JPH07156753A - Vehicle antitheft device - Google Patents

Abstract

PURPOSE:To surely prevent the theft of a vehicle, and realize the delivery work by stopping the vehicle without stopping the engine. CONSTITUTION:An ignition switch 20 provided with an operational position'ON II' when a vehicle is stoped where the engine is kept in the prescribed operational condition, and the ignition key can be drawn, and a detector 22 to detect that the engine speed exceeds the prescribed value are provided in a vehicle antitheft device where the ignition key can be inserted/removed and the ignition switch to control the engine of the vehicle to the travelable condition or stopped condition according to the position of the inserted ignition key is provided. A misfire circuit 24 to make the engine in the misfire condition when the ignition switch 20 is in the position 'ON II' when the vehicle is stopped, and it is detected from the output of the detector 22 that the engine speed exceeds the prescribed value, and misfire alarm means 26, 28 to alarm a horn 30 of the vehicle when it is in the misfire condition are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle antitheft device suitable for use in a delivery vehicle such as a two-wheeled vehicle, a three-wheeled vehicle, a four-wheeled vehicle, etc., which employs a centrifugal clutch.

[0002]

2. Description of the Related Art A two-wheeled vehicle for delivery may be used to transport and deliver articles (documents and products in a bag). When delivering goods to each delivery destination by this type of delivery vehicle, the delivery person usually stops at each delivery destination and places the article at a predetermined place away from the vehicle, or Are handed over to the recipient.

Here, in the vehicle generally used for the delivery, an ignition key is inserted into an ignition switch, and the operable state or the stopped state is controlled by operating the key. FIG. 3 shows a conventional circuit example in which the engine ignition circuit 12 is controlled by the ignition switch 10. FIG. 3A shows the ignition switch 10, and the switch position corresponding to the key operation is O.
It is indicated by N and OFF. Further, FIG. 3B is a circuit diagram showing mainly the ignition switch 10 and the engine ignition circuit 12 described above.

In FIG. 3, the ignition switch 1
0 is a contact 10a for grounding the discharge terminal of the engine ignition circuit 12 in the OFF state and a contact 1 for connecting the output of the battery 14 to an electric load (light or the like) in the ON state.
It has 0b. The engine ignition circuit 12 is of a so-called CDI (Capasitive Discharge Ignition) system. This engine ignition circuit 1
In 2, the condenser charging coil 13a generates electric power by rotating a magneto (not shown), and the condenser 1
2a is charged. Further, the pulsar coil 13b outputs a pulse of an ignition signal to the thyristor 12b at the ignition timing. The ignition signal output from the pulsar coil 13b turns on the thyristor 12b to turn on the capacitor 1.
3b is connected in parallel to the ignition coil 13c.
Then, the charged electric charge is transferred to the ignition coil 13c.
Is discharged through the spark plug 15, spark is generated in the spark plug 15, and the air-fuel mixture in the combustion chamber burns. In the engine ignition circuit 12, reference numeral 12c is a discharge terminal for connecting the engine ignition circuit 12 to the ground when the engine is stopped, and 12d to
12g is a diode and 12h is a resistor.

In the circuit shown in FIG. 3, when the delivery person drives the vehicle, the ignition key is first inserted into the ignition switch 10 at the OFF position. This OF
At the F position, the ignition switch 10 is connected from the + (plus) terminal of the battery 14 through the fuse 16.
The terminal 18a of the path 18 leading to is open. Also,
The- (minus) terminal of the battery 14 is grounded, and the end of the path 20 reaching the ignition switch 10 is connected to the discharge terminal 12a of the engine ignition circuit 12 by the contact 10a. As a result, the engine ignition circuit 12 does not ignite even if the magneto rotates.

Then, in order to make the engine startable,
Twist the ignition key to the ON position. This ON
In the position, the output of the battery 14 is routed through the path 18 to the contact 10b of the ignition switch 10.
Is connected to an electric load and the discharge terminal 12a of the engine ignition circuit 12 is released, so that the engine can be ignited. When the delivery person kicks the starter pedal (or rotates the starter motor) to rotate the engine in the above state, the magneto rotates and the engine ignites and starts.

In a conventional two-wheeled vehicle, as shown in FIG. 4, a stand switch 4 for turning on / off the side stand for keeping the two-wheeled vehicle in a standing state when the vehicle is stopped and the side stand is turned on / off, and the transmission gear is neutral. There is a circuit provided with a neutral switch 5 that is turned on when the engine ignition circuit 12 is turned off, and the engine ignition circuit 12 is operated on condition that either one of the switches 4 and 5 is turned on. This circuit stops the ignition circuit 12 and causes the engine to misfire when the side stand is forgotten to be retracted when traveling and the gear is put into any gear from the neutral state. Prevent forgetting things and driving. Reference numeral 6 is a neutral lamp.

[0008]

Here, in the delivery of articles, the delivery person often stops without stopping the engine of the vehicle when leaving the vehicle. However, in that case the goods, including the vehicle, would be stolen,
There are many cases in which a passenger can get on the vehicle by mischief. Therefore, a delivery person who does not want to get stolen or mischievous stops the engine, removes the key (ignition key) from the key switch, and delivers the key after each one. It is necessary to perform the procedure of kicking and kicking and restarting the engine to move to the next delivery destination, but such a procedure is very time-consuming and hinders delivery work. There is. It should be noted that the circuit of FIG. 4 can run normally if only the stand is retracted, and is not useful for theft prevention.

The present invention has been made in order to solve the above-mentioned conventional problems, and can prevent vehicle theft and mischief without fail, and can deliver the vehicle without stopping the engine without stopping the engine. An object is to provide an anti-theft device.

[0010]

In order to achieve the above-mentioned object, the present invention has the following constitution. The invention according to claim 1 is a vehicle antitheft device in which an ignition key can be inserted and removed, and an ignition switch is provided for controlling the engine of the vehicle to a runnable state or a stopped state according to the position of the inserted ignition key. In the engine, the ignition switch (20) provided with an operation position (ONII) when the vehicle is stopped, which enables the engine to be maintained in a predetermined operating state and the ignition key can be removed, and the number of revolutions of the engine are equal to or greater than a predetermined number A detector that detects that (2
2) and that the ignition switch (20) is in the operation position (ONII) when the vehicle is stopped, and it is detected from the output of the detector (22) that the engine speed becomes equal to or higher than a predetermined speed. Occasionally, a misfire circuit (24) for putting the engine into a misfire state and a misfire warning means (26, 28) for sounding a horn (30) of the vehicle when the engine goes into a misfire state. The anti-theft device.

Further, according to the invention of claim 2, the ignition key can be inserted and removed, and an ignition switch for controlling the engine of the vehicle to a runnable state or a stopped state according to the position of the inserted ignition key is provided. In an anti-theft device for a vehicle, an ignition switch (34) provided with an operation position (ONII) when the vehicle is stopped and a stand that supports the vehicle when the vehicle is stopped can be retracted so that the engine can be maintained in a predetermined operating state and the ignition key can be removed. A stand switch (4) for detecting the state,
Neutral detection switch (5) for detecting the neutral state of the gear, and the ignition switch (34)
Means for enabling engine operation either with the stand retracted or with the gears in a neutral state when the engine is in the normal operating state operating position (ONI).
a) and the ignition switch (34) are in the operation position (ONII) when the vehicle is stopped, the connection with the stand switch (4) is disconnected, and the neutral detection switch (5) is not in the neutral state. Means (34b, 34) for misfiring the engine when is detected
An antitheft device for a vehicle, comprising:

Further, in the invention of claim 3, the ignition key can be inserted and removed, and an ignition switch for controlling the engine of the vehicle to a runnable state or a stopped state according to the position of the inserted ignition key is provided. In an anti-theft device for a vehicle, an ignition switch (20) provided with an operation position (ONII) when the vehicle is stopped, which enables the engine to be kept in a predetermined operating state and allows the ignition key to come off, and an engine speed of a predetermined rotation. The number of detectors (22) for detecting that the number of engine has exceeded the limit and the ignition switch (20) are in the operating position (ONII) when the vehicle is stopped, and the engine speed is determined from the output of the detector (22). When it is detected that the engine speed has exceeded a predetermined number of revolutions, the misfire circuit (24) for putting the engine into the misfire state, and when the vehicle is stopped The stand switch (4) that detects the retracted state of the stand that supports the vehicle, the neutral detection switch (5) that detects the neutral state of the gear, and the ignition switch (34) are in the normal operating state operation position (ONI). At this time, means (4b, 20) for enabling engine operation either with the stand retracted or with the gears in neutral
e) and when the ignition switch (34) is in the operating position (ONII) when the vehicle is stopped, the stand switch (4) is disconnected and the neutral detection switch detects that the neutral state is not established. Means (5b, 34) for causing the engine to misfire, and means (5) for sounding the horn (30) when a non-neutral state is detected by the neutral detection switch (5).
b) An antitheft device for a vehicle, comprising:

[0013]

According to the first aspect of the present invention, the ignition switch (20) is provided with an operating position (ONII) when the vehicle is stopped so that the engine can be maintained in a predetermined operating state (for example, an idle operating state) and the ignition key can be removed. Since it is provided, the driver of the vehicle such as a deliveryman operates the ignition key to bring it to this operation position (ONII), remove the ignition key and leave the vehicle while keeping the vehicle in a predetermined operating state. Can be delivered etc. In this state, a person who tries to steal the vehicle pushes the ignition key with the ignition switch (2
0) without opening the accelerator and trying to start the vehicle, the engine rotates at a predetermined speed or more, and the detector (22) detects that this speed has been reached, and the detector (22) ) Due to the output, the misfire circuit (24) puts the engine into a misfire state, so that the vehicle cannot escape.
Moreover, since the vehicle has the misfire warning means (26, 28) that sounds the horn (30) of the vehicle when the engine is in a misfire state, the driver or a person around the vehicle is likely to steal the vehicle. You can get to know the matter quickly, and you can warn those who try to steal.

According to the first aspect of the present invention, the engine is not stopped in relation to the gear change. Therefore, when the vehicle is equipped with an automatic centrifugal clutch, any gear such as neutral, first speed, second speed, etc. If the engine speed exceeds a predetermined number of revolutions, the engine will misfire, and conversely, at any gear, unless the engine speed exceeds the predetermined number of revolutions, the engine will not misfire and will not stop. Therefore, for example, even if the driver of the vehicle leaves the vehicle once with the gear in the 1st speed, the vehicle will start immediately as long as the ignition key is inserted into the ignition switch (20) and operated to the normal operation position. Can be made. Therefore, it is very easy to use.

According to the invention of claim 2, when the ignition switch (34) is in the normal operating state operating position (ONI), the engine is operated either in the retracted state of the stand or in the neutral state. And the ignition switch (34)
When the vehicle is in the operating position when the vehicle is stopped (ONII), it has means for disconnecting the stand switch (4) and causing the engine to misfire when the neutral detection switch (5) detects a non-neutral state. , The ignition switch (34) to the operating position (ONI
When set to I), the driver of the vehicle can leave the vehicle with the ignition key removed. At the same time, in this state, when the gear is set to the first speed or the second speed, the neutral detection switch (5) opens and the ignition circuit (1
2) does not ignite and misfires. Therefore, if a person trying to steal the vehicle enters the gear in order to start the vehicle, the ignition circuit (12) is stopped and the engine misfires.
Further, since the connection with the stand switch (4) is cut off, even if the stand switch (4) is retracted, misfire will occur if the gear is put in. Therefore, the vehicle cannot be stolen. Further, the invention of claim 3 can obtain the function and effect of the inventions of claims 1 and 2, and can ring the horn when not in neutral.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a circuit diagram of a vehicle anti-theft device according to the first embodiment, which includes an ignition switch 20.
An engine ignition circuit 12, an engine speed detection circuit (detector) 22, a misfire circuit 24, and an alarm drive circuit 2
6 and a relay 28 (corresponding to a misfire warning means). In FIG. 1, the same components as those of the circuit of FIG. 3 are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 1, the ignition switch 20 includes a contact 10a and an "O" shown in FIG. 3 in which the operation position of the ignition switch 10 is "OFF".
It has an “N” contact point 10b, an “OFF” contact point 20a and an “ONI” contact point 20b having the same function, respectively, and makes it possible to maintain the engine in an idle operation state and remove the ignition key.
II "is provided, and the contact point 20c having the same function as the contact point 20b at the operating position and the ground path are connected to the engine speed detection circuit 2
The contact 20d connected to the path a from 2 is provided. At the operation position "ONII", the terminal 12c on the side of the capacitor charging coil 13a is not grounded.

The engine speed detection circuit 22 detects that the engine speed has exceeded a predetermined idle speed, and for example, the pulsar coil 13 is used.
The number of output pulses of b is counted or the engine speed is detected by the output of the engine speed detection sensor, and it is detected that the detected engine speed is equal to or higher than a predetermined speed.

The misfire circuit 24 is in the operating position "ONII" when the ignition switch 20 is stopped, and the engine speed is equal to or higher than a predetermined speed (a predetermined idle ring speed, for example, 2000 rpm). When it is detected that the engine speed has reached the engine speed, the engine is put into a misfire state. In the embodiment, the misfire circuit 24 has a misfire control thyristor 24a connected in parallel to the capacitor charging coil 13a and an engine speed detection circuit 22, and when the engine speed is equal to or higher than a predetermined speed,
An ON signal is input from the engine speed detection circuit 22 to the gate of the misfire control thyristor 24a, and
The rotation speed detection circuit 22 has a function of connecting the output terminal of the pulsar coil 13b to the path a that is connected to the ground by the contact 20d of the ignition switch 20 (engine ignition circuit 1
The second thyristor 12b is turned off so that the engine is not ignited.

The alarm drive circuit 26 includes the rotation detector 2
It is composed of, for example, a transistor that operates the relay 28 by the output of 2 and sounds the horn 30. The horn 30 can be manually turned on by a switch 32.

The operation of the first embodiment will be described. First, the vehicle of the embodiment uses articles for delivery, but in order for the delivery person to start the vehicle from a state where the engine is stopped, the ignition key is inserted into the ignition switch 20 and twisted to set the operation position of the ignition switch 20 to " ON
I ". Then kick the starter pedal to start the engine. After that, change gears and open the accelerator to drive to the intended delivery destination.

When the vehicle arrives at the delivery destination, it is necessary to stop the vehicle and put the article in a predetermined place or hand it to a person to receive it. At that time, the ignition switch 20 is operated to change its operating position. Set to "ONII". At this operating position, the delivery person pulls out the ignition key and leaves the vehicle to put the article in a predetermined place or hand it to the recipient. In the "ONII" operating position, as shown in FIG. 1, the terminal 12a of the ignition circuit 12 is not grounded, so the ignition circuit 12 operates and the engine is in a idling operation state at a predetermined rotation speed.

In this state, if a person who tries to steal the vehicle tries to start the vehicle by opening the accelerator without inserting the ignition key into the ignition switch 20, the engine will rotate at a predetermined speed or more. The detector 22 detects that the rotation speed has been reached.
Then, the detector 22 connects the output of the pulser coil 13b to the terminal a. Since this terminal is connected to the ground by the contact 20d, the output of the pulser coil 13b is discharged to the ground and the gate input of the thyristor 12b of the ignition circuit 12 is lost, so that the ignition current does not flow to the spark plug 15. Further, since the detector 22 provides a gate signal to the thyristor 24a of the misfire circuit 24a, the thyristor 24a
Since a is turned on and the output side of the capacitor charging coil 13a is short-circuited, the charging current does not flow in the capacitor 12a.

As described above, the misfire circuit 24 puts the engine in the misfire state. Therefore, when the accelerator is opened, the engine goes into the misfire state and the vehicle does not start, so that the vehicle cannot run. Moreover, when the engine becomes misfired, the alarm drive circuit 26 activates the relay 28 to ring the horn 30 of the vehicle, so that a driver of the vehicle or a person in the vicinity of the vehicle is likely to steal the vehicle. You can quickly know that you have become, and can also warn the person trying to steal. In order to restart the vehicle, the delivery person can start the vehicle by opening the accelerator of the engine by inserting the ignition key into the ignition switch 20 and twisting it to the "ONI" position.

Next, a second embodiment will be described with reference to FIG. In FIG. 2, the same parts as those shown in FIG. 4 are designated by the same reference numerals. In the second embodiment, as shown in FIG. 2, an ignition switch 34 provided with an operation position "ONII" when the vehicle is stopped, a stand switch 14 that detects a retracted state of a stand that supports the vehicle when the vehicle is stopped, and a gear A neutral detection switch 15 for detecting a neutral state is provided, and the ignition switch 34 is provided in a state where the stand is retracted or in a neutral state when the ignition switch 34 is in a normal operation state operation position "ONI". When the engine can be operated by either of them and the ignition switch 34 is in the operation position "ONII" when the vehicle is stopped, the connection with the stand switch 14 is cut off, and the neutral detection switch 5 detects a non-neutral state. Is configured to misfire the engine when done.

One end of the stand switch 14 is connected to the terminal of the ignition switch 34 instead of being grounded. The ignition switch 34 has a contact 10b for connecting the + side of the battery 14 to an electric load, and a contact 34a for connecting the stand switch 4 to the ground, in the operating position "ONI" in the normal operating state. Further, when it is in the operation position "ONII" when the vehicle is stopped, the terminal connected to the stand switch 4 is opened, and it has a contact 34b for making the same connection as the contact 10b. .

Therefore, according to the second embodiment, when the ignition switch 34 is at the operating position when the vehicle is stopped, the driver of the vehicle can leave the vehicle with the ignition key removed. At the same time, when the gear is set to the first speed, the second speed or the like in this state, the neutral switch 15 opens, and the ignition circuit 12 does not ignite and misfires. For this reason, if a person trying to steal the vehicle enters the gear to start the vehicle, the ignition circuit 12 is stopped and the engine misfires, so the vehicle cannot be stolen.

Although the second embodiment implements the invention of claim 2, whether the gear is inserted or the stand is retracted as in the third embodiment in which the portion shown by the broken line in FIG. 1 is added. Alternatively, the engine can be made to misfire when the engine speed is increased. Further, in the third embodiment of FIG. 1, the first
In addition to the embodiment, the neutral switch 5 has contacts 5b,
5b (normal cross contact), and a contact 4b (normal cross contact) is added to the stand switch 4 as shown by the broken line in FIG. In other words, if the stand is not retracted when the vehicle is in the operating position ONI, the vehicle may misfire due to misfire, and the operating position is ON when the vehicle is stopped.
In case of II, the horn can be made to sound when the gear is put in and is no longer in neutral.

Although the present invention is suitable for use in a delivery vehicle for articles, the scope of the present invention is not limited to this, and can be used as an ordinary vehicle antitheft device. It is possible.

[0030]

As described above, according to the inventions of claims 1 and 2, the vehicle can be reliably prevented from being stolen or mischief, and the vehicle can be delivered without stopping the engine. According to the first aspect of the present invention, the engine is not stopped due to the gear change. Therefore, when the vehicle is equipped with an automatic centrifugal clutch, which gear stage such as neutral, first speed, second speed, etc. In the above, the engine misfires when the engine speed exceeds the predetermined speed, and conversely, the engine does not misfire and does not stop unless the engine speed exceeds the predetermined speed at any gear. Therefore, for example, even if the driver of the vehicle leaves the vehicle once with the gear in the 1st speed, the vehicle can start the vehicle immediately by inserting the ignition key into the ignition switch 20 and operating the ignition key to bring it to the normal operation position. You can Therefore, it is very easy to use.
Also, if the vehicle is about to be stolen, the horn will turn on, so that the driver or someone in the vicinity of the vehicle can quickly know that the vehicle is about to be stolen, and the person trying to steal the vehicle. Can be warned against. In addition, the invention of claim 3 can obtain the effects of the inventions of claim 1 and claim 2, and can ring the horn when not in neutral.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an engine ignition circuit provided with a vehicle antitheft device according to first and third embodiments of the present invention.

FIG. 2 is a circuit diagram of an engine ignition circuit provided with a vehicle antitheft device according to a second embodiment of the present invention.

FIG. 3 is a circuit diagram of a conventional engine ignition circuit.

FIG. 4 is a circuit diagram of another example of a conventional engine ignition circuit.

[Explanation of symbols]

 4 Stand switch 4b Stand switch contact 5 Neutral detection switch 5b Neutral detection switch contact 15 Spark plug 20,34 Ignition switch 22 Detector 24 Misfire circuit 30 Horn ONI Operating position when traveling ONII Operating position when vehicle is stopped

Claims (3)

[Claims] 1. An anti-theft device for a vehicle, wherein an ignition key can be inserted and removed, and an ignition switch is provided for controlling an engine of the vehicle to a runnable state or a stopped state according to a position of the inserted ignition key, An ignition switch (20) with an operating position (ONII) when the vehicle is stopped, which enables the engine to be kept in a predetermined operating state and the ignition key can be removed, and that the engine speed has exceeded a predetermined speed. The detector (22) for detecting and the ignition switch (20) are in the operating position (ONII) when the vehicle is stopped, and the detector (22)
When it is detected from the output that the engine speed exceeds a predetermined speed, a misfire circuit (24) for putting the engine into a misfire state and a horn (30) of the vehicle when the engine goes into a misfire state are provided. An antitheft device for a vehicle, comprising: a misfire alarm means (26, 28) for ringing. 2. An anti-theft device for a vehicle, wherein an ignition key is insertable / removable, and an ignition switch is provided for controlling an engine of the vehicle to a runnable state or a stopped state according to a position of the inserted ignition key, An ignition switch (34) with an operating position (ONII) when the vehicle is stopped so that the engine can be maintained in a predetermined operating state and the ignition key can be removed, and a stand switch that detects the retracted state of the stand that supports the vehicle when the vehicle is stopped (4), a neutral detection switch (5) for detecting the neutral state of the gear, and a state in which the stand is retracted or the gear is in the neutral state when the ignition switch (34) is in a normal operating state operation position (ONI). It is possible to operate the engine in any of the states When the ignition switch (34) and the ignition switch (34) are in the operating position (ONII) when the vehicle is stopped, the stand switch (4) is disconnected, and the neutral detection switch (5) is used for neutral. An antitheft device for a vehicle, comprising means (34b, 34) for causing an engine to misfire when it is detected that the vehicle is not in a state. 3. An anti-theft device for a vehicle, wherein an ignition key is insertable / removable, and an ignition switch is provided for controlling an engine of the vehicle to a runnable state or a stopped state according to a position of the inserted ignition key, An ignition switch (20) with an operating position (ONII) when the vehicle is stopped, which enables the engine to be kept in a predetermined operating state and the ignition key can be removed, and that the engine speed has exceeded a predetermined speed. The detector (22) for detecting and the ignition switch (20) are in the operating position (ONII) when the vehicle is stopped, and the detector (22)
When it is detected from the output that the engine speed exceeds a predetermined speed, a misfire circuit (24) for putting the engine into a misfire state and a horn (30) of the vehicle when the engine goes into a misfire state are provided. A misfire alarm means (26, 28) that sounds, a stand switch (4) that detects a retracted state of a stand that supports the vehicle when the vehicle is stopped, a neutral detection switch (5) that detects a neutral state of a gear, and the ignition switch ( 34) is a normal operating state operation position (ONI), means (4b, 20e) for enabling engine operation either with the stand retracted or with the gear in a neutral state; and the ignition switch (). 34) is in the operating position (ONII) when the vehicle is stopped, the contact with the stand switch (4) The means (5b, 34) for disconnecting the engine and causing the engine to misfire when it is detected that the neutral state is not in the neutral state, and the horn () when the neutral state is detected by the neutral state detection switch (5). 30) A means (5b) for ringing the vehicle, the antitheft device for the vehicle.