby driving the wave generator 22 that is engaged with the planetary carrier 32 to rotate through the planetary carrier 32; when the wave generator 22 rotates, it drives the output shaft 23 to rotate, and the output shaft 23 cooperates with the shaft hole of the screw rod 41, thereby driving the screw rod 41 to rotate; the screw rod 41 is meshed with the nut 42, and the nut 42 is fixedly connected to the mirror frame. When the screw rod 41 rotates, it drives the nut 42 to slide along the screw rod 41, thereby driving the mirror frame to move.

[0075] Compared with the prior art, the adjustment device of a virtual display device provided by the utility model has the following advantages:

[0076] 1. The utility model provides an adjustment device for a virtual display device, comprising a driving member, a harmonic drive assembly, a moving assembly and a frame, wherein the moving assembly comprises a screw and a nut meshed with the screw, and the nut is connected to the frame; the two ends of the harmonic drive assembly are respectively connected to the driving member and the screw, and the driving member drives the screw to rotate through the harmonic drive assembly, and the screw drives the frame to move through the nut. In the solution provided by the utility model, the harmonic drive assembly is driven by the driving member to work, and the position of the lens in the VR glasses is adjusted by the harmonic drive assembly. The harmonic drive assembly has fewer parts, which saves costs, and its harmonic drive can achieve a large transmission ratio, thereby improving the adjustment efficiency.

[0077] 2. The utility model provides an adjustment device for a virtual display device, wherein the harmonic drive assembly includes a flexible wheel, a wave generator and an output shaft, the two ends of the flexible wheel are respectively connected to the wave generator and the output shaft, the wave generator is connected to the driving member, and the output shaft is connected to the screw rod; the driving member drives the flexible wheel to rotate through the wave generator, and the flexible wheel drives the screw rod to rotate through the output shaft. The purpose of driving the screw rod is achieved through the transmission and cooperation between the various parts in the harmonic drive assembly, and it has a large transmission ratio, thereby improving the adjustment efficiency.

[0078] 3. The utility model provides an adjustment device for a virtual display device, further comprising a planetary transmission assembly, wherein both ends of the planetary transmission assembly are respectively connected to the driving member and the harmonic transmission assembly, and the driving member drives the harmonic transmission assembly to move through the planetary transmission assembly. The planetary transmission assembly plays the role of smoothly and efficiently transmitting the driving member and the harmonic transmission assembly.

[0079] 4. The utility model provides an adjustment device for a virtual display device, wherein the planetary transmission assembly includes a planetary gear, a planetary carrier, a sun gear and a bearing, wherein one end of the bearing is connected to the driving member and the other end is connected to the sun gear, and one end of the planetary carrier is connected to the sun gear and the other end is connected to the planetary gear; when the driving member is working, the sun gear is driven to rotate, and the sun gear drives the wave generator to rotate through the planetary carrier. When the transmission assemblies at each level in the planetary transmission assembly rotate, the harmonic transmission assembly is driven to move, and a transmission function is played between the driving member and the harmonic transmission assembly.

[0080] 5. The utility model provides an adjustment device for a virtual display device, wherein the moving component further comprises a housing, the harmonic drive component and the planetary drive component are at least partially located in the housing, the screw rod is mounted on the housing and exposed to the housing, and the nut is connected to the screw rod and the housing respectively. The housing protects the harmonic drive component and the planetary drive component, prolongs the service life of the device, and enables the nut and the screw rod to cooperate and move more stably.

[0081] 6. The utility model provides an adjustment device for a virtual display device, further comprising a housing, a screw hole and a guide groove arranged along the width direction of the nut are provided on the same side of the nut, a guide column is provided on the housing in parallel with the screw rod, the nut is engaged with the screw rod through the screw hole, and the guide groove is matched with the guide column; when the screw rod rotates, the nut is driven to slide in a direction parallel to the guide column. The guide column and the guide groove cooperate to limit the degree of freedom of the nut's rotation direction, thereby realizing that the screw rod drives the nut to move and preventing the nut from displacement.

[0082] 7. The utility model provides an adjustment device for a virtual display device, wherein the cross-sections of the guide column and the guide groove are correspondingly set to be trapezoidal, thereby facilitating the assembly of the shell and the nut and the stable movement of the nut.

[0083] 8. The utility model provides an adjustment device for a virtual display device, wherein a steel wheel is provided in the shell, and the steel wheel is meshed with the planetary wheel and the flexible wheel. The planetary wheel and the flexible wheel are both meshed with the steel wheel inside the shell, which reduces the difficulty of shell molding and facilitates the manufacture of the shell.

[0084] 9. The utility model provides an adjustment device for a virtual display device, wherein threads in opposite directions are arranged on the surfaces of both sides of the screw rod, and are respectively connected to a nut, and the nuts at both ends are respectively connected to a frame. When the screw rod rotates, the two nuts drive the frame to move synchronously relative to or towards each other, and the nuts at both ends adjust the frame respectively, so as to facilitate adjusting the frame to a position corresponding to the pupil distance.

[0085] 10. The utility model provides an adjustment device for a virtual display device, wherein the moving assembly further comprises a ball bearing and a baffle, the two ends of the screw are respectively connected to a ball bearing, the baffle is located at one end of the screw away from the harmonic drive assembly, and the two sides of the baffle are respectively connected to the ball bearing and the housing. Two ball bearings respectively support the two ends of the left and right rotating screws to ensure the position of the two ends of the screw and improve the transmission efficiency. Because the screw has an axial force, the baffle is added to bear the axial force, prevent the bearing from axial movement, and enhance the stability of the overall structure.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for adjusting a virtual display device, characterized in that: It includes a driving member, a harmonic drive assembly, a moving assembly and a mirror frame, wherein the moving assembly includes a lead screw and a nut meshed with the lead screw, and the nut is connected to the mirror frame; The two ends of the harmonic transmission component are respectively connected to the driving member and the screw rod. The driving member drives the screw rod to rotate through the harmonic transmission component, and the screw rod drives the mirror frame to move through the nut.

2. The adjustment device for a virtual display device according to claim 1, characterized in that: The harmonic drive assembly includes a flexible wheel, a wave generator and an output shaft, the two ends of the flexible wheel are respectively connected to the wave generator and the output shaft, the wave generator is connected to the driving member, and the output shaft is connected to the screw rod; The driving member drives the flexible wheel to rotate through the wave generator, and the flexible wheel drives the lead screw to rotate through the output shaft.

3. The adjustment device for a virtual display device according to claim 2, characterized in that: It also includes a planetary transmission assembly, two ends of which are respectively connected to the driving member and the harmonic transmission assembly, and the driving member drives the harmonic transmission assembly to move through the planetary transmission assembly.

4. The adjustment device for a virtual display device according to claim 3, characterized in that: The planetary transmission assembly includes a planetary gear, a planetary carrier, a sun gear and a bearing, one end of the bearing is connected to the driving member, and the other end is connected to the sun gear, one end of the planetary carrier is connected to the sun gear, and the other end is connected to the planetary gear; when the driving member is working, it drives the sun gear to rotate, and the sun gear drives the wave generator to rotate through the planetary carrier.

5. The adjustment device for a virtual display device according to claim 4, characterized in that: The moving assembly also includes a housing, the harmonic transmission assembly and the planetary transmission assembly are at least partially located in the housing, the screw rod is mounted on the housing and exposed from the housing, and the nut is connected to the screw rod and the housing respectively.

6. The adjustment device for a virtual display device according to claim 5, characterized in that: A screw hole and a guide groove arranged along the width direction of the nut are provided on the same side of the nut, a guide column is arranged on the shell parallel to the screw rod, the nut is engaged with the screw rod through the screw hole, and the guide groove corresponds to the guide column; when the screw rod rotates, the nut is driven to slide in a direction parallel to the guide column.

7. The adjustment device for a virtual display device according to claim 6, characterized in that: The cross sections of the guide column and the guide groove are correspondingly arranged to be trapezoidal.

8. The adjustment device for a virtual display device according to claim 5, characterized in that: A steel wheel is provided in the shell, and the steel wheel is meshed with the planetary wheel and the flexible wheel.

9. The adjustment device for a virtual display device according to claim 1, characterized in that: Threads in opposite directions are arranged on the surfaces of both sides of the screw rod and are respectively connected with a nut, and the nuts at both ends are respectively connected with a mirror frame.

10. The adjustment device for a virtual display device according to claim 5, characterized in that: The moving component also includes a ball bearing and a baffle. The two ends of the screw rod are respectively connected to a ball bearing. The baffle is located at one end of the screw rod away from the harmonic transmission component. Both sides of the baffle are respectively connected to the ball bearing and the housing.

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