JPS63163182A - Printed board test connection device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] An adapter in which a buffer printed board having a group of terminals common to each type is fixed to a board having guide rails and connectors that hold various printed boards of different shapes, and an expandable and retractable board. A contact section is formed by assembling a pair of heads in close proximity to each other, and the contacts of the contact section are pressure-welded to the terminal group of the adapter on which the printed circuit board to be tested is mounted. An automatic test method for printed circuit boards.

[Industrial application field]

The present invention relates to an automatic test method for printed circuit boards that are widely used in the construction of various electronic devices.

In particular, there is a need for a new automatic test method for printed boards using probe contact that can be automated, in the function testing of printed boards that are produced in small quantities in a wide variety of products and have a wide variety of external shapes and different connector shapes.

[Conventional technology]

The automatic test method for printed circuit boards that has been widely used in the past is
As shown in FIG.
A connector 2 is fixed parallel to the main surface of the table 5 at intervals such that both side edges of the direction can be inserted into the guide groove, and is connected by contacting the contacts by inserting the terminal plated portion 1-1 of the printed board 1. , a test in which the printed board 1 is fixed between the guide rails 3 in the insertion direction, that is, in the direction of arrow A, in a U-shape when viewed from above, and the contacts of the connector 2 are connected to the test machine main body (not shown) with a cable 7. using a machine.

Then, the printed circuit board 1, which is electrically connected to the protruding terminal plating part 1-1 to form a power supply and signal pattern, and has various electronic components mounted thereon, is moved to the guide rail by handling by a robot or by a dedicated insertion/extraction mechanism. 3 is slid in the direction of arrow A and inserted into the connector 2, and the output signal of the printed board 1 is tested by supplying power and inputting signals from the testing machine body via the cable 7 and the connector 2.

[Problem that the invention seeks to solve]

The problem with the conventional automatic test method for printed circuit boards described above is that the guide rails into which printed boards are inserted are fixed in parallel at regular intervals, and the connectors that connect to the printed boards are fixed in a top view relative to the guide rails. When testing printed boards that are produced in a wide variety of small quantities and have different external shapes and terminal plating shapes because they are fixed in a shape, each loft is connected to a connecting cable that corresponds to the terminal plating part of the printed board under test. It is necessary to replace the connector and adjust the spacing of the guide rails.

This makes it difficult to automate the insertion and removal of printed boards, and replacement and adjustment work causes a decrease in the operating rate of the testing machine.

SUMMARY OF THE INVENTION The present invention aims to provide an automatic test method for printed boards using probe contact, which can easily automate the insertion and removal of printed boards under the above-mentioned circumstances.

[Means for solving problems]

As shown in FIG. 1, the above-mentioned problem is caused by a board 15-1 having a group of terminals 15-2 common to various printed boards 1, on both the front and back sides of which at least the maximum number of terminals of the printed board 1 to be tested are formed. , guide rails 3 are fixed in parallel so that various printed boards 1 to be tested can be inserted, and various types of adapters 15 are mounted with connectors 15-3 corresponding to the terminal plated portions 1-1 of the respective printed boards 1. and the buffer printed board 1 which is a block having insulation properties.
A pair of probe-type contact parts connected to the testing machine main body 8 via a cable 17, with a contact group 16-2 that has a built-in coil spring and expands and contracts in one direction arranged at a position corresponding to the terminal 5-2. 16, select the adapter 15 of the printed board 1 to be tested, and connect the terminal plating part 1- of the printed board 1.
1 into the connector 15-3, and the adapter 15
The contact part 1 is connected by a robot or a dedicated insertion/extraction mechanism.
6 and narrow the interval between the contact portions 16 to form the contact group 1.
6-2 to the terminal group 15-2 of the adapter 15, and then connect the cable 17 and the connector 15-2 from the testing machine main body 8.
This problem is solved by the automatic test method of the printed circuit board by the probe contact of the present invention, which inputs the power supply and signal through 3.

[Effect]

That is, in the present invention, there is a common terminal group 15-2 forming the maximum number of terminals of the printed board 1 to be tested, a guide rail 3 into which various printed boards 1 can be inserted, and a connector 1.
By preparing a large number of adapters 15 mounted with 5-3, the outer shape can be achieved in high-mix, low-volume production.

Various types of printed circuit boards 1 having different terminal plated portions 1-1 can be held by the respective adapters 15. Therefore, there is no need to replace the connectors 15-3 or adjust the spacing between the guide rails, and the adapters 15 can be held at a constant level. Since it has a size of 16-2, it is easy to insert and remove the contacts between the opposed contact groups 16-2, and automation becomes possible.

In addition, if a poor contact occurs between the terminal plated portion Ll and the connector 15-3, replace it with a spare adapter 15, and if a poor contact occurs between the contact group 16-2 and the terminal group 15-2, replace it with a spare adapter 15. Since maintenance can be easily performed by replacing only the contact pin of the contact group 16-2, the operating rate of the testing machine can be improved.

〔Example〕

The present invention will be described in detail below based on embodiments shown in the drawings.

FIG. 2 is a perspective view showing the automatic test method for printed circuit boards using probe contact according to this embodiment. In the figure, the same members as in FIG.
is an adapter that holds various types of printed boards with different external shapes and connector shapes.

Reference numeral 16 denotes a probe type contact portion that connects the terminal group of the adapter and the tester body, and 17 a cable that connects the tester body and the probe contact portion.

The adapter 15 has a terminal group in the insertion direction of the printed board 1, which is a flat plate 3 having a rectangular shape and a certain size, such as an aluminum alloy plate, that is, in the direction of arrow A.

That is, a substrate 15-1 with a notch 15-1a large enough to securely attach the buffer printed board 15-2, and a printed circuit board 15-1 large enough to attach the notch 15-1a to be tested on both the front and back surfaces. Land 15 that exceeds the maximum number of terminals on board 1
-2a, and a printed circuit board 15-2 for wiring on which a wiring pattern is formed from the land 15-2a to the lead insertion hole of the connector 2 is manufactured.
A buffer printed board 15-2 is fixed to the notch 15-1a formed in the cutout 15-1a.

Then, the guide rail 3 is fixed to the board 15-1 with the guide rail 3 facing the insertion side of the printed board 1 so that the printed boards 1 having different external shapes can be sorted by width dimension and each printed board 1 can be inserted in the sorted unit. Furthermore, the above-mentioned sorting units are separated by the connector 15-3 corresponding to the terminal plating part LL of the printed board 1, and the connector 15-3 is mounted on the buffer printed board 15-2 to print various types of prints. It is assembled so that the plate 1 can be held.

The contact portion 16 is formed by molding a pair of insulating material 1, for example, synthetic resin blocks such as Bakelite nylon, and each block is provided with a pair of insulating material 1, for example, a pair of synthetic resin blocks such as Bakelite nylon, at positions corresponding to the lands 15-2a formed on the front and back surfaces of the buffer printed board 15-2. A group of contacts, ie, contact pins 16-2, which have a built-in coil spring and expand and contract in one direction are implanted. Then, each contactor 16-2 implanted in the pair of contact portions 16 and the testing machine main body 8 are connected by a cable 17, and the contact pins 16-2 are made to face each other in the vertical direction.

That is, it is assembled so that it can move in the direction of arrow B-C.

In an automatic test method for printed circuit boards using the above-mentioned members, a separated adapter 15 is selected, and the terminal plated portion 1-1 of the printed board l mounted with various electronic components is inserted into the connector 15-3 and held. The adapter 15 is inserted between the opposing contact portions 16 by robot handling or a dedicated insertion/extraction mechanism, and moved to narrow the gap between the lands 15- formed on the front and back sides of the buffer printed board 15-2.
By press-contacting the tips of the respective contact pins 16-2 to 2a, the tester main body 8 and the printed circuit board 1 are connected, and automatic testing becomes possible.

In addition, for the printed board 1 on which the printed board connector is mounted, by mounting a connector that can be coupled with the printed board connector on the buffer printed board 15-2,
It can cope with the above automatic test method.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to automate the function test of printed circuit boards for high-mix, low-volume production with an extremely simple configuration and testing method, and there are advantages such as easy maintenance of the contact parts. Therefore, it is expected to have a significant economic effect and is extremely useful industrially.

[Brief explanation of the drawing]

FIG. 1 is a principle diagram of an automatic test method for printed boards using probe contact according to an embodiment of the present invention, FIG. 2 is a perspective view showing the automatic test method for printed boards using probe contact according to this embodiment, and FIG. FIG. 2 is a perspective view showing a conventional automatic test method for printed circuit boards. In the figure, 1 is a printed board, -1 is a terminal plating part, 3 is a guide rail, 8 is a testing machine body, 15 is an adapter, 15-1 is a board, 15-1a is a notch, 15-2 is for a buffer 15-2a is a printed board, 15-2a is a land, 15-3 is a connector, 16 is a contact portion, 16-2 is a contact, and 17 is a cable.

Claims (1)

[Claims] A guide rail (3) and a connector (15-3) corresponding to each of a plurality of types of printed boards (1) with different shapes.
), an adapter (15) having a terminal group (15-2) common to each type, and a contact group (16-2) corresponding to the terminal group (15-2) of the adapter (15). and a contact part (16) connected to the testing machine main body (8), the adapter (15) is selected according to the type of the printed board (1) to be tested, and the adapter (15) is ) is interposed between the printed board (1) and the contact portion (16) to perform the test.