Head-mounted display devices

Abstract

The present invention discloses a head-mounted display device, comprising a bracket, two lens barrels, a headband, and an adjustment structure. The two lens barrels are spaced apart along a first direction and movably connected to the bracket. The headband is located on the same side of the two lens barrels and movably connected to the bracket. The adjustment structure comprises a drive assembly, a first transmission assembly, a second transmission assembly, and an adjustment assembly. The first transmission assembly is connected to the bracket and is respectively in transmission connection with the two lens barrels. The second transmission assembly is connected to the bracket and is in transmission connection with the headband. The adjustment assembly is movably connected to the bracket and is in transmission connection with the first transmission assembly and / or the second transmission assembly. The drive assembly is disposed on the bracket and is in transmission connection with the adjustment assembly. The present invention aims to provide a head-mounted display device capable of switchable adjustment. The head-mounted display device can not only switch between ER and IPD adjustment, but also simultaneously adjust ER and IPD, while effectively simplifying the structure.

Description

Technical Field

[0001] The present invention relates to the technical field of head-mounted display, and in particular to a head-mounted display device. Background Art

[0002] With the development of virtual reality and augmented reality technologies, more and more head-mounted display devices have become widely used. VR (Virtual Reality) technology is a computer simulation system that can create and experience a virtual world. It uses computers to generate a simulated environment and immerse the user in it. VR technology uses real-life data, electronic signals generated by computer technology, and combines them with various output devices to transform them into phenomena that people can experience. With the popularization of various smart head-mounted devices, users have higher requirements for head-mounted devices to be miniaturized, lightweight, easy to adjust, and comfortable to wear.

[0003] Interpupillary distance (IPD) is short for pupil distance. Eye relief (ER) is the distance between the lens barrel and the forehead. Since ER and IPD vary from person to person, adjusting them is crucial. Previously, separate adjustment mechanisms were typically used to adjust ER or IPD, resulting in complex structures and limited flexibility. Summary of the Invention

[0004] The main purpose of the present invention is to provide a head-mounted display device, aiming to provide a head-mounted display device that can realize switchable adjustment. The head-mounted display device can not only realize the switch of ER or IPD adjustment, but also realize the simultaneous adjustment of ER and IPD, and effectively simplify the structure.

[0005] To achieve the above object, the present invention provides a head-mounted display device, comprising:

[0006] Bracket;

[0007] Two lens barrels, the two lens barrels are spaced apart along a first direction and movably connected to the bracket;

[0008] A headband, located on the same side of the two lens barrels and movably connected to the bracket; and

[0009] An adjustment structure comprising a drive assembly, a first transmission assembly, a second transmission assembly, and an adjustment assembly, wherein the first transmission assembly is connected to the bracket and is respectively in transmission connection with the two lens barrels, the second transmission assembly is connected to the bracket and is in transmission connection with the headband, the adjustment assembly is movably connected to the bracket and is in transmission connection with the first transmission assembly and / or the second transmission assembly, and the drive assembly is provided on the bracket and is in transmission connection with the adjustment assembly;

[0010] The head-mounted display device has a first state in which the adjustment component is transmission-connected to the first transmission component, a second state in which the adjustment component is transmission-connected to the second transmission component, and a third state in which the adjustment component is transmission-connected to the first transmission component and the second transmission component;

[0011] In the first state, the driving assembly drives the adjusting assembly to drive the first transmission assembly to rotate, so that the two lens barrels move closer to or farther from each other along the first direction;

[0012] In the second state, the driving component drives the adjusting component to drive the second transmission component to rotate, so as to move the headband closer to or away from the bracket;

[0013] In the third state, the driving component drives the adjusting component and simultaneously drives the first transmission component and the second transmission component to rotate, so that the two lens barrels move closer to or farther away from each other along the first direction, and the headband moves closer to or farther away from the bracket.

[0014] In one embodiment, the first transmission assembly includes:

[0015] A driving gear, the driving gear is rotatably connected to the bracket and is in transmission connection with the adjustment assembly, the lens barrel is provided with a first rack, the driving gear is meshed with the first rack; and

[0016] A driven gear, the driven gear being rotatably connected to the bracket and meshing with the driving gear, the other lens barrel being provided with a second rack, the driven gear being meshing with the second rack;

[0017] In the first state and the third state, the driving assembly drives the adjusting assembly to rotate the driving gear and the driven gear, so that the driving gear and the driven gear drive the first rack and the second rack to drive the two lens barrels to move closer to or away from each other along the first direction.

[0018] In one embodiment, a direction in which the headband approaches or moves away from the bracket is defined as a second direction, the first rack and the second rack are both extended along the first direction, and the first rack and the second rack are staggered along the second direction;

[0019] And / or, the width of the driving gear along its axial direction is greater than the width of the first rack, and the width of the driven gear along its axial direction is greater than the width of the second rack.

[0020] In one embodiment, the second transmission assembly includes:

[0021] a connecting shaft, one end of which is connected to the bracket;

[0022] a transmission gear, the transmission gear being rotatably connected to an end of the connecting shaft away from the bracket; and

[0023] A screw, one end of which is connected to the transmission gear, the other end of which is provided with a thread, the head having a threaded hole, the screw passing through the threaded hole and being threadedly connected to the head;

[0024] In which, the screw is defined to extend along the second direction. In the second state and the third state, the driving component drives the adjusting component to rotate the transmission gear and the screw, so that the headband moves closer to or away from the bracket along the second direction.

[0025] In one embodiment, the connecting shaft and the screw are coaxially arranged;

[0026] And / or, the driving gear is movably sleeved on the connecting shaft and is located between the transmission gear and the bracket, so that the driving gear and the transmission gear are coaxially arranged;

[0027] And / or, the connecting shaft is provided with a rotation groove at one end adjacent to the transmission gear, the second transmission assembly further comprises a connecting head, the connecting head is rotatably sleeved on the connecting shaft and accommodated in the rotation groove, and the transmission gear is provided with two connecting columns on a side facing the connecting shaft, and the two connecting columns are connected to the connecting head via fasteners;

[0028] And / or, the transmission gear and the screw are an integrally formed structure.

[0029] In one embodiment, the bracket is provided with a sliding hole, and the adjustment assembly includes:

[0030] a movable shaft, one end of which is slidably inserted into the sliding hole and extends along the second direction;

[0031] a gear member, said gear member being sleeved on said movable shaft and being in transmission connection with said driving assembly; and

[0032] a toggle member, one end of which is connected to the movable shaft, and the other end of which is provided with a toggle portion;

[0033] The toggle portion is pushed so that the toggle member drives the movable shaft to move along the second direction, so that the gear member is meshed and connected with the first transmission assembly and / or the second transmission assembly.

[0034] In one embodiment, the gear member comprises:

[0035] a first gear, the first gear being sleeved on the movable shaft; and

[0036] a second gear, the second gear being sleeved on the movable shaft and spaced apart from the first gear, and being located between the first gear and the bracket;

[0037] Wherein, in the first state, the second gear is meshed and connected with the first transmission assembly, and is in transmission connection with the drive assembly;

[0038] In the second state, the first gear is meshed with the second transmission assembly and is in transmission connection with the drive assembly;

[0039] In the third state, the second gear is meshed and connected with the first transmission assembly, and the first gear is meshed and connected with the second transmission assembly, and the second gear or the first gear is transmission-connected with the drive assembly.

[0040] In one embodiment, the gear member comprises:

[0041] a first gear, the first gear being sleeved on the movable shaft;

[0042] a second gear, the second gear being sleeved on the movable shaft and located between the first gear and the bracket; and

[0043] a third gear, the third gear being sleeved on the movable shaft and located between the second gear and the bracket;

[0044] Wherein, in the first state, the third gear is meshed and connected with the first transmission assembly, and is in transmission connection with the drive assembly;

[0045] In the second state, the first gear is meshed with the second transmission assembly and is in transmission connection with the drive assembly;

[0046] In the third state, the second gear is meshed and connected with the first transmission assembly and is in transmission connection with the drive assembly, and the first gear is meshed and connected with the second transmission assembly.

[0047] In one embodiment, the third gear is rotatably sleeved on the movable shaft;

[0048] And / or, the width of the first gear along its axial direction is greater than the vertical distance between the drive assembly and the second transmission assembly, and smaller than the vertical distance between the first transmission assembly and the second transmission assembly;

[0049] And / or, the second direction is perpendicular to the bracket and is arranged perpendicular to the first direction.

[0050] In one embodiment, the bracket is provided with a mounting platform, the driving assembly includes a handwheel and a worm, the worm extends along the first direction, the handwheel is connected to one end of the worm, and the other end of the worm rotates through the mounting platform and is provided with helical teeth, and the helical teeth are meshed with the adjustment assembly;

[0051] And / or, the bracket is provided with a guide shaft, the guide shaft is extended along the first direction, each of the lens barrels is provided with a guide hole, and the guide shaft is slidably inserted into the guide hole;

[0052] And / or, the bracket is provided with a guide column, the guide column extends toward the headband and is arranged perpendicular to the bracket, the headband is provided with a guide column corresponding to the guide column, the guide column is provided with a sliding hole, and the guide column slides through the sliding hole.

[0053] The head-mounted display device of the technical solution of the present invention is configured such that the lens barrel and the head-mounted device are movably arranged on a bracket, and an adjustment structure is provided, so that the first transmission component of the adjustment structure is connected to the bracket and is respectively transmission-connected to the two lens barrels, the second transmission component of the adjustment structure is connected to the bracket and is transmission-connected to the head-mounted device, the adjustment component of the adjustment structure is movably connected to the bracket and is transmission-connected to the first transmission component and / or the second transmission component, and the driving component of the adjustment structure is provided on the bracket and is transmission-connected to the adjustment component. By utilizing the adjustment component, the head-mounted display device has a first state in which the adjustment component is transmission-connected to the first transmission component, a second state in which the adjustment component is transmission-connected to the second transmission component, and a state in which the adjustment component is simultaneously The third state is connected to the first transmission assembly and the second transmission assembly in a transmission manner. In the first state, the drive assembly drives the adjustment assembly to rotate the first transmission assembly to move the two lens barrels closer to or farther from each other in the first direction, thereby achieving IPD adjustment. In the second state, the drive assembly drives the adjustment assembly to rotate the second transmission assembly to move the headband closer to or farther from the bracket, thereby achieving ER adjustment. In the third state, the drive assembly drives the adjustment assembly to simultaneously rotate the first transmission assembly and the second transmission assembly, thereby achieving both closer to or farther from each other in the first direction and closer to or farther from the bracket, that is, achieving both IPD and ER adjustment. The head-mounted display device of the present invention can achieve free switching adjustment, not only achieving switching between ER or IPD adjustment, but also achieving simultaneous adjustment of ER and IPD, and effectively simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0055] Figure 1 A schematic structural diagram of a head-mounted display device according to an embodiment of the present invention;

[0056] Figure 2 This is an exploded schematic diagram of a head-mounted display device according to an embodiment of the present invention;

[0057] Figure 3 A schematic cross-sectional view of a head-mounted display device according to an embodiment of the present invention;

[0058] Figure 4 This is a structural diagram of a head-mounted display device without the headband in one embodiment of the present invention;

[0059] Figure 5A schematic structural diagram of an adjustment structure in one embodiment of the present invention;

[0060] Figure 6 This is a partial structural diagram of the second transmission assembly in one embodiment of the present invention;

[0061] Figure 7 Schematic diagram of a partial structure of an adjustment component in one embodiment of the present invention.

[0062] Description of Figure Numbers:

[0063]

[0064] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0066] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0067] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0068] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0069] With the development of virtual reality and augmented reality technologies, more and more head-mounted display devices have become widely used. VR (Virtual Reality) technology is a computer simulation system that can create and experience a virtual world. It uses computers to generate a simulated environment and immerse the user in it. VR technology uses real-life data, electronic signals generated by computer technology, and combines them with various output devices to transform them into phenomena that people can experience. With the popularization of various smart head-mounted devices, users have higher requirements for head-mounted devices to be miniaturized, lightweight, easy to adjust, and comfortable to wear.

[0070] Interpupillary distance (IPD) is short for pupil distance. Eye relief (ER) is the distance between the lens barrel and the forehead. Since ER and IPD vary from person to person, adjusting them is crucial. Previously, separate adjustment mechanisms were typically used to adjust ER or IPD, resulting in complex structures and limited flexibility.

[0071] Based on the above concepts and problems, the present invention proposes a head-mounted display device 100. It is understandable that the head-mounted display device 100 is applied to a head-mounted device, which can be a VR device or other smart head-mounted device, etc., which is not limited here.

[0072] Please refer to Figures 1 to 7As shown, in an embodiment of the present invention, the head-mounted display device 100 includes a bracket 1, two lens barrels 2, a headband 3 and an adjustment structure. The two lens barrels 2 are spaced apart along a first direction and are movably connected to the bracket 1. The headband 3 is located on the same side of the two lens barrels 2 and is movably connected to the bracket 1. The adjustment structure includes a driving component 4, a first transmission component 5, a second transmission component 6 and an adjustment component 7. The first transmission component 5 is connected to the bracket 1 and is respectively connected to the two lens barrels 2 in a transmission manner. The second transmission component 6 is connected to the bracket 1 and is connected to the headband 3 in a transmission manner. The adjustment component 7 is movably connected to the bracket 1 and is connected to the first transmission component 5 and / or the second transmission component 6 in a transmission manner. The driving component 4 is provided on the bracket 1 and is connected to the adjustment component 7 in a transmission manner. 00 has a first state in which the adjustment component 7 is transmission-connected to the first transmission component 5, a second state in which the adjustment component 7 is transmission-connected to the second transmission component 6, and a third state in which the adjustment component 7 is transmission-connected to the first transmission component 5 and the second transmission component 6; in the first state, the driving component 4 drives the adjustment component 7 to drive the first transmission component 5 to rotate, so that the two lens barrels 2 are closer to or farther away from each other along the first direction; in the second state, the driving component 4 drives the adjustment component 7 to drive the second transmission component 6 to rotate, so that the headband 3 is closer to or farther away from the bracket 1; in the third state, the driving component 4 drives the adjustment component 7 and drives the first transmission component 5 and the second transmission component 6 to rotate, so that the two lens barrels 2 are closer to or farther away from each other along the first direction, and the headband 3 is closer to or farther away from the bracket 1.

[0073] In this embodiment, the bracket 1 is used to mount, secure, and support the two lens barrels 2, the headband 3, and other components such as the adjustment mechanism. Specifically, the bracket 1 provides a mounting structure for the two lens barrels 2, the headband 3, and other components such as the adjustment mechanism. It is understood that the bracket 1 may be a mounting frame, a mounting frame, a mounting plate, a rack, a lens frame, or other structures, without limitation herein.

[0074] As will be understood, the two lens barrels 2 are movably connected to the bracket 1 and spaced apart along the first direction. The lens barrels 2 and bracket 1 may be connected by sliding, rolling, or other movably connected means, without limitation herein. The lens barrels 2 may be components of a head-mounted device that allow the user to view through their glasses, without limitation herein. The headband 3 is movably connected to the bracket 1 and is located on the same side of the two lens barrels 2. Optionally, the headband 3 is located above the two lens barrels 2. The headband 3 and bracket 1 may be connected by sliding, rolling, or other movably connected means, without limitation herein.

[0075] In this embodiment, an adjustment structure is provided, and the adjustment structure is provided as a drive component 4, a first transmission component 5, a second transmission component 6 and an adjustment component 7, so that the first transmission component 5 is connected to the two lens barrels 2 for transmission, and the second transmission component 6 is connected to the headband 3 for transmission, so that the drive component 4 provides driving force to the first transmission component 5 and the second transmission component 6 through the adjustment component 7.

[0076] It can be understood that by setting the adjustment component 7, the adjustment component 7 can be used to transmit the driving force of the driving component 4 to the first transmission component 5 and / or the second transmission component 6, so that the head-mounted display device 100 can freely switch between different states through the adjustment component 7, thereby improving the user experience and simplifying the entire adjustment structure, thereby achieving the purpose of reducing the structural volume of the head-mounted display device 100.

[0077] In this embodiment, by switching and adjusting the adjustment component 7, the head-mounted display device 100 has a first state in which the adjustment component 7 is transmission-connected to the first transmission component 5, a second state in which the adjustment component 7 is transmission-connected to the second transmission component 6, and a third state in which the adjustment component 7 is transmission-connected to the first transmission component 5 and the second transmission component 6. In this way, in these three states, adjustment of the distance between the two lens barrels 2 (i.e., IPD adjustment), adjustment of the headband 3 (i.e., ER adjustment), and simultaneous adjustment of the distance between the two lens barrels 2 (i.e., IPD adjustment) and adjustment of the headband 3 (i.e., ER adjustment) are respectively achieved.

[0078] It should be noted that, in the first state, the driving component 4 drives the adjusting component 7 to drive the first transmission component 5 to rotate, so that the two lens barrels 2 are closer to or farther away from each other along the first direction; in the second state, the driving component 4 drives the adjusting component 7 to drive the second transmission component 6 to rotate, so that the headband 3 is closer to or farther away from the bracket 1; in the third state, the driving component 4 drives the adjusting component 7 to simultaneously drive the first transmission component 5 and the second transmission component 6 to rotate, so that the two lens barrels 2 are closer to or farther away from each other along the first direction, and the headband 3 is closer to or farther away from the bracket 1.

[0079] It is understood that the drive assembly 4 provides driving force to the first transmission assembly 5 / second transmission assembly 6 through the adjustment assembly 7. The drive assembly 4 can be a manual adjustment mechanism, such as a handwheel adjustment structure; the drive assembly 4 can also be an automatic adjustment mechanism, such as an electric drive structure such as a motor or cylinder drive, which is not limited here.

[0080] In this embodiment, the configuration of the adjustment assembly 7 enables the user to achieve a transmission connection with the first transmission assembly 5 / the second transmission assembly 6 through the adjustment assembly 7, thereby achieving different driving states. The adjustment assembly 7 can both transmit the driving force of the drive assembly 4 to the first transmission assembly 5 / the second transmission assembly 6 and switch the transmission connection with the first transmission assembly 5 / the second transmission assembly 6. It is understood that the switching of the transmission connection relationship between the adjustment assembly 7 and the first transmission assembly 5 / the second transmission assembly 6 can be achieved manually or by electronic control, which is not limited here.

[0081] It can be understood that the first transmission assembly 5 / the second transmission assembly 6 is used to transmit the driving force of the driving assembly 4 and convert it into power for the lens barrel 2 / the headband 3. The first transmission assembly 5 / the second transmission assembly 6 can be a gear structure, a gear and rack matching structure, or a cam and rack matching structure, etc., which is not limited here.

[0082] In this embodiment, the two lens barrels 2 are spaced apart along a first direction. After the driving force of the driving assembly 4 is transmitted to the first transmission assembly 5 via the adjustment assembly 7, the two lens barrels 2 can be driven or driven by the first transmission assembly 5 to move closer to or farther from each other along the first direction, thereby achieving IPD adjustment. The headband 3 is located on the same side of the two lens barrels 2. Optionally, the headband 3 is located above the two lens barrels 2. After the driving force of the driving assembly 4 is transmitted to the second transmission assembly 6 via the adjustment assembly 7, the headband 3 can be driven or driven by the second transmission assembly 6 to move closer to or farther from the bracket 1, thereby achieving ER adjustment.

[0083] It is understood that the first direction can be the direction of the line connecting the two lens barrels 2. That is, the first direction can be the direction in which the two lens barrels 2 are moving closer to each other along the line connecting the two lens barrels 2, or the direction in which the two lens barrels 2 are moving away from each other along the line connecting the two lens barrels 2, and this is not limited here. In this embodiment, the direction in which the headband 3 moves is defined as the second direction, and the second direction can be the direction in which the headband 3 moves closer to the bracket 1 or the direction in which the headband 3 moves away from the bracket 1.

[0084] Optionally, the second direction is perpendicular to the first direction. The arrangement direction of the two lens barrels 2 and the headband 3 is defined as a third direction, and the third direction is perpendicular to the second direction and the first direction, which is not limited here.

[0085] The head-mounted display device 100 of the present invention is configured such that the lens barrel 2 and the headband 3 are movably arranged on the bracket 1, and an adjustment structure is provided, so that the first transmission component 5 of the adjustment structure is connected to the bracket 1 and is respectively connected to the two lens barrels 2 in a transmission manner, the second transmission component 6 of the adjustment structure is connected to the bracket 1 and is connected to the headband 3 in a transmission manner, the adjustment component 7 of the adjustment structure is movably connected to the bracket 1 and is connected to the first transmission component 5 and / or the second transmission component 6 in a transmission manner, and the driving component 4 of the adjustment structure is provided on the bracket 1 and is connected to the adjustment component 7 in a transmission manner. By utilizing the adjustment component 7, the head-mounted display device 100 has a first state in which the adjustment component 7 is connected to the first transmission component 5 in a transmission manner, a second state in which the adjustment component 7 is connected to the second transmission component 6 in a transmission manner, and a state in which the adjustment component 7 is connected to the first transmission component 5 in a transmission manner, and a state in which the adjustment component 7 is connected to the second transmission component 6 in a transmission manner, and a state in which the adjustment component 7 is connected to the first transmission component 5 in a transmission manner. 7 is simultaneously connected to the first transmission assembly 5 and the second transmission assembly 6 in a third state. In the first state, the drive assembly 4 drives the adjustment assembly 7 to rotate the first transmission assembly 5, so that the two lens barrels 2 move closer to or farther from each other in the first direction, thereby achieving IPD adjustment. In the second state, the drive assembly 4 drives the adjustment assembly 7 to rotate the second transmission assembly 6, so that the headband 3 moves closer to or farther from the bracket 1, thereby achieving ER adjustment. In the third state, the drive assembly 4 drives the adjustment assembly 7 to simultaneously rotate the first transmission assembly 5 and the second transmission assembly 6, so that the two lens barrels 2 move closer to or farther from each other in the first direction, and the headband 3 moves closer to or farther from the bracket 1, that is, IPD adjustment and ER adjustment are achieved simultaneously. The head-mounted display device 100 of the present invention can achieve free switch adjustment, not only realizing switching between ER or IPD adjustment, but also realizing simultaneous adjustment of ER and IPD, and effectively simplifying the structure.

[0086] In one embodiment, the first transmission assembly 5 includes a driving gear 51 and a driven gear 52, the driving gear 51 is rotatably connected to the bracket 1 and is in transmission connection with the adjustment assembly 7, one lens barrel 2 is provided with a first rack 21, the driving gear 51 is meshed with the first rack 21, the driven gear 52 is rotatably connected to the bracket 1 and is meshed with the driving gear 51, and the other lens barrel 2 is provided with a second rack 22, the driven gear 52 is meshed with the second rack 22; wherein, in the first state and the third state, the driving assembly 4 drives the adjusting assembly 7 to drive the driving gear 51 to rotate, and drives the driven gear 52 to rotate, so that the driving gear 51 and the driven gear 52 drive the first rack 21 and the second rack 22 to drive the two lens barrels 2 to move closer to or away from each other along the first direction.

[0087] In this embodiment, if Figures 1 to 5As shown, by setting the first transmission component 5 as a driving gear 51 and a driven gear 52, the driving gear 51 and the driven gear 52 are engaged with each other, and the driving gear 51 is connected to the adjustment component 7, so that the driving force of the driving component 4 is transmitted to the driving gear 51 through the adjustment component 7, and then transmitted to the driven gear 52 by the driving gear 51, so as to realize the simultaneous movement of the driving gear 51 and the driven gear 52, thereby improving the synchronous driving effect.

[0088] It can be understood that in order to facilitate the transmission connection between the driving gear 51 and the driven gear 52 and the two lens barrels 2 respectively, the two lens barrels 2 are respectively provided with a rack structure, that is, one lens barrel 2 is provided with a first rack 21, and the driving gear 51 is meshed with the first rack 21, and the other lens barrel 2 is provided with a second rack 22, and the driven gear 52 is meshed with the second rack 22. In this way, the driving assembly 4 drives the adjusting assembly 7 to drive the driving gear 51 to rotate, and drives the driven gear 52 to rotate, so that the driving gear 51 and the driven gear 52 simultaneously drive the first rack 21 and the second rack 22 to drive the two lens barrels 2 to move closer to or away from each other along the first direction.

[0089] Optionally, the driving gear 51 and the driven gear 52 have the same structure; or, the number of teeth of the driving gear 51 and the number of teeth of the driven gear 52 are the same, which is not limited here.

[0090] To ensure that the driving gear 51 and the driven gear 52 mesh with each other and that the first rack 21 and the second rack 22 do not interfere with each other, the direction in which the headset 3 approaches or moves away from the bracket 1 is defined as the second direction. The first rack 21 and the second rack 22 both extend along the first direction, and the first rack 21 and the second rack 22 are offset along the second direction. Of course, the first rack 21 and the second rack 22 can also be located in the first direction at the same time. In this case, the diameter range of the driving gear 51 and the driven gear 52 can be adjusted to avoid interference, which is not limited here.

[0091] To facilitate the mutual meshing of the driving gear 51 and the driven gear 52, the axial width of the driving gear 51 is greater than the width of the first rack 21, and the axial width of the driven gear 52 is greater than the width of the second rack 22. It will be understood that the axial directions of the driving gear 51 and the driven gear 52 constitute the second direction, i.e., the width of the driving gear 51 is the width of the driving gear 51 along the second direction, and the width of the driven gear 52 is the width of the driven gear 52 along the second direction. In this embodiment, the driving gear 51 and the driven gear 52 are arranged along the first direction and meshed with each other.

[0092] In this embodiment, the driving gear 51 and the driven gear 52 drive the first rack 21 and the second rack 22 to drive the two lens barrels 2 to move closer to or away from each other along the first direction, which can be achieved by the forward rotation or reverse rotation of the driving assembly 4, which is not limited here. Optionally, the driving gear 51 and the driven gear 52 can be circular gear structures.

[0093] In one embodiment, the second transmission assembly 6 includes a connecting shaft 61, a transmission gear 62 and a screw 63. One end of the connecting shaft 61 is connected to the bracket 1, and the transmission gear 62 is rotatably connected to the end of the connecting shaft 61 away from the bracket 1. One end of the screw 63 is connected to the transmission gear 62, and the other end of the screw 63 is provided with a thread 631. The headband 3 is provided with a threaded hole 31. The screw 63 is passed through the threaded hole 31 and is threadedly connected to the headband 3; wherein, the screw 63 is defined to extend along the second direction. In the second state and the third state, the driving assembly 4 drives the adjusting assembly 7 to drive the transmission gear 62 to rotate, and drives the screw 63 to rotate, so that the headband 3 approaches or moves away from the bracket 1 along the second direction.

[0094] In this embodiment, if Figures 1 to 6 As shown, the transmission gear 62 is supported and mounted by the connecting shaft 61. The transmission gear 62 can optionally be a circular gear structure. The transmission gear 62 is located between the connecting shaft 61 and the screw 63. Optionally, the connecting shaft 61 and the screw 63 are coaxially arranged. In other words, the rotation center of the transmission gear 62 is coaxially arranged with the screw 63.

[0095] It can be understood that by providing a thread 631 on the screw 63 and providing a threaded hole 31 on the headband 3, the screw 63 is passed through the threaded hole 31 and is threadedly connected to the headband 3. In this way, the driving component 4 drives the adjustment component 7 to drive the transmission gear 62 to rotate, and drives the screw 63 to rotate, so that the headband 3 moves closer to or away from the bracket 1 along the second direction.

[0096] In this embodiment, the transmission gear 62 drives the screw 63 to rotate, so that the thread 631 of the screw 63 engages with the threaded hole 3 of the headband 3, so that the headband 3 moves toward or away from the bracket 1 along the second direction. The headband 3 can move toward or away from the bracket 1 by rotating the drive assembly 4 in the forward or reverse direction, which is not limited here.

[0097] In one embodiment, the driving gear 51 is movably mounted on the connecting shaft 61 and is located between the transmission gear 62 and the bracket 1, so that the driving gear 51 and the transmission gear 62 are coaxially arranged. As can be understood, such an arrangement can effectively simplify the structure and reduce the structure and size of the head-mounted display device 100.

[0098] In this embodiment, the connecting shaft 61 is provided with a limiting groove, and the driving gear 51 is rotatably sleeved on the connecting shaft 61 and is limited in the limiting groove, that is, the driving gear 51 does not drive the connecting shaft 61 to rotate when rotating.

[0099] Optionally, a rotating groove 611 is provided at one end of the connecting shaft 61 adjacent to the transmission gear 62, and the second transmission assembly 6 also includes a connecting head 64, which is rotatably sleeved on the connecting shaft 61 and accommodated in the rotating groove 611. Two connecting columns 621 are provided on the side of the transmission gear 62 facing the connecting shaft 61, and the two connecting columns 621 are connected to the connecting head 64 through fasteners.

[0100] In this embodiment, the transmission gear 62 is movably connected to the connecting shaft 61 through the connecting head 64, that is, when the transmission gear 62 rotates, it does not drive the connecting shaft 61 to rotate, and the transmission gear 62 is connected to the connecting head 64 and the connecting column 621 through the matching connection, which can achieve both installation and fixation, and can also achieve movable rotation, which is not limited here. Figure 6 As shown, the transmission gear 62 and the screw rod 63 are an integrally formed structure.

[0101] In one embodiment, the bracket 1 is provided with a sliding hole 11, and the adjustment component 7 includes a movable shaft 71, a gear member 72 and a toggle member 73. One end of the movable shaft 71 is slidably penetrated into the sliding hole 11 and extends along the second direction. The gear member 72 is sleeved on the movable shaft 71 and is transmission-connected to the drive component 4. One end of the toggle member 73 is connected to the movable shaft 71, and the other end of the toggle member 73 is provided with a toggle portion 731; wherein, pushing the toggle portion 731 causes the toggle member 73 to drive the movable shaft 71 to move along the second direction, so that the gear member 72 is meshed and connected with the first transmission component 5 and / or the second transmission component 6.

[0102] In this embodiment, if Figures 1 to 5 、 Figure 7 As shown, by providing a sliding hole 11 in the bracket 1, and sliding one end of the movable shaft 71 through the sliding hole 11, the movable shaft 71 is moved along the second direction under the action of the toggle member 73. It can be understood that by providing a gear member 72 on the movable shaft 71, the gear member 72 is used to transmit the driving force of the driving assembly 4 to the first transmission assembly 5 and / or the second transmission assembly 6.

[0103] It can be understood that the gear member 72 is in transmission connection with the driving assembly 4 , and the gear member 72 is meshedly connected with the driving gear 51 of the first transmission assembly 5 and / or the transmission gear 62 of the second transmission assembly 6 .

[0104] In one embodiment, the gear member 72 includes a first gear 721 and a second gear 722, the first gear 721 is sleeved on the movable shaft 71, the second gear 722 is sleeved on the movable shaft 71, and is spaced apart from the first gear 721, and the second gear 722 is located between the first gear 721 and the bracket 1; wherein, in the first state, the second gear 722 is meshed and connected with the first transmission component 5, and is transmission connected to the drive component 4; in the second state, the first gear 721 is meshed and connected with the second transmission component 6, and is transmission connected to the drive component 4; in the third state, the second gear 722 is meshed and connected with the first transmission component 5, and the first gear 721 is meshed and connected with the second transmission component 6, and the second gear 722 or the first gear 721 is transmission connected to the drive component 4.

[0105] It can be understood that the first gear 721 and the second gear 722 are coaxially arranged and are both sleeved on the movable shaft 71. Optionally, the movable shaft 71 is extended along the second direction.

[0106] In order to achieve the meshing connection between the second gear 722 and the driving gear 51 of the first transmission assembly 5, and the meshing connection between the first gear 721 and the transmission gear 62 of the second transmission assembly 6 in the third state, and to transmit the driving force of the driving assembly 4 to the driving gear 51 and the transmission gear 62 respectively, the first gear 721 and the second gear 722 rotate synchronously on the same axis, that is, the first gear 721 and the second gear 722 are both fixedly connected to the movable shaft 71. In other words, the movable shaft 71 can be movably provided in the sliding hole 11 along the second direction, and can also rotate around its axial direction, which is not limited here.

[0107] In this embodiment, a rotation limit groove is provided on the movable shaft 71, and the toggle member 73 is optionally rotatably sleeved on the movable shaft 71 and accommodated in the rotation limit groove, that is, the toggle member 73 does not rotate around its axial direction with the movable shaft 71, but the user can use the toggle member 73 to make the movable shaft 71 move along the second direction through the sliding hole 11, which is not limited here.

[0108] In another embodiment, Figure 2 and Figure 7As shown, the gear member 72 includes a first gear 721, a second gear 722 and a third gear 723. The first gear 721 is sleeved on the movable shaft 71, the second gear 722 is sleeved on the movable shaft 71 and is located between the first gear 721 and the bracket 1, and the third gear 723 is sleeved on the movable shaft 71 and is located between the second gear 722 and the bracket 1; wherein, in the first state, the third gear 723 is meshed and connected with the first transmission component 5 and is in transmission connection with the drive component 4; in the second state, the first gear 721 is meshed and connected with the second transmission component 6 and is in transmission connection with the drive component 4; in the third state, the second gear 722 is meshed and connected with the first transmission component 5 and is in transmission connection with the drive component 4, and the first gear 721 is meshed and connected with the second transmission component 6.

[0109] In this embodiment, the gear member 72 can be one gear, two gears, or three gears. In order to further reduce the structural volume of the head-mounted display device 100 and reduce the formation of the toggle member 73 driving the movable shaft 71 to move along the second direction, the gear member 72 includes multiple gears. Optionally, as Figure 2 、 Figure 5 、 Figure 7 As shown, the gear member 72 includes three gears, namely a first gear 721 , a second gear 722 and a third gear 723 .

[0110] It is understandable that in order to avoid the third gear 723 in the gear member 72 from getting stuck, the third gear 723 is rotatably sleeved on the movable shaft 71 , that is, when the third gear 723 rotates, the movable shaft 71 does not rotate therewith.

[0111] To facilitate meshing of the first gear 721 with both the drive assembly 4 and the transmission gear 62 of the second transmission assembly 6, the width of the first gear 721 along its axial direction is greater than the vertical distance between the drive assembly 4 and the second transmission assembly 6. It is understood that to prevent the first gear 721 from interfering with the driving gear 51 of the first transmission assembly 5, the width of the first gear 721 along its axial direction is less than the vertical distance between the first transmission assembly 5 and the second transmission assembly 6.

[0112] Optionally, the second direction is perpendicular to the bracket 1 and is arranged perpendicular to the first direction.

[0113] In one embodiment, the bracket 1 is provided with a mounting platform 12, and the driving component 4 includes a handwheel 41 and a worm 42, the worm 42 extends along a first direction, the handwheel 41 is connected to one end of the worm 42, and the other end of the worm 42 rotates through the mounting platform 12 and is provided with helical teeth 43, which are engaged with the adjustment component 7.

[0114] In this embodiment, if Figures 1 to 5As shown, by configuring the driving assembly 4 to have a handwheel 41 and a worm 42 structure, and providing helical teeth 43 on the worm 42, the worm 42 is driven to rotate along its axial direction by rotating the handwheel 41, so that the worm 42 drives the gear member 72 of the adjustment assembly 7 to rotate under the action of the helical teeth 43. It can be understood that by providing the helical teeth 43 on the worm 42, after the driving force of the helical teeth 43 of the worm 42 is transmitted to the driving gear 51 through the gear member 72, the driving gear 51 and the driven gear 52 respectively drive the first rack 21 and the second rack 22 to drive the two lens barrels 2 to move closer to or away from each other, thereby achieving self-locking, thereby preventing the two lens barrels 2 from rebounding after adjustment.

[0115] In one embodiment, if Figures 1 to 4 As shown, the bracket 1 is provided with a guide shaft 13 , which is extended along a first direction. Each lens barrel 2 is provided with a guide hole 23 , and the guide shaft 13 is slidably passed through the guide hole 23 .

[0116] In this embodiment, to improve the stability of the connection between the lens barrel 2 and the bracket 1, and to improve the balance during movement, the guide shaft 13 includes a plurality of guide shafts 13, the plurality of guide shafts 13 extending along the first direction, and the plurality of guide shafts 13 spaced apart along the third direction, which is not limited herein. Optionally, the guide shaft 13 includes two guide shafts 13, the two guide shafts 13 being respectively arranged above and below the lens barrel 2.

[0117] In one embodiment, if Figures 1 to 4 As shown, the bracket 1 is provided with a guide column 14, which extends toward the headband 3 and is arranged perpendicular to the bracket 1. The headband 3 is provided with a guide column 32 corresponding to the guide column 14, and the guide column 32 is provided with a sliding hole, and the guide column 14 slides through the sliding hole.

[0118] In this embodiment, a guide column 14 is provided on the bracket 1 and a guide column 32 is provided on the headband 3, so that the guide column 14 slides through the sliding hole of the guide column 32. On the one hand, the cooperation between the guide column 14 and the guide column 32 is used to guide the sliding of the headband 3, and on the other hand, the headband 3 is supported and installed.

[0119] As can be appreciated, the head-mounted display device 100 of the present invention utilizes the principle of a worm gear transmission, replacing the traditional intermediate handwheel adjustment mechanism. This effectively utilizes the structural space of the head-mounted display device while reducing the overall size of the head-mounted display device. The head-mounted display device 100 can adjust either the IPD or the ER independently, or both simultaneously, and also solves the problem of IPD rebound after adjustment.

[0120] In this embodiment, the first transmission assembly 5 is used to adjust the left-right distance of the lens barrel 2, and the second transmission assembly 6 is used to adjust the front-to-back distance between the lens barrel and the eye, that is, the exit pupil distance. The lens barrel 2 is provided with a guide shaft 13 on the top and bottom, which can slide left and right along it; the lens barrel 2 is also provided with a first rack 21 / a second rack 22. The first rack 21 and the second rack 22 on the left and right lens barrels 2 are designed to be staggered front and back along the second direction. The driving gear 51 and the driven gear 52 engaged therewith are similarly designed, that is, the driving gear 51 and the driven gear 52 can mesh with each other. The toggle member 73 is used to determine whether the ER and IPD work simultaneously. Toggling it back and forth separates the first gear 721 of the gear member 72 from the transmission gear 62, that is, only the IPD can be adjusted. Toggling it causes the second gear 722 of the gear member 72 to mesh with the driving gear 51, and the first gear 721 of the gear member 72 re-engages with the transmission gear 62, so that the IPD and ER can be adjusted simultaneously.

[0121] As can be understood, when handwheel 41 is rotated clockwise, worm 42 rotates clockwise, and gear 72 on adjustment assembly 7 rotates counterclockwise because second gear 722 meshes with worm 42, and first gear 721 is coaxial with third gear 723 / second gear 722. Clockwise rotation of driving gear 51 moves the lens barrel to the left, while counterclockwise rotation of driving gear 51 moves the right lens barrel to the right, thereby increasing the IPD.

[0122] The movable shaft 71 is inserted into the bracket 1 and can rotate. The first gear 721 and the second gear 722 can be understood as being integral with the shaft. Only the third gear 723 can rotate around the movable shaft 71. The purpose is to push the toggle member 73 forward to disengage the first gear 721 from the transmission gear 62 and the second gear 722 from the driving gear 51. At this time, the ER adjustment is disconnected, while the third gear 723 continues to mesh with the driving gear 51 and the worm 42. The IPD adjustment still works normally. This principle is to adjust the IPD separately.

[0123] If you want to adjust IPD / ER at the same time, similarly, push the toggle member 73 backward to make the second gear 722 of the gear member 72 mesh with the driving gear 51, and the first gear 721 of the gear member 72 mesh with the transmission gear 62 again.

[0124] If you want to adjust ER separately, similarly, push the toggle member 73 backward twice, the front end of the first gear 721 engages with the transmission gear 62, and the rear end engages with the worm 42, but does not touch the second gear 722. The second gear 722 retreats to separate from the driving gear 51. At this time, the IPD adjustment is disconnected. Turn the handwheel 41, and the worm 42 only drives the first gear 721 to rotate, and the first gear 721 drives the transmission gear 62 to rotate, thereby realizing the function of adjusting ER separately.

[0125] As can be understood, the connecting shaft 61 is fixed to the bracket 1 and is provided with a rotatable connector 64, which is secured to the transmission gear 62 via two screws. The transmission gear 62 and the screw 63 can be considered as a single unit. The rotation of the first gear 721 drives the transmission gear 62, which in turn drives the screw 63. The front headband 3 is provided with a matching guide post 32, which in turn drives the front headband 3 to move forward and backward.

[0126] It should be noted that the adjustment component 7 has three gears. Pushing it to the front end is gear 1, that is, the first gear 721 and the transmission gear 62 are separated, and the third gear 723 is engaged with the worm 42, so only the IPD can be adjusted. Backing it off is gear 2, and the IPD and ER are adjusted at the same time. Backing it off again is gear 3, and the first gear 721 is engaged with the transmission gear 62 and the worm 42 at the same time, and the second gear 722 / the third gear 723 is separated from the worm 42, so only the ER can be adjusted.

[0127] The head-mounted display device 100 of the present invention replaces the traditional center adjustment wheel with a side-mounted handwheel for more convenient adjustment. When adjusting the IPD, the IPD can rebound after maximum or minimum adjustment due to stress from the eyecup and FPC on the lens barrel 2. However, the self-locking principle of the worm gear prevents rebound after adjustment. By adjusting the meshing and disengagement of the gears, the IPD and ER can be freely switched, allowing for independent or simultaneous adjustment.

[0128] The head mounted display device 100 of the present invention further includes components such as circuits or control components. In this embodiment, the head mounted display device 100 may be a VR device, which is not limited here.

[0129] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A head-mounted display device, characterized in that: The head-mounted display device includes: Bracket; Two lens barrels, the two lens barrels are spaced apart along a first direction and movably connected to the bracket; A headband, located on the same side of the two lens barrels and movably connected to the bracket; and An adjustment structure comprising a drive assembly, a first transmission assembly, a second transmission assembly, and an adjustment assembly, wherein the first transmission assembly is connected to the bracket and is respectively in transmission connection with the two lens barrels, the second transmission assembly is connected to the bracket and is in transmission connection with the headband, the adjustment assembly is movably connected to the bracket and is in transmission connection with the first transmission assembly and / or the second transmission assembly, and the drive assembly is provided on the bracket and is in transmission connection with the adjustment assembly; The head-mounted display device has a first state in which the adjustment component is transmission-connected to the first transmission component, a second state in which the adjustment component is transmission-connected to the second transmission component, and a third state in which the adjustment component is transmission-connected to the first transmission component and the second transmission component; In the first state, the driving assembly drives the adjusting assembly to drive the first transmission assembly to rotate, so that the two lens barrels move closer to or farther from each other along the first direction; In the second state, the driving component drives the adjusting component to drive the second transmission component to rotate, so as to move the headband closer to or away from the bracket; In the third state, the driving component drives the adjusting component and simultaneously drives the first transmission component and the second transmission component to rotate, so that the two lens barrels move closer to or farther away from each other along the first direction, and the headband moves closer to or farther away from the bracket.

2. The head-mounted display device according to claim 1, wherein: The first transmission assembly includes: A driving gear, the driving gear is rotatably connected to the bracket and is in transmission connection with the adjustment assembly, the lens barrel is provided with a first rack, the driving gear is meshed with the first rack; and A driven gear, the driven gear being rotatably connected to the bracket and meshing with the driving gear, the other lens barrel being provided with a second rack, the driven gear being meshing with the second rack; In the first state and the third state, the driving assembly drives the adjusting assembly to rotate the driving gear and the driven gear, so that the driving gear and the driven gear drive the first rack and the second rack to drive the two lens barrels to move closer to or away from each other along the first direction.

3. The head-mounted display device according to claim 2, wherein: A direction in which the headband approaches or moves away from the bracket is defined as a second direction, the first rack and the second rack are both extended along the first direction, and the first rack and the second rack are staggered along the second direction; And / or, the width of the driving gear along its axial direction is greater than the width of the first rack, and the width of the driven gear along its axial direction is greater than the width of the second rack.

4. The head-mounted display device according to claim 2, wherein: The second transmission assembly includes: a connecting shaft, one end of which is connected to the bracket; a transmission gear, the transmission gear being rotatably connected to an end of the connecting shaft away from the bracket; and A screw, one end of which is connected to the transmission gear, the other end of which is provided with a thread, the head having a threaded hole, the screw passing through the threaded hole and being threadedly connected to the head; In which, the direction in which the headband approaches or moves away from the bracket is defined as the second direction, and the screw is defined as extending along the second direction. In the second state and the third state, the driving component drives the adjusting component to drive the transmission gear to rotate, and drives the screw to rotate, so that the headband approaches or moves away from the bracket along the second direction.

5. The head mounted display device according to claim 4, wherein: The connecting shaft and the screw are coaxially arranged; And / or, the driving gear is movably sleeved on the connecting shaft and is located between the transmission gear and the bracket, so that the driving gear and the transmission gear are coaxially arranged; And / or, the connecting shaft is provided with a rotation groove at one end adjacent to the transmission gear, the second transmission assembly further comprises a connecting head, the connecting head is rotatably sleeved on the connecting shaft and accommodated in the rotation groove, and the transmission gear is provided with two connecting columns on a side facing the connecting shaft, and the two connecting columns are connected to the connecting head via fasteners; And / or, the transmission gear and the screw are an integrally formed structure.

6. The head mounted display device according to claim 1, wherein: The bracket is provided with a sliding hole, and the adjustment component includes: a movable shaft, one end of which is slidably inserted into the sliding hole and extends along the second direction; a gear member, said gear member being sleeved on said movable shaft and being in transmission connection with said driving assembly; and a toggle member, one end of which is connected to the movable shaft, and the other end of which is provided with a toggle portion; The toggle portion is pushed so that the toggle member drives the movable shaft to move along the second direction, so that the gear member is meshed and connected with the first transmission assembly and / or the second transmission assembly.

7. The head mounted display device according to claim 6, wherein: The gear member comprises: a first gear, the first gear being sleeved on the movable shaft; and a second gear, the second gear being sleeved on the movable shaft and spaced apart from the first gear, and being located between the first gear and the bracket; Wherein, in the first state, the second gear is meshed and connected with the first transmission assembly, and is in transmission connection with the drive assembly; In the second state, the first gear is meshed with the second transmission assembly and is in transmission connection with the drive assembly; In the third state, the second gear is meshed and connected with the first transmission assembly, and the first gear is meshed and connected with the second transmission assembly, and the second gear or the first gear is transmission-connected with the drive assembly.

8. The head mounted display device according to claim 6, wherein: The gear member comprises: a first gear, the first gear being sleeved on the movable shaft; a second gear, the second gear being sleeved on the movable shaft and located between the first gear and the bracket; and a third gear, the third gear being sleeved on the movable shaft and located between the second gear and the bracket; Wherein, in the first state, the third gear is meshed and connected with the first transmission assembly, and is in transmission connection with the drive assembly; In the second state, the first gear is meshed with the second transmission assembly and is in transmission connection with the drive assembly; In the third state, the second gear is meshed and connected with the first transmission assembly and is in transmission connection with the drive assembly, and the first gear is meshed and connected with the second transmission assembly.

9. The head mounted display device according to claim 8, wherein: The third gear is rotatably sleeved on the movable shaft; And / or, the width of the first gear along its axial direction is greater than the vertical distance between the drive assembly and the second transmission assembly, and smaller than the vertical distance between the first transmission assembly and the second transmission assembly; And / or, the second direction is perpendicular to the bracket and is arranged perpendicular to the first direction.

10. The head mounted display device according to any one of claims 1 to 9, characterized in that: The bracket is provided with a mounting platform, the driving assembly includes a handwheel and a worm, the worm extends along the first direction, the handwheel is connected to one end of the worm, the other end of the worm rotates through the mounting platform and is provided with helical teeth, and the helical teeth are meshed with the adjustment assembly; And / or, the bracket is provided with a guide shaft, the guide shaft is extended along the first direction, each of the lens barrels is provided with a guide hole, and the guide shaft is slidably inserted into the guide hole; And / or, the bracket is provided with a guide column, the guide column extends toward the headband and is arranged perpendicular to the bracket, the headband is provided with a guide column corresponding to the guide column, the guide column is provided with a sliding hole, and the guide column slides through the sliding hole.

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