Positioning structure for VR glasses focusing and VR glasses thereof

Abstract

The utility model discloses a VR glasses focusing positioning structure and VR glasses thereof, comprising a lens cone and a fixing ring, a plurality of vertically arranged through grooves are annularly arranged in the height direction of the lens cone, a plurality of anti-rotation ribs are annularly arranged on the outer side of the fixing ring, the fixing ring is installed in the lens cone, and the anti-rotation ribs extend into the through grooves. The outer side of the fixing ring is provided with a rubber ring, and the rubber ring is in interference connection with the fixing ring and the lens cone in a contact and abutting mode. According to the positioning structure for VR glasses focusing, the anti-rotation ribs are matched with the through grooves, the inclination of the fixing ring can be effectively avoided, the inclination degree of freedom of the fixing ring is greatly limited, the optical axis concentricity is ensured, meanwhile, the rubber ring is arranged, the rubber ring and the lens cone are in interference fit, and the interference magnitude enables the lens cone and the circumference of the fixing ring to generate equal-distance gaps, so that the focusing effect of the VR glasses is improved. And optical axis eccentricity caused by non-uniform gaps is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of optical imaging, and more specifically to a positioning structure for focusing of VR glasses and the VR glasses. Background Art

[0002] The existing VR glasses use an adjustment screw for diopter focusing. The adjustment screw is connected to a plastic fixing ring through a self-tapping thread. The fixing ring is connected to the lens 2 and slides on the oblique line of the spiral groove, which is converted into up and down movement of the lens 2, changing the distance between the lens 2 and the lens 1 to achieve focusing. The existing VR glasses structure must first assemble the lens 2 into the lens barrel and then assemble the screws from the side wall of the lens barrel. The screws are locked with a screw machine or pneumatic tools and locked on the (plastic or aluminum alloy) fixing ring. Due to the processing errors in the screw hole processing of the aluminum alloy fixing ring, the consistency difference is relatively large; the self-tapping screw thread of the plastic fixing ring is deformed during the locking process, causing the adjustment screw to be skewed, and the assembly of the two parts will inevitably lead to an increase in the cumulative tolerance, making it difficult to meet the requirement that the optical lens 2 has a tilt angle of about 0.2°.

[0003] The existing patent number is 202321461493.X, and the patent name is a utility model patent for VR glasses that can be focused without adjusting screws. It discloses a lens barrel, a first lens arranged at one end of the lens barrel, and a second lens slidably connected to the lens barrel, and the second lens is slidably connected to the lens barrel through a fixing ring; a display screen is arranged at the other end of the lens barrel, and a screen bracket is covered on the display screen and fixedly connected to the lens barrel; a convex rib is provided on the fixing ring, and the convex rib is integrally formed with the fixing ring, and a through hole is opened along the height direction of the lens barrel, and the convex rib is adapted to the through hole; a focusing ring is used to adjust the fixing ring to slide up and down. The VR glasses described in the utility model solve the problem of the influence of the skew of the adjustment screw structure on the optical performance by integrally forming a convex rib on the fixing ring and changing the structure of the lens barrel. However, the fixing ring and the lens barrel are connected by a clearance sliding fit. The assembly clearance fit of the fixing ring and the lens barrel will result in three unequal distances and inconsistent circumferences, and it cannot ensure that the optical axes of the first lens and the second lens are coaxial and concentric. In addition, the positioning structure of the convex rib (circular) and the through hole may cause the fixing ring to tilt to a certain extent, thereby causing the optical axis to be eccentric, affecting the optical performance. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a positioning structure for focusing of VR glasses. The positioning structure for focusing of VR glasses can effectively avoid the tilting of a fixing ring by arranging an anti-rotation convex ridge and cooperating with a through groove, greatly limiting the tilting freedom of the fixing ring and ensuring the concentricity of the optical axis. At the same time, a rubber ring is arranged to make an interference fit between the rubber ring and the lens barrel. The interference fit causes an equidistant gap to be generated around the lens barrel and the fixing ring, thereby avoiding eccentricity of the optical axis caused by uneven gaps.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A focusing positioning structure for VR glasses comprises a lens barrel and a fixing ring, wherein the lens barrel is provided with a plurality of vertically arranged through grooves in the height direction, the outer side of the fixing ring is provided with a plurality of anti-rotation ridges, the fixing ring is installed in the lens barrel, and the anti-rotation ridges extend into the through grooves, a rubber ring is installed on the outer side of the fixing ring, and the rubber ring is respectively in contact with the fixing ring and the lens barrel to form an interference connection.

[0007] Furthermore, the anti-rotation ridge includes a square column and a round column, one end of the square column is connected to the fixing ring, and the other end is connected to the round column, and the square column is located at the through slot, and the round column extends out of the through slot.

[0008] Furthermore, three through slots are provided on the lens barrel, and three anti-rotation ridges are provided on the outer side of the fixing ring.

[0009] Furthermore, a mounting groove is provided on the outer side of the fixing ring, and the rubber ring is sleeved in the mounting groove.

[0010] Furthermore, a plurality of guide grooves are provided at the end of the lens barrel, and the plurality of guide grooves are respectively connected to the plurality of through grooves, and the anti-rotation ridges extend into the through grooves through the guide grooves.

[0011] Furthermore, the fixing ring and the anti-rotation ridge are integrally formed.

[0012] A VR glasses, comprising a front cover, a focus ring, a first lens, a second lens, an LCD display screen and a back cover, wherein the front cover and the first lens are both mounted on the top of a lens barrel and the first lens is located between the front cover and the lens barrel, the focus ring is mounted on the outside of the lens barrel and is rotatably connected to the lens barrel, and a plurality of spiral grooves are provided on the inner ring of the focus ring, the anti-rotation ridges pass through the through grooves and extend into the spiral grooves, the second lens is mounted on a fixing ring, the LCD display screen and the back cover are both mounted on the bottom of the lens barrel, and the LCD display screen is located between the back cover and the lens barrel.

[0013] Furthermore, a plurality of O-rings are arranged between the lens barrel and the focusing ring.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, a through groove is provided on the lens barrel, and an anti-rotation ridge is provided on the fixing ring, so that the anti-rotation ridge cooperates with the through groove, so that when one of the anti-rotation ridges of the fixing ring is tilted, the other places will slide asynchronously, and the anti-rotation ridges at the other two places will start to contact with the through groove surface of the lens barrel to avoid the fixed tilt of the fixing ring. Such a structure can greatly limit the tilting freedom of the fixing ring, ensure the concentricity of the optical axes of the first lens and the second lens, and ensure the optical effect of the entire VR glasses; and the assembly of the fixing ring and the lens barrel belongs to the gap assembly fit (three unequal distances) (inconsistent circumference). A rubber ring is provided between the fixing ring and the lens barrel, so that the rubber ring and the lens barrel have an interference fit, and the interference amount causes an equidistant gap a to be generated around the lens barrel and the fixing ring, so as to avoid the uneven gap a causing the optical axis to be eccentric. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a structural schematic diagram of a VR glasses;

[0018] Figure 2 An exploded view of a VR glasses;

[0019] Figure 3 A cross-sectional view of a VR glasses;

[0020] Figure 4 It is the structural schematic diagram of the lens barrel;

[0021] Figure 5 It is a schematic diagram of the structure of the fixed ring.

[0022] The markings in the figure are: 1. front cover; 2. first lens; 3. fixing ring; 301. square column; 302. cylinder; 303. mounting groove; 4. focusing ring; 401. spiral groove; 5. lens barrel; 501. through groove; 502. guide groove; 6. back cover; 7. LCD display; 8. rubber ring; 9. second lens. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0025] A focusing positioning structure for VR glasses comprises a lens barrel 5 and a fixing ring 3, wherein the lens barrel 5 is provided with a plurality of vertically arranged through grooves 501 in the height direction, the outer side of the fixing ring 3 is provided with a plurality of anti-rotation ridges, the fixing ring 3 is installed in the lens barrel 5, and the anti-rotation ridges extend into the through grooves 501, a rubber ring 8 is installed on the outer side of the fixing ring 3, and the rubber ring 8 is respectively in contact with the fixing ring 3 and the lens barrel 5 to form an interference connection.

[0026] Preferably, the anti-rotation convex ridge includes a square column 301 and a round column 302, one end of the square column 301 is connected to the fixing ring 3, and the other end is connected to the round column 302, and the square column 301 is located at the through groove 501, and the round column 302 extends out of the through groove 501;

[0027] Specifically, by setting the anti-rotation ribs to include square columns 301 and circular columns 302, and utilizing the square columns 301 to cooperate with the through grooves 501, when one of the anti-rotation ribs of the fixing ring 3 tilts, the other places will slide asynchronously, and the other two anti-rotation ribs will begin to contact the through groove 501 surface of the lens barrel 5, thereby preventing the fixing ring 3 from being fixedly tilted. Such a structure can greatly limit the freedom of tilt of the fixing ring 3, thereby ensuring the optical performance of the VR glasses.

[0028] Preferably, three through slots 501 are provided on the lens barrel 5 , and three anti-rotation ridges are provided on the outer side of the fixing ring 3 .

[0029] Preferably, a mounting groove 303 is formed on the outer side of the fixing ring 3 , and the rubber ring 8 is sleeved in the mounting groove 303 , so that the rubber ring 8 is easily installed on the fixing ring 3 .

[0030] Preferably, a plurality of guide grooves 502 are provided at the end of the lens barrel 5 , and the plurality of guide grooves 502 are respectively connected to the plurality of through grooves 501 , and the anti-rotation ridges extend into the through grooves 501 through the guide grooves 502 , thereby achieving positioning and installation of the lens barrel 5 and the fixing ring 3 .

[0031] Preferably, the fixing ring 3 and the anti-rotation rib are integrally formed.

[0032] A VR glasses, comprising a front cover 1, a focusing ring 4, a first lens 2, a second lens 9, an LCD display screen 7 and a back cover 6, wherein the front cover 1 and the first lens 2 are both mounted on the top of a lens barrel 5 and the first lens 2 is located between the front cover 1 and the lens barrel 5, the focusing ring 4 is mounted on the outside of the lens barrel 5 and is rotatably connected to the lens barrel 5, and a plurality of spiral grooves 401 are provided on the inner ring of the focusing ring 4, the anti-rotation convex ridge passes through the through groove 501 and extends into the spiral groove 401, the second lens 9 is mounted on a fixing ring 3, the LCD display screen 7 and the back cover 6 are both mounted on the bottom of the lens barrel 5, and the LCD display screen 7 is located between the back cover 6 and the lens barrel 5.

[0033] Preferably, a plurality of O-rings are provided between the lens barrel 5 and the focusing ring 4 to ensure the overall sealing of the entire VR glasses.

[0034] advantage:

[0035] In the present invention, a through groove 501 is provided on the lens barrel 5, and an anti-rotation ridge is provided on the fixing ring 3, so that the anti-rotation ridge cooperates with the through groove 501, so that when one anti-rotation ridge of the fixing ring 3 tilts, the other places will slide asynchronously, and the anti-rotation ridges of the other two places will start to contact with the surface of the through groove 501 of the lens barrel 5, avoiding the fixed tilt of the fixing ring 3. Such a structure can greatly limit the tilt freedom of the fixing ring 3 and ensure the concentricity of the optical axes of the first lens 2 and the second lens 9. The optical effect of the entire VR glasses is ensured;

[0036] And the assembly of the fixing ring 3 and the lens barrel 5 belongs to the clearance assembly fit (three unequal distances) (circumference is inconsistent) as shown in Figure 3 As shown, by setting a rubber ring 8 between the fixing ring 3 and the lens barrel 5, the rubber ring 8 and the lens barrel 5 are interference fit, and the interference amount is such that an equidistant gap a is generated around the lens barrel 5 and the fixing ring 3, thereby avoiding eccentricity of the optical axis caused by uneven gap a.

[0037] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A positioning structure for focusing VR glasses, characterized by: It includes a lens barrel and a fixing ring, wherein the lens barrel is provided with a plurality of vertically arranged through grooves in the height direction, the outer side of the fixing ring is provided with a plurality of anti-rotation ridges, the fixing ring is installed in the lens barrel, and the anti-rotation ridges extend into the through grooves, and a rubber ring is installed on the outer side of the fixing ring, and the rubber ring is respectively in contact with the fixing ring and the lens barrel to form an interference connection.

2. A focusing positioning structure for VR glasses according to claim 1, characterized in that: The anti-rotation convex ridge comprises a square column and a round column, one end of the square column is connected to the fixing ring, and the other end is connected to the round column, and the square column is located at the through slot, and the round column extends out of the through slot.

3. The focusing positioning structure of VR glasses according to claim 1, characterized in that: The lens barrel is provided with three through slots, and the outer side of the fixing ring is provided with three anti-rotation ridges.

4. The focusing positioning structure of VR glasses according to claim 1, characterized in that: The outer side of the fixing ring is provided with a mounting groove, and the rubber ring is sleeved in the mounting groove.

5. The focusing positioning structure of VR glasses according to claim 1, characterized in that: The end of the lens barrel is provided with a plurality of guide grooves, the plurality of guide grooves are respectively connected with a plurality of through grooves, and the anti-rotation convex ridges extend into the through grooves through the guide grooves.

6. The focusing positioning structure of VR glasses according to claim 1, characterized in that: The fixing ring and the anti-rotation convex ridge are integrally formed.

7. A VR glasses comprising the VR glasses focusing positioning structure according to any one of claims 1 to 6, characterized in that: The lens comprises a front cover, a focus ring, a first lens, a second lens, an LCD display screen and a rear cover, wherein the front cover and the first lens are both mounted on the top of the lens barrel and the first lens is located between the front cover and the lens barrel, the focus ring is mounted on the outside of the lens barrel and is rotatably connected to the lens barrel, and a plurality of spiral grooves are arranged on the inner ring of the focus ring, the anti-rotation ridges pass through the through grooves and extend into the spiral grooves, the second lens is mounted on a fixing ring, the LCD display screen and the rear cover are both mounted on the bottom of the lens barrel, and the LCD display screen is located between the rear cover and the lens barrel.

8. The VR glasses according to claim 7, characterized in that: A plurality of O-rings are arranged between the lens barrel and the focusing ring.

Images