Circuit mainboard testing device

Abstract

The utility model discloses a circuit mainboard testing device, comprising a testing box, the upper end of which is provided with a plurality of testing pins; the test pins correspond to the middle of the positioning assembly, the positioning assembly comprises a corner limiting module and an alignment supporting plate, the alignment supporting plate is located above the multiple pins, and a plurality of through holes corresponding to the test pins are formed in the alignment supporting plate; when a plurality of corners of the circuit mainboard are respectively attached to and matched with the corresponding corner limiting modules, and the bottom surface of the circuit mainboard is attached to and matched with the alignment supporting plate, a plurality of plug-in elements to be tested on the circuit mainboard are respectively corresponding to the plurality of through holes; the alignment supporting plate is elastically connected to the upper end face of the test box, and a pressure applying module is arranged above the alignment supporting plate and used for pushing the circuit mainboard to enable the test contact pins to penetrate through the through holes to be matched with the to-be-tested plug-in elements in a plug-in mode. According to the utility model, through rapid positioning, rapid plugging test and rapid separation, the circuit mainboard test steps are simplified, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board testing equipment, in particular to a circuit main board testing device. Background Technique

[0002] The testing equipment for circuit main boards is widely used and is also involved in the testing of printer circuit main boards. Due to the diversity of testing items, the number of interfaces required for testing is relatively large. During conventional testing, all test wires need to be inserted into the testing interfaces of the circuit main board one by one, and they also need to be pulled out one by one after the testing is completed. The process of connecting the testing equipment is rather cumbersome, seriously affecting the testing efficiency. Summary of the Invention

[0003] Object of the Invention: In order to overcome the deficiencies existing in the prior art, the utility model provides a circuit main board testing device, which simplifies the testing steps of the circuit main board and improves the testing efficiency through rapid positioning, rapid plugging-in testing, and rapid separation.

[0004] Technical Solution: To achieve the above object, a circuit main board testing device of the utility model includes a testing box. A plurality of testing pins are arranged on the upper end of the testing box, and the end of the testing pin outside the box is vertically arranged. The testing pins correspond to the middle of a positioning component, and the positioning component includes a corner limiting module and a positioning support plate. The positioning support plate is located above the plurality of pins, and a plurality of through holes corresponding to the testing pins are arranged thereon. When the multiple corners of the circuit main board are respectively abutted and cooperated with the corresponding corner limiting modules, and its bottom surface is abutted and cooperated with the positioning support plate, the multiple elements to be tested and plugged on the circuit main board respectively correspond to the multiple through holes. The positioning support plate is elastically connected to the upper end surface of the testing box, and a pressing module is arranged above the positioning support plate. The pressing module presses the circuit main board on the upper end surface of the positioning support plate and pushes the circuit main board and the positioning support plate to move downward synchronously, so that the testing pins pass through the through holes and are plugged and cooperated with the elements to be tested and plugged.

[0005] Further, a testing board is arranged on the upper end of the testing box. The testing board is used for fixedly arranging the testing pins, and the end of the testing pin inside the box is electrically connected to the testing equipment inside the box. The testing board is detachably and snap-fittedly connected to the upper end housing of the testing box.

[0006] Further, a limiting pin group including two limiting pins is arranged on the corner limiting module corresponding to each corner of the circuit main board. The two limiting pins are vertically and fixedly arranged on the upper end surface of the testing box, and the two limiting pins are respectively abutted against the two side edges of the corresponding corner of the circuit main board.

[0007] Further, a plurality of positioning pins are provided on the upper end surface of the alignment support plate. The positioning pins are correspondingly inserted and matched with the positioning holes on the circuit main board. The lower end of the positioning pin passes through the alignment support plate and is matched with the jack on the upper shell wall of the test box. The bottom end surface of the positioning pin is connected to the lower end surface of the jack through an elastic member. A limiting step surface is provided at the lower end of the jack. When the elastic member is at its original length, the top end of the positioning pin is lower than the top end of the limiting pin.

[0008] Further, when the elastic member is at its original length, the upper end of the test probe is located within the through hole.

[0009] Further, the pressing module is provided with a plurality of pressing rods. A plurality of the pressing rods are arranged corresponding to the edge of the circuit main board, and another plurality of the pressing rods are arranged corresponding to the positions of the plurality of components to be tested and plugged.

[0010] Beneficial effects: For a circuit main board testing device of the present utility model, each test plug of the testing device is connected to the test interface of the circuit main board through a probe, and the pressing structure presses down to enable synchronous connection at multiple joint positions, effectively shortening the connection time between the circuit main board and the testing device, realizing fast plugging and testing, and improving the testing efficiency. The positioning component enables the quick correspondence between each test interface of the circuit main board and a plurality of probes, realizing quick positioning. After the test, the alignment support plate connected elastically lifts the circuit main board to separate it from the plurality of probes, realizing quick separation and further improving the testing efficiency. Description of the Drawings

[0011] Figure 1 It is a schematic side view of the overall structure of an embodiment of the present utility model;

[0012] Figure 2 It is a schematic top view structure of the positioning component of an embodiment of the present utility model. Detailed Embodiments

[0013] The present utility model will be further described below with reference to the drawings.

[0014] As shown in the atta Figure 1-2A circuit board testing device described above includes a testing box 1. A number of testing pins 3 are arranged at the upper end of the testing box 1, and the ends of the testing pins 3 outside the box are arranged vertically. The testing pins 3 correspond to the middle of a positioning component, and the positioning component includes a corner limiting module 5 and a positioning support plate 6. The positioning support plate 6 is located above the plurality of pins 3, and a number of through holes corresponding to the testing pins 3 are provided thereon. When the multiple corners of the circuit board 7 are respectively in abutting cooperation with the corresponding corner limiting modules 5, and its bottom surface is in abutting cooperation with the positioning support plate 6, the multiple to-be-tested plug-in components 71 on the circuit board 7 respectively correspond to the multiple through holes. The positioning support plate 6 is elastically connected to the upper end surface of the testing box 1, and a pressing module 8 is arranged above the positioning support plate 6. The pressing module 8 presses the circuit board 7 on the upper end surface of the positioning support plate 6 and pushes the circuit board 7 and the positioning support plate 6 to move downward synchronously, so that the testing pins 3 pass through the through holes and are in plug-in cooperation with the to-be-tested plug-in components 71. Among them, the pressing module is controlled to move up and down by a lifting drive device 9, so as to approach or move away from the positioned circuit board below. The lifting drive device 9 is manually or power-driven, and the lifting drive device 9 is fixedly connected to the upper end surface of the testing box 1 through a vertical frame structure 10.

[0015] In this solution, the corner limiting module simultaneously limits the multiple corners of the circuit board, thereby determining the alignment of the vertical relative position between the circuit board and the positioning support plate. Then, the circuit board is lowered to be in abutting contact with the positioning support plate, so that the interface positions of the plug-in components to be tested on the circuit board correspond to and are in abutting contact with the through holes on the positioning support plate, realizing the quick positioning and installation of the circuit board. Subsequently, the lifting drive device 9 drives the pressing module to move downward close to the circuit board. Through pressing, the circuit board and the positioning support plate move downward synchronously, so that the ends of the testing pins pass through the corresponding through holes and are connected to the interfaces of the corresponding to-be-tested plug-in components 71, thereby realizing the connection between the circuit board and the testing device and achieving the purpose of testing the circuit board, realizing quick plug-in testing. After removing the pressure of the pressing module, the positioning support plate will be lifted under the action of the elastic restoring force, thereby lifting the circuit board upward and separating the testing pins from the circuit board, realizing quick separation. Therefore, overall, the testing steps are simplified and the testing efficiency of the circuit board is improved.

[0016] A test board 2 is provided at the upper end of the test box 1. The test board 2 is used to fixedly arrange the test pins 3. One end of the test pins 3 inside the box is electrically connected to the test equipment 4 inside the box. The test board 2 is detachably and snap-connected to the upper-end housing of the test box 1. Preferably, a partial area of the upper end surface of the test box is set as a flip structure, which is hinged to the box body of the test box through a hinge connector. The test box is used to place the test equipment and hide and protect the wiring. By opening the flip structure, it is convenient to maintain and repair the internal test equipment and wiring. Among them, the point position assembly and the test board are both arranged on this flip structure. The corner limit module is fixedly arranged on the upper end surface of the flip structure, and the alignment support plate is elastically connected to the upper end surface of the flip structure. A through groove bayonet with a fixed size is arranged at the center position of the flip cover for snap-fitting and installing the test board. Then, according to different circuit boards to be tested, different test boards can be freely replaced. Just open the flip structure, remove the wiring between the inner side of the original test board and the test equipment, disassemble and replace the required test board, and reconnect the test board wiring, which can meet the batch testing of various types of circuit motherboards and greatly improve the test efficiency.

[0017] The corner limit module 5 is provided with a limit pin group corresponding to each corner of the circuit motherboard 7, including two limit pins 51. The two limit pins 51 are vertically and fixedly arranged on the upper end surface of the test box 1. The two limit pins 51 are respectively abutted against the two side edges of the corresponding corner of the circuit motherboard 7. Among them, the limit pin group also plays a role in limiting the corners of the alignment support plate, so as to realize the guiding and auxiliary limiting functions of the lifting of the alignment support plate, ensure stable lifting, ensure that the test pins are correctly connected to the corresponding test interfaces, and avoid misalignment and damage to the test pins and the circuit motherboard.

[0018] The upper end surface of the alignment support plate 6 is provided with a plurality of positioning pins 61. The positioning pins 61 are inserted and matched with the positioning holes on the circuit motherboard 7. The lower end of the positioning pin 61 passes through the alignment support plate 6 and is matched with the jack on the upper-end shell wall of the test box 1. The bottom end surface of the positioning pin 61 is connected to the lower end surface of the jack through an elastic member. A limiting step surface is arranged at the lower end of the jack; when the elastic member is at its original length, the top end of the positioning pin 61 is lower than the top end of the limit pin 51. Among them, the positioning pins are used to further lock the relative position of the circuit motherboard to the alignment support plate, so as to ensure the one-to-one correspondence between the components to be tested and inserted and the through holes. And first, the corner of the circuit motherboard is limited by the limit pin group, and then the positioning pins are inserted and matched with the positioning holes on the circuit motherboard, which can make the cooperation between the positioning pins and the circuit motherboard easier and improve the positioning speed.

[0019] When the elastic member is at its original length, the upper end of the test pin 3 is located within the through hole. This can ensure that when the test pin is not in contact with the circuit main board, it is always inside the through hole, effectively protecting the pin from deflection due to external forces and extending the service life of the device.

[0020] The pressing module 8 is provided with a plurality of pressing rods 81. A plurality of the pressing rods 81 are arranged corresponding to the edge of the circuit main board 7, and another plurality of the pressing rods 81 are arranged corresponding to the positions of the plurality of to-be-tested plug-in components 71. First, the pressing rods are evenly arranged on the edge of the circuit main board, which can ensure that a uniform pressure is applied to the circuit main board, guarantee the stable vertical lifting of the circuit main board on the alignment support plate, and then through the pressing rods corresponding to each to-be-tested plug-in component, after full contact, the to-be-tested plug-in component and the test pin are pressed tightly to ensure good contact and guarantee the effectiveness and reliability of the test. Among them, the pressing rod corresponding to the to-be-tested plug-in component 71 is threadedly connected to the mounting plate of the pressing rod, which can realize the adjustment of the length of the pressing rod, while the pressing rod corresponding to the edge of the circuit main board is fixedly arranged to play a limiting role. When the edge pressing rod is pressed tightly against the circuit main board, the middle pressing rod can be rotated to adjust the pressing force on the position of the to-be-tested plug-in component. While ensuring good contact, it can avoid damage to the circuit main board and the test pin caused by overpressure.

[0021] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A circuit board testing device, characterized in that: It includes a test box (1), and several test pins (3) are arranged at the upper end of the test box (1). The end of the test pin (3) outside the box is arranged vertically. The test pins (3) correspond to the middle part of the positioning component, and the positioning component includes a corner limiting module (5) and a positioning support plate (6). The positioning support plate (6) is located above the multiple pins (3), and several through holes corresponding to the test pins (3) are arranged thereon. When the multiple corners of the circuit board (7) are respectively abutted and cooperated with the corresponding corner limiting module (5), and its bottom surface is abutted and cooperated with the positioning support plate (6), the multiple to-be-tested plug-in components (71) on the circuit board (7) respectively correspond to the multiple through holes. The positioning support plate (6) is elastically connected to the upper end surface of the test box (1), and a pressing module (8) is arranged above the positioning support plate (6). The pressing module (8) presses the circuit board (7) on the upper end surface of the positioning support plate (6) and pushes the circuit board (7) and the positioning support plate (6) to move downward synchronously, so that the test pins (3) pass through the through holes and are plugged and cooperated with the to-be-tested plug-in components (71).

2. The circuit board testing device according to claim 1, wherein: A test board (2) is arranged at the upper end of the test box (1). The test board (2) is used for fixedly arranging the test pins (3). The end of the test pin (3) inside the box is electrically connected to the test equipment (4) inside the box. The test board (2) is detachably clamped and connected to the upper end housing of the test box (1).

3. The circuit board testing device according to claim 2, wherein: The corner limiting module (5) is provided with a limiting pin group corresponding to each corner of the circuit board (7), including two limiting pins (51). The two limiting pins (51) are vertically fixed on the upper end surface of the test box (1), and the two limiting pins (51) are respectively abutted against the two side edges of the corresponding corner of the circuit board (7).

4. The circuit board testing device according to claim 3, characterized in that: A plurality of positioning pins (61) are arranged on the upper end surface of the positioning support plate (6). The positioning pins (61) are inserted and cooperated with the positioning holes on the circuit board (7). The lower end of the positioning pin (61) passes through the positioning support plate (6) and is cooperated with the jack on the upper end housing wall of the test box (1). The bottom end surface of the positioning pin (61) is connected to the lower end surface of the jack through an elastic member, and a limiting step surface is arranged at the lower end of the jack. When the elastic member is at its original length, the top end of the positioning pin (61) is lower than the top end of the limiting pin (51).

5. A circuit board testing device according to claim 4, characterized in that: When the elastic member is at its original length, the upper end of the test pin (3) is located inside the through hole.

6. The circuit board testing device according to claim 5, characterized in that: The pressing module (8) is provided with several pressing rods (81). The multiple pressing rods (81) are arranged corresponding to the edge of the circuit board (7), and several other pressing rods (81) are arranged corresponding to the positions of the multiple to-be-tested plug-in components (71).

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