JPH07156752A - Vehicle anti-theft device - Google Patents

Abstract

(57) [Abstract] [Purpose] An inexpensive vehicle anti-theft device that does not require the production of an igniter decision circuit and a new ignition switch is provided. [Structure] In a vehicle anti-theft device, a coupler 12 that removably connects electric wiring from a vehicle body side to an ignition switch 10, and a stand switch that detects whether a side stand that supports a vehicle when it is stopped or is put in. 14, a neutral switch 16 for detecting that the gear is in neutral, and the stand switch 1
4 from the stand switch 14 to the operating condition circuit 18 when the neutral switch 16 detects that the side switch is on or when the neutral switch 16 detects that the gear is in neutral. 1 in the middle of the signal path 20 of No. 1, which is turned on when the ignition switch 10 is in a travelable state
0b and the coupler 12 were connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an ignition key that can be inserted and removed and is provided with an ignition switch for controlling an engine of a vehicle to a drivable state or a stopped state according to an operation position of the inserted ignition key. , Anti-theft devices for vehicles such as two-wheeled vehicles, three-wheeled vehicles and four-wheeled vehicles.

[0002]

2. Description of the Related Art In some cases, a two-wheeled delivery vehicle is used for transporting and delivering articles (documents and products in bandages). When delivering goods to each delivery destination with this type of delivery vehicle, the delivery person usually stops at the delivery destination one by one and puts the article at a predetermined location away from the vehicle or Are handed over to the recipient.

Here, in the case where the vehicle is delivering the goods, even when the delivery person leaves the vehicle, the engine of the vehicle is stopped, the ignition key is pulled out, and the vehicle is stopped.
It is conceivable that the goods, including the vehicle, may be stolen or the vehicle may be mischievously stolen. That is, in the case where the wiring path from the electrical equipment on the vehicle side to the ignition key is connected by a coupler so that it can be inserted and removed freely,
It is considered that the terminals of the coupler are connected to each other by a conductive wire or the like.

On the other hand, the following anti-theft circuit has been proposed. In other words, this anti-theft circuit puts a diode or resistor in the ignition switch, and when you turn the ignition switch with the ignition key, the signal via the diode or resistor is sent to the decision circuit in the igniter, and that decision circuit The engine is ignited by determining whether or not it has been stolen.

[0005]

However, in the anti-theft circuit described above, the cost for the decision circuit and the element with the built-in ignition switch increases, and the ignition switch must be newly manufactured. However, there is a problem in that the cost increases significantly and the cost increases significantly.

The present invention has been made in order to solve the above-mentioned conventional problems, and provides an antitheft device which is inexpensive and does not require a die cost, which does not require the production of an igniter decision circuit and a new ignition switch. The challenge is to provide.

[0007]

In order to solve the above-mentioned problems, the present invention has an ignition key that can be inserted and removed.
In an anti-theft device for a vehicle, which is provided with an ignition switch for controlling an engine of the vehicle to a drivable state or a stopped state according to an operation position of an inserted ignition key, an ignition switch (1
Coupler (12) for connecting the electrical wiring to (0) in a removable manner
And a stand switch (14) for detecting whether the side stand that supports the vehicle when it is stopped or put in,
A neutral switch (16) for detecting that the gear is in neutral, and when the stand switch (14) detects the state in which the side stand is turned on, or when the neutral switch (16) detects that the gear is in neutral. An operating condition circuit (18) for making the engine operable, and a signal path (2) from the stand switch (14) to the operating condition circuit (18).
In the middle of 0), there is provided a vehicle antitheft device characterized in that a contact (10b) which is turned on when the ignition switch (10) is in a traveling state and a coupler (12) are connected. The state in which the side stand is put out / put in means that the side stand is put out in a state capable of supporting the vehicle / stored in a state in which the vehicle can run.

[0008]

In the operating condition circuit, which is the premise of the present invention, the engine can be operated when the stand switch detects that the side stand is turned on or when the neutral switch detects that the gear is in neutral. An example is shown in FIG.

In the operating condition circuit 18 of FIG. 2, a side stand relay in which a contact 26a is connected in series to an igniter 22 via a kill switch 24 and both the stand switch 14 and the neutral switch 16 are connected to a coil 26b. 26 is provided and constitutes a side stand relay interlock circuit. This side stand relay 26 has a contact 26a and an actuation coil 26b, and when signals of the stand switch 14 and the neutral switch 16 are input to the actuation coil 26b and either of the switches 14 and 16 is turned on. / When both are OFF, contact 26a is ON / O
The power is sent to the igniter 22 via the kill switch 24 by turning on / off the FF.

That is, when either of the signals of the stand switch 14 and the neutral switch 16 is turned on /
If both are OFF, turn igniter 22 ON / O.
It is supposed to FF. Side stand relay 26
It is an interlock circuit. In FIG. 2, reference numeral 28 is a neutral lamp, and D is a diode for preventing the neutral lamp 28 from lighting by a stand switch.

However, in the circuit of FIG. 2, the power source side path (for example, indicated by reference numeral 30) is only interrupted by the insertion / removal of the coupler, and when the power source side path is connected in the coupler, the engine can be operated. May become. Therefore, in the present invention, as shown in FIGS. 3 (a) and 3 (b), for example, the ignition switch 10 is turned on in the midway of the signal path 20 from the stand switch 14 to the operating condition circuit 18 in the operable state. The contact 10b and the coupler 12 are connected. The signal path 20 is connected via the coupler 12 as shown in FIG.

As a result, even if the coupler is removed and the terminals are connected to each other to make a traveling state, at least 4
It is very difficult to find a suitable combination of two terminals out of one terminal, and that combination is very difficult to find. Even if only the power source side is directly connected, the side stand relay 26 is interlocked and cannot run. Therefore, it becomes difficult to move the vehicle without inserting the ignition key, and it is possible to reliably prevent theft.

[0013]

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 antitheft device according to the present invention. The same parts as those in FIG. 3 are designated by the same reference numerals.

As shown in FIG. 1, the antitheft device is
A coupler 12 that removably connects the electric wiring from the vehicle body side to the ignition switch 10, a stand switch 14 that detects whether the side stand that supports the vehicle when the vehicle is stopped, and a stand switch 14 that detects that the side stand is in a neutral state. A neutral switch 16 for detecting and a driving condition circuit 18 for making the engine operable when the stand switch 14 detects a state where the side stand is turned on or when the neutral switch 16 detects that the gear is in neutral. The contact point 10b, which is turned on when the ignition switch 10 is in an operable state, and the coupler 12 are connected in the middle of a signal path 20 from the stand switch 14 to the operating condition circuit 18.

The ignition switch 10 is a contact 10a for turning on / off a power line 36 from a battery 34.
(Connected to terminals R and O) turns signal path 20 ON / OF
And a contact 10b for F (connected to terminals A and B). Operation position of the ignition switch 10 (OFF,
ON, P) makes the contacts 10a, 10b OFF,
It turns on and off. In addition, in FIG. 1, P is a parking operation position.

The coupler 12 has a terminal 30 for connecting the power supply line 36 and a terminal 12a for connecting the signal path 20. When the coupler 12 is removed, the terminals 30, 1 are provided.
The power supply line 36 and the signal path 20 are separated from each other at the boundary 2a. The stand switch 14 has one end grounded through the diode D1 and the other end connected to the signal line 20.
Is connected to the coil 26b of the side stand relay 26 via the terminal 12a of the coupler 12.

The operation of the anti-theft device of the embodiment will be described.
If the ignition switch 10 is set to the ON position and the engine is started without removing the coupler 12, the stand switch 14 or the neutral switch 1
At least one of 6 must be turned on. This is because, when any of these is turned on, the side stand switch relay 26 operates to send power to the igniter 20 and the engine can be operated. In this state, step on the starter kick or start the cell starter to start the engine.

On the other hand, the coupler 12 is removed and its terminal 30,
Even if an attempt is made to connect the 12a to each other to create a runnable state, FIG.
As shown in FIG. 2, for example, a conductive wire 36 must connect terminals in proper two combinations out of at least four terminals, and it is very difficult to find the combination. Even if only the power supply side terminal 30 is directly connected, the interlock of the side stand relay 26 works and the vehicle cannot run. Therefore, it becomes difficult to move the vehicle without inserting the ignition key,
The anti-theft can be surely achieved. Needless to say, the present invention is not limited to the above-mentioned embodiment, and can be applied to a vehicle using an ignition switch or a coupler of a different form.

[0019]

As described above, according to the present invention, the determination circuit of the igniter is not required and the ignition switch with the element is not required. Therefore, it is not necessary to manufacture a new ignition switch, and the cost is low. It is possible to obtain an antitheft device for a vehicle that is inexpensive.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a vehicle antitheft device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram for explaining the present invention.

FIG. 3 is a circuit diagram of an example of the present invention.

FIG. 4 is an explanatory view of the operation of the above embodiment.

[Explanation of symbols] 10 ignition switch 10a, 10b Ignition switch contact 12 Coupler 14 Stand switch 16 Neutral switch 18 Operating condition circuit 20 Signal path

Claims (1)

[Claims] 1. 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 drivable state or a stopped state according to an operation position of the inserted ignition key, A coupler (12) for connecting and disconnecting electric wiring from the vehicle body side to the ignition switch (10), a stand switch (14) for detecting a state where a side stand that supports the vehicle when the vehicle is stopped / a state where the side stand is inserted, and a gear A neutral switch (16) for detecting that the vehicle is in neutral, and an engine when the stand switch (14) detects a state in which the side stand is turned on or when the neutral switch (16) detects that the gear is in neutral. Condition circuit (1
8) and the operating condition circuit (1) from the stand switch (14).
In the middle of the signal path (20) to 8), the contact (1) that is turned on in the operable state of the ignition switch (10).
0b) and the coupler (12) are connected to the vehicle antitheft device.