JP3134518B2 - Inspection jig for printed wiring board - Google Patents

Inspection jig for printed wiring board

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Publication number
JP3134518B2
JP3134518B2 JP04199142A JP19914292A JP3134518B2 JP 3134518 B2 JP3134518 B2 JP 3134518B2 JP 04199142 A JP04199142 A JP 04199142A JP 19914292 A JP19914292 A JP 19914292A JP 3134518 B2 JP3134518 B2 JP 3134518B2
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JP
Japan
Prior art keywords
probe
board
pin
stylus
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP04199142A
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Japanese (ja)
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JPH0618598A (en
Inventor
直哉 小林
Original Assignee
イビデン株式会社
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Filing date
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Priority to JP04199142A priority Critical patent/JP3134518B2/en
Publication of JPH0618598A publication Critical patent/JPH0618598A/en
Application granted granted Critical
Publication of JP3134518B2 publication Critical patent/JP3134518B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for inspecting a printed wiring board, particularly a configuration around a probe which exerts an excellent effect on inspection of a high-density wiring circuit, and electrical connection and disconnection with an inspector. And a structure around the terminal board to facilitate the above.

[0002]

2. Description of the Related Art Various methods have been proposed for inspecting a wiring circuit on a printed wiring board based on the presence or absence of electrical continuity, and an apparatus therefor (for example, Japanese Patent Application Publication No. Hei.
44035, JP-A-56-11060). As a conventionally used jig for inspecting a printed wiring board, as shown in FIGS. 13 and 14, a stylus 92 of the probe 9 is brought into contact with a wiring circuit 75 of the printed wiring board 7. Is used to check for electrical continuity.

The inspection jig comprises a guide plate 8 for preventing rattling of the tip of the probe, a pin board 88 for holding the probe 9, and a probe 9 having both of them penetrated and mounted. The probe 9 has a pipe-shaped socket 91 and a stylus 92 as shown in FIG.
The socket 91 is inserted and fixed in the through hole 881 of the pin board 88. On the other hand, the stylus 92 is inserted into the guide hole 81 of the guide plate 8 so as to be able to advance and retreat. The stylus 92 has a plunger 920 on its upper part. The plunger 920 is mounted in the lumen of the tube 25 via a spring (not shown) so as to be able to advance and retreat.

The upper end of the probe 9 is electrically connected to a tester for detecting electrical continuity via a lead wire. In this case, the connection between the upper end of the probe and the lead wire is often made by soldering.
The guide plate 8 has a concave portion 82 for arranging the lower end of the socket 91. The probe 9 is provided at a position corresponding to the wiring circuit 75 of the printed wiring board 7 as an object to be inspected. The guide plate 8 and the pin board 8
8 is integrally fixed.

When inspecting the electrical continuity of the wiring circuit, the guide plate 8 is placed from above and below the printed wiring board 7.
Then, the pin board 88 is lowered and raised to bring the stylus 92 of the probe 9 into contact with the stylus pad of the wiring circuit 75 (hereinafter, omitted). At this time, if the wiring circuit 75 has not been disconnected or short-circuited, normal electrical conduction can be obtained. Thus, the quality of each wiring circuit 75 can be determined.

In the above, the tip 921 of the stylus 92
Is brought into contact with the wiring circuit 75, the stylus 92 retreats toward the socket 91 along the guide hole 81 of the guide plate 8, and
The plunger 920 enters the socket 91.
This is to protect the tip 921 of the stylus 92.
In FIG. 13, reference numerals 87 and 886 denote insertion holes for knock pins 891, and reference numerals 871 and 885 denote positioning pins 89.
2 is an insertion hole.

[0007]

However, the above-described conventional inspection jig has the following problems. That is, in recent years, the density of wiring circuits in printed wiring boards has been increasing, and the pitch of pads at the ends of the wiring circuits has become increasingly narrower.
For example, this pitch is about 0.65 mm in the past, but is reduced to 0.3 mm in a high-density wiring circuit.

To cope with this, the probe 9
Since it is necessary to reduce the arrangement pitch of the probe, the size (diameter) of the probe itself also needs to be reduced. In the probe 9 currently used, the outer diameter of the socket 91 is about 1 mm, and the diameter of the stylus 92 is as small as 0.5 mm.

In the conventional inspection jig, the tip 921 of the stylus 92 is directly connected to the wiring circuit 75 during the inspection.
Is in contact with At the time of the contact, as described above, the stylus 92 slides in the guide hole 81 of the guide plate 8 and retreats. After the inspection, the stylus 92 is again projected to the original position by a spring spring provided in the socket 91. Therefore, the stylus 92 slides in the guide hole 81 every time the inspection is performed.

Therefore, the stylus 92 is easily worn. In addition, if the diameter of the guide hole 81 is increased to prevent this wear, the clearance between the guide hole 81 and the stylus 92 is increased, and the tip 921 of the stylus 92 may rattle, resulting in an inspection failure. The stylus 92 is inserted into a socket 91 fixed to the pin board 88. Therefore, the axes of the socket 91, the stylus 92, and the guide hole 81 must be the same. Therefore, in order to smoothly slide the small-diameter stylus 92, the guide hole 81 needs to be drilled with high dimensional accuracy so that the axes match.

The stylus 92 slides coaxially in the socket 91 and the guide hole 81, and the tip 921 of the stylus 92 directly contacts the wiring circuit 75. Vulnerable to damage. As described above, in the conventional inspection jig, there is a problem with the increase in the density of the wiring circuit, particularly, in the reduction in diameter and damage of the probe stylus 92, the accuracy of drilling the guide hole 81, and the like.

Further, the upper end of the probe is electrically connected to an inspection device via a lead wire, and the inspection circuit is electrically closed. Conventionally, several tens to several thousands
The upper ends of a large number of probes, such as books, and the lead wires are connected by soldering, and the other ends of the lead wires are connected to an inspection device.

On the other hand, since the arrangement pattern of the probes changes each time the printed wiring board changes, it is necessary to replace the so-called detection section around the probe for each printed wiring board. Therefore, at the time of this replacement, a large number of the above soldering between the probe and the lead wire must be removed,
The removal work requires large man-hours. Also, a large number of lead wires and probes must be soldered again according to the new inspection circuit.

Further, as described above, since the probe is a small-diameter part, it is an expensive precision machined part. Therefore, it is costly to use a new probe every time the wiring circuit of the device under test changes. Therefore, it is also desired that the probe can be reused. The present invention has been made in view of the above-mentioned conventional problems, and has been developed to reduce the diameter of a stylus of a probe and prevent damage, to facilitate electrical connection and removal with an inspection device, and to reuse a probe. It is intended to provide an inspection jig.

[0015]

The present invention relates to an inspection jig for inspecting a wiring circuit on a printed wiring board based on the presence or absence of electrical continuity. The inspection jig is applicable to a guide plate, a pin board, and the wiring circuit. The probe comprises a contact pin for making contact with the probe and a probe having a built-in stylus for making contact with the contact pin, and the contact pin is mounted on the guide plate so as to be able to advance and retreat. The probe has a terminal board, a lead wire, and a lead wire between the connector board connected to the inspection instrument and the probe, and the terminal board has a pin hole facing the probe terminal. The lead wire has at one end a terminal pin mounted in the pin hole of the terminal board and at the other end a conductor exposed portion, and the lead wire has one end connected. The other end with being connected to the board in inspection jig of a printed wiring board and having a relay connector that can attach and detach the lead wires.

The first point which is most noticeable in the present invention is that the probe of the conventional example is divided into two sets,
The contact pin and the probe are configured such that the contact pin is brought into contact with the wiring circuit, while the stylus of the probe is brought into contact with the contact pin.

That is, contact pins are attached to the guide plate facing the printed wiring board so as to be able to advance and retreat, and a probe is fixed to the pin board facing the guide plate. And
The probe has a built-in stylus that is elastically movable.
Thus, as a means for incorporating the stylus, there is a means for elastically holding the stylus in the tube and mounting them in the socket (see FIGS. 4 and 5). There is also a means for inserting a direct contact needle into the probe to elastically hold it. As a means for elastically holding, there is a spring.

The contact pins are mounted in the guide holes of the guide plate so as to be able to advance and retreat. The contact pin has a tip for making contact with the wiring circuit, and has a contact part for making the stylus contact with the opposite side. Preferably, the contact portion has a head having a larger diameter than the body of the contact pin. Further, it is preferable to provide a curved concave portion in the corresponding contact portion in order to ensure the contact of the stylus (see FIG. 6).

In the inspection jig of the present invention, the guide plate and the pin board are provided with the contact pins and probes having the above-described configuration according to the present invention, and the inspection jig is used for inspecting a portion of the printed circuit board where the wiring circuit is not dense. In addition, a probe pin having a relatively large diameter similar to the above-described conventional example can be provided.

Another thing to note in the present invention is that, as means for electrically connecting the probe and the inspection device, a terminal board and a lead are provided between the connector board connected to the inspection device and the probe. That is, a wire and a lead wire are provided and connected, and a relay connector is attached to the lead wire.

That is, a terminal board which is detachable from the pin board is provided outside the pin board. A terminal pin is mounted in a pin hole of the terminal board, and when the terminal board is mounted on the pin board, the probe terminal of the probe and the terminal pin are in contact with each other and are connected to each other. The lead wire has one end connected to the terminal pin and the other end formed with a conductor exposed portion.

On the other hand, a connector board is provided outside the tester, and a connector board is connected to a detection signal input terminal of the tester. One end of the lead wire is connected to the connector board, and a relay connector is attached to the other end. The relay connector has a structure in which a conductor exposed portion of a lead wire can be attached and detached.

Preferably, the relay connector is provided with a display for identifying a terminal number or a terminal position of the connector board to which the lead wire is connected. The display includes identification marks such as colors, letters, numbers, symbols, uneven patterns, and the length and cross-sectional shape of the relay connector itself. As a result, the work of connecting the lead wires to each other is facilitated, and incorrect connection can be prevented.

[0024]

In the inspection jig of the present invention, a contact pin is provided on a guide plate and a probe is provided on a pin board.
The contact pins are brought into contact with the wiring circuit of the printed wiring board, and the probe stylus is brought into contact with the contact pins. That is, in the present invention, a portion (contact pin) that slides in the guide hole and contacts the wiring circuit and a probe that is a detection terminal of electrical conduction are divided into two parts. Therefore, the advance and retreat of the contact pin and the advance and retreat of the stylus of the probe are independent of each other.

Therefore, it is not necessary to align the three axes of the probe fixed to the pin board, the stylus inserted therein, and the guide hole of the guide plate on which the contact pins advance and retreat with high precision. Therefore, it is sufficient that the guide hole is bored in accordance with the wiring circuit of the printed wiring board, and high precision is not required as in the related art, and drilling is easy. In addition, since the guide hole only needs to allow the contact pin to slide smoothly, a small-diameter one can be provided, and rattling of the contact pin can be reduced. Further, when the contact pin is worn, it can be easily and inexpensively replaced.

Further, since the probe is not directly brought into contact with the wiring circuit, the probe is not damaged as in the prior art.
In addition, the contact pin directly contacts the wiring circuit and slides in the guide hole. However, unlike the conventional probe stylus, the contact pin does not move linearly in both the guide hole and the probe socket. No damage due to misalignment.

Further, as described above, since the contact pins and the probes are divided so as not to cause excessive movement of the two during the inspection, the diameters of both can be reduced. Therefore, inspection of a high-density wiring circuit is also easy. In addition, the probe is elastically and removably mounted in a socket having a small inner diameter of 0.1 to 0.3 mm. Therefore, it is an expensive precision component, but since there is no damage as described above, the cost of the inspection jig is also reduced.

Further, the inspection jig of the present invention facilitates electrical connection between the inspection device and a so-called detection section around the probe. That is, as described above, the terminal pins attached to the lead wires are connected to the probe terminals, and the lead wires are connected to the inspection device via the connector board. Therefore, by attaching and detaching the conductor exposed portion of the lead wire to and from the relay connector to which the lead wire is connected, the inspection device and the probe can be easily connected or disconnected.

Further, since the connection between the relay connector and the lead wire is made by the connector, the connection work is extremely easy as compared with the attachment and detachment by soldering. Therefore, it is extremely easy to replace the detection unit when the printed wiring board to be inspected is changed. Further, in the present invention, the probe and the terminal pin are connected by pressure contact, and no wire or the like is attached to the probe. That is, by removing the terminal board from the pin board, the upper part of the probe is opened and there is no obstacle. Therefore, it is easy to remove the probe from the pin board.

Further, as described above, the contact pins can be easily removed. Therefore, it is a precision machined component, and it is easy to remove expensive probes and contact pins from the pin board and the guide plate, attach them to other detection units, and reuse them. Therefore, according to the present invention, it is possible to reduce the diameter of the stylus of the probe and to prevent the damage, and it is possible to easily connect and disconnect the probe with the inspection device, and to reuse the probe and the contact pin. A plate inspection jig can be provided.

[0031]

【Example】

Embodiment 1 An inspection jig for a printed wiring board according to an embodiment of the present invention will be described with reference to FIGS. The overall configuration is as follows: a detection unit for transmitting a signal to the upper end of the probe 1 by contacting the contact pins 3 with the printed wiring board 7; a lead wire 15 from the upper end of the probe 1;
Inspection device 1 via lead wire 16 and connector board 19
8 will be described separately.

As shown in FIGS. 1 to 3, the detecting portion of the inspection jig of this embodiment includes a guide plate 8, a pin board 88, a contact pin 3 for making contact with a wiring circuit 71, and a contact pin 3. And a probe 1 having a built-in stylus 2 for making contact with the probe 1. The contact pins 3 are mounted on the guide plate 8 so as to be able to advance and retreat, and the stylus 2 is built in the socket 11 of the probe 1 so as to be elastically advanceable and retractable.

The wiring circuits 71 are arranged at high density on the printed wiring board 7. The guide plate 8 and the pin board 88 are detachably connected to each other by a knock pin 891 as in the conventional art. As shown in FIGS. 1 to 3, 7 and 8, the guide plate 8 has a large number of guide holes 8 for mounting the contact pins 3 so as to be able to advance and retreat.
5 and an opening groove 86. Also, the pin board 88
As shown in FIGS. 2 and 3, the probe 1 has a through hole 882 for inserting and fixing the socket 11 of the probe 1.

As shown in FIGS. 2, 3 and 6, the contact pin 3 has a tip 31 for contacting the wiring circuit 71 and a head as a contact portion for contacting the stylus 2. It has a part 32. Also, the head 32 has a curved concave portion 321.
(FIG. 6). As shown in FIGS. 2 to 5, the probe 1 includes a socket 11 and a stylus 2 inserted into the socket 11 so as to be able to advance and retreat. The socket 11 is a hollow pipe as shown in FIG.
Has zero. The upper end 12 of the probe 1 faces the terminal pins 42 mounted on the terminal board 4 in one-to-one correspondence (FIG. 1).

On the other hand, the stylus 2 is mounted in the tube 25 so as to be able to advance and retreat as shown in FIGS. That is, as shown in FIG. 5, the stylus 2 has a guide column 22 having substantially the same diameter as that of the stylus 2 at the upper portion, and a connecting portion 21 having a small diameter therebetween. Then, first, the spring 23 is inserted into the tube 25, and then the stylus 2 is inserted. Then, the tube 25 is swaged at the outer portion of the connecting portion 21 of the stylus to form the swaged portion 251. .

Thus, the stylus 2 is elastically mounted in the tube 25 by the spring spring 23 so as to be able to advance and retreat. The reference numeral 252 indicates the tube 25.
And a caulking portion provided at the upper end portion for contacting the upper end of the spring 23. Then, the stylus 2 thus configured is inserted into the hollow portion 111 of the socket 11 as shown in FIG. At this time, the upper end of the tube 25 holding the stylus 2 is
Abut. Further, the probe 1 constructed as described above
Is inserted into the through-hole 882 of the pin board 88 as shown in FIGS. Others
This is the same as the conventional example.

Next, the operation and effect of the detection unit will be described.
That is, in order to inspect the quality of the wiring circuit 71 on the printed wiring board 7 by electrical continuity, as shown in FIGS. 1 to 3, the guide plate 8 and the pin board 88 are moved closer to each wiring circuit 71 in the vertical direction. Then, the guide plate 8 faces the printed wiring board 7.

At this time, before the contact between the two, the contact pins 3 are in a state of protruding from the guide plate 8 as shown in FIG. Also, the head 3 of the contact pin 3
The tip 21 of the stylus 2 of the probe 1 is in contact with 2. Then, the guide plate 8 comes into contact with the printed wiring board 7,
When the tip 31 of the contact pin 3 comes into contact with the wiring circuit 71, the contact pin 3 slides up in the guide hole 85. Then, as shown in FIG. 3, the tip 31 of the contact pin comes to the same position as the lower surface of the guide plate 8.

Therefore, the head 32 of the contact pin 3 is
The stylus 2 is pressed in the direction of the probe 1. Therefore, the stylus 2 enters the tube 25 against the urging force of the spring 23 (FIG. 5). As described above, after the tip 31 of the contact pin 3 comes into contact with the wiring circuit 71, the probe 1, the stylus 2,
By passing a current through the contact pin 3, the quality of the wiring circuit 71 is determined in the same manner as in the prior art (FIG. 1).

After the inspection, the guide plate 8 and the like are moved away from the printed wiring board 7. Therefore, the contact pin 3 protrudes as shown in FIG. 2 by the urging force of the spring 23 of the stylus 2. As described above, in the inspection jig of this embodiment, the contact pins 3 are mounted on the guide plate 8 so as to be able to advance and retreat, and the probe 1 is fixed to the pin board 88 and the stylus 2 is able to advance and retreat into the probe 1. I am wearing it.

Therefore, the contact pins 3 are independent of the advance and retreat of the stylus. Therefore, as in the prior art, the three axes of the probe 1 fixed to the pin board 88, the stylus 2 inserted therein, and the guide hole 85 of the guide plate on which the stylus advances and retreats with high precision. You don't have to. That is, in this example, even if the axis of the contact pin 3 and the axis of the stylus 2 are misaligned, there is no problem as long as they are in contact (FIGS. 2 and 3).

For this purpose, the guide hole 85 may be formed in accordance with the wiring circuit of the printed wiring board. Therefore, high precision is not required for the drilling accuracy with respect to the axis of the guide hole 85 and the hole of the pin board 88, and the drilling is easy. Further, since the guide hole 85 only needs to allow the contact pin 3 to slide smoothly, a small-diameter guide hole can be provided without rattling.

Further, since the probe 1 does not directly contact the stylus 2 with the wiring circuit 71, there is no damage as in the prior art. In addition, the contact pin 3 directly contacts the wiring circuit 71 and slides in the guide hole 85. However, as in the case of a conventional probe stylus, the contact pin 3 moves linearly in both the guide hole 85 and the probe socket. There is no. Therefore, there is no damage due to misalignment between the two.

Further, since the contact pin 3 and the probe 1 are divided so as not to cause excessive movement of the two during the inspection, both diameters can be reduced. In this example, the diameter of the contact pin 3 is 0.27 mm, and the outer diameter of the socket of the probe 1 is 0.45.
mm, inner diameter is 0.27 mm, outer diameter of stylus 2 is 0.15 m
m. In the contact pin 3 of this example,
Since a curved concave portion 321 is provided in the head 32, the head 3
The tip 20 of the stylus 2 can be reliably brought into contact with the stylus 2.

Next, the relay portion (lead wire from the upper end of the probe, relay connector 5, lead wire 16,
The portion from the connector board 19 to the inspection device will be described with reference to FIGS. 1, 9, and 10. FIG.

As shown in FIG. 1, the relay section of this embodiment includes a terminal board 4, a lead wire 15, a relay connector 5, and a lead provided between a connector board 19 connected to an inspection device 18 and the probe 1. It has a line 16. The lead wire 15 has a terminal pin 42 attached to the terminal board 4 at one end and a conductor exposed portion 1 at the other end as shown in FIG.
50 are formed. The conductor exposed portion 150 is formed by removing the insulating coating of the lead wire 15. One end of the lead wire 16 is the connector board 1
9 and the other end is a lead wire 1
5 has a relay connector 5 to which the connector 5 can be attached and detached.

The terminal board 4 has a pin hole 41 which is in a one-to-one facing relationship with the probe terminal 12 as shown in FIG. The pin hole 41 has a fine hole 412 at the upper part for drawing out the lead wire 15. In addition, terminal pin 4
When the terminal pin 2 is accommodated therein, the terminal pin 42 has such a depth that the terminal pin 42 partially protrudes from the lower end 411 of the pin hole.

On the other hand, as shown in FIG. 9, one end of the lead wire 16 is connected to a terminal 191 of a connector board 19 connected to the tester 18. The relay connector 5 is attached to the other end of the lead wire 16. Relay connector 5
As shown in FIG. 10, the insulating coating 55, the main body 50,
And a rigid ring 53 fitted into the main body 50. The wire end 161 of the lead wire 16 is connected to the cylindrical terminal 51 of the main body 50 of the relay connector 5.

The other end of the main body 50 of the relay connector 5 is formed with an opening 52 branched into two upper and lower sheets for inserting the lead wire 15. In the main body 50, between the rigid ring 53 and the terminal 51, a constricted portion 54 for sandwiching the conductor exposed portion 150 is formed. The main body 50 is made of a spring steel material having elasticity, and the insulating coating 55 is made of a rubber material.

The main body 50 has a structure in which, when the opening 52 is pressed and narrowed, the constricted portion 54 expands around the rigid ring 53 as a fulcrum (FIG. 10B). Also, if the opening 52 is returned to its original position, the restoring force of the spring steel material will
As shown in (C), the constricted portion 54 is restored. Also,
The gap g of the constricted portion 54 is always smaller than the diameter D of the conductor exposed portion 150 of the lead wire 15, but when the opening 52 is narrowed and the constriction is enlarged, the conductor exposed portion 15 is reduced.
It is designed to be larger than the diameter D of 0.

As shown in FIG. 9, the insulating coating 55 of the relay connector 5 is provided with a band-shaped color ring 551 as the identification display. The coloring 551 is
The color and the number of rings are changed according to the position of the terminal 191 of the connector board 19 to which the lead wire 16 to which the relay connector 5 is attached is connected. In this example, as shown in FIG. 9, all the terminals for the terminal 1911 at the uppermost stage of the connector board 19 are provided with one color ring. The terminal positions on the connector board 19 can be identified by the number of colors and the colors.

Next, the operation and effect of the relay section of this embodiment will be described. In this example, the lead wire 15 can be easily attached to and detached from the relay connector 5 of the lead wire 16. That is, at the time of this attachment / detachment, as shown in FIG. 10B, the opening 52 of the relay connector 5 is pressed. As a result, 53
With the fulcrum as a fulcrum, the constricted portion 54 of the relay connector 5 expands,
The lead wire 15 can be inserted (FIG. 10B).

Then, the conductor exposed portion 150 of the lead wire 15 is inserted into the main body 50 through the opening 52 to the depth of the constricted portion 54. Next, the pressing of the opening 52 is released. As a result, the opening 52 is restored to its original state, the constriction of the constricted portion 54 is restored again, and the lead wire 15 is clamped (FIG. 10C). When detaching the lead wire 15 from the relay connector 5, the reverse operation (operation from C to B in FIG. 10) is performed.

The insulating cover 55 of the relay connector 5 is provided with the color ring 551 as described above so that the connection relation between the lead wire 16 and the lead wire 15 can be easily identified. Therefore, the work of connecting the lead wires 15 is made more efficient, and incorrect connection can be prevented. The probe 1 is connected to the lead wire 15 by pressing the terminal board 4 against the pin board 88 so that the probe terminal 12 contacts the terminal pin 42 and is electrically connected (see FIG. 1).

As described above, according to the present embodiment, the inspection device 18
It is extremely easy to connect and disconnect the sensor and the detector. Therefore, it is extremely easy to replace the detection unit when the printed wiring board 7 to be inspected is changed. Further, in this example, as shown in FIG. 1, the lead wire 15 is not soldered to the probe terminal 12. Therefore, it is easy to remove the probe 1 from the pin board 88. The contact pins 3 can be easily removed from the guide plate 8 if the pin boat 88 is removed. Therefore, the probe 1 and the contact pins 3 can be easily removed from the pin-board 88 and the guide plate 8 and reused for another printed wiring board detection unit.

As described above, according to the present embodiment, even for a high-density wiring circuit, the probe stylus can be reduced in diameter and prevented from being damaged, and a guide hole can be easily formed. An inspection jig for a printed wiring board, which can be easily connected to and detached from a device, and which can reuse probes and contact pins, can be provided.

Embodiment 2 This embodiment is a modification of the first embodiment in which the method of identifying and indicating the insulating coating 55 of the relay connector 5 is changed. Example 1
In FIG. 9, a colored band-shaped coloring ring 551 is used as shown in FIG. 9, but in this example, as shown in FIG. 11, a cylindrical identification code composed of a combination of color-coded cylindrical three-color bands is used. 552 are provided. As a result, the lead wire 16 is connected. Terminal 19 of connector board 19
1 can be easily identified. Others are the same as the first embodiment.

In addition, as shown in FIG. 12, the identification display method may be a striped pattern 553 extending in the axial direction. If symbols and marks are used together, the discriminating power is further improved.

[Brief description of the drawings]

FIG. 1 is an overall explanatory view of an inspection jig in a first embodiment.

FIG. 2 is a cross-sectional view around a contact pin and a printed wiring board in a state before inspection according to the first embodiment.

FIG. 3 is a cross-sectional view around a contact pin and a printed wiring board at the time of inspection in the first embodiment.

FIG. 4 is a developed front view of a socket and a stylus in the probe according to the first embodiment.

FIG. 5 is a cross-sectional view of a tip portion of the probe according to the first embodiment.

FIG. 6 is a front view of a contact pin according to the first embodiment.

FIG. 7 is a plan view of a guide plate in the first embodiment.

FIG. 8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is an explanatory diagram showing a connection relationship around a lead wire and a relay connector in the first embodiment.

FIG. 10 is an explanatory sectional view showing the relay connector and its operation in the first embodiment.

FIG. 11 is a perspective view of a relay connector according to the second embodiment.

FIG. 12 is a perspective view of another relay connector according to the second embodiment.

FIG. 13 is an overall explanatory view of an inspection jig in a conventional example.

FIG. 14 is an explanatory diagram around a probe of an inspection jig in a conventional example.

[Explanation of symbols]

 1. . . Probe, 11. . . Socket, 15. . . Lead wire, 150. . . Exposed conductor, 16. . . Lead wire, 18. . . Inspection device, 19. . . Connector board, 2. . . Stylus, 25. . . Tube, 3. . . Contact pin, 31. . . Tip, 4. . . Terminal board, 41. . . Pin holes, 42. . . Terminal pins, 5. . . 6. relay connector, . . Printed wiring board, 71. . . 7. high-density pitch wiring circuit; . . Guide plate, 85. . . Guide hole, 88. . . Pin board,

Continuation of the front page (56) References JP-A-63-300978 (JP, A) JP-A-57-200865 (JP, A) JP-A-2-130483 (JP, A) JP-A-60-92176 (JP, A) , U) Fully open Showa 61-119777 (JP, U) Fully open Showa 60-135677 (JP, U) Fully open Showa 60-17458 (JP, U) (58) Fields studied (Int. Cl. 7 , DB) G01R 1/06-1/073 G01R 31/00 G01R 31/02 G01R 31/28 H05K 3/00

Claims (2)

    (57) [Claims]
  1. An inspection jig for inspecting a wiring circuit on a printed wiring board based on the presence or absence of electrical continuity, the inspection jig comprising a guide plate, a pin board, and a contact for making contact with the wiring circuit. A probe having a built-in pin and a stylus for contacting the contact pin, wherein the contact pin is mounted on the guide plate so as to be able to advance and retreat, and the stylus is built into the probe so as to be elastically advanceable and retractable. The probe has a terminal board, a lead wire, and a lead wire between the connector board connected to the inspection instrument and the probe. The terminal board has a pin hole facing the probe terminal. Has a terminal pin mounted in the pin hole of the terminal board at one end and an exposed conductor at the other end, and one end of the lead wire is connected to the connector board. An inspection jig for a printed wiring board, further comprising a relay connector to which a lead wire can be attached and detached at the other end.
  2. 2. The printed wiring board inspection jig according to claim 1, wherein the relay connector has a display for identifying a position of the connector terminal on the connector board.
JP04199142A 1992-07-02 1992-07-02 Inspection jig for printed wiring board Expired - Lifetime JP3134518B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04199142A JP3134518B2 (en) 1992-07-02 1992-07-02 Inspection jig for printed wiring board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04199142A JP3134518B2 (en) 1992-07-02 1992-07-02 Inspection jig for printed wiring board

Publications (2)

Publication Number Publication Date
JPH0618598A JPH0618598A (en) 1994-01-25
JP3134518B2 true JP3134518B2 (en) 2001-02-13

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ID=16402850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04199142A Expired - Lifetime JP3134518B2 (en) 1992-07-02 1992-07-02 Inspection jig for printed wiring board

Country Status (1)

Country Link
JP (1) JP3134518B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101930045A (en) * 2010-08-19 2010-12-29 黄道铭 Special on-off detection device of automobile window control switch connection terminal board

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100882512B1 (en) * 2007-04-25 2009-02-10 윌테크놀러지(주) Probe card
KR101329812B1 (en) * 2007-05-25 2013-11-15 주식회사 코리아 인스트루먼트 Probe assembly and probe card having the same
DE102009016181A1 (en) 2009-04-03 2010-10-14 Atg Luther & Maelzer Gmbh Contacting unit for a test device for testing printed circuit boards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101930045A (en) * 2010-08-19 2010-12-29 黄道铭 Special on-off detection device of automobile window control switch connection terminal board

Also Published As

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JPH0618598A (en) 1994-01-25

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