JPS58139846A - Safety device of steering lock - Google Patents

Abstract

PURPOSE:To facilitate the assembling work and make the device smaller by a structure wherein a solenoid, which allows to pivot the key of the steering lock during the running, and a warning switch, which detects the movement of a solenoid plunger caused by the insertion of the key, are integrally provided. CONSTITUTION:A key detecting member 13 is provided in a hole 21, which is formed perpendicular to the key hole 20 of a rotator 12, in such a manner that the key detecting member 13 protrudes in the key hole 20. The upper end of the key detecting member 13 contacts with the inner end part 25 of the plunger 15 comprising the iron core of the solenoid 14. A flange 24, which is pressed against a housing 10 at all times by means of a spring 16 supported to a frame 22, is fixed at the middle of said plunger 15. A slant face 18 formed at the upper end of the plunger 15 contacts with the push button of the warning switch 19 fixed to the frame 22. Said switch 19 detects whether a key 30 is in the key hole 20 or not.

Description

[Detailed description of the invention] There are things about locking devices.

Conventional steering opening devices of this type have a large number of parts because the solenoids, warning switches, and angle detection switches that detect the rotational position of the key are each installed in separate positions. The disadvantages are that the assembly work becomes complicated, and the shape becomes larger.

An object of the present invention is to integrally form a solenoid and a warning switch in order to eliminate such drawbacks.

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

A low take 12 is rotatably disposed within a case 11 fixed within a housing 10 of the steering lock.

A key hole 20 is formed in the low take 12 as is known in the art. A key detecting member 13 protrudes from the key hole 20, which is accommodated in a hole 21 formed at right angles. The lower end of this key detection member is always pressed against the side wall of the keyhole 20 by the spring 16, and the upper end thereof contacts the inner end 25 of the plunger 15. The plunger 15 constitutes an iron core of the solenoid 14, and a coil 17 is fixed to the frame 22 above the plunger 15.

The frame 22 has a substantially trapezoidal shape, and its lower end is fixed to the housing 10 of the steering lock with screws 23.

A flange 24 is fixed approximately at the center of the planar jar 15, and this flange 24 is constantly pressed against the housing 10 by a spring 16 supported by the frame 22. A slope 18 is formed at the upper end of the plunger 15, and a frame 22
makes contact with the push button of the warning switch 19 fixed to the button. The warning switch 19 has a function of detecting whether or not the key 30 is inserted into the raw data 12, as is well known.

When driving a car, the key 30 is inserted into the key hole 20 of the low take 12 of the steering lock, and at this time the key detection member 13 moves radially outward. In order to smoothly move the key detecting member, a slope (not shown) is formed on the inner end of the key detecting member that contacts the key. When the key detection member 13 moves outward against the spring 16 as described above, the inner end 25 of the plunger 15 moves to [j-take 12
When the key is rotated, the cam surface 26
Slide relatively on top.

In addition, since the plunger 15 moves upwards when the key is inserted, the warning switch 19 is set to °, diagonal + r + i l
It turns ON by moving 8.

When the key is turned to the ON position of the steering wheel (later, while driving), the inner end 25 of the planar jar 15 engages with the step 27 formed on the cam surface 26. The door cannot be turned to the rear position, and therefore the key cannot be removed.When the automatic train is stopped 1 or more, when the key is turned to OFF, the solenoid 14 is activated, so the plunger 15 is retracted and the step 27 is turned to the OFF position. The key can be rotated to the open position without locking the key.

As described below, in the present invention, the solenoid and warning switch are assembled into one unit, so that the assembly work can be easily performed and the device can be miniaturized, which brings about practical effects.

[Brief explanation of drawings]

The figure shows one embodiment of the present invention, and FIG. 1 is A-A in FIG. 2.
A sectional view along line A, and FIG. 2 shows a side view. 10...Housing, 12...Low take, 1
3...Key detection member, 14...Solenoid, 1
5...Plunger, 16...Spring, 19...
Warning switch, 2o...key hole, 25...
Inner end, 26...cam surface, 27...stepped portion,
3o...key. Patent applicant: Kokusan Metal Industry Co., Ltd. Representative: Patent attorney Akira Irie

Claims (1)

[Claims] I [When the steering port key is rotated to the lock position during operation, the inside of the solenoid plunger that contacts the cam surface of the steering port has a solenoid that prevents this rotation. The end portion is characterized in that a spring advances one end of the key detection member into the key hole in the key lock position, and that a warning switch and a solenoid are integrally provided to detect movement of the solenoid plunger when the key is inserted. Steering port, safety device.