JPH062184Y2 - Ignition switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Use of the Invention] The present invention relates to an improvement of an ignition switch in a steering lock.

[Background of the invention]

A conventional ignition switch incorporated in a steering lock for an automobile includes, for example, one shown in FIG. Reference numeral 1 is a steering lock, 2 is a frame, 3 is a cylinder housing mounted in the frame 2, 4 is a rotor incorporated in the cylinder housing 3, 5 is a key inserted into the rotor 4, 6 Is a cam that rotates together with the rotor 4, and a lock piece 7 is engaged with the cam 6. Reference numeral 8 denotes a steering shaft located in the steering column 9, and when the key 5 is pulled out from the rotor 4, the key stopper 7 causes the spring 1 to move.
The steering shaft is locked with a pressing force of zero. Reference numeral 11 is a coil spring mounted around the rotor 12, and both ends of the coil spring 11 are bent and formed into arm portions 11 'and 11 ".
Is a cylindrical case of an ignition switch, and inside the case 13, a movable contact plate 15 interlocking with the rotor 4 and provided with a movable contact 20 is installed, and in this case 13, An insulative base 17 having a fixed contact 16 for contacting and separating the movable contact 20 is fitted. A connector terminal 19 is located on the outer end surface of the insulating base 17, and the connector terminal 19 is
It is connected to the fixed contact 16 by a caulking means.
Reference numeral 14 is a spring for elastically pressing the movable contact plate 15 to the fixed contact 16, and 18 is a bottomed hole formed in the rotor 12 and having a chevron cross section, and is rotated in the bottomed hole 18. Child 4
The shaft 6'of the cam 6 that rotates together with the
The rotor 4 and the rotor 12 are integrally connected. Furthermore, the rotor 1 of this ignition switch
In order to give a feeling of moderation at the time of the rotating operation, the spherical body 21 is provided at two places in the diametrical direction of the rotor 12.
A recess 22 for inserting the sphere 21 is provided, and a spring 23 for elastically pressing the sphere 21 against the inner peripheral surface of the case 13 is provided in the recess 22 to connect the sphere 21 and the case 13. It is configured to be pressed to obtain a moderation sensation when the rotor 12 rotates.

However, since the rotor 12 is provided with the sphere 21 and the pressing springs 23 for the sphere 21 at two locations in the diametrical direction, two spheres and two springs are required, which increases the number of parts. There was a problem.

[Purpose of device]

The present invention has been made in view of the above-mentioned conventional problems, and particularly provides an ignition switch having a structure in which the number of parts used is reduced by using the sphere and the spring one by one. The purpose is to do.

[Example of device]

The present invention will be described in detail below based on the embodiment shown in FIG. 1. The same parts as the structure in this embodiment and the structure shown in the conventional example are designated by the reference numerals cited in the conventional example. The description of the structure is omitted.

That is, the rotor 12 of the ignition switch according to the present embodiment is provided with a single recess 22 in the radial direction, and the spring 23 and the sphere 21 pressed against the inner wall surface of the case 13 by the spring 23 are provided in the recess 22. It is fitted and held. The rotor 12 is provided with a spherical projection 24, which replaces the spherical body 21, at a position diametrically symmetrical to the spherical body 21, and the projection 24 is pressed against the inner wall surface of the case 13 by the reaction force of the spherical body 21. It is what

As described above, the rotor according to the present embodiment is provided with only one spherical body 21, but the spherical projection 24 that replaces the spherical body is provided at a position symmetrical to the spherical body 21, and the spherical projection is further provided. Reference numeral 24 is a reaction force of the spherical body 21 pressed by the spring 23, and is elastically pressed against the inner wall surface of the case 13. Therefore, since the rotor 12 is elastically pressed against the inner wall surface of the case 13 at two points in the diameter direction, the rotation of the rotor 12 similar to the conventional example can be achieved while reducing the members of the spherical body 21 and the spring 23 by half. There is an effect that moderation can be obtained.

[Outline of device]

As described above, according to the present invention, the rotor 12 is housed in the cylindrical case 13.
And an insulating base 17 that houses a movable contact plate 15 mounted so as to rotate integrally with the rotor 12, and a fixed contact 16 that contacts the movable contact 20 provided on the movable contact plate 15 is fixed. A spherical body 21 that closes the cylindrical case 13 and is elastically urged outward by a spring 23 in a hole 22 formed in the peripheral surface of the rotor 12.
And the spherical body 21 is pressed into contact with the concave portion formed on the inner peripheral surface of the cylindrical case 13, and the spherical case 21 of the cylindrical case 13 is provided at a position diametrically symmetrical to the hole 22 on the peripheral surface of the rotor 12. The ignition switch is characterized in that a protrusion 24 that slidably contacts the inner peripheral surface is provided.

[Effect of device]

Therefore, according to the ignition switch of the present invention, the spherical projection 24 that replaces the spherical body is provided at a position symmetrical to the single spherical body 21.
Is elastically pressed against the inner wall surface of the case 13 by the reaction force of the sphere 21 pressed by the spring 23. Therefore, since the rotor 12 is elastically pressed against the inner wall surface of the case 13 at two points in the diameter direction, the rotor 1 similar to the conventional example can be obtained while reducing the members of the spherical body 21 and the spring 23 by half.
There is an effect that a rotation moderation of 2 is obtained.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing a main part of an ignition switch according to the present invention, and FIG. 2 is a sectional view showing a conventional ignition switch. 12 ... Rotor, 13 ... Cylindrical case 21 ... Sphere, 23 ... Spring 24 ... Convex

Claims (1)

[Scope of utility model registration request] 1. A movable contact plate mounted in a cylindrical case (13) so as to rotate integrally with the rotor (12).
The cylindrical case (13) is housed in an insulating base (17) containing a fixed contact (16) that accommodates (15) and is in contact with the movable contact (20) provided in the movable contact plate (15). The spring (23) is closed in the hole (22) formed in the peripheral surface of the rotor (12).
The sphere (21) that is elastically urged toward the outside is accommodated by pressing the sphere (21) into the recess formed in the inner peripheral surface of the cylindrical case (13), and the rotor ( An ignition switch characterized in that a protrusion (24) slidably contacting the inner peripheral surface of the cylindrical case (13) is provided at a position diametrically symmetrical to the hole (22) on the peripheral surface of (12).