JPH0740316Y2 - Push-pull lock connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a push-pull lock connector.

[Conventional technology]

Examples of this type of electrical connector include, for example, Jitsuko Sho 53-25835.
Are disclosed in.

This known electric connector has a plug housing having a cylindrical outer diameter, in which a contact is planted in a front portion forming a connection portion with a mating connector, and an outer peripheral surface has a locking portion for locking with a locking projection of the mating connector. A cylindrical sleeve externally fitted to a rear portion of the engaging portion of the plug housing so as to be movable by a predetermined distance limited in the front-rear direction by a restriction means formed between the plug housing and the plug housing; And a coil-shaped compression spring provided between the sleeve and the sleeve.

Then, at the time of attachment / detachment with the mating connector, the sleeve is positioned rearward with respect to the plug housing against the force of the coil-shaped compression spring, and the engagement portion and the locking projection portion of the relative connector are engaged with each other. It is stopped or released. Further, the coupling with the mating connector is maintained by pushing the sleeve forward by the force of the compression spring to prevent disengagement of the locking portion and the lock protrusion.

[Problems to be solved by the device]

However, in the above-described known push-pull lock connector, since the compression spring is a coil spring wound between the cylindrical plug housing and the sleeve, the plug housing has a rectangular shape. Can no longer be hired. Even if a coil spring having a square shape is made, it is extremely difficult, and the spring back makes the shape not a square shape. further,
Since the coil spring is not held by either the plug housing or the sleeve, there is a problem that the coil spring is disengaged when it is disassembled and workability is deteriorated.

Due to these problems, it has not been possible to make a push-pull lock connector having a square cross section.

The present invention is intended to solve such a problem and to make it possible to manufacture a rectangular push-pull lock connector.

[Means for Solving the Problems]

According to the present invention, the above-mentioned object is achieved by elastically deforming a part of the locking projection of the mating connector when the mating connector is coupled to the outer surface, in which a contact is planted in the front part forming a connection part for mating with the mating connector. A plug housing having a locking portion that rides over the lock projection and locks with the lock projection, and a restricting unit that cooperates with a part of the plug housing, and the predetermined limit limited in the front-rear direction by the restricting unit. A sleeve externally fitted to a rear portion of the engaging portion of the plug housing so as to be movable with respect to the plug housing by a distance; and a compression spring provided between the plug housing and the sleeve. When the locking portion and the lock protrusion are crossed over, the sleeve is pressed against the elastically deformed portion of the lock protrusion and retracts against the compression spring to complete the crossover. In the case where the plug spring and the sleeve are forwardly moved by the force of the compression spring so as to receive the portion of the lock protrusion that has elastically returned to the original shape, the fitting surfaces of the plug housing and the sleeve have a square tubular shape. Are formed as leaf springs and are symmetrically arranged so as to be positioned on at least a pair of opposing surfaces of the square tube,
Moreover, a part of each leaf spring is held by a plug housing or a sleeve at a part thereof.

[Action]

In the present invention, the compression spring, which is formed as a leaf spring, acts on the sleeve at the symmetrical opposing surfaces of the rectangular plug housing. Unlike a conventional coil spring, a leaf spring can be easily and inexpensively manufactured even if the plug housing is large. Further, the leaf spring is partially held by a plug housing or a sleeve,
Even if it is a small part, it does not come off even when it is disassembled, and there is no fear of loss, and workability is improved.

〔Example〕

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view showing the push-pull lock connector 1 of this embodiment and a mating connector C to be connected thereto in a state before being coupled.

In FIG. 1, reference numeral 2 denotes a plug housing of the push-pull lock connector 1 having a quadrangular cross section in a plane perpendicular to the plane of the drawing. Inside, for example, two contact terminals 22 which are crimped to one end of a cable 21 are inserted. It is worn. In the case shown in the figure, the terminal 22 has a female shape, and from the opening of the front part (the lower part in the figure) of the plug housing 2, the other connector C
It accepts the male terminal C1. Also the terminal
After being attached to the plug housing 2 from above, 22 is prevented from coming off by an elastic locking piece 23 provided inside the plug housing 2. A cap 24 for holding the cable 21 is fitted on the upper end of the plug housing 2.

The plug housing 2 has projecting locking portions 25 on both side surfaces, and a flange portion 26 above the locking portions 25 and forming one of the regulating means.
It has and. The upper surface of the flange portion 26 and the cap
A groove-shaped space having a predetermined distance (height in the figure) is formed between the lower end surface of 24.

A quadrangular cylindrical sleeve 3 is externally fitted to a portion above the locking portion 25 of the plug housing 2 and is guided by the plug housing 2 and is vertically movable. The sleeve 3 has a locking projection 31 formed therein. The locking projection 31 is in the groove-shaped space of the plug housing 2 and constitutes the other of the restricting means, and together with the flange portion 26 of the plug housing, limits the moving distance of the sleeve 3.

Between the locking projection 31 of the sleeve 3 and the cap 24 of the plug housing 2, two leaf springs 4 are arranged in the vertical direction under initial compression. The leaf spring 4 has a substantially V-shape as shown in FIG. 2, and is symmetrically located on the side surface of the opposing surface of the plug housing 2 having a quadrangular cross section. The leaf spring 4 is held by the locking projection 31 of the sleeve 3 by the holding portion 41 at the center, for example. The leaf spring 4 is not limited to the one shown in FIG. 2 and may have the form shown in FIGS. 3 to 5. In the case where the two springs as shown in FIGS. 2 and 5 are formed separately, the manufacture is simplified and the width of the plug housing can be easily changed. The one integrally formed as described above has an advantage of being easy to handle. In addition, in the one shown in FIGS. 3 to 5, the sleeve is held by a notch groove or a projection at the end.

Further, the mating connector C has a cylindrical body, and a lock protrusion C2 for engaging with the engaging portion 25 of the connector of this embodiment is formed on the inner surface of the upper end portion thereof. The upper end portion has elasticity in the direction in which the distance between the lock protrusions C2 increases.

In this embodiment, attachment / detachment with the mating connector is performed as follows.

First, when connecting to the mating connector, FIG. 6 (A)
In, the part of the plug housing of the connector of the present invention is inserted into the mating connector C. Then, the locking portion 25 of the plug housing comes into contact with the locking protrusion C2 of the mating connector,
The space between the two lock protrusions C2 is pushed and expanded to further enter into the mating connector C. Thereafter, as shown in FIG. 6 (B), the sleeve 3 moves relative to the plug housing 2 while the tip (lower end) of the sleeve 3 contacts the mating connector and compresses the leaf spring 4. In the meantime, since the locking portion 25 sufficiently exceeds the locking projection C2 of the mating connector C, the mating connector returns to its original shape, and the sleeve 3 restores the restoring force of the compression spring 4 as shown in FIG. 6 (C). Then, it is pushed downward to be fitted onto the mating connector. The amount of downward movement of the sleeve 3 at that time is regulated by the flange portion 26 of the plug housing 2 and the locking projection 31 of the sleeve 3 which are regulating means. Thus, the connection between the connector of the present invention and the mating connector is completed.

Next, at the time of disconnection from the mating connector, the sleeve 3 is moved upward against the force of the leaf spring 4 to obtain the state of FIG. 6 (B). Then, since the mating connector is not constrained by the sleeve on the side, the lock projection C2 is easily widened by lifting the plug housing 2.
Both connectors are separated from each other in the same state as in FIG. 6 (A).

[Effect of device]

As described above, the push-pull lock connector of the present invention uses the leaf spring as the spring interposed between the plug housing and the sleeve, so that it can be applied to a rectangular connector easily and at low cost. Since the leaf spring is held by the sleeve or the plug housing, even if the leaf spring is disassembled, the trouble of losing the leaf spring, which is a small component, is eliminated and the workability is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a push-pull lock connector and a mating connector in an embodiment of the present invention in a separated state, FIG. 2 is a perspective view of a leaf spring used in the connector of FIG. 1, and FIGS. 5 is a perspective view showing a different modified example of a leaf spring which can be adopted instead of the leaf spring of FIG. 2, and FIGS. 6 (A) to 6 (C) sequentially show the process of connecting the connector of FIG. It is sectional drawing shown. 1 …… Push-pull lock connector 2 …… Plug housing 25 …… Locking part 26 …… Flange part (restricting means) 3 …… Sleeve 31 …… Locking protrusion (restricting means) 4 …… Leaf spring C …… Counterpart connector C2 …… Lock protrusion

Claims (1)

[Scope of utility model registration request] 1. A contact is planted in a front portion forming a connecting portion for coupling with a mating connector, and an outer peripheral surface of the mating connector is overcome by the elastic deformation of the lock projecting portion of the mating connector during coupling. A plug housing having a locking portion that locks with the lock projection, and a restricting means that cooperates with a part of the plug housing, and the plug housing is a predetermined distance limited in the front-rear direction by the restricting means. And a compression spring provided so as to be interposed between the plug housing and the sleeve. When the locking portion and the lock projection are crossed over, they are pressed by the elastically deformed portion of the lock projection and retracted against the compression spring, and elastically return to the original shape when the overcoming is completed. In such a structure in which the compression spring is moved forward so as to receive the above-mentioned locking protrusion, the mating surfaces of the plug housing and the sleeve each have a square tubular shape, and the compression spring is a leaf spring. Formed and arranged symmetrically so as to be located on at least a pair of opposing surfaces of the square tube,
A push-pull lock connector, characterized in that a part of each leaf spring is held by a plug housing or a sleeve at a part thereof.