JPS634182A - Unlocking control apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to an unlocking control device in which a locking mechanism is automatically unlocked by inputting a code.

(Prior Art) This type of device is known from Japanese Patent Laid-Open No. 60-277760, and an example thereof is shown in FIG.

An input code is given to the code input terminal 10 in the figure from an external receiver or keyboard that receives wireless signals such as radio waves, ultrasonic waves, and light, and the input code is received by the input code receiving circuit 12. There is.

In the code matching circuit 14, the input code receiving circuit 12
The input code given from is compared with the unlock code stored in advance in the unlock code storage circuit 16, and when it is confirmed that the codes match, the lock mechanism 20 is unlocked by the unlock actuator 18. Being manipulated.

Here, input code receiving circuit 12, code matching circuit 14
, the unlocking code storage circuit 16, the unlocking actuator 18, and the locking mechanism 20 are housed in a rigid case 22, and once assembled, the rigid case 22 cannot be disassembled.

Therefore, in order to access the unlocking actuator 18 or the locking mechanism 20, it is necessary to destroy the solid case 22, which makes it possible to reliably prevent theft.

(Problem to be Solved by the Invention) However, even when changing the unlock code stored in the unlock code storage circuit 16, the solid case 22 must be destroyed, making the change virtually impossible. Therefore, in the past, there was a problem that this request could not be met.

The present invention has been made in view of the above-mentioned conventional problems,
The aim is to provide a device of this type that can completely prevent the vehicle from being stolen and also allows the unlocking code to be changed as desired.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an unlock code storage circuit that is configured with a rewritable memory and stores an unlock code in the memory, and a code matching circuit that matches the entered code with the unlocking code stored in the memory; an unlocking actuator that unlocks the locking mechanism when the code matching circuit confirms that the two codes match; and an external input. a code rewrite command circuit that instructs an unlock code storage circuit to rewrite the unlock code when an operating force is applied; and a code rewrite command circuit that provides the operating force to the code rewrite command circuit by operating a compatible key piece. A locking mechanism, and a hard case that cannot be disassembled, in which the unlocking code storage circuit, the code verification circuit, the unlocking actuator, the code rewriting command circuit, and the locking mechanism are housed, and the keyhole of the locking mechanism is exposed. An unlocking control device characterized by:

(Function) In the present invention, it is possible to rewrite the unlock code in the memory only when a key piece suitable for the lock mechanism is inserted into the key hole and operated.

(Embodiments) Hereinafter, preferred embodiments of the apparatus according to the present invention will be described based on the drawings.

FIG. 1 shows a first embodiment, in which the input code receiving circuit 12, code verification circuit 14, unlocking code storage circuit 16, unlocking actuator 18, and locking mechanism 20 are disassembled as in FIG. It is housed in a rigid case 22 that is impossible to maintain.

The unlocking code storage circuit 16 of this embodiment uses a memory element in which the unlocking code can be rewritten, and the new unlocking code is stored at the rewriting terminal exposed on the hard case 22 together with the input terminal 10. 24 to the unlock code storage circuit 16.

Furthermore, rewriting to a new unlocking code given from the rewriting terminal 24 is performed in the unlocking code storage circuit 16 while the switch 26 (coat rewriting command circuit) is on. 26 on/off drive is lock mechanism 2
This is done by 8.

The switch 26 and the lock mechanism 28 are also housed in the rigid case 22, and a keyhole 28a of the lock mechanism 28 is exposed to the rigid case 22.

A key piece 30 is inserted into the keyhole 28a, and the key piece 3
0 is compatible with the lock mechanism 28, the switch 26 can be turned on by operating the key piece 30 inserted therein.

Therefore, when rewriting the unlock code, the key piece 30 that is compatible with the lock mechanism 30 is first inserted into the keyhole 28a, and then the switch 26 is turned on by operating the key piece 30.

As a result, when the unlock code storage circuit 16 becomes in a state where the code can be rewritten, a new unlock code is given to the unlock code storage circuit 16 from the rewriting terminal 24, and the unlock code is rewritten.

As described above, according to this embodiment, it is possible to change the unlock code according to a request.

Further, according to this embodiment, the switch 26 and the locking mechanism 28 are connected to the input code receiving circuit 12, the code verification circuit 14, the unlocking code storage circuit 16, the unlocking actuator 18, and the locking mechanism 2.
Since the key piece 30 that fits the lock mechanism 28 is required to change the unlock code, it is possible to reliably prevent theft in the same way as the device shown in FIG. 2. becomes.

FIG. 3 shows another embodiment of the locking mechanism 2.
0, the vehicle steering wheel is locked and unlocked.

Locking and unlocking of the locking mechanism 20 is also possible with a key piece 30 that is an ignition key that fits the locking mechanism 28, and the switch 26 is connected to the key mechanism 28 and the locking mechanism 20.
is driven on through.

Note that the unlock code is changed when the ignition switch (key piece 30) is placed in the accessory position.

Further, the unlock code storage circuit 16 is constituted by a memory element whose input/output is 4 bits as shown in FIG. 4, and thus four rewriting terminals 24 are provided.

FIG. 5 shows a specific configuration of this embodiment, in which a steering shaft 36 is provided in the steering column 34.
is inserted.

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

The tip of a lock pin 42 is inserted into the lock groove 40 from inside the rigid case 22 when the steering is locked, and the lock pin 42 is attached to a hanger 44.

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

The cam 48 is attached to the key operating shaft 50,
An ignition switch in a switch box 52 is operated by a key operation shaft 50.

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

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

It will be done.

Further, an operating cylinder 56 is fitted onto the key cylinder 54, as in the case of Japanese Patent Laid-Open No. 60-176850, and its upper portion protrudes from the rigid case 22.

A plunger shaft from the unlocking actuator 18 in the solid case 22 is inserted into the locking groove formed on the lower side surface of the operating cylinder 56, and the plunger shaft is inserted into the locking groove formed on the lower side surface of the operating cylinder 56.
8 is connected to a board 58 which is also housed in the rigid case 22.

On this board is an input code receiving circuit 12. Code verification circuit 14. electronic components that constitute the unlock code storage circuit 16;
A switch 26 is mounted, and when the input code matches the unlock code, the plunger shaft of the unlock actuator 18 is retracted from the lock groove of the operating cylinder 56.

This makes it possible to rotate the operation cylinder 56.
By this operation, the cam 48 is rotationally driven via the key cylinder 54.

Therefore, the steering lock can be released and the ignition switch can be operated by the above operation of the operation cylinder 56, and the key piece 30 (ignition key) is not required at this time.

Note that the operating cylinder 56 is held back from the key cylinder 54 by a tumbler 60, and the key cylinder 54
The tumbler 60 is activated by the key piece 30 inserted into the operation cylinder 5.
By being evacuated to 6.

The liquid cylinder 54 becomes rotatable relative to the operating cylinder 56.

As explained above, according to this embodiment, it is possible to change the unlocking code according to the request of the vehicle purchaser, so it is possible to enhance the product appeal of the device, that is, the product appeal of the vehicle.

(Effects of the Invention) As explained above, according to the present invention, the unlock code storage circuit, the code verification circuit, the code rewriting command circuit, and the lock mechanism are housed in a rigid case, and the lock mechanism exposed in the rigid case is Since the unlock code can be rewritten by operating the compatible key piece inserted into the keyhole, the unlock code can be changed as desired while ensuring high theft prevention.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a first preferred embodiment of the device according to the present invention, FIG. 2 is an explanatory diagram of the configuration of a conventional device, and FIG. 3 is a second preferred embodiment of the device according to the present invention. Block Diagram,
FIG. 4 is an explanatory diagram of the configuration of the unlock code storage circuit in FIG. 3, and FIG. 5 is a sectional view showing the specific configuration of the embodiment shown in FIG. 3. 14...Code verification circuit 16...Code storage circuit 18...Unlock actuator 20...Lock mechanism 22...Sturdy case 26...Switch 28...Lock mechanism 28a...Keyhole 30...Lock piece Fig. 1 Fig. 5

Claims (1)

[Claims] (1) An unlock code storage circuit that is composed of a rewritable memory and stores an unlock code in the memory, and a code verification circuit that compares a code input from the outside with the unlock code stored in the memory. and an unlocking actuator that unlocks the locking mechanism when a match between the two codes is confirmed by a code matching circuit, and an unlocking actuator that unlocks the locking mechanism when an operating force is applied to rewrite the unlocking code input from the outside. a code rewriting command circuit that commands a code storage circuit; a lock mechanism that applies the operating force to the code rewriting command circuit by operating a compatible key piece; an unlocking code storage circuit, a code verification circuit, an unlocking actuator, and a code. An unlocking control device comprising: a hard case that cannot be disassembled, in which a rewriting command circuit and a locking mechanism are housed, and a keyhole of the locking mechanism is exposed;