JPH10102856A - Burglar prevention device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid inconvenience so that it is transferred to an S/L state because a driver does not intend by restraining and operating an S/L mechanism by locking operation of a set number of times or more of a locking operation means in a prescribed time. SOLUTION: A locking mechanism for locking and releasing a door, a trunk lid or the like of a vehicle and a locking operation means of a key plate or the like for operating and actuating it are provided. An super lock (S/L) mechanism operated by prescribed operation of the locking operation means, for restraining the locking mechanism in a locking state, and making releasing operation impossible is equipped. When the S/L mechanism is actuated by locking operation of a set number of times or more of the locking operation means in a prescribed time, restraining and operating are performed. Thereby inconvenience in which it is transferred from the normal locking state (1- mallock, N/L) to the S/L state can be avoided since a driver does not intend.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-theft device for a vehicle, and more particularly to locking a door or the like of a vehicle to a closed position by locking a key plate to a key cylinder or a remote control operating member to a keyless entry unit. The locking mechanism is locked in the locked state, and unlocking is not possible by unlocking operation by unlocking means other than unlocking operation by the key plate or remote control operation member, for example, unlocking operation by inner lock knob etc. The present invention relates to a vehicle anti-theft device having a locking restraint mechanism.

[0002]

2. Description of the Related Art A door or trunk lid of a vehicle is provided with a locking mechanism provided with a key cylinder. When the key plate inserted into the key cylinder is operated to a locking position, the locking mechanism closes the door or the like. The locking mechanism is unlocked by locking the lock position and operating, for example, the inner lock knob from inside the vehicle.

Therefore, even if the door or the like is locked, the thief breaks the door glass or inserts a metal rod or the like from the gap between the door glass and the door to illegally operate the inner lock knob. In order to prevent this, the lock mechanism is restricted to the locked state by a predetermined operation of the key plate inserted into the key cylinder, and the inner There have been proposed various anti-theft devices for vehicles provided with a locking and restraining mechanism in which an unlocking operation by a lock knob or the like is disabled.

[0004] For example, in the door lock device disclosed in Japanese Utility Model Laid-Open Publication No. 3-23573, a key plate inserted into a key cylinder is repeatedly operated from a neutral position to a locked position twice to activate the lock restraining mechanism. It has become so.

[0005] In the present specification, the above locked and locked state is hereinafter referred to as "super lock" and is abbreviated as "S / L". The normal locked state is called “normal lock”, and is abbreviated as “N / L” to be distinguished from “S / L”. Further, the unlocked state is called “unlocked” and is abbreviated as “U / L”.

[0006]

However, in a vehicle equipped with the S / L mechanism as described above, N / N
If the driver who inserts the key plate into the key cylinder without intending to bring the door in the L state into the S / L state and turns the key plate to the locking position by mistake, the S / L alone is used. There is a disadvantage that the mechanism operates and shifts to the S / L state.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a vehicle anti-theft device which minimizes the inconvenience of shifting from the N / L state to the S / L state without the driver's intention. I do.

[0008]

According to the first aspect of the present invention, there is provided a locking mechanism for locking and unlocking an opening / closing body such as a door or a trunk lid of a vehicle at a closed position, and operating the locking mechanism. Operating means for locking (eg key plate)
Is activated by a predetermined operation of the locking operation means to restrict the locking mechanism to a locked state, and performs an unlocking operation other than the unlocking operation of the locking mechanism by the locking operation means (for example, an unlocking operation by an inner lock knob). An anti-theft device for a vehicle comprising an S / L mechanism for disabling the vehicle, wherein the S / L mechanism is restrained by a locking operation more than a set number of times within a predetermined time of the locking operation means. Things.

According to a second aspect of the present invention, in the first aspect of the present invention, the repetitive locking operation of the locking operation means for restraining the S / L mechanism is limited to only the set number of times.

According to a third aspect of the present invention, in the first or second aspect of the invention, a pulse signal having a predetermined pulse width is generated every time the locking operation is performed by the locking operation means. Means are provided.

According to a fourth aspect of the present invention, in the third aspect of the present invention, a timer for counting the predetermined time is provided, and the timer is configured to control a rising edge of a pulse signal generated by the locking operation of the locking operation means. The timing is started in response to the edge.

According to a fifth aspect of the present invention, in the third aspect of the present invention, a timer for measuring the predetermined time is provided, and the timer generates a pulse signal generated by the locking operation of the locking operation means. The timing is started in response to the falling edge of.

Further, according to the present invention, there is provided a locking mechanism for locking and unlocking an opening / closing body such as a vehicle door or a trunk lid in a closed position, and a locking operation means for operating the locking mechanism. And an S / L mechanism that is operated by a predetermined operation of the locking operation means to restrict the locking mechanism to a locked state and disable unlocking operations other than the unlocking operation of the locking mechanism by the locking operation means. A signal output for outputting a command signal for restraining the S / L mechanism when the locking operation is performed again within a predetermined time after the locking operation by the locking operation means is performed in the vehicle anti-theft device provided with the locking operation means. Means are provided.

[0014]

According to the first aspect of the present invention, S /
In order to switch to the L state, the locking operation means such as a key plate must not be locked a predetermined number of times within a predetermined period of time.
Since the driver does not enter the L state, N
The inconvenience of shifting from the / L state to the S / L state can be avoided.

According to the second aspect of the present invention, the S / L
The S / L state is established by operating the locking operation means a predetermined number of times within a predetermined time, so that when the S / L state is erroneously made, another operation of the locking operation means is performed. The S / L state can be released by a locking operation.

According to the fourth aspect of the present invention, the timer starts timing in response to the rising edge of the pulse signal generated by the locking operation by the locking operation means.
The timer period can be reliably set, and erroneous operations can be eliminated.

According to the fifth aspect of the present invention, the timer starts timing in response to the falling edge of the pulse signal generated by the locking operation by the locking operation means.
The timer time can be set irrespective of the width of the pulse signal generated by operating the key plate.

According to the sixth aspect of the present invention, when the locking operation by the locking operation means is performed again within a predetermined time since the last time the locking operation was performed, the command signal for restraining the S / L mechanism is issued. Since it is output, regardless of the number of times the locking operation means is operated, the S / L can be easily achieved simply by providing a timer.
State.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram conceptually showing a configuration of an embodiment of a vehicle antitheft device according to the present invention, and FIG.
Is a schematic diagram around the key cylinder switch provided on the key cylinder attached to the door on the driver's seat side,
FIG. 3 is a schematic diagram of a door lock device attached to a door on the driver's seat side.

[0021] key cylinder 1 of a door of the driver's seat side shown in FIG. 1 is provided with a key cylinder switch SW ₁ having the configuration as shown in FIG. 2, the key plate key cylinder 1 is to be inserted thereto ( locking operation means, the arm by illustration is omitted), the movable contact 4a of the key cylinder switch SW ₁ is adapted to rotate to the locked position B or unlocked position C from the neutral position a, which is attached to the key cylinder 1 1a (FIG. 3) is rod 2
The lock link 3 is rotated to the lock position as the key cylinder 1 is rotated to the lock position (B position) by being connected to the lock link 3 shown in FIG. The key cylinder 1 is turned to the unlock position as the key cylinder 1 is turned to the unlock position (C position).

As shown in FIG. 2, the key cylinder switch SW ₁ is pivotally supported by a substrate 5 so as to be able to rotate integrally with the key cylinder 1, and is fixed to the pivot 5a. Movable contact piece 4a, fixed contact pieces 4b and 4c in the form of arcs fixed on the substrate 5, and a ground contact piece 4d. One end of the movable contact piece 4a is always at the ground contact point 4d. Is in sliding contact. One fixed contact 4b contacts the other end of the movable contact 4a when the key cylinder 1 is turned to the lock position B, and the other fixed contact 4c turns the key cylinder 1 to the unlock position C. When it is moved, it comes into contact with the other end of the movable contact piece 4a.

The fixed contact 4c is connected directly to the fixed contact 4b via a resistor R to the terminal 20 of the circuit board 30 shown in FIG. 4, and the movable contact 4a is moved to the neutral position shown in FIG. In some cases, nothing is connected to the terminal 20, so that the predetermined voltage value is maintained. However, when the movable contact piece 4a comes into contact with the fixed contact piece 4b on the lock side, the movable contact piece 4a is grounded via the resistor R. Is generated, and when the movable contact piece 4a comes into contact with the unlocked fixed contact piece 4c, it is grounded to generate a second voltage value corresponding to the unlock signal.

The door lock device shown in FIG. 3 has a latch body 6 provided with the lock link 3 and the release link 7 so as to be swingable. Rods 8 and 9 are provided at both ends of the release link 7, respectively. The outer handle 10 and the inner handle 11 of the door are connected via the door, and the release link 7 is connected to the idle swing mechanism 1 provided in the latch body 6.
It is linked to a claw lever (release member) 13 through the second lever 2. When the lock link 3 is in the locked position, the swing mechanism 12 releases the release link 7 and the claw lever 13.
And the outer handle 10 and the inner handle 11 are swung.

The operation of each element constituting the door lock device is the same as that of the existing door lock device.
The detailed description is omitted.

Reference numeral 15 denotes an actuator unit, which is an S / L actuator 17
An idle swing mechanism 18 driven by the S / L actuator 17 and a power door lock actuator 2
1 and built-in. The actuator unit 15 is connected to the inner lock knob 19 via the rod 14a.
, And a lever 23 connected to the lock link 3 via a rod 14b so as to be swingable, and a shaft 22 rotated by the lever 22 is provided.
The idle swing mechanism 18 is interposed between a and the shaft 23a rotated by the lever 23.

In the S / L state, the idling mechanism 18
Lock link 3 and inner lock knob 1 in lock position
9, ie the rod 14a, the lever 2
To cut off the connection via 2, 23 and rod 14b,
Even if the inner lock knob 19 is operated, the inner lock knob 19 is swung so that the unlock operation by the inner lock knob 19 is disabled.

[0028] Whether the lock link of the door of the driver's seat 3 is in or unlock position in the locked position, but is detected by the lock link switch SW ₂ which is actuated in response to movement of the lock link 3, this Switch SW ₂
Are provided in the actuator unit 15.
Also within the actuator unit 15, as will be described later, is Suichi SW ₃ switched switch the motor circuit is provided in association with the operation of the actuator unit 15.

A power door lock actuator 21 provided in the actuator unit 15 is used to simultaneously lock other doors by a door lock operation of the key cylinder 1 of the driver's seat door. The motor that operates the lock actuator 21 can also serve as the motor that operates the S / L actuator 17.

Although the S / L actuator 17, the idle swing mechanism 18 and the power door lock actuator 21 are not shown in FIG. 3, the S / L actuator and the associated idle swing mechanism are described in, for example, 62-199555 and the like, and a detailed description thereof will be omitted.

FIG. 4 is a diagram showing a configuration of an electric circuit of the antitheft device according to the present invention.

The microcomputer 31 mounted on the circuit board 30 includes the key cylinder switch SW _1.
And in addition to the input port signal from the lock link switch SW ₂ is input, the ignition key switch SW _4, keyless switch SW ₅ (switch when the engine key in the ignition key cylinder is inserted becomes ON) and door switch SW ₆ From the input ports to which the signals from are input. Further, the microcomputer 31 displays an output port for outputting a U / L (unlock) command signal, an N / L command signal, and an S / L command signal, respectively, and indicates that the S / L state has been reached. And an output port for operating the indicator 25.

Furthermore, on the circuit board 30, a relay RL ₁ excited by U / L command signal outputted from the microcomputer 31, a relay RL ₂ which is energized by the N / L instruction signal, S / L a relay RL ₃ excited by the command signal is provided. These three relays RL ₁ ~RL ₃ is 12 volts and the fixed contact a connected to a battery power supply, a fixed contact b connected to ground, respectively connected to a movable contact c to the output terminal of the circuit board 30
In the non-excited state, the movable contact c is connected to the fixed contact b on the ground side, but when excited, the movable contact c is connected to the fixed contact a on the battery power supply side. I have.

The actuator 1 of the S / L mechanism 16
A changeover switch SW ₃ that is switched in accordance with the operation of No. 7
Is a fixed contact a connected to the N / L output terminal, a fixed contact b connected to the S / L output terminal, and a movable contact connected to one terminal of the motor M in the U / L state shown. And a contact c. The other terminal of the motor M is U /
Connected to L output terminal.

In this embodiment, the key cylinder 1
By rotating the key plate from the neutral position A to the locked position B plugged in, relay RL ₂ is energized it is output N / L instruction signal from the microcomputer 31, the power supply voltage to the N / L output terminal application Is done. Further, the key plate is moved to the neutral position A within a set time (for example, 3 seconds).
By turning twice repeatedly to the locked position B from being output S / L instruction signal relay RL ₃ is energized from the microcomputer 31, a power supply voltage is applied to the S / L output terminal. Further, by rotating the key plate from the neutral position A to the unlock position C, the relay RL ₁ is energized U / L instruction signal is outputted from the microcomputer 31, the power supply voltage to the U / L output terminal application Is done.

[0036] Next, U / L, N / L , the operation of the switch SW ₃ switched when migrating from each state of the S / L to other states will be described.

(1) From the U / L state to the N / L state From the U / L state shown in FIG.
From N / L when a command signal is output relay RL ₂ is energized, the fixed contact a of the switch SW ₃ current from N / L output terminals, the motor M, U / L output terminals and the relay RL
_It flows to the ground side for a predetermined short time through _one fixed contact b. This and briefly turning the predetermined motor M, for example, in the positive direction, the power door lock actuator 21 is driven, with all the doors will be locked to the N / L state, the movable contact of the switch SW ₃ c is switched to the fixed contact b side.

(2) From the N / L state to the S / L state From the N / L state, the microcomputer 31
When / L instruction signal is output relay RL ₃ is energized, the fixed contact b of the current S / L switch SW ₃ from the output terminal, the motor M, a fixed contact b of the U / L output terminals and the relay RL ₁ Then, it flows to the ground side for a predetermined short time. As a result, the motor M further rotates in the forward direction for a predetermined short time, the S / L actuator 17 is driven, the idling mechanism 18 is operated, the S / L state is established, and the indicator 25 is turned on for a predetermined time.

(3) From the N / L state to the U / L state From the N / L state, the microcomputer 31
/ L instruction signal is output when the relay RL ₁ is energized, the motor M current from U / L output terminals, the switch SW
_{The current} flows to the ground through the fixed contact b of No. ₃ , the S / L output terminal and the fixed contact b of the relay RL3 for a predetermined short time. As a result, the motor M rotates in the reverse direction for a predetermined short time, the power door lock actuator 21 is driven in the release direction, and all the doors are unlocked and the U / L
With a state, the movable contact c of the switch SW ₃ is returned to the fixed contact a.

(4) From the S / L state to the U / L state From the S / L state, the microcomputer 31
/ L instruction signal is output when the relay RL ₁ is energized, the motor M current from U / L output terminals, the switch SW
₃ fixed contact b, S / L output terminal and relay RL ₃
Flows to the ground side for a longer time than the above through the fixed contact b. As a result, the motor M rotates in the reverse direction for a predetermined long time, the S / L actuator 17 is driven in the release direction, and the idling mechanism 18 is made inoperative. The power door lock actuator 21 is driven in the release direction, it becomes all the locks are released U / L state of the door, the movable contact c is a fixed contact a of the switch SW ₃
Return to the side.

FIG. 5 is a timing chart showing the operation of the embodiment of the present invention.

At time t1, the key cylinder switch S
When the lock signal from the W ₁ is outputted, a predetermined pulse width T
1 and the power door lock actuator 22 (FIG. 1) is activated to enter the N / L state, and the rising edge E1 of the N / L signal is generated.
, The set time is set to a predetermined time T3 (for example, 3 seconds).
Is set (corresponding to claim 4). At time t2 before the set time T3 of the timer elapses, the key plate inserted into the key cylinder 1 is again operated to the lock position to generate the N / L signal output again, so that the S / L signal output is generated. As a result, the S / L actuator 17 (FIG. 1) is actuated to shift to the S / L state, and the indicator 25 indicating that the S / L state has been reached is displayed for a set time T4 (for example, 3 seconds). It is lit for a while. Also, the N / L state and S / L
By operating the key cylinder switch SW ₁ to the unlocked position in the state, U / L with a predetermined pulse width T1
A signal output occurs and returns to the U / L state.

When the S / L state is shifted to the S / L state in a very short time after the N / L state, the S / L actuator 17 may malfunction.
An OFF time of time T2 is provided after time T1, and even when the key plate is operated a plurality of times in a very short time, the N / L signal output is at least the OFF time of T2 between adjacent pulses. (ON prohibition time) intervenes. The times T1 and T2 are determined according to the performance of the S / L actuator 17.

As described above, when the key plate inserted into the key cylinder 1 is operated to the lock position a set number of times, for example, twice, within the set time T1 of the timer, the state shifts to the S / L state. Contrary to S / L
Transition to the state can be prevented.

The timer may start counting from the falling edge E2 of the N / L signal. If the key plate is operated to the lock position more than the set number of times (two times in FIG. 5) within the set time T3 of the timer, the S / L state may be maintained. On the contrary, when the lock position is operated more than the set number of times (for example, three times), the U /
The state may return to the L state. Then, by mistake, S
When the S / L state has been set, the S / L state can be immediately released.

Alternatively, regardless of the number of times the key plate is operated, if the key plate is again operated to the lock position within a predetermined time after being operated to the lock position, S / S
An L signal output may be generated.

Further, according to the present invention, it is possible to shift to the S / L state also by a lock signal from a so-called keyless entry unit, which can lock and unlock the door locking mechanism by remote control operation from a position away from the vehicle. Can also be configured. Although illustration of the configuration and detailed description of the configuration in this case are omitted, pressing the lock button provided on the remote control operation member (locking operation means) once causes N / N
The state may be changed to the L / L state, and the state is shifted to the S / L state when pressed a predetermined number of times within a predetermined time.

As described above, the configuration is such that the operation can be shifted to the S / L state by both the operation of the key cylinder 1 by the key plate and the operation from the keyless entry. Becomes By providing the timer time T3, after the timer time elapses, even if the lock button of the remote control operating member is erroneously pressed in the N / L state (contrary to the driver's intention), the S / L state is set. The transition can be prevented.

FIGS. 6 to 10 are a series of flowcharts showing an example of a processing routine executed by the microcomputer 31 of FIG. This processing routine is executed, for example, every 15 ms.
W indicates processing for determining the _first operation state, first key cylinder switch SW ₁ it is determined whether the change in the unlocked (S1), if the change in the unlocked (S1: YE
S), it is determined whether or not the U / L signal is being output, that is, whether or not the time is T1 (S2). And U
If the / L signal is being output (during time T1) (S2: YE
S), the process proceeds to S28 in FIG. 8, and if the U / L signal is not being output (S2: NO), the U / L output flag and the S / L cancel flag are set (S3, S4).

Next, if no key cylinder switch SW ₁ is changed to the unlocked (S1: NO), determines whether the change in the lock (S5), if changed to the lock (S5: YES ), keyless switch SW ₅ is OF
Whether F (S6), also determines the ignition switch SW ₄ is whether OFF the (S7). These determinations are for preventing the driver from being locked in the vehicle by the S / L.

[0051] and, OFF is keyless switch SW ₅
In it (S6: YES), and if the ignition switch SW ₄ is OFF (S7: YES), the timer set time T3 (. For convenience referred to as "T3 timer" other as well) whether is set Is determined (S8),
If the T3 timer has not been set (S8: N
O), because the change to the lock of this key cylinder switch SW ₁ is meant to be a first time, it sets the timer T3 (S9), if N / L signal is being output (S10: NO) , N / L output flags are set (S
11).

[0052] On the other hand, if the keyless switch SW ₅ or ignition switch SW ₄ is accustomed to ON (S6, S
7: NO), cancels the T3 timer (S12),
Proceed to S10.

Next, if the T3 timer has already been set (S8: YES), the current key cylinder switch S
Since the change to the lock of W ₁ it is meant to be a second or subsequent, along with the set again the T3 timer, S / L
A hold flag is set (S13). Here, the S / L hold flag is set despite the S / L condition being satisfied for the following reason.

That is, as described above, if the N / L state continuously shifts from the N / L state to the S / L state, the actuator may malfunction.
, Set the T2 OFF time (ON prohibition time)
The next N / L signal is not output unless this OFF time has elapsed since the / L state. Therefore, the state does not shift to the S / L state. And
If the N / L signal is not being output including the OFF time T2 (S14: NO), the N / L output flag and the S / L
The output flag is set at the same time (S15, S16),
The process proceeds to S28 in FIG. In addition, N including the OFF time T2
If the / L signal is being output (S14: YES), the direct S
Proceed to 28.

FIG. 7 shows a process for determining the S / L cancel condition. In S1, S5 in FIG. 6, when the key cylinder switch SW ₁ is determined to be in the unlocked, not also changed to the lock (S1, S5: NO), S
/ L is determined whether or not the state (S17), at S / L state (S17: YES), and if the keyless switch SW ₅ is a ON (S18: YES), to cancel the T3 timer (S19) , Ignition switch SW ₄ is O
If it is FF (S20: NO), the process proceeds to S28 of FIG.
If the ignition switch SW ₄ is accustomed to ON (S2
0: YES), and set a U / L output flag (S2).
1) Set the S / L cancel flag (S2
2) The process proceeds to S28 in FIG.

[0056] On the other hand, keyless switch SW ₅ is in the OFF (S18: NO), and the ignition switch SW ₄
There if OFF (S23: NO), the process proceeds directly to S28, keyless switch SW ₅ is in OFF (S18: N
O), and if the ignition switch SW ₄ is ON (S23: YES), to cancel the T3 timer (S24), the processing proceeds to S28.

Next, also unlock the key cylinder switch SW _1, it does not also change the lock (S1, S5:
NO), when it is not in the S / L state (S17: N
O), determines whether the keyless switch SW ₅ is turned ON (S25), if the keyless switch SW ₅ even if the ignition switch SW ₄ is also a OFF (S25, S2
6: NO), the process proceeds to S28, the keyless switch SW ₅ is in OFF (S25: NO), and when the ignition switch SW ₄ is ON (S26: YES), and keyless when the switch SW ₅ is ON (S25: YE
S), cancel the T3 timer, clear the S / L hold flag (S27), and proceed to S28.

[0058] FIG. 8 is a process of determining the state of the lock link switch SW _2.

First, in the S / L state (S28: YE
S), the process proceeds to S36 in FIG. 9 without performing any processing. S /
If not L state (S28: NO), the lock link switch SW ₂ it is determined whether the change in the unlocked (S
29), if the lock link switch SW ₂ is no change in the unlocked (S29: NO), determines whether the change in the lock (S30). If the lock is changed (S30: YES), it is determined whether the N / L signal is being output (S31). If the N / L signal is not being output (S31: NO), N The / L output flag is set (S32), and the process proceeds to S36 in FIG. In addition, when the lock link switch SW ₂ has not changed the lock to unlock (S29, S30: NO), and the lock link switch SW ₂ is not changed to the lock (S30: YE
S), if the N / L signal is being output (S31: YE)
S), and proceed to S36.

On the other hand, when the state is not the S / L state (S28:
NO), when the lock link switch SW ₂ is changed to the unlocked (S29: YES), if not in U / L signal is output (S33: NO), clears the S / L suspension flag with canceling the T3 timer (S3
4) The U / L output flag is set (S35).
If the / L signal is being output (S33: YES), S36
Proceed to.

In S36 of FIG. 9, it is determined whether the ON time T1 of the N / L signal and the OFF time T2 following the N / L signal have ended, and if they have ended (S36: YES), the microcomputer 31 The U / L port, N / L port and S / L port are all cleared (S37), and it is determined whether or not the OFF time T2 is set (S38). If it is not necessary to set the OFF time T2 (S38: NO), the N / L output flag (T1 + T2) is cleared (S39). If the S / L hold flag is set (S40: YES), N The / L output flag and the S / L output flag are set simultaneously (S41, S42). Also,
When it is necessary to set the OFF time T2 (S3
8: YES), the OFF time T2 is set (S4)
3).

Next, when the S / L signal is output in S41, the indicator 25 in the driver's seat is turned on for a time T4, and when the T4 timer expires (S4).
4: YES), the indicator port of the microcomputer 31 is cleared (S45).

FIG. 10 shows a case where the U / L output flag is set in the flowcharts shown in FIGS.
3, S21, S35), when the N / L output flag is set (S11, S15, S32, S41), when the S / L output flag is set (S16, S42), and when the S / L cancel flag is set. When done (S22)
Shows the contents of the subroutine processing respectively executed.

FIG. 11 is a flowchart schematically showing a processing routine according to the present invention.

[0065] First, the key cylinder switch SW ₁ it is determined whether the change in the lock (S51), if changed to the lock (S51: YES), starts a T3 timer (S52), the key cylinder switch SW _While the number of times the lock has been changed to ₁ is less than the set number of times (S53: N
O, once when the set number is 2 times, once and twice when the set number is 3 times), increments the counter for counting the number of times that the key cylinder switch SW ₁ is changed to the lock (S54), and An N / L signal is output (S5
5).

[0066] If the key cylinder switch SW ₁ has been determined to have changed to lock more than the set number of times (S53: YE
S) If the T3 timer is within the operating time (S56: YES), the N / L signal and the S / L signal are output simultaneously (S57, S58).

FIG. 12 is a flowchart schematically showing a processing routine according to the second aspect.

The processing of S61 to S65 in FIG.
If the description because it is same as the process of S51~S55 of the drawings, a key cylinder switch SW ₁ is determined to have changed to the lock setting number of times or more (S63: YES),
Examines whether or not the key cylinder switch SW ₁ is changed to the lock by setting the number of times (S66), is determined to have changed to the lock by setting the number of times (S66: YES), and the T3
When it is determined that the time is within the operating time of the timer (S67: YES), the N / L signal and the S / L signal are output simultaneously (S68, S69).

[0069] On the other hand, when the key cylinder switch SW ₁ is determined to have changed to the lock exceeds the set number of times (S
66: NO), if the time is within the operating time of the timer (S70: YES), a U / L signal is output (S7).
1).

FIG. 13 is a flowchart showing a main part of a processing routine according to a fourth aspect.

[0071] First, the key cylinder switch SW ₁ it is determined whether the change in the lock (S81), if changed to the lock (S81: YES), outputs the N / L signal having a predetermined pulse width T1 (S82). Next, this N /
It is checked whether the L signal was OFF last time (S8).
3) If it was OFF last time (S83: YES), the T3 timer is started (S84). That is, the T3 timer starts in response to the rising edge E1 (FIG. 5) of the N / L signal.

FIG. 14 is a flowchart showing a main part of a processing routine according to the fifth aspect.

[0073] First, the key cylinder switch SW ₁ it is determined whether the change in the lock (S91), if changed to the lock (S91: YES), outputs the N / L signal having a predetermined pulse width T1 (S92). Next, this N /
It is checked whether or not the L signal has been turned off (S93).
If F (S93: YES), the N / L signal is turned on last time
(S94), and if it is ON last time (S94: YES), the T3 timer is started (S94).
95). That is, in this case, the timer starts in response to the falling edge E2 of the N / L signal.

The processing routine corresponding to claim 6 is shown in FIG.
S8 to S16. Also, the S / L, because the driver is prevented from being confined in the vehicle compartment, if the keyless switch SW ₅ or ignition switch SW ₄ is an ON, but S / L state is made to be canceled (FIG. 7), further, while the ignition switch SW ₄ is oN, even if the microcomputer 31 outputs any signal, in order not to shift to S / L state, means as shown in FIG. 15 May be provided on the circuit board 30.

[0075] That is, in FIG. 15, when the ignition switch SW ₄ is turned ON, the B voltage is applied to the input circuit 26, the input terminal of the input port and the inverter 27 of the microcomputer 31 becomes "H" level Therefore, the output terminal of inverter 27 attains "L" level. Since the output port of the microcomputer 31 and the output terminal of the inverter 27 are connected to two input terminals of the AND circuit 28, the microcomputer 3
Regardless of the output of 1, as long as the output terminal of the inverter 27 is at the "L" level, the output terminal of the AND circuit 28 is at the "L" level. Therefore, the output contact of the relay RL ₄ the exciting coil is connected to the collector circuit of the npn transistor 29 applied the gate of the AND circuit 28 is turned OFF, the motor M for driving the S / L actuator B Voltage Is not supplied, and the S / L actuator does not operate.

FIG. 16 shows that the S / L state is prevented from being released when, for example, the thief opens the hood of the engine room and makes an incorrect connection with the power supply battery to turn on the ignition. 6 is a flowchart showing a process to be performed.

In this case, the logic is such that the S / L state is not released unless the engine key is inserted into the ignition key cylinder even if the ignition is turned on. First, it is determined whether the current state is the S / L state (S101). If the state is the S / L state (S101: YE)
S), it is determined whether or not the ignition is ON (S10)
2) Even if the ignition is ON (S102: YE
S), if plugged in engine squeaking in the ignition key cylinder, i.e., if the keyless switch SW ₅ does not become the ON (S103: NO), S
/ L state is not released. Then, an ignition ON (S102: YES), and if the keyless switch SW ₅ is ON (S103:
YES), the U / L output process is performed for the first time (S104).

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing a configuration of an embodiment of a vehicle antitheft device according to the present invention.

FIG. 2 is a schematic diagram around a key cylinder switch provided on a key cylinder of a door.

FIG. 3 is a diagram showing a schematic configuration of a door lock device.

FIG. 4 is a schematic diagram of an electric circuit in one embodiment of the vehicle antitheft device according to the present invention.

FIG. 5 is a timing chart showing conditions for shifting to an S / L state.

FIG. 6 is a flowchart showing a processing routine executed by a microcomputer;

FIG. 7 is a flowchart showing an example of a processing routine following FIG. 6;

FIG. 8 is a flowchart showing an example of a processing routine following FIG. 6;

FIG. 9 is a flowchart illustrating an example of a processing routine subsequent to FIGS. 6 and 7;

FIG. 10 is a diagram showing the contents of subroutine processing executed when a flag is set in the flowcharts of FIGS. 6 to 9;

FIG. 11 is a flowchart of a processing routine according to claim 1;

FIG. 12 is a flowchart of a processing routine according to claim 2;

FIG. 13 is a flowchart of a main part of a processing routine according to claim 4;

FIG. 14 is a flowchart of a main part of a processing routine according to claim 5;

FIG. 15: When the ignition switch is ON, S /
Schematic diagram showing an example of means for prohibiting a transition to the L state

FIG. 16 is a flowchart showing one measure for preventing theft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Key cylinder 3 Lock link 6 Latch body 7 Release link 15 Actuator unit 16 Super lock mechanism 17 Super lock actuator 18 Empty swing mechanism 19 Inner lock knob 21 Power door lock actuator 25 Indicator 30 Circuit board 31 Microcomputer

Claims (6)

[Claims] 1. A locking mechanism for locking and unlocking an opening / closing body such as a door or a trunk lid of a vehicle at a closed position, locking operation means for operating the locking mechanism, and a predetermined operation of the locking operation means. An anti-theft device for a vehicle, comprising: a lock restraining mechanism that is actuated by an operation to lock the locking mechanism in a locked state and disable unlocking operations other than the unlocking operation of the locking mechanism by the locking operation means. An anti-theft device for a vehicle, wherein the locking and restraining mechanism is operated to be locked by a predetermined number of locking operations within a predetermined time of the locking operation means. 2. The vehicle anti-theft device according to claim 1, wherein the locking and restraining mechanism is operated only by repeating the locking operation of the locking operation means for the set number of times. 3. The vehicle according to claim 1, further comprising pulse signal generating means for generating a pulse signal having a predetermined pulse width every time the locking operation by the locking operation means is performed. Anti-theft device. 4. A timer for measuring the predetermined time,
4. The vehicle anti-theft device according to claim 3, wherein the timer starts timing in response to a rising edge of the pulse signal generated by the locking operation by the locking operation means. 5. A timer for measuring the predetermined time,
4. The vehicle antitheft device according to claim 3, wherein the timer starts timing in response to a falling edge of the pulse signal generated in accordance with the locking operation by the locking operation means. 6. A locking mechanism for locking and unlocking an opening / closing body such as a door or a trunk lid of a vehicle at a closed position, locking operation means for operating the locking mechanism, and a predetermined operation of the locking operation means. An anti-theft device for a vehicle, comprising: a lock restraining mechanism that is actuated by an operation to lock the locking mechanism in a locked state and disable unlocking operations other than the unlocking operation of the locking mechanism by the locking operation means. Signal output means for outputting a command signal for restraining the locking restraint mechanism when the locking operation is performed again within a predetermined time since the locking operation by the locking operation means was performed last time. Vehicle anti-theft device.