JPS63219452A - Antishift device for vehicle - Google Patents

Abstract

PURPOSE:To enhance antishift effect in a vehicle by previously registering and storing an arbitrary number of a set key operation, and enabling an engine starting with the aid of the operation of an engine starting key only when the same number as the registered number is inputted. CONSTITUTION:After a set key 4 is operated to be in such a state as to be changed over to the set position, a number inputting button 3 arranged on an operating panel is pressed so that arbitrary number is inputted, and then, the set key 4 is turned to the lock position so that the inputted number is transferred to registration memory in an one-chip microcomputer 1. In this way, in such a state that the arbitrary number is stored, thereafter, only when the same number as the stored number is inputted from the button 3, an electromagnetic switch 6 is turned on so as to light a start indicating lamp 7. And, in this state, the on-operation of an engine starting switch 10 drives a starter motor 8 so as to perform the starting of an engine.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a vehicle anti-theft device.

(Conventional wave f, I) An automobile engine can be easily started by turning on the engine start key. Therefore, if the car is parked or left unattended with the starting key attached, it is natural that the car will be stolen, and even if the starting key is not attached, it is impossible to start the engine with a duplicate key. is by no means difficult.

Of course, when parking the car, you should always remove the starting key and use a starting key that cannot be used with a duplicate key, but for a very large number of general vehicles, It is almost impossible to use special keys.

(Objective of the Present Invention) As described above, the above-mentioned problems exist in the engine starting key of an automobile, and the present invention is a technology developed for the purpose of solving these problems. In other words, the engine is configured so that it cannot be started by operating only the conventional start key, and the purpose is to prevent theft.

(Configuration of the Present Invention) In order to solve the above-mentioned problems, the vehicle anti-theft device according to the present invention is configured with the following features. In other words, the car engine does not start simply by pressing the start key;
Requires another input and provides the recitation number as the input.

Memorize the code number and before operating the start key above,
It is configured such that the operation of the start key becomes effective only by inputting the recited number. Therefore, the device has an operation panel arranged with buttons from O to 9 for inputting predetermined numbers (recited numbers), and a storage section for storing the input numbers. There is. A set key is provided on the operation panel, and at the set position, a certain code number is inputted from the button and turned to the lock position to be memorized, and the cent key is stored separately. After the code number has been input and memorized, the code number must be input before turning the start key, and the machine has a function to determine whether the input number matches the registration number or not. If the recited number is inappropriate, the user can re-register by pressing the set key again and inputting an appropriate number at the set position.

Embodiments of the anti-theft device according to the present invention will be described in detail below with reference to the drawings.

(Embodiment) FIG. 1 shows a flowchart of a program related to the anti-theft device. First, a set key is set in a key hole. In this case, the start indicator lamp is lit, and in this state, the user presses a button arranged on the operation panel to input a number that is easy to remember. By turning the set key to the lock position, the number stored in the temporary memory is transferred to the registration memory, and the start indicator lamp turns off. In this case, an appropriate registration number and the number of digits of the number are registered. If an appropriate number and number of digits are registered in the storage device in this way, the starter motor will be operated by the engine start switch only when the same number is input, and the input number will be the registration number. Only when the two match, the electromagnetic switch, which is a relay, closes (ON state), the start indicator lamp lights up, and the engine starts with the engine start key.

If the electromagnetic switch is in the (OFF) state, numbers are entered again from the input button and compared with the registration number, and the electromagnetic switch will not be in the (ON) state unless the numbers are entered until they match. If the electromagnetic switch is closed, the engine will start normally, but if you turn off the engine and move the start key to the OFF position or to the 〇〇 position, or even pull it out, the registration will be canceled and the registration will be made again when the engine is started. You must enter the number shown.

Figure 2 shows a wooden block Φ diagram, where ■ is a one-chip microcomputer, 2 is a stabilized Wt source,
3 is the numerical input button, 4 is the sensor key, 5 is the voltage converter, 6 is the electromagnetic switch (relay), 7 is the start indicator lamp, 8 is the starter motor, 9 is the battery, 10 is the engine start switch, 11 is the current An amplification transistor and 12 indicate a crystal oscillator for a one-chip microcomputer, respectively. Here, the one-chip microcontroller 1 has a total of 13 or more input ports: 10 for numerical input, 1 for the set key, and 2 for the engine start switch, and an electromagnetic switch 1 that is connected in series to the power supply of the starter motor. It has a total of two or more output ports, one for the engine and one for the start indicator lamp, and also has built-in ROM and RAM. Further, the stabilized power source 2 is a voltage regulator, and is used to extract power for the microcomputer from the car battery.

Number input buttons 3 have numbers 0 to 9 written on them, and are arranged in regular numerical order.

Set key 4 uses a select switch or a snap switch.

The voltage converter 5 is for converting a 12V signal to 5V, and a circuit as shown in FIG. 3 can be used.

8.9. The starter motor, battery, and engine start key of IO are installed in each vehicle, and are not components unique to the present invention.

Since the current amplifying transistor No. 11 cannot operate the electromagnetic switch No. 6 or the start indicator lamp No. 7, the current must be amplified by the transistor.

FIGS. 4a and 4b show the operation panel 13, and the panel 13 has input buttons 3 marked with numbers 0 to 9.
a, 3b, 3c, . . . are arranged, and a set key 4 is arranged on the same panel 13. Here, 1. The form of the input buttons 3a, 3b, 3c, etc. is not specified, and it is sufficient that a predetermined number can be input by pressing them, and the set key 4 has positions of SET and LOCK. Furthermore, a start indicator lamp 7 is attached to the upper part of the set key 4. A hole 15 is formed in the side surface 14 of the operation panel 13, and a current is drawn out from the chain hole 15 to be led to the engine starting key.

On the other hand, FIG. 5 shows an example of the layout of printed circuit board parts, and the printed circuit board 16 includes a one-chip microcomputer 1, a voltage regulator 2, an electromagnetic switch (relay) 6, a voltage converter 5, and a crystal oscillator 12. attached and connectors 17, 18 are located. The connector 17 is for connecting the input button 13 arranged on the operation panel 13 and the set key 4, and the connector 18 is for connecting an engine start key and a starter motor.

As described above, the anti-theft device according to the present invention is equipped with an input button and a set key for inputting certain numbers, and a storage device for storing the input numbers, and has the following effects. Obtainable.

(Effects) (1) By mounting the anti-theft device on a vehicle, theft of the vehicle can be almost completely prevented.

That is, the anti-theft device of the present invention memorizes its own number by operating a set key, and thereafter, only when the same number as the registered number is entered, the starter motor and engine are started by operating the engine start key. As long as the registration number is not known, the car will not be stolen.

(2) Furthermore, since the registration number of the device can be freely deleted by operating the set key and a new number can be registered, each driver can use an appropriate number.

(3) The anti-theft device according to the present invention is not affected by the car model;
The same device can be installed on any vehicle, making it versatile.

[Brief explanation of the drawing]

FIG. 1 is an example of a program chart configuring the device, FIG. 2 is a block diagram, and FIG.
The voltage converter used in Figure 5 is shown in Figure 4a,
b shows an operation panel, and FIG. 5 shows a printed circuit board component layout. l...One-chip microcomputer 2...Voltage regulator 3...Input button 4...Set key 5...Voltage converter 6...TI! Magnetic switch (relay) 7...
- Starting indicator lamp 8...Starter motor 9...Battery lO...Engine start key 11...Mll fluency width transistor 12...Crystal oscillator 13...Operation panel 14...・Side side 15...hole 16...printed circuit board 17.18...connector

Claims (1)

[Claims] In an engine starting device that operates a starter motor by operating an engine starting key, an operation panel is provided with an array of input buttons clearly marked with numbers 0 to 9, and the operation panel memorizes and registers the numbers input by the input buttons. The engine starter motor is characterized by having a storage section for the engine to operate, and a set key that is connected to and operated by the storage section, and configured such that the starter motor of the engine is operated by operating the engine start key only when the input number matches the registration number. Vehicle anti-theft device.