JPH08181403A - Jig for connecting flexible printed wiring board - Google Patents

Abstract

PURPOSE: To provide a connection jig capable of coming into contact with a flexile printed board with simple operations and testing electronic circuits mounted to the flexible printed board or another printed wiring board. CONSTITUTION: A pressure contact force is given to both of a pair of insulation plates 34, 35 by spring members 31, 32 of a clip structure, and further a contact pin 36C is elastically projected and embedded on one of junction surfaces of the insulation plates, and a groove 37 for stipulating a position of a flexible printed wiring board is formed in the other insulation plate 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for testing the operation of an electronic circuit device having a structure in which an electronic circuit mounted on a printed wiring board is connected to another printed wiring board via a flexible printed wiring board. The present invention relates to a connection jig for flexible printed wiring boards that can be used for

[0002]

2. Description of the Related Art As a recent tendency, a structure is often adopted in which electronic circuit devices mounted on a printed wiring board are connected to each other by using a flexible printed wiring board instead of a flexible flat cable. By using the flexible printed wiring board, the wiring pattern pitch can be narrowed and a large number of circuits can be connected by the narrow flexible printed wiring board.

When the electronic circuit device mounted on the printed wiring board is tested alone, the flexible printed wiring board connected to the printed wiring board is connected to a measuring instrument or the like to perform an operation test. FIG. 5 shows a conventional connecting jig for a flexible printed wiring board. Reference numeral 10 in the figure shows a connecting jig for a flexible printed wiring board (hereinafter simply referred to as a connecting jig). The conventional connecting jig 10 is composed of a connector 11 for a flexible printed wiring board which is generally commercially available and a printed wiring board 12 for converting the terminal pitch of the connector 11 into a wide pitch. The flexible printed wiring board connector 11 has a groove 11A for receiving the flexible printed wiring board 21 to be connected, and a lock piece 11B mounted in the groove 11A so as to be movable back and forth, and is flexible to be connected. When the lock piece 11B is pushed into the groove 11A with the printed wiring board 21 received in the groove 11A, the contact portion exposed at the end portion of the flexible printed wiring board 21 becomes the contact portion of the connector 11. Pressed and maintained in contact.

The terminals 11C of the connector 11 are arranged at an arrangement pitch substantially equal to the arrangement pitch of the wiring conductors of the flexible printed wiring board 21. Therefore, the arrangement pitch is, for example, about 1 mm pitch, and therefore the lead wire 13 cannot be directly soldered and connected to the terminal 11C. For this purpose, a printed wiring board 12 for pitch conversion is prepared,
The printed wiring board 12 converts the pitch into a solderable pitch and connects the lead wires 13 to the connector 11.
Reference numeral 20 in the drawing denotes a printed wiring board on which an electronic circuit device is mounted. The lead wire 13 is connected to a measuring device (not particularly shown) that tests the operation of the electronic circuit device mounted on the printed wiring board 20.

[0005]

[Problems to be Solved by the Invention] A conventional connecting jig 10
Requires a special printed wiring board 12 for pitch conversion, which is expensive. Further, there is a drawback that the work of connecting the flexible printed wiring board 21 to the connector 11 is troublesome. In particular, since the lock piece 11B must be removed and inserted, the wear is severe and the rate of breakage during daily use is high.

An object of the present invention is to provide a connecting jig which can be easily connected to a flexible printed wiring board and which is still highly durable.

[0007]

According to the present invention, a pair of insulating plates elastically biased in a direction in which they are pressed against each other by a spring member having a clip structure and one of the pair of insulating plates are planted.
A probe pin elastically contacting a contact portion of the flexible printed wiring board sandwiched between the pair of insulating plates, and a groove formed on the other insulating plate to define the position of the sandwiched flexible printed wiring board, One end side is connected to the probe pin, and the other end side is connected to a cable to form a connection jig.

According to the structure of the present invention, since the insulating plates are biased to each other in the pressure contact direction by the spring material having the clip structure, the work of sandwiching the flexible printed wiring board between the insulating plates can be easily performed. By inserting the flexible printed wiring board into the groove formed in the insulating plate, the position of the flexible printed wiring board is defined and the probe pin can be brought into contact with the contact portion of the flexible printed wiring board. it can. Therefore, there is an advantage that the connection work can be easily performed.

Since the flexible printed wiring board is sandwiched between the pair of insulating plates by the clip structure, there is no wear portion. Therefore, a highly durable connecting jig can be provided.

[0010]

1 to 4 show an embodiment of a connecting jig according to the present invention. Reference numerals 31 and 32 in the figure denote a pair of spring members.
The pair of spring members 31 and 32 are welded and joined at one end side 33, and the other ends receive a biasing force in a direction in which they are pressed against each other to form a clip structure.

Insulating plates 34 and 35 are attached to the end portions to which a biasing force is applied in a direction in which they are pressed against each other. Insulation plate 3
The probe pin 36 is implanted in one of the pins 4, 35. This probe pin 36 has a cylindrical conductive tube 36A as shown in FIG.
A spring 36B mounted inside the tubular conductive tube 36A, and a contact pin 36C to which a biasing force is applied in the protruding direction by the spring 36B. The cylindrical conductive tube 36A is fitted into and supported by a hole formed in the insulating plate 34, and the contact pin 36C is supported in a state of elastically projecting toward the joint surface with the other insulating plate 35.

A groove 37 is formed on the surface of the other insulating plate 35 which is joined to the insulating plate 34. By inserting the flexible printed wiring board 21 into the groove 37, the contact 21A (see FIG. 2) formed on the flexible printed wiring board 21 and the probe pin 36 are aligned with each other. For example, a flat cable 38 is attached to the probe pin 36.
And a connector 39 for connecting to a measuring instrument or the like is connected to the other end of the flat cable 38.

Therefore, by connecting the connecting connector 39 to a measuring instrument or the like, the connecting jig can be connected to the measuring instrument.

[0014]

As described above, according to the present invention, the bending positions A and B formed in the centers of the spring members 31 and 32 (see FIG. 1).
When the insulating plates 34 and 35 are pressed, the insulating plates 34 and 35 are moved in directions away from each other, and a gap is generated between the insulating plates 34 and 35. Flexible printed wiring board 2 to be connected in this gap
1 may be inserted and engaged with the groove 37. By engaging the flexible printed wiring board 21 with the groove 37, the flexible printed wiring board 21 is positioned, and the probe pin 36 is aligned with the contact 21A formed in the flexible printed wiring board 21. To be done. Therefore, the insulating plates 34 and 35
The contact pins 36C of the probe pins 36 come into contact with the contacts 21A formed on the flexible printed wiring board 21 by pressing the springs 31 and 32 against each other by the spring force of the spring members 31 and 32.

Therefore, the work of connecting the flexible printed wiring board 21 to the connecting jig is simple, and many electronic circuit devices can be tested in a short time. In addition, since there is no part to be worn, it is advantageous in that it is rich in durability and can be stably used for a long period of time.

[Brief description of drawings]

FIG. 1 is a side view for explaining an example of the configuration of a connecting jig according to the present invention.

FIG. 2 is a plan view for explaining an example of the configuration of a connecting jig according to the present invention.

FIG. 3 is an enlarged cross-sectional view for explaining a configuration of a main part of the present invention.

FIG. 4 is an enlarged sectional view for explaining the structure of the probe pin used in the present invention.

FIG. 5 is a plan view for explaining a conventional technique.

[Explanation of symbols]

 21 flexible printed wiring board 31, 32 pair of spring members 34, 35 insulating plate 36 probe pin 37 groove 38 flat cable 39 connector for connection

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location H05K 1/11 C 7511-4E

Claims (1)

[Claims] 1. A. First Embodiment A pair of spring members having one end coupled to each other and a biasing force applied in a direction in which the other ends are pressed against each other; A pair of insulating plates attached to the ends of the pair of spring members and pressed against each other; A probe pin that is planted on one side of the insulating plate, is elastically projectingly biased in a direction orthogonal to the plate surface of the insulating plate, and elastically contacts a contact formed on the flexible printed wiring board; ． A groove formed in the other of the insulating plates and defining a position of the flexible printed wiring board; A flexible printed wiring board connection jig, comprising: a cable having one end electrically connected to the probe pin and a connector connected to the other end.