Circuit board test tool

Abstract

The utility model discloses a circuit board testing tool, and relates to the technical field of circuit board testing. The two fixing plates are located at the top end of a base, a plurality of probes are fixedly arranged at the bottom end of the probe plate, a power source is arranged on one side of one fixing plate and fixed to the corresponding position of the top end of the base, a limiting rod is fixedly arranged on one side of the top end of the base, a sliding rod is clamped in the limiting rod in a sliding mode, and a limiting groove is formed in the middle of the top end of the sliding rod. Limiting holes are evenly formed in the two sides of the limiting groove, a first screw rod is slidably arranged in the limiting groove, and a connecting frame is fixedly arranged at the bottom end of the first screw rod. According to the circuit board testing tool, the sliding rod provided with the limiting groove and the limiting hole is arranged, the probe plate is replaced in cooperation with the first screw rod, the fastening nut, the connecting frame and the threaded groove, and meanwhile the probe plate and the circuit board are limited and guided in cooperation with the fixing plate and the positioning plate, so that the circuit board testing tool can complete testing of circuit boards of different sizes.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board testing, in particular to a circuit board testing tool. Background Art

[0002] A PCB test fixture is a device used in PCB testing, such as a bed of nails test fixture, which is mounted on a specific board using a series of fine probes (needles) that correspond to the test points on the board being tested. When the board is placed on the bed of nails, the probes contact the test points on the board, and the test signals are transmitted through the probes to detect whether the circuit is normal:

[0003] A circuit board testing tool with the existing Chinese patent announcement number CN220040512U: "It includes a workbench and a support leg fixedly connected to the bottom of the workbench, the workbench is fixedly connected with a connecting frame, a first telescopic rod is fixedly connected to the center of the bottom of the inner cavity of the connecting frame, and a plurality of test pins are arranged below the first telescopic rod, a slide groove is provided on the workbench, a screw rod is arranged in the inner cavity of the slide groove, two sliders are slidably connected to the screw rod, and the two sliders are fixedly connected to a fixing rod, and the opposite ends of the two fixing rods are fixedly connected to a second connecting plate, and the two second connecting plates are fixedly connected to a reset spring, and one end of the two reset springs is fixedly connected to a clamping plate, and the workbench is fixedly connected to a second fixing plate, and a slanted plate is fixedly connected to the side wall of the workbench away from the second fixing plate, and a second telescopic rod is fixedly connected to the center of the wall of the second fixing plate close to the slanted plate, and one end of the second telescopic rod is fixedly connected to a push block";

[0004] It is envisioned that the testing of circuit boards of different sizes can be completed by fixing circuit boards of different sizes. However, circuit boards of different sizes are usually of different models, so the positions of test points on the circuit boards are also different, which results in the position of the probe needing to change with the position of the test points on the circuit board. Therefore, simply by fixing circuit boards of different sizes, it is impossible to complete the testing of circuit boards of different sizes.

[0005] Therefore, the existing circuit board testing tooling cannot meet the needs of actual use, so the market is in urgent need of improved technology to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a circuit board testing tool, which solves the problem of fixing circuit boards of different sizes to complete the testing of circuit boards of different sizes, but circuit boards of different sizes usually have different models, so the positions of test points on the circuit boards are also different, which causes the position of the probe to change with the position of the test point on the circuit board. Therefore, the problem of being unable to complete the testing of circuit boards of different sizes by simply fixing circuit boards of different sizes is solved.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a circuit board testing tool, comprising two fixed plates located at the top of a base and a probe board with a plurality of probes fixed at the bottom, a power source is arranged on one side of the fixed plate, and the power source is fixed at a corresponding position on the top of the base, a limiting rod is fixed on one side of the top of the base, and a sliding rod is slidably engaged inside the limiting rod, a limiting groove is arranged in the middle of the top of the sliding rod, and limiting holes are evenly arranged on both sides of the limiting groove, a first screw rod slides inside the limiting groove, and a connecting frame is fixed at the bottom end of the first screw rod, the connecting frame slides under the sliding rod through the limiting hole, and a threaded groove is arranged in the middle of the bottom end of the connecting frame, a second screw rod is fixed on the middle of the top of the probe board, and the second screw is screwed into the threaded groove.

[0009] Furthermore, a rubber pad is fixedly provided in the middle of the top of the base, the bottom end of the other fixing plate is fixed at a corresponding position on the top of the rubber pad, a through groove is opened in the middle of one side of the other fixing plate, and a circuit board is placed on the top of the rubber pad.

[0010] Furthermore, the power source is a hydraulic lifting device, a rotating motor is fixedly provided on the other side of the top of the base, and a screw rod is fixedly provided on the output end of the rotating motor.

[0011] Furthermore, a positioning plate is fixedly provided at one end of the bottom of the sliding rod, and the positioning plate slides inside the through slot.

[0012] Furthermore, a fastening nut is screwed onto the outer cylindrical surface of the first screw.

[0013] Furthermore, a cable is fixedly disposed on the top of the probe card, and the cable is electrically connected to the testing equipment.

[0014] Furthermore, the screw rod is screwed into the other end of the sliding rod, and a soft cushion is provided on adjacent sides of the two fixing plates.

[0015] The utility model has the following beneficial effects:

[0016] The utility model provides a sliding rod with a limiting groove and a limiting hole, and cooperates with a first screw rod, a fastening nut, a connecting frame and a threaded groove to replace the probe board, and cooperates with a fixing plate and a positioning plate to limit and guide the probe board and the circuit board, so that the circuit board testing tooling can complete the testing of circuit boards of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the base structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the probe board of the utility model;

[0020] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 101. base; 102. power source; 103. rotating motor; 104. screw rod; 105. rubber pad; 106. fixing plate; 107. through groove; 108. limiting rod; 201. probe plate; 202. probe; 203. slide rod; 204. positioning plate; 205. limiting groove; 206. limiting hole; 207. first screw rod; 208. fastening nut; 209. connecting frame; 210. threaded groove; 220. second screw rod; 230. cable; 300. circuit board. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] See also Figure 1-4As shown, the utility model is a circuit board testing tool, including two fixing plates 106 located at the top of the base 101 and a probe plate 201 with a plurality of probes 202 fixed at the bottom, a power source 102 is arranged on one side of the fixing plate 106, and the power source 102 is fixed at the corresponding position of the top of the base 101, a limiting rod 108 is fixed on one side of the top of the base 101, and a sliding rod 203 is slidably engaged inside the limiting rod 108, a limiting groove 205 is arranged in the middle of the top of the sliding rod 203, and limiting holes 206 are evenly arranged on both sides of the limiting groove 205, a first screw 207 is slidably arranged inside the limiting groove 205, and a connecting frame 209 is fixed at the bottom of the first screw 207, and the connecting frame 2 09 slides under the slide bar 203 through the limiting hole 206, and a thread groove 210 is opened in the middle of the bottom end of the connecting frame 209, and a second screw 220 is fixedly provided in the middle of the top end of the probe board 201, and the second screw 220 is screwed into the thread groove 210. The second screw 220 is disengaged from the thread groove 210 by rotating it, and then the probe board 201 matching the circuit board 300 to be tested is used to drive the second screw 220 to screw into the thread groove 210 to complete the installation, and then the probe board 201 is pushed to fit with the positioning plate 204 (in this process, the first screw 207 and the connecting frame 209 will slide along the limiting groove 205 and the limiting hole 206) and finally tighten the fastening nut 208 to complete the fixation.

[0025] Among them Figure 1-2 As shown, a rubber pad 105 is fixedly provided in the middle of the top of the base 101, and the bottom end of another fixing plate 106 is fixed at the corresponding position of the top of the rubber pad 105. A through groove 107 is opened in the middle of one side of the other fixing plate 106. A circuit board 300 is placed on the top of the rubber pad 105. The power source 102 is a hydraulic lifting device. A rotating motor 103 is fixedly provided on the other side of the top of the base 101, and a screw 104 is fixedly provided at the output end of the rotating motor 103. The rubber pad 105 increases the surface softness of the base 101 to prevent the circuit board 300 from being damaged by force.

[0026] Among them Figure 2-4 As shown, a positioning plate 204 is fixed at one end of the bottom of the slide rod 203, and the positioning plate 204 slides inside the through groove 107, a fastening nut 208 is screwed on the outer cylindrical surface of the first screw rod 207, a cable 230 is fixed at the top of the probe board 201, and the cable 230 is electrically connected to the test equipment, the screw rod 104 is screwed inside the other end of the slide rod 203, and soft pads are provided on the adjacent sides of the two fixed plates 106. The soft pads increase the surface softness of the fixed plates 106, and the fixed plates 106 are placed to clamp the circuit board 300. The positioning plate 204 is convenient for cooperating with the fixed plate 106 to limit the position of the circuit board 300 and the probe board 201, so as to ensure that the test points of the probe 202 and the circuit board 300 are accurately connected.

[0027] Working principle:

[0028] When testing the circuit board 300, firstly, the circuit board 300 is placed on the top of the rubber pad 105 and fits it on the inner wall of a fixing plate 106, and then the power source 102 pushes the other fixing plate 106 to slightly squeeze the circuit board 300, so that the circuit board 300 is fixed, and finally the rotating motor 103 drives the screw rod 104 to rotate, and the rotation of the screw rod 104 causes the sliding rod 203 to move down along the limiting rod 108, and the sliding rod 203 moves downward to drive the probe plate 201 to move downward, so that the probe 202 contacts the test point of the circuit board 300, and transmits the signal to the inside of the probe plate 201, and finally transmits it to the inside of the test equipment through the cable 230 to complete the test;

[0029] When testing circuit boards 300 of different specifications, the corresponding probe board 201 needs to be replaced. When replacing the probe board 201, first rotate the second screw 220 to disengage the thread groove 210, and then use the probe board 201 that matches the circuit board 300 to be tested to drive the second screw 220 to screw into the thread groove 210 to complete the installation, and then push the probe board 201 to fit with the positioning plate 204 (in this process, the first screw 207 and the connecting frame 209 will slide along the limit groove 205 and the limit hole 206), and finally tighten the fastening nut 208 to complete the fixation, and the replaced circuit board 300 can be tested.

[0030] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. Circuit board testing tool, characterized by: The invention comprises two fixing plates (106) located at the top of a base (101) and a probe plate (201) with a plurality of probes (202) fixedly arranged at the bottom, a power source (102) being arranged on one side of the fixing plates (106), and the power source (102) being fixed at a corresponding position of the top of the base (101), a limiting rod (108) being fixedly arranged on one side of the top of the base (101), and a sliding rod (203) being slidably engaged inside the limiting rod (108), a limiting groove (205) being arranged at the middle of the top of the sliding rod (203), and the limiting groove Limiting holes (206) are evenly provided on both sides of (205), a first screw rod (207) slides inside the limiting groove (205), and a connecting frame (209) is fixed at the bottom end of the first screw rod (207), the connecting frame (209) slides under the sliding rod (203) through the limiting hole (206), and a thread groove (210) is provided in the middle of the bottom end of the connecting frame (209), a second screw rod (220) is fixed in the middle of the top end of the probe plate (201), and the second screw rod (220) is screwed into the thread groove (210).

2. The circuit board testing tool according to claim 1, characterized in that: A rubber pad (105) is fixedly arranged in the middle of the top of the base (101); the bottom end of the other fixing plate (106) is fixed to a corresponding position of the top of the rubber pad (105); a through slot (107) is opened in the middle of one side of the other fixing plate (106); and a circuit board (300) is placed on the top of the rubber pad (105).

3. The circuit board testing tool according to claim 1, characterized in that: The power source (102) is a hydraulic lifting device, a rotating motor (103) is fixedly arranged on the other side of the top of the base (101), and a screw rod (104) is fixedly arranged on the output end of the rotating motor (103).

4. The circuit board testing tool according to claim 2, characterized in that: A positioning plate (204) is fixedly provided at one end of the bottom of the sliding rod (203), and the positioning plate (204) slides inside the through groove (107).

5. The circuit board testing tool according to claim 1, characterized in that: A fastening nut (208) is screwed onto the outer cylindrical surface of the first screw rod (207).

6. The circuit board testing tool according to claim 1, characterized in that: A cable (230) is fixedly arranged on the top of the probe card (201), and the cable (230) is electrically connected to the testing equipment.

7. The circuit board testing tool according to claim 3, characterized in that: The screw rod (104) is screwed into the other end of the sliding rod (203), and a soft cushion is provided on adjacent sides of the two fixing plates (106).

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