JPH01287385A - Robbery preventor for vehicle - Google Patents

Abstract

PURPOSE:To provide a robbery preventor along with a keyless entry system by using a constitution in which when an opening and closing device is unlocked by in a keyless manner, a warning releasing means is operated by command from a lock control unit, and a set warning state by a warning setter is released. CONSTITUTION:An intrinsic unlocking signal is sent out from the signal transmitter of a transmitting means 2 and received by any one of the right-handed door receiver 27 of a receiver 3, left-handed receiver 28, and back-door receiver 29. The signal is then judged and processed in the control circuit of the receivers 27-29, and the warning release command circuit of a lock control unit 5 is operated by signals from the control circuit. The operating coil of the relay of a warning releasing means 19 is excited by signals from the command circuit, and warning release signals are further sent out from the relay 19 to a warning control unit 14. Warning state set by the first and second warning setters 16 and 17 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicle anti-theft device, and more particularly to a vehicle anti-theft device installed in a vehicle equipped with a keyless entry system.

[Conventional technology]

When occupants leave the vehicle, even if the doors and other openings are closed and locked, they may forcibly break the locks or window glass, open the doors, and take away items inside the vehicle. Alternatively, the vehicle may be stolen by manipulating the ignition switch with a metal fitting to start the engine and stealing the vehicle itself. In order to prevent such theft, each opening/closing body of the vehicle is closed and locked in sequence, and the last door is locked in the closed state without a key (keyless lock) using a unique signal transmitted from the transmitter. If the door or other opening/closing body is forcibly unlocked or opened without the key, or if the ignition switch is turned on, an 8-alarm will be issued and the anti-theft device will make the vehicle inoperable. It is being

However, in the case of such a device, even if the vehicle is in the alert state, if the occupant uses the key to open the bank door etc. to take out an item inside the vehicle, the alert state is canceled, and even if the driver closes the bank door etc. afterwards, the state is canceled. I was careless and left it as it was. Therefore, after putting the vehicle in the alert state, when the bank door etc. is opened with the key, the alert state is canceled once, but when the back door etc. is closed, the anti-theft device returns to the alert state. 500
It is described in Publication No. 52.

[Problem to be solved by the invention]

By the way, the above-mentioned conventional theft prevention device is, for example, as described in Japanese Patent Application Laid-open No. 159268/1983.
It cannot be used directly in vehicles equipped with keyless entry systems that use a transmitter to open, open, or unlock doors without a key. This is because the anti-theft device activates and issues an alarm even if the driver or the like unlocks the door without a key.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a vehicle anti-theft device that can be installed together with a keyless entry system.

[Means to solve the problem]

The vehicle anti-theft device of the present invention includes a transmitting means for transmitting a predetermined unique signal, a receiving means provided in the vehicle for receiving the unique signal, and an opening for controlling door locks etc. using the signal from the receiving means. , a lock control unit, and a door lock means for performing operations such as door locking based on a signal from the lock control unit, and a first opening/closing body and a second opening/closing body among the opening/closing bodies provided in the vehicle. Applies to vehicles equipped with a keyless entry system that can be individually locked or unlocked without a key.

This anti-theft device for a vehicle includes an opening/closing detection means for detecting the open/closed state of each of the opening/closing bodies, and a first key detection means for detecting the use of a key in the locking portion of the first opening/closing body among the opening/closing bodies. and a second key detection means for detecting the use of a key to the locking part of the second opening and closing body in the opening and closing body, a lock detection means for detecting the locking of the first opening and closing body, and excluding the first opening and closing body. When a close signal and a lock signal are received for the first opening/closing body without receiving a key detection signal in a state where the closing signal of each opening/closing body is received, the alarm means responds to the opening signal of each opening/closing body and the ignition signal of the engine. a first alert setting means for setting a first alert state;
Warning release means is provided for releasing the first warning state in response to a command signal from the lock control unit when the first opening/closing body or the second opening/closing body is unlocked by the keyless entry system.

[For production]

When all of the first opening/closing bodies are locked in the closed state without using a key from the state in which the opening/closing bodies except the first opening/closing body are closed and locked, the 1st'':X precept state occurs.In other words, the alarm The means emits Mlu when at least one opening/closing body is opened without a key or when an ignition switch of the engine is turned on.

When the keyless entry system is activated, when a unique signal for door locking is sent from the transmitting means to the receiving means installed in the vehicle, a control start signal is output to the lock control unit, and the door lock is activated. A signal to start the locking operation is output from the control unit to the locking means, and the first
The opening/closing body or the second opening/closing body is locked. On the other hand, when the receiving means receives a signal to unlock the first opening/closing body or the second opening/closing body from the transmitting means, a signal to start an unlocking operation is output from the lock control unit to the locking means, and the first opening/closing body is body or the second opening/closing body is unlocked. At this time, a signal to start operation is output from the lock control unit to the alarm release means, and the first alarm state described above is released.

〔Effect of the invention〕

When the opening/closing body is unlocked without a key, the alarm release means is activated by a command from the lock control unit provided in the keyless entry system, and the first alarm state set by the first alarm setting means is released. Therefore, the occupant can unlock the opening/closing body without a key without any problem. As described above, according to the present invention, a warning system can be installed in a vehicle equipped with a keyless entry system without complicating the device and without any problems.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments.

The vehicle anti-theft device shown in this embodiment is installed in a vehicle equipped with a keyless entry system that allows door locking and unlocking operations without a key, and is configured as follows.

As shown in FIG. 1, which shows the main configuration of the device, the keyless entry system 1 consisting of the part surrounded by broken lines includes a transmitter carried by the driver and transmitting a predetermined unique lock signal or unlock signal. means 2, a receiving means 3 provided in the vehicle for receiving the lock signal or unlock signal, and a controller 4 consisting of three microcomputers, which controls door locks, etc. by signals from the receiving means 3. A lock control unit 5 is provided, and a lock means 6 is provided which performs door locking and other operations based on signals from the lock control unit 5.

On the other hand, the warning system 7 consists of parts not surrounded by broken lines, and includes opening/closing detection means 8 to 10 for detecting the open/closed states of opening/closing bodies such as doors, and a first opening/closing body among the opening/closing bodies. a first key detection means 11 for detecting the use of a key to a locking part of the locking part of the second opening/closing body in the opening/closing body;
A second key detection means 12 for detecting the use of the key and a lock detection means 13 for detecting the locking of the first opening/closing body are provided.

Then, the warning control unit 14 in the controller 4 receives the close signal and the lock signal for the first opening/closing body without receiving the key detection signal while receiving the closing signal of each opening/closing body except the first opening/closing body. When the alarm means 15 receives the first alarm setting means 16 which creates a first alert state in response to the open signal of each opening/closing body and the ignition signal of the engine, and the key detection signal of the second opening/closing body, the alarm means 15 issues an alarm. a second alarm setting means 17 for creating a second alarm state in which the means 15 does not respond to the open signal of the second opening/closing body; and a return means for returning the second alarm state to the first alarm state in response to the closing signal of the second opening/closing body. 18, when the first opening/closing body or the second opening/closing body is unlocked by the keyless entry system 1, the first alarm setting means 16 sets the first alarm state or the second alarm setting means 17 sets the second alarm state.
A warning canceling means 19 for canceling the warning state is provided.

Next, the arrangement of the present device in a vehicle will be explained based on FIG. 2. In the figure, 20 is a left-hand drive, three-door hatchback type vehicle equipped with this device.
21 is a left door which is a first opening/closing body, 22 is a right door which is a first opening/closing body, 23 is a back door which is a second opening/closing body, and 24 is a bonnet which is a third opening/closing body.

To explain the keyless entry system 1, the transmitting means 2 is a transmitter that is compactly housed in the head of the mechanical key 25, and has a built-in battery, crystal oscillator, control circuit, etc., and transmits a unique signal by pressing a button. It has a lock signal transmitter and an unlock signal transmitter that transmit.

The receiving means 3 is provided corresponding to each door, and a right door receiving tffi 27 and a left door receiver 28 are integrally arranged back to back toward each door at the center of the ceiling of the front part of the vehicle compartment. A receiver 29 is provided in the trunk room. The receiving means 3 is provided with an antenna, a receiving circuit, a control circuit, etc., and the control circuit determines whether the received radio wave matches a unique signal stored in advance, and receives the unique signal. Then, a signal to start door lock control is output to the lock control unit 5 in the controller 4 provided in the instrument panel 26.

The lock control unit 5 includes a lock switch 31 provided in each of the receivers 27 to 2 or the door lock knob 30.
Based on the signal from the unlock/lock switch 32, the locking means 6 provided in the first opening/closing body 21, 22 and the second opening/closing body 23 is activated. It outputs an operation command signal and controls doors and locks.

The door lock actuator 6 is composed of a small motor, a reduction gear, an electromagnetic clutch, etc., and is a power door lock that can also lock or unlock the door 22 on the passenger side by operating the door lock knob 30 on the driver's side. forming a system.

Regarding the warning system 7, a horn 15 as a warning means and a flagge cellite 33 are provided at the front of the vehicle, and a cassette switch 34 for stopping power supply to the starter is provided in the engine room. , these constitute the warning activation means 35. Additionally, a notification lamp 37 and a buzzer 38 are provided as notification means 3G for the inside of the vehicle.

A warning control unit I4 that controls these operations is housed in the controller 4 together with the lock control unit 5.

On the other hand, to explain the detection means connected to the input side of the warning control unit 1-14, the ignition 39 is provided with an ignition switch 39a and a key switch 39b for detecting the presence or absence of the engine key.
~24 includes an opening/closing detection means 8~ for detecting the open/closed state.
10 are provided. Further, the first opening/closing body 21, 22 and the second opening/closing body 23 are provided with first key detection means 11 for detecting whether or not a key is inserted into the key cylinder for locking.
and a second key detection means 12 are provided to check whether the driver leaves the vehicle or not depending on whether or not the key is used. The first opening/closing bodies 21 and 22 are further provided with lock detection means 13 for detecting the locked state of the door lock knob 30 linked to the lock means 6.

Next, the configuration of the present device will be explained in more detail with reference to FIG. 3. First, the warning system 7 is in a released (inactive) state when at least one of the ignition switch 39a and the key switch 39b is on. As will be described later, when any of the doors 21, 22 or 23 is unlocked by the keyless entry system 1 without a key, the unlocked state is established, and the keyless entry system 1 and the warning system 7 are compatible with each other without any problems. Measures are being taken to do so.

Now, the vigilance control unit 14 has an initial state setting section 41 that does not enter the vigilance state, and the first vigilance 21! A first alert preparation unit 42 that creates a readiness state, a second alert preparation unit 43 that creates a second alert readiness state that enters a substantial alert state, a first alert state setting unit 44 that creates a first alert state, and a second alert state. a second alarm setting means 45 for creating a second alarm setting means 45, a return means 18 for returning from a second sound alarm state to a first alarm state, and an operation control means 50 for activating the alarm activation means 35 to create a first operating state and a second operating state. ' Equipped with '. The intermittent conditions, transition conditions, and output contents of each of the above states are basically as shown in Tables 1 and 2.

Each setting unit or means in the warning system 7 of this device will be specifically explained below.

First, the initial state setting section 41 receives off signals from both the ignition switch 39a and the key switch 39b and close signals from the first to third opening/closing detection means 8 to 10 to set the device to an initial state, and then When it receives an on signal from at least one of the ignition switch 39a and the kill switch 3'9b, it returns to the released state.

The first alert preparation unit 42 receiving the initial state signal
- When an open signal is received from at least one of the third opening/closing detection means 8 to 10, the warning system 7 is placed in the first warning preparation state, and then an off signal is received from the first to third opening/closing detection means 8 to 10. If the conditions for the next second alert readiness state are not satisfied when received, the state is returned to the initial state. In addition, this first warning preparation section 42 detects the first warning preparation state Table 1 Table 2 (Part 1) Table 2 (Part 2) (hereinafter referred to as the margin) using the open signal of the first opening/closing detection means 8. When setting, the buzzer 38 sounds for a short time.

The second alert preparation section 43 that receives the first alert preparation signal and the first alert state setting section 44 constitute a first alert setting means 48. That is, the second alarm preparation section 43 detects the second and third opening/closing detection means 9 in the first alarm preparation state. Upon receiving the closed signal of lO and the off signal of the first and second key detection means 11.12 (no key is inserted), the first
When the signal from the key detection means 11 remains off and the close signal from the first opening/closing detection means 8 and the lock signal from the lock detection means 13 are received, the present warning system 7 is activated to the second warning f! Be in a state of readiness. Then, the first alert state setting unit 44 sets the alert system 7 to the first alert state when the time T+ (for example, 15 seconds) set by the first timer 49 has elapsed from the second alert preparation state.

That is, upon receiving the eleventh command signal, the operation control means 50 activates each opening signal of the first to third opening/closing means 8 to 1O, the lock release signal of the lock detection means 13, and the ON of the ignition switch 39a. A first alarm state is entered in which the alarm activation means 35 is activated in response to all signals.

In other words, all of these signals serve as triggers for alarm activation.

Furthermore, if the continuation condition for the second alert preparation state is not satisfied by the time the set time T+ has elapsed, the second alert preparation unit 43 determines the state of the alert system 7 by the initial state setting unit 41. In addition, the first alert state setting unit 44
In the first alert state, whether an ON signal is output from the first key detection means 11 (cancellation condition A) or the key switch 39a
When an on signal is output from the ignition switch 39a (cancellation condition B), the state of the warning system 7 is left to the determination of the initial state setting section 41 by the operation of the cancel switch circuit interlocked with each key cylinder.

Further, the second ``:!i precept preparation section 43 lights up the notification lamp 37 during the first half of the set time T1 of the second alert preparation state, blinks the notification lamp 37 during the second half, and returns to the first alert state. The buzzer 38 sounds for a short time when the transition occurs.On the other hand,
The first alert state setting unit 44 causes the notification lamp 37 to blink in this first alert state.

Next, when the second alarm setting means 45 receives an ON signal from the second key detection means 12 in the first alarm state, the control means 50 activates the alarm system 7 in response to the open signal from the second opening/closing detection means 9. When the cancellation condition A or B is satisfied, the state of the alarm system 7 is left to the initial state setting section 41 to determine by operating the cancel switch circuit. Once the return means 18 receives an open signal from the second opening/closing detection means 9 in the second warning state and then receives a close signal, it returns the warning system 7 from the second warning state to the seventeenth warning state. Further, the second warning setting means 45
causes the notification lamp 37 to flash while the second alert state is being set.

Further, the operation control means 50 includes a first control section that operates all of the warning operation means 35, and a cut switch 34.
and a second control section that operates only the second control section. That is, when the activation trigger is input in the first or second alert state, the first control unit starts the second alert state from that point on.
Set time T2 by timer 51 (for example, 5 minutes)
A first alarm operating state is set in which all of the horn 15, cant switch 34, and flasher light 33 are operated. In this case, once the activation trigger is input, even if the trigger is no longer input, the set time T2
All of the warning activation means 35 are activated, and each time the trigger is input again, the count of the set time T2 is restarted from zero.

On the other hand, the second control section releases the operation of the horn 15 and the franchise light 330 after the completion of counting the set time T2, and sets the second alarm operation state in which only the cut switch 34 is operated. Further, even when the second control section is operating, if the trigger is input again, the operation control means 50 will shift to the operating state by the first control section.

Further, when the second opening/closing detection means 9 outputs a close signal and the second key detection means 12 outputs an on signal (cancellation condition C), or when the cancellation condition A is satisfied, the operation control means 50 operates the cancel switch circuit. The state of the warning system 7 is left to the initial state setting section 41 to determine.

Further, the operation control means 50 causes the notification lamp 37 to blink when the warning activation means 35 is activated.

It should be noted that the notification lamp 37 is turned on when an on signal is output from at least one of the first and second key detection means 11.12, regardless of the state of the present fukai system 7.

In this embodiment, when the side door 21, 22 or the bank door 23 is unlocked without a key by the keyless entry system 1, it is determined that no vigilance is necessary, as in the case where the cancellation condition A or C for that door is satisfied. The alert state of the alert control unit 14 is canceled via the alert canceling means 19, so that there will be no hindrance to subsequent driving, etc.

Such an alarm release operation is performed by a circuit as shown in FIG. In the figure, each receiver 27 to 29 (first
The alarm release command circuit 52 consisting of a transistor whose input terminal is connected to the control circuit of the lock control unit 5 (see figure)
The operating coil of a relay 19 constituting a cancel switch circuit that is interlocked with the key system of any opening/closing body, such as the left door 21, is connected to the output terminal of the transistor. In such a circuit, when a unique unlock signal from the transmitter [2 is received by one of the receivers 27 to 29, it is discriminated and processed by the control circuit of the receivers 27 to 29, and the signal from the control circuit is The alarm release command circuit 52 is activated.

The signal from the alarm release command circuit 52 excites the operating coil of the relay 19, which is alarm release means, and sends an alarm release signal to the alarm control unit 14, thereby canceling the alarm state.

In this way, in this embodiment, by using one of the cancel switch circuits 19 already provided in each door as a warning canceling means when receiving an unlock signal, keyless entry is possible without providing any special components. System 1 and warning system 7 function together without any problems. In order to avoid confusion in the control operation after receiving the unlock signal as described above, basically, as shown in the flowchart of FIG. After the alarm state is released (step 2, hereinafter referred to as 82, etc.), a door unlock signal is output to the keyless entry system 1 (S3).

The control operation of the warning system 7 will be explained below based on the flowchart shown in FIG. Note that the control operation in step 30 shown in the flowchart of FIG. 5 is simple, so it is
It is omitted in the figure.

First, if at least one of the engine key switch 39b and the ignition (IG) switch 39a is on, it is in the released state, and if both are off and the opening/closing bodies 21 to 24 are fully closed, it is in the initial state, and at least one of them is open. If so, the first alert preparation state is entered (Sit, 512).

Next, in the first alert preparation state, the first opening/closing body 21
Alternatively, if the lock knob 22 is opened by operating the lock knob 22, the buzzer 38 sounds (S13, 514).

In other words, when the release state passes through the initial state to the first warning preparation state, the release of the first opening/closing body 21 or 22 from the vehicle interior makes it presumed that the occupant will leave the vehicle 20, and the buzzer 38 The activation of this alerts the occupants to shift to alert mode. Then, confirm that the key switch 39b or ignition switch 39a is not turned on, that only one of the first opening/closing bodies 21 or 22 is opened, and that all other opening/closing bodies are closed or locked. When the lock signal from the lock detection means 13 and the close signal from the first opening/closing detection means 8 are received while the first key detection means 11 is off for the opened first opening/closing body 21 or 22, that is, the keyless state is detected. When a mouth/tsuku is made, the second alert preparation state is entered (815-517).

In the second alert preparation state, the operation of the first timer 49 and the notification lamp 37 is started (318, 51
9). Then, at the time T1 set by the first timer 49, the keyless unlock signal is received, or the engine key switch 39b, the first key detection means 11
and at least one of the second key detection means 12 is turned on (
key detection) or if at least one of the first to third opening/closing bodies 21 to 24 is open, the notification lamp 37 is turned off and returns to the initial state; otherwise, after the set time T+ M! i
Afterwards, the buzzer 38 is sounded and the state shifts to the first alert state (820
~525).

In the first alert state, the notification lamp 37 flashes and the activation trigger (first and second key detection means 11.12
If there is an open signal from at least one of the first to third opening/closing bodies 21 to 24, a lock release signal, or a signal from the ignition switch 39a without an on signal from the ignition switch 39a, the operation of the second timer 51 is started (turned on). and enters the first warning activation state (326-529). That is, the horn 15 is activated, the cut switch 34 is activated (cutting off the electricity to the scooter), and the flasher light 33 is activated.

On the other hand, when there is no activation trigger input in step S27, no keyless unlock signal is received, no key is detected by the first key detection means 11 (cancellation condition A), and the engine key is not activated by the key switch 39b. Turning on the ignition switch 39a after the detection of
If there is no cancellation condition B) and a key is detected by the second key detection means 12, the opening of the second opening/closing body 23 is confirmed and the second alert state is entered (830-534). Note that when the keyless unlock signal is received or the above cancellation condition A or B is satisfied, the notification lamp 37 is turned off (S35), the system returns to the initial state, and the second key is detected in step 33. If not, it returns to the first alert state.

In the second warning state, if there is a closing signal for the second opening/closing body 23, the return is made to the first warning state-1 (S36), and if there is no closing signal, other operations other than the signal for the second opening/closing body 23 are performed. The presence or absence of a trigger is checked (S37). If there is no activation trigger, the second alert state is continued; if there is, the second timer 51 is activated and the first alert operating state is entered (S37-
328, 529).

In the first alarm activation state, a keyless unlock signal is received, or cancellation conditions A or C are satisfied, that is, a key is detected by the first key detection means 11, or the second opening/closing body 23 is activated. If it is closed and a key is detected by the second key detection means 12, the operation of the warning activation means 35 is stopped, the notification lamp 37 is turned off, and the judgment system returns to the initial state (S38 to S43.535). Keyless unlock signal is not received or cancellation condition A
Or, if C does not hold, check the elapse of the set time T2, and if the activation trigger is input again before that elapse, the operation of the second timer 51 is restarted from zero and the first alert activation state is continued ( S44, 545-328, 529), if the set time T2 has elapsed, the second warning activation state is activated (346).

That is, the operation of the horn 15, fludge, and dry drive 33 is stopped, and only the cut switch 34 is allowed to continue operating.

Then, in the second alert activation state, if a keyless unlock signal is received (S47) or if cancel condition A (S48) or C (S49, 550) is satisfied, the alert activation means 35 and the notification lamp 37 are activated. The operation is stopped and the judgment system returns to the initial state, and if the above-mentioned cancellation conditions etc. are not satisfied and the activation trigger is input again, the operation of the second timer 51 is restarted and the system moves to the first warning activation state ( S51).

Therefore, in the vehicle anti-theft device, the occupant locks all the opening/closing bodies 21 to 24 in the closed state and locks the vehicle 20.
If you close 7 of the first opening/closing body 21 with the keyless lock when leaving the vehicle, the first alert state will be entered, but even if you open the second opening/closing body 23 by using the key in this state, the second alarm state will not occur. Just by moving, the state of alert itself will not be lifted.

That is, even if the second opening/closing body 23 is opened, the horn 15 etc. will not operate, but while the occupant is away from the vehicle 20, someone else may enter the vehicle compartment through the opening of the second opening/closing body 23 and enter the vehicle without the key. Even if you try to start the engine, when the ignition switch 39a is turned on, the horn 15, flasher light 33, and cut switch 34 are activated, making it impossible to start the engine and preventing someone from entering the passenger compartment. will be surrounded by Wt[j.

In addition, when in the first alert state, another person may
Forcibly remove the key cylinder from the second key detection means 1.
Even if the switch 2 is turned on and the second opening/closing body 23 is opened, the vehicle 20 will be protected from theft because the vehicle 20 will be in the second alert state.

Further, even if the occupant enters the second alert state by himself/herself, the second opening/closing body 23 is closed to return to the first alert state, so there is no need to perform a keyless lock to enter the alert state again.

In this embodiment, in particular, since the keyless entry system 1 is also provided, as described above, the first opening/closing body 21.
22 or the second opening/closing body 23, and the signal is transmitted to the receiver 27, 28 or the second opening/closing body 23.
When the signal is received at 9, the warning operation is stopped so as not to interfere with subsequent driving.

In the above embodiment, the back door of a hatchback car was selected as the second opening/closing body, but it may also be a trunk lid.
Appropriately select the first and second opening/closing bodies from among the plurality of opening/closing bodies of the vehicle, such as using the opening/closing body as an opening/closing body, or in the case of a four-door vehicle, using the front door as the first opening/closing body and the rear door as the second opening/closing body. I can do it.

Furthermore, in the above embodiment, removing the engine key is one of the conditions for the anti-theft device to enter the initial state, but instead of removing the engine key, the condition for the initial state may be that the vehicle speed drops below a certain speed. You can also do it.

FIG. 7 shows a different embodiment, in which the lock control unit 5 determines that it is receiving an unlock signal, and disables the determination circuit 61 having an output terminal to which a predetermined voltage is applied when receiving the unlock signal. As a means, it is provided in the alarm control unit 14, and the operating coils of relays 62, 63 having normally closed contacts connected to the horn 15 and the flasher light 33 are connected to the output terminal thereof.

With such a circuit, when the first opening/closing body 21, 22 or the second opening/closing body 23 is unlocked without a key, the horn 15 and the franchise light 33 can be prevented from operating.

FIG. 8 shows another embodiment, in which a relay 71 is used as the alarm release means, and the alarm control unit 1
The input terminal of the relay 71 is connected to the battery power source, while the operating coil of the relay 71 is connected to the output side of a transistor constituting a warning release command circuit 72 within the lock control unit 5.

The input side of the transistor is connected to the control circuit of the receivers 27 to 29 of the keyless entry system 1, and
29 receives an unlock signal from the transmitter 2, the actuating coil of the relay 71 is energized to open the normally closed contact, and power supply to the warning control unit 14 is stopped. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the vehicle anti-theft device of the present invention, FIG. 2 is a perspective view showing the arrangement of components, FIG. 3 is a system diagram of the warning system, and FIG. 4 is a circuit diagram of the alarm release means, FIG. 5 is a flowchart for explaining the basic alarm release operation when a keyless unlock signal is received, and FIG. 6 is a flowchart for explaining the control operation of the alarm system. FIG. 7 is a circuit diagram of a warning release means in a different embodiment, and FIG. 8 is a circuit diagram of a warning release means in another embodiment. 1-keyless entry system, 2-transmission means (transmitter), 3-reception means, 5-lock control unit, 6-lock means, 8-first opening/closing detection means, 9-second opening/closing detection means, 10-th 3 opening/closing detection means, 11...-first key detection means, 12-second key detection means, 13-lock detection means,
14-=Kai control unit, 15-Alarm means (horn),
16-first alarm setting means, 19, 61.71-warning release means, 20.-vehicle, 21-first opening/closing body (left door), 2
2-first opening/closing body (right door), 23-second opening/closing body (back door), 24--third opening/closing body (bonnet).

Claims (1)

[Claims] (1) A transmitting means for transmitting a predetermined unique signal, a receiving means provided in the vehicle for receiving the unique signal, a lock control unit for controlling door locks, etc. by signals from the receiving means, and the lock. The vehicle is equipped with a locking means that performs operations such as door locking based on a signal from a control unit, and the first and second opening/closing bodies of the opening/closing bodies provided in the vehicle can be individually locked or unlocked without a key. A vehicle anti-theft device installed in a vehicle equipped with a keyless entry system, which includes an opening/closing detection means for detecting the opening/closing state of each opening/closing body, and a locking portion of a first opening/closing body among the opening/closing bodies. a first key detection means for detecting the use of the key; a second key detection means for detecting the use of the key to the locking portion of the second opening/closing body in the opening/closing body; and a second key detecting means for detecting the locking of the first opening/closing body. lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means for detecting a lock detection means; a first alarm setting means for creating a first alarm state in response to an opening signal of the engine and an ignition signal of the engine; An anti-theft device for a vehicle, characterized in that an anti-theft device for a vehicle is provided with an alarm canceling means for canceling the first alarm state in response to a command signal.