JPS5824609Y2 - Steering lock device safety device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a safety device that improves the anti-theft function of a steering lock device that controls the advance and retreat of a locking member that locks a steering shaft using a cam member that is rotated by a key. It is.

In conventional steering lock devices of this type, the locking member that locks the steering shaft is generally biased toward the steering shaft by a spring when the lock is activated, and maintains the locked state. If the lid is removed, it can be easily unlocked from the outside, so the lid is made of sturdy die-cast parts.

However, since the spring receiving part of the lid is inevitably thinner than other parts for positioning the spring, it is not impossible to make a hole by hitting it with a sharp chisel, and therefore it is not possible to release the locked state. It wasn't impossible.

The present invention was made to eliminate such drawbacks, and is controlled by a key inserted into the key cylinder.
In addition, unless a key is inserted into the key cylinder to rotate the cam member, a locking member is provided that engages the cam member and the locking member with each other, and the cam member is locked only by rotation of the cam member by rotation of the key. It is an object of the present invention to provide a safety device for a steering lock device in which a member can be unlocked.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Reference numeral 1 denotes a key cylinder into which a key 2 is inserted, and is rotated by the key.

A cam member 3 is rotatably connected to the key cylinder 1, and has a semicircular cam surface 3a.

Reference numeral 4 denotes a locking member capable of locking the steering shaft 5, and includes a bolt portion 4a capable of engaging with the steering shaft 5 and a hanger portion 4b capable of abutting the cam surface 3a. At a position other than the cam surface 3a, the key 2 is retracted to the retracted position in which it is not engaged with the steering shaft 5, and the cam surface 3a is in the "lock" position.
When it is not in contact with , it is urged by the spring 6 and moves forward to the protruding position.

7 is an ignition switch, and the cam member 3
and the elongated hole 4c of the locking member 4.
The key 2 is connected to a shaft 8 extending through the shaft 8 and driven by the key 2.

A locking member 9 is built into the cam member 3 and controlled by the key 2, and includes a slide pin 9a that is disposed so as to be able to protrude in the direction of the elongated hole 4C of the lock member 4, and a fixed pin 10. A lever 9b is disposed rotatably around the key 2, and has one end extended so as to be able to abut the tip of the key 2, and the other end connected to the slide pin 9a, with one end of the lever facing the key side. Spring 9c biases the
When the key 2 is in the key cylinder 1, the slide pin 9a is in the retracted position where it is not engaged with the lock member 4, and when the key 2 is pulled out, the slide pin 9a is in the retracted position in which the lock member 4 is not engaged. It moves forward to the protruding position where it engages with the member 4.

Note that 11 is a steering lock housing, and 12 is a lid that holds down the spring 6.

With the configuration g6 as described above, when the key 2 is inserted into the key cylinder 1, the lever 9b comes into contact with the tip of the key 2 and the slide pin 9a is moved as shown in FIG. 1 or 3. is in the retracted position, and the steering lock device can operate normally.

Further, when the key 2 is pulled out at the "lock" position, the lever 9b is urged by the spring 9c and rotates counterclockwise, as shown in FIG. The locking member 4 and the cam member 3 protrude into the elongated hole 4c of the cam member 4, and the locking member 4 and the cam member 3 are locked with each other.

In the above embodiment, an example was explained in which the lock member 4 is in the locked position when the key 2 is in the "lock" position, but when the key is turned to the "lock" position and the key is further pulled out, the lock member protrudes. For the type with slide pin 9a
once comes into contact with the surface of the locking member, but at the same time as it faces the long hole of the locking member, it protrudes to the engagement position, producing the same effect.

As described above, the present invention controls the forward and backward movement of the locking member 4 that locks the steering shaft 5 by the cam member 3 which is interlocked with the key cylinder 1 into which the key 2 is inserted and rotated by the rotational operation of the key. In the steering lock device,
When the key 2 is pulled out from the key cylinder 1 and the locking member 4 locks the steering shaft 5, the cam member 3 and the locking member 4 are locked to each other;
The steering lock device is characterized in that the cam member 3 is provided with a locking member 9 that is driven by the key 2 to release the lock when the key 2 is inserted into the key cylinder 1. According to the present invention, the safety device is such that when the key 2 is pulled out and the locking member 4 locks the steering shaft 5, the locking member 4 is locked by the locking member 9. Even if the lid 12 is destroyed, it is impossible to pull up the lock member 4, and the steering shaft 5 cannot be unlocked.

Further, the slide pin 9a of the locking member 9 that locks the cam member 3 and the locking member 4 with each other is shielded from the lid 12 side by the hanger portion 4b of the locking member 4 and the shaft 8, so that the lid It is impossible to withdraw the slide pin from the 12 side.

Furthermore, the locking member 9 controlled by the key 2 can be adjusted, for example (
If the design is such that it is controlled by the tip of the key 2 (as in the embodiment), the slide pin 9a will not be retracted unless the key is completely inserted, so depending on the key code, it may not be possible to use a correctly matched key. Nevertheless, it has the effect of solving the problem of being able to rotate at first even when it is off by about one pitch, but then being unable to rotate or insert or remove it.

[Brief explanation of drawings]

FIGS. 1 to 4 each show an embodiment of the present invention, and FIG.
The figure is a sectional view, Figure 2 is a sectional view taken along line A-A in Figure 1, Figure 3 is a sectional view of the main part of Figure 1, and Figure 4 is similar to Figure 3 with the key pulled out. FIG. 1...Key cylinder, 2...Key, 3
...Cam member, 3a...Cam surface, 4.
...Track member, 4a...Bolt part, 4b
...Hanger part, 4c...Elongated hole, 5...
... Steering shaft, 6 ... Spring,
1...Ignition switch, 8...
・Shaft, 9...Locking member, 9a...Slide pin, 9b...Lever, 9c...
Spring, 10...Fixing pin, 11...
...Housing, 12...Lid.

Claims (1)

[Scope of utility model registration request] In a steering lock device that controls the advance and retreat of a locking member 4 that locks a steering shaft 5 by a cam member 3 that is interlocked with a key cylinder 1 into which a key 2 is inserted and rotated by a rotational operation of the key, the key 2 is pulled out from the key cylinder 1 and when the lock member 4 or the steering shaft 5 is locked, the cam member 3 and the lock member 4 are locked together, and the key 2 is inserted into the key cylinder 1. A safety device for a steering lock device, characterized in that the cam member 3 is provided with a locking member 9 that is driven by the key 2 to release the lock when inserted.