JPS6215380B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steering lock, a so-called two-operation type steering lock.

Conventionally, regarding this type of steering lock,
Special Publication No. 51-42378 was issued. This is done by turning the ignition switch 4 on as shown in Figures 1 and 2.
0 and a key cylinder 42 connected to this via a cam 41. When the key cylinder 42 is rotated clockwise (from the LOCK position to the ON position) in FIG. 2 in order to start the engine, the key cylinder The claw 42a of 42 collides with the protrusion 43b of the operation ring 43, and the ring 43 is moved to the key cylinder 42.
This causes one end 45 of the pin 45 supported by the cylinder housing 44 to be rotated clockwise.
When the pin 45 is released, it is pressed against the elasticity of the spring 46, and the other end 45b of the pin 45 is pressed against the cam 41.
is inserted into the notch 41a.

Therefore, when the key cylinder 42 is rotated from the ON position to the LOCK position in an attempt to stop the engine, that is, when the key cylinder 42 is rotated counterclockwise, the other end 45b of the pin 45 that is engaged in the notch 41a is notched. The end portions 41b of the key cylinders 41a and 41b collide with each other, and the key cylinder 42 stops at the OFF position. So Linda 43
If you rotate the pin 45 counterclockwise, one end 45 of the pin 45
a again fits into the recess 43c and the pressing force of the pin 45 is released, so that the other end 45b of the pin 45 has a notch 41.
a, then release the key cylinder 42.
The purpose is to ensure reliable and safe operation of the steering lock by rotating it to the LOCK position.

However, such a device has a drawback of being expensive due to its complicated structure.

SUMMARY OF THE INVENTION The object of the present invention is to provide a steering lock which can eliminate the drawbacks of the conventional ones as described above.

The present invention will be explained in detail below based on the embodiments shown in FIGS. 3 to 7.

A key cylinder 3 is provided in the cylindrical frame 2 of the steering lock 1, and a first rotor 4 is fitted inside the key cylinder 3. The first rotor 4 can be rotated by inserting the key 5 into the groove 6 and then rotating the key 5. 7 is the first
A cam connected to the rotor 4 of the cam 7, a hook piece 8' provided on a bolt 8 is in contact with the cam 7,
When the key 5 is removed from the first rotor 4, the tip of the bolt 8 is locked in the notch of the steering shaft 10 by the elastic force of the spring 9, so that the steering shaft 10 cannot be rotated. ing. When the key 5 is inserted into the keyway 6 and the first rotor 4 is rotated, the lock 8 is pulled up against the elastic force of the spring 9 by the action of the cam 7 connected to the rotor 4. , the steering shaft 10 is unlocked. 1
1 is a rotating shaft formed integrally with the cam 7,
The rotating shaft 11 passes through a case 13 that is a component of the ignition switch 12 and is connected to a second rotor 14 rotatably housed within the case 13. The second rotor 14 has bottomed holes 1 at two locations in the diametrical direction.
5 are formed in the bottomed holes 15, and each slider 16 is provided in each of the bottomed holes 15.
A spring 17 is housed therein for biasing it to protrude from inside. Further, a recess 18 is formed in the inner circumferential surface of the case 13, into which the tip of the slider 16 is pushed to provide a sense of moderation in the rotation of the second rotor 14, that is, in the rotation operation of the key 5. has been done. 19 is an engagement protrusion formed on a part of the end surface of the second rotor 14, and 20 is a rod-shaped sliding member 21.
As clearly shown in FIG. 5, this engaging projection 19 is formed to protrude in the axial direction of the second rotor 14. The locking projection 20 is formed in a hook shape so as to fit under the engagement projection 19, that is, at the tip of the sliding member 21. 22 is a bracket through which the sliding member 21 is inserted and held;
This bracket 22 is attached to the outside of the cylindrical frame 2, and furthermore, a spring 23 is installed inside the bracket 22 to always bias the sliding member 21 in the upward direction. 24 is a contact attached to the second rotor 14, 25 is a spring for bringing the contact 24 into elastic contact with a terminal 27 attached to a cover plate 26, 28 is a lid, and 29 is a member through which the sliding member 21 is inserted. 30 is a knob attached to the end of the sliding member 21, and 31 is a shell cover.

The above is the configuration of the present embodiment.Next, the operation will be described.In the above embodiment, when the steering shaft 10 is unlocked by the bolt 8, that is, when the engine is started, the key 5 is turned off as shown in FIG. When the slider 16 rotates sequentially from the LOCK position to the OFF, ACC, ON, and START positions, the slider 16 is pressed by the spring 17 and moves into the plurality of depressions 18 provided on the inner peripheral surface of the case 13.
Rotate while crossing. At that time, the hand holding key 5,
Gives a sense of moderation in rotation.

Now, turn key 5 from the ON position to stop the engine.
When returned to the ACC position, the engaging protrusion 19 collides with the locking protrusion 20, preventing the key 5 from moving back. That is, the key 5 cannot be turned to the LOCK position, and the steering shaft 10 cannot be locked. So knob 3
0, the sliding member 21 is pushed down against the elasticity of the spring 23 and the locking projection 20 also descends, so that it engages with the locking projection 20 as shown in FIGS. 5 and 6. The collision with the mating protrusion 19 is released,
Thereby, the key 5 can be rotated to the LOCK position and the steering shaft 10 can be locked.

As described above, the present invention provides a steering lock in which the ignition switch 12 having the rotary member 14 that reciprocates with the key 5 is accommodated in the cylindrical frame 2. A sliding member 2 is provided with a protruding locking projection 19, has an engaging projection 20 at its inner end that engages with the engaging projection 19, and has an outer end extending outside the cylindrical frame 2.
1 is attached to the cylindrical frame 2 by urging the locking protrusion 20 to always protrude within the rotation range of the engagement protrusion 19, and the engagement protrusion 19 displaces the locking protrusion 20. During the backward movement of the rotating member 14 which has reached the forward movement limit position, the locking protrusion 20
A steering lock characterized in that the engagement protrusion 19 engages to restrict the backward movement of the rotating member 14, and the restriction is released by pressing the outer end of the sliding member 21. Therefore, according to this steering lock, the pressing operation of the sliding member to release the collision between the engaging protrusion and the locking protrusion provided on the rotating member and the rotating operation of the key are performed in parallel. Since it is not possible to lock the steering wheel if the steering wheel is not locked, this operation requires both hands or even one hand. This eliminates the possibility of accidentally locking the steering wheel while driving, for example. This has the effect of improving safety during driving and providing a steering lock with a simple structure and low cost. Further, according to the present invention, the rotating member 1 provided in the ignition switch 12
4 is configured so that it can also be used as a locking member for the sliding member 21 for two operations, so when constructing a two-operation type steering lock, the conventionally used cam member can be replaced. There is an effect that can be omitted. Furthermore, according to this steering lock, since the through hole through which the sliding member 21 passes is provided in the housing of the ignition switch 12, the sliding member 21 can be held through the frame 2 of the key cylinder. There is no need to drill a through hole for this purpose, and there is also the effect of eliminating the risk of the key cylinder being tampered with from the outside by exploiting the through hole.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a main part of a conventional steering lock, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a sectional view of a steering lock according to the present invention, and Fig. 4 is a sectional view of a conventional steering lock.
5 is an enlarged sectional view of the main part, FIG. 6 is a front view of the same as above, and FIG. 7 is a sectional view taken along the line. DESCRIPTION OF SYMBOLS 1... Steering lock, 2... Cylindrical frame, 3... Key cylinder, 4... First rotor,
5...key, 6...keyway, 7...cam, 8...bark,
9... Spring, 10... Steering shaft, 11...
Rotating shaft, 12...Ignition switch, 13
... Case, 14 ... Second rotor, 15 ... Bottomed hole, 16 ... Slider, 17 ... Spring, 18 ...
Recess, 19... Engaging protrusion, 20... Locking protrusion, 2
1...Sliding member, 22...Bracket, 23...
Spring, 24... Contact, 25... Spring, 26... Lid plate, 27... Terminal, 28... Lid, 29... Tube, 30... Knob, 31... Shell cover.

Claims (1)

[Claims] 1. In a steering lock in which an ignition switch 12 having a rotary member 14 that reciprocates with the key 5 is accommodated in a cylindrical frame 2, an engagement protrusion 19 protruding in the axial direction is provided on an end surface of the rotary member 14. The inner end has a locking projection 20 that engages with the engaging projection 19, and the outer end is a cylindrical frame 2.
The sliding member 21 extending to the outside of the locking protrusion 2
0 is attached to the cylindrical frame 2 by urging it so that it always projects within the rotation range of the engagement protrusion 19, and the engagement protrusion 19 displaces the locking protrusion 20 to the forward movement limit position. During the backward movement of the rotating member 14, the engaging protrusion 19 engages with the locking protrusion 20 to restrict the backward movement of the rotating member 14. A steering lock characterized by being released by pressing the end.