JPH0545167U - Key cylinder device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the mountability of the key cylinder to the housing. [Structure] An elastic piece 19 is arranged in a recess 16 formed in a cylinder case 14 of a key cylinder 13.
A stopper pin 22 is attached to the support portion 20 at one end of the. In a state before the key cylinder 13 is inserted into the housing 11, the stopper pin 22 is not biased, and the bending portion 21 at the other end of the elastic piece 19 is inserted into the housing 11 as the bending portion 21 is inserted into the housing 11. When it comes into contact with the inner surface of the housing 11, the elastic piece 19 rotates about the convex portion 17 as a fulcrum, and the stopper pin 22 is biased so as to come into pressure contact with the inner surface of the housing 11 and is fitted into the fitting hole 12 of the housing 11. Come to do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a key cylinder device having a structure in which a key cylinder is inserted into a housing to prevent the key cylinder from coming off.

[0002]

[Prior Art]

 A conventional configuration of this type of key cylinder device is shown in FIG. The key cylinder 1 is constructed by rotatably housing a key rotor 3 in a cylinder case 2, and the key cylinder 1 is mounted in a cylindrical housing 4 in an inserted state.

A cylinder case 2 of the key cylinder 1 is provided with a stopper pin 5 having a collar portion 5a at an intermediate portion thereof 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 locked state by fitting the tip of the stopper pin 5 into the fitting hole 7 formed in the peripheral wall of the housing 4.

[0004]

[Problems to be solved by the device]

 When the key cylinder 1 is attached to the housing 4 in the above-described configuration, the stopper pin 5 is pressed against the spring force of the compression coil spring 6 so that the stopper pin 5 does not protrude outward, Since the cylinder 1 has to be inserted into the housing 4, it is difficult to mount it.

Therefore, an object of the present invention is to provide a key cylinder device that can improve the mountability of the key cylinder to the housing.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is provided in 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, and an outer peripheral portion of the key cylinder. An elastic piece whose middle portion is swingably supported by a convex portion formed on the key cylinder and a stopper pin provided at one end of this elastic piece are provided, and the elastic piece is inserted when the key cylinder is inserted into the housing. The other end of the stopper contacts the inner surface of the housing and the elastic piece pivots around the convex portion as a fulcrum, so that the stopper pin is urged so as to press into the inner surface of the housing. It is characterized by being configured to fit in the hole.

[0007]

[Action]

 The biasing force is not acting on the stopper pin before the key cylinder is inserted into the housing.

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 convex portion of the key cylinder as a fulcrum.

In response to the rotation of the elastic piece, the stopper pin provided at one end of the elastic piece is urged so as to come into pressure contact with the inner surface of the housing, and the front end portion of the stopper pin is pressed. The key cylinder fits into the fitting hole on the housing side, and then fits into the fitting hole, so that the key cylinder is attached to the housing in a retaining state.

[0010]

【Example】

 Hereinafter, one embodiment in which the present invention is applied to a key cylinder device for an automobile ignition will be described with reference to FIGS.

The housing 11 has a tubular shape, and a fitting hole 12 in a penetrating state is formed in a predetermined portion of the peripheral wall portion 11a thereof.

The key cylinder 13 inserted into the housing 11 is formed by rotatably housing 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 insertion and rotation.

A groove-like recess 16 is formed on the outer peripheral portion of the cylinder case 14 which is the outer peripheral portion of the key cylinder 13 so as to extend in the axial direction thereof. A convex portion 17 is formed in the middle portion of the concave portion 16, and a hole portion 18 is formed in the rear portion (tip side) of the concave portion 16.

The elastic piece 19 is formed of, for example, an iron plate, and is arranged in the concave portion 16 with the intermediate portion being 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 V-shaped bent portion 21 is provided at the other end. Has been formed.

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

Then, the key cylinder 13 is attached to the housing 11 as follows.

In a state before the key cylinder 13 is inserted into the housing 11, as shown in FIG. 2, the stopper pin 22 is accommodated in the recess 16 of the cylinder case 14, and the elastic piece 19 is provided. The bent portion 21 side, which is the other end portion of the, is projected outward from the recess 16.

In this state, the key cylinder 13 is inserted into the housing 11 from the tip end side thereof in the direction of arrow A. At this time, since the stopper pin 22 is accommodated in the recess 16, the stopper pin 22 is also accommodated 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. 2 with the convex portion 17 as a fulcrum. It In response to the rotation of the elastic piece 19, the stopper pin 22 is biased in the direction of the arrow C, which is the inner surface side of the housing 11, and as shown in FIG. 11 is fitted into the fitting hole 12 at a position corresponding to the fitting hole 12.

As a result, the key cylinder 13 is attached to the housing 11 in a retaining state.

According to this embodiment, since the elastic piece 19 is in the free state on the bent portion 21 side before the key cylinder 13 is inserted into the housing 11, it functions as a so-called plate spring. Since the stopper pin 22 is not biased by the elastic piece 19, the stopper pin 22 is pressed against the biasing force when the key cylinder 13 is inserted into the housing 11. Therefore, the key cylinder 13 can be easily inserted into the housing 11.

When the key cylinder 13 is inserted into the housing 11, the elastic piece 19 functions as a leaf spring, and the urging force of the elastic piece 19 causes the stopper pin 22 to engage the fitting hole 12 of the housing 11. The key cylinder 13 can be attached to the housing 11 so as not to come off, as in the conventional case.

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

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

[0025]

[Effect of the device]

 As is clear from the above description, according to the present invention, when the key cylinder is inserted into the housing, it is not necessary to hold the stopper pin against the urging force, so that the key cylinder is not attached to the housing. It has an excellent effect that the wearability can be improved.

[Brief description of 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 it is inserted into the housing.

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

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

[Explanation of symbols]

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

Claims (1)

[Scope of utility model registration request] 1. A housing having a tubular 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 formed on the outer peripheral portion of the key cylinder and formed in the key cylinder. An elastic piece swingably supported by the raised portion 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. Is brought into contact with the inner surface of the housing and the elastic piece is rotated about the convex portion as a fulcrum, the stopper pin is urged so as to come into pressure contact with the inner surface of the housing and fitted into the fitting hole. A key cylinder device having the above structure.