Pupil distance adjusting mechanism and head-mounted display equipment

Abstract

The utility model belongs to the technical field of virtual reality, and discloses an interpupillary distance adjusting mechanism and a head-mounted display device. The mechanism comprises a support, a guide assembly, a driving assembly, a first lens cone assembly and a second lens cone assembly. The guiding assembly is arranged on the support, the driving assembly comprises a driving piece and a first transmission wheel, the driving piece is in sliding fit with the guiding assembly, and a driving rack is arranged on the driving piece. The first transmission wheel comprises a first gear and a second gear which are coaxially connected, and the first gear is meshed with the driving rack. The first lens cone assembly and the second lens cone assembly are in sliding fit with the guide assembly, the first lens cone assembly is provided with a first transmission rack, the second lens cone assembly is provided with a second transmission rack, and the first transmission rack and the second transmission rack are arranged on the two sides of the second gear in the radial direction respectively and meshed with the second gear. According to the utility model, the driving member drives the first lens cone assembly and the second lens cone assembly at the same time, so that the moving synchronization degree of the first lens cone assembly and the second lens cone assembly is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of virtual reality technology, and in particular to an interpupillary distance adjustment mechanism and a head-mounted display device. Background Technology

[0002] VR (Virtual Reality) technology uses computer technology to simulate a three-dimensional virtual environment on a display screen, immersing the user in that environment. VR headsets use head-mounted display devices to shut out a person's vision and hearing from the outside world, guiding the user to feel as if they are in a virtual environment. The display principle is that the left and right screens display images for the left and right eyes respectively. After the human eye receives this information with differences, it creates a sense of three-dimensionality in the brain.

[0003] However, people of different ages, regions, or countries usually have different interpupillary distances. In order to meet the wearing experience of different groups of people, head-mounted display devices need to have an interpupillary distance adjustment function.

[0004] However, existing interpupillary distance adjustment mechanisms usually use one lens barrel as the driving component for the other lens barrel to adjust them synchronously. This makes it difficult to avoid transmission lag during adjustment, often causing jamming, which is very laborious and results in a poor wearing experience for the user.

[0005] Therefore, there is an urgent need for an interpupillary distance adjustment mechanism and a head-mounted display device to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an interpupillary distance adjustment mechanism and a head-mounted display device to solve the technical problem in the prior art where one lens barrel acts as a driving component for the other lens barrel to achieve synchronous adjustment, making it difficult to avoid transmission lag and frequent jamming during adjustment. The present invention aims to improve the synchronization of the movement of the first lens barrel assembly and the second lens barrel assembly, thereby improving the user's wearing experience.

[0007] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0008] Firstly, a pupil distance adjustment mechanism is provided, comprising:

[0009] support;

[0010] A guide assembly is mounted on the bracket;

[0011] A drive assembly includes a drive member and a first transmission wheel; the drive member slides in a predetermined direction with the guide assembly, and a drive rack is provided on the drive member; the first transmission wheel is rotatably mounted on the bracket, and the first transmission wheel includes a first gear and a second gear coaxially connected, the first gear meshing with the drive rack;

[0012] The first lens barrel assembly and the second lens barrel assembly are both slidably engaged with the guide assembly along the preset direction. The first lens barrel assembly is provided with a first transmission rack, and the second lens barrel assembly is provided with a second transmission rack. The first transmission rack and the second transmission rack are respectively located on both sides of the second gear along the radial direction, and both mesh with the second gear.

[0013] Optionally, the diameter of the drive tooth is larger than the diameter of the first transmission tooth.

[0014] Optionally, both the first and second transmission racks include a connecting portion and a rack portion;

[0015] The end of the rack portion is connected to the first lens barrel assembly or the second lens barrel assembly via the connecting portion, and the maximum dimension of the connecting portion along the first direction is greater than the maximum dimension of the end of the rack portion along the first direction;

[0016] Wherein, the first direction is the width direction of the rack portion.

[0017] Optionally, the interpupillary distance adjustment mechanism further includes a second transmission wheel, which is rotatably mounted on the bracket and spaced apart from the first transmission wheel;

[0018] The first lens barrel assembly is provided with a third transmission rack, and the second lens barrel assembly is provided with a fourth transmission rack;

[0019] The third and fourth transmission racks are respectively located on both sides of the second transmission wheel along the radial direction, and both mesh with the second transmission wheel.

[0020] Optionally, the second transmission wheel includes a disc portion and a third gear arranged coaxially;

[0021] The third gear protrudes from the disk portion and meshes with both the third transmission rack and the fourth transmission rack.

[0022] Optionally, the guiding assembly includes a first guide rail and a second guide rail that are spaced apart;

[0023] The driving component is slidably connected to the first guide rail, and both the first lens barrel assembly and the second lens barrel assembly are slidably connected to the first guide rail and the second guide rail.

[0024] The distribution direction of the first guide rail and the second guide rail is perpendicular to the preset direction.

[0025] Optionally, at least one of the first lens barrel assembly and the second lens barrel assembly is provided with a clearance notch for avoiding the other.

[0026] Optionally, the driving member includes a pushing operation part, a first sliding part, and a second sliding part, wherein the pushing operation part is connected to the driving rack through the first sliding part and the second sliding part;

[0027] The first sliding part is slidably connected to the guide assembly;

[0028] The bracket has a limiting groove, and the second sliding part is slidably restricted within the limiting groove along the preset direction.

[0029] Optionally, one of the first lens barrel assembly and the second lens barrel assembly is provided with a protrusion, and the bracket is provided with a limiting notch, wherein the protrusion is slidably constrained within the limiting notch.

[0030] On the other hand, a head-mounted display device is provided, including a housing and the aforementioned interpupillary distance adjustment mechanism; the interpupillary distance adjustment mechanism is disposed within the housing.

[0031] The beneficial effects of this utility model are:

[0032] The interpupillary distance adjustment mechanism proposed in this utility model has a driving component that slides in a predetermined direction with a guide component. A first gear and a second gear, coaxially connected, are rotatably mounted on a bracket. The first gear meshes with a drive rack on the driving component. A first lens barrel assembly and a second lens barrel assembly slide in a predetermined direction with the guide component. Both the first lens barrel assembly and the second lens barrel assembly mesh with the second gear. This allows the driving component to drive the first gear to rotate via the drive rack, which in turn drives the coaxially connected second gear to rotate synchronously. Consequently, the first lens barrel assembly and the second lens barrel assembly, which mesh with the second gear, simultaneously perform opposite linear movements. This enables the driving component to simultaneously drive the first lens barrel assembly and the second lens barrel assembly to adjust the interpupillary distance, effectively improving the synchronization of the movement of the first lens barrel assembly and the second lens barrel assembly.

[0033] The head-mounted display device proposed in this invention can simultaneously drive the first lens barrel assembly and the second lens barrel assembly through a driving component when adjusting the interpupillary distance, effectively providing synchronization of the movement of the first lens barrel assembly and the second lens barrel assembly. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0035] Figure 1This is a schematic diagram of the interpupillary distance adjustment mechanism provided by this utility model from a first-view perspective;

[0036] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 This is a schematic diagram of the structure of the driving component provided by this utility model;

[0038] Figure 4 This is a schematic diagram of the structure of the first transmission wheel provided by this utility model;

[0039] Figure 5 This is a structural schematic diagram of the first lens barrel assembly provided by this utility model;

[0040] Figure 6 This is a schematic diagram of the structure of the second lens barrel assembly provided by this utility model;

[0041] Figure 7 This is a schematic diagram of the structure of the second transmission wheel provided by this utility model;

[0042] Figure 8 This is a schematic diagram of the second perspective of the interpupillary distance adjustment mechanism provided by this utility model;

[0043] Figure 9 This is a structural schematic diagram of the interpupillary distance adjustment mechanism provided by this utility model from a third-view perspective.

[0044] In the picture:

[0045] 1. Bracket; 11. Limiting groove; 12. Limiting notch;

[0046] 2. Guide assembly; 21. First guide rail; 22. Second guide rail;

[0047] 3. Drive assembly; 31. Drive component; 311. Pushing operation part; 312. First sliding part; 3121. Guide hole; 313. Second sliding part; 3131. Drive rack;

[0048] 32. First transmission wheel; 321. First gear; 322. Second gear;

[0049] 41. First lens barrel assembly; 411. First transmission rack; 4111. Connecting part; 4112. Rack part; 412. Third transmission rack; 42. Second lens barrel assembly; 421. Second transmission rack; 422. Fourth transmission rack; 43. Clearance notch; 44. Protrusion;

[0050] 5. Second transmission wheel; 51. Disc section; 52. Third gear. Detailed Implementation

[0051] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0052] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] This utility model discloses an interpupillary distance adjustment mechanism, such as Figures 1 to 6 As shown, the interpupillary distance adjustment mechanism includes a bracket 1, a guide assembly 2, a drive assembly 3, a first lens barrel assembly 41, and a second lens barrel assembly 42. The guide assembly 2 is mounted on the bracket 1. The drive assembly 3 includes a drive member 31 and a first transmission wheel 32. The drive member 31 slides in a predetermined direction with the guide assembly 2, and a drive rack 3131 is provided on the drive member 31. The first transmission wheel 32 is rotatably mounted on the bracket 1 and includes a first gear 321 and a second gear 322 coaxially connected, with the first gear 321 meshing with the drive rack 3131. Both the first lens barrel assembly 41 and the second lens barrel assembly 42 slide in a predetermined direction with the guide assembly 2. The first lens barrel assembly 41 is provided with a first transmission rack 411, and the second lens barrel assembly 42 is provided with a second transmission rack 421. The first transmission rack 411 and the second transmission rack 421 are respectively located on both sides of the second gear 322 along the radial direction and both mesh with the second gear 322.

[0055] In some specific embodiments, such as Figure 2 As shown, a fixed shaft protrudes from the side of the bracket 1 opposite to the user's face. The first transmission wheel 32 is coaxially sleeved on the fixed shaft and can rotate on the fixed shaft. The first transmission rack 411 and the second transmission rack 421 are both parallel to a preset direction. It can be understood that the preset direction is a direction parallel to the interpupillary distance. By adjusting the distance between the first lens barrel assembly 41 and the second lens barrel assembly 42, the interpupillary distance of people of different ages, regions, or countries can be matched.

[0056] In the interpupillary distance adjustment mechanism proposed in this utility model, the driving component 31 slides in cooperation with the guide component 2 along a preset direction. The first gear 321 and the second gear 322, which are coaxially connected, are rotatably mounted on the bracket 1. The first gear 321 meshes with the driving rack 3131 on the driving component 31. The first lens barrel assembly 41 and the second lens barrel assembly 42 slide in cooperation with the guide component 2 along a preset direction. Both the first lens barrel assembly 41 and the second lens barrel assembly 42 mesh with the second gear 322. This allows the driving component 31 to drive the first gear 321 to rotate through the driving rack 3131, and simultaneously drive the coaxially connected second gear 322 to rotate. Consequently, the first lens barrel assembly 41 and the second lens barrel assembly 42, which are meshed with the second gear 322, perform opposite linear movements simultaneously. This enables the driving component 31 to simultaneously drive the first lens barrel assembly 41 and the second lens barrel assembly 42 to adjust the interpupillary distance, effectively improving the synchronization of the movement of the first and second lens barrels, reducing the difference in transmission between the first and second lens barrel assemblies 41 and 42, and improving the user's experience.

[0057] Further, see Figure 4 The diameter of the first gear 321 is larger than the diameter of the second gear 322. Understandably, when the user needs to adjust the distance between the first lens barrel assembly 41 and the second lens barrel assembly 42, they push the drive member 31, which meshes with the first gear 321 via the drive rack 3131. This causes the larger-diameter first gear 321 to rotate, which in turn rotates the coaxially connected, smaller-diameter second gear 322. When the first gear 321 and the second gear 322 rotate by the same angle, the moving distance of the first and second transmission racks 411 and 421 meshing with the second gear 322 is smaller than the moving distance of the drive rack 3131 meshing with the first gear 321, thereby improving the adjustment precision of the first lens barrel assembly 41 and the second lens barrel assembly 42.

[0058] Furthermore, both the first transmission rack 411 and the second transmission rack 421 include a connecting portion 4111 and a rack portion 4112. The end of the rack portion 4112 is connected to the first lens barrel assembly 41 or the second lens barrel assembly 42 via the connecting portion 4111. The maximum dimension of the connecting portion 4111 along a first direction is greater than the maximum dimension of the end of the rack portion 4112 along the first direction, wherein the first direction is the width direction of the rack portion 4112.

[0059] Specifically, the first transmission rack 411 is disposed on the side of the first lens barrel assembly 41 near the second lens barrel assembly 42. The second transmission rack 421 is disposed on the side of the second lens barrel assembly 42 near the first lens barrel assembly 41 along the width direction of the rack portion 4112. In this embodiment, taking the first transmission rack 411 as an example, as follows... Figure 5 As shown, the size of the connecting part 4111 is larger than the size of the rack part 4112. This arrangement can reduce the space occupied by the first transmission rack 411 and the second transmission rack 421 while ensuring the structural strength of the first transmission rack 411 and the second transmission rack 421, thereby improving the space utilization rate of the interpupillary distance adjustment mechanism.

[0060] Furthermore, the interpupillary distance adjustment mechanism also includes a second transmission wheel 5, which is rotatably mounted on the bracket 1 and spaced apart from the first transmission wheel 32. The first lens barrel assembly 41 is provided with a third transmission rack 412, and the second lens barrel assembly 42 is provided with a fourth transmission rack 422. The third transmission rack 412 and the fourth transmission rack 422 are respectively located on both sides of the second transmission wheel 5 along the radial direction, and both mesh with the second transmission wheel 5.

[0061] Specifically, such as Figure 1 , Figure 5 and Figure 6 As shown, in some specific embodiments, the first transmission wheel 32 and the second transmission wheel 5 are spaced apart along a first direction, and are rotatably mounted on the bracket 1 via a fixed shaft, just like the first transmission wheel 32 and the second transmission wheel 5. The third transmission rack 412 and the first transmission rack 411 are arranged in parallel, and the transmission teeth of the third transmission rack 412 and the first transmission rack 411 are arranged opposite each other. The fourth transmission rack 422 and the second transmission rack 421 are arranged in parallel, and the transmission teeth of the fourth transmission rack 422 and the second transmission rack 421 are arranged back to back.

[0062] Furthermore, the second transmission wheel 5 includes a disc portion 51 and a third gear 52 coaxially arranged. The third gear 52 protrudes from the disc portion 51 and meshes with both the third transmission rack 412 and the fourth transmission rack 422.

[0063] Specifically, such as Figure 7As shown, the diameter of the disc portion 51 is slightly larger than the diameter of the third gear 52. That is, when the third transmission rack 412 and the fourth transmission rack 422 mesh with the third gear 52, the disc portion 51 can restrict the third transmission rack 412 and the fourth transmission rack 422 from moving in opposite directions along the axis of the fixed shaft. In other words, the disc portion 51 not only improves the structural strength of the third gear 52, but also further ensures the smoothness and accuracy of the synchronous adjustment of the first lens barrel assembly 41 and the second lens barrel assembly 42.

[0064] In some embodiments, the structures of the third transmission rack 412 and the fourth transmission rack 422 are similar to those of the first transmission rack 411 and the third transmission rack 412, thereby further improving the space utilization of the interpupillary distance adjustment mechanism while ensuring the structural strength of the third transmission rack 412 and the fourth transmission rack 422.

[0065] In some specific embodiments, the disk portion 51 and the third gear 52 are integrally formed.

[0066] In some specific embodiments, the first gear 321, the second gear 322, the third gear 52, the first transmission rack 411, the second transmission rack 421, the third transmission rack 412, and the fourth transmission rack 422 are all provided with arrows to facilitate installation and positioning. This arrangement ensures that the transmission racks and gears are engaged in the appropriate positions during installation, providing sufficient adjustment distance for the interpupillary distance adjustment mechanism whether increasing or decreasing the interpupillary distance.

[0067] Furthermore, the guide assembly 2 includes a first guide rail 21 and a second guide rail 22 spaced apart. The drive member 31 is slidably connected to the first guide rail 21, and both the first lens barrel assembly 41 and the second lens barrel assembly 42 are slidably connected to the first guide rail 21 and the second guide rail 22. The distribution direction of the first guide rail 21 and the second guide rail 22 is perpendicular to a preset direction.

[0068] Specifically, such as Figure 8 As shown, the first guide rail 21 and the second guide rail 22 are spaced apart on both sides of the first lens barrel assembly 41 and the second lens barrel assembly 42 along a direction perpendicular to the preset direction. They guide both sides of the first lens barrel assembly 41 and the second lens barrel assembly 42 respectively, which further improves the smoothness of the pupillary distance adjustment. At the same time, they can also reserve enough space for the first lens barrel assembly 41 and the second lens barrel assembly 42 to be close to each other, ensuring that the pupillary distance adjustment mechanism has a sufficient adjustment range.

[0069] Furthermore, at least one of the first lens barrel assembly 41 and the second lens barrel assembly 42 is provided with a clearance notch 43 for avoiding the other.

[0070] Specifically, such as Figure 1 and Figure 6As shown, in this embodiment, each of the second lens barrel assemblies 42 is provided with a clearance notch 43. The clearance notch 43 is adapted to the side wall shape of the first lens barrel assembly 41. When the interpupillary distance is the smallest, the clearance notch 43 on the second lens barrel assembly 42 is close to the first lens barrel assembly 41. This setting can maximize the adjustment distance between the first lens barrel assembly 41 and the second lens barrel assembly 42 and improve the adjustment range of interpupillary distance.

[0071] Furthermore, the driving component 31 includes a pushing operation part 311, a first sliding part 312, and a second sliding part 313. The pushing operation part 311 is connected to the driving rack 3131 through the first sliding part 312 and the second sliding part 313. The first sliding part 312 is slidably connected to the guide assembly 2. A limiting groove 11 is formed on the bracket 1, and the second sliding part 313 is slidably confined within the limiting groove 11 along a preset direction.

[0072] Specifically, such as Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, in this embodiment, the pushing operation part 311 is exposed on the outside of the bracket 1. The first sliding part 312 has a guide hole 3121. The driving member 31 is slidably sleeved on the first guide rail 21 through the guide hole 3121, and the movement stroke of the driving member 31 is limited by the limiting groove 11 on the bracket 1 and the second sliding part 313. The driving rack 3131 is disposed on the second sliding part 313. This arrangement can prevent the driving member 31 from moving too far when adjusting the interpupillary distance, which would cause the driving rack 3131 to disengage from the first gear 321. If the meshing between the first gear 321 and the driving rack 3131 fails, the interpupillary distance cannot be adjusted.

[0073] Furthermore, one of the first lens barrel assembly 41 and the second lens barrel assembly 42 is provided with a protrusion 44, and the bracket 1 is provided with a limiting notch 12, and the protrusion 44 is slidably constrained within the limiting notch 12.

[0074] Specifically, such as Figure 1 , Figure 2 , Figure 5 and Figure 8As shown, in this embodiment, a protrusion 44 is provided on the first transmission rack 411 in the first lens barrel assembly 41. This arrangement allows the protrusion 44 to slide within the limiting notch 12 when adjusting the distance between the first lens barrel assembly 41 and the second lens barrel assembly 42. This arrangement prevents damage to the first lens barrel assembly 41 and / or the second lens barrel assembly 42 from becoming too close when reducing interpupillary distance; and prevents disengagement of the first transmission rack 411 and the second transmission rack 421 from the second gear 322 when increasing interpupillary distance, thus preventing the inability to adjust the interpupillary distance.

[0075] This utility model also provides a head-mounted display device, including a housing and the aforementioned interpupillary distance adjustment mechanism; the interpupillary distance adjustment mechanism is disposed inside the housing. When adjusting the interpupillary distance, the first lens barrel assembly 41 and the second lens barrel assembly 42 can be driven simultaneously by the drive member 31, effectively providing synchronization of the movement of the first lens barrel assembly 41 and the second lens barrel assembly 42.

[0076] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An interpupillary distance adjustment mechanism, characterized in that, include: Frame (1); A guide assembly (2) is disposed on the bracket (1); The drive assembly (3) includes a drive member (31) and a first transmission wheel (32); the drive member (31) is slidably engaged with the guide assembly (2) along a preset direction, and a drive rack (3131) is provided on the drive member (31); the first transmission wheel (32) is rotatably disposed on the bracket (1), and the first transmission wheel (32) includes a first gear (321) and a second gear (322) coaxially connected, and the first gear (321) meshes with the drive rack (3131); The first lens barrel assembly (41) and the second lens barrel assembly (42) are both slidably engaged with the guide assembly (2) along the preset direction. The first lens barrel assembly (41) is provided with a first transmission rack (411), and the second lens barrel assembly (42) is provided with a second transmission rack (421). The first transmission rack (411) and the second transmission rack (421) are respectively located on both sides of the second gear (322) along the radial direction, and both mesh with the second gear (322).

2. The interpupillary distance adjustment mechanism according to claim 1, characterized in that, The diameter of the first gear (321) is larger than the diameter of the second gear (322).

3. The interpupillary distance adjustment mechanism according to claim 1, characterized in that, The first transmission rack (411) and the second transmission rack (421) both include a connecting part (4111) and a rack part (4112); The end of the rack portion (4112) is connected to the first lens barrel assembly (41) or the second lens barrel assembly (42) via the connecting portion (4111), and the maximum dimension of the connecting portion (4111) along the first direction is greater than the maximum dimension of the end of the rack portion (4112) along the first direction. Wherein, the first direction is the width direction of the rack portion (4112).

4. The interpupillary distance adjustment mechanism according to claim 1, characterized in that, The interpupillary distance adjustment mechanism further includes a second transmission wheel (5), which is rotatably mounted on the bracket (1) and spaced apart from the first transmission wheel (32); The first lens barrel assembly (41) is provided with a third transmission rack (412), and the second lens barrel assembly (42) is provided with a fourth transmission rack (422); The third transmission rack (412) and the fourth transmission rack (422) are respectively disposed on both sides of the second transmission wheel (5) along the radial direction, and both mesh with the second transmission wheel (5).

5. The interpupillary distance adjustment mechanism according to claim 4, characterized in that, The second transmission wheel (5) includes a disc portion (51) and a third gear (52) arranged coaxially; The third gear (52) protrudes from the disk portion (51), and the third gear (52) meshes with both the third transmission rack (412) and the fourth transmission rack (422).

6. The interpupillary distance adjustment mechanism according to claim 1, characterized in that, The guide assembly (2) includes a first guide rail (21) and a second guide rail (22) spaced apart; The driving component (31) is slidably connected to the first guide rail (21), and the first lens barrel assembly (41) and the second lens barrel assembly (42) are both slidably connected to the first guide rail (21) and the second guide rail (22); The distribution direction of the first guide rail (21) and the second guide rail (22) is perpendicular to the preset direction.

7. The interpupillary distance adjustment mechanism according to any one of claims 1-6, characterized in that, At least one of the first lens barrel assembly (41) and the second lens barrel assembly (42) is provided with a clearance notch (43) for avoiding the other.

8. The interpupillary distance adjustment mechanism according to any one of claims 1-6, characterized in that, The driving component (31) includes a pushing operation part (311), a first sliding part (312) and a second sliding part (313), wherein the pushing operation part (311) is connected to the driving rack (3131) through the first sliding part (312) and the second sliding part (313); The first sliding part (312) is slidably connected to the guide assembly (2); The bracket (1) has a limiting groove (11) and the second sliding part (313) is slidably restricted within the limiting groove (11) along the preset direction.

9. The interpupillary distance adjustment mechanism according to any one of claims 1-6, characterized in that, One of the first lens barrel assembly (41) and the second lens barrel assembly (42) is provided with a protrusion (44), and the bracket (1) is provided with a limiting notch (12), and the protrusion (44) is slidably constrained within the limiting notch (12).

10. A head-mounted display device, characterized in that, It includes a housing and an interpupillary distance adjustment mechanism as described in any one of claims 1-9; the interpupillary distance adjustment mechanism is disposed within the housing.

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