JPH0544212Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The invention is such that when a key in the first unlock position is pressed, the key can be rotated to the lock position, and the key is turned to the lock position. This invention relates to a steering lock device that locks the steering wheel when the steering wheel is rotated.

(Prior art) Conventionally, when the ignition key is turned from the "ON" position to the "ACC" position, the key is prevented from being turned to the "LOCK" position. A lock cam connected to the key rotor is provided with means for regulating the rotation when the key rotor is rotated from the "ON" position to the "ACC" position, and when the key is pressed in the "ACC" position, the rotation is restricted. is released and can now be rotated to the ``LOCK'' position.

(Problem that the invention aims to solve) However, with the conventional device, if you press the key from the "ON" position and turn it toward the "ACC" position, there is no restriction at the "ACC" position. Just pass the "ACC" position and press "LOCK".
Sometimes it was rotated to different positions.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a steering lock device that can reliably restrict rotation from an unlocked position to a locked position even if an erroneous operation is performed.

[Structure of the device] (Means for solving the problems) The device of the present invention can be rotated between a plurality of unlock positions and a single lock position by inserting a key, and can be moved in the axial direction by pressing the key. A key rotor is provided on the cylinder body, and a lock cam is provided that controls a lock member that is rotated by the key rotor to lock and unlock the steering wheel, and a lock cam is provided on either the inner periphery of the cylinder body or the outer periphery of the key rotor. A portion is provided on the other of the inner periphery of the cylinder body or the outer periphery of the key rotor, and when the key rotor is rotated from the unlock position toward the lock position without being pushed in, the key rotor is positioned at the first unlock position adjacent to the lock position. It engages with the protrusion to restrict rotation of the key rotor, and when the key rotor is pushed in at the first unlocked position, the engagement with the protrusion is released and the key rotor rotates to the lock position. A first regulating convex portion is provided on the other of the inner periphery of the cylinder body or the outer periphery of the key rotor, and when the key is pressed in the second unlock position, the key is moved toward the first unlock position. A second regulating protrusion is provided which engages with the protruding part to prevent the key rotor from rotating when the key rotor is about to rotate. This feature prevents the key rotor from inadvertently rotating from the unlocked position to the locked position.

(Function) According to the above means, when the key is rotated from the second unlocked position to the first unlocked position, the rotation is restricted at the first unlocked position, and the key is rotated at the first unlocked position. When the key is pressed in, rotation to the lock position is allowed, and when the key is pressed in from the second unlocked position and attempts to rotate toward the first unlocked position, the second restriction protrusion Since the key rotor is prevented from rotating at the second unlocked position due to the action of The present invention is characterized in that it is possible to reliably avoid a situation in which the key cannot be rotated and the key rotor is rotated to the lock position.

(Example) An example of the present invention will be described below with reference to the drawings. In FIG. 3, reference numeral 1 denotes a steering wheel, which is fixed to the upper end of a steering shaft 3 that passes through a steering tube 2. A flange-shaped base 4 is fixed to the upper end of the steering tube 2 by welding or the like, and a shell 5 made of, for example, plastic is fixed to this by screws, and the steering wheel 1 is attached to this shell 5.
A combination switch 6 for controlling the damascene and wiper is fixed to the boss portion 1a of the vehicle. Reference numeral 7 denotes a cylinder insertion hole opening at the right end of the shell 5, into which a key cylinder 8 is inserted. The key cylinder 8 will be described in detail below. In FIGS. 1 and 2, 9 is a cylindrical cylinder body, and a key rotor 11 having a key hole 10 is disposed on the inner periphery of the cylinder body. This key rotor 11 has a stepped portion 11a in the middle, and the open end side of the cylinder body 9 is formed to have a larger diameter. 12
are a plurality of lock plates disposed on the key rotor 11, which are biased in the direction of arrow A by a coil spring (not shown), and the key rotor 11 is
As shown in the figure, when the key is in the "LOCK" position, it fits into the lock groove 13 of the cylinder body 9 to lock the rotation of the key rotor 11, and the key is inserted into the key hole 10. 14 is inserted, the entire lock plate 12 is flush with the outer peripheral surface of the key rotor 11 as shown in FIG. 2, and the key rotor 11 is rotated in the direction of arrow B as shown in FIG. When the lock is rotated in the direction of arrow B, the first unlock position is "ACC", and the second unlock position is "ON".
position and the “START” position. 1
Reference numeral 5 denotes a stepped hole continuously formed at the rear end of the cylinder insertion hole 7, into which a lock cam 16 for a steering lock is rotatably inserted. A connecting shaft portion 11b protruding from the rear end of the key rotor 11 is inserted into the connecting hole 16a provided in the lock cam 16, and the rotation of the key rotor 11 is controlled by the lock cam 1.
6. 17 is connecting hole 1
The key rotor 11 is always urged in the direction of arrow C, that is, outward, by the urging force of the coil spring 17, which is housed with one end caulked to the rear end of the key rotor 6a. Reference numeral 18 denotes a lock member driven by the lock cam 16, which is always urged in the direction of arrow D by a coil spring 19, and which is driven by the lock cam 16.
When the locking member 18 is placed in the "LOCK" position as shown in FIG.
The distal end of the steering wheel 1 engages with a locking groove (not shown) on the outer periphery of the steering shaft 3 to lock the rotation of the steering wheel 1. 2
0 is a switch insertion hole provided in the shell 5 so as to sandwich the stepped hole 15 and face the cylinder insertion hole 7, into which the ignition switch 21 is inserted. The lock cam 1 is inserted into the connecting hole 22a of the rotor 22 of this ignition switch 21.
The rear ends of the keys 6 and 6 are connected to each other by insertion, so that the rotor 22 rotates integrally with the key rotor 11 via the lock cam 16. Now, reference numeral 23 denotes a convex portion protruding from the inner peripheral portion of the cylinder body 9 so as to face the stepped portion 11a of the key rotor 11.
When the key rotor 11 is rotated to the "ACC" position and is not pressed, a first regulating protrusion is located opposite to the protrusion 23 and restricts the key rotor 11 from being rotated in the opposite direction of arrow B. A portion 24 is provided protruding from the outer peripheral portion of the key rotor 11. This first regulating protrusion 2
4 and the stepped portion 11a, when the key rotor 11 is pushed in the opposite direction of arrow C against the coil spring 17, the key rotor 11 is rotated to the "LOCK" position by allowing the convex portion 23 to pass through. A groove 25 is formed to allow movement. First regulating convex portion 2
4 is formed with an inclined surface 24a facing the groove portion 25. On the other hand, the key rotor 11 is attached to the stepped portion 11a.
A concave portion 26 is formed that faces the convex portion 23 when the is rotated to the “ON” position. This stepped portion 11a has a second regulating protrusion 27 that engages with the protrusion 23 and restricts the rotation when the key rotor 11 attempts to rotate from the "ON" position to the "ACC" position. is formed. The second regulating protrusion 27 has an inclined surface 27 that guides the key rotor 11 in the direction of arrow C when the key rotor 11 is rotated from the "ACC" position to the "ON" position.
a is formed.

Next, the operation of the above configuration will be explained.
Keyhole 1 of key rotor 11 in “LOCK” position
1 and 2, the key 14 is rotated by the key 14 in the direction of arrow B, and the key rotor 11 is in the "ACC" position.
When the lock member 18 is rotated to the position, the lock cam 16 is rotated and the lock member 18 is moved in the opposite direction of arrow D against the coil spring 19.
The tip of the steering wheel 1 escapes from the lock groove (not shown) of the steering shaft 3 to unlock the steering wheel 1 and enter the unlocked state. At the same time, the rotor 22 is rotated in the direction of arrow B via the lock cam 16, so that the ignition Shion switch 21
is switched to the "ACC" ON state. When the key rotor 11 is further rotated in the direction of arrow B by the key 14, the key rotor 11 is turned "ON" and "START".
The state of the ignition switch 21 changes accordingly.
The operation of locking and unlocking the steering wheel 1 is substantially the same as that of the conventional one. On the other hand, when the key 14 is rotated in the direction opposite to arrow B from the "ON" position, if the key 14 is further rotated in the direction opposite to arrow B beyond the "ACC" position, the first regulating protrusion 24 When the side surface comes into contact with the convex portion 23, its rotation is restricted (sixth
(see figure). However, when the key rotor 11 is pushed in the opposite direction of arrow C against the coil spring 17 using the key 14 in the "ACC" position, the first regulating protrusion 24 is brought into a state where it does not face the protrusion 23, and the Since the groove 25 faces the convex portion 23, when the key 14 is operated in the direction opposite to arrow B, the key rotor 11 is rotated in the same direction and placed in the "LOCK" position (see FIG. 5).
Then, in this "LOCK" position, the key 14 can be removed from the keyhole 10. On the other hand, when the key 14 is pushed in the direction of arrow C against the coil spring 17 in the "ON" position shown in FIG. 7, the concave part 26 is fitted into the convex part 23 as shown in FIG. However, when the key 14 is attempted to be rotated in the opposite direction of arrow B from this state, the second regulating convex portion 27 moves against the convex portion 23.
The key rotor 11 is restricted from rotating to the "ACC" position in order to come into contact with the "ACC" position. Therefore, the erroneous operation of immediately pressing the key 14 from the "ON" position and rotating it toward the "ACC" position is prevented. Therefore, when rotating from the "ON" position to the "ACC" position, be sure to press the key 1.
You will have to rotate without pressing 4, so "ACC"
When the position is reached, the first regulating convex portion 24 comes into contact with the convex portion 23 as described above, and the rotation is once restricted at the "ACC" position (see Fig. 6), and the "LOCK" position is reached.
It is reliably prevented from being rotated into position.

According to the above configuration, from the "ON" position to the "ACC"
When the key 14 is rotated toward the position,
When the first regulating protrusion 24 comes into contact with the protrusion 23 in the "ACC" position, its rotation is regulated, and when the key 14 is pressed in the "ACC" position, it moves to the "LOCK" position. When rotation is allowed and key 14 is pressed from the "ON" position, press "ACC".
If you try to rotate the key 14 toward the "ON" position, the rotation will be restricted because the second restricting protrusion 27 comes into contact with the protrusion 23, so just press the key 14 from the "ON" position and rotate it. Even if such an erroneous operation is performed, it is possible to reliably prevent the key 14 from being turned to the "LOCK" position.

[Effect of the invention] As is clear from the above explanation, the present invention has the second
Even if an erroneous operation is performed, such as attempting to turn the key toward the lock position while the key is pressed in at the second unlock position, the rotation of the key will be reliably regulated at the second unlock position. This has excellent practical effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal cross-sectional side view of the main part, Fig. 2 is a cross-sectional view of the main part, Fig. 3 is a side view, and Fig. 4 is a cross-sectional view of the main part. The enlarged side views and FIGS. 5 to 8 are action explanatory diagrams showing different operating states. In the drawing, 8 is a key cylinder, 9 is a cylinder body, 11 is a key rotor, 14 is a key, 18 is a locking member, 23 is a convex portion, 24 is a first regulating convex portion, 2
5 is a groove portion, and 27 is a second regulating convex portion.

Claims (1)

[Scope of utility model registration request] A key rotor is provided on the cylinder body and is rotated between a plurality of unlock positions and a single lock position by inserting a key, and is moved in the axial direction by pressing the key, and a steering wheel is rotated by the key rotor. a lock cam that controls a lock member that locks and unlocks the key rotor by its rotation; a convex portion provided on either the inner periphery of the cylinder body or the outer periphery of the key rotor; a first one provided on the other of the inner periphery or the outer periphery of the key rotor and adjacent to the lock position when the key rotor is rotated from the unlock position to the lock position without being pressed;
At the first unlock position, the key rotor engages with the convex part to restrict rotation of the key rotor, and when the key rotor is pushed in at the first unlock position, the key rotor disengages from the convex part and the key rotor moves to the first unlock position. A first regulating protrusion that allows the key to rotate to the lock position; and a second regulating protrusion provided on the other of the inner periphery of the cylinder body or the outer periphery of the key rotor so as to face the protrusion; a second regulating protrusion that engages with the protrusion and prevents rotation of the key rotor when the key rotor attempts to rotate toward the first unlocked position in a pushed-in state; Device.