CN212321672U

CN212321672U - Circuit board testing device

Info

Publication number: CN212321672U
Application number: CN202020540844.6U
Authority: CN
Inventors: 袁令松; 李春岩
Original assignee: Lingdu Electronic Technology Gu'an Co ltd
Current assignee: Lingdu Electronic Technology Gu'an Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-01-08
Anticipated expiration: 2030-04-14

Abstract

The utility model belongs to the technical field of test fixture, especially, relate to a circuit board testing arrangement, the test signal of adapter output passes through the test contact pin and exports in the receiver, the utility model provides a prior art exist lack one kind be suitable for and the not high and few automatic check out test set's of component of economic density problem, have under basic test structure economic suitable for, the commonality good, be convenient for design specific detection, low cost's beneficial technological effect.

Description

Circuit board testing device

Technical Field

The utility model belongs to the technical field of test fixture, especially, relate to a circuit board testing arrangement.

Background

The circuit board testing device is an on-line detection and testing device, is a standard testing device for testing the electrical property and electrical connection of on-line elements or bare boards on a circuit board to check the defects of production and manufacture and the defects of the elements, is mainly used for checking the on-line single elements and the open and closed circuit conditions of each circuit network, has the characteristics of simple operation, rapidness, accuracy in fault location and the like, can simulate the tests of the functions of the elements and the logic functions of digital elements, has high fault coverage rate, needs to manufacture a special needle bed for each single board, and has the problem that the prior art lacks an automatic detection device which is applicable, economical, low in density and small in element number.

SUMMERY OF THE UTILITY MODEL

The utility model provides a circuit board testing arrangement to it lacks the not high and few automatic check out test set's of component of density that is suitable for and economy problem to have proposed prior art existence in solving above-mentioned background art.

The utility model provides a technical problem adopt following technical scheme to realize: a circuit board testing device comprises a needle bed, wherein a universal grid plate is arranged in a bed groove on the surface of the needle bed, contact pin drilling holes are regularly arranged on the surface of the universal grid plate, test contact pins are arranged in the contact pin drilling holes, the test contact pins of the universal grid plate are matched with test pads on a circuit board, an electric connector of the circuit board is electrically connected to an adapter inside the needle bed, test signals output by the adapter are output to a receiver through the test contact pins, one end of each test contact pin is in contact with the test pads on the circuit board, and the other end of each test contact pin is electrically connected to the receiver through a wire.

Further, pins are drilled on the surface of the universal grid plate in a longitudinally and transversely arranged mode.

Further, the universal grid plate is drilled with pins in rows and columns with center spacing of 100, 75 and 50 mil.

Furthermore, a polyester film is arranged between the universal grid plate and the circuit board.

The beneficial technical effects are as follows:

1. the utility model adopts the bed groove on the surface of the needle bed to embed the universal grid plate, the surface of the universal grid plate is regularly provided with contact pin drill holes, test contact pins are arranged in the contact pin drill holes, the test contact pins of the universal grid plate are matched with test pads on a circuit board, an electric connector of the circuit board is electrically connected with an adapter in the needle bed, test signals output by the adapter are output to a receiver through the test contact pins, one end of each test contact pin is contacted with the test pads on the circuit board, the other end of each test contact pin is electrically connected with the receiver through a wire-wound connector, because the basic universal grid is composed of a drilled plate, the center distance of the contact pins on the surface is regularly arranged, the contact pins are used for direct mechanical connection through the electric connector on the circuit board, if the pads on the circuit board are matched with the test grid, a polyester film, the continuous detection is realized by accessing the end points of the network, a probe with a spring is connected to each test point on the circuit board, when the contact of each test point is good, the probes are arranged together to form a needle bed, the test points and a detection process diagram can be controlled under the control of detection software, a detector can obtain the information of all the test points, the whole test process is completed only by installing the test probes on the test points needing to be tested, and each network on the circuit board is subjected to the continuous test, so that the independent test is completed.

2. This patent adopts general grid plate surface divides row contact pin drilling vertically and horizontally, general grid plate divides row contact pin drilling vertically and horizontally according to interaxial spacing 100, 75, 50mil because basic general grid comprises the board of a drilling, and the contact pin on its surface is arranged according to interaxial spacing 100, 75, 50mil vertically and horizontally law, and such contact pin is arranged and is had the commonality more.

3. This patent adopts general grid plate sets up the polyester film with the circuit board between, if pad and the test grid on the circuit board match, the polyester film who punches according to the standard just places between grid and circuit board to design specific detection.

4. This patent simple structure, maintenance convenience, and low cost.

Drawings

Fig. 1 is a schematic structural diagram of the circuit board testing device of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

in the figure: 1-needle bed, 2-bed groove, 3-grid plate, 4-pin drilling, 5-test pin, 6-circuit board, 7-electric connector, 8-adapter, 9-receiver and 10-polyester film.

Example (b):

in this embodiment: as shown in fig. 1, a circuit board testing device includes a needle bed 1, a universal grid plate 3 is disposed in a bed groove 2 on the surface of the needle bed 1, pin bores 4 are regularly arranged on the surface of the universal grid plate 3, test pins 5 are disposed in the pin bores 4, the test pins 5 of the universal grid plate 3 are matched with test pads on a circuit board 6, an electrical connector 7 of the circuit board 6 is electrically connected to an adapter 8 inside the needle bed 1, test signals output by the adapter 8 are output to a receiver 9 through the test pins 5, one end of the test pins 5 contacts the test pads on the circuit board 6, and the other end of the test pins 5 is electrically connected to the receiver 9 through a wire-wound connector.

And pin drilling holes 4 are arranged on the surface of the universal grid plate 3 in a longitudinal and transverse mode.

The universal grid plate 3 is pin drilled 4 in rows and columns with center spacing of 100, 75 and 50 mil.

A polyester film 10 is arranged between the universal grid plate 3 and the circuit board 6.

The working principle is as follows:

the utility model is characterized in that a universal grid plate is arranged in a bed groove on the surface of a needle bed, contact pin drill holes are regularly arranged on the surface of the universal grid plate, test contact pins are arranged in the contact pin drill holes, the test contact pins of the universal grid plate are matched with a test pad on a circuit board, an electric connector of the circuit board is electrically connected with an adapter in the needle bed, a test signal output by the adapter is output to a receiver through the test contact pins, one end of each test contact pin is contacted with the test pad on the circuit board, the other end of each test contact pin is electrically connected with the receiver through a wire-wound connector, the basic universal grid is composed of a board with holes, the center distance of the contact pins on the surface is regularly arranged, the contact pins are used for direct mechanical connection through the electric connector on the circuit board, if the pad on the circuit board is matched with the, continuous testing is achieved by accessing the end points of the network, connecting a probe with a spring to each test point on the circuit board, and when each test point is well contacted, arranging such probes together to form a needle bed, under the control of the detection software, the detection points and the detection process diagram can be detected, a detector can obtain the information of all the test points of the commodity value, and actually, the whole test process is completed only by installing test probes on the test points to be tested, each network on the circuit board is subjected to continuity test, therefore, an independent detection has just been accomplished, the utility model provides a prior art exist lack one kind be suitable for and the economic density is not high and the less automatic check out test set's of component problem, have under basic test structure economic suitable for, the commonality good, be convenient for design specific detection, low cost's beneficial technological effect.

Utilize the technical scheme of the utility model, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. A circuit board testing device is characterized by comprising a needle bed, wherein a universal grid plate is arranged in a bed groove on the surface of the needle bed, contact pin drilling holes are regularly arranged on the surface of the universal grid plate, testing contact pins are arranged in the contact pin drilling holes, the testing contact pins of the universal grid plate are matched with testing pads on a circuit board, an electric connector of the circuit board is electrically connected to an adapter inside the needle bed, testing signals output by the adapter are output to a receiver through the testing contact pins, one end of each testing contact pin is in contact with the testing pads on the circuit board, and the other end of each testing contact pin is electrically connected to the receiver through a wire-.

2. The apparatus of claim 1, wherein the universal grid plate surface is pin drilled in rows and columns.

3. The apparatus of claim 2, wherein the universal grid plate is drilled with pins spaced in rows and columns at 100, 75, 50mil centers.

4. The apparatus of claim 1, wherein a mylar film is disposed between the universal grid plate and the circuit board.