JP2536595Y2 - Key cylinder device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key cylinder device having a structure in which a key cylinder is inserted into a housing and mounted in a retaining state.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional structure of a key cylinder device of this kind. The key cylinder 1 is configured by rotatably storing a key rotor 3 in a cylinder case 2, and the key cylinder 1 is inserted and mounted in a cylindrical housing 4.

The cylinder case 2 of the key cylinder 1
Is provided with a stopper pin 5 having a flange 5a at an intermediate portion, and a compression coil spring 6 for urging the stopper pin 5 outward. The key cylinder 1 is attached to the housing 4 in a state where the key cylinder 1 does not come off by fitting into the fitting hole 7 formed in the peripheral wall portion of the key cylinder 1.

[0004]

[Problem to be solved by the invention] With the above configuration,
When the key cylinder 1 is mounted on the housing 4, the stopper pins 5
Key cylinder 1 must be inserted into the housing 4 while pressing against the spring force of the compression coil spring 6.
There was a drawback that it was difficult to attach.

Accordingly, an object of the present invention is to provide a key cylinder device capable of improving the mountability of a key cylinder to a housing.

[0006]

In order to achieve the above object, the present invention provides a housing having a cylindrical shape and a fitting hole at a predetermined portion of a peripheral wall portion, a key cylinder inserted into the housing, An elastic piece provided on the outer peripheral part of the key cylinder and having an intermediate part swingably supported by a convex part formed on the key cylinder, and a stopper pin provided at one end of the elastic piece. When the elastic piece is inserted into the housing, the other end of the elastic piece abuts on the inner surface of the housing, and the elastic piece rotates about the convex portion so that the stopper pin is pressed against the inner surface of the housing. And fitted in the fitting hole.

[0007]

Before the key cylinder is inserted into the housing, no urging force acts on the stopper pin.

When the key cylinder is inserted into the housing together with the stopper pin and the other end of the elastic piece comes into contact with the inner surface of the housing, the elastic piece rotates about the projection of the key cylinder as a fulcrum.

In accordance with the rotation of the elastic piece, a stopper pin provided at one end of the elastic piece is urged so as to press against the inner surface of the housing, and the tip of the stopper pin is attached to the housing. The key cylinder is fitted in the fitting hole when it comes to correspond to the fitting hole on the side, so that the key cylinder is mounted on the housing in a state where it cannot be removed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a key cylinder device for an ignition of an automobile will be described below with reference to FIGS.

The housing 11 has a cylindrical shape and has a through hole 12 formed at a predetermined portion of a peripheral wall portion 11a.

The key cylinder 13 inserted into the housing 11 is formed by rotatably storing a key rotor 15 in a cylindrical cylinder case 14. A key (not shown) is inserted into a key insertion hole of the key rotor 15. The ignition switch is operated based on the rotation.

A groove 16 is formed on the outer periphery of the cylinder case 14 which is the outer periphery of the key cylinder 13 so as to extend in the axial direction. A convex portion 17 is formed at an intermediate portion of the concave portion 16, and a hole portion 18 is formed at a deep portion (front end side) of the concave portion 16.

The elastic piece 19 is formed of, for example, an iron plate. The elastic piece 19 is arranged in the concave portion 16 with the intermediate portion supported by the convex portion 17. As shown in FIG. 3, a support portion 20 having a circular hole 20a is integrally formed at one end of the elastic piece 19, and a bent portion 21 having a concave shape is formed at the other end. Is formed.

The stopper pin 22 has a cylindrical main body 2.
2a has a flange portion 22b at an intermediate portion thereof,
2a is held at one end of the elastic piece 19 by being inserted into the hole 20a of the support portion 20.
It is movably inserted into the hole 18 of the cylinder case 14.

The key cylinder 13 is connected to the housing 1
In order to mount it on No. 1, it is performed as follows.

Before the key cylinder 13 is inserted into the housing 11, as shown in FIG.
Reference numeral 2 denotes a state in which the bent portion 21 which is the other end of the elastic piece 19 projects outward from the recess 16 while being stored in the recess 16 of the cylinder case 14.

In this state, the key cylinder 13 is inserted into the housing 11 in the direction of the arrow A from the front end side thereof.
At this time, since the stopper pin 22 is housed in the recess 16, the stopper pin 22 is also housed in the housing 11 together with the key cylinder 13.

When the bent portion 21 of the elastic piece 19 comes into contact with the inner surface of the housing 11, the elastic piece 19 rotates in the direction of arrow B in FIG. In response to the rotation of the elastic piece 19, the stopper pin 22 is urged in the direction of arrow C, which is the inner surface side of the housing 11, and as shown in FIG. When it comes to correspond to the fitting hole 12 of 11, it fits into the fitting hole 12.

As a result, the key cylinder 13 is mounted on the housing 11 so as not to come off.

According to the present embodiment, the key cylinder 1
Before the insertion of the elastic piece 3 into the housing 11,
9 does not function as a so-called leaf spring because the bent portion 21 side is in a free state, and the urging force of the elastic piece 19 does not act on the stopper pin 22. When inserting the key cylinder 13 into the housing 11, there is no need to hold down the stopper pin 22 against the urging force.

Then, the key cylinder 13 is connected to the housing 1.
1, the elastic piece 19 functions as a leaf spring, and the stopper pin 22 is fitted into the fitting hole 12 of the housing 11 by the urging force of the elastic piece 19, so that the key The cylinder 13 can be attached to the housing 11 in a state where the cylinder 13 cannot come off.

Further, by adopting such a configuration, it is possible to easily cope with automatic assembly.

The present invention is not limited to a key cylinder device for an automobile ignition, but can be applied to other key cylinder devices.

[0025]

As is clear from the above description, according to the present invention, when the key cylinder is inserted into the housing,
There is no need to hold down the stopper pin against the urging force, so that an excellent effect that the mountability of the key cylinder to the housing can be improved can be achieved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view of the key cylinder before the key cylinder is inserted into a housing.

FIG. 3 is an enlarged perspective view of an elastic piece and a stopper pin.

FIG. 4 is a diagram corresponding to FIG. 1 showing a conventional configuration.

[Explanation of symbols]

11 is a housing, 11a is a peripheral wall, 12 is a fitting hole, 1
3 is a key cylinder, 17 is a projection, 19 is an elastic piece, and 22 is a stopper pin.

Claims (1)

(57) [Scope of request for utility model registration] 1. A housing having a cylindrical shape and having a fitting hole at a predetermined portion of a peripheral wall portion, a key cylinder inserted into the housing, and an intermediate portion provided on an outer peripheral portion of the key cylinder formed in the key cylinder. And a stopper pin provided at one end of the elastic piece, and the other end of the elastic piece when the key cylinder is inserted into the housing. Abuts against the inner surface of the housing, and the stopper pin is urged to press against the inner surface side of the housing in response to the elastic piece rotating about the convex portion as a fulcrum. A key cylinder device, characterized in that the key cylinder device is configured as follows.