JP3108627B2 - Vehicle anti-theft device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle antitheft device having a rotary switch for starting an engine, a steering lock device, and a means for checking a code signal by a spatial transmission wave.

[0002]

2. Description of the Related Art A vehicle is provided with a steering lock device for mechanically preventing rotation of a steering wheel in order to enhance theft protection. This steering lock device is configured to move a lock pin provided detachably to a hole of a steering shaft between a lock position and a free position with a rotating force applied to a rotor of the tumbler lock by a key, In general, the operation unit also serves as an operation unit of a rotary switch device for interrupting power supply to electric components of a vehicle.

[0003] This conventional steering lock device is arranged so as to emphasize the convenience of attaching a lock pin to a steering shaft. In many cases, the key insertion property was sacrificed at night without any lighting.

Therefore, there has been proposed a device in which an operation portion of a rotary switch device and a steering lock device are separated from each other, and locking and unlocking of the steering lock device is performed by a wireless code signal transmitter (Kokiaki Tokuho). 63-
37737).

In a steering lock device mounted on a vehicle equipped with an automatic transmission, when the selector of the automatic transmission is not in the parking range, the rotary switch device is moved from the ACC position to the LOC position.
By preventing the driver from turning to the K position, the driver is prevented from forgetting to apply the parking lock when getting off the vehicle. However, even in the keyless steering lock device as described above, such a measure is taken. You need to take it.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its main object to provide a vehicle anti-theft device having a keyless steering lock device capable of preventing a parking lock from being forgotten. It is in.

[0006]

According to the present invention, there is provided a rotary switch for selectively setting an operable state of an engine .
A rotary switch device 2) and a steering lock means for preventing the steering wheel from rotating (embodiment)
Steering lock device 4), and matching means (controller 34 in the embodiment) for judging whether or not the code signal is transmitted by the spatial transmission wave transmitted from the transmitter. Oh Te in the antitheft apparatus for a vehicle locking and unlocking is the selection of the steering lock unit
Thus, the electric actuator (the first antenna in the embodiment)
The rotary switch is engaged with the rotor (7) of the rotary switch means by the operation of the actuator 16).
Prohibiting means for prohibiting the rotation of the switch means (the switch in the embodiment).
Ride cam 11 and lever 13)
It is detected that the selector is out of the parking position
(NO determination at step 12 in the embodiment)
Set the rotary switch means to the rotation prohibited state (embodiment
If the automatic transmission selector is detected to be in the parking position ( step 13 in the state of operation) (step 13 in the embodiment).
YES determination at step 12), the rotary switch
The means is set in a rotation-permitted state (Step 1 in the embodiment)
4) To provide a vehicle anti-theft device characterized in that:
And

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows a schematic configuration of a vehicle antitheft device according to the present invention. This antitheft device comprises a rotary switch device 2 provided on an instrument panel 1 and a steering lock device 4 provided on a steering column 3.

As shown in FIG. 2, the rotary switch device 2 basically follows the structure of a key switch of a known type, the steering lock device 4 is locked, and power is supplied to on-vehicle electrical components. The intermittent contacts between the LOCK position to be cut off, the ACC position to turn on the radio or the like, the ON position to turn on the fuel system and the ignition system, and the START position to turn on the starter motor are provided. It comprises a built-in switch section 5 and a tumbler lock section 8 in which a rotor 7 can rotate in accordance with the position of a tumbler plate 6 built therein. The switch unit 5 and the tumbler lock unit 8 are connected to each other via a connection shaft 9, and the contacts of the switch unit 5 are intermittently interlocked with the rotation of the rotor 7. The rotor 7 is integrally formed with a knob 10 for gripping with a fingertip and rotating the rotor 7.

A connecting shaft 9 integral with the rotor 7 has a structure shown in FIG.
As shown in the figure, the slide cam 11 having a substantially conical shape slides. The tumbler lock portion 8 has one end corresponding to the slide cam 11 and the other end corresponding to the tumbler plate 6, the intermediate portion is pivotally supported in a seesaw manner, and the other end is separated from the tumbler plate 6. A pair of levers 13 constantly urged by a coil spring 12 in the direction of rotation, and a worm 15 meshing with a rack gear 14 formed on the slide cam 11 to rotate the first worm to give reciprocating axial movement to the slide cam 11. An actuator 16 is provided. Note that the tumbler lock section 8 is configured such that the rotor 7 can also be rotated by inserting a mechanical key 17.

[0011] Between the switch section 5 and the tumbler lock section 8, a cam 18 integrally provided on the connecting shaft 9 is engaged.
A slider 19 is provided which performs a linear motion in a direction orthogonal to the axis of the connecting shaft 9 by a rotational motion given to the connecting shaft 9. The slider 19 can be connected to a lock pin of the steering lock device 4 described later via a wire.

As shown in FIG. 4, the steering lock device 4 has a hole 2 provided in the steering shaft 20.
1 and a second actuator 23 for giving a linear motion to the lock pin 22 in a direction of coming out of the hole 21.

The lock pin 22 is constantly resiliently biased by a coil spring 24 in a direction to enter the hole 21 of the steering shaft 20. And the second actuator 2
The arm 25 is rotated by the arm 3 and pulled out of the hole 21 against the resilience of the coil spring 24. The arm 25 stopped at a specified angle holds the steering lock device in the unlocked position. (See FIG. 5).

The lock pin 22 has a clutch mechanism 26 interposed therebetween. The clutch mechanism 26 is incorporated in a member that constitutes the lock pin 22, and
A fork member 27 that slides and displaces on an axis orthogonal to the second sliding shaft, and a clutch actuator 29 that applies a displacement to the fork member 27 by a screw mechanism 28 between a clutch-on position and a clutch-off position. ing.

The fork member 27 of the clutch mechanism 26
The engagement ball 33 is fixed to the end of the wire 30 connected to the slider 19 and is always resiliently biased by the coil spring 32 in a direction to protrude into the slot 31 formed in the lock pin 22. It is possible to join and leave.

The steering lock device 4 has a first
A controller 34 for controlling the second actuators 16 and 23 and the clutch actuator 29 is additionally provided. A housing 35 slidably receiving the lock pin 22 is fixed to the steering column 3 with the second actuator 23 and the controller 34 incorporated therein.

Next, the operation of the apparatus of the present invention will be described with reference to FIGS.
This will be described with reference to FIG.

In the initial state, the door lock device 36
Is locked, and the rotor 7 of the rotary switch device 2 is L
It is in the OCK position. At this time, the slide cam 11 is in the locked position (R) shown on the right side from the center line in FIG. 2, and the tumbler plate 6 projects from the outer peripheral surface of the rotor 7 and
Is in a non-rotatable state. On the other hand, the lock pin 22 of the steering lock device 4 protrudes into the hole 21 of the steering shaft 20, and the steering wheel 37 is in a non-rotatable state.
7 is located at a position separated from the engagement ball 33 at the tip of the wire (see FIG. 4).

When a unique code signal (for example, by electromagnetic waves) is transmitted from the outside of the vehicle by the transmitter 38 (step 1), the signal is received by the receiver 39 of the vehicle, and the unique password stored in the controller 34 is received. Check with the code (step 2). When the controller 34 confirms that the code signal from the transmitter 38 matches the password (step 3), the controller 34 issues an unlock command for the door lock device 36 (step 4). On the other hand, if the code signal and the password do not match, a mismatch process is performed, and the system enters a code signal reception standby state (step 5).

When the door lock device 36 is unlocked, a door lock unlock detection signal including a contact signal of a limit switch and the like is output to the controller 34. When this signal is received, a command to advance the slide cam 11 is issued to the first actuator 16, and the slide cam 11 advances from the center line in FIG. 2 to the unlocked position (F) shown on the left. As a result, when the lever 13 rotates, the tumbler plate 6 is immersed in the rotor 7, and the rotor 7 becomes rotatable (step 6). This state is confirmed by, for example, detecting the position of the slide cam 11 or counting the number of rotations of the first actuator 16.

On the other hand, the controller 34 drives the second actuator 23 in parallel with the unlocking of the rotary switch device 2, moves the lock pin 22 to the unlock position, and unlocks the steering lock device 4 (step). 7).
When the completion of unlocking of the lock pin 22 is confirmed by, for example, a contact signal of a limit switch or the like, the knob 10 is turned to bring the rotor 7 to the START position, so that the starter motor starts and the engine starts (step 8).

In this series of operations, the slider 19 moves and pulls the wire 30 in accordance with the rotation of the cam 18 formed integrally with the connecting shaft 9 (see FIG. 12). Since they are separated from 30, they do not interfere with each other.

Next, the operation at the time of getting off the vehicle will be described. When the driver turns the knob 10 to stop the engine (step 11), the controller 34 determines whether or not the selector 40 of the automatic transmission is at the P position (step 1).
2) If the rotor 40 is to be rotated from the ACC position to the LOCK position when the selector 40 is at a position other than the P position, the controller 34 drives the first actuator 16 to move the
The slide cam 11 is moved backward to the interlock position (I) shown by the imaginary line in FIG. As shown in FIG. 9, the rear end of the slide cam 11 and the front end of the rotor 7 are engaged with each other to define the rotation range of the rotor 7 at a predetermined angle (for example, 30 degrees). A detent means 41 is formed, and the slide cam 11 retreated causes the LO
Rotation to the CK position is prohibited. At the same time, the controller 34 sounds a buzzer or the like to notify the driver that the selector 40 is not at the P position (step 13).

When the controller 34 recognizes that the selector 40 has been moved to the P position, the buzzer notification is stopped and the slide cam 11 is returned to the unlock position (F).
The rotor 7 is turned to the LOCK position (step 14).

When the driver who gets off after setting the rotor 7 at the LOCK position transmits a code signal from the outside of the vehicle using the transmitter 38 (step 15), the controller 34 checks the signal (step 16). If it is determined that they match (step 17), the controller 34 locks the door lock device 36 (step 1).
8) And the tumbler lock section 8 is locked (step 19). Concurrently, the controller 34 drives the lock pin 22 with the second actuator 23 to lock the steering lock device 4 (Step 20). On the other hand, if it is determined in step 17 that the code signal and the personal identification code do not match, a mismatch process is performed, and a code signal reception standby state is set (step 21).

It is possible that the operation by the above-mentioned radio signal cannot be performed due to a malfunction of the transmitter / receiver or the code collation means. In such a case, the operation by the mechanical key 17 can be performed. is there. When the mechanical key 17 is used, the mechanical key 1
7 is inserted (step 31), a contact signal of a key insertion detection switch 42 provided near the key insertion opening of the housing of the rotary switch device 2 is input to the controller 34 (step 32). With this signal, the clutch actuator 29 is operated, and the engaging ball 3 at the tip of the wire 30 is engaged.
3 is engaged with the fork member 27 (step 33 in FIG. 1).
0). When the rotor 7 is rotated from this state toward the ACC position (step 34), the slider 19 moves by the action of the cam 18 formed on the connecting shaft 9 (see FIG. 12).
As a result, the lock pin 22 is pulled out of the hole 21 of the steering shaft 20 by being pulled by the wire 30 (FIG. 1).
1).

When the rotor 7 is returned to the LOCK position (step 35), the slider 19 returns by the action of the coil spring 43, and the pulling force of the wire 30 is released (see FIG. 13). Since the wire 30 and the lock pin 22 are also resiliently urged in a direction in which the lock pin 22 protrudes into the hole 21 of the steering shaft 20, the hole 2 of the steering shaft 20 is
1 automatically enters the lock pin 22 and the steering lock is locked.

When the mechanical key 17 is pulled out of the tumbler lock unit 8 (step 36), the key insertion detection switch 42
Of the contact signal is turned off is input to the controller 34 (step 37). In response to this signal, the clutch actuator 29 is operated, the fork member 27 is detached from the engagement ball 33 at the tip of the wire 30, and the unlocking of the steering lock device 4 becomes impossible (step 38).

[0029]

As described above, according to the present invention, the rotary switch cannot be turned to the LOCK position unless the selector of the automatic transmission is set to the parking position. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a device of the present invention.

FIG. 2 is a partial longitudinal sectional view of a rotary switch device.

FIG. 3 is a plan view of the rotary switch device, partially cut away.

FIG. 4 is an essential part cross-sectional view showing a locked state of the steering lock device in a clutch off state.

FIG. 5 is an essential part cross-sectional view showing an unlocked state of the steering lock device in a clutch off state.

FIG. 6 is a flowchart of a process performed by the apparatus of the present invention when the user gets on a vehicle.

FIG. 7 is a processing flow chart of the device of the present invention when getting off the vehicle.

FIG. 8 is a processing flowchart when a mechanical key of the apparatus of the present invention is used.

FIG. 9 is a partial cross-sectional view taken along line IX-IX in FIG. 3 for explaining a rotation prohibition state of the rotary switch device.

FIG. 10 is an essential part cross-sectional view showing a locked state of the steering lock device in a clutch-on state.

FIG. 11 is an essential part cross-sectional view showing an unlocked state of the steering lock device in a clutch-on state.

FIG. 12 is an essential part cross-sectional view for explaining the operation of a slider that transmits the rotation of the rotor of the rotary switch device to the lock pin of the steering lock device at the time of unlocking.

FIG. 13 is a sectional view of an essential part for explaining an operation of a slider for transmitting rotation of a rotor of a rotary switch device to a lock pin of a steering lock device during locking.

[Explanation of symbols]

 Reference Signs List 1 instrument panel 2 rotary switch device 3 steering column 4 steering lock device 5 switch unit 6 tumbler plate 7 rotor 8 tumbler lock unit 9 connecting shaft 10 knob 11 slide cam 12 coil spring 13 lever 14 rack gear 15 worm 16 first actuator 17 machine Key 18 cam 19 slider 20 steering shaft 21 hole 22 lock pin 23 second actuator 24 coil spring 25 arm 26 clutch mechanism 27 fork member 28 screw mechanism 29 clutch actuator 30 wire 31 slot 32 coil spring 33 engaging ball 34 controller 35 Housing 36 Door lock device 37 Steering wheel 38 Transmitter 39 Receiver 40 Selector 41 Rotation stop means 4 2 Key insertion detection switch 43 Coil spring

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-183246 (JP, A) JP-A-1-130475 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 25/02 B60R 25/06

Claims (1)

(57) [Claims] 1. A rotary switch means for selectively setting an operable state of an engine, a steering lock means for making a steering wheel unrotatable, and a collation for judging whether a code signal by a spatial transmission wave transmitted from a transmitter is correct or not. Means for locking or unlocking the steering lock means in accordance with the result of the comparison by the means for collation, wherein the rotation of the rotary switch means is controlled by the operation of an electric actuator. To the rotary switch
Comprising a prohibiting means for prohibiting the rotation of the switch means, the selector of the automatic transmission is in other than the parking position
Is detected, the rotation of the rotary switch is prohibited.
When the automatic transmission selector is detected to be in the parking position when the automatic transmission is in the stop state , the rotary switch is turned to the rotation permission state.
An anti-theft device for a vehicle, comprising: