JPH09127176A - Printed board inspection jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need of manufacturing an inspection jig for each printed board, and to reduce the time and cost for developing a printed board inspection jig. SOLUTION: As the printed board inspection jig, a general inspection jig is manufactured by installing a switching circuit 108 in a wiring for connecting a base 107 where inspection needles actually erected on a printed board are previously disposed like a grid to a signal input/output terminal 109 for giving an electric signal to the inspection needles disposed on the grid. According to a control signal given to the circuit 108, printed board design data 102 produced by a printed board design CAD 101 is input to generate correspondence information 104 by an inspection position-to-an inspection needle correspondence generating part 103, and the information 104 and the design data 102 are inputted to extract the electric connecting relation of the inspection needles by a connecting relation generating part 105.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board inspection jig, and more particularly to an electrical inspection jig for a printed circuit board of high-mix low-volume production.

[0002]

2. Description of the Related Art A conventional printed circuit board inspection jig digitizes the position at which the inspection needle is placed on the actual printed circuit board, or takes out the inspection needle stand position from the design data of the printed circuit board design CAD to obtain one type of printed circuit board. An inspection jig was created for each.

[0003]

In the above-mentioned conventional printed circuit board inspection jig, it takes time from the start of the inspection jig design to the completion of the inspection jig, and the inspection jig is prepared for each board type. Therefore, there is a problem that the cost for producing the inspection jig also increases.

[0004]

A printed circuit board inspection jig of the present invention comprises a board (107) having inspection needles arranged on a grid and an electric signal of the inspection needles for inspecting the electrical connection of the printed circuit board. Signal input / output terminal (1
09), a general-purpose inspection jig configured by a switching circuit (108) connecting the inspection needle and the signal input / output terminal, and the printed circuit board design data (102) output by the printed circuit board design CAD (101) are input. The inspection target position on the printed circuit board, the inspection position and inspection needle correspondence generation unit (103) for detecting the correspondence between the inspection needle of the inspection jig, the printed circuit board design data (102), the inspection position and the inspection needle A connection relation generating unit (105) that extracts the electrical connection relation of the test needle by using the correspondence information (104) generated by the correspondence generating unit (103) as input, and information generated by the connection relation generating unit (105). Based on the switching circuit (10
8) The control signal generating section (106) for generating the control signal of 8) is provided.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a printed circuit board inspection jig according to the present invention, FIG. 2 is a structural diagram of the printed circuit board inspection jig substrate, and FIG. 3 is a printed circuit board inspection jig shown in FIG. And FIG. 4 is a structural diagram illustrating the switching circuit in FIG. 1.

As a printed circuit board inspection jig, a board 107 in which inspection needles actually placed on the printed circuit board are arranged in advance on a grid, and a signal input / output terminal 109 for giving an electric signal to the inspection needles arranged on the grid. A general-purpose inspection jig in which the switching circuit 108 is installed is formed between the wirings connecting the two.

On the other hand, the control signal given to the switching circuit 108 receives the printed circuit board design data 102 created by the printed circuit board design CAD 101 as input and generates the correspondence information 104 in the inspection position / inspection needle correspondence generation unit 103, and the correspondence information 104. With the printed circuit board design data 102 as input, the connection relation generation unit 105 extracts the electrical connection relation of the inspection needle. The control signal generation unit 106 generates a control signal for the switching circuit 108 based on the information generated by the connection relation generation unit 105.

The general-purpose inspection jig will be described in more detail. Referring to FIG. 2, the inspection needles are installed on the intersections of the evenly spaced grids of the horizontal axes A to S and the vertical axes 1 to 14.

Referring to FIG. 3, the electrical signal VCC can be used to conduct a continuity test between the wiring patterns on the board by using the test needles at the positions E4 and K4 on the board.

Similarly, GND has E3 and N10 inspection needles, SIG1 has E5 and K5 inspection needles, and SIG.2 has E inspection needles.
The continuity test can be performed by using the inspection needles of 6 and K6 and the inspection needles of E7 and N4 for OUT.

Next, the switching circuit 108 will be described. Referring to FIG. 4, the switching circuit 108 is
Wires are spread over the grid, and switches such as relays and transistors that can be electrically controlled from the outside are placed at the intersections of the wires. The switch is normally open and the vertical and horizontal wires are not connected.

The connection between the inspection needle A1 and the signal input / output terminal 01 can be realized by giving a control signal to the switches SW1 and SW2 to change the switches to the connected state. Further, it is possible to realize connection between an arbitrary inspection needle and an arbitrary signal input / output terminal by a combination of control signals given to each switch.

[0014]

As described above, according to the present invention,
Since it is not necessary to create an inspection jig for each printed circuit board, it is possible to reduce the time and cost for developing the printed circuit board inspection jig.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of commands and states of commands of the interactive software system shown in FIG.

3 is a diagram showing an example of creating an action definition file in the interactive software system of FIG.

[Explanation of symbols] 101 printed circuit board design CAD 102 printed circuit board design data 103 inspection position and inspection needle correspondence generation unit 104 correspondence information 105 connection relation generation unit 106 control signal generation unit 107 board in which inspection needles are arranged in a grid 108 switching Circuit 109 Signal input / output terminal

Claims (1)

[Claims] 1. A substrate (107) having inspection needles arranged on a grid for inspecting electrical connection of a printed circuit board, and a signal input / output terminal (109) for taking out an electric signal of the inspection needle to the outside. , A general-purpose inspection jig constituted by a switching circuit (108) connecting the inspection needle and the signal input / output terminal,
The printed circuit board design data (102) output by the printed circuit board design CAD (101) is input, and the inspection position and inspection needle correspondence generation unit that detects the correspondence between the inspection target position on the printed circuit board and the inspection needle of the inspection jig. (103), the printed circuit board design data (102), the correspondence information (104) generated by the correspondence generation unit (103) for the inspection position and the inspection needle.
And a connection relation generating unit (105) for extracting the electric connection relation of the inspection needle by inputting
A control signal generator (10) for generating a control signal for the switching circuit (108) based on the information generated in 5).
6) A printed circuit board inspection jig comprising: