JPH0612629Y2 - connector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a connector mainly used for connection of a wire harness for an automobile, and of a terminal metal fitting connected to an end of an electric wire and housed inside. This is an improvement on the locking structure of the terminal fittings that prevents the terminals from falling off.

[Conventional technology]

6 and 7, a is a connector housing,
b is a detachable terminal pressing plate, c is a terminal fitting, and the terminal fitting c previously connected to the electric wire d is inserted into the terminal housing chamber e of the connector housing a and locked by the flexible locking arm f,
Next, the terminal pressing plate b is inserted into the accommodating portion g from the rear portion of the connector housing a, and its locking piece h is engaged with and fixed to the locking portion i. At this time, the terminal pressing portion j is fixed to the terminal metal fitting c. The rear projection of the terminal fitting c is doubly locked by being engaged with the locking projection k provided at the rear end.

[Problems to be Solved by the Invention] In the above-mentioned conventional technique, there are problems that the terminal pressing plate b is apt to be forgotten to be attached and the attaching work is troublesome.

The present invention has been made by paying attention to the above-mentioned points, and after the terminal metal fitting is inserted into the connector housing, the terminal metal fitting is inserted in the rear part of the terminal metal fitting without using the terminal pressing plate. It is designed to be double locked.

[Means for Solving the Problems]

In order to achieve the above object, the present invention comprises a connector housing provided with two flexible locking pieces for a terminal fitting in a terminal accommodating chamber, and a locking piece restrainer detachably mounted on the connector housing. , Adopting a configuration in which, when mounted, the restraining rod portion of the restraining piece restraining device is located in the terminal accommodating chamber and restrains one flexible locking piece in a non-engaging position with respect to the terminal fitting against its elasticity. did.

[Action]

The locking piece restrainer is mounted on the connector housing in advance, and the restraining rod displaces one of the locking pieces to the non-engaging position with respect to the terminal fitting and restrains it, and inserts the terminal fitting into the terminal accommodating chamber. Then, when the locking piece restraint is removed, the flexible locking piece restores and engages with the terminal fitting.

〔Example〕

1 to 4, A is a connector housing,
B is a locking piece restraint which is detachably attached to the connector housing A, and C and C ′ are monopolar type and chain type terminal fittings.

In a multipolar connector housing A made of a synthetic resin material, a terminal accommodating chamber 2, 2 is defined by an intermediate partition wall 1, and an inner wall 3, 3'opposed to the intermediate partition wall 1 has a locking portion 4
The first flexible locking pieces 4 and 4 having a and 4a are provided between the outer walls 5 and 5 with the flexible allowance chamber spaces 6 and 6, respectively.

The front end portion of the intermediate partition wall 1 is formed in a bifurcated shape, and the second flexible locking pieces 8 and 8 having locking portions 8a and 8a in the flexible allowing space 7 are provided with the first flexible locking member. It is provided so as to face the pieces 4 and 4.

In the locking piece restraint B, locking arms 9a that engage with locking holes 10a of opposite side walls 10 of the connector housing A are continuously provided at both ends of the main body 9 made of synthetic resin, and an intermediate portion is formed. A restraining rod portion 9b is provided between the pair of terminal accommodating chambers 2 and 2.

A restraining recess 9c having a pair of taper-shaped driving surfaces 9c ₁ and 9c ₁ facing each other is formed at the tip of the restraining rod 9b. When the locking arms 9a are pushed into the housing grooves 10b of the side walls 10 facing each other while being engaged with the locking holes 10a of the side walls 10 (see FIG. 1), the taper of the restraining rod portion 9b is formed. -Shaped drive surfaces 9c ₁ and 9c ₁ are in a forked shape, and the distal end portions 8b of a pair of second flexible locking pieces 8 and 8 are
The second flexible locking pieces 8, 8 which are in contact with 8b are displaced so as to be close to each other and taken into the restraining recess 9c, and the second flexible locking pieces 8, 8 are connected to the terminal fittings C, C. From the engagement position (Fig. 4 (a)) against the elastic force to the non-engagement position against the elasticity, and restrains the non-engagement position (Fig. 4).
(b)).

The connector housing A is shipped from the manufacturing factory to a wire harness wiring factory or the like with the locking piece restraint B assembled as shown in FIG. 4 (b). In this state, the terminal fittings C and C'previously connected to the electric wire D are inserted into the terminal accommodating chamber 2 and the locking projection 1 on the bottom surface thereof is inserted.
1 is engaged with the engaging portion 4a of the first flexible engaging piece 4, and the restraining rod portion 9b serves as an insertion guide for the terminal fittings C and C '(FIG. 4 (c)). Next, when the locking piece restraint tool B is removed, the second flexible locking piece 8 is restored from the non-engaging position to the engaging position, and the locking portion 8a is the female electrical contact portion of the terminal fitting C. The shoulder 12a at the rear end of 12 is engaged with the first flexible locking piece 4 and the terminal fittings C and C'are doubly locked against the subsequent pull-out (FIG. 4 (d)). The stopper 13 at the front end of the terminal accommodating chamber 2 prevents the terminal fittings C and C ′ from coming out forward.

The rear surface 8c of the locking portion 8a protruding from the second flexible locking piece 8 is formed in a rectangular shape, and the second flexible locking piece 8 is not restricted by the locking piece restrictor B and the terminal fitting is provided. In the state in which the terminal fittings C, C'are restored to the engaging position with respect to, the tips of the terminal fittings C, C'abut against the locking portion 8 to prevent the insertion.

The removed locking piece restraint B is sent to the production factory for reuse.

In the embodiment of FIG. 5, the second flexible locking piece 8'is provided toward the rear of the connector housing A ', and the locking piece restraint B is inserted from the rear into the terminal accommodating chamber 2'. It

〔effect〕

As described above, the present invention comprises a connector housing in which two flexible locking pieces for the terminal fitting are provided in the terminal accommodating chamber and a locking piece restrainer detachably provided in the connector housing. Since the restraining rod portion of the restraining piece restraining device is located in the terminal accommodating chamber and restrains one flexible locking piece against its elasticity in a non-engaging position with respect to the terminal fitting. In a wiring factory or the like, it is sufficient to insert the terminal fitting into the connector housing and then remove the locking piece restraint, so that the assembling work is easy and the locking piece restraint can be reused.

[Brief description of drawings]

1 is an exploded perspective view of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a connector housing, FIG. 3 is a perspective view showing the inside by cutting out the connector housing, and FIG. 4 (a) ( b) (c) (d) are longitudinal sectional views showing the engagement process of the connector housing and the locking piece restraint, FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention, and FIG. Fig. 7 is an exploded perspective view of an example, and Fig. 7 is a vertical sectional view showing the assembled state of the same. A: Connector housing, B: Locking piece restraint, C,
C '... Terminal fittings, 2 ... Terminal accommodating chambers, 4, 8 ... Flexible locking pieces, 9b ... Restraining rods.

Claims (2)

[Scope of utility model registration request] 1. A connector housing provided with two flexible locking pieces for a terminal fitting in a terminal accommodating chamber, and a locking piece restrainer detachably mounted on the connector housing.
When attached, the restraining rod portion of the restraining piece restraining device is located in the terminal accommodating chamber and restrains one flexible locking piece in a non-engaging position with respect to the terminal fitting against its elasticity. Connector to be. 2. One of the two terminal accommodating chambers adjacent to each other has one flexible locking piece juxtaposed in close proximity to each other, and the one flexible locking piece is held together by a common restraining rod portion. The connector according to claim (1), characterized in that it is restrained in a non-engaging position with respect to the terminal fitting.