JPS5849411B2 - steering lock couch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steering lock device for locking a steering shaft of a gasoline engine vehicle such as an automobile in conjunction with the action of an engine starting key.

Conventionally, in order to prevent vehicle theft, a steering lock device locks the steering shaft by operating a key, but the steering lock operation can be performed by simply turning the key to the LOCK position and then removing the key. Therefore, even if the driver does not intend to lock the steering wheel, for example, if the driver tries to turn the steering wheel to the ACC position but accidentally turns it to the LOCK position, and the key falls out for some reason, the steering wheel will automatically lock. There is a possibility that the steering wheel will become overloaded, creating a serious danger that the steering wheel will become inoperable.

To prevent this risk, for example, lock the key
In order to turn the key to the K position, a separately provided push button must be pressed, and in this state the key must be turned in order to reach the LOCK position, so a two-move mechanism has been proposed.

However, in this case, both hands are required to carry out the two operations, and furthermore, since the operating position is biased towards the key cylinder portion, there is a drawback that it is very difficult to perform the operations.

The present invention solves these drawbacks, and the key is
To provide a steering lock device for a gasoline vehicle, which displaces a key in the axial direction when turning it to the OCK position, and makes it impossible to set the key to the LOCK position unless it is turned in this state.

The present invention will be explained below with reference to embodiments of the drawings.

1 to 6, a device main body 1 is attached to a steering column 3 outside a steering shaft 2, and a switch device 4 is installed inside the main body 1 in a direction perpendicular to the steering shaft 2. ,
10,000 lock stages, eccentric shaft 20, holder 30, operating body 40
and a locking lever 5.

As shown in FIGS. 1 and 2, the lock stage 10 has an engaging groove 11.
It consists of a movable lock par 12 having a movable lock par 12, a contact piece 13 attached to one side of the lock par 12, and a spring 15 interposed between the contact piece 13 and a punto 14 fixed to the main body 1, which steers the lock par 12 when moving downward. The steering shaft 2 is locked by protruding into the recess 16 of the shaft 2 and fitting therein.

The locking force bar 12 of the lock stage 10 is shown in perspective view in FIGS. 12 and 13.

The eccentric shaft 20 is arranged as shown in FIGS. 1 to 3 and 9.
As shown in the figure (longitudinal cross-sectional view), wheels 21 and 22 are arranged in parallel with the lock stage 10 and rotatably supported by the support parts 1a and 1b of the main body 1, respectively, a protrusion 26 that operates the switch device 4, It consists of a cam 23 that moves the locking member 12 up and down in contact with the contact piece 13, a pawl 24, and a hole 25 having a rectangular shape, and operates the switch device 4 and the lock stage 10.

As shown in FIGS. 1, 4, 5, and 6, and as shown in FIG. 9 (longitudinal sectional view) and FIG. By fitting the pin 33 biased by the spring 32 into the hole 31 of the eccentric shaft 2
Vertical surfaces 34 to 36 are installed coaxially next to the eccentric shaft 20 and are formed by changing the amount of protrusion in three stages at the end on the eccentric shaft 20 side, and a stopper 3 is provided on the most protruding surface 34.
7, the engaging piece 38, and a horizontal surface 39 as a step between the surfaces 35 and 36, and guides the operation of the operating body 40, which will be described later.

The surface 35 is formed as a first surface located closer to the eccentric axis than the surface 36, which is the second surface.

The operating body 40 is inserted into the holder 30 and inserted into the key hole 41 as shown in FIGS. 1, 4, 5, 7, and 11 (overall perspective view). When the key 42 is inserted, the lock with the holder 30 is released and the key is moved from the LOCK position to ST.
A protrusion 44 that is rotatably moved to the ART position is fitted to an end surface 48 on the eccentric shaft 20 side through a hole 25 of the eccentric shaft 20 and a spring 43, and a retaining piece 3 of the holder 30.
A contact piece 45 is provided at a position slightly offset from the end surface 48 of the contact piece 45 to contact the surface 35 of the holder 30 and the surface 36 one level below it.
The eccentric shaft 20 is operated.

The surfaces 35 and 36 of the holding body 30 are brought into contact with the contact piece 45 of the operating body 40, and
In the figure, the right side of the key insertion end is called the "outside".

) The engaging piece 38 of the holding body 30 acts as a stopper to limit the movement of the operating body 40 in the direction of the groove 4 of the operating body 40.
6, 47, and the end surface 48, and when the key 42 is pressed, the eccentric shaft 2
The 0 side is called the "inside".

) acts as a stopper that limits movement of the operating body 40 in the direction.

Further, the locking lever 5 has a retaining portion 6 at its tip and is provided extending from the holder 30 toward the lock stage 10,
When the key 42 is inserted into the key hole 41, it moves in the direction of the arrow 50 in FIG.
When the key 42 is removed from the key hole 41, the first
The engaging portion 6 swings in the direction of the arrow 51 in FIG.
The locking member 12 protrudes in the direction of arrow 52 in FIG. 13 and locks the steering shaft 2.

In addition, in such a structure, the operating body 40 with the key 42 inserted is in the ACC position and the 8TA position in a state that it protrudes outward due to the contact between the contact piece 45 and the surface 36 of the holder 30.
Rotate between the RT position and press the contact piece 45 inward so as to contact the other surface 35, and then move to the ACC position and the LOC position.
It is designed to be able to rotate between K positions.

Then, when the operating body 40 is rotated, the ACC position and ST
Between the ART positions, the feeding piece 38 of the holding body 30 is connected to the operating body 4.
0, the movement of the operating body 40 inward is blocked, and between the ACC position and the LOCK position, the engaging piece 38 fits into the arc-shaped first groove 46 lower than the end face 48. The operating body 40 can now be moved inward.

The operating body 40 into which the key 42 is inserted rotates between the LOCK position and the ACC position when pushed in, and rotates between the ACC position and the START position when pushed out.

Further, the second groove 47 of the operating body 40 is configured to fit with the engagement piece 38 of the holding body 30 and push the operating body 40 only when the operating body 40 is in the ON position together with the key 42. , this means that in this ON position, for example, the driver turns on the AC
In order to prevent you from passing through the ACC position and entering the LOCK position when you accidentally turn the key while trying to turn it to the C position, if there is force pressing the key at the ON position, is designed to warn the driver by making it impossible to turn the key, and the groove 47 does not fit into the engagement piece 38 during normal operation.

In addition, the claw 24 of the eccentric shaft 20 is set to the holder 3 at the STAR, T position.
0, the operating body 40 along with the key 42 hits the stopper 37.
This is to prevent the motor from rotating beyond the START position more than necessary.

The operation of the steering lock device of the present invention configured as described above will be explained with reference to FIG. 8. In the LOCK position, the operating body 40 moves the contact piece 45 outward (
The engaging piece 38 is fitted on one side of the groove 40 in contact with the first surface 35 on the inner side (on the eccentric shaft 20 side) with respect to the second surface 36 on the key insertion end side). At this time, as shown in FIG. 2, the cam 23 of the eccentric shaft 20 moves the locking par 12 to the lowest position, fitting its tip into the recess 16 of the steering shaft 2, and steering. Lock shaft 2.

Therefore, when the key 42 is inserted into the key hole 41 of the operating body 40 in this state, the operating body 40 becomes rotatable within the holder 30 and the locking lever 5 swings in the direction of the arrow 50 in FIG. The engaging portion 6 comes into contact with the locking member 12.

Next, when the operating body 40 is rotated to the ACC position by operating the key 42, the eccentric shaft 20 is rotated by the engagement of the protrusion 44 and the hole 25, and the switch device 4 is also operated by the protrusion 26, and the switch device 4 is operated by the protrusion 26. Powered into the electrical system.

Also, at this ACC position, the contact piece 45 comes off the surface 35 as shown in FIG. Then, the contact piece 45 comes into contact with the surface 35 to the surface 36, and the engagement piece 38 of the holder 30 and the groove 46 are also disengaged from each other.

Further, due to the rotation of the eccentric shaft 20 and the cam 23 at this time, the lock par 12 is moved upward against the force of the spring 15, and its tip is inserted into the concave portion of the steering shaft 2 at the location 1.
6, the steering locking action is released, and at the same time, as shown in b' in FIG. Since lock par 12 is cam 23
It remains in this state regardless of the

Next, as shown in FIG. 8C, the operating body 40 is pushed out together with the key 42 with the contact piece 45 and surface 36 in contact with each other and protruding outward.
When rotated to the N position, the eccentric shaft 20 operates the switch device 4 to turn on the ignition switch and the engine is ready to start.

Therefore, when the operating body 40 pops out together with the key 42 due to the contact between the contact piece 45 and the surface 36 from this ON position as described above, the claw 24 of the eccentric shaft 20 as shown in d of FIG.
When the motor is further rotated toward the START position where it hits the stopper 37, the eccentric shaft 20 operates the switch device 4 to drive the starter and start the engine.

Also, when the engine is running, the operating body 40 is turned off along with the key 42.
When the N position is returned to the ACC position, the ignition switch is turned off by the operation of the switch device 4 by the eccentric shaft 20, and the engine is stopped.

In this ACC position, the contact piece 45 is located at the end of the surface 36 as shown in FIG.
When the end 45a of the contact piece 45 comes into contact with the horizontal surface 39, it cannot rotate toward the LOCK position, and at this position, the engaging piece 38 of the holder 30 just touches the groove 56.
This allows the operating body 40 to move.

Therefore, when the operating body 40 is pushed inward together with the key 42 against the force of the spring 43, the end portion 45a is pushed into the surface 39.
The key 42 and the like are held in the pressed state by the contact between the contact piece 45 and the surface 35.

When the operating body 40 is pushed in together with the key 42 and returned from the ACC position to the LOCK position, the eccentric shaft 20
Electrical systems such as radios are also turned off by the operation of switch device 4.
The state becomes FF, and the cam 23 returns to the initial state together with the eccentric shaft 20.

However, when the key 42 is inserted in this LOCK position, the locking lever 5 maintains the swinging state it had when the key 42 was first inserted, and the engagement between the engaging portion 6 and the engaging groove 11 of the locking pawl 12 continues. The lock par 12 is held in an upwardly moved state.

Then, when the key 42 is pulled out from the key hole 41, the locking lever 5 swings in the direction of the arrow 51 in FIG.
Now the lock par 12 is free and the spring 1
It moves downward (in the direction of the arrow 52 in FIG. 13) with a force of 5, fits into the recess 16 of the steering shaft 2, and acts as a lock.

As described above, according to the steering lock device of the present invention,
When stopping the engine and locking the steering shaft 2, the key 42 is used to move from the ACC position to the LOCK position.
Since the action of rotating the key 42 requires another action of pressing the key 42, the danger of the driver easily turning the key 42 to the LOCK position with a single action and locking the steering wheel is prevented. .

In addition, the two operations can be performed using the key 42 without using both hands.
It is easy to operate because it can be operated with one hand.

Furthermore, even if the key 42 is turned to the LOCK position by the locking lever 5, unless the key 42 is pulled out, the steering shaft 2
Since it does not lock, the locking action does not need to be complicated.

In the present invention, the first
The second groove 46 is located at a position where the engagement piece 38 can be inserted when the operating body 40 is in a rotational position ranging from the LOCK position to the ACC position, and the second groove 47 is located at a rotational position when the operating body 40 is in the ON position. The engagement piece 38 is formed at a location where it can be inserted when the device is in the position shown in FIG.

When the driver attempts to change the key 42 from the ON position to the ACC position, if the driver accidentally pushes the operating body 40 deep and rotates it, the contact piece 45 will move against the surface 39 of the holder 30 when the operating body 40 is in the ACC position. L immediately from the ON position without touching the
There is a danger that the driver will be in the OCK position, but in the present invention, the driver can
When the operating body 40 is pushed in at the N position, the engagement piece 38
enters into the second groove 47 and the rotation of the operating body 40 is prevented, so that the driver is made aware of the erroneous operation and such a danger can be avoided.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of the steering lock device of the present invention, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a sectional view of Fig. 1.
FIG. 4 is a cross-sectional view taken along IV-IV in FIG. 1, FIG. VI-VI sectional view, Fig. 7 is the 1st
A view from the direction of the arrow ■ in the figure, a to d in FIG. 8 are explanatory diagrams showing each operating state of the main cam as seen from the key 42, and FIG. 9 is the leakage shaft in FIG. 1. FIG. 10 is a perspective view of the holding body when viewed from the blind shaft side, and FIG. 11 is a sectional view of the device when viewed from the eccentric shaft side. FIG. 12 is a perspective view of the steering lock device when the locking lever is in the unlocked state, and FIG. 13 is a perspective view of the steering lock device when the locking lever is in the locking state. FIG. 2... Steering shaft 4...
Switch device, 5. ...Locking lever, 1
0...Lock means, 12...Lock par 14...Groove, 20...Eccentric shaft, 2
3...Cam 30...Holding body, 35,
36, 39... surface, 38... engagement piece,
40... Operating body, 41... Key hole, 4
2...Key, 43...Spring, 4
5...Contact piece, 45a...End part, 46
......First groove, 47...Second groove, 4
8...End face.

Claims (1)

[Claims] 1 A locking means that protrudes into a groove formed on the outer peripheral surface of the steering shaft to prevent rotation of the steering shaft, a cam that contacts the locking means to control the protrusion of the locking means, and a switch that is connected to the rotational position. An eccentric shaft that controls the connection of the device, a holder, and a key are inserted into the holder and can be moved in the rotational and axial directions by operating the key, and are movable relative to the eccentric shaft in the axial direction. An operating body is connected to the eccentric shaft so as to be integrally rotatable in the direction, and swings in relation to the insertion and removal of the key into the operating body, and prevents the locking means from protruding until the key is removed from the operating body. a locking lever that holds the lock in the released state; a contact piece protruding radially from the end of the operating body on the eccentric shaft side; a spring that biases the operating body axially toward the key insertion end; first and second surfaces provided at the end of the body on the eccentric shaft side and abutted by the contact piece of the operating body; and an end surface provided on the holding body and protruding radially inward from the holding body on the eccentric shaft side of the operating body. and first and second grooves formed on the end surface of the operating body on the eccentric shaft side into which the engaging piece can be inserted, and the first surface is formed when the operating body is moved from the LOCK position. The second surface is shaped at a location to be abutted by the contact piece of the operating body while the operating body is in a rotational position ranging from the ACC position to the START position. A stepped portion is provided between the first surface and the second surface, and the first surface is closer to the eccentric shaft than the second surface. The first groove is formed at a location where the engaging piece can be inserted when the operating body is in a rotational position ranging from the LOCK position to the ACC position, and the second groove is formed at a location where the engaging piece can be inserted when the operating body is in a rotational position ranging from the LOCK position to the ACC position. A steering lock device characterized by being formed at a location where an engagement piece can be inserted when the steering lock device is in the position.