JPH0655898U - Steering lock device - Google Patents

Abstract

(57) [Summary] [Purpose] Break the cylinder lock with a drill and pull it out.
It is to obtain effective countermeasures against the theft means for unlocking the steering lock by rotating the inner shaft with a tool. [Structure] A cylinder lock and an ignition switch are coaxially arranged and supported in a lock case, and they are connected by a connecting shaft having a crank portion, and a base end of a lock bar is engaged with the crank portion for connection. By rotating the rod, the shaft portion of the lock bar is configured to be capable of advancing and retracting outward from the lock case, and the cylinder lock is supported so as to be capable of advancing and retracting in the axial direction with respect to the lock case,
An electromagnetic lock mechanism is provided between the cylinder lock and the lock case to disengage at the cylinder lock push-in position, and an electromagnetic lock mechanism is installed between the cylinder lock and the connecting shaft to prevent the cylinder lock from being pushed in. The steering lock is not released unless the mechanism is released.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a steering lock device of a type that is integrally formed with an ignition switch to prevent theft of an automobile or a motorcycle and that is operated by a key to operate the ignition switch.

[0002]

[Prior art]

 Generally, a steering lock device installed for the prevention of theft is attached to a case integrated with a cylinder lock for operating an ignition switch. Therefore, the cylinder lock that operates the ignition switch or the steering lock device is often destroyed by a person who attempts to steal the vehicle. In other words, insert a drill into the key hole of the cylinder lock to destroy the internal tumbler mechanism, or to break the cylinder lock mounting part to pull out the cylinder lock, and to connect the ignition switch and the steering lock device. Theft may be done by directly operating the. Therefore, generally, the cylinder lock itself is made of a hard metal, or a part thereof is made of a cemented carbide to prevent drilling by a drill.

[0003]

[Problems to be solved by the device]

 However, in many cases of this type, the cylinder lock is pulled out with some kind of means, so take measures to prevent it from being pulled out, and even if the cylinder lock is broken, the ignition switch may operate. It is required to prevent the steering lock from unlocking, or both.

[0004]

[Means for Solving the Problems]

 The purpose of this invention is to provide a steering lock device devised to prevent the vehicle from being stolen due to the destruction of the cylinder lock described above. A cylinder lock and an ignition switch are coaxially arranged in a lock case. Support them, connect them with a connecting shaft with a crank part, engage the base end of the lock bar with the crank part, and turn the connecting bar to direct the shaft part of the lock bar outward from the lock case. The cylinder lock is supported so as to be movable back and forth in the axial direction with respect to the lock case, and locking means is provided between the cylinder lock and the lock case, the locking means being disengaged at the pushing position of the cylinder lock, and The feature is that an electromagnetic lock mechanism is installed between the cylinder lock and the connecting shaft to prevent the cylinder lock from being pushed.

[0005]

[Action]

 When the cylinder lock is operated by the regular key, the electromagnetic lock mechanism is first released with the operation or separately. When the cylinder lock is pushed in that state, the lock case and the cylinder lock are disengaged from each other, and thereafter, the rotation operation of the key is transmitted to the lock bar and the ignition switch. Even if the cylinder lock is broken by the drill from the keyhole side, the connecting shaft cannot be rotated unless the electromagnetic lock mechanism is released. Therefore, the connecting shaft cannot be operated except for releasing or breaking the electromagnetic lock mechanism.

[0006]

【Example】

 The present invention will be described below with reference to the illustrated embodiments. In the figure, L is a steering lock device, and 10 is its lock case. The lock case 10 is formed by connecting a front case 11 and a rear case 12 inseparably with bolts 13. An inner case 14 is provided in the front case 11, and a cylinder lock 15 is rotated in the inner case 14. Further, the rear case 12 is slidably supported, and the rear case 12 is provided with an ignition switch 30 and a lock bar 40.

As is well known, the cylinder lock 15 is provided with a tumbler mechanism 16, which allows the cylinder lock 15 to rotate or rotate and slide in the axial direction unless a proper key is inserted into the key hole 17. It is locked so that it cannot be done. Further, according to the present invention, two protrusions 25 are vertically symmetrically provided on the outer periphery of the rear end portion of the cylinder lock 15 as a locking means, and can be engaged with and disengaged from the engaging concave portion 26 provided in the inner case 14. Is engaged with. That is, when the cylinder lock 15 is not used, the cylinder lock 15 is pressed by the spring 24 via the connector 21 so that the projection 25 and the engagement recess 26 are engaged with each other, and the cylinder lock 15 is pushed in using a key. Only when it is caught, the engagement is released. Reference numeral 18 denotes a breakage preventing piece, which is made of a super hard metal and prevents the tumbler mechanism 16 from being broken due to the key hole 17 being bored by a drill or other tool.

The cylinder lock 15 is connected to the ignition switch 30 and the lock bar 40 by a connecting shaft 27. That is, the cylinder lock 15 is formed in a shape that allows a slight axial movement by the odd-shaped hole 22 formed at the rear end and the same-sized but rather small-sized engaging projection 23 formed in the connector 21. As shown in FIG. 2, the connector 21 is also separable by a deformable hole 35 which can be engaged and disengaged in the same manner, and a similar small-sized projection 36 formed on the connecting shaft 27, and They are connected to each other so that they cannot rotate. Therefore, when the cylinder lock 15 is pushed in by the driver, the engagement between the two protrusions 25 and the engagement recess 26 is disengaged, and if the cylinder lock 15 is turned in that state, the rotation is mediated by the connecting shaft 27. The rotation of the cylinder lock 15 is transmitted to the lock bar 40 and the ignition switch 30.

The ignition switch 30 is hermetically attached to the rear end opening of the rear case 12, and an electric contact is formed between the fixed contact plate 31 and the movable contact plate 32. By the rotation, the electric wiring (not shown) connected to the fixed contact plate 31 and the movable contact plate 32 is connected or cut off. The connecting shaft 27 is connected to the movable contact plate 32. Therefore, the turning operation of the cylinder lock 15 causes the intermittent operation of the ignition switch 30.

The lock bar 40 protrudes and retracts in the radial direction from the rear case 12, and engages with the locking piece 42 of the steering shaft shown by the phantom line at its protruding position to prevent its rotation. An elongated hole 29 through which the crank portion 28 of the connecting shaft 27 is inserted is provided at an inner end portion of the lock bar 40, and an outer end of the lock bar 40 is locked with rotation of the connecting shaft 27. It is adapted to project outward from 10 or return to the retracted position.

The steering lock device L according to the present invention is characterized in that an electromagnetic lock mechanism 45 is attached to the connector 21 connected to the cylinder lock 15. The electromagnetic lock mechanism 45 includes an electromagnetic coil 46 and an armature 47 biased by the electromagnetic coil 46. The armature 47 is always repulsed in the protruding direction by a spring (not shown), and is retracted by the electromagnetic coil 46 against the elastic force thereof. At the protruding position, the armature 47 protrudes toward the axis of the connector 21, protrudes into and engages with the groove 29a formed on the outer surface of the connector 21, and the connector 21 is pushed in the axial direction. , Both are prevented from being rotated.

Next, a case where the tumbler mechanism 16 forming the cylinder lock 15 of the steering lock device L is broken by a tool such as a drill will be described. In addition to the tumbler mechanism 16, the cylinder lock 15 is prevented from rotating by a pair of projections 25 and an engaging recess 26. Therefore, the cylinder lock 15 does not rotate only by breaking the tumbler mechanism 16. Even if the cylinder lock 15 is successfully removed, the connector 21 exposed there is further blocked in the axial direction and the rotation by the armature 47 of the electromagnetic lock mechanism 45, so that the ignition switch. It is not possible to operate 30 and lock bar 40.

[0013]

[Effect of device]

 As described above, even if the cylinder lock 15 is broken in the locked state of the steering lock device L or the connecting shaft 21 that is pulled out and connected to the cylinder lock is exposed, the connecting shaft 21 is not broken. Since the electromagnetic lock mechanism 45 prevents the turning and pushing operation, the ignition switch 30 and the lock bar 40 cannot be operated, and the steering lock device L cannot be released or the ignition switch 30 cannot be turned on. , The engine cannot be started and the steering wheel cannot be operated. Therefore, the theft of the vehicle can be avoided. Also, during normal operation using the operation keys, the cylinder lock 15 and the inner case 14 are disengaged by the operation of pushing the cylinder lock in the axial direction, so the ignition switch is turned on and the lock bar is engaged. It can be released without any trouble. Moreover, the structure is simple and there is no difficulty in implementing it.

[Brief description of drawings]

FIG. 1 is a sectional view of a steering lock device according to an embodiment of the present invention.

FIG. 2 is an external view showing a main part thereof taken out.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view of a conventional steering lock device corresponding to FIG.

[Explanation of symbols]

 14 ... Inner case 15 ... Cylinder lock 16 ... Tumbler mechanism 21 ... Connector 27 ... Connection shaft 29a ... Groove formed on outer surface 30-Ignition switch 40-Lock bar 45-Electromagnetic lock mechanism

Claims (1)

[Scope of utility model registration request] 1. A cylinder lock and an ignition switch are coaxially arranged and supported by a lock case, and a lock shaft and a lock shaft are connected to each other by a connecting shaft having a crank portion, and a base end of a lock bar is engaged with the crank portion. , The rotation of the connecting rod allows the shaft of the lock bar to move forward and backward from the lock case, and the cylinder lock is supported so as to move forward and backward with respect to the lock case. A steering lock device comprising: a locking device that is disengaged at a cylinder lock pushing position with a case; and an electromagnetic lock mechanism that prevents the cylinder lock from being pushed between the cylinder lock and a connecting shaft.