Testing tool for testing switch panel by using CCD (Charge Coupled Device)

Abstract

The utility model discloses a testing tool for testing a switch panel by using a CCD (Charge Coupled Device), which belongs to the technical field of switch panel testing and comprises a testing mechanism and a shading mechanism, the shading mechanism comprises two supports arranged on the surface of the testing mechanism, the top of each support is fixedly connected with an air cylinder, and the air cylinder is fixedly connected with the testing mechanism. And a shading frame is fixedly connected to the bottom end of the air cylinder, a transparent plate is installed on the top of the shading frame in an embedded mode, and a shading sleeve is fixedly connected to the top of the shading frame. According to the mode, the shading frame, the shading sleeve and the fixing frame are matched with one another, so that the surface of the circuit board in detection is surrounded, a dark field environment is provided for the circuit board in detection, interference of external light to the light beads on the circuit board is reduced, and the detection accuracy is improved. Therefore, the test mechanism can identify the working condition of the lamp bead on the circuit board more accurately and quickly, and the accuracy of brightness detection of the lamp bead on the circuit board is ensured.

Description

Technical Field

[0001] This utility model relates to the field of switch panel testing technology, and specifically to a testing fixture for testing switch panels using a CCD. Background Technology

[0002] The window regulator switch panel is an important control component in a car, usually installed on the door trim panel on the driver's side. The circuit board of the window regulator switch panel is a component inside the window regulator, and it is a switch circuit board that can display the position of each switch.

[0003] Most existing car window lift switch panels use CCD testing machines to test the brightness performance of the LEDs on the circuit board to see if they meet the standards.

[0004] The existing circuit boards are placed directly on the testing platform inside the CCD testing machine. The bright light in the workshop can easily shine onto the circuit boards through the CCD testing machine, which can affect the accuracy of the CCD camera in detecting the brightness of the LEDs on the circuit boards.

[0005] Based on this, this utility model designs a test fixture for testing switch panels using a CCD to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a test fixture for testing switch panels using a CCD.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A testing fixture for testing a CCD switch panel includes a testing mechanism and a light-shielding mechanism. The light-shielding mechanism includes two brackets disposed on the surface of the testing mechanism. A cylinder is fixedly connected to the top of the brackets, and a light-shielding frame is fixedly connected to the bottom of the cylinders. A transparent plate is embedded in the top of the light-shielding frame, a cover is fixedly connected to the top of the light-shielding frame, and a fixing frame is fixedly connected to the top of the cover. The surface of the fixing frame is snapped onto the surface of the cylinder.

[0009] Furthermore, the bottom of the transparent plate is fixedly connected to equally arranged sliding cylinders, and the inner wall of the sliding cylinders is slidably connected to rubber rods.

[0010] Furthermore, a spring is fixedly connected to the top end of the rubber rod, and the top end of the spring is fixedly connected to the inner top wall of the slide cylinder.

[0011] Furthermore, the testing mechanism includes a first electric guide rail, a slide rail slidably connected to the surface of the first electric guide rail, a second electric guide rail fixedly connected to the bottom of the slide rail, a slider slidably connected to the surface of the second electric guide rail, and a CCD camera fixedly connected to the bottom of the slider.

[0012] Furthermore, a power supply platform is provided at the bottom of the light-shielding frame.

[0013] Furthermore, the front end of the power supply station is equipped with a barcode scanner and a push-button switch.

[0014] Furthermore, the front end of the power supply platform is provided with a through hole, and a pusher is slidably connected to the inner wall of the through hole.

[0015] Furthermore, a stop block is fixedly connected to the surface of the pusher, and the rear end of the stop block contacts the front end of the power supply platform.

[0016] Furthermore, an elastic frame is slidably connected to the upper end of the inner wall of the light-shielding frame, and the surface of the elastic frame is engaged with the lower end of the inner wall of the cylinder.

[0017] Furthermore, a limiting block is slidably connected to the inner wall of the fixed frame, and the surface of the limiting block is engaged with the inner wall of the cylinder.

[0018] Beneficial effects

[0019] 1. By using the light-shielding frame, cover and fixing frame in combination, the surface of the circuit board under test is protected, providing a dark environment for the circuit board under test, reducing the interference of external light on the lit LEDs on the circuit board, and thus ensuring that the testing agency can more accurately and quickly identify the working status of the LEDs on the circuit board, thereby ensuring the accuracy of the brightness detection of the LEDs on the circuit board.

[0020] 2. The rubber rod and the light-shielding frame work together to limit the circuit board, ensuring that the circuit board is stably positioned on the testing mechanism, thereby ensuring the accuracy of the circuit board testing. The slide cylinder and the spring work together to prevent the rubber rod from pressing too hard on the circuit board, thus ensuring the limiting effect of the circuit board. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a perspective view of the main structure of a test fixture for testing a CCD switch panel according to the present invention.

[0023] Figure 2 This is a perspective view of the testing mechanism and light-shielding mechanism of a testing fixture using a CCD testing switch panel according to the present invention.

[0024] Figure 3 This is a perspective view of the light-shielding mechanism of a test fixture using a CCD test switch panel according to the present invention.

[0025] Figure 4 This is a cross-sectional view of the power supply platform of a test fixture using a CCD test switch panel according to this utility model.

[0026] The labels in the diagram represent:

[0027] 100. Testing mechanism; 101. First electric guide rail; 102. Carriage; 103. Second electric guide rail; 104. Slider; 105. CCD camera; 106. Power supply platform; 107. Barcode scanner; 108. Push button switch; 200. Light-shielding mechanism; 201. Bracket; 202. Cylinder; 203. Light-shielding frame; 204. Transparent plate; 205. Fixing frame; 206. Cover; 207. Sliding cylinder; 208. Rubber rod; 209. Spring; 210. Through hole; 211. Push frame; 212. Stop block; 213. Limiting block; 214. Elastic frame. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] The present invention will be further described below with reference to the embodiments.

[0030] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4A test fixture for testing switch panels using a CCD includes a test mechanism 100 and a light-shielding mechanism 200. The light-shielding mechanism 200 includes two brackets 201 disposed on the surface of the test mechanism 100. A cylinder 202 is fixedly connected to the top of the bracket 201. A light-shielding frame 203 is fixedly connected to the bottom of the cylinder 202. A transparent plate 204 is embedded in the top of the light-shielding frame 203. A cover 206 is fixedly connected to the top of the light-shielding frame 203. A fixing frame 205 is fixedly connected to the top of the cover 206. The surface of the fixing frame 205 is snapped onto the surface of the cylinder 202.

[0031] The surface of the testing unit 100 is provided with a mounting shell, a PLC touch screen is embedded in the front end of the mounting shell, and a three-color light is installed on the top of the mounting shell.

[0032] The transparent panel 204 is a transparent acrylic panel component, and four black acrylic panels are embedded in the surface of the light-shielding frame 203.

[0033] In this embodiment of the utility model, when it is necessary to test the brightness of the LED beads on the circuit board used for the window lift switch panel, the circuit board is placed on the testing mechanism 100, and the cylinder 202 is manually opened. The bottom end of the cylinder 202 moves down, causing the light-shielding frame 203 to move down and abut against the end of the mounting shell. The light-shielding frame 203 moves down and stretches the cover 206, so that the light-shielding frame 203 surrounds the surface of the circuit board. At this time, the testing mechanism 100 powers on the circuit board, causing the LED beads on the circuit board to light up. The testing mechanism 100 compares the brightness and color of the LED beads after they are lit up with the set value through the transparent plate 204 to determine the product performance.

[0034] In this embodiment of the utility model, the light-shielding frame 203, the cover 206 and the fixing frame 205 cooperate to protect the surface of the circuit board under test, provide a dark environment for the circuit board under test, reduce the interference of external light on the lit LED beads on the circuit board, and thus ensure that the testing mechanism 100 can more accurately and quickly identify the working status of the LED beads on the circuit board, thereby ensuring the accuracy of the brightness detection of the LED beads on the circuit board.

[0035] In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, the bottom of the transparent plate 204 is fixedly connected with equally arranged sliding cylinders 207, the inner wall of the sliding cylinders 207 is slidably connected with rubber rods 208, the top end of the rubber rods 208 is fixedly connected with springs 209, the top end of the springs 209 is fixedly connected to the inner top wall of the sliding cylinders 207, the upper end of the inner wall of the light-shielding frame 203 is slidably connected with an elastic frame 214, the surface of the elastic frame 214 is engaged with the lower end of the inner wall of the cylinder 202, and the inner wall of the fixed frame 205 is slidably connected with a limiting block 213, the surface of the limiting block 213 is engaged with the inner wall of the cylinder 202.

[0036] In this embodiment of the utility model, the light-shielding frame 203 moves down, causing the slide cylinder 207 and the rubber rod 208 to move down. The bottom end of the rubber rod 208 abuts against the top of the circuit board. At this time, the light-shielding frame 203 continues to drive the slide cylinder 207 to move down, thereby compressing the spring 209.

[0037] In this embodiment of the utility model, the rubber rod 208 and the light-shielding frame 203 cooperate to limit the circuit board, ensuring that the circuit board is stably positioned on the testing mechanism 100, thereby ensuring the accuracy of the circuit board detection. The slide cylinder 207 and the spring 209 cooperate to prevent the rubber rod 208 from excessively pressuring the circuit board, thereby ensuring the limiting effect on the circuit board. The limiting block 213 and the elastic frame 214 cooperate to facilitate the replacement of the light-shielding frame 203 and the cover 206 on the cylinder 202.

[0038] In some embodiments, such as Figure 1-2 As shown, in a preferred embodiment of the present invention, the testing mechanism 100 includes a first electric guide rail 101, a slide 102 slidably connected to the surface of the first electric guide rail 101, a second electric guide rail 103 fixedly connected to the bottom of the slide 102, a slider 104 slidably connected to the surface of the second electric guide rail 103, a CCD camera 105 fixedly connected to the bottom of the slider 104, a power supply platform 106 at the bottom of the light shield 203, a barcode scanner 107 and a push button switch 108 at the front end of the power supply platform 106, a through hole 210 at the front end of the power supply platform 106, a pusher 211 slidably connected to the inner wall of the through hole 210, a stop block 212 fixedly connected to the surface of the pusher 211, and the rear end of the stop block 212 contacting the front end of the power supply platform 106.

[0039] The bottom of the power supply platform 106 and the surface of the first electric guide rail 101 are both fixedly connected to the inside of the mounting housing.

[0040] It should be noted that both the first electric guide rail 101 and the second electric guide rail 103 are composed of a guide rail body, a drive motor, a slide 102, a slider 104, a transmission device, and a control system.

[0041] Transmission device: responsible for converting the rotational motion of the motor into linear motion. Common transmission methods include screw drive, belt drive, chain drive, etc.

[0042] Control System: The control system is used to control the operation of the motor, achieving precise control of the linear motion of the carriage 102 or the slider 104. It can set parameters such as the movement speed, stroke, and acceleration of the carriage 102 or the slider 104 according to user needs, and monitor the linear position and status of the carriage 102 or the slider 104 in real time through sensors, ensuring the accuracy and safety of the motion. This is a relatively common and well-known technology in this field and is not closely related to the technical problem of this application; therefore, it has not been further described.

[0043] The cover 206, rubber rod 208, spring 209, limiting block 213, elastic frame 214, push frame 211, and stop block 212 are all silicone rubber components. The cover 206, rubber rod 208, spring 209, limiting block 213, elastic frame 214, push frame 211, and stop block 212 all have good flexibility, elasticity, and electrical insulation properties.

[0044] The power supply station 106 is equipped with several probe boards. The probes on the probe boards are gold-plated probes, which have better conductivity and extremely low resistance, which can greatly improve the stability and reliability of the test.

[0045] In this embodiment of the utility model, when it is necessary to test the brightness of the LED beads on the circuit board used for the window lift switch panel, one of the button switches 108 is manually pressed to power the barcode scanner 107. The barcode scanner 107 is used to scan the QR code information on the circuit board, and the product serial number can be entered to save the test results. The QR code scanning information can solve the problem of product test result traceability. The scanned circuit boards are placed on the power supply platform 106. By sending the corresponding values ​​to the PLC touch screen, the linear movement range of the carriage 102 and the slider 104 is precisely controlled and the power supply platform 106 is turned on, thereby causing the CCD camera 105 to move in the XY axis direction. The probe board in the power supply platform 106 powers the circuit board, causing the LED beads on the circuit board to light up. The brightness and color of the LED beads after they are lit are compared with the set value to determine the product performance. The test results are output using the PLC touch screen, which is a faster, simpler and more intuitive way to display the test status.

[0046] In this embodiment of the utility model, the circuit board inside the power supply platform 106 is lifted by the cooperation of the through hole 210 and the push bracket 211, thereby facilitating the removal of the circuit board inside the power supply platform 106.

[0047] It should be noted that the first electric guide rail 101, the slide 102, the second electric guide rail 103, the slider 104, the CCD camera 105, the power supply platform 106, the barcode scanner 107, the push-button switch 108, the cylinder 202, and the PLC touch screen mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the power supply for the first electric guide rail 101, the second electric guide rail 103, the CCD camera 105, the power supply platform 106, the barcode scanner 107, the push-button switch 108, the cylinder 202, and the PLC touch screen can be powered by the built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A test fixture for testing switch panels using a CCD, comprising a test mechanism (100), characterized in that: It also includes a light-shielding mechanism (200), which includes two brackets (201) disposed on the surface of the testing mechanism (100). A cylinder (202) is fixedly connected to the top of the bracket (201), and a light-shielding frame (203) is fixedly connected to the bottom of the cylinder (202). A transparent plate (204) is embedded in the top of the light-shielding frame (203), and a cover (206) is fixedly connected to the top of the light-shielding frame (203). A fixing frame (205) is fixedly connected to the top of the cover (206), and the surface of the fixing frame (205) is snapped onto the surface of the cylinder (202).

2. The test fixture for testing switch panels using a CCD as described in claim 1, characterized in that, The bottom of the transparent plate (204) is fixedly connected with equally arranged sliding cylinders (207), and the inner wall of the sliding cylinders (207) is slidably connected with rubber rods (208).

3. The test fixture for testing switch panels using a CCD according to claim 2, characterized in that, A spring (209) is fixedly connected to the top end of the rubber rod (208), and the top end of the spring (209) is fixedly connected to the inner top wall of the slide cylinder (207).

4. The test fixture for testing switch panels using a CCD as described in claim 1, characterized in that, The testing mechanism (100) includes a first electric guide rail (101), a slide (102) is slidably connected to the surface of the first electric guide rail (101), a second electric guide rail (103) is fixedly connected to the bottom of the slide (102), a slider (104) is slidably connected to the surface of the second electric guide rail (103), and a CCD camera (105) is fixedly connected to the bottom of the slider (104).

5. The test fixture for testing switch panels using a CCD as described in claim 1, characterized in that, The bottom of the light-shielding frame (203) is provided with a power supply platform (106).

6. The test fixture for testing switch panels using a CCD according to claim 5, characterized in that, The front end of the power supply station (106) is equipped with a barcode scanner (107) and a push-button switch (108).

7. The test fixture for testing switch panels using a CCD according to claim 6, characterized in that, The power supply platform (106) has a through hole (210) at its front end, and a pusher (211) is slidably connected to the inner wall of the through hole (210).

8. The test fixture for testing switch panels using a CCD according to claim 7, characterized in that, A stop block (212) is fixedly connected to the surface of the pusher (211), and the rear end of the stop block (212) contacts the front end of the power supply platform (106).

9. The test fixture for testing switch panels using a CCD according to claim 1, characterized in that, An elastic frame (214) is slidably connected to the upper end of the inner wall of the light-shielding frame (203), and the surface of the elastic frame (214) is engaged with the lower end of the inner wall of the cylinder (202).

10. The test fixture for testing switch panels using a CCD according to claim 1, characterized in that, The inner wall of the fixed frame (205) is slidably connected to a limiting block (213), and the surface of the limiting block (213) is engaged with the inner wall of the cylinder (202).

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