JPH04121984A - How to remove terminal fittings and extraction jig - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method and a jig for extracting a terminal fitting that is locked in a connector housing in a connector used for connecting an automobile wire harness or the like. be.

[Conventional technology]

In FIG. 8, a is a male connector housing, b is a female terminal fitting, and a cantilevered flexible locking piece a2 is provided extending forward in the terminal accommodating chamber a of the connector housing a. At the same time, a stopper portion a3 is provided at the front end, and the terminal fitting is provided with a female electrical contact portion b1 at the front and a wire connection portion b2 at the rear. C is a jig for extracting the terminal fitting, and the holder portion C2 is provided with a push-up driving portion C3 having a tapered sharp end portion C2.

The terminal fitting is located in the terminal housing chamber a) of the connector housing a).
Inside, the front end of the electric contact b1 is engaged with a stopper part, and the rear end shoulder of the electric contact part is engaged with a locking part a4 of a flexible locking piece a2. 9th Ward).

To remove the terminal metal fitting, hold the connector housing a with one hand, hold the holder part C3 of the jig C with the other hand, insert it into the terminal accommodation chamber al from the front of the connector housing a, and By pushing the end c2 into the gap between the bottom surface of the electrical contact part b1 and the locking part a4 and moving the locking part a4, the terminal fitting A is disengaged, and the connector housing a is simultaneously removed by the hand holding the jig C. While shifting his hand to hold the wire, he pulls the electric wire d with the other hand and pulls out the terminal fitting backwards.

[Problems to be solved by the invention: 1 - In the above-mentioned prior art, the three operations of supporting the connector housing, operating the extracting jig, and extracting the terminal fitting must be performed with both hands. Removing the metal fittings is troublesome.

The present invention focuses on the drawbacks of the prior art, and makes it possible to remove the terminal fittings easily by eliminating the need to manually pull out the terminal fittings.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a method for extracting a terminal fitting that is locked by a flexible locking piece in a terminal accommodating chamber of a connector housing. A method is adopted in which a flexible locking piece is driven by an engagement release member to disengage the terminal metal fitting, and then the terminal metal fitting is pushed by a press drive member. A structure is adopted in which a disengagement member between the flexible locking piece of the housing and the terminal fitting is provided, and a pressing drive member for the terminal fitting is provided so as to be movable along the disengagement member.

(Example) Fig. 1 shows a terminal metal extraction jig A according to the present invention, in which an engagement release member 3 is connected to the front of a plate-shaped holder part 1 via a step part 2. The disengagement member 3 has a tapered drive surface 3b having a sharp end 3a at its distal end.

A slider 5 is movably provided on the disengagement member 3, and by being supported by the slider 5, the pressing drive member 4 against the rod-shaped terminal fitting can freely slide along the disengagement member 3. established in An abutment surface 4a is formed at the tip of the pressing drive member 4, and the rear extension part is bent to form an elastic connection part 4', and the operating member 6 coupled to the elastic connection part 4' is attached to the holder part 1. It is slidably pressed against the

A stopper 7 is provided in front of the holder portion 1, and an engaging portion 6a for the stopper 7 is formed on the entire surface of the operating member 6.

The extracting jig A is operated by holding the holder part 1 with four fingers and moving the operating member 6 with the thumb to release the pressing drive member 4.
is moved relative to the engagement release member 3. At this time, the pressing drive member 4 advances to a position where the engagement portion 6a of the operating member 6 abuts against the stopper 7, and the slider 5 moves against the step. Move backward until it collides with part 2.

During use, hold the extraction jig A with one hand and the connector housing B with the other hand, and move the engagement release member 3 of the connector housing B with the pressing drive member 4 of the extraction jig A retracted. Slide parallel to the electrical contact portion C0 from the front and insert it into the space 8 with the female terminal fitting C, and release the release portion 9 at the free end of the cantilevered flexible locking piece 9.
By pushing the tapered driving surface 3b through the sharp end 3a into the gap 10 between the electric contact portion CI and the electric contact portion C1, the locking portion 9a is pushed up (Fig. 2(a)), and the engagement with the electric contact portion CI is completed. With the contact removed, push the pressing drive member 4 to bring the abutment surface 4a into contact with the front end of the electrical contact portion C8, and drive the terminal fitting C backward to remove it from the connector housing B (see Figure 2 (b). )).

In addition, when there is no gap 10, by forcing the sharp end 3a, the locking part 9a and the electrical contact part C
It is also possible to disengage the I.

The pressing drive member 4 is operated by the operating member 6 for the next extraction operation.
will be retreated.

In the embodiment shown in FIG. 3, the holder part l and the operating member 6 are
A tension spring 11 is provided between the rear part of the press drive member 4 and the push drive member 4 to automatically return to its original position.

In the embodiment shown in FIG. 4, the holder part 1 and the connecting body 6'
A tension spring 11 is provided between the front part and the front part.

In this case, since the pressing drive member 4 is always urged forward, when the disengagement member 3 is inserted into the space 8, the abutment surface 4a of the pressing driving member 4 immediately connects the electric contact portion CIO.
As the engagement release member 3 approaches the front end, the pressing drive member 4 retreats, and the engagement release member 3 engages the flexible locking piece 9.
When the restraint of the terminal fitting C is released, the pressing drive member 4 pushes the terminal fitting C by the elasticity of the tension spring 11 and automatically removes the terminal fitting C. Therefore, the pressing drive member 4
There is no need for an operating member to manually push out the material.

In the embodiment shown in FIG. 5, a dovetail 1a is formed on the surface of the holder portion 1, and a dovetail groove 6b formed on the inner surface of the operating member 6 engages with the dovetail groove 6b to be slidably guided.

FIG. 6(a) shows the cross-sectional shape of the disengagement member 3, and the cross-sectional shape is the connector housing B shown in FIG. 6(b).
It is formed into a rectangular shape corresponding to the cross-sectional shape of the space 8 between the electrical contact portion C3 of the terminal fitting and the insertion position of the disengagement member 3 into the space 8.

FIG. 7(a) shows another cross-sectional shape of the disengagement member 3', and the disengagement member 3' is located between the connector housing B' and the electrical contact portion C of the terminal fitting shown in FIG. 7(b). It is deformed to correspond to the cross-sectional shape of the space 8'.

Although the above embodiments are all related to extraction jigs for female terminal fittings, the present invention can also be applied to male terminal fittings by changing the tip of the pressing drive member so that it engages with the male terminal fitting. It is possible.

[Effects of the Invention] As described above, the present invention provides a method for extracting a terminal fitting that is locked by a flexible locking piece in a terminal accommodating chamber of a connector housing. When the flexible locking piece is driven by the disengagement member to disengage the terminal fitting, the terminal fitting is pushed from the front to the rear of the connector housing by the pressing drive member. In the operation of extracting the terminal fitting from the connector housing, it is possible to eliminate the need to directly hold the electric wire by hand to pull out the terminal fitting, thereby facilitating the extraction operation.

[Brief Description of the Drawings] Fig. 1 is a perspective view of the extraction jig of the present invention, Fig. 2(a)
, [available]) is a sectional view showing the process of removing the terminal metal fitting, Figures 3, 4 and 5 are perspective views showing other embodiments of the extraction jig, and Figure 6(a) is a cross-sectional view showing the extraction process of the terminal fitting. Cross-sectional view of the uncoupling member, Fig. 6 (g))
is a front view of the connector, FIG. 7(a) is a sectional view of another embodiment of the disengagement member, FIG. 7(b) is a front view of another connector, and FIG. 8 is a perspective view of the conventional example. , FIG. 9 is a sectional view showing the removal operation of the terminal fitting in the same as above. A...Extraction jig, B, B'...Connector housing, 1...Holder part, 3, 3'...Engagement release member, 4...Press drive member, 11...Spring .

Claims (4)

[Claims] (1) In a method for extracting a terminal fitting that is locked by a flexible locking piece in a terminal accommodation chamber of a connector housing, a removal jig having an engagement release member and a pressing drive member is used, and the terminal fitting is removed by the engagement release member. A method for extracting a terminal fitting, characterized by pushing and moving the terminal fitting with a pressing drive member in a state in which a flexible locking piece is driven to disengage the terminal fitting. (2) A disengagement member between the flexible locking piece of the connector housing and the terminal fitting is provided in front of the holder portion, and a pressing drive member for the terminal fitting is provided so as to be movable along the disengagement member. A terminal metal extraction jig featuring the following. (3) A second feature comprising a spring that urges the pressing drive member to a retracted position with respect to the disengagement member.
A jig for extracting the terminal metal fittings described in . (4) A second feature comprising a spring that biases the pressing drive member to the forward position relative to the disengagement member.
A jig for extracting the terminal metal fittings described in .