CN215575944U

CN215575944U - VR head display equipment with adjustable focal length

Info

Publication number: CN215575944U
Application number: CN202122403149.2U
Authority: CN
Inventors: 胡子霄
Original assignee: Hainan Zhirong Information Technology Co ltd
Current assignee: Hainan Zhirong Information Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-01-18
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to the technical field of VR head display equipment, in particular to VR head display equipment with adjustable focal length, which comprises a box body, wherein a left display part and a right display part are symmetrically arranged in the box body, the left display part comprises a display screen and a lens assembly, the right display part comprises the display screen and the lens assembly, a left focusing mechanism and a right focusing mechanism are arranged in the left display part, the left focusing mechanism comprises a left adjusting gear, threads are arranged on one side of the left adjusting gear, the right focusing mechanism comprises a right adjusting gear, threads are also arranged on one side of the right adjusting gear, the lens assembly comprises a lens support and a lens, the lens is fixedly arranged on the lens support, and the lens support is provided with threads matched with an annular boss. Through rotatory left adjustment gear, drive annular boss and screw thread and rotate, and then promote and take place to remove with annular boss threaded connection's lens support, just can realize the focus of left display part and adjust, carry out the focus with the same structure in the right display part and adjust.

Description

VR head display equipment with adjustable focal length

Technical Field

The utility model relates to the technical field of VR head display equipment, in particular to VR head display equipment with adjustable focal length.

Background

Along with the improvement of science and technology, the virtual reality technology has slowly walked into people's life, and VR head-mounted display is virtual reality head-mounted display equipment, is one kind and utilizes head-mounted display equipment to seal people's vision, sense of hearing to the external world, and the guide user produces the sensation of one's own in virtual environment. The display principle is that the left and right eye screens respectively display images of the left and right eyes, and the human eyes generate stereoscopic impression in the brain after acquiring the information with the difference. The virtual reality system brings an immersive game and learning environment for people through a VR technology and VR head display equipment.

In current VR head shows equipment, the distance between most lens subassemblies and the display screen is fixed, unable focus regulation, the user to some myopia has led to the fact not little puzzlement like this, because I can't wear glasses when wearing VR eyes, lead to can take place to focus inaccurately when using, and then can't observe clear picture, can cause eye fatigue, adverse reactions such as brain vertigo in the long term, user experience has been reduced, influence normal use.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the utility model provides a but VR head of adjustable focus shows equipment to solve the unable focus of adjustment of current VR head and show equipment and lead to the unable clear picture of observing of near-sighted user of part when using, lead to the poor problem of user experience.

The technical scheme adopted by the utility model is as follows: a VR head display device with adjustable focal length comprises a box body, wherein a left display part and a right display part are symmetrically arranged in the box body, the left display part comprises a display screen and a lens assembly, the right display part comprises the display screen and the lens assembly, the left display part also comprises a left focusing mechanism, the right display part also comprises a right focusing mechanism, the left focusing mechanism comprises a left adjusting gear, one side of the left adjusting gear is provided with an annular boss, the inner side of the annular boss is provided with a thread, the right focusing mechanism comprises a right adjusting gear, one side of the right adjusting gear is also provided with an annular boss, the inner side of the annular boss is provided with a thread, the lens assembly comprises a lens support and a lens, the lens is fixedly arranged on the lens support, the lens support is provided with a thread matched with the annular boss, the lens support is connected with the annular boss through the threads.

The principle of the utility model is that a left focusing mechanism and a right focusing mechanism are added between a display screen and a lens assembly in the VR head display equipment capable of adjusting the focal length, in the left focusing mechanism, a left adjusting gear is rotated to drive an annular boss and a thread to rotate, and further a lens support in threaded connection with the annular boss is pushed to move, so that the distance between a lens in a left display part and the display screen is adjusted, and the focal length adjustment of the left display part is completed.

After the structure more than adopting, adjust the focus in the left display portion through left adjustment mechanism, adjust the focus in the right display portion through right adjustment mechanism, not only realized the focus adjustment to the first display device of VR, can also carry out different regulation to the focus of the left and right sides respectively for the user that the myopia number of degrees is different also can be convenient adjust into own comfortable focus, improved user experience.

Preferably, the lens assembly further comprises a guide support, the guide support is fixedly mounted on the box body, a plurality of guide grooves are formed in the guide support, guide blocks matched with the guide grooves are arranged on the lens support, and the guide blocks are connected with the guide grooves in a sliding mode. Through the cooperation between the guide way on the guide bracket and the guide block, can lead to the direction of motion of lens support, when left side adjusting gear or right side adjusting gear are rotating like this, the seesaw can only take place with it complex lens support, and can not follow left side adjusting gear or right side adjusting gear and rotate, ensure that accommodation process is accurate effective.

Preferably, the left focusing mechanism further comprises a first fixing support, a cylindrical first boss is arranged on the first fixing support, and the left adjusting gear is rotatably connected with the first boss through a bearing; the right focusing mechanism comprises a second fixing support, a cylindrical second boss is arranged on the second fixing support, and the right adjusting gear is rotatably connected with the second boss through a bearing. First fixed bolster is used for installing left adjusting gear, and the setting of bearing can make left adjusting gear more smooth and easy rotating the in-process, reduces the resistance received in accommodation process, and then improves the effect of adjusting, and on the same principle, the second fixed bolster is connected with right adjusting gear with the same structure, also ensures that right adjustment mechanism can be smooth and easy carries out work.

Preferably, the box body is internally provided with a driving motor, the output end of the driving motor is connected with an output gear, the output gear is connected with the left focusing mechanism through a first gear set, the output gear is connected with the right focusing mechanism through a second gear set, and the box body is provided with a switch for controlling the driving motor to rotate forwards or backwards. The left focusing mechanism or the right focusing mechanism is adjusted through the driving motor, the adjusting process can be easier, the adjusting process is more accurate, and the switch for forward rotation or reverse rotation of the driving motor is installed on the box body, so that the switch for the driving motor is more convenient.

Preferably, the first gear set comprises a first fixing shaft, a first sliding sleeve and a first gear, the first fixing shaft is fixedly connected to the box body, the first sliding sleeve is slidably connected to the outer side of the first fixing shaft, the first gear is rotatably connected to the first sliding sleeve, the second gear set comprises a second fixing shaft, a second sliding sleeve and a second gear, the second fixing shaft is fixedly connected to the box body, the second sliding sleeve is slidably connected to the outer side of the second fixing shaft, and the second gear is rotatably connected to the second sliding sleeve. The first gear is arranged on the first sliding sleeve, so that the first gear can rotate around the first fixed shaft and can horizontally move along the arrangement direction of the first fixed shaft along with the first sliding sleeve, the first gear is always meshed with the left adjusting gear in the moving process of the first gear, the first gear can be meshed with or separated from the output gear of the driving motor by adjusting the position of the first sliding sleeve, similarly, the second gear and the second sliding sleeve adopt the same arrangement, the second gear is always meshed with the right adjusting gear in the moving process of the second gear, the second gear can be meshed with or separated from the output gear by adjusting the position of the second sliding sleeve, and the meshing state between the output gear and the left adjusting gear or the right adjusting gear can be flexibly adjusted by the arrangement, so that the left focusing mechanism or the right adjusting mechanism can be respectively adjusted, thereby realizing the adjustment of different focal lengths.

Preferably, the first gear set further includes a third gear mounted on the first sliding sleeve, the third gear rotates together with the first gear, and the second gear set further includes a fourth gear mounted on the second sliding sleeve, the fourth gear rotates together with the second gear. Just can mesh with output gear through third gear, fourth gear's setting, the position of adjustment third gear, fourth gear that like this can be more nimble, and then be convenient for mesh mutually with output gear.

Preferably, the output gear of the driving motor is a bevel gear, and the third gear and the fourth gear are also bevel gears. The third gear, the fourth gear and the output gear are set to be bevel gears, so that meshing in the motion process can be facilitated, and the meshing efficiency is improved.

Preferably, the first fixing shaft is further sleeved with a first poking rod, the first poking rod is abutted to the first sliding sleeve, the second fixing shaft is further sleeved with a second poking rod, the second poking rod is abutted to the second sliding sleeve, the box body is provided with two adjusting holes, and the first poking rod and the second poking rod respectively extend to the outer side of the box body through one of the adjusting holes. The first poke rod can be convenient for adjust the meshing relation between the first gear set and the output gear, the second poke rod can be convenient for adjust the meshing relation between the second gear set and the output gear, and the first poke rod and the second poke rod extend to the outer side of the box body through the adjusting holes so that the adjusting process can be more convenient and faster.

Preferably, the first fixing shaft is sleeved with a first elastic piece, one end of the first elastic piece is abutted against the box body, the other end of the first elastic piece is abutted against the first sliding sleeve, the second fixing shaft is sleeved with a second elastic piece, one section of the second elastic piece is abutted against the box body, and the other end of the second elastic piece is abutted against the second sliding sleeve. The first poke rod and the second poke rod can push the first sliding sleeve and the second sliding sleeve to move by poking the first poke rod and the second poke rod, so that the third gear and the fourth gear are meshed with the output gear, the first poke rod and the second poke rod are reset after adjustment is completed, the first sliding sleeve and the second sliding sleeve are reset under the elastic action of the first elastic piece and the second elastic piece at the moment, and the third gear and the fourth gear are separated from the output gear, and the output gear is ensured not to influence the first gear or the second gear after adjustment is completed.

Preferably, a first guide rod and a second guide rod are further arranged in the box body, a first guide hole is formed in the first poke rod and is connected to the first guide rod in a sliding mode, a second guide hole is formed in the second poke rod and is connected to the second guide rod in a sliding mode. The first guide rod guides the first poke rod, so that the first poke rod is prevented from shifting or rotating in the movement process, the second guide rod guides the second poke rod, the second poke rod is prevented from shifting or rotating in the movement process, and the stability of the whole device is improved.

Drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of a VR head display device with adjustable focal length according to the present invention.

FIG. 2 is a schematic front view of a VR head display device with adjustable focal length according to the present invention.

FIG. 3 is a schematic sectional view of "A-A" in FIG. 2 in example 1.

Fig. 4 is an exploded view of the structure of the left display portion.

Fig. 5 is a schematic cross-sectional view of the left display portion.

FIG. 6 is a schematic front view of an embodiment 2 of a VR head display device with adjustable focal length according to the present invention.

FIG. 7 is a schematic sectional view of "A-A" in FIG. 2 in example 2.

FIG. 8 is a schematic cross-sectional view taken along line B-B in FIG. 7.

Wherein, 1, a box body; 1.1, a front panel; 2. a display screen; 3. a lens assembly; 3.1, a lens support; 3.2, a lens; 3.3, a guide bracket; 3.4, a guide block; 3.5, a guide groove; 4. a left focusing mechanism; 4.1, a left adjusting gear; 4.2, a first fixed bracket; 4.3, a first boss; 5. a right focus mechanism; 5.1, a right adjusting gear; 5.2, a second fixed bracket; 5.3, a second boss; 6. a drive motor; 6.1, an output gear; 7. a first gear set; 7.1, a first fixed shaft; 7.2, a first sliding sleeve; 7.3, a first gear; 7.4, a third gear; 7.5, a first poke rod; 7.6, a first elastic piece; 7.7, a first guide rod; 8. a second gear set; 8.1, a second fixed shaft; 8.2, a second sliding sleeve; 8.3, a second gear; 8.4, a fourth gear; 8.5, a second poke rod; 8.6, a second elastic piece; 8.7 and a second guide rod.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

Example 1

According to the attached drawings 1-5 of the specification, the utility model provides a VR head display device with adjustable focal length, which comprises a box body 1, wherein a left display part and a right display part are symmetrically arranged on the inner side of the box body 1, the left display part comprises a display screen 2, a lens 3.2 assembly 3 and a left focusing mechanism 4, the right display part also comprises the display screen 2, the lens 3.2 assembly 3 and the right focusing mechanism 5, wherein the left display part comprises a left adjusting gear 4.1, one side of the left adjusting gear 4.1 is provided with an annular boss, the inner side of the annular boss is provided with internal threads, the display part comprises a right adjusting gear 5.1, one side of the right adjusting gear 5.1 is also provided with an annular boss which is the same as the left adjusting gear 4.1, the inner side of the annular boss is provided with internal threads, the lens 3.2 assembly 3 comprises a lens support 3.1, a lens 3.2 and a guide support 3.3, the guide support 3 is in a cylindrical shape with a through middle part, wherein, four guide grooves 3.5 are arranged on the inner side wall of the guide support 3.3, one end of the guide support 3.3 is fixedly connected with the box body 1, the lens support 3.1 is cylindrical with a through middle part, wherein, the lens 3.2 is fixedly connected with one end of the lens support 3.1, the other end of the lens support 3.1 is provided with an external thread matched with the internal thread of the annular boss, and the lens support 3.1 is connected with the annular boss through a thread; the outer side of the lens support 3.1 is also provided with four guide blocks 3.4 matched with the guide grooves 3.5, the guide blocks 3.4 are matched with the guide grooves 3.5 one by one, and the guide blocks 3.4 are connected in the guide grooves 3.5 in a sliding manner. When the left adjusting gear 4.1 or the right adjusting gear 5.1 rotates, the corresponding lens support 3.1 in the left display part or the right display part moves back and forth under the action of the screw thread, so that the distance between the lens 3.2 and the display screen 2 is changed, and the focal length is adjusted.

Still including first fixed bolster 4.2 in left focusing mechanism 4, be provided with annular first boss 4.3 on first fixed bolster 4.2, left side adjusting gear 4.1 rotates through the bearing and connects on first boss 4.3, still including second fixed bolster 5.2 in right focusing mechanism 5, be provided with annular second boss 5.3 on second fixed bolster 5.2, right side adjusting gear 5.1 rotates through the bearing and connects on second boss 5.3. Left side adjusting gear 4.1, right adjusting gear 5.1 can make left adjusting gear 4.1 and right adjusting gear 5.1 more smooth and easy at the rotation in-process on connecting first boss 4.3, second boss 5.3 respectively through the bearing, and it is more light accurate in the accommodation process.

Its theory of operation is, when needs carry out focus adjustment, through rotatory left adjusting gear 4.1, just can take place to set up the linear motion of direction along guide way 3.5 through the lens support 3.1 that screw thread and left adjusting gear 4.1 are connected, lens 3.2 in the drive left display portion is close to or keeps away from display screen 2, and then accomplish the focus adjustment of left display portion, equally, through rotatory right adjusting gear 5.1, just also can drive lens support 3.1 in the right display portion and take place to set up the linear motion of direction along guide way 3.5, and then carry out focus adjustment to right display portion.

Example 2

According to the drawings 6-8 of the specification, wherein in order to more conveniently show the internal structure thereof, the front panel 1.1 in the case 1 is hidden in fig. 6, in this embodiment, on the basis of embodiment 1, the inside of the case 1 is fixedly provided with the driving motor 6 through bolts, the output end of the driving motor 6 is connected with the output gear 6.1, the outside of the case 1 is provided with the switch for controlling the forward rotation or reverse rotation of the driving motor 6, the case 1 is further provided with the first gear set 7 and the second gear set 8, wherein the first gear set 7 comprises a first fixed shaft 7.1, a first sliding sleeve 7.2, a first gear 7.3 and a third gear 7.4, the first fixed shaft 7.1 is fixedly connected to the case 1, the first sliding sleeve 7.2 is sleeved outside the first fixed shaft 7.1 and is slidably connected with the first fixed shaft 7.1, the first gear 7.3 and the third gear 7.4 are connected to the first sliding sleeve 7.2 through keys, the second sliding sleeve 7.2 is rotated along the first fixed shaft 7.1 along with the first sliding sleeve 7.2, wherein the width of the first gear 7.3 is larger than or equal to the width of the left adjusting gear 4.1, when the first sliding sleeve 7.2 moves on the first fixed shaft 7.1, the first gear 7.3 keeps the meshing state with the left adjusting gear 4.1, when the first sliding sleeve 7.2 slides on the first fixed shaft 7.1, when moving towards the output gear 6.1, the third gear 7.4 is meshed with the output gear 6.1, when the first sliding sleeve 7.2 moves away from the output gear 6.1, the third gear 7.4 is separated from the output gear 6.1, similarly, the second gear set 8 comprises a second fixed shaft 8.1, a second sliding sleeve 8.2, a second gear 8.3 and a fourth gear 8.4, the second fixed shaft 8.1 is fixed, the second sliding sleeve 8.1 is fixedly connected on the box body, the second sliding sleeve 8.2 is sleeved on the outside of the second fixed shaft 8.1 and is connected with the second fixed shaft 8.1, the second gear 8.3 and the fourth gear 8.4 are connected to the second sliding sleeve 8.2 through keys, and rotate along the second fixed shaft 8.1 following the second sliding sleeve 8.2, wherein the width of the second gear 8.3 is larger than that of the right adjusting gear 5.1, when the second sliding sleeve 8.2 moves on the second fixed shaft 8.1, the second gear 8.3 keeps the meshing state with the right adjusting gear 5.1, when the second sliding sleeve 8.2 slides on the second fixed shaft 8.1, when moving towards the output gear 6.1, the fourth gear 8.4 meshes with the output gear 6.1, when the second sliding sleeve 8.2 moves away from the output gear 6.1, the fourth gear 8.4 separates from the output gear 6.1. Through the arrangement, the meshing state of the first gear set 7, the second gear set 8 and the output gear 6.1 can be flexibly adjusted, the first gear set and the second gear set are meshed when the focal length is required to be adjusted, the first gear set and the second gear set are separated when the focal length is not required to be adjusted, and convenience is provided for the left side and the right side to be separately adjusted.

Wherein the output gear 6.1 on the driving motor 6 is a bevel gear, the third gear 7.4 and the fourth gear 8.4 are also bevel gears, and the arrangement of the output gear 6.1, the third gear 7.4 and the fourth gear 8.4 as bevel gears can be more convenient for engaging the third gear 7.4 with the output gear 6.1 or engaging the fourth gear 8.4 with the output gear 6.1 during the movement of the first sliding sleeve 7.2 or the second sliding sleeve 8.2.

In order to more conveniently control the movement of the first sliding sleeve 7.2 and the second sliding sleeve 8.2, a first poking rod 7.5 is further arranged on the first fixing shaft 7.1, a second poking rod 8.5 is further arranged on the second fixing shaft 8.1, the first poking rod 7.5 and the second poking rod 8.5 are identical in structure, one end of each circular sleeve is sleeved on the first fixing shaft 7.1 and the second fixing shaft 8.1 respectively, the first poking rod 7.5 is abutted to the first sliding sleeve 7.2, the second poking rod 8.5 is abutted to the second sliding sleeve 8.2, two adjusting holes are formed in the box body 1, and the other ends of the first poking rod 7.5 and the second poking rod 8.5 extend to the outer side of the box body 1 from the adjusting holes so that the first poking rod 7.5 and the second poking rod 8.5 can be operated from the outer side.

In order to ensure the stability of the first poking rod 7.5 and the second poking rod 8.5 in the adjusting process, a first guide rod 7.7 and a second guide rod 8.7 are fixedly arranged in the box body 1, a first guide hole matched with the first guide rod 7.7 is further formed in the first poking rod 7.5, a second guide hole matched with the second guide rod 8.7 is formed in the second poking rod 8.5, and when the first poking rod 7.5 and the second poking rod 8.5 move, the first poking rod 7.5 and the second poking rod 8.5 can move more safely under the guide action of the first guide rod 7.7 and the second guide rod 8.7, so that the stability of the adjusting process is improved.

Meanwhile, a first elastic piece 7.6 is further sleeved on the first fixed shaft 7.1, one end of the first elastic piece 7.6 is abutted against the box body 1, the other end of the first elastic piece 7.6 is abutted against the first sliding sleeve 7.2, when the first poke rod 7.5 acts, the first sliding sleeve 7.2 is pushed to move, and the third gear 7.4 is meshed with the output gear 6.1, at the moment, the first elastic piece 7.6 is compressed, when the adjustment is completed, the first poke rod 7.5 is loosened, under the elastic action of the first elastic piece 7.6, the first sliding sleeve 7.2 is pushed, and then the third gear 7.4 is returned to the original position to be separated from the output gear 6.1, the automatic reset is completed, similarly, a second elastic piece 8.6 is further sleeved on the second fixed shaft 8.1, one end of the second elastic piece 8.6 is abutted against the box body 1, the other end of the second elastic piece 8.6 is abutted against the second sliding sleeve 8.2, and when the second poke rod moves in a sliding manner, and the fourth gear 8.4 is meshed with the output gear 6.1, at this time, the second elastic piece 8.6 is compressed, and when the adjustment is completed, after the second poke rod 8.5 is loosened, under the elastic action of the second elastic piece 8.6, the second sliding sleeve 8.2 is pushed, and then the fourth gear 8.4 returns to the original position to be separated from the output gear 6.1, and the automatic reset is completed.

Directional phrases used in this disclosure, such as "upper," "lower," "left," "right," and the like, refer only to the direction as illustrated with reference to fig. 3 of the specification and therefore, are used in order to better and more clearly describe and understand the present invention and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the present invention.

The foregoing has described preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary, and various changes made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims

1. A VR head display device with adjustable focal length comprises a box body, a left display part and a right display part are symmetrically arranged in the box body, the left display part comprises a display screen and a lens assembly, the right display part comprises a display screen and a lens assembly, it is characterized in that the left display part also comprises a left focusing mechanism, the right display part also comprises a right focusing mechanism, the left focusing mechanism comprises a left adjusting gear, the right focusing mechanism comprises a right adjusting gear, the side surfaces of the left adjusting gear and the right adjusting gear are both provided with an annular boss, the inner side of the annular boss is provided with threads, the lens assembly comprises a lens support and a lens, the lens is fixedly arranged on the lens support, the lens support is provided with threads matched with the annular boss, and the lens support is connected with the annular boss through the threads.

2. The VR head display device with adjustable focal length of claim 1, wherein the lens assembly further comprises a guide bracket, the guide bracket is fixedly mounted on the box body, a plurality of guide grooves are formed in the guide bracket, a guide block matched with the guide grooves is arranged on the lens bracket, and the guide block is slidably connected in the guide grooves.

3. The VR head display device with adjustable focal length of claim 2, wherein the left focusing mechanism further comprises a first fixing bracket, the first fixing bracket is provided with a first annular boss, and the left adjusting gear is rotatably connected with the first boss through a bearing; the right focusing mechanism comprises a second fixing support, an annular second boss is arranged on the second fixing support, and the right adjusting gear is rotatably connected with the second boss through a bearing.

4. The VR head display device with adjustable focal length of claim 3, wherein a driving motor is further arranged in the box body, an output gear is connected to an output end of the driving motor, the output gear is connected with the left focusing mechanism through a first gear set, the output gear is connected with the right focusing mechanism through a second gear set, and a switch for controlling the driving motor to rotate forwards or backwards is mounted on the box body.

5. The VR head display device of claim 4, wherein the first gear set includes a first fixed shaft fixedly connected to the case, a first sliding sleeve slidably connected to an outer side of the first fixed shaft, a first gear rotatably connected to the first sliding sleeve, and the second gear set includes a second fixed shaft fixedly connected to the case, a second sliding sleeve slidably connected to an outer side of the second fixed shaft, and a second gear rotatably connected to the second sliding sleeve.

6. The adjustable focus VR head display of claim 5 wherein the first gear set further includes a third gear mounted on the first sliding sleeve, the third gear rotating with the first gear, the second gear set further includes a fourth gear mounted on the second sliding sleeve, the fourth gear rotating with the second gear.

7. The VR head display device of claim 6, wherein the output gear of the drive motor is a bevel gear, and the third and fourth gears are bevel gears.

8. The VR head display device with adjustable focal length of claim 5, wherein a first poke rod is further sleeved on the first fixed shaft and abuts against the first sliding sleeve, a second poke rod is further sleeved on the second fixed shaft and abuts against the second sliding sleeve, two adjusting holes are formed in the box body, and the first poke rod and the second poke rod respectively extend to the outer side of the box body through one of the adjusting holes.

9. The VR head display device with adjustable focal length of claim 8, wherein a first elastic member is sleeved on the first fixed shaft, one end of the first elastic member abuts against the box body, the other end of the first elastic member abuts against the first sliding sleeve, a second elastic member is sleeved on the second fixed shaft, one section of the second elastic member abuts against the box body, and the other end of the second elastic member abuts against the second sliding sleeve.

10. The VR head display device with adjustable focal length of claim 8, wherein a first guide rod and a second guide rod are further arranged in the box body, a first guide hole is formed in the first poke rod and is slidably connected to the first guide rod, a second guide hole is formed in the second poke rod and is slidably connected to the second guide rod.