JPS585342Y2 - connector housing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an improvement in the locking means for the terminal fittings in the terminal accommodating chambers of the connector housing.

A conventional locking means for a terminal fitting in a terminal accommodating chamber has a structure as shown in FIG.

That is, A is a connector housing, and when the terminal metal fitting B is inserted into the terminal housing chamber a, the electrical contact portion B1 formed at the front of the board portion abuts against the stopper wall C, preventing it from being pulled out to the front. At the same time, the locking protrusion e at the tip of the flexible arm d engages with the rear end of the electrical contact part B1, and the accommodation chamber a is prevented from coming out.
The device was pressed against the bottom wall of the device to prevent it from wobbling or coming out backwards.

In addition, B2 is an electric wire connection part, and W is an electric wire.

However, in the case of the above configuration, the flexible arm d is not protected at all.

Therefore, when tension is applied to the electric wire W, the flexible arm d bends or deforms, causing fatigue, and in severe cases, cracks occur in the locking protrusion e, impairing the function of the flexible arm d. However, there was a drawback that the terminal fitting B could easily be removed, and furthermore, once the terminal fitting B was inserted, it could not be removed without using a special jig.

The present invention was developed with the above-mentioned points in mind. By installing a protective cover to protect the flexible arm, it is possible to prevent deformation and damage to the flexible arm, and even if the flexible arm is damaged, the terminal fitting can be prevented from coming out. Another object of the present invention is to provide a connector housing in which the terminal fitting itself can be attached and detached extremely easily by removing the protective cover.

Hereinafter, the present invention will be explained based on the drawings. In Fig. 2, 1 is a main body of a connector housing that opens upward and downward, and a plurality of terminal accommodating chambers 3 are formed inside along the front and rear side walls 2, 21. A step portion 4 is provided protruding from the lower part of the outer periphery.

In addition, lock claws 6.6' for a protective cover, which will be described later, are protruded from the left and right side walls 5.5'.

Thus, the side walls 2, 2 constituting one side wall of each terminal accommodation chamber 3
A window I facing the chamber 3 is provided on the side of the step 4 in the middle of ', and a flexible arm 9 is formed by two splits 8, 8 continuous with the window 7, and a flexible arm 9 is formed on the inner surface of the tip. A locking protrusion 10 is provided in a protruding manner.

That is, a part of the side wall 2 of the main body 1 is used to form a flexible arm 9 for locking the terminal fitting.

Reference numeral 11 designates a plate-shaped protective cover for this flexible arm, which is provided with clamping arms 13, 13 having a lock hole 12 for the lock claw 6 on both sides, and a spacer 14 protruding from the window 7. has.

Note that 15 is a stopper wall, which has the same structure as the conventional example.

Next, the effect will be explained.

First, when the terminal fitting B is inserted from the lower open end of the terminal accommodating chamber 3, the tip of the electrical contact portion B1 comes into contact with the locking protrusion 10, as shown in FIG. 3A, but the tapered surface 10'
This causes the flexible arm 9 to bend outward and smoothly enter.

Next, when the terminal fitting B is further pressed, as shown in FIG. They engage with each other and are prevented from being pulled out in the vertical direction.

Finally, the protective cover 11 is attached to the side walls 2, 2' of the main body 1 and fixed by the lock claws 6 and lock holes 12, and the spacer 14 is made to protrude from the window 7.

As a result, since the flexible arm 9 is supported by the protective cover 11, it will not bend or deform at all even if tension is applied to the electric wire W, and the stress exerted on the locking protrusion 10 will be transferred to the spacer 14. Since it is dispersed and is less prone to damage due to cracks as in the conventional case, it can always be locked in a stable state.

Further, even if the tension is too strong and the locking protrusion 10 is cracked and damaged, the rear end of the electrical contact portion B1 abuts the spacer 14 protruding from the window 7, so there is no fear that it will come out.

On the other hand, to remove the terminal fitting B once inserted, remove the protective cover 11, insert your fingertip or screwdriver through the window 7 and spread the flexible arm 9, and the bow can be easily pulled out. No jigs are required.

As explained above, the present invention provides a window in the middle of the side wall of the connector housing body, and forms a flexible arm that locks the terminal fitting by two continuous strips in the window. A protective cover is provided for protection, and a spacer protruding from the inner surface of the cover supports the locking protrusion of the flexible arm in correspondence with the window.

Therefore, the flexible arm is prevented from being deformed or damaged by the protective cover, and the terminal fitting can always be locked in a stable state.
In addition, even if a crack occurs in the locking protrusion of the flexible arm, the spacer can effectively prevent the terminal fitting from being removed.Furthermore, by removing the protective cover, no special jig is required as in the past. Terminal fittings can be easily attached and detached without any trouble.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a main part showing a terminal locking means in a conventional connector housing, Fig. 2 is a partially cutaway perspective view showing the connector housing of the present invention in a separated state, and Fig. 3 shows its function. FIG. 3 is a cross-sectional view of main parts showing the state. 1... Main body (of the connector housing), 7...
...window, 8...split, 9...flexible arm, 10...locking protrusion, 11...
Protective cover, 14...Spacer.

Claims (1)

[Scope of utility model registration request] The main body of the connector housing has a terminal accommodating chamber formed therein, and a protective cover attached to the outer periphery of a side wall of the main body; a window is provided in the middle of the side wall of the main body constituting one side wall of the terminal accommodating chamber; A flexible arm is formed by dividing the two continuous strips of the room number, and a locking protrusion that engages with the terminal fitting is provided on the inner surface of the tip of the flexible arm, and the protective cover is provided with a locking protrusion that engages with the terminal fitting. A connector housing characterized by having a corresponding protruding spacer supporting a locking protrusion.