JP2002286779A - Continuity inspection jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily manufacturable continuity inspection jig capable of executing continuity inspection of a fine pattern, and its manufacturing method. SOLUTION: This continuity inspection jig comprises a contact pin 6, a wire 5 joined to the contact pin by solder or the like, and a support 1 for supporting the contact pin 6 and the wire 5. A wire support part 11 of the support comprises an elastic member such as rubber or the like. The contact pin is fixed on the wall surface of an insertion hole 10 formed in the support. The wire is inserted in the unfixed state to the insertion hole wall surface. The contact pin is preferably fixed on the support.

Description

DETAILED DESCRIPTION OF THE INVENTION 【Technical field】

The present invention relates to a continuity inspection jig for inspecting electrical continuity of a printed wiring board.

[0002]

2. Description of the Related Art A continuity inspection jig is an apparatus for inspecting the presence or absence of continuity by bringing a contact pin into contact with a wiring circuit of a printed wiring board. Conventionally, as such a continuity inspection jig, FIG.
(A) As shown in FIG. 5, an insulator 97 made of ceramic or resin, a contact pin 96, and an insulator 97
Guide hole 97 for inserting contact pin 96
0 and a compression coil spring 95 for urging the contact pin 96 in the guide hole 970 toward the wiring circuit 981. The compression coil spring 95 is inserted into the guide hole 970,
It is supported by a socket 94. As shown in FIG. 4B, the socket 94 is a coil spring or a pipe, and is soldered to the wire 93. The surface of the wire 93 is covered with an insulating protective film 939.

[0003] Contact pin 96, compression coil spring 9
5, the socket 94 and the wire 93 are in a conductive state. As shown in FIG. 5, at the tip of the contact pin 96,
When the wiring circuit 981 of the printed wiring board 98 is brought into contact,
As shown in FIG. 6, through these, the conduction state of the wiring circuit 981 is inspected by an electrical continuity measuring device provided at the end of the wire 93.

[0004]

However, in the above-mentioned conventional continuity inspection jig, as shown in FIG. 4B, since the wire 93 and the socket 94 are separate bodies, an operation for assembling them is required. You. Therefore, the manufacturing process of the continuity inspection jig becomes complicated. Also, in order to cope with recent fine patterning, the pitch of wiring circuits has been reduced. Therefore, it is necessary to narrow the pitch of the contact pins. However, in a conventional structure in which a socket is assembled to a wire, each component needs to be miniaturized, processing becomes difficult, and manufacturing costs increase.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a continuity inspection jig which is easy to manufacture and can perform continuity inspection of fine patterns.

[0006]

According to a first aspect of the present invention, there is provided a continuity inspection jig for inspecting electrical continuity of a printed wiring board, wherein the continuity inspection jig comprises: a contact pin; a wire joined to the contact pin; A contact pin and a support for supporting the wire. The wire support portion of the support for supporting the wire is made of an elastic member. The contact pin is inserted into an insertion hole provided in the support. The wire is fixed to the wall surface of the insertion hole, and the wire is inserted in a non-fixed state with respect to the wall surface of the insertion hole.

The continuity inspection jig of the present invention is an instrument for inspecting electrical continuity of a printed wiring board by bringing a contact pin into contact with an inspection site of the printed wiring board. Since the wire is directly connected to the contact pin, there is no need to provide a socket between the wire and the contact pin,
The operation of assembling the socket and the wire is not required, so that the production becomes easy and the production cost can be reduced. Further, the pitch of the contact pins can be narrowed, and the continuity test of the fine pattern can be performed.

Further, since the contact pin is fixed to the insertion hole, the elastic wire support is compressed in accordance with the movement of the contact pin. Therefore, the contact pins move upward according to the height of the wiring circuit. Therefore, the contact pins can be adjusted to an appropriate height. The wire is inserted in the insertion hole in a non-fixed state. Therefore, the wire does not hinder the compression of the wire support.

For fixing the contact pins in the pin insertion holes, for example, there is a method of bonding with an adhesive such as solder or thermosetting resin.

Preferably, the elastic member is made of at least one selected from the group consisting of rubber and resin. Thereby, the height of the contact pins can be appropriately adjusted according to the height of the wiring circuit.

It is preferable that the wire is soldered to the contact pin. Thereby, the wire can be easily joined to the contact pin.

[0012] It is preferable that the pin supporting portion for supporting the contact pin in the support is flexible. As a result, when inspecting a plurality of wiring circuits located at different heights, the pin support is distorted following the difference in the height of the wiring circuits, and the distortion is absorbed by the wire support on the pin support.
Therefore, the continuity inspection of a plurality of inspection parts having different heights can be performed in the same manner. As the flexible pin support, for example, rubber, resin, or the like can be used.

The contact pin is connected to one end of the wire as described above, while the other end of the wire is connected to a power supply or an electrical continuity measuring device. In inspecting the electrical continuity of the wiring circuit of the printed wiring board, a plurality of contact pins are arranged at measurement points of the wiring circuit.
Next, the continuity inspection jig is brought closer to the wiring circuit side, and the tip of the contact pin is brought into contact with the wiring circuit. The contact pin is adjusted to an appropriate height by a wire support portion made of an elastic member. Next, electricity is supplied to the wiring circuit through the contact pins to check whether or not normal electrical continuity is exhibited.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 A continuity inspection jig according to an embodiment of the present invention is shown in FIGS.
This will be described with reference to FIG. The continuity inspection jig 4 of this example is shown in FIG.
As shown in (a), the contact pin 6, a wire 5 joined to the contact pin 6, and a support 1 supporting the contact pin 6 and the wire 5 are provided. The contact pins 6 and the wires 5 are inserted into insertion holes 10 provided in the support 1.

The support 1 is provided with a wire supporting portion 11 for supporting the wire 5, which is made of rubber as an elastic member. The contact pin 6 is fixed to the support 1 in the insertion hole 10. The wire 5 is inserted into the wall of the insertion hole 10 in a non-fixed state.

The contact pin 6 is fixed to the insertion hole 10 with the pin tip of the contact pin 6 exposed. The contact pin 6 and the insertion hole 10 are bonded with an adhesive. As shown in FIG. 1B, the contact pin joint 51 of the wire 5 is joined to the head 62 of the contact pin 6 by solder 56. The insertion hole 10 slidably supports the wire 5.

As shown in FIG. 1B, the contact pin 6 comprises a leg 61 fixed to the insertion hole 10 and a head 62 to which the wire 5 is joined. The tip of the leg 61 protrudes from the insertion hole 10 to make contact with the inspection part 81 of the printed wiring board 8.

A pin support 12 made of a flexible material is provided on the printed wiring board 8 side of the support 1, and a coating 13 made of a hard material is provided on the opposite side. The pin supporting portion 12 is made of a flexible material such as rubber or resin, and the covering material 13 is a hard material such as a metal such as copper or iron, 42 alloy, Kovar, or SUS.
Is used. The thickness of the pin support 12, the free wire support 11, and the covering 13 is 2 cm and 7 c, respectively.
m, 5 cm. The diameter of the wire 5 is 0.05 mm, the diameter of the leg portion 61 of the contact pins 6 0.1 mm
It is. In the insertion hole 10, the diameters of the holes 110, 120, and 130 located in the wire support 11, the pin support 12, and the covering 13, respectively, are 0.2 mm and 0.1 mm.
5 mm and 0.15 mm. The wire 5 is made of a metal material, and is covered with an insulating protective film 59 such as a resin. As shown in FIG. 2, the electrical continuity measuring device 7 is connected to the wire 5 on the side opposite to the contact pin joint 51.

Next, a method of manufacturing the continuity inspection jig of this embodiment will be described. First, as shown in FIG. 1A, holes 120, 110, and 110 are formed in a flexible member for forming the pin support portion 12, an elastic member for forming the wire support portion 11, and a hard material for forming the covering portion 13, respectively. 130 is drilled.

Next, the contact pins 6 are moved to the pin support portions 1.
2 is inserted into the hole 120 formed in the forming flexible member. At this time, the leg 61 of the contact pin 6 and the hole 120
Are bonded with an adhesive.

Next, an elastic member for forming the wire support 11 is bonded to the flexible member for forming the pin support 12.
Further, a hard material for forming a covering portion is bonded to the elastic member.
As a result, the support 1 having the covering portion 13 and the pin supporting portion 12 on the upper and lower surfaces of the wire supporting portion 11 is formed.

Next, the wire 3 covered with the insulating protective film 39 is prepared, and the tip of the wire 3 is connected to the insulating protective film 39.
To expose. Solder 56 is attached to the tip of wire 5 and inserted into support hole 10. Next, the support 1 is heated to melt the solder 56 attached to the wire 5 therein. As a result, the head 62 of the contact pin 6
Then, the tip of the wire 56 is joined by the solder 56. Thus, the continuity inspection jig 4 of the present example is obtained.

A method for conducting a continuity test on a printed wiring board using the continuity test jig 4 of this embodiment will be described. Figure 1
As shown in (a), the contact pins 6 are arranged on the inspection site 81 in the wiring circuit of the printed wiring board 8. Next, the contact pin 6 is brought close to the inspection site 81, and the tip of the contact pin 6 is brought into contact with the inspection site 81. As shown in FIG. 2, the contact pin 6 moves upward according to the height of the inspection part 81 by the elastic force of the wire support part 11, and the pin tip contacts with an appropriate pressing force.

Next, electricity is supplied to the wiring circuit of the printed wiring board 8 through the contact pins 6. Disconnection in the wiring circuit,
If there is no abnormality such as a short circuit, the electrical continuity measuring device 7
, Normal electrical conduction is detected. If an abnormality has occurred, no current flows or an abnormal current value is detected.

In the continuity inspection jig 4 of this embodiment, the wire 5 is directly joined to the contact pin 6. This eliminates the need for the work of assembling the socket between the wire 5 and the contact pin 6 as in the conventional case, thereby facilitating the manufacture and reducing the manufacturing cost.
Further, the pitch of the contact pins 6 can be narrowed, and a continuity test between fine patterns can be performed.

When the tip of the contact pin 6 is brought into contact with the inspection part 81, the contact pin 6 is pushed by the inspection part 81 and tends to move upward according to the height of the inspection part 81. Since the contact pin 6 is fixed to the support 1, the upward pressing force of the contact pin 6 compresses the wire support 11 of the support 1. Therefore, according to the continuity inspection jig 4 of this example, the contact pins 6 can be adjusted to an appropriate height according to the height of the inspection site 81.

As shown in FIG. 3, when the heights of the plurality of inspection parts 81 are different, the upward movement amounts of the contact pins 6 are different. In this example, the pin support 1
Since 2 is flexible, the flexible pin support 12 supporting the contact pins 6 is distorted in accordance with the difference in upward force of each contact pin 6. This distortion is absorbed by the elastic wire support member 11 thereon. Therefore, even if the heights of the plurality of inspection parts 81 are different, the contact pins 6 can be adjusted to an appropriate height according to the height of the inspection parts 81. As described above, according to the continuity inspection jig 4 of the present embodiment, the continuity inspection of a plurality of inspection parts having different heights can be performed in the same manner.

[0028]

According to the present invention, it is possible to provide a continuity inspection jig which can be easily manufactured and can conduct a continuity inspection of a fine pattern.

[Brief description of the drawings]

FIG. 1A is an explanatory view of a continuity inspection jig according to a first embodiment, and FIG. 1B is an explanatory view of a bonding method between a wire and a contact pin.

FIG. 2 is an explanatory view showing a method for inspecting the continuity of a printed wiring board using a continuity inspection jig in the first embodiment.

FIG. 3 is an explanatory diagram of a contact pin and a support when a wiring circuit is in contact with the first embodiment.

4A is a cross-sectional explanatory view of a continuity inspection jig of a conventional example, and FIG. 4B is an explanatory view showing a socket provided on a wire.

FIG. 5 is an explanatory view of a method for inspecting the continuity of a printed wiring board using a continuity inspection jig in a conventional example.

FIG. 6 is an explanatory view of a continuity inspection jig of a printed wiring board in a conventional example.

[Explanation of symbols]

 1. . . Support, 10. . . Insertion hole, 11. . . Wire support, 110,120,130. . . Hole, 12. . . 12. pin support, . . Coating part, 4. . . 4. Continuity inspection jig, . . Wire, 51. . . Contact pin joint, 56. . . 5. solder, . . 7. contact pin; . . Printed wiring board, 81. . . Inspection site,

Claims (3)

[Claims] 1. A continuity inspection jig for inspecting electrical continuity of a printed wiring board, wherein the continuity inspection jig supports a contact pin, a wire connected to the contact pin, and the contact pin and the wire. A wire support portion for supporting the wire in the support member is made of an elastic member, and the contact pin is inserted into an insertion hole provided in the support member, and the contact pin is inserted into a wall of the insertion hole. A continuity inspection jig, which is fixed, and wherein the wire is inserted in a non-fixed state with respect to the wall surface of the insertion hole. 2. The continuity inspection jig according to claim 1, wherein said elastic member is made of at least one selected from the group consisting of rubber and resin. 3. A continuity inspection jig according to claim 1, wherein said wire is soldered to said contact pin.