Lens positioning mechanism

Abstract

The utility model relates to the technical field of tool clamps, and provides a lens positioning mechanism which comprises a base, at least two clamping pieces and an elastic piece, a containing groove is formed in the base, the clamping pieces are arranged along the peripheral side of the base, a gap is reserved between the clamping pieces and the base, the middle sections of the clamping pieces and the base are rotationally arranged, and the elastic piece is arranged between the clamping pieces and the base. The two ends of the elastic piece are connected with the base and the clamping piece correspondingly, and the elastic piece is located on the side, away from the containing groove, of the rotating position of the clamping piece. When the elastic piece is pressed, the side, close to the containing groove, of the clamping piece rotates in the direction away from the base, and when the elastic piece is released, the side, close to the containing groove, of the clamping piece rotates in the direction close to the base. On the basis, the lens can be conveniently and well positioned.

Description

Technical Field

[0001] The present application relates to the field of tooling fixtures, and in particular to a lens positioning mechanism. Background Art

[0002] During the production process of AR / VR glasses, the lenses need to undergo production processes such as film sticking and gluing. During this process, the lenses need to be positioned to ensure the accuracy of the processing positions of the film sticking and gluing processes to ensure the quality of the finished product.

[0003] In some applications, an integral contouring tool is used to position the lens, that is, a space in the shape of the lens is reserved on the tool, and when processing is required, the lens is placed in the space for contact positioning, thereby reducing misalignment during processing and ensuring the quality of the finished product.

[0004] However, the space reserved for the contour processing is fixed. When the reserved space is small, the lens can only be put in, and it is difficult to put in and take out the lens; when the reserved space is large, a gap will be formed between the lens and the tooling after it is put in, causing the lens to easily move during the processing, and the positioning effect is extremely poor.

[0005] Therefore, the present application provides a lens positioning mechanism, which enables convenient and better positioning of the lens. Utility Model Content

[0006] In order to facilitate and better position the lens, the present application provides a lens positioning mechanism.

[0007] The present application provides a lens positioning mechanism, which adopts the following technical solution:

[0008] A lens positioning mechanism comprises a base, at least two clamping members and an elastic member, wherein the base is provided with a placement groove, the clamping members are arranged along the outer peripheral side of the base and are spaced apart from the base, the middle section of the clamping members is rotatably arranged with the base, the two ends of the elastic member are respectively connected to the base and the clamping members, and the elastic member is located on the side of the clamping member rotating away from the placement groove; when the elastic member is pressed, the side of the clamping member close to the placement groove rotates in a direction away from the base, and when the elastic member is released, the side of the clamping member close to the placement groove rotates in a direction close to the base.

[0009] By adopting the above technical solution, when the lens needs to be processed, the clamping member is pressed away from the side of the placement groove, that is, the elastic member is pressed, so that the side of the clamping member close to the placement groove is rotated in the direction away from the base, that is, the clamping member is opened, and the lens can be placed in the placement groove; after the lens is placed, the clamping member is released, that is, the elastic member is relaxed, so that the side of the clamping member close to the placement groove is rotated in the direction close to the base, even if the clamping members are close to each other to clamp the lens, so as to fix the lens and achieve accurate positioning of the lens. When it needs to be taken out, the lens can be easily taken out by only opening the clamping member; therefore, the lens can be conveniently positioned well.

[0010] Optionally, when the elastic member is relaxed and the clamping members are close to each other, adjacent clamping members abut against each other and the inner circle forms a circular hollow structure.

[0011] By adopting the above technical solution, it is possible to better fit with the outer peripheral side of the lens, so that the lens can be better positioned and fixed.

[0012] Optionally, mounting grooves are provided at intervals on the circumference of the base, and the clamping member is embedded in the mounting grooves and is rotatably connected to the base on both sides of the mounting grooves.

[0013] By adopting the above technical solution, the space around the base can be saved and the clamping member can be easily installed.

[0014] Optionally, a rotating shaft is further included, and the rotating shaft passes through the base on one side of the installation slot, the clamping member, and the base on the other side of the installation slot in sequence.

[0015] Optionally, a limiting member is further included, wherein the limiting member is sleeved on the rotating shaft, and two sides of the limiting member are respectively in contact with the rotating shaft and the base.

[0016] By adopting the above technical solution, the limiting member can reduce the gap between the rotating shaft and the base and limit the movement of the rotating shaft, so that the installation of the rotating shaft can be more stable.

[0017] Optionally, the sides of the clamping members that are close to each other have an inclined abutment portion, and the distance between the abutment portions close to the base is greater than the distance between the abutment portions away from the base.

[0018] By adopting the above technical solution, the contact area between the clamping member and the lens can be reduced when clamping the lens, thereby better protecting the lens.

[0019] Optionally, it further includes a push rod and a driving member, wherein the driving member drives the push rod to move closer to or away from a side of the clamping member away from the placement groove.

[0020] By adopting the above technical solution, the driving member drives the push rod to approach the clamping member to press the clamping member, so that the clamping member is close to one end of the placement groove and moves away from each other, so that the clamping member can be easily opened or clamped.

[0021] Optionally, the elastic member is a spring.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When the lens needs to be processed, the clamping member is pressed away from the side of the placement groove, that is, the elastic member is pressed, so that the side of the clamping member close to the placement groove is rotated away from the base, that is, the clamping member is opened, and the lens can be placed in the placement groove; after the lens is placed, the clamping member is released, that is, the elastic member is loosened, so that the side of the clamping member close to the placement groove is rotated towards the base, even if the clamping members are close to each other to clamp the lens, so as to fix the lens and accurately position the lens. When it needs to be taken out, the lens can be conveniently taken out by simply opening the clamping member; therefore, the lens can be conveniently positioned well;

[0024] 2. It enables better fit with the outer peripheral side of the lens, so as to better position and fix the lens;

[0025] 3. The limiting member can reduce the gap between the rotating shaft and the base and limit the movement of the rotating shaft, so that the installation of the rotating shaft can be more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a lens positioning mechanism according to an embodiment of the present application;

[0027] Figure 2 is a cross-sectional schematic diagram of a lens positioning mechanism in an embodiment of the present application when the clamping member is in a clamping state on the lens;

[0028] Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0029] Figure 4 It is a schematic structural diagram of the lens positioning mechanism according to the embodiment of the present application when two clamping members are not matched with the base.

[0030] Figure numerals: 1. base; 2. clamping member; 3. placement groove; 4. elastic member; 5. machine table; 6. fixing groove; 7. abutment portion; 8. installation groove; 9. rotating shaft; 10. limiting member; 11. push rod; 12. driving member; 13. telescopic groove. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The present application embodiment discloses a lens positioning mechanism. Figure 1 The lens positioning mechanism includes a base 1 and at least two clamping members 2. The base 1 is used to position and place the lens, and the clamping members 2 are used to clamp and fix the lens. In this embodiment, four clamping members 2 are provided. The base 1 is provided with a placement groove 3. The clamping members 2 are arranged along the outer peripheral side of the base 1, and there is a spacing between the base 1. The middle section of the clamping members 2 is rotatably arranged with the base 1; it also includes a machine platform 5. The base 1 is installed on the machine platform 5. The rotation center of the middle section of the clamping member 2 extends out of the machine platform 5, that is, the rotation center of the clamping member 2 is located outside the machine platform 5, so that it can rotate smoothly.

[0033] Reference Figure 2 , the lens positioning mechanism also includes an elastic member 4. In some embodiments, the elastic member 4 is a spring. The two ends of the elastic member 4 are respectively connected to the base 1 and the clamping member 2. In this embodiment, the base 1 and the clamping member 2 are both provided with a fixing groove 6, and the elastic member 4 extends into the fixing groove 6 and is respectively connected to the base 1 and the clamping member 2. And the elastic member 4 is located on the side of the clamping member 2 that is away from the placement groove 3; when the elastic member 4 is pressed, the side of the clamping member 2 close to the placement groove 3 rotates in a direction away from the base 1, that is, the clamping member 2 opens, and at this time, the lens can be placed in the placement groove 3, or the lens can be taken out of the placement groove 3, which can facilitate the placement and removal of the lens. When the elastic member 4 is released, the side of the clamping member 2 close to the placement groove 3 rotates in a direction close to the base 1, and at this time, the lens placed on the placement groove 3 can be clamped by the clamping member 2, so that the position of the lens is fixed, and accurate positioning is achieved, so that the lens can be positioned more conveniently.

[0034] Reference Figure 3 In some embodiments, the sides of the clamping members 2 that are close to each other have an inclined abutment portion 7, and the distance between the abutment portion 7 close to the base 1 is greater than the distance between the abutment portion 7 away from the base 1. This can reduce the height contact area with the peripheral side of the lens, better protect the lens; at the same time, the lens is pressed inward and downward, so that the lens can be clamped more stably, so that the positioning of the lens is more accurate.

[0035] Reference Figure 4 In some embodiments, when the elastic member 4 is relaxed and the clamping members 2 are close to each other, adjacent clamping members 2 abut against each other, and the inner circle forms a circular hollow structure, which is adapted to the outer peripheral side of the lens. The structure formed by the inner circle can be changed according to actual conditions to adapt to the shape of the lens, so that the lens can be clamped more stably and the positioning of the lens can be more accurate.

[0036] In some embodiments, mounting grooves 8 are provided at intervals on the circumference of the base 1. In this embodiment, four mounting grooves 8 are evenly spaced, corresponding to four clamping members 2 respectively. The clamping members 2 are embedded in the mounting grooves 8 and rotatably connected to the base 1 on both sides of the mounting grooves 8. This can save space, and the embedded arrangement of the clamping members 2 can better clamp the lenses by approaching each other.

[0037] In some embodiments, the lens positioning mechanism further includes a rotating shaft 9, which sequentially passes through the base 1 on one side of the installation slot 8, the clamping member 2, and the base 1 on the other side of the installation slot 8. The clamping member 2 rotates around the rotating shaft 9 as the rotation center, the base 1 is fixedly connected to the rotating shaft 9, and the clamping member 2 is rotationally connected to the rotating shaft 9; or the rotating shaft 9 is rotationally connected to the base 1, and the clamping member 2 is fixedly connected to the rotating shaft 9.

[0038] In some embodiments, the lens positioning mechanism further includes a stopper 10, which is sleeved on the rotating shaft 9, and the two sides of the stopper 10 are respectively in contact with the rotating shaft 9 and the base 1. In this embodiment, the stopper 10 has an opening on one side, and is sleeved on the rotating shaft 9. The stopper 10 can reduce the gap error between the rotating shaft 9 and the base 1, so that the rotating shaft 9 can be more stable.

[0039] Refer again Figure 2 In some embodiments, the lens positioning mechanism further includes a push rod 11 and a driving member 12. In this embodiment, the driving member 12 is a cylinder. The push rod 11 and the driving member 12 are arranged in a one-to-one correspondence. The push rod 11 and the clamping member 2 are arranged in a one-to-one correspondence. In this embodiment, four push rods 11 are arranged. In this embodiment, the machine 5 is provided with a telescopic slot 13. The push rod 11 moves along the telescopic slot 13. The driving member 12 is fixed to the outside of the machine 5. The driving member 12 drives the push rod 11 to approach or move away from the side of the clamping member 2 away from the placement slot 3. When the push rod 11 approaches the clamping member 2, the push rod 11 presses the clamping member 2, and the elastic member 4 is compressed, so that the clamping member 2 opens. When the push rod 11 moves away from the clamping member 2, the elastic member 4 relaxes, and the clamping members 2 approach each other to clamp the lens.

[0040] The implementation principle of a lens positioning mechanism in an embodiment of the present application is as follows: when it is necessary to process the lens, the clamping member 2 is pressed away from the side of the placement groove 3, that is, the elastic member 4 is pressed, so that the side of the clamping member 2 close to the placement groove 3 is rotated in the direction away from the base 1, that is, the clamping member 2 is opened, and the lens can be placed in the placement groove 3 at this time; after the lens is placed, the clamping member 2 is released, that is, the elastic member 4 is relaxed, so that the side of the clamping member 2 close to the placement groove 3 is rotated in the direction close to the base 1, even if the clamping members 2 are close to each other to clamp the lens, so as to fix the lens and achieve accurate positioning of the lens. When it needs to be taken out, it is only necessary to open the clamping member 2 to conveniently take out the lens; therefore, the lens can be conveniently positioned well.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lens positioning mechanism, characterized in that: It includes a base, at least two clamping members and an elastic member, the base is provided with a placement groove, the clamping members are arranged along the outer circumference of the base and have a spacing between them, the middle section of the clamping member is rotatably arranged with the base, the two ends of the elastic member are respectively connected to the base and the clamping member, and the elastic member is located on the side of the clamping member rotating away from the placement groove; when the elastic member is pressed, the side of the clamping member close to the placement groove rotates in a direction away from the base, and when the elastic member is released, the side of the clamping member close to the placement groove rotates in a direction close to the base.

2. A lens positioning mechanism according to claim 1, characterized in that: When the elastic member is relaxed and the clamping members are close to each other, the adjacent clamping members abut against each other, and the inner circle forms a circular hollow structure.

3. A lens positioning mechanism according to claim 1, characterized in that: The circumferential side of the base is provided with installation grooves at intervals, and the clamping member is embedded in the installation grooves and is rotatably connected to the base at both sides of the installation grooves.

4. A lens positioning mechanism according to claim 3, characterized in that: It also includes a rotating shaft, which sequentially passes through the base on one side of the installation slot, the clamping member, and the base on the other side of the installation slot.

5. A lens positioning mechanism according to claim 4, characterized in that: It also includes a limiting member, which is sleeved on the rotating shaft, and two sides of the limiting member are respectively in contact with the rotating shaft and the base.

6. A lens positioning mechanism according to claim 1 or 2, characterized in that: The sides of the clamping members that are close to each other have an inclined abutting portion, and the distance between the abutting portions close to the base is greater than the distance between the abutting portions away from the base.

7. A lens positioning mechanism according to claim 1, characterized in that: It also includes a push rod and a driving member, and the driving member drives the push rod to approach or move away from the side of the clamping member away from the placement groove.

8. The lens positioning mechanism according to claim 1, characterized in that: The elastic member is a spring.

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