JPS5933180Y2 - lock type connector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lock type connector consisting of a plug and a socket that locks in a connected state.

In the conventional lock type connector, when the plug 10 is inserted into the socket 20 as shown in FIG.
The protrusion 11A of the shell 11 hits the outer periphery of the shell 11.
As a result, the outer edge of the tip of the tongue 21 of the socket 20 hits the inner step 12A of the slider 12 of the plug 10, and the shell 11 of the plug 10 is completely engaged with the tongue 21 of the socket 20. The slider 12 is pushed backward while compressing the coil spring 13 until it comes to a stopped state.

The shell 11 of the plug 10 is inserted into the shell 22 of the socket 20.
is completely inserted, and the protrusion 11A of the shell 11 is inserted into the tongue piece 2.
1, the tongue piece 21 returns to its original state, so the slider 12 is no longer held down, and the spring pressure of the coil spring 13 causes the slider 1 to be locked.
2 is pushed forward and covers the outer periphery of the tongue piece 21, and the tongue piece 21 becomes immovable in the direction of diameter expansion and becomes completely locked.

Next, to unmate the plug 10 and socket 20,
Simply push down the slider 12 backwards with your finger, free the tongue 21 of the socket 20, and pull out the plug 10 from the socket 20.

However, such a locking type connector has a structure in which the slider 12 covers the outer periphery of the shell 22 of the socket 20, so that the outer diameter of the plug 10 becomes large.

An object of the present invention is to provide a lock type connector that can reduce the outer diameter of the plug.

Hereinafter, specific examples of the present invention will be explained in detail with reference to the drawings.

As shown in FIGS. 2 to 5, in the lock type connector of this embodiment, a shell tongue piece 14 is formed on the shell 11 of the plug 10, and a protrusion 14A is provided on the inner surface of the tip of this shell tongue piece 14. There is.

A slider 12 is closely fitted to the outer periphery of the shell 11, and a slider tongue piece 15 is attached to the slider 12 as well.
The shell tongue piece 14 is provided so as to overlap with the shell tongue piece 14 of the shell tongue piece 14 .

The slider 12 is biased by a coil spring 13 so that the slider tongue 15 is normally positioned to overlap the shell tongue 14.

On the other hand, the socket 20 does not have a tongue on the shell 22, but has a stepped portion 22A formed on the inner periphery.

A protrusion 23A is provided on the outer periphery of the tip of the conical base 23 existing within the shell 22 of the socket 20.

In this case, the distance d of the fitting gap 24 between the inner circumferential surface of the shell 22 of the socket 20 and the outer circumferential surface of the conical base 23 is the distance between the shell tongue piece 14 including the protrusion 14A on the plug 10 side and the slider tongue piece 15. The thickness is selected to be slightly larger than the total thickness of .

In such a lock type connector, when the plug 10 is inserted into the socket 20, the shell 11 of the plug 10 first enters the fitting gap 24 of the socket 20.

Next, the tongue piece 15 of the slider 12 tries to enter, but since the protrusion 23A exists at the entrance of the fitting cavity 24, and the shell tongue piece 14 having the protrusion 14A overlaps the slider tongue piece 15. As shown in FIG.
The slider tongue piece 15 rides on A and is pushed up in the direction of diameter expansion, and the slider tongue piece 15 is also pushed up in the direction of diameter expansion and abuts against the inner step portion 22A of the socket shell 22.

Therefore, in this state, insertion of the slider 12 is prevented,
Only the shell 11 side is inserted.

Therefore, the slider 12 is pushed relatively backward,
The coil spring 13 remains compressed.

When the protrusion 14A of the shell tongue 14 of the plug 10 gets over the protrusion 23A of the socket 20, the shell tongue 14 returns to its original state in which it does not protrude to the outer periphery of the shell 11, and the slider tongue 15 also expands in diameter accordingly. It returns to its original state without protruding in the direction and comes off from the inner step 22A of the socket shell 22.

In this state, the slider 12 is pushed out by the pressing force of the coil spring 13, and the slider tongue piece 15 enters the fitting gap 24 as shown in FIG. 5, and overlaps the shell tongue piece 14, so that the shell tongue piece 14 expands. It becomes impossible to move in the radial direction and becomes completely locked.

Next, when pulling out the plug 10 from the socket 20, the slider 12 is pushed back with a finger and the slider tongue piece 15 is pulled out from the socket shell 22.

Then, the shell tongue piece 14 can move in the diametrically expanding direction, so that the plug 10 can be pulled out from the socket 20 in this state.

As explained above, in this invention, a shell tongue piece is provided on the plug side, and the tip of the slider on the plug side is fitted inside the shell on the socket side, so that the outer diameter of the plug can be reduced. I can do it.

Further, in the present invention, since the shell tongue piece on the plug side and the slider tongue piece have an overlapping structure, there is an advantage that sufficient mechanical strength can be maintained even if the thickness of each piece is made thin.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a main part of a conventional locking connector before connection, FIG. 2 is a cross-sectional view of a main part of a locking connector according to an embodiment of the present invention before connection, and FIG. FIG. 4 is a perspective view of the plug used in this embodiment, and FIGS. 4 and 5 are cross-sectional views of main parts of the connector in the process of connection and in a state in which the connection is completed. 10...Plug, 11...Plug shell, 12...Slider, 13...Coil spring, 14...Shell tongue piece, 14A. ...
...Protrusion, 15...Slider tongue piece, 20...
...Socket, 22 ...Socket shell
22A...Step part, 23...Conical base,
23A... Protrusion, 24... Fitting gap.

Claims (1)

[Scope of utility model registration request] In a lock type connector in which a plug and a socket are locked in a connected state, and the locked state is maintained by protruding a slider of the plug, the plug is provided with a shell tongue piece on the plug shell, and the shell tongue piece is provided with a shell tongue piece on the plug shell. The slider of the plug is provided with a protrusion, and the slider of the plug is provided with a slider tongue at a position corresponding to the shell tongue, and the slider tongue is normally pressed against the shell tongue by the pressing force of a coil spring that biases the slider. so that they overlap,
The socket) K is provided with a fitting space between the socket shell and the conical base inside thereof, with a space that allows the shell tongue having the protrusion and the slider tongue to fit together, and in the connected state. The protrusion with which the protrusion of the shell tongue engages is protruded near the entrance of this fitting space, and the gap is set smaller than the sum of the thickness of the shell tongue including the protrusion and the thickness of the slider tongue. A lock type connector characterized by: