JPS6016061Y2 - connector - Google Patents

Description

[Detailed description of the invention] The present invention is a connector consisting of a pair of female and male housings containing terminal fittings, and a locking means for locking both housings to ensure their combined state. .

BACKGROUND ART In moving machines and devices such as automobiles, a locking means is provided between the female and male housings in order to prevent the female and male housings from loosening and separating due to running or vibration.

1 and 2 show an example of a conventional connector,
is a male housing, and F is a female housing. The male housing M has a plurality of terminal accommodating chambers 1 therein, and a locking arm 3 is provided on its upper outer circumferential wall 2.

This locking arm 3 extends forward via a rear rising base 4 and is configured to be elastically displaced up and down, and has a locking claw 6 protruding from the upper surface with a locking claw 5 and a tapered back surface 7 at the tip. ing.

On the other hand, the female housing F has a terminal accommodating chamber (not shown) for the terminal accommodating chamber in the rear half, and has a mantle part 8 in which the male housing M is fitted in the front half. A fitting chamber 9 having a lock hole 10 is formed in the lock hole 10, and a taper 11 corresponding to the taper 7 of the lock pawl 6 is formed on the front edge of the lock hole 10.

When the male housing M is fitted into the sleeve part 8 of the female housing F, the locking arm 3 enters the fitting chamber 9,
The taper 7 on the back surface of the lock claw 6 engages with the taper 11 on the front edge of the lock hole 10 to lock both housings F and M, thereby preventing them from loosening or coming off.

Therefore, when a tensile force parallel to the axis P acts on the female and male housings F and M, the taper 11 on the front edge of the lock hole 10 acts on the taper 7 on the back surface of the lock claw 6, so that The engagement will never be released.

However, when a diagonally upward force Q that intersects the axis P is applied to the male housing M, the locking arm 3 with the rear rising base 4 as the starting point bends downward (in the direction of the arrow R), so that the lock claw 6 and the lock hole 10, and there was a risk that the female and male housings F and M would come off.

In other words, in the conventional locking method, the female and male housings F
, If excessive force is applied in the direction of pulling M apart, the lock tends to be released because a force that twists it up and down is likely to be applied.

The present invention has been made in order to eliminate the above-mentioned drawbacks.

FIG. 3 shows an embodiment of the present invention, in which a locking arm 3 having a locking claw 6 at the tip and a locking arm 5 at the middle of the upper surface is provided on the upper outer circumferential wall 2 of the male housing M, and 8 is provided with a fitting chamber 9 having a lock hole 10 as in the conventional case, but in the present invention, the lock claw 6 is provided with a fitting chamber 9 having a lock hole 10.
A recess 12 is provided on the back surface of the lock hole 10, and a convex portion 13 is provided on the front edge of the lock hole 10, and a convex portion 13 is provided on the front edge of the lock hole 10.

According to the present invention, when tension is applied in the direction of separating the female and male housings F and M, the protrusion 13 on the front edge of the lock hole 10 bites into the recess 12 on the back surface of the lock pawl 6, as shown in FIG. Fits in.

Therefore, even if a diagonally upward force Q is applied to the male housing M as shown in FIG. 2, the lock will never be released.

That is, to unlock the female, male housing F
, M are pressed against each other in the fitting direction, and unless a force is applied in the opposite direction to release the fitting between the concave portion 12 and the convex portion 13,
Unable to unlock.

The above example has been explained in which the lock hole 10 that engages with the lock pawl 6 is formed in the upper wall of the fitting chamber 9. However, if the sleeve part 8 is formed sufficiently larger than the male housing M, the fitting It is possible to omit the chamber 9 and provide it directly to the mantle 8.

As described above, the present invention provides a concave portion on the back surface of the lock pawl that faces in the direction in which the male housing is fitted, and a convex portion in the lock hole that faces in the direction in which the female housing that fits into the concave part is pulled apart. Since the lock can be released after the male housing is once pushed in the mating direction to release the engagement between the recess and the protrusion, there is no possibility that the lock will be released unexpectedly during use. It is possible to maintain a stable bonding state at all times.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional connector, Fig. 2 is a vertical sectional view showing its fitted state, Fig. 3 is a perspective view showing an embodiment of the connector of the present invention, and Fig. 4 is its fitted state. FIG. F... Female housing, M... Open fiber housing,
3... Locking arm, 6... Lock claw, 8... Mantle part, 10... Lock hole, 12... Concave part, 13...Protrusion.

Claims (1)

[Scope of utility model registration request] From a pair of female and male housings that house the terminal fittings,
A locking arm is provided on the outer circumferential wall of the male housing and extends forward through a rear end rising base and has a locking claw at its tip, and a locking hole that engages with the locking claw is provided in the mantle of the female housing, In a connector configured to lock female and male housings, a recess is provided on the back surface of the lock pawl in a direction in which the male housing is fitted, and a recess is provided in the lock hole in a direction in which the female housing that is fitted into the recess is pulled apart. 1. A connector characterized in that a connector is provided with a convex portion facing the same direction, and can be unlocked after the female and male housings are once pressed in the mutual fitting direction and the engagement between the concave portion and the eight portions is released.