JPS62255260A - Burglarproofing apparatus - Google Patents

Abstract

PURPOSE:To positively prevent burglary of a vehicle during idle engine operation by incorporating in a burglarproofing apparatus with a ratio key a mechanism which is so positioned as to keep the engine speed to idle speed in a locked position irrespective of accelerating operation. CONSTITUTION:When a specific ratio signal from a portable radio transmitter 15 is received by a radio receiver 16 to close an unlocking relay 31, an unlocking command signal is inputted into a CPU10. Then, an unlocking operation signal b is sent through a switch circuit 14 to actuate a step motor 8 which causes extension of a rod 8A, so that an acceleration cable 3 is put in a tightened condition by a pulley 9, permitting actuation of an actuator 4 by depression of an accelerator pedal 2. On the other contrary, if a driver leaves a driver's seat with a radio transmitter 15 during idle engine operation, the unlocking relay 31 is opened, so that the step motor 8 is put out of operation, causing loosening of the cable 3 to keep idle engine operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an anti-theft device for a motor vehicle in which the engine must be kept in an idling state for a long period of time. The present invention is applicable to diesel engine-equipped vehicles that need to be stopped and operated for warming up or space heating, or to vehicles that cannot stop the engine in order to supply power current to other on-vehicle devices. suitable for

〔overview〕

The present invention provides a portable wireless transmitter and a wireless receiver that is unlocked when a wireless signal transmitted by the wireless transmitter is being received and locked when no wireless signal is received. In an anti-theft device for a car equipped with a wireless key, the engine is kept in an idling state even when the accelerator is operated in the locked state, so that the driver can keep the engine running in the idling state.
It allows you to leave the driver's seat.

[Conventional technology]

When starting a diesel car in a cold region or handling cargo for a long time, it is necessary to warm up the engine by idling the engine. In radio relay vehicles, etc., even if the driver leaves the driver's seat to supply power to the radio,
Unable to stop engine.

In this case, the engine key switch is inserted, so if the driver leaves the driver's seat, a third party may operate the vehicle without permission.

[Problem that the invention seeks to solve]

To prevent this, it is possible to prevent theft by using something equivalent to a second key switch to maintain the engine speed at idling, but the mechanism is complex and the driver must Since it has to be manipulated, it is not used in reality.

SUMMARY OF THE INVENTION An object of the present invention is to solve this problem and provide an anti-theft device for an automobile that does not require operation each time the driver leaves the driver's seat with the engine in an idling state.

[Means for solving problems]

The present invention has a portable shape, and includes a wireless transmitter that transmits a wireless signal modulated with a specific code, and an unlocked state when the wireless signal modulated with the specific code is received. In an automobile anti-theft device equipped with a wireless key including a wireless reception unit that becomes locked when this wireless signal is not received, in the locked state, the engine rotational speed remains at idling even if the accelerator is operated. The vF characteristic is that it has a structure that allows it to be held in the same position.

Preferably, the wireless signal is an electromagnetic wave or an ultrasound wave.

[For production]

The driver carries a wireless transmitter. This wireless transmitter may be turned on and the car's engine speed set to idling before the wireless transmitter is turned off, or the driver may carry the wireless transmitter with him and leave the driver's seat and the wireless receiver may become sensitive. When it runs out, the engine will remain idle. Even if a third party operates the accelerator pedal during this time,
Since the engine speed does not increase, the car cannot be moved. When the driver returns to the driver's seat and turns on the wireless transmitter again, the idling state is released and the vehicle can be driven.

Since the radio signal is modulated with a code unique to each vehicle, this vehicle cannot be moved by the radio transmitter of another vehicle.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block diagram of a first embodiment of the present invention. In FIG. 1, an engine 1 is started by a starter (not shown) and is in an idling state.

The amount of depression of an accelerator pedal 2 operated by a driver is detected by an actuator 4 via an accelerator cable 3. The rotation speed of the engine 1 is detected by a rotation sensor 6. The microprocessor 10 takes in necessary data including the detection outputs of the actuator 4 and the rotation sensor 6 via the interface 11, controls the step motor 7 according to a program stored in advance in the memory 13, and injects fuel into the engine 1. The bag Wt5 is driven to supply the required amount of fuel to the engine. Therefore, the rotational speed of the engine increases from that at idling,
When the clutch (not shown) engages, the car starts moving.

A wireless signal modulated with a specific code transmitted by the portable wireless transmitter 15 causes the wireless receiver 16 to activate the unlock relay 3.
1, an unlocking command signal a sent from a power supply (not shown) is input to the microprocessor 10 via the interface 12B, and the microprocessor 10 enters the unlocked state.

The feature of the present invention is that in the unlocked state, the step motor 8 is driven by a device activation signal constituted by the switch circuit 14, and the lever supported by the push rod 8A of the step motor 8 is activated. 9A
A pulley 9 is provided to keep the accelerator cable 3 in a tensioned state.

That is, the driver leaves the engine 1 in an idling state by normal operation in the driver's seat. When the driver leaves the driver's seat while carrying the wireless transmitter 15 in this state, the wireless signal from the wireless transmitter 15 is no longer received by the wireless receiver 16, and the unlocking relay 31 is opened. Therefore, the switch circuit 14 does not output the unlocking activation signal.

In FIG. 2, which is an explanatory diagram of the operation of the part within the circle A indicated by the dashed-dotted line in FIG.
When no input is made, as shown by the broken line, the bushing rod 8A does not extend and the pulley 9 relaxes the accelerator cable 3. Therefore, in this state, even if a third party enters the driver's seat and depresses the accelerator pedal 2, the actuator 4
Since the engine does not operate, the engine speed remains at idling.

When the driver returns to the driver's seat and drives the car normally,
The action of the anti-theft device of the present invention is stopped.

In the third embodiment, as shown in FIG. , into the key switch 33 provided on the instrument panel. As a result, even if the unlocking relay 31 is opened, the unlocking command signal a is not transmitted to the microprocessor 10.
Enter. Therefore, even if the wireless signal from the wireless transmitter 15 stops, the unlock operation signal is input to the step motor 8, and the accelerator cable 3 is kept under tension, so the driver can drive the car.

FIG. 3 is an explanatory diagram of main parts of a second embodiment of the present invention. In this embodiment, as shown in FIG. 3, the depression operation of the accelerator pedal 2 is transmitted to the actuator 4 via a link mechanism. The step motor 19 receives a wireless signal from a wireless transmitter (not shown) that controls the lever 19A so that the link rod 17A and the link rod moving arm 18 are in the position shown in FIG. If not, the step motor 19 will not operate the lever 1 because the unlock operation signal will not be input.
Rotate 9A in the direction of arrow p. Therefore, the link rod moving arm 18 moves in the direction of arrow q.

FIG. 4 shows a partial perspective view of each part within the dash-dotted line circle B shown in FIG. In this figure, the link rod moving arm 18 moves in the direction of the arrow q as described above, the link rod 17A moves in the direction of the arrow r, and the roller 17B is removed from the link 17C. That is, in FIG. 3, even if the accelerator pedal 2 is operated, the actuator 4 does not operate, and the engine (not shown) maintains an idling state.

FIG. 5 shows a block diagram of a third embodiment of the present invention.
In this embodiment, as shown in FIG. 5, the amount of depression of the accelerator pedal 2 is detected by an accelerator opening sensor 22 and input to the microprocessor IO. The microprocessor 10 controls the fuel injection device 5 by means of the step motor 7 in accordance with a program previously stored in the memory 13, so that the rotational speed of the engine 1 is set to a required value.

In this embodiment, when the wireless receiving section 16 does not receive a wireless signal, the microprocessor 10 invalidates the input signal from the accelerator opening sensor 22 according to the program, and maintains the engine in an idling state. Therefore, even if the accelerator pedal 2 is depressed, the engine is kept in an idling state.

When the driver returns to the driver's seat and wants to start driving the car immediately, the wireless transmitter 15 transmits a predetermined wireless signal and the car is unlocked and can be started.

In the third embodiment as well, when driving the automobile normally, the key 32 shown in FIG. 5 is inserted into the key switch 33.

FIG. 6 shows a block diagram of a fourth embodiment of the present invention.

In this embodiment, as shown in FIG. 6, when the driver depresses the accelerator pedal 2, the amount of depressing is directly transmitted to the fuel injection device 5 via the accelerator cable 3.

That is, in FIG. 7, which is a partial explanatory diagram of the fuel injection device of this embodiment, the terminal portion 3A of the accelerator cable is connected to the terminal portion 3A of the fuel injection device 5 by pulling the lever 5A of the fuel injection device 5 in the direction of the arrow S against the spring 5B. A car is driven by controlling the rotational speed of the engine.

In FIG. 6, in this embodiment, when the unlocking operation signal is not input to the step motor 8, as in the first embodiment,
Bush rod 8A does not extend.

Therefore, the lever 9A descends as shown by the broken line and relaxes the accelerator cable 3, so that a third party who has entered the driver's cab cannot move the automobile.

In this case, the microprocessor 10 detects the rotation speed of the engine 1 in an idling state using the rotation sensor 6,
The step motor 7 is driven according to the program stored in the memo January 3 in advance.

In FIG. 7, when the force in the direction of the arrow S is not activated, the lever 5A is pulled in the direction of the arrow t by the spring 5B, but as mentioned above, the step motor 7 moves the bracket l-7A in the direction of the arrow U. Drive to. Therefore, the lever 5A moves as indicated by the arrow (■), so that the fuel injection device (not shown) is controlled to maintain a proper idling state. The gap of dimension α provided on the bracket 1-7A is the lever 5A between the tensioned state and the relaxed state of the accelerator cable.
It is intended to absorb the play of

In this embodiment, when the driver performs normal driving, the driver inserts the terminal 15A of the wireless transmitter 15 into the adapter 35 provided on the instrument panel 34, as shown in FIG. Since the charging current C is always inputted to the adapter 35 from the vehicle power source, the wireless transmitter 15 always sends out a wireless signal to maintain the unlocked state, and the step motor 8 tensions the accelerator cable 3 so that the accelerator pedal 2 The fuel injection device 5 is directly controlled by the amount of depression, and the automobile is driven.

〔Effect of the invention〕

As explained above, according to the present invention, an anti-theft device for an automobile can be realized in which the automobile will not be moved by a third party even if the driver of the idling automobile leaves the driver's seat. .

The device of the present invention is highly effective when applied to large vehicles that require time to warm up, construction vehicles that perform work with their engines running, fire trucks, and the like.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention. FIG. 2 is an explanatory diagram of the operation of the part within circle A in FIG. FIG. 3 is an explanatory diagram of the main parts of the second embodiment of the present invention. FIG. 4 is a partial perspective view of circle B in FIG. 3. FIG. 5 is a block diagram of a third embodiment of the present invention. FIG. 6 is a block diagram of a fourth embodiment of the present invention. FIG. 7 is a partial explanatory diagram of a fuel injection device according to a fourth embodiment. ■...Engine, 2...Accelerator pedal, 3...
Accelerator cable, 3A...terminal part, 4...actuator, 5...fuel injection device, 5A, 9A, 19A
...Lever, 5B...Spring, 6...Rotation sensor,
7.8.19...Step motor, 7A...Bracket, 8A...Bushion rod, lO...Microprocessor, 11.12A, 12B...Interface, 13...Memory, 14... switch circuit, 15
...Radio transmitter, 15A...Terminal, 16...Radio receiver, 17A...Link rod, 17B...Roller, 1
7C...Link, 18...Link rod moving arm, 22.
...Accelerator opening sensor, 31...Unlocking relay, 32
...Key, 33...Key switch, 34...Instrument panel, 35...Adapter, A, B...
Circle, a...Unlocking, command signal, b...Unlocking operation signal,
c...Charging current, 1)% Q% rs 9% L,,
us'/...Arrow, α...Dimension of gap. Patent Applicant Hino Motors Co., Ltd. Representative Patent Attorney Nao Takashi Ide Block configuration diagram of the first embodiment yf-)i Figure 11 Figure 11 Explanation of the acute part of the infantile part of the second embodiment fPl l', 3 Partial perspective view of circle BP''l in Fig. 3 IT-A +ml 3rd implementation side block 4-member composition also 5 b 4th implementation 91 partial explanatory diagram Mouse 7 En

Claims (3)

[Claims] (1) A wireless transmitter that is portable and transmits a wireless signal modulated with a specific code, and which becomes unlocked when the wireless signal modulated with the specific code is received. In an automobile anti-theft device equipped with a wireless key that includes a wireless key that becomes locked when a wireless signal is not received, in the locked state, the engine rotational speed remains at the idling state even if the accelerator is operated. An anti-theft device for an automobile, characterized in that it has a structure that allows it to be held in place. (2) Claim No. (1) in which the wireless signal is an electromagnetic wave
Anti-theft devices for automobiles as described in Section 1. (3) Claim No. (1) in which the wireless signal is an ultrasonic wave
Anti-theft devices for automobiles as described in Section 1.