JPH06308186A - Inspecting apparatus for printed wiring board - Google Patents

Abstract

PURPOSE:To provide an inspecting apparatus for printed wiring board, which can divide the wiring work and can shorten the manufacturing lead time. CONSTITUTION:This is an inspecting apparatus having a detecting part 10, an inspecting device 18 and a relay board 30 for relaying both the detecting part 10 and the inspecting device 18. The detecting part 10 has a guide plate having contact pins for contact with a printed wiring board, a rear board 20, on which terminal pins 26 for taking out the detected signal are arranged, and a relay housing, which is arranged between both parts. The rear board 20 can be disassembled into a plurality of unit boards 21-23 and assembled again. It is preferable that the terminal block of a terminal 31 on the detecting side of the relay board 30 is constituted so that the single terminal block is connected only to the single unit board of the unit boards 21-23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board inspecting device, and more particularly to an inspecting device which is excellent in workability of wiring between a detecting portion and an inspecting device.

[0002]

2. Description of the Related Art As a method for inspecting a wiring circuit on a printed wiring board for the presence or absence of electrical continuity and its apparatus, various types have been proposed (for example, Japanese Patent Publication No.
No. 44035, JP-A-56-11060). As shown in FIG. 4, the conventionally used printed wiring board inspecting apparatus 1 is connected to the wiring circuit 71 of the printed wiring board 7 by the contact pins 91 of the detection unit 9.
The presence or absence of electrical continuity is inspected by abutting.

The contact pin 91 has a guide plate 90.
The guide hole 901 is mounted so as to be movable back and forth. Then, the detection signal is taken out from the terminal pin 94 of the rear board 93 arranged on the opposite side of the guide plate 90 of the detection unit 9 and connected to the inspection device 18.

A relay housing 92 for relaying a signal between the contact pin 91 and the terminal pin 94 is disposed between the guide plate 90 and the rear board 93. The relay housing 92 has contact pins 91.
A signal relay member 95 made of a stretchable conductive elastic member as shown in FIG. 4, for example, is arranged so that the signal does not intermittently move even if the signal moves forward and backward in the guide hole 901. Alternatively, as shown in FIG. 2 which will be described later, a relay probe 47 having a relay pin 471 that can be moved forward and backward by an elastic member (not shown) is provided in the relay housing 45.

On the other hand, as shown in FIG.
A relay board 97 is provided between the inspection device 18 and the inspection device 18. The relay board 97 collects a large number of lead wires 98 connected to the terminal pins 94 arranged irregularly on the rear board 93 and connects the lead wires 98 to the inspection device 18. The lead wires 98 gathered in the relay board 97 are bundled or cabled and connected to the inspection device 18. In FIG. 4, reference numeral 181 is an indicator of the inspection device, reference numeral 991.
Is a knock pin for connection, and 931 is a pin hole for accommodating the terminal pin 94.

[0006]

However, the conventional printed wiring board inspection apparatus has the following problems. That is, the number of lead wires 98 has reached several hundreds to several thousands as the density and integration of the printed wiring board progress. However, the wiring between the rear board 93 and the relay board 97 has to be done one by one at the corresponding predetermined positions, so that it is necessary to rely on human hands at present.

The rear board is composed of one board, and the wiring work is performed by one operator. Therefore, there is a problem that the lead time of the wiring process occupies the manufacturing lead time of the above-mentioned inspection apparatus, especially the lead time of the wiring process between the rear board 93 of the detection unit 9 and the relay board 97 is long.

On the other hand, as the density of printed wiring boards increases, the number of inspection points on the printed wiring boards increases, and the number of terminal pins and their density increase. As described above, the lead time of the wiring process between the rear board 93 and the relay board 97 increases in proportion to the increase in the density of the printed wiring, which is a major cause of prolonging the manufacturing lead time of the entire inspection apparatus. There is. In view of the above-mentioned problems, the present invention does not prolong the manufacturing lead time of the wiring process between the relay board and the detection unit in proportion to the increase in the density of the printed wiring board to be inspected. It is intended to provide a board inspection device.

[0009]

The present invention is an inspection device for inspecting a wiring circuit on a printed wiring board by the presence or absence of electrical continuity, and the inspection device has a detecting portion having a contact pin for contacting with the wiring circuit. And a relay board for relaying the detector and the detector, which receives the detection signal of the detector to judge the quality of the wiring circuit, and the detector moves the contact pin back and forth. A guide plate having a guide hole that can be mounted, a rear board having terminal pins for extracting contact pin detection signals, and the contact pins and terminal pins arranged between the rear board and the guide plate. The relay board has a detection side terminal connected to the terminal pin via a lead wire, and an inspection side terminal connected to the inspection device. Back board of the detector may be configured by a plurality of unit boards to allow disassembly and reassembly in the inspection apparatus of printed wiring board according to claim.

What is most noticeable in the present invention is that the rear board for taking out the detection signal from the detector is composed of a plurality of unit boards, and the rear board can be disassembled into the unit boards and reassembled. That is possible. Terminal pins connected to the contact pins are provided on the rear board, and the terminal pins are connected to the detection side terminals of the relay board.

It is preferable that the detection-side terminals in the relay board are composed of a plurality of terminal blocks, and each of the terminal blocks is connected to only one unit board of the rear board. The reason is as follows. With the above configuration, the terminal block of the detection side terminal of the relay board can be divided for each unit board of the rear board.

Therefore, the wiring work between the rear board and the relay board can be performed separately for each wiring work between each unit board and the corresponding terminal block. Then, the wiring work can be performed separately, and then they can be integrated with the rear board and the relay board to complete the whole. Therefore, it is possible to divide the wiring work and shorten the lead time of the wiring work.

When printed wiring boards of different types can be divided into a common part having a common wiring pattern and a different part having a different wiring pattern, the common part is an independent unit board and terminal block. If it is configured by and, that portion can be shared by both printed wiring boards, which is preferable.

[0014]

FUNCTION AND EFFECT The back board in the present invention is composed of a unit board which can be disassembled and reassembled.
Therefore, if the rear board is disassembled into unit boards and the wiring work between each unit board and the relay board is performed, the wiring work between the rear board and the relay board can be performed simultaneously.
It can be divided into several people and performed in parallel by the division of labor. After the wiring work between each unit board and the relay board is completed, each unit board can be assembled together to complete the rear board.

That is, when there are a plurality of unit boards, for example, n, the total lead time of the wiring work of the unit boards is shortened to about 1 / n as compared with the case where the unit boards are not formed. As a result, the lead time of the assembly work for the rear board is slightly increased.

Since the man-hours for assembling the unit board to the rear board are relatively smaller than the man-hours for wiring, the lead time for wiring the rear board is greatly shortened. As described above, according to the present invention, even if the density of the printed wiring board to be inspected is increased, the manufacturing lead time of the wiring process between the inspector and the detection portion does not increase in proportion to the printed wiring board. A wiring board inspection device can be provided.

[0017]

【Example】

Embodiment 1 A printed wiring board inspection apparatus according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2, this example is an inspection apparatus 1 for inspecting a wiring circuit 71 of a printed wiring board 7 according to the presence or absence of electrical continuity.
Is a detection unit 10 having a contact pin 41 for contacting with the wiring circuit 71, and an inspector 18 that receives a detection signal from the detection unit 10 and determines the quality of the wiring circuit 71.
And a relay board 30 that relays the detection unit 10 and the inspection device 18.

The detection unit 10 includes the contact pin 4
1. A guide plate 40 in which a guide hole 42 for mounting the back and forth 1 is formed, a rear board 20 in which a terminal pin 26 for extracting a detection signal of the contact pin 41 is arranged, and the rear board 2
0 and the guide plate 40, and the relay housing 4 for connecting the contact pin 41 and the terminal pin 26.
5 and 5.

The relay board 30 has a detection side terminal 31 connected to the terminal pin 26 through the lead wire 15.
And an inspection side terminal (not shown) connected to the inspection device 18. As shown in FIG. 1, the rear board 20 is composed of a plurality of unit boards 21 to 23. The rear board 20 has the unit boards 21 to 21.
23 is configured so that it can be disassembled and reassembled.

Each of these will be described in detail below. Detector 1
0 indicates the guide plate 40 and the rear board 2 as shown in FIG.
0 and a relay housing 45,
0 and 45 are connected by a knock pin 101. A large number of contact pins 41 that come into contact with the wiring circuit 71 of the printed wiring board 7 are mounted on the guide plate 40, and the contact pins 41 move forward and backward along the guide holes 42.

On the other hand, a relay probe 47 corresponding to the contact pin 41 is mounted on the relay housing 45. A relay pin 471 capable of advancing and retracting is attached to the tip of the relay probe 47, and is urged outward (direction of the contact pin 41) by an elastic member (not shown) housed in the relay probe 47. .

The relay pin 471 is the contact pin 41.
The contact pin 41 is pressed outward by abutting on the head portion 412. Then, the detection unit 10 is moved to move the pin end 411 of the contact pin 41 to the printed wiring board 7.
Contacting the wiring circuit 71, the contact pin 41 and the relay pin 471 are retracted, and the wiring circuit 71 and the pin end 411 of the contact pin 41 are pressed by the urging force of the elastic member to ensure electrical continuity. It

On the other hand, the upper end portion 472 of the relay probe 47 projects from the other end surface of the relay housing 45.
The binding force of the knock pin 101 makes contact with the bottom surface 261 of the terminal pin 26 of the rear board 20.

A pin hole 27 is formed in the rear board 20, and a terminal pin 26 is accommodated in the pin hole 27. The terminal pin 26 has a bottom surface 261 contacting the upper end portion 472 of the relay probe 47, and a terminal portion 262 for connecting the lead wire 15 to the upper surface 2 of the rear board 20.
It has started from 01. The lead wire 15 has about 2
There are 000 wires.

As shown in FIG. 1, the terminal portion 262 of the terminal pin 26 is soldered to the lead wire 15, and the other end of the lead wire 15 is connected to the detection side terminal 31 of the relay board 30. ing.

The rear board 20 has a mounting screw 202.
3 unit boards 21-2 screwed by
The rear board 20 can be disassembled into three unit boards 21 to 23. Also, reassemble it by screwing it back to the original back board 2
It is possible to build up to zero.

On the other hand, the detection side terminal 31 of the relay board 30 is internally connected to the inspection side terminal, and the inspection side terminal is the cable 1
It is connected to the inspector 18 by 6. In addition, the wiring pattern is standardized for the connection between the detection side terminal 31 and the inspection side terminal and the cable connection between the inspection side terminal and the inspection device 18, and the wiring man-hour and the lead time are shortened. . In FIG. 2, reference numeral 102 is a knock hole through which the knock pin 101 is inserted.

Next, the printed wiring board inspection apparatus 1 of this example
The action and effect of will be described. In the inspection apparatus 1 of this example, as shown in FIG. 1, the rear board 20 is composed of three unit boards 21 to 23, and can be divided into these unit boards 21 to 23. Therefore, although the connection of the lead wires 15 is a large number of about 2000, each of the unit boards 21 to 21 is connected.
You can divide the work every 23 and work at the same time.

After connecting the lead wires 15 to the respective unit boards 21 to 23,
The rear board 20 is completed by reassembling 1 to 23. As described above, in the inspection device 1 of the present example, the wiring work between the rear board 20 and the relay board 30 which occupies most of the wiring process and cannot be standardized can be simultaneously performed by the division of labor. Therefore, the lead time of the wiring process can be shortened.

As described above, according to this example, even if the density of the printed wiring board 7 to be inspected is increased, the manufacturing lead time of the wiring process between the inspector 18 and the detection section 10 is lengthened in proportion thereto. Inspector 1 for printed wiring board 7
Can be provided.

Second Embodiment In this embodiment, as shown in FIG. 3, in the first embodiment, the rear board 20 is composed of two unit boards 24 and 25, and the detection side terminal 32 in the relay board 30 is a plurality of terminals. In this example, the blocks 33 to 36 are configured so that each of the terminal blocks 33 to 36 is connected to only one of the first unit board 24 and the second unit board 25.

As shown in FIG. 3, the inspection apparatus 1 of this example has
The back board 20 is composed of a first unit board 24 and a second unit board 25, and the respective unit boards 24, 25 can be attached and detached by mounting screws. In addition, the relay board 30 includes the left and right side plates 301, 302.
And a ceiling plate 303 that connects both side plates 301 and 302, and the relay board 30 is attached to the rear board 20 by fixing both side plates 301 and 302 with set screws 304.

Both side plates 301, 30 of the relay board 30
Two terminal blocks 33 to 36, which are wrapping terminals that also serve as the detection-side terminals 32 and the inspection-side terminals 39, are attached to the unit 2. The terminals on the detection portion side of the first and second terminal blocks 33, 34 attached to the left side plate 301 are connected to the first unit board 24 by the lead wires 15.

On the other hand, the terminals on the detection portion side of the third and fourth terminal blocks 35, 36 attached to the right side plate 302 are connected to the second unit board 25 by the lead wires 15. The inspection-side terminal 39 of each of the first and second terminal blocks 33 and 34 is the first cable 1 connected to the inspection device 18.
61, and the inspection side terminals 39 of the third and fourth terminal blocks 35, 36 are connected to the second cable 162 connected to the inspection device 18.

In this example, the terminal blocks 33 to 36 of the relay board 30 and the unit board 24 of the rear board 20,
25, there is a correspondence relationship, and the connection destinations of the respective terminal blocks 33 to 36 are the single unit board 24,
Limited to 25. Therefore, the unit board 24,
Wiring work between the terminal blocks 33 to 36 can be performed independently for each 25. Therefore, since the above wiring work can be performed in parallel by the division of labor, the lead time can be reduced by almost half.

Even in the case of different types of printed wiring boards, it is often found that the wiring pattern can be divided into a common wiring pattern portion and a different wiring pattern portion. In such a case, by dividing the unit boards 24 and 25 into those corresponding to the common portion and those corresponding to the different wiring pattern portions, the unit board corresponding to the common portion and its terminals are divided. It can be shared between printed wiring boards different from blocks. As a result, both cost reduction and lead time reduction can be realized. Others are the same as those in the first embodiment.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a wiring state between a rear board and a relay board of an inspection device according to a first embodiment.

FIG. 2 is an overall explanatory diagram of the inspection device according to the first embodiment.

FIG. 3 is an explanatory diagram of a wiring state between a rear board and a relay board of the inspection device according to the second embodiment.

FIG. 4 is an overall explanatory view of a conventional inspection device.

[Explanation of symbols]

 1. ． ． Inspection device, 10. ． ． Detection unit, 18. ． ． Inspection device, 20. ． ． Back board, 21-25. ． ． Unit board, 26. ． ． Terminal pin, 30. ． ． Relay board, 40. ． ． Guide plate, 41. ． ． Contact pins, 42. ． ． Guide hole, 45. ． ． Relay housing, 7. ． ． Printed wiring board, 71. ． ． Wiring circuit,

Claims (2)

[Claims] 1. An inspection apparatus for inspecting a wiring circuit on a printed wiring board for the presence or absence of electrical continuity, the inspection apparatus including a detection unit having a contact pin for contacting the wiring circuit, and a detection unit. It has an inspector that receives a detection signal and determines whether the wiring circuit is good or bad, and a relay board that relays the detector and the inspector. The detector has a guide for mounting the contact pin so that the contact pin can move forward and backward. A guide plate having a hole, a rear board having a terminal pin for extracting a contact pin detection signal, and a relay housing arranged between the rear board and the guide plate to connect the contact pin and the terminal pin. The relay board has a detection side terminal connected to the terminal pin via a lead wire and an inspection side terminal connected to the inspection device. The printed wiring board inspection device is characterized in that the face board is composed of a plurality of unit boards so that the face board can be disassembled and reassembled. 2. The detection-side terminal of the relay board according to claim 1, wherein the detection-side terminal is composed of a plurality of terminal blocks.
Each of the terminal blocks is connected to only one unit board of the rear board, and an inspection apparatus for a printed wiring board is provided.