JPH05302938A - Inspection jig for printed wiring board - Google Patents

Abstract

PURPOSE:To obtain an inspection jig for a printed wiring board, which can achieve the small diameter of the contact needle of a probe and the prevention of damages, and wherein the formation of a guide hole is easy and the electric contact between the other end of the probe and an inspection device is easy. CONSTITUTION:This jig comprises contact pins 3, which are slidably mounted on a guide plate 8, and probes 1, which are fixed to a pin board 88. The probe 1 has the contact needle. The contact needle is brought into contact with the head part of the contact pin 3. The tip of the contact pin 3 is brought into contact with a wiring circuit 71, and the inspection is performed. A relay terminal board 40 is provided between the probe 1 and an inspecting device 18. A connector terminal 41 of the relay terminal board 40 and a probe terminal 16 are brought into contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test jig for a printed wiring board, in particular, a structure around a probe that exhibits an excellent effect on the inspection of a high-density wiring circuit, and an inspection device having an electrical judgment circuit. The present invention relates to a terminal structure that facilitates connection with.

[0002]

2. Description of the Related Art As a method of 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 No. 56-11060). As a conventional inspection jig for a printed wiring board, as shown in FIGS. 9 and 10, a stylus 92 of a probe 9 is brought into contact with a wiring circuit 75 of the printed wiring board 7. Is used to inspect 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 mounted by penetrating both. As shown in FIG. 10, the probe 9 has a pipe-shaped socket 91 and a stylus 92.
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 provided in the guide hole 8 of the guide plate 8.
It is inserted in 1 so that it can move forward and backward. And the stylus 92
Has a plunger 920 on top of it. The plunger 920 is mounted in the inner cavity of the tube 25 so as to be movable back and forth via a spring spring (not shown).

The upper end of the probe 9 is electrically connected to an inspection device for detecting electrical continuity. The guide plate 8 has a recess 82 for disposing the lower end of the socket 91. Further, the probe 9 is provided at a position corresponding to the wiring circuit 75 of the printed wiring board 7 as the inspection object. Further, the guide plate 8 and the pin board 88 are 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.
Also, the pin board 88 is lowered and raised, and the stylus 92 of the probe 9 is brought into contact with the stylus pad (hereinafter omitted) of the wiring circuit 75. At this time, when the wiring circuit 75 is not broken or short-circuited, normal electrical conduction is obtained. As a result, the quality of each wiring circuit 75 can be determined.

Further, in the above, the tip 921 of the stylus 92 is
When contacting the wiring circuit 75, the stylus 92 retracts toward the socket 91 side along the guide hole 81 of the guide plate 8,
The plunger 920 penetrates into the socket 91.
This is to protect the tip 921 of the stylus 92.
In FIG. 9, reference numerals 87 and 886 are knock pins 8.
91 insertion holes, 871 and 885 are positioning pins 892.
It is the insertion hole.

[0008]

[Problems to be Solved] 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 increased, and the pitch of the pads at the ends of the wiring circuits has become narrower.
For example, this pitch is about 0.5 mm in the past, but it is as narrow as 0.3 mm in a high-density wiring circuit.

Therefore, in order to deal with this, the probe 9
Since it is necessary to narrow the array pitch of, it is necessary to reduce the size (diameter) of the probe itself. Also in the probe 9 currently used, the outer diameter of the socket 91 is about 1 mm, and the diameter of the probe 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 in the inspection.
Abutting against. Further, at the time of contact, the stylus 92 slides in the guide hole 81 of the guide plate 8 and retracts as described above. Then, after the inspection, the stylus 92 is made to project again to its original position by the spring spring provided in the socket 91. Therefore, the stylus 92 slides in the guide hole 81 at each inspection.

Therefore, the stylus 92 is easily worn. Further, if the diameter of the guide hole 81 is increased to prevent this wear, the clearance between the stylus 92 and the stylus 92 becomes large, and the tip 921 of the stylus 92 may rattle, resulting in defective inspection. Further, the stylus 92 is inserted into a socket 91 fixed to the pin board 88. Therefore, the socket 91, the stylus 92, and the guide hole 81 must have the same axis. 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 shaft cores coincide with each other.

The stylus 92 slides coaxially in the socket 91 and the guide hole 81, and its tip 921 directly contacts the wiring circuit 75. It is easily damaged. As described above, in the conventional inspection jig, as the wiring circuit becomes higher in density, there are problems particularly in the thinning and damage of the probe stylus 92 of the probe, the drilling accuracy of the guide hole 81, and the like.

On the other hand, the other end of the probe must be electrically connected to a tester having an electrical judgment circuit by a lead wire or the like. That is, the other end of the probe needs to have a structure for taking out an electric signal by a mechanical welding method such as mechanical contact with a connector or soldering or the like. And in order to carry out it efficiently, the other end (hereinafter “the other end”) which is the electrical outlet of the probe
Abbreviation) has a certain interval or more,
Furthermore, it is desirable to have a constant array in addition to a constant spacing.

On the other hand, since the tip of the stylus of the probe must be brought into contact with the pad, the placement of the stylus must be completely different for each printed wiring board to be inspected. Further, as the wiring circuit becomes higher in density, the distance between the stylus becomes very small, and it becomes more and more difficult to electrically connect the other end of the probe to the lead wire for connecting to the inspection device.

On the other hand, if the arrangement of the other end of the probe is made different from the arrangement of the stylus and electrical connection is facilitated, the above-mentioned axis may be perpendicular to the guide plate and the pin board. It becomes impossible, and it becomes extremely difficult to process guide holes and through holes. In view of the above-mentioned conventional problems, the present invention can cope with the probe diameter reduction and damage prevention,
Another object of the present invention is to provide an inspection jig for a printed wiring board, which facilitates the formation of the guide hole and facilitates the electrical connection of the other end of the probe.

[0016]

The present invention is an inspection jig for inspecting a wiring circuit in a printed wiring board according to the presence or absence of electrical continuity, the inspection jig including 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 stylus for making contact with the contact pin, and the contact pin is attached to the guide plate so as to be movable back and forth, and a probe terminal is provided at the other end of the probe. And a relay terminal board for electrically connecting the probe terminal and the inspection device to each other, and the relay terminal board has a connector terminal for contacting with the probe terminal,
The probe terminal and the connector terminal are in a positional relationship facing each other, which is an inspection jig for a printed wiring board.

One of the most remarkable things in the present invention is to divide the probe of the above-mentioned conventional example into two sets, so to speak,
The contact pin and the probe are configured, and the contact pin is brought into contact with the wiring circuit, while the probe stylus is brought into contact with the contact pin.

That is, a contact pin is attached to a guide plate facing the printed wiring board so as to be able to move forward and backward, and a probe is fixed to the pin board facing the guide plate. And
As an example of the probe, it is preferable that the probe has a structure in which a stylus is housed in a socket so as to be elastically movable back and forth.

Thus, when the probe is brought into contact with the contact pin, the stylus advances and retreats to absorb the abutting force, thereby preventing damage to the probe tip. As described above, as a means for incorporating the stylus in the socket, there is a means for elastically holding the stylus in the tube and mounting these in the socket (see FIGS. 4 and 5). Also, in the socket,
There is also a means for directly inserting the stylus and elastically holding it.
There is a spring spring as the elastically holding means. Further, the probe may simply connect the contact pin and the connector terminal.

Further, the contact pin is mounted in the guide hole of the guide plate so as to be able to move back and forth. The contact pin has a tip that abuts on the wiring circuit, and an abutting portion that abuts the stylus on the opposite side. The abutting portion preferably has a head portion having a diameter larger than that of the main body of the contact pin. Further, it is preferable to provide a curved surface concave portion at the contact portion to ensure contact of the stylus (see FIG. 6).

In addition, in the inspection jig of the present invention, the guide plate and the pin board are provided with the contact pins and the probe having the above-mentioned configuration according to the present invention, and in order to inspect a portion where the wiring circuit of the printed wiring board is not high density. It is also possible to install a probe pin with a relatively large diameter similar to the above-mentioned conventional example.

Another thing to be noticed in the present invention is that the other end of the probe is provided with a probe terminal having a terminal structure, and the probe terminal and the inspector are electrically relay-connected to each other. The relay terminal board is provided, and further, the relay terminal board has connector terminals to be connected to the probe terminals, and the probe terminals and the connector terminals have a positional relationship facing each other (FIG. 1). reference). The probe terminal, which is the other end of the probe (the end opposite to the stylus), and the connector terminal of the relay terminal board have a structure that ensures electrical conduction by mechanical contact with each other, such as a male connector. It is also possible to have a terminal shape that forms a female relationship.

Further, it is preferable that the connector terminal side is elastically supported so as to be able to move forward and backward so as to ensure a constant contact pressure in the coupled state of the probe terminal and the connector terminal. Further, the probe terminal and the connector terminal are arranged so as to face each other spatially. The arrangement of both terminals is an arrangement that facilitates the connection of the probe terminal and the connector terminal, and is different from the contact pin arrangement interval. Furthermore, the arrangement of connector terminals, that is, the arrangement of probe terminals is
It is preferable that the contact pins be arranged at a constant interval regardless of the arrangement of the contact pins, that is, the type of the printed wiring board.

For this reason, the probe has a structure in which the axis of the probe is not necessarily perpendicular to the guide plate and the pin board, and has an inclination corresponding to the position of the contact pin and the position of the connector terminal (FIG. 1). As a result, both can always be designed in a fixed positional relationship, and the relay terminal board provided with the connector terminals can be given general versatility, resulting in a low cost. The relay terminal board and the inspection device can be electrically connected by a lead wire or the like.

[0025]

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

Therefore, the contact pin and the probe can move back and forth independently of each other. Therefore, it is not necessary to precisely match the three axes of the probe provided on the pin board, the stylus thereof, and the guide hole of the guide plate through which the contact pin advances and retracts.

Therefore, the drilling of the axial center of the guide hole is
It suffices that the holes are formed in conformity with the wiring circuit of the printed wiring board, high precision is not required as in the conventional case, and the holes can be easily formed. Further, since it is sufficient that only the contact pin can be smoothly slid in the guide hole, it is possible to provide the guide hole with a small diameter and reduce the rattling of the contact pin. Further, when the contact pin is worn, it can be replaced easily and at low cost.

Since the probe is not directly brought into contact with the wiring circuit, it is not damaged as in the conventional case.
Further, the contact pin directly contacts the wiring circuit and slides in the guide hole, but since the contact pin does not move back and forth in the hole of the pin board as in the conventional case, it is not damaged by axial misalignment or the like.

Further, as described above, since the contact pin and the probe are separately configured so as to prevent the forward and backward movement of both of them during the inspection, it is possible to reduce the diameter of both. Therefore, it is easy to inspect high-density wiring circuits. Moreover, the probe is elastically mounted in a socket having a small inner diameter of 0.1 to 0.3 mm so as to be able to move forward and backward. Therefore, although it is an expensive precision part, it is not damaged as described above, so the cost of the inspection jig is also low. Therefore, according to the present invention, it is possible to cope with the thinning and damage prevention of the probe stylus of the probe, and it is easy to form the guide hole.

Further, in the present invention, a relay terminal board is provided between the probe terminal and the inspector, and the relay terminal board is provided with a connector terminal for contacting the probe terminal. Therefore, it is not necessary to match the axes of the probe stylus to be brought into contact with the connector pin and the probe terminal, and the probe can be bent (see FIG. 1).

Therefore, even if the connector pins that come into contact with the wiring circuit of the printed wiring board are densely packed and the stylus is densely packed with it, it is not necessary to densely arrange the probe terminals.
Therefore, the positions of the probe terminal and the connector terminal can be arranged with equal versatility, for example. In addition, the area of the pinboard on the inspector side can be made larger than the area of the guide plate side.

Therefore, the terminal interval of the probe terminals is not restricted by the contact pin interval, the terminal arrangement of the probe terminals and the connector terminals can be standardized, and the electrical contact between them becomes easy. In addition, the standard structure of the relay terminal board itself is possible.

Therefore, according to the present invention, it is possible to reduce the diameter and prevent damage of the contact pin and the probe, facilitate the drilling of the guide hole, and make electrical contact between the other end of the probe and the inspection device. An inspection jig for a printed wiring board that can be easily provided can be provided.

[0034]

EXAMPLE An inspection jig for a printed wiring board according to an example of the present invention will be described with reference to FIGS. The whole structure of the present embodiment is such that the contact pin 3 is brought into contact with the wiring circuit 71, and the detection unit for transmitting the electrically conductive state of the wiring circuit to the other end 16 of the probe 1 and the other end 16 of the probe are provided.
A description will be given separately for a relay section that transmits the electrical conduction state to the inspection device 18 via the relay terminal board 40.

First, the detection unit in this embodiment is shown in FIG.
As shown in FIG. 3, it comprises a guide plate 8, a pin board 88, a contact pin 3 for making contact with the wiring circuit 71, and a probe 1 having a stylus 2 for making contact with the contact pin 3. .. In addition, the above contact pin 3
Is attached to the guide plate 8 so as to be able to move forward and backward, and the stylus 2 is built in the socket 11 of the probe 1 so as to be elastically movable forward and backward.

The wiring circuits 71 are arranged in high density on the printed wiring board 7. In the inspection jig of this example, the same probe 9 as the conventional one is attached to inspect the wiring circuit 75 having a large arrangement pitch. The guide plate 8 and the pin board 88 are detachably and integrally coupled by a knock pin 891 as in the conventional case. The guide plate 8 is shown in FIGS.
As shown in FIG. 3, the contact pin 3 has a large number of guide holes 85 for mounting it so that it can move forward and backward, and an opening groove 86.

Further, the pin board 88 has a through hole 882 for inserting and fixing the socket 11 of the probe 1 as shown in FIGS. Further, the socket 11 has through holes 8 of the intermediate pin board 888 and the other end pin board 889.
82 is inserted. The other end pin board 889 supports the other end 16 of the probe 1, as described later. The contact pin 3 is, as shown in FIGS. 2, 3 and 6,
It has a tip 31 for contacting the wiring circuit 71 and a head 32 as an abutting part for contacting the stylus 2.
Further, the head 32 has a curved concave portion 321 (FIG. 6).

As shown in FIGS. 2 to 5, the probe 1 comprises a socket 11 and a stylus 2 which is inserted into the socket 11 so as to be able to move forward and backward. As shown in FIG. 4, the socket 11 is a hollow pipe and has a flange 110 on the insertion side of the stylus 2.

On the other hand, the stylus 2 is mounted in the tube 25 so as to be movable back and forth, 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, and a thin connecting portion 21 between the two. Then, the spring 25 is first put in the tube 25, and then the stylus 2 is inserted. Then, the tube 25 is caulked at the outer side of the connecting portion 21 of the stylus to form the caulked portion 251. .

As a result, the stylus 2 is elastically mounted in the tube 25 by the spring spring 23 so as to be movable back and forth. The reference numeral 252 indicates the tube 25.
Is a caulking portion provided at the upper end of the spring for contacting the upper end of the spring spring 23. Then, the stylus 2 configured as described above 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 has the caulked portion 113 of the socket 11.
Abut.

Further, the probe 1 constructed as described above
As shown in FIGS. 1 to 3, the through holes 88 of the pin board 88, the intermediate pin board 888, and the other end pin board 889 are formed.
Insert into 2 and fix. The stylus 2 of the probe 1 is in a position facing the contact pin 3, while the probe terminal 16 is in a position facing the connector terminal 41 of the relay terminal board 40. Further, the spacing of the stylus 2 is the same as that of the contact pin 3. However, probe terminal 1
The interval of 6 is a constant interval facing the connector terminal 41 regardless of that of the contact pin. Therefore, the probes 1 are arranged obliquely as shown in FIG.

Next, the function and effect of the detection section will be described. That is, when inspecting the quality of the wiring circuit 71 on the printed wiring board 7 by means of electrical continuity, FIG.
, The guide plate 8 and the pin board 88 are brought closer to each wiring circuit 71 in the vertical direction,
To face the printed wiring board 7. At this time, before the contact between the two, the contact pin 3 is in a state of protruding from the guide plate 8 as shown in FIG. Further, the head 32 of the contact pin 3 is in contact with the tip 20 of the stylus 2 of the probe 1.

When the guide plate 8 contacts the printed wiring board 7 and the tip 31 of the contact pin 3 contacts 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 is located at substantially the same position as the lower surface of the guide plate 8. At this time, the head 32 of the contact pin 3 is
The stylus 2 is pressed toward the probe 1. Therefore, the stylus 2 enters the tube 25 against the biasing force of the spring spring 23 (FIG. 5).

Thus, the tip 31 of the contact pin 3
However, after contacting the wiring circuit 71, the probe terminal 16 of the probe 1, the relay terminal board 40 described later, and the lead wire 15
A current is passed through the probe 1, the stylus 2, and the contact pin 3 to determine whether the wiring circuit 71 is good or bad (FIG. 1). After the inspection, the guide plate 8 and the like are moved away from the printed wiring board 7. Therefore, contact pin 3
2 by the biasing force of the spring spring 23 of the stylus 2.
As shown in.

The conventional probe 9 shown in FIG.
The operation is similar to that of the conventional example. As described above, in the inspection jig of this example, the contact pin 3 is mounted on the guide plate 8 so as to be movable back and forth, and the probe 1 is fixed to the pin board 88 and the stylus 2 is movable so as to move back and forth inside the probe 1. I am wearing it.

Therefore, the forward / backward movement of the contact pin 3 and the forward / backward movement of the stylus are independent of each other. 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 through which the stylus advances and retracts are matched with high accuracy. You don't have to let me. That is, in this example, even if the axial center of the contact pin 3 and the axial center of the stylus 2 are misaligned, there is no problem as long as they are in contact with each other (FIGS. 2 and 3).

Therefore, the guide hole 85 may be formed so as to coincide with the wiring circuit of the printed wiring board. Therefore, high precision is not required for the drilling accuracy with respect to the shaft center 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 be able to smoothly slide the contact pin 3, it can be provided with a small diameter and is free from rattling.

Further, since the probe 1 does not directly contact the stylus 2 with the wiring circuit 71, it is not damaged as in the conventional case. Further, the contact pin 3 directly abuts on the wiring circuit 71 and slides in the guide hole 85. However, like the stylus of the conventional probe, the contact pin 3 must be linearly advanced and retracted both in the guide hole 85 and the probe socket. There is no. Therefore, there is no damage due to axial misalignment between the two.

Further, since the contact pin 3 and the probe 1 are separately configured so as not to cause an unreasonable increase / decrease in the both during the inspection, both of them can be thinned. 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.
mm, inner diameter is 0.27 mm, outer diameter of stylus 2 is 0.15 m
m. In addition, in the contact pin 3 of this example,
Since the curved portion 321 is provided on the head 32, the head 3
The tip 20 of the stylus 2 can be reliably brought into contact with the needle 2.

Next, regarding the relay section in this embodiment,
The description will be made mainly with reference to FIGS. The relay unit of the present embodiment has a probe terminal 16 at the other end of the probe 1 (an end portion without a stylus), and the probe terminal 16 and the inspection device 18 are provided.
A relay terminal board 4 for electrically connecting the two with
Has 0. The relay terminal board has connector terminals 41 that are brought into contact with the probe terminals 16, and the probe terminals 16 and the connector terminals 41 are in a positional relationship of facing each other.

The probe terminal 16 has a fixed predetermined arrangement and coordinate position that does not depend on the arrangement state of the wiring circuit 75. The same applies to the connector terminal 41 facing the probe terminal 16. Further, the probe terminal 16 and the connector terminal 41 are shaped to be complementary to each other in order to obtain stable electrical conduction when they are brought into contact with each other. Further, the connector terminal 16 is a spring connector having elasticity so that it can move forward and backward, like the stylus 2. The lead wire 15 is connected between the connector terminal 41 and the inspection device 18.

With such a structure, the structure of the relay terminal board 40 can be a constant standard structure which does not need to be changed even if the pattern in the wiring circuit 75 of the printed wiring board 7 is changed. These can be realized by dividing the function of the conventional probe into the contact pin 3 and the probe 1.

With this structure, at the time of the inspection, the relay terminal board 40 is pressed toward the other end pin board 889 so that the probe terminal 16 and the connector terminal 41 are brought into contact with each other all at once. As a result, the electrical connection between the probe 1 and the inspecting device 18 becomes possible via the relay terminal board 40. That is, when the printed wiring board 7 to be inspected is changed, it suffices to replace the probe portion corresponding to the printed wiring board 7 (the probe 1, the guide plate 8 and the pin board 889 are integrated). , Probe 1 and inspector 18
It is free from the electric connection work between and. In this case, the electrical connection between the probe terminal 16 and the connector terminal 41 can be made more reliable by using the connector terminal 41 as a spring connector.

As described above, according to this example, the probe 1
It is possible to reduce the diameter of the stylus 2 and prevent damage, and it is possible to easily form the guide hole 85. Moreover, electrical contact between the probe terminal 16 at the other end of the probe 1 and the inspection device 18 can be facilitated.

[Brief description of drawings]

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

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

FIG. 3 is a cross-sectional view around contact pins 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 of the first embodiment.

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

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

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

8 is a cross-sectional view taken along the line AA of FIG.

FIG. 9 is an overall explanatory view of an inspection jig in a conventional example.

FIG. 10 is an explanatory view around the probe of the inspection jig in the conventional example.

[Explanation of symbols]

 1. ． ． Probe, 11. ． ． Socket, 15. ． ． Lead wire, 16. ． ． Probe terminal, 18. ． ． Inspector, 2. ． ． Stylus, 23. ． ． Spring, 25. ． ． Tube, 3. ． ． Contact pin, 31. ． ． Tip, 40. ． ． Relay terminal board, 41. ． ． Connector terminal, 7. ． ． Printed wiring board, 71. ． ． High-density pitch wiring circuit, 75. ． ． 7. Wiring circuit with normal wiring pitch, 8. ． ． Guide plate, 85. ． ． Guide hole, 88. ． ． Pin board,

Claims (1)

[Claims] 1. An inspection jig for inspecting a wiring circuit in a printed wiring board according to the presence or absence of electrical continuity, the inspection jig including a guide plate, a pin board, and a contact for contacting the wiring circuit. The probe comprises a pin and a probe having a stylus for making contact with the contact pin, and the contact pin is attached to the guide plate so as to be movable back and forth, and has a probe terminal at the other end of the probe. Between the terminal and the inspector, there is a relay terminal board for electrically connecting the two to each other, the relay terminal board has a connector terminal for contacting with the probe terminal, and the probe terminal and the connector terminal are mutually connected. An inspection jig for printed wiring boards, which is in a positional relationship of facing each other.