CN112987312A

CN112987312A - Interpupillary distance adjusting structure and electronic equipment

Info

Publication number: CN112987312A
Application number: CN202110244981.4A
Authority: CN
Inventors: 吴涛
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-06-18
Anticipated expiration: 2041-03-05
Also published as: CN112987312B

Abstract

The invention discloses a pupil distance adjusting structure and electronic equipment, wherein the adjusting structure comprises a first guide piece; two first mounting members slidably connected to the first guide members; the two first mounting parts are provided with second guide pieces; a second mount; the adjusting assembly comprises a driving gear, two driven gears which are meshed with each other and a sliding piece arranged on the end faces of the driven gears; the circle centers of the sliding piece and the driven gear are not concentric; the two driven gears are rotationally arranged on the second mounting piece, and the sliding pieces on the two driven gears are respectively arranged on the second guide piece in a sliding mode; the driving gear is arranged on the second mounting part and is meshed with one driven gear. Above-mentioned interpupillary distance adjusts structure, the distance between two adjustable installed parts can adapt to the operation requirement of different interpupillary distances.

Description

Interpupillary distance adjusting structure and electronic equipment

Technical Field

The invention relates to the technical field of electronic equipment, in particular to a pupil distance adjusting structure and electronic equipment.

Background

The interpupillary distance, commonly referred to as IPD, can be described as the physical distance between the eyes. The average IPD for male and female users is between 58mm and 72 mm. Setting the correct IPD is important to maximize the image quality of VR and AR head displays. Most head mounted display devices have lenses and displays that achieve maximum clarity and field of view when viewed through the "optical center" (also referred to as the "sweet spot") of the lens. Maximum clarity and field of view will not be obtained if the user's eye center is not aligned with the optical center of the lens. To this end, many head mounted display devices have physical IPD adjustment structures that can alter the distance between the lenses to align the eye with the optical center of the lenses.

Disclosure of Invention

Based on this, the technical problem to be solved by the present invention is to provide a pupil distance adjusting structure and an electronic device capable of adjusting the distance between two lens assemblies.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

a interpupillary distance adjustment structure, comprising:

a first guide member;

two first mounting members slidably coupled to the first guide members; the two first mounting pieces are respectively provided with a second guide piece, and the second guide pieces and the first guide pieces form included angles;

a second mount;

the adjusting assembly comprises a driving gear, two driven gears which are meshed with each other and sliding pieces which are respectively arranged on the end faces of the driven gears; the circle centers of the sliding piece and the driven gear are not concentric; two driven gears are rotatably arranged on the second mounting piece, and sliding pieces on the two driven gears are respectively arranged on the second guide piece in a sliding manner; the driving gear is arranged on the second mounting part and meshed with one driven gear.

Further, the adjusting component also comprises a one-way bearing, and the one-way bearing is fixed on the second mounting part.

Further, the adjusting assembly further comprises an elastic member, and the two first mounting members are connected through the elastic member.

Further, the elastic part is a tension spring or a compression spring.

Further, the adjusting assembly further comprises a driving piece, and the driving piece is used for driving the driving gear to rotate.

Further, the driving piece comprises an adjusting hand wheel and a connecting gear, the adjusting hand wheel rotates and is arranged on the second mounting piece, the connecting gear is fixedly connected with the adjusting hand wheel in a coaxial mode, and the connecting gear is meshed with the driving gear.

Further, the driving part comprises a motor, and a rotating shaft of the motor is connected with the driving gear.

Further, the sliding part is a cam, and the cam is rotatably arranged on the end face of the driven gear.

The invention also comprises an electronic device which comprises a shell, two lens components and the interpupillary distance adjusting structure, wherein the first guide piece and the second installation piece are fixed in the shell, and the two lens components are respectively fixed on the two first installation pieces.

Further, the lens subassembly includes the display screen and sets up the camera lens in the display screen front, the display screen is fixed in on the installed part.

Compared with the prior art, the invention has the advantages and positive effects that:

above-mentioned interpupillary distance adjusts structure, through adjusting the adjusting part, the distance between two adjustable installed parts makes the accommodation process more become more meticulous, can adapt to the operation requirement of the different interpupillary distances of different users.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the pupil distance adjusting structure according to the present invention;

FIG. 2 is a schematic diagram of the adjustment of the interpupillary distance adjustment structure of the present invention;

FIG. 3 is a schematic diagram of the interpupillary distance adjustment structure of the present invention adjusted to the maximum interpupillary distance;

FIG. 4 is a schematic diagram of the interpupillary distance adjustment structure of the present invention adjusted to a minimum interpupillary distance;

FIG. 5 is a schematic diagram of the positions of the slider and the driven gear in the interpupillary distance adjustment structure of the present invention;

FIG. 6 is a schematic diagram of pupil distance adjustment when the elastic element is a tension spring in the pupil distance adjustment structure according to the present invention;

description of reference numerals:

a lens assembly 100; a display screen 110; a lens 120;

a first mount member 110;

a second mount 210;

a slide rail bracket 220; a slide rail groove 221;

a drive gear 231; driven gears 232a/232 b; a slide member 233; an elastic member 234; a one-way bearing 235; an adjusting handwheel 236; a connecting gear;

and a guide shaft 240.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 4, there is shown an embodiment of the interpupillary distance adjusting structure of the present invention. The interpupillary distance adjustment structure includes a first guide 240, two first mounting elements 110, a second mounting element 210, and an adjustment assembly. The two first mounting members 110 are slidably connected to the first guide member and are slidable along the first guide member. The first mounting member 110 is used to mount a display screen. In this embodiment, the first guide is the guide shaft 240.

The two first mounting members 110 are provided with second guide members. The first mounting member 110 may be fixed with a slide rail bracket 220, the slide rail bracket may be provided with a slide rail or a slide groove as a second guide, or the first mounting member 110 may be directly provided with a slide groove as a second guide. In this embodiment, it is preferable that the slide rail bracket 220 is fixed to the first mounting member 110, and the slide rail bracket 220 is provided with a slide groove 221 as a second guide. Wherein the second guide member 220 and the first guide member 240 have an included angle, that is, the slide rail bracket 220 and the guide shaft 240 have an included angle therebetween, and preferably, the slide rail bracket 220 and the guide shaft 240 are perpendicular to each other. The guide shaft 240 may pass through the slide rail bracket 220, and the first mounting part 110 slides along the guide shaft 240 through the slide rail bracket 220.

The adjustment assembly includes a driving gear 231, two driven

gears

232a, 232b engaged with each other, and sliders 233 provided on end surfaces of the driven

gears

232a, 232b, respectively. The driven

gears

232a and 232b are rotatably disposed on the second mounting member 210, and the sliders 233 of the driven

gears

232a and 232b are respectively slidably disposed in the slider grooves 221 of the two slider brackets 220. A driving gear 231 is provided on the second mounting member 210 and is engaged with one of the driven gears 232. As shown in fig. 5, when the driving gear 231 drives the driven gear to rotate circumferentially, because the sliding part 233 and the driven gear are not concentric (i.e. the center O of the driven gear is not concentric with the center of the sliding part 233), the sliding part 233 moves in the horizontal direction when the driven gear rotates, and then applies a force to the sliding rail bracket 220, so that the circular motion of the sliding part 233 is converted into the linear motion of the sliding rail bracket 220, and the first mounting part 110 is driven to move, and then the distance between the two display screens can be adjusted, so as to adapt to different interpupillary distances of different users.

Foretell interpupillary distance adjusts structure through adjusting part, and the distance between two adjustable first installed parts (display screen) makes the accommodation process more become more meticulous, can adapt to the operation requirement of the different interpupillary distances of different users.

Further, the adjustment assembly also includes a one-way bearing 235. The one-way bearing 235 is fixed on the second mounting part 210, and the inner ring of the one-way bearing 235 is in one-way movable fit with the wheel axle of the driving gear 231; the driving gear is connected with the one-way bearing, so that the driving gear can only rotate towards one direction

Further, the adjustment assembly further includes an elastic member, and the two first mounting members 110 are connected by the elastic member 234. The elastic member 234 may be a tension spring or a compression spring. When the elastic member 234 is a tension spring, the tension spring is elongated in the process of adjusting the interpupillary distance; when the elastic member 234 is a compression spring, the compression spring is compressed in the process of adjusting the interpupillary distance to be small. The present embodiment is described with the elastic member 234 as a tension spring. Referring to fig. 6, in the illustrated position, when the two first mounting members 110 are located at the maximum interpupillary distance position, and the driven gear 232a rotates clockwise, the two first mounting members 110 move from the minimum interpupillary distance position to the maximum interpupillary distance position, the elastic member 234 is elongated, and the two first mounting members 110 tend to approach each other under the elastic force, but the restoration of the two first mounting members 110 is restricted due to the one-way bearing. When the two first mounting members 110 start to move from the maximum interpupillary distance position to the minimum interpupillary distance position by continuing to rotate the driven gear 232a clockwise, the elastic member 234 can rapidly restore the two first mounting members 110 to the minimum interpupillary distance position.

Further, the adjusting assembly further comprises a driving member for driving the driving gear 231 to rotate. Specifically, the driving member includes an adjusting handwheel 236 and a connecting gear (not shown), the adjusting handwheel 236 is rotatably disposed on the second mounting member 210, the connecting gear is coaxially and fixedly connected with the adjusting handwheel 236, and the connecting gear is engaged with the driving gear 231. . In other embodiments, the driving member may also be an electric driving member, such as a motor, etc., and the rotation of the driving gear 231 may be automatically controlled by the motor and the device control system, so as to adjust the interpupillary distance. Alternatively, the drive gear 231 may be directly rotated by hand. In other embodiments, the adjustment handwheel 236 may be disposed near the left and right sides of the lens assembly 100.

Further, the slider 233 is a cam rotatably provided on an end surface of the driven gear (not coaxial with the driven gear 232). In the rotating process of the two driven gears, the cams roll in the sliding rail grooves 221, so that the friction force between the cams and the sliding rail grooves 221 is reduced, and the smoothness of adjustment is improved. In other embodiments, the slider 233 may be a projection fixed to the end surface of the driven gear.

The working principle of the pupil distance adjusting structure is as follows:

as shown in fig. 2, the adjusting handwheel 236 is rotated clockwise to drive the driven gear 232a to rotate clockwise through the driving connecting gear and the one-way bearing, and the driven gear 232a simultaneously drives the other driven gear 232b to rotate counterclockwise; when the two driven gears rotate, the sliding parts 233 (cams) on the two driven gears rotate together, the cams slide in the sliding rail grooves 221 on the sliding rail bracket 220, the circular motion of the sliding parts 233 is converted into the linear motion of the sliding rail bracket 220, and then the distance between the two first mounting parts 110 can be adjusted. As shown in fig. 3, when the two sliders 233 are rotated to the farthest distance apart, the interval between the two lens assemblies 100 is adjusted to the maximum; as shown in fig. 4, when the two sliders 233 are rotated to the nearest distance, the interval between the two first mounting members 110 is adjusted to be minimum.

When the two first mounting members 110 move away from each other in the horizontal direction, the tension spring is pulled, and the elastic force of the tension spring pulls the two lens assemblies 100 toward the middle, but due to the function of the one-way bearing 235, the two lens assemblies 100 are locked at this position, and if the user misses the optimal position during adjustment, a circle of the adjusting handwheel 236 needs to be rotated again.

The present invention also includes electronic devices including, but not limited to, head mounted display devices, fixed display devices, eyewear-equipped devices, and the like. Head mounted display devices include, but are not limited to, VR glasses, AR glasses, and the like. The electronic device comprises a shell and two lens assemblies 100, wherein the two lens assemblies 100 are connected with the shell through a pupil distance adjusting structure. In the present embodiment, the lens assembly 100 includes a display screen fixed to the first mount 110 and a lens disposed in front of the display screen. The guide shaft 240 and the second mounting member 210 are fixed within the housing. . When the drive member includes an adjustment handwheel 236, the adjustment handwheel 236 preferably extends out of the housing of the electronic device to facilitate a user in dialing the adjustment handwheel for adjustment.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A interpupillary distance adjustment structure, comprising:

a first guide member;

a second mount;

2. The interpupillary distance adjustment structure of claim 1, wherein said adjustment assembly further comprises a one-way bearing, said one-way bearing being fixed to said second mounting member.

3. The interpupillary distance adjustment structure of claim 2, wherein said adjustment assembly further comprises an elastic member, and wherein the two first mounting members are connected by said elastic member.

4. The interpupillary distance adjusting structure of claim 3, wherein said elastic member is a tension spring or a compression spring.

5. The interpupillary distance adjustment structure of claim 1, wherein said adjustment assembly further comprises a drive member for driving rotation of said drive gear.

6. The interpupillary distance adjusting structure of claim 5, wherein the driving member comprises an adjusting handwheel and a connecting gear, the adjusting handwheel is rotatably disposed on the second mounting member, the connecting gear is coaxially and fixedly connected with the adjusting handwheel, and the connecting gear is engaged with the driving gear.

7. The interpupillary distance adjustment structure of claim 5, wherein said driving member comprises a motor, and a rotation shaft of said motor is connected to a driving gear.

8. The interpupillary distance adjustment structure of claim 1, wherein said slider is a cam rotatably disposed on an end surface of said driven gear.

9. An electronic device comprising a housing and two lens assemblies, further comprising the interpupillary distance adjustment structure of any of claims 1-8, wherein the first guide and the second mount are fixed in the housing, and wherein the two lens assemblies are fixed to the two first mounts, respectively.

10. The electronic device of claim 9, wherein the lens assembly comprises a display screen and a lens disposed in front of the display screen, the display screen being secured to the mounting member.