CN219369807U

CN219369807U - Direct-insert type resistance-removing test fixture

Info

Publication number: CN219369807U
Application number: CN202223218687.5U
Authority: CN
Inventors: 姚鼎; 武翰; 蒋勇; 曾子玥; 袁媛
Original assignee: 716th Research Institute of CSIC
Current assignee: 716th Research Institute of CSIC
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-07-18
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a direct-insert type resistance-removing test fixture, which comprises a transfer table, a connector and a test sub-board, wherein the upper surface of the transfer table is provided with a groove for placing the test sub-board, the periphery of the inside of the groove is provided with a plurality of spring probes connected with the test sub-board, the bottoms of the spring probes are connected to the connector through a wire four-wire system, the heads of the spring probes are connected with copper-coated contact points at the back of the test sub-board, and the connector is connected with test equipment; and the four corners outside the groove are respectively provided with a pressing mechanism, and the pressing mechanisms can provide pressure through springs and rotate, so that the pressing mechanisms are used for fixing the test daughter board. When the test board is used, the test board is placed in the groove, the pressing mechanism is rotated to press four corners of the test board, and connection between the test board and the switching table is achieved. The utility model can realize single measurement of all resistance values of the resistor, and the efficiency is obviously improved during batch test. The structure is simple, the operation is convenient, the applicability is wide, and the corresponding test sub-board only needs to be replaced according to the resistance of the different circuit structure types.

Description

Direct-insert type resistance-removing test fixture

Technical Field

The utility model belongs to the technical field of component testing equipment, and particularly relates to a direct-insert type resistance-removing testing clamp.

Background

At present, the main stream detection mechanism in China mainly tests the resistor-array pins one by one in a digital voltmeter through a pen point test mode, and the traditional manual test mode is simple and convenient, but long in test time, low in efficiency and easy to leak test, cannot meet the requirement of batch test, realizes single measurement of all resistor-array resistance values through designing a resistor-array test fixture and matching with industrial personal computer software, and can effectively solve the problem of batch general test of engineering application.

Disclosure of Invention

The utility model aims to provide the direct-insert type resistance-removing test fixture which is simple in structure, convenient to operate and wide in applicability, so that the requirement of resistance-removing batch universal test is met.

The technical solution for realizing the purpose of the utility model is as follows: the direct-insert type resistance-removing test fixture comprises a transfer table, a connector and a test sub-board, wherein the upper surface of the transfer table is provided with a groove for placing the test sub-board, a plurality of spring probes connected with the test sub-board are arranged around the inside of the groove, the bottoms of the spring probes are connected to the connector through a wire four-wire system, the heads of the spring probes are connected with copper-coated contact points at the back of the test sub-board, and the connector is connected with test equipment; the four corners outside the groove are respectively provided with a pressing mechanism, and the pressing mechanisms can provide pressure through springs and rotate to fix the test daughter board; when the test board is used, the test board is placed in the groove, the pressing mechanism is rotated to press four corners of the test board, and connection between the test board and the switching table is achieved.

Further, four corners in the groove are respectively provided with a positioning column, and the positioning columns are connected with four corner positioning holes of the test sub-board to realize positioning and mounting of the test sub-board.

Further, the test sub-board comprises a universal PCB and a universal IC locking seat arranged on the upper surface of the PCB, the to-be-tested resistor is arranged on the IC locking seat, and N copper-clad contact points are arranged on the back of the PCB.

Further, each type of resistance-removing circuit structure corresponds to a test sub-board, and wiring connection is carried out between the IC locking seat and the copper-clad point on the universal PCB according to the resistance-removing circuit structure form.

Compared with the prior art, the utility model has the remarkable advantages that: 1) The method can realize single measurement of all resistance values of the resistor, solves the problems of long time and low efficiency of manual point measurement, and remarkably improves the efficiency during batch test; 2) Simple structure, convenient operation, extensive applicability, to the row of different circuit structure forms hinder, only need change corresponding test daughter board can.

The utility model is described in further detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of an in-line type resistance-removing test fixture according to an embodiment of the present utility model, wherein fig. 1 (a) is a left side view, fig. 1 (b) is a front side view, fig. 1 (c) is a right side view, fig. 1 (d) is a rear side view, and fig. 1 (e) is a front side view;

fig. 2 is a schematic diagram of a test sub-board structure according to an embodiment of the utility model, in which fig. 2 (a) is a front view and fig. 2 (b) is a back view.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In one embodiment, referring to fig. 1, there is provided an in-line type exclusion test fixture, the fixture includes a transfer table 1, a connector 2 and a test sub-board 5, a groove for placing the test sub-board 5 is provided on the upper surface of the transfer table 1, a plurality of spring probes 4 connected with the test sub-board 5 are provided around the inner part of the groove, the bottoms of the spring probes 4 are connected to the connector 2 through wires in a four-wire system, the heads of the spring probes 4 are connected with copper-clad contact points on the back of the test sub-board 5, and the connector 2 is connected with a test device; and the four corners outside the groove are respectively provided with a pressing mechanism 7, and the pressing mechanism is provided with pressure through a spring and can rotate to fix the test daughter board 5. When the test board testing device is used, the test board 5 is placed in the groove, the pressing mechanism 7 is rotated to press four corners of the test board 5, and connection between the test board 5 and the switching table 1 is achieved.

Further, in one embodiment, four corners in the groove are respectively provided with a positioning column 3, and the positioning columns are connected with four corner positioning holes of the test sub-board 5, so that positioning and mounting of the test sub-board 5 are realized.

Further, in one embodiment, referring to fig. 2, the test sub-board 5 includes a general PCB board and a 40pin general IC locking seat 6 mounted on the upper surface of the PCB board, the to-be-tested resistor is mounted on the IC locking seat 6, and a maximum of 20 pins of resistor test can be realized by setting 20 copper-clad contact points on the back of the PCB board.

Further, in one embodiment, each of the resistor-array circuit structures corresponds to one of the test sub-boards 5, and the IC locking base 6 is connected with the copper-clad point of the general PCB by wiring according to the structure of the resistor-array circuit. Therefore, aiming at the exclusion test of different circuit structure forms, only the corresponding test sub-board needs to be replaced.

Any software program that may be implied by the present utility model is implemented by the prior art without any improvement or protection.

In conclusion, the utility model can realize single measurement of all resistance values of the resistor, solves the problems of long time and low efficiency of manual spot test, and remarkably improves the efficiency during batch test. The structure is simple, the operation is convenient, the applicability is wide, and the corresponding test sub-board only needs to be replaced according to the resistance of the different circuit structure types.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The direct-insert type resistance-removing test fixture is characterized by comprising a transfer table (1), a connector (2) and a test sub-board (5), wherein the upper surface of the transfer table (1) is provided with a groove for placing the test sub-board (5), a plurality of spring probes (4) connected with the test sub-board (5) are arranged around the inside of the groove, the bottoms of the spring probes (4) are connected to the connector (2) through four wires, the heads of the spring probes (4) are connected with copper-clad contact points on the back of the test sub-board (5), and the connector (2) is connected with test equipment; the four corners outside the groove are respectively provided with a pressing mechanism (7), and the pressing mechanisms can provide pressure through springs and rotate to fix the test daughter board (5); when the test board (5) is used, the test board (5) is placed in the groove, the pressing mechanism (7) is rotated to press four corners of the test board (5), and connection between the test board (5) and the switching table (1) is achieved.

2. The direct insert type exclusion test fixture according to claim 1, wherein four corners in the groove are respectively provided with a positioning column (3) which is connected with four corner positioning holes of the test sub-board (5) to realize positioning and installation of the test sub-board (5).

3. The in-line resistance-removing test fixture according to claim 1, wherein the test daughter board (5) comprises a general PCB board and a general IC locking seat (6) mounted on the upper surface of the PCB board, the resistance-removing to be tested is mounted on the IC locking seat (6), and N copper-clad contact points are disposed on the back of the PCB board.

4. A direct insert type resistance removing test fixture according to claim 3, wherein each resistance removing circuit structure corresponds to a test sub-board (5), and wiring connection is performed between the IC locking seat (6) and copper-clad points on the general PCB board according to the resistance removing circuit structure form.

5. An in-line exclusion test fixture according to claim 3, wherein N = 20.