JPH0713421B2 - Locking mechanism for vehicle steering - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle steering lock mechanism including a key unlocking operation means and a code unlocking operation means.

<< Prior Art >> Japanese Patent Application No. 60-177294 has been proposed for this type of apparatus, and an example thereof is shown in FIG.

An unlocking code is set in advance in the code setting circuit 10 in the figure, and the code collating circuit 12 collates the input code given from the outside through the terminal 14 with the setting code.

When the matching circuit 12 confirms that the two codes match, the actuator 16 unlocks the locking mechanism 18.

Further, a relay 20 is inserted between the code matching circuit 12 and the terminal 14, and the relay 20 is turned on / off by operating the cancel switch 22.

The OFF driving of the relay 20 blocks the code input from the terminal 14 to the code matching circuit 12, and the blocking state is released by the ON driving of the cancel switch 22.

In this way, the operation of the cancel switch 22 prevents the code input from the outside, and thus the unlocking of the locking mechanism 18 is prohibited.
The provision of 22 makes it possible to improve the anti-theft property.

<< Problems to be Solved by the Invention >> However, in this type of device, when the cancel switch 22 is once discovered, the locking mechanism 18 can be unlocked only by inputting a code. Therefore, when this type of device is applied to the locking mechanism of the steering wheel, unlocking can be performed only by inputting a code, and the vehicle itself can be easily stolen. Therefore, it has been desired to further improve the anti-theft property.

The present invention has been made in view of the above conventional problems,
The purpose is to further improve the anti-theft property of the vehicle.

<< Means for Solving Problems >> In order to solve the above-mentioned problems, the scope of claim 1 of the present invention
The vehicle steering lock mechanism described is a code setting circuit in which an unlock code is preset, and a code collating circuit that collates an externally input code with an unlock code preset in the code setting circuit, An unlocking operation means for unlocking the locking mechanism when a match between both codes is confirmed by the code matching circuit, and an unlocking operation means by a key for unlocking the locking mechanism according to the operation of the key, A cancel switch for selecting whether to prohibit the operation of the unlocking operation means by the code and release the allowance, and a switch for prohibiting the transition of the cancel switch from the prohibition of the operation of the unlocking operation means by the code to the allowance In the steering lock mechanism, the switch is configured to operate in response to the operation of the key.

Further, in the vehicle locking mechanism according to the second aspect of the present invention, the unlocking operation means by the code, the unlocking operation means by the key, and the switch are provided in a steering column. It is configured to be stored in.

<Operation> In the vehicle locking mechanism according to the first aspect of the present invention, the switch that allows the unlocking of the unlocking operation prohibition of the locking mechanism by the code operates according to the operation of the key.

Further, in the locking mechanism for the steering of the vehicle according to the second aspect of the present invention, the unlocking operation means by the code,
The key unlocking operation means and the switch are housed in a non-disassembleable case provided in the steering column, and it becomes difficult to disassemble the locking mechanism to enable unlocking by the cord.

<< Embodiment >> A preferred embodiment of an apparatus according to the present invention will be described below with reference to the drawings.

An embodiment is shown in FIG. 1, and the description of the same members as those in FIG. 3 will be omitted by giving the same reference numerals.

In the present embodiment, the steering of the vehicle is locked and unlocked by the locking mechanism 18, and the locking mechanism 18 can be locked and unlocked by the code input from the outside or the key 30 which is the ignition key of the vehicle.

Each member except the cancel switch 22 is housed in the anti-theft case 32, and the anti-theft case 32 cannot be disassembled once assembled to the steering column.

The cancel switch 22 for prohibiting and releasing the unlocking operation of the unlocking mechanism of the locking mechanism by the code has a movable contact 22a and fixed contacts 22b and 22c, and the fixed contacts 22b and 22c reset the flip-flop 24. The input R and the set input S are respectively connected.

The Q output of the flip-flop 24 is supplied to the relay 20, and when the movable contact 22a of the cancel switch 22 is operated to the fixed contact 22b side, the code input from the outside is blocked by the OFF drive of the relay 20, and When the movable contact 22a is operated toward the fixed contact 22c, the code input blocking state is released by the ON driving of the relay 20.

Here, a switch which operates between the set input S of the flip-flop 24 and the fixed contact 22c of the cancel switch 22 in response to the operation of the key 30 and permits the unlocking prohibition of the unlocking operation of the locking mechanism by the code. 26 is inserted and is driven on by the lock mechanism 28.

Further, the key 30 is inserted into the key hole 28a of the lock mechanism 28, and only when the key 30 fits the lock mechanism 28, the switch 26 can be turned on by the operation of the key 30.

Therefore, the key 30 suitable for the locking mechanism 28 is
Only when the key 30 is inserted into a and the switch 26 is turned on by driving the key 30, the locking mechanism 18 can be unlocked again by the code input from the outside.

FIG. 2 shows a specific configuration of this embodiment, and a steering shaft 36 is inserted in the steering column 34.

A collar 38 is externally fitted and fixed to the steering shaft 36, and a lock groove 40 is formed on a side peripheral surface of the collar 38.

The tip of the lock pin 42 is inserted into the lock groove 40 from the anti-theft case 32 when the steering wheel is locked, and the lock pin 42 is attached to the hanger 44.

The hanger 44 is biased by a spring 46, and is driven by a cam 48 on the half moon in a direction in which the lock pin 42 moves forward and backward with respect to the collar 38.

Further, the cam 48 is attached to the key operating shaft 50, and the key operating shaft 50 operates the ignition switch in the switch box 52.

The key operating shaft 50 is connected to a key cylinder 54 of the lock mechanism 28, and is rotated when the compatible key 30 is inserted into the key cylinder 54 and is rotated.

As a result, the lock pin 42 retracts from the collar 38, the steering lock is released, and the ignition switch in the switch box 52 is operated.

An operating cylinder 56 is externally fitted to the key cylinder 54 as in the case of JP-A-60-176850, and the upper portion thereof is projected from the anti-theft case 32.

The plunger shaft is inserted from the actuator 16 in the anti-theft case 32 into the lock groove formed on the lower side surface of the operation cylinder 56, and the actuator 16 is connected to the substrate 58 also housed in the anti-theft case 32.

On this board 58, the electronic components constituting the code storage circuit 10 and the code matching circuit 12, the relay 20, the flip-flops are provided.
When the input code matches the lock code, the plunger shaft of the actuator 16 is retracted from the lock groove of the operation cylinder 56.

As a result, the operation cylinder 56 can be rotated, and the cam 48 is rotationally driven via the key cylinder 54 by the operation.

Therefore, the steering lock can be released and the ignition switch can be operated by the above-mentioned operation of the operation cylinder 56, and in that case, the key 30 (ignition key) becomes unnecessary.

The operation cylinder 56 is a key cylinder by the tumbler 60.
The key cylinder 54 is prevented from coming off with respect to the key cylinder 54, and the key cylinder 54 is rotatable with respect to the operation cylinder 56 by retracting the tumbler 60 into the operation cylinder 56 by the key 30 inserted in the key cylinder 54.

As described above, according to this embodiment, the cancellation of the steering unlocking by the code input from the outside is the cancel switch.
Once the prohibition is set by the operation of 22, the prohibition cannot be released unless the vehicle has the ignition key (key 30). Further, since each member except the cancel switch 22 is housed in the anti-theft case 32 which cannot be disassembled, it becomes difficult to disassemble the locking mechanism and unlock the code by inputting the code.

Therefore, it is possible to reliably prevent the vehicle from being stolen.

<Effects of the Invention> As described above, according to the invention of claim 1, once the unlocking of the steering wheel by the code input from the outside is prohibited by the operation of the cancel switch, the vehicle is locked. You cannot remove this prohibition unless you own the key.

Further, according to the second aspect of the invention, since each member except the cancel switch is housed in the case provided in the steering column, unlocking of the steering by the code input from the outside cancels the cancel switch. Once prohibited by this operation, it becomes difficult to cancel this prohibited state.

Therefore, it is possible to reliably prevent the illegal unlocking by the code input by the third party, and it is possible to remarkably improve the anti-theft property of the vehicle.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of an embodiment of the present invention, FIG. 2 is a sectional view showing a specific configuration of an embodiment of the present invention, and FIG. 3 is a configuration explanatory view showing a conventional device. . 10 …… Code setting circuit 12 …… Code matching circuit 16 …… Actuator 18 …… Locking mechanism 20 …… Relay 22 …… Cancel switch 24 …… Flip-flop 26 …… Switch 28 …… Locking mechanism 30 …… Key

Claims (2)

[Claims] 1. A code setting circuit in which an unlock code is set in advance, a code collating circuit in which a code inputted from the outside is collated with an unlock code preset in the code setting circuit, and both codes are matched. Unlocking operation means for unlocking the locking mechanism when confirmed by the code matching circuit, unlocking operation means by the key for unlocking the locking mechanism in response to the operation of the key, and unlocking operation by the code A steering lock mechanism for a vehicle, comprising: a cancel switch for selecting the prohibition of the operation of the means and the release of the allowance; The lock mechanism for a steering of a vehicle, wherein the switch is operated in response to an operation of the key. 2. The unlocking operation means by the code, the unlocking operation means by the key, and the switch are housed in a case provided in a steering column. Locking mechanism for the steering of the vehicle described.