JPS598305Y2 - connector - Google Patents

Description

[Detailed Description of the Invention] The present invention consists of a pair of opposing female housings that house electrical connectors;
The locking mechanism for securing the connection between the two housings has been improved in a certain connector from the male housing.

Conventionally, as a locking mechanism for this type of connector, a locking arm b is provided on the outer circumferential wall a of a male housing A, as shown in FIG. In addition, a locking protrusion d is provided at the tip of the female housing B, and a fitting chamber f for the locking arm b is provided in the housing part e of the female housing B, and the locking protrusion d is provided in the locking hole g. A type has been proposed in which both housings A and B are locked by fitting the housings A and B together.

The female and male housings are fitted and separated by pressing the locking arm b against the outer circumferential wall a, and the elastic restoring force of the arm b locks them together.

However, according to the conventional type, the locking arm b is configured to press toward the outer peripheral side a, so the amount of displacement thereof is small;
It was not possible to obtain a sufficient feel when the locking was engaged, and it was difficult to increase the elastic strength of the locking arm b to strengthen the locking force.

That is, to increase the amount of displacement of the locking arm a, it is sufficient to make its rising base C sufficiently high, but the entire housing becomes bulky and large, and the locking arm a is bent due to external force and the lock is released. This is because there is a risk.

The present invention was developed by focusing on the above-mentioned points, and has a structure in which the locking arm is displaced upwardly relative to the outer peripheral wall when locking, and by increasing the amount of displacement, a sufficient locking feel can be obtained. At the same time, the lock can be easily unlocked by using a pair of supporting arms that extend from side to side on the outer wall.

Hereinafter, the present invention will be explained with reference to the drawings. In Fig. 2, C is a male housing integrally formed from an insulating alloy or resin body. A chamber 1 is shaped, and a locking arm 3 is provided on its outer peripheral wall 2.

The locking arm 3 is an elastic body, extends forward via a rising base 4 at the rear end, and has a locking protrusion 5 protruding from its tip extending perpendicularly to the arm 3.

That is, the width l of the locking protrusion 5 is the width l of the locking arm 3.
.

It is larger and has protrusions 5a formed on both sides, and an inclined surface 5b that descends toward the rear is provided at the front end.

On the other hand, D is a female housing which is also integrally formed from a resin material, and has a housing portion 6 in which the male housing C is fitted in the front half, and a housing corresponding to the housing chamber 1 in the rear half of the interior. Room 7 is provided.

Furthermore, a pair of supporting arms 9 are provided on the outer circumferential wall 8 of the mantle 6 via a beam fulcrum member 10 so as to be expandable to the left and right.

The elastic supporting arms 9, 9 are parallel to the fitting direction of the housing D, and the distance between their inner surfaces is slightly larger than the width l of the locking protrusion 5 to form a passage that allows the locking arm 3 to enter. A locking pawl 11 is provided protruding from the front inner side of the shape.

This locking claw 11 corresponds to the locking protrusion 5,
At its front end, there is formed an inclined surface 11a that descends toward the front.

Further, the beam fulcrum member 10 has flexible elasticity, is provided perpendicular to the fitting direction of the housing D, and has its central lower surface fixed on the outer peripheral wall 8.

Therefore, when the rear end 9a of the clamping arm 9 is pressed in the direction of the arrow P, the beam fulcrum member 10 is curved and the tip end 9b is pushed in the direction of the arrow P.
Expand in the direction.

In addition, the distance m between the back surface 1lb of the locking claw 11 and the beam fulcrum member 10.

is larger than the vertical width m of the locking protrusion 5. In the above structure, when the male housing C is inserted into the female housing D facing the sleeve part 6, the locking protrusion 5 and the locking claw 11 abut each other, but as shown in FIG. The locking arm 3 enters while being lifted upward by the inclined surfaces 5b and lla, and the locking protrusion 5
When it gets over the locking pawl 11, it instantaneously returns elastically, and the back surfaces 5C and llb abut against each other, and both the housings C and D are locked.

In this case, since the locking arm 3 is bent upward, the locking claw 11
By appropriately changing the height of the locking arm, the amount of displacement can be made sufficiently large to freely change the feel when locking, and the elastic strength of the rising base 4 and the locking arm 3 itself can be freely adjusted.

Conversely, to release the lock, press the rear end 9a of the clamping arm 9 in the direction of the arrow P with your finger or the like, and the tip 9b will expand in the direction of the arrow Q and engage the locking protrusion 5. The engagement with the locking pawl 11 is disengaged, and the command can be easily achieved.

Above, an example has been described in which the beam fulcrum member 10 has flexible elasticity and bends in response to a force in the direction of the arrow P. However, the entire lower surface of the beam fulcrum member is fixed to the outer peripheral wall 8 and Only the arms may be expanded.

Since the present invention is as described above, by appropriately changing the height of the locking pawl, the amount of displacement of the locking arm and the feel when locking can be freely adjusted.

In addition, since the locking arm is configured to be displaced above the outer peripheral wall of the housing, it is possible to increase the elastic strength and strengthen the locking force without being subject to structural constraints like in the past. It has the advantage of not having any drawbacks such as being bulky.

Further, since the lock is released by opening the clamping arm, it is hardly affected by the elastic strength of the locking arm and can be performed very easily.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional example of the connector, FIG. 2 is a perspective view of the connector of the present invention in a separated state, and FIG. 3 is an explanatory diagram of the operating state. C: male housing, D: female housing, 3: locking arm, 4: rising base, 5: locking protrusion , 9...Pinching arm, 11...Latching claw.

Claims (1)

[Scope of utility model registration request] In a connector consisting of a pair of opposing female and male housings that house electrical connectors, the male housing is inserted into the sleeve of the female housing, and is provided with a locking mechanism that secures the connection between the two. is provided with a locking arm that extends forward through a rising base at the rear end and has a locking protrusion at its tip, and a pair of clamping arms that allow the locking arm to enter are provided on the outer peripheral wall of the female housing so as to be expandable; A connector characterized in that a locking claw that engages with the locking protrusion is provided on the inside of the clamping arm.