Head-mounted virtual reality VR device

Abstract

The invention relates to the technical field of virtual reality, and provides a head-mounted virtual reality VR device which comprises a shell mechanism, an object distance adjusting mechanism, a tightness adjusting mechanism, a first elastic band, a second elastic band and VR lenses, the object distance adjusting mechanism is fixedly installed in the shell mechanism, and the VR lenses are fixedly installed on the front side and the rear side of the interior of the object distance adjusting mechanism. A first elastic belt is fixedly installed at the upper end of the shell mechanism, second elastic belts are fixedly installed on the front side and the rear side of the shell mechanism, and the right end of the first elastic belt is fixedly installed in the middle of the upper end of the tightness adjusting mechanism. Through a limiting assembly in the tightness adjusting mechanism, when a user wears the VR glasses to watch a VR video, the front and rear elastic bands II can be quickly loosened, and in the quick loosening process, no external part rotates quickly, so that the hair of the user is wound, and the hair of the user is pulled off due to quick winding, so that the user experience is improved. And the adjusting safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of virtual reality technology, and in particular to a head-mounted virtual reality (VR) device. Background Art

[0002] VR glasses are VR headsets, virtual reality head-mounted display devices. VR glasses use head-mounted display devices to block people's vision and hearing to the outside world, guiding users to have a feeling of being in a virtual environment. The display principle is that the left and right eye screens display the images of the left and right eyes respectively. After the human eye obtains this different information, a sense of three-dimensionality is produced in the mind. At the same time, different environmental modes can be switched according to the needs of the user to meet the needs of the user.

[0003] In actual use, VR glasses are generally worn on the user's head through an elastic cloth strap. Although the elastic cloth strap has a certain degree of elasticity, users with different head shapes may still wear it too tight or too loose. To solve this problem, there is a method of setting the elastic strap as a Velcro, such as a VR glasses adjustment device disclosed in announcement number CN214846041U. However, the Velcro will be damaged during repeated adhesion. To solve this problem, a neck-hanging split smart wearable device disclosed in announcement number CN220381381U adopts a threaded adjustment method to prevent parts from being easily damaged, but the elasticity needs to be adjusted before wearing. The tightness of the cloth belt, and the user often needs to adjust the tightness of the elastic cloth belt according to the actual use situation during the wearing process. For example, when watching VR videos, the user is generally in a sitting state. At this time, there is no need to tighten the elastic cloth belt, and the VR glasses will not fall off. Loosening the elastic cloth belt will reduce the pressure when the user wears it and improve the user's comfort. When playing VR games, the user often needs to perform large-scale limb operations. At this time, the elastic cloth belt needs to be tightened to prevent the VR glasses from falling off. In addition, if this thread adjustment method is used to adjust the tightness during wearing, it is easy for the user's hair to be stuck, resulting in an inability to adjust or pulling out the user's hair.

[0004] Therefore, we make improvements to this and propose a head-mounted virtual reality VR device. Summary of the invention

[0005] (I) The technical purpose of the present invention is to quickly adjust the tightness of the elastic band according to actual needs during the wearing of VR glasses, thereby improving the wearing comfort of the user and ensuring the safety of the use of VR glasses.

[0006] (II) Technical solution In order to achieve the above-mentioned invention object, the present invention provides a head-mounted virtual reality VR device, including a shell mechanism, an object distance adjustment mechanism, a tension adjustment mechanism, an elastic band 1, an elastic band 2 and a VR lens, wherein the object distance adjustment mechanism is fixedly installed inside the shell mechanism, the VR lens is fixedly installed on the front and rear sides of the object distance adjustment mechanism, the upper end of the shell mechanism is fixedly installed with the elastic band 1, the front and rear sides of the shell mechanism are fixedly installed with the elastic band 2, and the right end of the elastic band 1 is fixedly installed at the middle of the upper end of the tension adjustment mechanism; The tension adjustment mechanism includes an adjustment component and a limit assembly. The adjustment component includes an adjustment box, a protective pad, a second rack, a third gear, a driving shaft, a press cover, a protrusion, an adjustment wheel three and a limit slide groove. The left end of the adjustment box is fixedly connected with a protective pad. The upper and lower ends of the interior of the adjustment box are slidably connected with the second rack. The upper and lower sides of the second rack are meshed with the third gear. The middle part of the third gear is fixedly connected with the driving shaft. The right end of the driving shaft is fixedly connected with a press cover. The outer periphery of the press cover is evenly distributed with protrusions. The outer periphery of the press cover is slidably connected with the third adjustment wheel. The inner periphery of the third adjustment wheel is evenly provided with a limit slide groove. The limit assembly includes a limit wheel, a limit claw, a spring one, a limit ring, a limit box, a spring two, and a baffle. The inner periphery of the limit wheel is evenly distributed with limit claws. The inner sides of the limit claws are fixedly connected with the first spring. The outer periphery of the limit wheel is rotatably connected to the inner periphery of the limit ring. The inner left side of the limit box is fixedly connected with the second spring, and the right end of the second spring is fixedly connected with a baffle.

[0007] Preferably, the right end of the second elastic band is fixedly connected to the side of the second rack that is far away from the front and back, and the outer periphery of the right end of the second elastic band is slidably connected to the inside of the adjustment box.

[0008] Preferably, the outer periphery of the protrusion is slidably connected to the inner periphery of the limiting sliding groove, and the middle outer periphery of the driving shaft is rotatably connected to the right middle opening of the regulating box.

[0009] Preferably, the right end of the limiting wheel is fixedly connected to the left end of the adjusting wheel three, and the left end of the limiting ring is fixedly connected to the middle part of the right end of the adjusting box.

[0010] Preferably, one end of the limiting claw close to the axis of the limiting wheel is rotatably connected to the inside of the limiting wheel through a rotating rod, and one end of the spring close to the axis of the limiting wheel is fixedly connected to the inside of the limiting wheel.

[0011] Preferably, the outer periphery of the right end of the limit box is fixedly connected to the left end opening of the adjustment box, the outer periphery of the baffle is slidably connected to the inside of the limit box, and the right side of the baffle is in contact with the left side of the gear three.

[0012] Preferably, the shell mechanism includes an outer shell, a sealing cushion, an adjustment seat, a mobile phone holder, a baffle, a cooling fan and a breathable plate, the right side of the outer shell is fixedly connected to the sealing cushion, the right side of the inner middle portion of the outer shell is fixedly connected to the breathable plate, the inner left side of the outer shell is slidably connected to the adjustment seat, the left side of the adjustment seat is fixedly connected to the mobile phone holder, the left front end of the left side of the outer shell is rotatably connected to the baffle, and the middle portion of the right side of the mobile phone holder is fixedly connected to the cooling fan.

[0013] Preferably, the object distance adjustment mechanism includes a mounting frame, a rotating shaft, an adjusting wheel 1, a gear 1, a rack 1, an adjusting wheel 2, a gear 2 and a lens frame, the mounting frame is rotatably connected to the rotating shaft inside, the front and rear ends of the rotating shaft are fixedly connected to the adjusting wheel 1, the side away from the adjusting wheel 1 is fixedly connected to the gear 1, the lower end of the gear 1 is meshed with the rack 1, the middle part of the right end of the mounting frame is rotatably connected to the adjusting wheel 2, the middle part of the right side of the adjusting wheel 2 is fixedly connected to the gear 2, and the outer periphery of the gear 2 is meshed with the upper end of the lens frame.

[0014] Preferably, the right end of the mounting frame is fixedly connected to the upper left end of the air-permeable plate, and the lower end of the lens frame is slidably connected to the middle part of the inner bottom wall of the outer shell.

[0015] Preferably, the upper ends of the adjusting wheel 1 and the adjusting wheel 2 are rotatably connected in the upper end opening of the outer shell, and the left end of the rack 1 is fixedly connected to the front and rear ends of the upper right side of the adjusting seat.

[0016] (III) Beneficial effects Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art: 1. The elastic bands on both sides can be quickly adjusted by the adjustment components in the tension adjustment mechanism to fit tightly with both sides of the user's head, so that after the user puts on the VR glasses, the elastic bands on both sides can be quickly tightened to prevent the VR glasses from falling off due to large body movements during the game.

[0017] 2. Through the limit components in the tension adjustment mechanism, the user can quickly loosen the front and rear elastic bands when wearing VR glasses to watch VR videos. In the process of rapid loosening, no external parts rotate quickly to cause entanglement of the user's hair, causing the user's hair to be pulled out due to rapid entanglement, thereby improving the safety of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0019] Figure 1 This is a stereoscopic schematic diagram of a head-mounted virtual reality (VR) device provided in the present application; Figure 2 The second stereoscopic schematic diagram of a head-mounted virtual reality (VR) device provided in the present application; Figure 3 This is an exploded 3D schematic diagram of an elastic cloth belt and a tension adjustment mechanism of a head-mounted virtual reality VR device provided by the present application; Figure 4 An exploded stereoscopic schematic diagram of a limit assembly of a head-mounted virtual reality (VR) device provided in the present application; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is an exploded stereoscopic schematic diagram of a shell structure of a head-mounted virtual reality VR device provided in the present application; Figure 7 The second exploded stereoscopic schematic diagram of the shell structure of a head-mounted virtual reality VR device provided by the present application; Figure 8 A three-dimensional schematic diagram of an object distance adjustment mechanism for a head-mounted virtual reality (VR) device provided in the present application.

[0020] In the figure: 1. Shell mechanism; 11. Outer shell; 12. Sealing cushion; 13. Adjustment seat; 14. Mobile phone holder; 15. Baffle; 16. Cooling fan; 17. Breathable plate; 2. Object distance adjustment mechanism; 21. Mounting frame; 22. Rotating shaft; 23. Adjustment wheel 1; 24. Gear 1; 25. Rack 1; 26. Adjustment wheel 2; 27. Gear 2; 28. Lens holder; 3. Tension adjustment mechanism; 3 1. Adjustment box; 32. Pad; 33. Rack 2; 34. Gear 3; 35. Drive shaft; 36. Press cover; 37. Protrusion; 38. Adjustment wheel 3; 39. Limiting slide; 310. Limiting wheel; 311. Limiting claw; 312. Spring 1; 313. Limiting ring; 314. Limiting box; 315. Spring 2; 316. Blocking piece; 4. Elastic band 1; 5. Elastic band 2; 6. VR lens. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0022] like Figure 1-Figure 8As shown, this embodiment proposes a head-mounted virtual reality VR device, including a shell mechanism 1, an object distance adjustment mechanism 2, a tension adjustment mechanism 3, an elastic band 1 4, an elastic band 2 5 and a VR lens 6. The object distance adjustment mechanism 2 is fixedly installed inside the shell mechanism 1, and the VR lens 6 is fixedly installed on the front and back sides of the object distance adjustment mechanism 2. The upper end of the shell mechanism 1 is fixedly installed with the elastic band 1 4, and the front and back sides of the shell mechanism 1 are fixedly installed with the elastic band 2 5. The right end of the elastic band 1 4 is fixedly installed at the middle of the upper end of the tension adjustment mechanism 3. The tension adjustment mechanism 3 includes an adjustment component and a limiting component. The adjustment component includes an adjustment box 31, a pad 32, a rack 2 33, a gear 34, a drive shaft 35, a cover 36, a protrusion 37, an adjustment wheel 38 and a limiting slide groove 39. The left end of the adjustment box 31 is fixedly connected to the pad 32, and the upper and lower ends of the inner part of the adjustment box 31 are slidably connected to the rack 2 33, and the upper and lower sides of the rack 2 33 are meshed with the gear 34. The middle part of the gear 34 is fixedly connected to the drive shaft 35, and the right end of the drive shaft 35 is fixedly connected to the cover 36. The outer periphery of the cover 36 is evenly distributed with protrusions 37. The outer periphery of 36 is slidably connected with an adjusting wheel three 38, and the inner periphery of the adjusting wheel three 38 is evenly provided with a limiting sliding groove 39. The limiting assembly includes a limiting wheel 310, a limiting claw 311, a spring one 312, a limiting ring 313, a limiting box 314, a spring two 315, and a blocking piece 316. The limiting claw 311 is evenly distributed inside the limiting wheel 310, and the inner side of the limiting claw 311 is fixedly connected with a spring one 312. The outer periphery of the limiting wheel 310 is rotatably connected to the inside of the limiting ring 313, the inner left side of the limiting box 314 is fixedly connected with a spring two 315, and the right end of the spring two 315 is fixedly connected with a blocking piece 316.

[0023] In this embodiment, the right end of the second elastic band 5 is fixedly connected to the side of the second rack 33 that is far away from the front and back, and the outer periphery of the right end of the second elastic band 5 is slidably connected to the inside of the adjustment box 31.

[0024] In this embodiment, the outer periphery of the protrusion 37 is slidably connected to the inner periphery of the limiting sliding groove 39 , and the middle outer periphery of the driving shaft 35 is rotatably connected to the right middle opening of the adjustment box 31 .

[0025] In this embodiment, the right end of the limiting wheel 310 is fixedly connected to the left end of the adjusting wheel 38 , and the left end of the limiting ring 313 is fixedly connected to the middle of the right end of the adjusting box 31 .

[0026] In this embodiment, one end of the limiting claw 311 close to the axis of the limiting wheel 310 is rotatably connected to the inside of the limiting wheel 310 through a rotating rod, and one end of the spring 1 312 close to the axis of the limiting wheel 310 is fixedly connected to the inside of the limiting wheel 310.

[0027] In this embodiment, the right end periphery of the limit box 314 is fixedly connected to the left end opening of the adjustment box 31, the periphery of the baffle 316 is slidably connected to the inside of the limit box 314, and the right side of the baffle 316 is in contact with the left side of the gear three 34.

[0028] Specifically, the user opens the baffle 15, places the mobile phone inside the mobile phone holder 14, closes the baffle 15, and wears the VR glasses. If the user runs a VR game to perform game operations, the elastic bands 25 on both sides need to be tightened to prevent the VR glasses from falling off during game operations. At this time, the adjusting wheel 38 is rotated clockwise, and the protrusion 37 on the outer periphery of the pressing cover 36 cooperates with the limiting slide groove 39 on the inner periphery of the adjusting wheel 38 to drive the pressing cover 36 to rotate, and then the gear 34 is driven to rotate through the driving shaft 35, and then the racks 23 on both sides are driven to slide close to each other inside the adjusting box 31, and finally the right ends of the front and rear elastic bands 25 are driven to rotate. The inside of the adjustment box 31 slides close to each other, thereby adjusting the elastic bands 25 on both sides to fit tightly with the two sides of the user's head. When the appropriate tightness is adjusted, the adjustment wheel 38 is no longer rotated. The limiting claw 311 and the spring 1 312 inside the limiting wheel 310 cooperate with each other, so that the spring 1 312 clamps the inner teeth of the limiting ring 313, thereby fixing the adjustment wheel 38 so that it cannot rotate counterclockwise, and finally the exposed length of the front and rear elastic bands 25 is fixed. The elastic bands 25 on both sides can be quickly adjusted by the adjustment components in the tightness adjustment mechanism 3 to fit tightly with the two sides of the user's head, so that the user can quickly adjust after wearing the VR glasses. The elastic bands 25 on both sides are tightened to prevent the VR glasses from falling off due to large body movements of the user during the game. When the user plays the VR video, he only needs to press the middle cover 36 to drive the gear 34 to squeeze the blocking piece 316 to slide to the inside of the limit box 314 through the driving shaft 35, so that the gear 34 and the rack 2 33 are disengaged. The elastic band 25 is affected by its own elastic force, and the right end slides out from the inside of the adjustment box 31, thereby driving the racks 2 33 on the front and rear sides to slide away from each other in the adjustment box 31. When the elastic band 25 is adjusted to a suitable tightness, the cover 36 is released, and the spring 2 315 squeezes the blocking piece 316 to drive the gear 34 The limit claw 311 inside the limit wheel 310 cooperates with the spring 1 312, so that the spring 1 312 clamps the inner teeth of the limit ring 313, thereby fixing the adjustment wheel 38 so that it cannot rotate counterclockwise, and finally fixes the exposed length of the front and rear elastic bands 2 5. Through the limit assembly in the tension adjustment mechanism 3, the user can quickly loosen the front and rear elastic bands 2 5 when wearing VR glasses to watch VR videos, and in the process of rapid loosening, no external parts rotate rapidly to cause the user's hair to be entangled, causing the user's hair to be pulled out due to rapid entanglement, thereby improving the safety of adjustment.

[0029] In this embodiment, the shell mechanism 1 includes an outer shell 11, a sealing cushion 12, an adjustment seat 13, a mobile phone holder 14, a baffle 15, a cooling fan 16 and a breathable plate 17. The sealing cushion 12 is fixedly connected to the right side of the outer shell 11, the breathable plate 17 is fixedly connected to the right side of the inner middle part of the outer shell 11, the adjustment seat 13 is slidably connected to the inner left side of the outer shell 11, the mobile phone holder 14 is fixedly connected to the left side of the adjustment seat 13, the baffle 15 is rotatably connected to the front end of the left side of the outer shell 11, and the cooling fan 16 is fixedly connected to the middle part of the right side of the mobile phone holder 14.

[0030] In this embodiment, the object distance adjustment mechanism 2 includes a mounting frame 21, a rotating shaft 22, an adjusting wheel 1 23, a gear 1 24, a rack 1 25, an adjusting wheel 26, a gear 27 and a lens frame 28. The mounting frame 21 is rotatably connected to the rotating shaft 22, the front and rear ends of the rotating shaft 22 are fixedly connected to the adjusting wheel 1 23, the side away from the adjusting wheel 1 23 is fixedly connected to the gear 1 24, the lower end of the gear 1 24 is meshed with the rack 1 25, the middle part of the right end of the mounting frame 21 is rotatably connected to the adjusting wheel 26, the middle part of the right side of the adjusting wheel 26 is fixedly connected to the gear 27, and the outer periphery of the gear 27 is meshed with the upper end of the lens frame 28.

[0031] In this embodiment, the right end of the mounting frame 21 is fixedly connected to the upper left end of the air permeable plate 17 , and the lower end of the lens frame 28 is slidably connected to the middle of the inner bottom wall of the outer shell 11 .

[0032] In this embodiment, the upper ends of the adjusting wheel 1 23 and the adjusting wheel 2 26 are rotatably connected to the upper end opening of the outer shell 11, and the left end of the rack 1 25 is fixedly connected to the front and rear ends of the upper right side of the adjusting seat 13.

[0033] Specifically, the shell mechanism 1 is used to place the user's mobile phone for VR operation, and the object distance adjustment mechanism 2 is used to adjust the distance between the mobile phone and the VR lens 6, so as to adjust the object distance so that different users can ensure comfortable VR operation. The working principle is the existing technology and will not be repeated here.

[0034] Working principle: after the user opens the baffle 15, places the mobile phone inside the mobile phone holder 14, closes the baffle 15, and wears the VR glasses, if the user runs the VR game to perform game operations, it is necessary to tighten the elastic bands 25 on both sides to prevent the VR glasses from falling off during game operations. At this time, the adjusting wheel 38 is rotated clockwise, and the protrusion 37 on the outer periphery of the pressing cover 36 cooperates with the limiting slide groove 39 on the inner periphery of the adjusting wheel 38 to drive the pressing cover 36 to rotate, and then the gear 34 is driven to rotate through the driving shaft 35, and then the racks 233 on both sides are driven to slide close to each other inside the adjusting box 31, and finally the right ends of the front and rear elastic bands 25 are driven. The two sides of the elastic bands 25 are slid together inside the adjustment box 31, and then the elastic bands 25 on both sides are adjusted to fit tightly with the two sides of the user's head. When the appropriate tightness is adjusted, the adjustment wheel 38 is no longer rotated. The limiting claw 311 and the spring 1 312 inside the limiting wheel 310 cooperate with each other, so that the spring 1 312 clamps the inner teeth of the limiting ring 313, and then the adjustment wheel 3 38 is fixed and cannot rotate counterclockwise. Finally, the exposed lengths of the front and rear elastic bands 25 are fixed. The elastic bands 25 on both sides can be quickly adjusted by the adjustment components in the tightness adjustment mechanism 3 to fit tightly with the two sides of the user's head, so that the user can quickly adjust the tension after wearing the VR glasses. The elastic bands 25 on both sides are tightened to prevent the VR glasses from falling off due to large body movements of the user during the game. When the user plays the VR video, he only needs to press the middle cover 36 to drive the gear 34 to squeeze the blocking piece 316 to slide to the inside of the limit box 314 through the driving shaft 35, so that the gear 34 and the rack 2 33 are disengaged. The elastic band 25 is affected by its own elastic force, and the right end slides out from the inside of the adjustment box 31, thereby driving the racks 2 33 on the front and rear sides to slide away from each other in the adjustment box 31. When the elastic band 25 is adjusted to a suitable tightness, the cover 36 is released, and the spring 2 315 squeezes the blocking piece 316 to drive the gear 34 The limit claw 311 inside the limit wheel 310 cooperates with the spring 1 312, so that the spring 1 312 clamps the inner teeth of the limit ring 313, thereby fixing the adjustment wheel 38 so that it cannot rotate counterclockwise, and finally fixes the exposed length of the front and rear elastic bands 2 5. Through the limit assembly in the tension adjustment mechanism 3, the user can quickly loosen the front and rear elastic bands 2 5 when wearing VR glasses to watch VR videos, and in the process of rapid loosening, no external parts rotate rapidly to cause the user's hair to be entangled, causing the user's hair to be pulled out due to rapid entanglement, thereby improving the safety of adjustment.

[0035] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A head-mounted virtual reality (VR) device, comprising a housing mechanism (1), an object distance adjustment mechanism (2), a tension adjustment mechanism (3), an elastic band 1 (4), an elastic band 2 (5) and a VR lens (6), characterized in that: An object distance adjustment mechanism (2) is fixedly mounted inside the shell mechanism (1), VR lenses (6) are fixedly mounted on both the front and rear sides of the object distance adjustment mechanism (2), an elastic band 1 (4) is fixedly mounted on the upper end of the shell mechanism (1), an elastic band 2 (5) is fixedly mounted on both the front and rear sides of the shell mechanism (1), and the right end of the elastic band 1 (4) is fixedly mounted on the middle part of the upper end of the tension adjustment mechanism (3); The tension adjustment mechanism (3) comprises an adjustment component and a limiting component. The adjustment component comprises an adjustment box (31), a pad (32), a second rack (33), a third gear (34), a drive shaft (35), a cover (36), a protrusion (37), an adjustment wheel third (38) and a limiting slide groove (39). The left end of the adjustment box (31) is fixedly connected to the pad (32). The upper and lower ends of the interior of the adjustment box (31) are slidably connected to the second rack (33). The upper and lower sides of the second rack (33) are meshed with the third gear (34). The middle part of the third gear (34) is fixedly connected to the drive shaft (35). The right end of the drive shaft (35) is fixedly connected to the cover (36). The outer periphery of the cover (36) is evenly distributed with protrusions (37). The outer periphery of the push cover (36) is slidably connected to an adjusting wheel three (38), and the inner periphery of the adjusting wheel three (38) is evenly provided with a limiting sliding groove (39). The limiting assembly comprises a limiting wheel (310), a limiting claw (311), a spring one (312), a limiting ring (313), a limiting box (314), a spring two (315), and a blocking piece (316). The limiting claws (311) are evenly distributed inside the limiting wheel (310), and the inner sides of the limiting claws (311) are fixedly connected to the spring one (312). The outer periphery of the limiting wheel (310) is rotatably connected to the inside of the limiting ring (313), the inner left side of the limiting box (314) is fixedly connected to the spring two (315), and the right end of the spring two (315) is fixedly connected to the blocking piece (316).

2. A head mounted virtual reality (VR) device according to claim 1, characterized in that: The right end of the second elastic band (5) is fixedly connected to the side of the second rack (33) that is far away from the front and rear, and the outer periphery of the right end of the second elastic band (5) is slidably connected to the inside of the adjustment box (31).

3. A head mounted virtual reality (VR) device according to claim 1, characterized in that: The outer periphery of the protrusion (37) is slidably connected to the inner periphery of the limiting sliding groove (39), and the middle outer periphery of the driving shaft (35) is rotatably connected to the right middle opening of the regulating box (31).

4. A head mounted virtual reality (VR) device according to claim 1, characterized in that: The right end of the limiting wheel (310) is fixedly connected to the left end of the regulating wheel three (38), and the left end of the limiting ring (313) is fixedly connected to the middle of the right end of the regulating box (31).

5. A head mounted virtual reality (VR) device according to claim 1, characterized in that: One end of the limiting claw (311) close to the axis of the limiting wheel (310) is rotatably connected to the inside of the limiting wheel (310) through a rotating rod, and one end of the spring 1 (312) close to the axis of the limiting wheel (310) is fixedly connected to the inside of the limiting wheel (310).

6. A head mounted virtual reality (VR) device according to claim 1, characterized in that: The outer periphery of the right end of the limit box (314) is fixedly connected to the left end opening of the adjustment box (31), the outer periphery of the baffle (316) is slidably connected to the inside of the limit box (314), and the right side of the baffle (316) is in contact with the left side of the gear three (34).

7. A head mounted virtual reality (VR) device according to claim 1, characterized in that: The housing structure (1) comprises an outer shell (11), a sealing cushion (12), an adjustment seat (13), a mobile phone holder (14), a baffle (15), a cooling fan (16) and a ventilation plate (17); the right side of the outer shell (11) is fixedly connected to the sealing cushion (12); the right side of the inner middle part of the outer shell (11) is fixedly connected to the ventilation plate (17); the inner left side of the outer shell (11) is slidably connected to the adjustment seat (13); the left side of the adjustment seat (13) is fixedly connected to the mobile phone holder (14); the left front end of the left side of the outer shell (11) is rotatably connected to the baffle (15); and the middle part of the right side of the mobile phone holder (14) is fixedly connected to the cooling fan (16).

8. A head mounted virtual reality (VR) device according to claim 7, characterized in that: The object distance adjustment mechanism (2) comprises a mounting frame (21), a rotating shaft (22), an adjusting wheel 1 (23), a gear 1 (24), a rack 1 (25), an adjusting wheel 2 (26), a gear 2 (27) and a lens frame (28); the mounting frame (21) is rotatably connected to the rotating shaft (22); the front and rear ends of the rotating shaft (22) are fixedly connected to the adjusting wheel 1 (23); the side of the adjusting wheel 1 (23) away from the adjusting wheel 1 (23) is fixedly connected to the gear 1 (24); the lower end of the gear 1 (24) is meshedly connected to the rack 1 (25); the middle part of the right end of the mounting frame (21) is rotatably connected to the adjusting wheel 2 (26); the middle part of the right side of the adjusting wheel 2 (26) is fixedly connected to the gear 2 (27); the outer periphery of the gear 2 (27) is meshed with the upper end of the lens frame (28).

9. A head mounted virtual reality (VR) device according to claim 8, characterized in that: The right end of the mounting frame (21) is fixedly connected to the upper left end of the air permeable plate (17), and the lower end of the lens frame (28) is slidably connected to the middle part of the inner bottom wall of the outer shell (11).

10. A head mounted virtual reality (VR) device according to claim 8, characterized in that: The upper ends of the adjusting wheel 1 (23) and the adjusting wheel 2 (26) are both rotatably connected to the upper opening of the outer shell (11), and the left end of the rack 1 (25) is fixedly connected to the front and rear ends of the upper right side of the adjusting seat (13).

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