Module test fixture with precise multi-section spacing

Abstract

The utility model relates to the camera module detection field, and discloses an accurate multi-segment spacing module test tool comprising a fixed pedestal, the top surface of the fixed pedestal is slidably connected with a support assembly through a guide rail and a slide block, the support assembly is used for supporting a camera module, the top of the fixed pedestal is fixedly connected with an electric push rod, and the electric push rod is used for driving the camera module to move. The front face of the supporting assembly is fixedly connected to the telescopic end of the rear side of the electric push rod. The supporting assembly comprises a connecting bottom plate, the bottom face of the connecting bottom plate is fixedly connected to the top face of the sliding block, and the top faces of the left side and the right side of the bottom plate are each fixedly connected with a set of supporting plates. According to the utility model, through the arrangement of the slide block, the slide column and the damping disc, the camera module can move back and forth on the two slide rails, and the height and angle of the camera module can be adjusted to adapt to the height of an object to be detected, so that the test distance can be accurately and effectively controlled for detection, and the detection data is relatively accurate.

Description

Technical Field

[0001] The utility model relates to the field of camera module detection, and in particular to a module testing fixture with precise multi-segment spacing. Background Art

[0002] Camera module testing is a comprehensive evaluation process designed to ensure stable camera operation and the expected imaging results under various conditions. Testing encompasses everything from basic functional verification to comprehensive examinations of image quality, performance, and stability. This includes checking the camera's ability to boot up, capture, and transmit images properly; evaluating image quality metrics such as resolution, color reproduction, white balance, and dynamic range; and testing performance parameters such as frame rate, exposure control, and brightness uniformity. Furthermore, the camera module's stability is tested under various operating conditions to ensure reliable operation in real-world applications.

[0003] Traditional camera module testing involves fixing the camera module on a fixture and then testing the camera's performance by moving the position of the light source board. However, in the camera module testing required for new smart door locks, the camera is generally used to recognize faces or finger veins to unlock the door lock. Therefore, in order to ensure the accuracy of camera module recognition, liveness testing is required. During liveness testing, if a person or palm is moved back and forth, the accuracy of the movement distance cannot be controlled, and the test data is not accurate enough to effectively achieve the precise multi-segment test requirements. Therefore, a module test fixture with precise multi-segment spacing is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the present invention provides a module testing fixture with precise multi-segment spacing, aiming to improve the problem in the prior art that the accuracy of the moving distance cannot be controlled when a person or a palm moves back and forth.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a precise multi-segment spacing module test fixture, comprising a fixed base, characterized in that: the top surface of the fixed base is slidably connected to a support assembly via a guide rail and a slider, the support assembly is used to support the camera module, the top of the fixed base is fixedly connected to an electric push rod, and the front of the support assembly is fixedly connected to the telescopic end on the rear side of the electric push rod;

[0006] The support assembly includes a connecting base plate, the bottom surface of which is fixedly connected to the top surface of the slider, and a group of supporting plates are fixedly connected to the top surfaces of the left and right sides of the base plate respectively;

[0007] The support plate is fixedly connected to a connecting round block via a sliding limit assembly, and the sliding limit assembly is used to drive and adjust the height of the connecting round block;

[0008] The inner side of the connecting circle is rotatably connected to a damping disc, the inner side of the damping disc is fixedly connected to the outer side of the support plate, and the front side of the support plate is detachably connected to a fixing component, which is used to fix the camera.

[0009] As a further description of the above technical solution:

[0010] A stopper is fixedly connected to the top of the connecting circular block, a stopper column is fixedly connected to the front of the damping disc, and the front of the stopper contacts the outer peripheral surface of the stopper column.

[0011] As a further description of the above technical solution:

[0012] The top of the fixed base is fixedly connected with an arm support frame.

[0013] As a further description of the above technical solution:

[0014] The sliding limit assembly includes a sliding column, the outer periphery of which is slidably connected to the inside of the support plate, a limiting groove is provided inside the sliding column, the inner side of the limiting groove is elastically connected to the limiting protrusion through a limiting spring, the outer side of the support plate is fixedly connected to the limiting seat, and the inner wall of the limiting seat is provided with a card slot.

[0015] As a further description of the above technical solution:

[0016] An arc surface is arranged on the outer side of the limiting protrusion, and the limiting protrusion is clamped in the inner side of the clamping slot.

[0017] As a further description of the above technical solution:

[0018] A rounded sliding groove is provided inside the support plate, and the outer periphery of the sliding column is slidably connected to the inside of the rounded sliding groove.

[0019] As a further description of the above technical solution:

[0020] The fixing assembly includes a product tray, the back of which is detachably connected to the front of the fixing frame, a fixing cover is hinged on the right side of the product tray, a clamping block is fixedly connected to the left side of the fixing cover, a fixing column is fixedly connected to the inside of the product tray, a rotating circular sleeve is elastically connected to the outer periphery of the fixing column via a spiral spring, a buckle is fixedly connected to the front of the rotating circular sleeve, and the inner side of the buckle is clamped with the outer side of the clamping block.

[0021] As a further description of the above technical solution:

[0022] One end of the spiral spring is fixedly connected to the outer periphery of the fixed column, and the other end of the spiral spring is fixedly connected to the inside of the rotating sleeve. The outer periphery of the rotating sleeve is rotatably connected to the inside of the product tray.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the present invention, by setting a slider, a sliding column and a damping disc, the camera module can move back and forth on two slide rails. At the same time, the height and angle of the camera module can be adjusted to adapt to the height of the object to be measured, so that the test distance can be accurately and effectively controlled, and the detection data can be more accurate.

[0025] 2. In the present invention, by providing a damping disc, a block and a stop column, when the camera module is installed for inspection, the support of the block and the stop column can make the fixing frame be placed stably and horizontally, so that the camera module can be easily assembled inside the product tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall top surface of a precise multi-segment spacing module test fixture proposed by the present invention;

[0027] Figure 2 This is a front cross-sectional schematic diagram of a support plate of a module test fixture with precise multi-segment spacing proposed by the present invention;

[0028] Figure 3 This is a schematic cross-sectional view of the top surface of a sliding column of a module test fixture with precise multi-segment spacing proposed by the present invention;

[0029] Figure 4 This is a partial schematic diagram of the top cross-section of a product tray of a module test fixture with precise multi-segment spacing proposed by the present invention.

[0030] Legend:

[0031] 1. Fixed base; 2. Guide rail; 3. Slider; 4. Connecting bottom plate; 5. Support plate; 6. Rounded slide groove; 7. Sliding column; 8. Limit groove; 9. Limit spring; 10. Limit bump; 11. Limit seat; 12. Slot; 13. Connecting round block; 14. Damping disc; 15. Fixed bracket; 16. Product tray; 17. Fixed cover; 18. Block; 19. Fixed column; 20. Volute spring; 21. Rotating sleeve; 22. Buckle; 23. Stop column; 24. Block; 25. Electric push rod; 26. Arm support bracket. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1 The utility model provides an embodiment of a module test fixture with precise multi-stage spacing, comprising a fixed base 1 that serves as a fixed connection, the top surface of the fixed base 1 being slidably connected to a support assembly through a guide rail 2 and a slider 3, the guide rail 2 being provided with two groups, and the two groups of guide rails 2 being symmetrically arranged at the top of the fixed base 1, the guide rail 2 limiting the slider 3 to slide back and forth only along the outer periphery of the guide rail 2, the support assembly being used to support the camera module, the top of the fixed base 1 being fixedly connected with an electric push rod 25, the electric push rod 25 can accurately drive the rear telescopic end to move back and forth, the front of the support assembly is fixedly connected to the rear telescopic end of the electric push rod 25, when the electric push rod 25 is turned on, the rear telescopic end of the electric push rod 25 can drive the connecting base plate 4 to slide back and forth; the support assembly comprises a connecting base plate 4 that serves as a fixed connection, the bottom surface of the connecting base plate 4 being fixedly connected to the top surface of the slider 3, and a group of support plates 5 being fixedly connected to the left and right top surfaces of the connecting base plate 4.

[0034] Reference Figure 1 - Figure 3 The support plate 5 is fixedly connected with a connecting round block 13 through a sliding limit assembly, and the sliding limit assembly is used to drive and adjust the height of the connecting round block 13; the sliding limit assembly includes a sliding column 7, the outer periphery of the sliding column 7 is slidably connected to the inside of the support plate 5, and a rounded slide groove 6 is provided inside the support plate 5. The front and rear sides of the sliding column 7 are set as planes, so that the sliding column 7 can only slide up and down along the inner wall of the rounded slide groove 6 and cannot rotate. The outer periphery of the sliding column 7 is slidably connected to the inside of the rounded slide groove 6, and a limiting groove 8 is provided inside the sliding column 7. The limiting groove 8 is provided with two groups, which are symmetrically arranged in the front and rear inside the sliding column 7. The inner side of the limiting groove 8 is elastically connected to the limiting protrusion 10 through a limiting spring 9. When the limiting protrusion 1 When 0 is not under force, the limit spring 9 will push the limit protrusion 10 outward, and the limit groove 8 limits the limit protrusion 10 to slide back and forth only along the inner wall of the limit groove 8. The outer side of the support plate 5 is fixedly connected to the limit seat 11. The inner wall of the limit seat 11 is provided with a card groove 12. The outer side of the limit protrusion 10 is provided with an arc surface. The limit protrusion 10 is snapped into the inside of the card groove 12 to fix the sliding column 7. The inner side of the connecting circle 13 is rotatably connected with a damping disc 14. The damping disc 14 can rotate along the center of the connecting circle 13. At the same time, the damping disc 14 and the connecting circle 13 will generate a certain damping at the rotation point, so that the damping disc 14 can hover at any angle. The inner side of the damping disc 14 is fixedly connected to the outer side of the support plate 5.

[0035] Reference Figure 1 and Figure 4 The front of the support plate 5 is detachably connected to a fixing component, which is used to fix the camera. The fixing component includes a product tray 16 for conveniently fixing the camera module. The back of the product tray 16 is detachably connected to the front of the fixing frame 15. The right side of the product tray 16 is hinged with a fixing cover 17 for protecting the camera module. The left side of the fixing cover 17 is fixedly connected to a clamping block 18. The inside of the product tray 16 is fixedly connected to a fixing column 19. The outer periphery of the fixing column 19 is elastically connected to a rotating sleeve 21 through a spiral spring 20. When the rotating sleeve 21 is not under force, the spiral spring 20 will drive the rotating sleeve 21 to rotate counterclockwise. One end of the spiral spring 20 is fixedly connected to the outer periphery of the fixing column 19, and the other end of the spiral spring 20 is fixedly connected to the inside of the rotating sleeve 21. The outer periphery of the rotating sleeve 21 is rotatably connected to the inside of the product tray 16. The front of the rotating sleeve 21 is fixedly connected with a buckle 22, and the inner side of the buckle 22 is clamped with the outer side of the clamping block 18 to fix the fixing cover 17 on the product tray 16. The top of the fixed base 1 is fixedly connected to an arm support frame 26.

[0036] Reference Figure 2 The top of the connecting circle 13 is fixedly connected to a stopper 24, and the front of the damping disc 14 is fixedly connected to a stopper 23. The front of the stopper 24 contacts the outer peripheral surface of the stopper 23. At this time, the side of the fixed frame 15 with the product tray 16 is facing upward and cannot continue to rotate backward.

[0037] Working principle: When you want to conveniently adjust the position of the camera module for measurement, first install the camera module inside the product tray 16, toggle the buckle 22 to lock the block 18, and fix the fixing cover 17. At this time, push the fixing frame 15 up and down, and the fixing frame 15 drives the sliding column 7 to slide up and down. The sliding column 7 moves so that the limiting protrusion 10 is squeezed by the card slot 12, and the limiting protrusion 10 retracts inward into the inside of the limiting groove 8 while squeezing the limiting spring 9. When the limiting protrusion 10 slides to the position of the adjacent card slot 12, the limiting spring 9 pushes the limiting protrusion 10 outward, pushing the limiting protrusion 10 out, and the limiting protrusion 10 is engaged with the inside of the card slot 12, thereby adjusting the camera module to the same horizontal height as the palm or face to be detected. At this time, turn on the camera module and turn on the electric push rod 25 at the same time. The telescopic end of the rear side of the electric push rod 25 continuously drives the connecting base plate 4 to move forward, stops at each set point and detects the camera module, thereby ensuring the accuracy of the detection data. When you want to install the camera module conveniently, rotate the fixing bracket 15 backward, the fixing bracket 15 drives the damping disc 14 to rotate backward, and the damping disc 14 drives the blocking column 23 to rotate backward. When the blocking column 23 contacts the block 24, the fixing bracket 15 can be placed horizontally and firmly, and the product tray 16 is facing upward. At this time, the camera module can be conveniently assembled inside the product tray 16.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A precise multi-segment spacing module test fixture, comprising a fixed base (1), characterized in that: The top surface of the fixed base (1) is slidably connected to a support assembly via a guide rail (2) and a slider (3), and the support assembly is used to support the camera module. The top of the fixed base (1) is fixedly connected to an electric push rod (25), and the front surface of the support assembly is fixedly connected to the telescopic end at the rear side of the electric push rod (25); The support assembly comprises a connecting base plate (4), the bottom surface of the connecting base plate (4) is fixedly connected to the top surface of the slider (3), and a group of supporting plates (5) are fixedly connected to the top surfaces of the left and right sides of the base plate (4); A connecting round block (13) is fixedly connected to the interior of the support plate (5) via a sliding limit assembly, and the sliding limit assembly is used to drive and adjust the height of the connecting round block (13); The inner side of the connecting circular block (13) is rotatably connected to a damping disc (14), the inner side of the damping disc (14) is fixedly connected to the outer side of the support plate (5), and the front side of the support plate (5) is detachably connected to a fixing component, and the fixing component is used to fix the camera.

2. The precise multi-segment spacing module test fixture according to claim 1, characterized in that: A stopper (24) is fixedly connected to the top of the connecting circular block (13), a stopper column (23) is fixedly connected to the front of the damping disc (14), and the front of the stopper (24) contacts the outer peripheral surface of the stopper column (23).

3. The precise multi-segment spacing module test fixture according to claim 1, characterized in that: An arm support frame (26) is fixedly connected to the top of the fixed base (1).

4. The precise multi-segment spacing module test fixture according to claim 1, characterized in that: The sliding limit assembly comprises a sliding column (7), the outer periphery of the sliding column (7) is slidably connected to the inside of the support plate (5), a limit groove (8) is provided inside the sliding column (7), the inner side of the limit groove (8) is elastically connected to the limit protrusion (10) through a limit spring (9), the outer side of the support plate (5) is fixedly connected to the limit seat (11), and the inner wall of the limit seat (11) is provided with a card slot (12).

5. The module test fixture with precise multi-segment spacing according to claim 4, characterized in that: An arc surface is provided on the outer side of the limiting protrusion (10), and the limiting protrusion (10) is clamped inside the clamping slot (12).

6. The precise multi-segment spacing module test fixture according to claim 4, characterized in that: A rounded corner sliding groove (6) is provided inside the support plate (5), and the outer periphery of the sliding column (7) is slidably connected inside the rounded corner sliding groove (6).

7. The module test fixture with precise multi-segment spacing according to claim 1, characterized in that: The fixing assembly comprises a product tray (16), the back of the product tray (16) is detachably connected to the front of the fixing frame (15), a fixing cover (17) is hinged on the right side of the product tray (16), a clamping block (18) is fixedly connected to the left side of the fixing cover (17), a fixing column (19) is fixedly connected inside the product tray (16), the outer periphery of the fixing column (19) is elastically connected to a rotating circular sleeve (21) through a spiral spring (20), and a buckle (22) is fixedly connected to the front of the rotating circular sleeve (21), and the inner side of the buckle (22) is clamped with the outer side of the clamping block (18).

8. The module test fixture with precise multi-segment spacing according to claim 7, characterized in that: One end of the spiral spring (20) is fixedly connected to the outer periphery of the fixed column (19), and the other end of the spiral spring (20) is fixedly connected to the inside of the rotating sleeve (21). The outer periphery of the rotating sleeve (21) is rotatably connected to the inside of the product tray (16).

Images