Wear resistance testing device for camera lens

Abstract

The utility model belongs to the field of wear resistance testing of lenses, and discloses a wear resistance testing device for a camera lens, which comprises a rack assembly for supporting and limiting, and a clamping assembly arranged in the middle of the rack assembly and used for clamping and centering front and back, the top of the rack assembly is provided with a friction assembly used for lifting up and down to push belt type circulation friction. The clamping assembly comprises a force application mechanism, two sliding frames are symmetrically installed on the force application mechanism, and clamping plates are symmetrically arranged on the sliding frames. The friction assembly comprises a lifting frame, two hydraulic cylinders are symmetrically installed on the lifting frame, and a power mechanism is installed below the lifting frame. According to the wear resistance testing device for the camera lens, the uniformity of friction of the camera lens is ensured through the arrangement of belt type circulating friction; through the arrangement that the two ends push the friction belts to press downwards, the balance of applied force is guaranteed; and through the arrangement of front and back clamping and centering, the accuracy of the wear resistance test is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of lens abrasion resistance testing, and in particular relates to an abrasion resistance testing device for camera lenses. Background Technology

[0002] The camera lens is the most critical component of a video system. Its quality directly impacts the overall performance of the camera. The lens is analogous to the lens of the human eye; without it, the eye cannot see anything. Without a lens, the image output by the camera would be a blank, unreadable image. Lenses are particularly prone to getting dirty, but dust should not be wiped away frequently. The surface of the lens elements has a protective film, and frequent wiping will damage these components. Therefore, camera lenses require abrasion resistance testing.

[0003] Comparing with Chinese Patent No. CN216905128U, a wear resistance testing device for vehicle-mounted camera lenses is disclosed. The device includes a worktable with a fixed frame bolted to its top and a fixed box bolted to its top. The fixed box is located within the cavity of the fixed frame. Through the cooperation of a second motor, a driving gear, a driven gear, a lead screw, a moving block, and a clamping plate, the device secures the vehicle-mounted camera, preventing it from shifting, falling, or colliding with objects, thus improving the accuracy of the experiment. The user places the vehicle-mounted camera on the fixed box and then turns on the second motor. The second motor drives the second rotating shaft to rotate, which in turn drives the driving gear to rotate, which in turn drives the driven gear to rotate. The driven gear then drives the lead screw to rotate, causing the moving block to move upwards, which in turn moves the movable rod upwards. The movable rod then moves the clamping plate in opposite directions to secure the vehicle-mounted camera.

[0004] However, the aforementioned patented cantilever intermittent friction of the camera lens cannot guarantee the uniformity of friction or the balance of force applied due to the inconsistent speed at various radial points. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a wear resistance testing device for camera lenses to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wear resistance testing device for a camera lens includes a frame assembly for support and limiting, and a clamping assembly for front-to-back clamping and centering is disposed in the middle of the frame assembly. A friction assembly for vertically lifting and pushing a belt-type circulating friction is installed on the top of the frame assembly. The clamping assembly includes a force-applying mechanism, on which two slides are symmetrically mounted, and clamping plates are symmetrically disposed on the slides. The friction assembly includes a lifting frame, on which two hydraulic cylinders are symmetrically mounted, and a power mechanism is installed below the lifting frame.

[0008] Furthermore: the frame assembly includes a support mechanism, the support mechanism is provided with a limiting groove in the middle, and sliding grooves are symmetrically arranged before and after the limiting groove.

[0009] Furthermore: the support mechanism includes a workbench, a fixed frame is provided on the workbench, and four support legs are evenly provided at the four corners of the bottom of the workbench. The workbench, the fixed frame and the support legs are welded together.

[0010] Furthermore: the force-applying mechanism includes a screw with positive and negative threads, on which two threaded sleeves are symmetrically installed, and a hand crank is installed at one end of the screw with positive and negative threads.

[0011] Furthermore, the two clamping plates are inclined inwards, and anti-slip pads are attached to their opposite surfaces.

[0012] Furthermore: the power mechanism includes two symmetrically arranged transmission rollers, a friction belt is installed between the transmission rollers, and a servo motor is installed on one of the transmission rollers.

[0013] Furthermore: the limiting groove is square and 5 mm deep.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] 1. The uniformity of friction on the camera lens is ensured by the setting of belt-type circulating friction;

[0016] 2. The setting of pushing the friction belt down at both ends ensures the balance of the applied force;

[0017] 3. The front and rear clamping alignment ensures the accuracy of the wear resistance test. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a wear resistance testing device for a camera lens according to the present invention;

[0019] Figure 2 This is a schematic diagram of the frame assembly of the abrasion resistance testing device for a camera lens according to the present invention;

[0020] Figure 3 This is a schematic diagram of the clamping component of the wear resistance testing device for a camera lens according to the present invention;

[0021] Figure 4 This is a right view of the clamping assembly of the abrasion resistance testing device for a camera lens according to the present invention;

[0022] Figure 5 This is a schematic diagram of the friction component of a wear resistance testing device for a camera lens according to the present invention.

[0023] In the attached diagram, the following are the reference numerals: 101, worktable; 102, fixed frame; 103, support leg; 104, limiting groove; 105, slide groove; 201, positive and negative threaded screw; 202, threaded sleeve; 203, hand crank; 204, slide; 205, clamping plate; 206, anti-slip pad; 301, lifting frame; 302, hydraulic cylinder; 303, transmission roller; 304, friction belt; 305, servo motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 A wear resistance testing device for a camera lens includes a frame assembly for support and limiting, a clamping assembly for front and rear clamping and centering is disposed in the middle of the frame assembly, and a friction assembly for vertically lifting and pushing the belt to circulate friction is installed on the top of the frame assembly.

[0026] In this embodiment: the frame assembly includes a support mechanism, with a limiting groove 104 in the middle of the support mechanism. The limiting groove 104 is square and 5 mm deep. Sliding grooves 105 are symmetrically arranged at the front and back of the limiting groove 104. The support mechanism includes a worktable 101, with a fixed frame 102 on the worktable 101. Four support legs 103 are evenly arranged at the four corners of the bottom of the worktable 101. The worktable 101, the fixed frame 102, and the support legs 103 are welded together. The support legs 103 support the worktable 101 and place the camera lens in the limiting groove 104 on the worktable 101 to reduce sliding. The sliding grooves 105 are used to limit the movement direction of the slide 204. The fixed frame 102 supports the hydraulic cylinder 302.

[0027] In this embodiment: the clamping assembly includes a force-applying mechanism, on which two slides 204 are symmetrically mounted, and clamping plates 205 are symmetrically arranged on the slides 204; the force-applying mechanism includes a positive and negative threaded screw 201, on which two threaded sleeves 202 are symmetrically mounted, and a hand crank 203 is installed at one end of the positive and negative threaded screw 201; the two clamping plates 205 are inclined inward, and anti-slip pads 206 are attached to their opposite surfaces; by rotating the positive and negative threaded screw 201 with the hand crank 203, the two threaded sleeves 202 are pushed closer to each other, and the threaded sleeves 202 drive the slides 204 to move along the slide groove 105, so that the clamping plates 205 clamp and fix the camera lens from the front and rear through the anti-slip pads 206;

[0028] In this embodiment: the friction assembly includes a lifting frame 301, on which two hydraulic cylinders 302 are symmetrically mounted, and a power mechanism is installed below the lifting frame 301; the power mechanism includes two symmetrically arranged transmission rollers 303, and a friction belt 304 is installed between the transmission rollers 303, and a servo motor 305 is installed on one of the transmission rollers 303; the lifting frame 301 supports the servo motor 305 to drive the transmission rollers 303 to rotate, pushing the friction belt 304 to circulate, while the fixed frame 102 supports the hydraulic cylinders 302 to extend and push the lifting frame 301 to descend, so that the friction belt 304 contacts the camera lens for friction.

[0029] Working principle: First, place the camera lens in the limiting groove 104 on the worktable 101. Then, rotate the positive and negative threaded screw 201 by the hand crank 203 to push the two threaded sleeves 202 closer to each other. The threaded sleeves 202 drive the slide 204 to move along the slide groove 105, so that the clamping plate 205 clamps and fixes the camera lens from the front and back through the anti-slip pad 206. Then, the lifting frame 301 supports the servo motor 305 to drive the transmission roller 303 to rotate, pushing the friction belt 304 to circulate. The fixed frame 102 supports the hydraulic cylinder 302 to extend and push the lifting frame 301 to descend, so that the friction belt 304 contacts the camera lens to rub.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear resistance testing device for a camera lens, comprising a frame assembly for support and limiting, characterized in that: It also includes a clamping assembly for front and rear clamping and centering in the middle of the frame assembly, and a friction assembly for vertically lifting and pushing the belt to circulate friction on the top of the frame assembly; The clamping assembly includes a force-applying mechanism, on which two slides (204) are symmetrically mounted, and clamping plates (205) are symmetrically arranged on the slides (204); The friction assembly includes a lifting frame (301), on which two hydraulic cylinders (302) are symmetrically mounted, and a power mechanism is installed below the lifting frame (301).

2. The abrasion resistance testing device for a camera lens according to claim 1, characterized in that: The frame assembly includes a support mechanism, a limiting groove (104) is provided in the middle of the support mechanism, and sliding grooves (105) are symmetrically provided in front and behind the limiting groove (104).

3. The abrasion resistance testing device for a camera lens according to claim 2, characterized in that: The support mechanism includes a workbench (101), a fixed frame (102) is provided on the workbench (101), and four support legs (103) are evenly provided at the four corners of the bottom of the workbench (101). The workbench (101), the fixed frame (102) and the support legs (103) are welded together.

4. The abrasion resistance testing device for a camera lens according to claim 1, characterized in that: The force-applying mechanism includes a screw rod (201) with two threaded sleeves (202) symmetrically installed on the screw rod (201), and a hand crank (203) is installed at one end of the screw rod (201).

5. The abrasion resistance testing device for a camera lens according to claim 4, characterized in that: The two clamping plates (205) are inclined inward and anti-slip pads (206) are attached to their opposite surfaces.

6. The abrasion resistance testing device for a camera lens according to claim 1, characterized in that: The power mechanism includes two symmetrically arranged transmission rollers (303), a friction belt (304) is installed between the transmission rollers (303), and a servo motor (305) is installed on one of the transmission rollers (303).

7. The abrasion resistance testing device for a camera lens according to claim 2, characterized in that: The limiting groove (104) is square and 5 mm deep.

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