JPH0617648Y2 - Anti-theft device for automobile - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is an anti-theft car alarm that issues an alarm when any door, bonnet or trunk of a car is unlocked by an illegal means or method other than a key. Regarding the device.

(Prior Art) In recent years, an anti-theft device has been developed that issues an alarm when a locked door, hood or trunk of a car is opened by an illegal means or method other than a key, and is actually installed in a car.

This type of vehicle anti-theft device, for example, switches to a standby state when a switch or the like provided in a hidden place of the vehicle is operated, and if an unauthorized means other than the key is used, the door of the vehicle, etc. It was configured to give an alert as soon as it was opened.

By the way, in a vehicle equipped with such an anti-theft device for an automobile, if a person other than the driver accidentally touches the switch, the vehicle immediately shifts to a standby state, for example, a person in a seat is about to get off, If the door inner lock knob is operated to the unlock side, the alarm device will be activated. Also, to get things out of the trunk after getting off,
If the trunk is unlocked before getting off and the switch is accidentally operated immediately after getting off, there is also a problem that an alarm is issued and the driver himself is surprised. Furthermore, it has not been possible to select whether or not to enter the alarm standby state conventionally. Therefore, for example, there is a problem that an alarm is issued when a person who wakes up after locking a sleeping car and raising the inner lock knob to get out of the car.

(Purpose of the Invention) The present invention has been made to solve the above-mentioned problems in the conventional anti-theft device for an automobile. In order to allow only the driver to enter the standby state, the key is removed from the ignition switch. When the door on the driver's side is locked without using the key when it is pulled out, when it is so-called keyless locked, it is systematically determined whether it is possible to shift to the standby state with some time grace. It is an object of the present invention to provide an anti-theft device for an automobile, which is confirmed and shifts to a standby state only when it is confirmed.

Therefore, according to the present invention, as shown in FIG. 1, when the door on the driver's side of a vehicle is keyless locked, a predetermined time elapses,
It is provided with a standby device 1 which detects whether or not each lock portion of the automobile is locked, and enters a standby state for alarm generation when all of the lock portions are locked. In this standby device 1, when any door, bonnet, trunk or the like of the automobile is unlocked by means other than a key, that is, unlocked, or when the tire of the automobile is stolen, the body of the automobile tilts. When at least an abnormality relating to theft occurs, an abnormality signal is input from the abnormality detection device 2. When the standby device 1 is in the standby state and the abnormality detection device 2 outputs an abnormality signal, the alarm device 3 issues an alarm in response to a command from the standby device 1. Specifically, this alarm is issued by turning on and off the horn (horn) of the automobile, blinking all turn signal lamps, and the like.

That is, the alarm device 3 performs an alarm operation even if the door of the vehicle is unlocked until a predetermined time elapses after the door on the driver's side of the vehicle is keyless locked and the standby device 1 enters the standby state. Not performed. It is systematically confirmed whether or not it is possible to shift to the standby state within this predetermined time, and only when it is confirmed, the shift to the standby state is performed. Then, after this standby device shifts to the standby state,
When at least an abnormality related to theft occurs, such as unlocking any door of the automobile by means other than the key, the abnormality detection device 2 outputs an abnormality signal and the alarm device 3 issues an alarm.

(Effects of the Invention) According to the present invention, since only the driver can enter the standby state by the keyless lock operation on only the driver side door, only the driver can enter the standby state. There is no chance that a person will accidentally set it to the standby state and give an alarm.

In addition, since the keyless lock operation is used to put it in the standby state, it is not necessary to provide an extra switch inside or outside the vehicle. In addition, if the keyless lock operation is simply performed, the standby state is set. No separate operation is required.

In addition, when the key is removed from the ignition switch and the driver's side door is locked without using the key, counting starts, and after a predetermined time has elapsed, the count is incremented It detects whether or not the lock is locked, and when all the lock parts are locked, it will be in the standby state for alarm generation, so even if the keyless lock operation is performed with the trunk etc. open, the alarm will be issued immediately. It does not sound, and unnecessary alarms do not confuse the surroundings.

If you forget to remove the key from the ignition switch and lock the keylessly, even a legitimate person such as a car owner may unlock without using the key, but in this case an alarm is issued. Never.

Recently, many of them have an alarm for forgetting to remove the key, and since the engine is running when the key is inserted, it is immediately noticeable that the keyless lock is accidentally made, but the key was placed in the seat etc. If you do a keyless lock as it is, the engine is stopped and it is very likely that you will leave the car without realizing it. And
In this case, there is a very high possibility that the key will be in the seat or the like and will be stolen. However, in this case, the alarm is always on standby, and the alarm is issued when the door or the like is opened by a means other than the key, so that the alarm cannot be stolen.

Further, according to the present invention, if it is not necessary to simply issue an alarm by locking the vehicle in a parking lot at home without locking it, or if the vehicle is temporarily locked but does not need to be issued an alarm, lock it and issue an alarm. In case of need, etc., the driver has the effect of freely selecting whether or not to put it in the standby state.

Further, in the present invention, the alarm state is released when the door cylinder switch is turned on during the alarm.
Therefore, even if the alarm is activated, the alarm can be released by inserting the key into the door and turning it to either direction, and it cannot be released unless it is turned in the unlock direction. As a result, the alarm state can be released promptly, and nuisance in the neighborhood can be prevented.

(Embodiment) A concrete embodiment of the present invention will be described below with reference to FIGS. 2 to 7.

In FIG. 2, a control unit 11 has a function as the standby device 1 of FIG. 1, and is composed of a one-chip microcomputer and its accompanying components.

The control unit 11 is provided with input terminals 11a, 11 for abnormal signals and the like to which various abnormal signals described later are respectively input.
, 11o, output terminals 11p, 11q, ..., 11u for outputting a signal instructing an alarm, a power supply terminal 11v and a ground terminal 11w.

The input terminal 11a of the control unit 11 is connected to the ignition end IG1 of the ignition switch 12. The ignition switch 12 is turned on until a key (not shown) is inserted and rotated from a predetermined position or more until the key is pulled out, and when the key is pulled out. A keyless switch 13 that is turned off while being inserted and rotated to a predetermined position is provided. The keyless switch 13 is provided with a positive electrode of a battery B having a negative electrode and a control unit 11 via fuses F ₁ and F _2. Of the input terminal 11b.

In addition, the input terminal 11c of the control unit 11
And ground, between the input terminal 11d and ground, and between the input terminal 11e and ground, as shown in FIG. 3, a door key cylinder switch provided on the passenger side door 15L of the automobile 14. 16L, driver's side door 15R
A door key cylinder switch 16R provided in the vehicle and a key cylinder switch 18 provided in a trunk (a back door in the case of a 5-door vehicle) 17 are connected to each other.

Between the input terminal 11f of the control unit 11 and the ground, as shown in FIG.
Front lock link switch 19R provided on 5R
Are connected.

Between the input terminal 11g of the control unit 11 and the ground, as shown in FIG.
Front lock link switch 19L provided on 5L
And a rear lock link switch 21R provided on the right door 20R of the rear seat and the left door 20 of the rear seat.
The rear lock link switch 21L provided at L is connected to each.

Between the input terminal 11h of the control unit 11 and the ground, as shown in FIG.
Inner lock switch 22R provided on 5R and inner lock switch 2 provided on passenger side door 15L
2L is connected.

Similarly, the input terminal 11 of the control unit 11 is
Between i and the ground, as shown in FIG. 3, an inner lock switch 23R provided on the right door 20R of the rear seat and an inner lock switch 23L provided on the left door 20L of the rear seat. Are connected.

By the way, a mechanism for locking and unlocking the door 15R and the like of the automobile 14 is provided inside the outer handle 24 and the door 15R provided outside the door 15R, as shown in FIG. The action of the inner handle 25 is
When the door key cylinder 28 or the inner lock knob 29 is operated to the lock side, the lock mechanism 26 acts to interrupt the actions of the outer handle 24 and the inner handle 25. The door is locked.

In FIG. 4, the key cylinder switch 16R is turned on only during the key operation period of the door key cylinder 28, and turned off in the state of being longer than that. Also, the inner lock switch 2
2R is turned on when the inner lock knob 29 is operated in the unlock position direction. Further, the lock link switch 19R is turned on when the lock mechanism 26 is unlocked. The mechanism for locking and unlocking the door 15L on the passenger side also has the same configuration as that in FIG.

A door key cylinder 28 is not provided on the rear seat doors 20R and 20L.

Referring again to FIG. 2, a passenger side door switch 31L, a rear seat right door switch 32R, and a left door switch 32L are connected between the input terminal 11j of the control unit 11 and the ground. The cathode of the diode D ₁ is connected to the input terminal 11j of the control unit 11, and the diode D ₁
The anode of is connected to a fixed contact of a room lamp switch 67 described later. And control unit 1
The door switch 31R on the driver's seat side is connected between the input terminal 11k of No. 1 and the ground, and the cathode of the diode D ₂ is connected to the input terminal 11k of the control unit 11, and the anode of this diode D ₂ is connected. Is connected to the fixed contact of the room lamp switch 67.

The four door switches 31R, 31L, 32R and 32L are the doors 15R, 15L, 20R and 20L, respectively.
Turns on when opens and turns off when closes.

The remaining input terminals 11l and 11 of the control unit 11
A trunk switch 33, a bonnet switch 34, a tilt sensor 35, and an option switch 36 are connected between m, 11n, and 11o and the ground, respectively.

Here, the relationship between the on / off states of the switches described above and the states of the members to which these switches are attached is as shown in the following table.

On the other hand, the output terminal 11p of the control unit 11
If, between the connected power line lB to the positive pole of the battery B through the fuse F _3, standby state the motor vehicle anti-theft device generates an alarm when the door 15R and the like is opened by means other than the key A security lamp 37 is connected to confirm the operation state of the device by sequentially lighting or blinking in the process of being set to.

The drive coil X ₁ of the starter cut relay 38 is connected between the output terminal 11q of the control unit 11 and the power supply line 1B.

The starter cut relay 38 is a relay for interrupting the power supply to the starter solenoid 39 so that the engine of the automobile 14 cannot be started when the alarm is issued. Normally closed contact X of the starter cut relay 38
_One end of _1- b is connected to the starter terminal ST of the ignition switch 12. Further, when the vehicle 14 is equipped with an automatic transmission (not shown) between the other end of the normally closed contact X ₁ -b and the ground, the inhibitor switch 41 and the starter solenoid 39 are connected in series. Connected to. The inhibitor switch 41 is turned on when the shift lever of the automobile 14 is in the N (neutral) or P (parking) range, and the engine can be started only in the N or P range.

The horn switch 42 is connected between the output terminal 11r of the control unit 11 and the ground, while the drive coil X ₂ and the fuse F ₄ of the horn relay 43 are connected between the output terminal 11r and the power line IB. Are connected in series. One end of the normally open contact _X 2 -a of the horn relay 43 is connected to a power supply line lB through fuse _{F 4,} the horn 44 between the other end and ground normally open contacts _X 2 -a of the horn relay 43 and 45 And are connected in parallel.

Turn signal lamps 51, 52 and 53 are connected between the output terminal 11s of the control unit 11 and the ground, and a contact point 55 of a hazard switch 54 is connected between the output terminal 11s and the power supply line 1B. And the flasher 56 are connected in series.

Turn signal lamps 57, 58 and 59 are connected between the output terminal 11t of the control unit 11 and the ground.

Between the output terminal 11s and the output terminal 11t of the control unit 11 is connected to the normally closed contact X ₃ -b for the relay 61, further, the output terminal 11s is turn fixed contact of the combination switch 62 for direction indication Connected to 62L,
The output terminal 11t is connected to the right turn side fixed contact 62R of the combination switch 62. A normally open contact X ₄ -a of the relay 63 is connected between the movable contact 62 c of the combination switch 62 and the flasher 56.

Drive coils X ₃ of the drive coils X ₄ and the relay 61 relays 63 that each one end connected both to an ignition terminal IG1 of the ignition switch 12, connected to ground through a current one contact 64 for each of the other ends hazard switch 54 Has been done.

In FIG. 2, 65 and 66 are room lamps,
67 is a room lamp switch, 68 is an alternator, the power supply terminal 11v of the control unit 11 is connected to the power supply line 1B through the fuse F ₅ , and the ground terminal 11w is connected to the ground.

Next, the operation of the vehicle antitheft device having the above-described configuration will be described with reference to the flowcharts shown in FIGS. 5, 6 and 7.

The anti-theft device for a vehicle shown in FIG. 2 has a state in which the door 15R on the driver's side of the vehicle 14 is locked before the keyless lock,
The door 15R is keyless locked, enters a standby state after a predetermined time, and the following operations (a) to (g) from mode 0 to mode 6 are performed until the alarm state or the alarm state is released.

(A) Mode zero is an operation when a key is inserted in the ignition switch 12, and after the initialization of step 1001 to the initialization of step 100 in FIG. 5, steps 1002, 1003, 1004 and 1 are performed.
This is done by executing 005.

(B) Mode 1 is the operation when the key is removed from the ignition switch 12 but the door 15R on the driver's side is not yet opened. In the mode 1, the security lamp 37 blinks for 30 seconds, Indicates that the mode 1 status is set. Mode 1 is step 10 in FIG.
02,1003,1006,1007,1008,10
09, 1010 and 1011 are performed.

(C) In mode 2, the key is removed from the ignition switch 12, the door 15R on the driver's side is opened, and the other doors 15L, 20R, 20L, the bonnet 30 (see FIG. 3) or the trunk 17 are opened. In the mode 2 state, the security lamp 37 blinks for 30 seconds. Mode 2 is step 1002, 1003, 1006, 1012, 1 in FIG.
013 is executed, and steps 1014, 1015, 101 are executed.
After performing either 6 or 1017, steps 901, 902 and 903 are performed.

(D) In mode 3, the key is removed from the ignition switch 12, the driver side door 15R is opened, and the other doors 15 are opened.
L, 20R, 20L, trunk 17 and bonnet 3
0 is closed and all doors 15R, 15
L, 20R, 20L lock link switch 19R, 1
This is the operation when 9L, 21R, and 21L are off, and in the state of mode 3, the security lamp 37 is lit for 30 seconds. Mode 3 includes steps 1002 and 10 in FIG.
03,1006,1012,1013,1014,10
15, 1016, 1017, 1018, 1019 and 1020.

(E) Mode 4 is an operation before the door 15R on the driver's seat side is keyless locked and the alarm state is entered. In the state of Mode 4, the security lamp 37 is lit for 30 seconds. Mode 4 is performed by executing steps 1002 and 1003, steps 1006 to 1011 and steps 1021 to 1032 of FIG.

In addition, when it is determined to count up in step 1025, the hood 30, the doors 15R, 15L, 20
If any of the R, 20L, or the trunk 17 is opened, or if the option switch 36 is turned on, the process returns to the subroutine 1002 to continue the mode 4 state. (F) Mode 5 is a standby state operation Then, the security lamp 37 blinks 6 times at intervals of 1.5 seconds. Mode 5 includes steps 2001 to 2014, 2026 and 2 in FIG.
This is performed by executing 016, 2017, and 2032.

(G) Mode 6 is an operation in the alarm state and when the alarm state is released. Mode 6 includes steps 3001 to 30 in FIG.
This is done by executing 13.

Next, the operation of the vehicle antitheft device shown in FIG. 2 will be described step by step from mode 0 to mode 6.

(A) Mode zero When the engine of the vehicle 14 (see FIG. 3) is rotating or the key is inserted in the ignition switch 12, the control unit 11 (see FIG. 2)
After executing steps 1000 and 1001 in FIG. 5, a subroutine for checking the state of each related switch is executed in step 1002, and it is determined in step 1003 whether the keyless switch 13 is on. If the key is inserted in the ignition switch 12,
In step 1004, the keyless switch 13 is turned off and the driver side door switch 31R is never turned on (TJCNT ← 0), and step 1
At 005, the mode is set to zero (MODE ← 0). Then steps 1002, 1003, 1004 and 10
Execute 05.

(B) Mode 1 In the mode 0 mode, the ignition switch 12
When the key is removed from the control unit 11, the control unit 11 executes step 1006 to determine whether the door switch 31R of the driver side door 15R is on or off (whether the door 15R is open or closed), and the door 15R is closed. If the current mode is 4, it is determined in step 1007.

Since the mode is zero at this point, the control unit 11 executes step 1008, and
It is determined whether or not the current mode is 1. Since the mode is zero at this point, the control unit 11 executes step 1009 and sets the mode to 1 (MOD
After E ← 1), the security lamp 37 is blinked for 30 seconds (SET30). Control unit 11
In step 1011, the keyless switch 13 is turned off and the door switch 31R is turned on (TJCNT =
1) Determine whether there is something. At this time TJCN
Since T = 0, the control unit 11 returns from the subroutine 1002 to steps 1003, 1006 and 1006.
Steps 1007 and 1008 are executed, but since the mode is 1 at this time, step 1011 is executed next.
After that, the subroutine 1002 to step 1003
The steps 1006, 1007, 1008 and 1011 are repeatedly executed.

(C) Mode 2 In the state of Mode 1, when the door 15R on the driver's seat side is opened and the door switch 31R is turned on, the control unit 11 executes steps 1006 to 1012, and the keyless switch 13 is off and the driver's seat side is turned off. The door switch 31R of the door 15R is turned on (TJCN
After executing the set T ← 1), step 1013
, The door switch 31R is off and the front lock link switch 19R needs to be judged for 4 seconds (FKCNT ←
Set it to 0). The control unit 11 then executes the determinations in steps 1014 to 1017,
ON / OFF of door switches 31L, 32R, 32L other than the driver's seat, ON / OFF of trunk switch 33, ON / OFF of bonnet switch 34, and front lock link switch 19L, rear lock link switch 21R, 21L on the passenger side Judge ON or OFF. When at least one of these switches is on, the control unit 11 is currently in step 901.
It is determined whether or not the mode is 2. At this point, the mode is 1, so the control unit 11 executes step 902 and sets the mode to 2 (MODE ←
2) After that, in step 903, the security lamp 37 blinks for 30 seconds. At the next timing, the control unit 11 starts from the subroutine 1002 to step 10
03, 1006, 1012, 1013 and execute 100
After executing any one of steps 4 to 1007, step 901 is executed, the process returns to the subroutine 1002, and thereafter this loop is repeatedly executed.

(D) Mode 3 In the above state, door switches 31L, 32 other than the driver's seat
R, 32L are off, trunk switch 33 is off, bonnet switch 34 is off, and front lock link switch 19L on the passenger side and rear lock link switch 2
Both 1R and 21L are turned off. That is, when all of the doors 15L, 20R, 20L other than the driver's seat, the trunk 17, and the bonnet 30 are closed and all the lock link switches 19R, 19L, 21R, 21L are turned off, the control unit 11 causes the step 101
At 9, set the mode to 3 (MODE ← 3) and step 1
At 020, the security lamp 37 is turned on for 30 seconds.

Next, subroutine 1002, steps 1003, 100
6 and steps 1012 to 1018 are executed, but at this point the mode is 3, and step 1018 returns to subroutine 1002.

Thereafter, subroutine 1002, steps 1003, 10
06 and steps 1012 to 1018 are repeatedly executed.

(E) Mode 4 Next, in the state of the above mode 3, the door 1 on the driver's seat side
5R is keyless locked. That is, when the door 15R on the driver's seat side is closed while maintaining the locked state, the keyless switch 13 is turned off, and the door switch 31R is turned off, the control unit 11 determines in step 1007 whether the current mode is 4 or not. To judge. Since the mode is 3 at this point, the control unit 11
Determines in step 1008 whether the mode is 1, sets the mode to 1 temporarily in step 1009, and executes step 1010 again.

After that, the control unit 11 performs step 101.
1, the keyless switch 13 is off and the door switch 3
It is determined whether the 1R has been turned on (TJCNT = 1), that is, whether the key has been pulled out from the ignition switch 12 and the driver's side door 15R has been opened. At this point, the ignition switch 12
Since the key has been pulled out from the door 15R on the driver's side and the door 15R on the driver's side has been opened, the control unit 11 executes step 1021 to determine whether or not the front lock link switch 19R on the door 15R on the driver's side is off. To judge.

At this time, since the door 15R on the driver's side is keyless locked, the front lock link switch 19R is off and the control unit 11 determines in step 1022 whether the mode is currently 4 or not. At this point the mode is set to 1, so step 10
At 23, after starting the counting of the waiting delay for defining the time from the keyless lock of the driver side door 15R until entering the waiting state, the mode is set to 4 at step 1024, and the concrete illustration Although not described, the process returns to the subroutine 1002 again and the subroutine 1002
The security lamp 37 is lit for 30 seconds when is executed.

The control unit 11 at step 1025
It is determined whether or not the count started above is counted up. Since the count has not been incremented at this point, the control unit 11 executes step 1034.
Then, one more count is started, and then the process returns to the subroutine 1002 again, and steps 1003, 1006, 1
007 is executed. Since the mode is 4 at this point, steps 1021 and 1022 are executed next, then steps 1025 and 1034 are executed, and step 1
Return to 002. Thereafter, the control unit 11 repeats the above operation until the count started in step 1023 is counted up.

When the above-mentioned count is counted up after the waiting grace time has elapsed, the control unit 11 proceeds to step 102.
6, 1027, 1028 and 1029 are executed sequentially,
It is determined whether or not the bonnet switch 34, the option switch 36, the door switches 31L, 32R, 32L other than the driver's seat and the trunk switch 33 are off.
These bonnet switch 34, optional switch 3
6, if at least one of the door switches 31L, 32R, 32L and the trunk switch 33 is turned on, the control unit 11 restarts the above another counting at step 1034, and returns to the subroutine 1002. Repeat the operation of.

At this time, if the trunk switch 33 is turned on, the control unit 11 proceeds to step 103.
After setting 30 seconds for 30 seconds, step 1034
At the above, another counting is started.

In this state, the bonnet switch 34, the option switch 36, and the door switches 31L, 32R, 32L
When the trunk switch 33 and all of the trunk switches 33 are turned off, the counting operation is repeated and the control unit 11 starts the step 10
At 30, it is determined whether this count has been incremented. This count is counted up in about 1.5 seconds from the start of counting to the counting up. Therefore,
When any of the bonnet 30, the doors 15L, 20R, 20L, the trunk 17, etc. is closed but not completely closed and reopened, the above counting is started again but not counting up. That is, the incomplete closing operation of the bonnet 30, the doors 15L, 20R, 20L, the trunk 17, etc. prevents the standby state from being entered.

When the other count is counted up, the control unit 11 executes step 1031, and in step 1035, it is in the state of counting for 30 seconds (TKCNT = 1) executed in steps 1025 and 2027 described later. To determine.

At this time, since TKCNT = 1 is not satisfied, the control unit 11 executes step 1032, the door switches 31R, 31L, 32R, 32L are off, and the lock link switches 19R, 19L, 21R, 21L are off for 4 seconds. It is determined whether the determination is unnecessary (FKCNT = 1).

In the case of TKCNT = 1, the control unit 11 executes step 1035 and determines the above-mentioned 30-second count.

(F) Mode 5 If FKCNT = 1 is not satisfied, as shown in FIG. 6, the 3-minute counting is started in step 2001. This is to prevent the alarm state from being entered when a child or the like remains in the passenger compartment of the automobile 14 and the inner lock knob 29 is inadvertently operated. When 30 seconds have passed with TKCNT = 1 and when FKCNT = 1, this 3-minute counting is not started.

After that, the control unit 11 proceeds to step 200.
Set the mode to 5 in 2 (MODE ← 5), step 20
Door switch 31R, 31L, 32R, 32L at 03
Off, lock link switch 19R, 19L, 21
It is necessary to set judgment for 4 seconds when R and 21L are off (F
Then, in step 2004, the initial value of the tilt sensor 35 at the parking position of the automobile 14 is stored or the initial position of the tilt sensor 35 is set (tilt sensor set).

The control unit 11 uses the subroutine 2005 to open the door switches 31R, 31L, 32 of the automobile 14.
The outputs of all the switches such as the R, 32L, and bonnet switch 34 already described and the inclination sensor 35, that is, the respective sensor outputs are read, and the following step 2 is performed.
In steps 006 to 2020, it is determined whether or not an abnormal signal is output from these sensors.

That is, the control unit 11 performs the tilt sensor 35 and the door switch 3 in steps 2006 to 2028 of steps 2006 to 2020.
1R, 31L. When it is determined that any one of 32R, 32L or the bonnet switch 34 is turned on, the alarm state described later is entered regardless of whether it is within 3 minutes after entering the standby state.

In addition, the control unit 11 performs step 2009.
When it is determined that the input terminal 11a is on, the keyless switch 13 is off and an alarm state is set when the engine is started without using a normal key, and when the keyless switch 13 is on, that is, When the engine is started using the normal key, the process returns to the label initialization (subroutine 1001) shown in FIG.

The control unit 11 at step 2010
The alarm state is also entered when it is determined that the option switch 36 is on.

The above steps 2009 and 2010 are also executed regardless of whether it is within 3 minutes after entering the standby state.

After executing the step 2010, the control unit 11 performs inner lock switches 21R, 21L, 23.
It is determined whether the R and 23L are on or off, that is, whether or not the inner lock knob 29 is operated to the unlock position side. When the inner lock knob 29 is moved to the unlocked position due to an inadvertent operation by a child or the like who remains in the vehicle, at step 2023, after counting T ₃ seconds, at step 2024, already at step 2001. It is determined whether or not the 3-minute count that has started counting for 3 minutes is counting up (whether or not 3 minutes have elapsed since entering the standby state).

If the waiting state is within 3 minutes, that is, the careless operation of the inner lock knob 29 to the unlock position by a child or the like left inside the keyless locked vehicle 14 is within the waiting state within 3 minutes. If so, the control unit 11 proceeds to step 2028 for FKC.
After setting NT to 1 (FKCNT ← 1), setting the mode to 4 again in step 2029, and canceling the setting of the tilt sensor 35 in step 2030, the subroutine 10 in FIG.
Return to 02.

After that, the control unit 11 enters the standby state and within 3 minutes, from this subroutine 1002, steps 1003, 1006, 1007, 1021, 1022 are executed.
1025 to 1032, 2002 to 2011, 2011
The loops 023 and 2024 are repeatedly executed, but when the inner lock knob 29 is operated, either the front lock link switches 19R and 19L or the rear lock link switches 21R and 21L are turned on with a slight delay.
The control unit 11 starts from the subroutine 1002 to steps 1003, 1006, 1007, 1021, 1
The loop of executing 036 and returning to the subroutine 1002 again is repeated.

During the execution of this loop, the inner lock knob 29 is returned to the lock position, and the front lock link switch 19R, 1
9L or rear lock link switch 21R, 21L
When is turned off, the control unit 11 starts from the subroutine 1002 to steps 1003, 1006, 100.
7,1021,1022,1025 to 1032,2
002 to 2014, 2026, 2016, 201
7, 2032 is executed, and the process returns to the subroutine 2005.
After that, the control unit 11 uses the subroutine 200
5, steps 2006 to 2014, 2026, 20
The loop returning from 16, 2017, 2032 to the subroutine 2005 is repeatedly executed to enter the standby state.

The counting of T ₃ seconds is started in the above step 2023. This is because when the operating time of the inner lock knob 29 is extremely short, the inner lock switches 22R, 22L, 2 are counted.
This is to prevent the alarm state from being immediately entered by turning on either the front lock link switches 19R, 19L or the rear lock link switches 21R, 21L with a delay after the 3R or 23L is turned off. That is, even if the inner lock switch 22R, 22L, 23R or 23L is turned off within 3 minutes in the standby state, the control unit 11 executes 2012 to 2024, 2028 to 2030 during counting T ₃ seconds, and the subroutine 1002 Return to step 1003
1006, 1007, 1021, 1022, 1025 to 1032, 2002 to 2012, 2024, 2
The loops 028 to 2023 are repeatedly executed, and the front lock link switch 19R,
19L or rear lock link switch 21R, 21
Either L is turned on. When either the front lock link switch 19R, 19L or the rear lock link switch 21R, 21L is turned on, the control unit 11 starts from the subroutine 1002 to steps 1003, 1006, 1007, 1021, 10.
Then, a loop for executing 36 and again returning to the subroutine 1002 is repeatedly executed.

The door 1 of the automobile 14 is in standby mode for 3 minutes.
As long as the 5R, 15L, 20R, 20L and the trunk 17 are not opened illegally, the control unit 11 determines the subroutine 2005, steps 2006 to 2014, 2026, 2016, 2017, 203.
From 2, the loop for returning to the subroutine 2005 is repeatedly executed, and a substantial standby state is entered.

During this standby, the tilt sensor 35, the door switch 31R,
When any of 31L, 32R, 32L, the bonnet switch 34, or the option switch 36 is turned on, and when the ignition switch 12 is turned on and the keyless switch 13 is turned off, all of them are in an alarm state described later.

Also, the trunk key cylinder switch 1 of the trunk 17
Even when 8 is turned off, the trunk switch 33 is turned on, and the T ₁ second count is increased, the alarm state described later is also set. This T ₁ second count is intended to prevent an alarm from being erroneously issued when the trunk 17 is opened due to variations in assembling the trunk key cylinder switch 18 and the trunk switch 33. That is, when the trunk switch 33 is turned on even though the trunk key cylinder switch 18 is turned off, the control unit 11 does not immediately turn to the alarm state, and the trunk key cylinder switch after the lapse of T ₁ second is reached. 18 and the state of the trunk switch 33 are judged, and T
_{If the} trunk key cylinder switch 18 is off and the trunk switch 33 is on even after _one second has elapsed, it is determined that the trunk 17 is illegally opened and the alarm state is set.

On the other hand, even if the trunk switch 33 is turned on, if the trunk key cylinder switch 18 is turned on within T ₁ second, the control unit 11 performs steps 2025 and 2027.
Through 2030 to return to the execution of the subroutine 1002 in FIG.
003, 1006, 1007, 1021, 1022, 1
By repeating the loop of executing 025 to 1029, 1033, 1034 and returning to the subroutine 1002 again, the standby state is released, and when the trunk 17 is closed thereafter, the standby state is resumed. It should be noted that the reason why the counting of 30 seconds is started in step 2027 is that if luggage is placed on the trunk 17, even if the trunk 17 is opened by a normal key operation, the trunk 17 is only halfway. Without opening, the trunk switch 33 maintains the off state. In this case, the trunk 17 is manually opened. At this time, the trunk key cylinder switch 18 has already been turned off, which causes an alarm state. This is to prevent this.

The door key cylinder switches 16R and 16L are switches that are turned on only while the keys are operated. However, even when the door key cylinder switches 16R and 16L are turned on by a normal key operation, , The standby state is released.

For example, when the door key cylinder switch 16R is turned on by a normal key operation, the control unit 11
Starts counting the key cylinder timer in step 2031.

By the way, the same situation as the trunk key cylinder switch 18 and the trunk switch 33 exists between the door key cylinder switch 16R and the lock link switch 19R, and the lock link switch 19R becomes the door key cylinder due to variations in the assembly of both. There are cases where the switch 16R is turned on after it is turned on, and cases where it is turned on before the door key cylinder switch 16R is turned on.

The operation in the case of these two cases will be described below.

[When the Door Key Cylinder Switch Is First Turned On] When the lock link switch 19R is turned on after the door key cylinder switch 16R is turned on, the control unit 11 proceeds from step 2016 to step 20.
31 is executed and the key cylinder timer count is started, and then in step 2017 the lock link switch 19R
Is determined to be off, and the process returns from step 2032 to execution of the subroutine 2005.

After that, when the lock link switch 19R is turned on, in step 2018, the control unit 11 determines whether the key cylinder timer, which has started counting, is up.

Normally, the lock link switch 19R is turned on when the door key cylinder switch 16R is turned on, but the lock link switch 19 is turned on at least until the timer is up after the door key cylinder switch 16R is turned off.
Since the R is turned on, the control unit 11 considers that the door lock is normally released, and returns to the subroutine 1001 in FIG. 5 as the key cylinder timer and the lock link timer are increased in step 2021. The standby state is released.

[When the lock link switch is turned on first] When the lock link switch 19R is turned on before the door key cylinder switch 16R is turned on, the control unit 11 controls the steps 2016 to 201.
7 is executed and it is determined that the lock link switch 19R is ON, and then in step 2018, it is determined whether or not the key cylinder timer is up. In this case, since the key cylinder timer count is not normally started, the control unit 11 determines that the key cylinder timer has timed out, executes steps 2019 and 2033, and then returns to the subroutine 2005. Then, the subroutine 200 is executed until the lock link timer expires.
5, the loop returning from step 2006 to 2014, 2026 to 2019, 2033 to subroutine 2005 again is repeatedly executed. When the lock link switch 19R is turned on by a normal key operation, the door key cylinder switch 16R is caused by a variation in the assembly of the door key cylinder switch 16R and the lock link switch 19R.
Even if the delay time of turning on R occurs, the door key cylinder switch 16R turns on before the lock link timer expires, and the control unit 11 proceeds to step 202.
1 is executed, the process returns to the subroutine 1001 of FIG. 5, and the standby state is released. Further, when the door key cylinder switch 16R is not turned on before the lock link timer is up, it means that the normal key operation is not performed, and at this time, the alarm state is set.

The standby state release by the door key cylinder switch 16L is also performed in the same manner as above.

(G) Mode 6 If any of the situations in which the above-described alarm should be issued occurs from the mode 5 mode, the control unit 11
After the counting of the alarm duration of 3 minutes is started in step 3001 of FIG. 7, the mode is set to 6 in step 3002.

The control unit 11 then proceeds to step 300.
At 3 from the output terminal 11q outputs a signal of "low" level to energize the solenoid X ₁ of the starter cut relay 38 shown in FIG. 2, the engine start of the normally closed contact X ₁ -b as an off To prevent The control unit 11 also outputs a "low" level signal from the optional output terminal 11u in step 3004. This optional output terminal 11u and power line l
If an alarm device (not shown) such as a voice synthesizer is connected between B and B, it is possible to give an alarm by voice or the like that the automobile 14 is in a stolen state.

The control unit 11 then proceeds to step 300.
At 5, it is determined whether or not the 3-minute count is up. If the 3-minute count is not up, step 3
The output of the output terminal 11r in 006 periodically as "low" level and a "high" level, the drive coil X ₂ of the horn relay 43 in FIG. 2 and the activation and de-energized in the period, the horn 44 Generates an alarm sound intermittently.

The control unit 11 simultaneously performs step 300.
At 7, the outputs of the output terminals 11s and 11t are periodically set to "low" level and "high" level, and the turn signal lamps 51, 52, 53, 57, 58 in FIG.
Blink 59 and 59.

The control unit 11 executes a routine for reading the outputs of the door key cylinder switches 16R, 16L, the keyless switch 13 and the input terminal 11a in the subroutine 3008, and thereafter turns on / off the door key cylinder switches 16R, 16L in step 3009. In step 3010, it is determined whether the keyless switch 13 is on or off, and in step 3011 it is determined whether the input terminal 11a is on or off.

That is, when the door key cylinder switches 16R and 16L are off and the keyless switch 13 is off, or when the door key cylinder switches 16R and 16L are off and the keyless switch 13 is on and the input terminal 11a is off, the above three-minute count is performed. The alarm action is performed until is raised.

Even during the alarm operation, when the door key cylinder switches 16R and 16L are turned on, that is, when the door cylinder is operated in either the lock direction or the unlock direction, or the keyless switch 13 and the input terminal 11a are turned on. If you do, the control unit 11
Returns to the subroutine 1001 in FIG. 5 and the alarm state is released.

When the count for 3 minutes has been incremented, the control unit 11 stops energizing the drive coil X ₂ of the horn relay 43 in step 3012, and then the turn signal lamps 51, 52, 5 in step 3013.
The blinking of 3, 57, 58 and 59 is stopped to stop the alarm operation.

Incidentally, the starter cut relay 38 continues to be turned on and continues to output a "low" level signal from the optional output terminal 11a.

According to the embodiment described above, after the door 15R on the driver's side of the automobile 14 is keyless locked, it is systematically confirmed whether or not it is possible to shift to the standby state within a predetermined time.
Since the standby state is entered only when it is confirmed, that is, when the keyless lock is performed, the doors 15L, 20R and 20L other than the driver side of the automobile 14 and the hood 3
0, the trunk 17 and the like are opened, the standby state is not immediately set, but when they are closed, the standby state is set. Therefore, the alarm state is not accidentally set. .

[Brief description of drawings]

FIG. 1 is an explanatory view showing the outline of an anti-theft device for a vehicle according to the present invention, FIG. 2 is a concrete circuit diagram of an embodiment of an anti-theft device for an automobile according to the present invention, and FIG. 3 is various sensors. 4 is an explanatory view of a mounting position of the door key cylinder switch, an inner lock switch and a lock link switch, and an explanatory view showing a relationship between a mechanism for operating these switches, FIG. 5, FIG. 6 and FIG. 2 is a flow chart for explaining the operation of the automobile antitheft device of FIG. 1 ... Standby device, 2 ... Abnormality detection device, 3 ... Alarm device.

Continuation of the front page (56) References JP-A-55-83641 (JP, A) JP-A-55-51641 (JP, A) Special Table-Sho 59-500464 (JP, A) JP-A 58-35694 (JP , A) JP-A-57-104439 (JP, A) JP-A-54-95431 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. When the door of the driver's seat is locked without using the key when the key is removed from the ignition switch, counting is started, and after a lapse of a predetermined time, the count is counted up, and then each lock portion of the automobile. It is detected whether or not is locked, and if all of the lock parts are locked, it will be in the standby state of alarm generation, and if any of the lock parts of the car is unlocked by the key, the standby state is released. Standby device and an abnormality detection device that outputs an abnormality signal when any of the lock parts above is unlocked by means other than the key, and when the standby device is in the standby state and the abnormality detection device outputs an abnormality signal An anti-theft device for an automobile, which is provided with an alarm device for issuing an alarm.