JPH0639857B2 - Vehicle unlock control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle unlocking control device capable of unlocking a locked portion of a vehicle without using a key.

<Background of the Invention> With respect to this type of device, a proposal shown in Japanese Patent Laid-Open No. 59-24075 has been made. In this proposed device, the vehicle door is unlocked by a portable wireless device carried by the vehicle user. Has been done.

That is, when a radio wave including a vehicle-specific code is transmitted from the portable wireless device, the radio wave is received on the vehicle side.

Then, the code included in the received signal is input to the code matching confirmation circuit, and in this circuit, matching between the internally registered registration code and the input code is confirmed.

Further, when it is confirmed that the two codes match, the unlocking actuator is driven by the output signal and the locking mechanism of the door is unlocked.

According to the above proposed device, the door is unlocked automatically, so that the user can get on the vehicle quickly.

However, in the proposed device, the code matching confirmation circuit was made removable or disassembled, so that it could be replaced or changed to a device suitable for the portable wireless device.

<Object of the Invention> The present invention has been made in view of the above problems, and an object thereof is to provide an unlocking control device for a vehicle capable of reliably preventing removal or modification of a code matching confirmation circuit for checking code matching. To do.

<< Structure of the Invention >> In order to achieve the above object, the present invention has a code matching check circuit for checking the matching between a vehicle-specific code registered in advance on the vehicle body side and an input code input from the outside. In the vehicle unlocking control device that unlocks the locking mechanism of the vehicle when the match between the unique code and the input code is confirmed, the above code matching confirmation circuit joins a pair of case bodies to each other on the opposite sides of the steering shaft. The one side case body having a notch groove for insertion is embedded so as not to reach the outer peripheral surface of the one side case body from the surface facing the steering shaft, and the pair of case bodies is connected to the one side case body from the other side. A bolt that is screwed into the side case body, and after the screw is screwed in, the neck part is assembled by a bolt that is twisted off to form a solid case with a burglar-proof structure. Ring of the locking and unlocking mechanism, characterized in that there is a steering lock is housed.

<< Description of Embodiments >> Preferred embodiments of an apparatus according to the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the portable wireless device 10 is formed in a card shape, and the driver's side door mirror 14 of the vehicle 12 is provided.
Has a loop antenna 16 shown in FIG.

Further, in FIG. 2, a switch 18 is provided on the door lever portion on the driver side, and the switch 18 and the loop antenna 16 are included in the locking / unlocking controller 20 as shown in FIG.

When a vehicle user carrying the portable wireless device 10 gets on the vehicle, the switch 18 is operated, whereby a transmission request signal is given to the loop antenna 16 from the transmission request signal generation circuit 22.

The transmission request signal 22 is received by the loop antenna 24 provided in the portable wireless device 10 and detected by the transmission request signal detection circuit 26.

When the detection is performed, the vehicle-specific code stored in advance in the code storage circuit 28 is applied from the code signal generation circuit 30 to the modulation circuit 32, and the modulation circuit 32 uses the carrier signal of the carrier transmission circuit 34. The modulated code is supplied from the output circuit 36 to the loop antenna 24.

In this way, when the vehicle user carrying the portable wireless device 10 operates the switch 18 on the driver side door, the vehicle 1
The transmission request signal 22 is transmitted from the second side to the mobile wireless device 10, and in response thereto, the mobile wireless device 10 transmits a radio wave including a vehicle-specific code to the vehicle 12.

The transmission signal of the portable wireless device 10 is received by the loop antenna 16 of the locking / unlocking controller 20, and the reception signal is supplied to the reception demodulation circuit 38 activated by the operation of the switch 18.

The reception / demodulation circuit 38 extracts the vehicle-specific code of the portable wireless device 10 contained in the reception signal of the loop antenna 16, and the code is input to the code matching circuit 42 of the code matching confirmation circuit 40.

The code matching confirmation circuit 40 is provided with a code storage circuit 44 in which a vehicle-specific code is registered in advance, and the code matching circuit 42 matches the registered code with the input code. In this embodiment, the code storage circuit 44
Is composed of a ROM.

When the code collation circuit 42 confirms that the code input from the portable wireless device 10 side and the registered code on the code coincidence confirmation circuit 40 side are confirmed, a drive control signal is sent from the code collation circuit 42 to the actuator drive circuit 46. The unlocking actuators 48, 50-1, 50-2, 50-3, 50-4 are driven by the given actuator driving circuit 46.

These unlocking actuators 48, 50-1, 50-2,
Reference numerals 50-3 and 50-4 are provided on the steering and doors, respectively, and the steering actuator is unlocked by the unlocking actuator 48.
The door locks are unlocked by 50-3 and 50-4.

In this way, when the code of the portable radio device 10 is input to the code matching confirmation circuit 40, the registration code of the code storage circuit 44 and its input code are collated, and when both codes match, the vehicle steering and each door are turned on. It is unlocked.

Here, in the present embodiment, the code matching confirmation circuit 40 is housed in the anti-theft case of the steering wheel. In FIG. 1, the steering anti-theft case of this embodiment is divided into an upper case body 52 and a lower case body 54, and a key 56 is inserted into the front end face of the upper case body 52. An insertion port 58 is formed.

The case bodies 52 and 54 are assembled to the steering wheel using bolts 60 and 62.

That is, in FIG. 4, bolt holes 64 and 66 are formed on both sides of the lower surface of the case body 52, and
The bolt insertion holes 68 and 70 are formed at the positions corresponding to them, respectively.

The foot portions of the bolts 60 and 62 are inserted through the insertion holes 68 and 70 from the lower surface side of the case body 54, and then screwed into the bolt holes 64 and 66 of the case body 52, respectively.

Further, notches 60a, are formed in the necks of the bolts 60, 62.
62a are formed respectively, and when the feet are screwed into the screw holes 64 and 66 with a predetermined torque or more, their heads are respectively twisted off from the neck.

As a result, once the case bodies 52 and 54 are assembled to the steering wheel, the anti-theft case becomes a rigid case that cannot be disassembled.

Further, on the facing surfaces of the case bodies 52 and 54, a groove 7 having a half-moon shape in cross section whose axial direction is the direction transverse to the longitudinal direction thereof.
2, 74 are formed respectively, and a steering shaft 76 is inserted through them.

A lock hole 78 is formed in the steering shaft 76, and a lock pin 80 is inserted into the lock hole 78 from the inner peripheral surface of the groove 72 on the case body 52 side.

The lock pin 80 is driven back and forth with respect to the lock hole 78 by the turning operation of the key 56 inserted into the key insertion opening 58 or by the unlocking actuator 48 built in the case body 52, thereby steering. Has been locked or unlocked.

As described above, the steering is locked and unlocked in the anti-theft case, and the locking mechanism is not exposed to the outside. Therefore, the unlocking can be performed only by the portable wireless device 10 or the key 56.

Here, the code matching confirmation circuit 40 of FIG. 3 is embedded in the inner peripheral surface of the groove 74 facing the shaft 76 of the steering wheel.

The surface thereof is flush with the groove 74, and is connected to the outside by a signal line drawn from the case body 54 as shown in FIG.

As described above, according to the present embodiment, the code matching confirmation circuit 4 is provided in the case of the anti-theft structure which is solid and cannot be disassembled.
Since 0 is stored, the code matching confirmation circuit 40 cannot be changed or converted, so that the vehicle is reliably prevented from being stolen.

Further, in the present embodiment, the code matching confirmation circuit 40 is housed in the anti-theft case facing the shaft 76 of the steering wheel, so that the vehicle can be more reliably prevented from being stolen.

Although the code input for unlocking is input from the portable wireless device 10 in the present embodiment, the device may be configured to input the code using a keyboard or the like.

It is also preferable to configure the device so that the code matching confirmation circuit 40 is housed in a rigid case having a theft structure together with a door locking mechanism.

<Effects of the Invention> As described above, according to the present invention, since the code matching confirmation circuit is housed together with the locking mechanism in the solid case having the anti-theft structure, the code matching confirmation circuit is changed or replaced. This makes it impossible to prevent the vehicle from being stolen.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a preferred embodiment of the device according to the present invention, FIG. 2 is an explanatory view of the mounting positions of a loop antenna and a switch in a locking / unlocking controller, and FIG. 3 is a portable radio and locking / unlocking controller. FIG. 4 is a block diagram for explaining the circuit configuration of FIG. 4, and FIG. 4 is an explanatory diagram for assembling the steering antitheft case. 10 ... Portable radio device 16 ... Loop antenna 20 ... Lock / unlock controller 38 ... Reception / demodulation circuit 40 ... Code matching confirmation circuit 42 ... Code matching circuit 44 ... Code storage circuit 46 ... Actuator drive circuit 48 , 50-1, 50-2, 50-3, 50-4 ... unlocking actuator 52, 54 ... case body 56 ... key 60, 62 ... bolt 72, 74 ... groove 76 ... steering shaft 78 …… Lock hole 80 …… Lock pin

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takahisa Tomoda 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) Reference JP-A-54-31883 (JP, A) JP-A-57-15782 (JP, A)

Claims (1)

[Claims] 1. A code matching confirmation circuit for confirming a match between a vehicle-specific code registered in advance on the vehicle body side and an input code input from the outside, and if a match between the vehicle-specific code and the input code is confirmed. In a vehicle unlocking control device for unlocking a vehicle locking mechanism, the above-mentioned code matching confirmation circuit includes a pair of case bodies joined to each other and one side case formed with a notch groove for inserting a steering shaft on each of the opposite surfaces. The pair of case bodies are bolts that are screwed into the other case body from the one side case body so as not to reach the outer peripheral surface of the one side case body from the surface of the body facing the steering shaft. After entering, the neck is assembled with a twisted bolt to form a hard case with anti-theft structure. Furthermore, a steering locking / unlocking mechanism is stored in this solid case, An unlocking control device for a vehicle, which is characterized by being a lock.