JP2597173B2 - Vehicle anti-theft device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] <Industrial Application Field> The present invention relates to a vehicle theft prevention device, and more particularly to a vehicle theft prevention device of a type that uses both mechanical key collation and electronic code collation. About.

<Prior art> Conventionally, a steering lock that also serves as an ignition switch is used in combination with a mechanical key switch that uses a mechanical cylinder lock, and a unique mechanical key provided for the switch is provided for each vehicle. Using the electronic code transmitter, the receiver provided on the vehicle side, and the electronic code verification device, the engine can be started only when the key crest of the mechanical key and the electronic code match together. The anti-theft device for vehicles that
-210555. In this anti-theft device, when the key shank of the mechanical key having the transmitter is inserted into the steering lock and rotated to a predetermined position (for example, just before driving the starter), the key-side transmitter is switched to the vehicle-side receiver. , A unique electronic code is automatically transmitted.

According to such an anti-theft device, the engine cannot be started only by rotating the key cylinder by copying or picking the mechanical key,
Although theft of the vehicle is relatively reliably prevented, if the transmitter becomes unusable due to a failure or the like, the vehicle cannot be operated until repaired or newly prepared. Japanese Patent Application No. 62-210554 proposes that a keyboard for inputting, for example, a personal identification number be installed on the vehicle side in order to manually input the electronic code.

However, it is difficult to confirm whether an electronic code has been actually input from the keyboard to the code collating device, or whether the transmitter or the keyboard has input the electronic code to the code collating device. There was a problem with sex.

<Problems to be Solved by the Invention> In view of such problems of the related art, a main object of the present invention is to provide a vehicle theft prevention device with improved operability.

[Constitution of the Invention] <Means for Solving the Problems> According to the present invention, there is provided a mechanical key collating unit, an electronic code input unit, and an electronic code input from the unit. A vehicle anti-theft device that can start the engine when the verification results of both verification units match, wherein the electronic code input unit is stored in an external transmitter. External code input means for inputting an electronic code to the code matching means,
An internal code input means provided on the vehicle side for manually inputting an electronic code to the code collating means; and informing an operator that an electronic code has been input from the internal code input means to the code collating means. Vehicle anti-theft device having indicator means for closing, or a means for checking a mechanical key, an input means for an electronic code, and a means for checking the electronic code input from the means A vehicle anti-theft device that enables the engine to be started when the collation results of both collation means match, wherein the electronic code input means is provided on the vehicle side,
And internal code input means for manually inputting an electronic code to the code collating means, and indicator means for notifying an operator that an electronic code has been input to the code collating means from the internal code input means. This is achieved by providing a vehicle anti-theft device characterized by the above-mentioned features.

<Operation> In this way, the operator can easily confirm that the electronic code has been input to the code collating means from the internal input means.

Embodiments Hereinafter, the present invention will be described in detail with reference to the accompanying drawings with reference to specific embodiments.

FIG. 1 shows a vehicle antitheft device according to the present invention. This device controls a key switch unit 2 serving as a steering lock and an ignition switch provided on a steering column or the like on a body 1 side of a vehicle, and controls the starting of an engine, the operation of an alarm device, the operation of an on-vehicle device, and the like described later. A control device 3 to be inserted, a keyboard 4 connected to the control device 3 and provided in the vehicle interior of the vehicle body 1, and a key switch 2a provided in the key switch unit 2.
A key device 5 for rotating the engine so that the engine can be started.

The key device 5 includes a mechanical key unit 6 and a grip unit 7, and a transmitter 8 is built in the grip unit 7.
A pair of light emitting elements 9 made up of LED elements connected to the transmitter 8 has a pair of light emitting elements 9 at the opposing portions of the mechanical key section 6 within the grip section 7 with the base end of the mechanical key section 6 interposed therebetween. Are provided in the direction of the tip. Further, a pair of contacts 10 connected to the transmitter 8 is provided at an edge near the base end of the mechanical key portion 6.

The key switch 2a provided on the key switch unit 2 on the vehicle body 1 side is a well-known cylinder lock type, in which a mechanical key portion 6 can be inserted, and inside the key switch 2a in accordance with the turning position of the key device 5. Mechanical contacts to close,
Similarly, a pair of corresponding contacts 11 that can contact the above-mentioned contact 10 according to the turning position of the key device 5 are provided. The key switch unit 2 includes a light receiving element 12 composed of a phototransistor facing one light emitting element 9 of the mechanical key unit 6 inserted into the key switch 2a.
Is provided. Corresponding contact 11 and light receiving element 12
Is connected to the control device 3 described above.

The control device 3 includes a starter 15 connected to the on-vehicle battery 13 for starting the engine of the vehicle, an engine control device 16, an on-vehicle device control device 17 for controlling each on-vehicle device, and an alarm device 18. They are connected so that they can be controlled. Further, as described above, the control device 3
Is connected to a keyboard 4 provided with numeric keys. On the same surface of the keyboard 4 as the numeric keys, an indicator lamp 14 is provided integrally with the board.

The mechanical key of this embodiment matches the key ridge of the mechanical key portion 6 with a tumbler (not shown) corresponding to the key switch 2a, and slides the key cylinder of the switch to enable the key key to be collated. In practice, the mechanical key may be collated by directly electrically detecting the position of the tumbler.

FIG. 2 is a block diagram of the vehicle antitheft device shown in FIG.

A CPU 20 is provided in the control device 3 and a starter 15 is provided.
, An engine control device 16, an in-vehicle device control device 17 for controlling each in-vehicle device, and an alarm device 18 can be selectively operated. In addition, the CPU 20 includes a key device 5.
The unique electronic code signal composed of infrared rays from the light emitting element 9 is received by the light receiving element 12 and is converted into an electric signal to be used by the CPU.
Is connected to a light receiving circuit 21 for inputting the signal. In addition, CPU20
Is connected to an input circuit 22 for selectively inputting a unique electronic code signal from an output circuit 23 of the keyboard 4 to the CPU. The input circuit 22 is also connected to the indicator lamp 14 to turn on and off the lamp when the unique electronic code signal can be input from the keyboard 4 and when the unique electronic code signal is actually input from the keyboard 4. It has become.

Next, the operation of the above-described vehicle theft prevention device will be described in detail.

First, the mechanical key unit 6 is inserted into the key switch 2a, rotated to a predetermined position (for example, from the “LOCK” position to the “ON” position), and the contact 10 and the corresponding contact 11 are brought into contact with each other. 6 is detected, and at the same time, the infrared unique electronic code signal having a unique electronic code set for each vehicle is transmitted from the transmitter 8 via the light emitting element 9 to the light receiving element by the contact of both contacts 10 and 11 as a trigger. Send to 12. This signal is received by the light receiving element 12, the unique electronic code is transmitted to the CPU 20 via the light receiving circuit 21, and the CPU 20 checks the code. And
If the matching result matches, the starter 15, the engine control device 16, and the in-vehicle device control device 17 can be operated,
At the same time, an operation prohibition command is output to the alarm device 18. At this time, when the unique electronic code signal is input from the key device 5 to the CPU 20, the CPU 20 instructs the input circuit 22 to not receive the input of the unique electronic code signal by the password from the keyboard 4 and to display the indicator lamp. 14 is not turned on.

When the key switch 2a is rotated to a predetermined position together with the key device 5, the engine is actually started. Since then
Until the engine stops, the vehicle can be operated in a normal operation or the like. When the operation prohibition command is not output from the CPU 20 to the alarm device 18, the normal alarm device 18 can generate an alarm.

On the other hand, if the unique electronic code signal is not input to the CPU 20 due to, for example, a failure on the key device 5 side, or if the unique electronic code does not match, the CPU 20 turns on the indicator lamp 14 and turns on the unique electronic code from the keyboard 4. Inform the driver that the code signal will be accepted. Then, the driver inputs a personal identification number, and a unique electronic code signal is input from the keyboard 4 to the CPU 20, and the verification is performed. At this time, the indicator lamp 14 blinks, for example, to notify the driver that the CPU 20 has received the signal. The CPU 20 enables the engine to be started when the unique electronic code from the keyboard 4 matches. Here, after inserting the mechanical key portion 6 into the key switch 2a and rotating it, and bringing both contacts 10 and 11 into contact with each other, a password must be input to the keyboard 4 within a predetermined time, which may be 30 seconds. For example, the CPU 20 does not accept the input of the unique electronic code based on the password from the keyboard 4 and does not light the indicator lamp 14. If a wrong number is input to the keyboard 4 a predetermined number of times, for example, three times, the CPU 20 does not accept the input of the unique electronic code signal by the password from the keyboard 4 until a predetermined time elapses. In addition, the indicator lamp 14 is not turned on.

Here, if the unique electronic code from the keyboard 4 based on the personal identification number does not match, the starter 15, the engine control device 16, and the on-vehicle device control device 17 are disabled, and at the same time, the alarm device 18 is activated. Leave as possible. At this time, when the key switch 2a is turned to start the engine, the alarm device 18 drives a horn and headlights (not shown) according to a command from the CPU 20 to generate an alarm.

It is needless to say that the present invention is not limited to the above-described embodiment, and various applications are possible. For example, the vehicle owner may be able to register a password input from a keyboard. Further, as an auxiliary transmitting means on the transmitter 8 side, a push button switch is provided on the surface of the grip portion 7 of the key device 5, and when the switch is turned on, a unique electronic code signal is transmitted to the light receiving element 12. A structure may be provided. Further, in the present embodiment, the personal identification number is input from the keyboard. However, as an internal manual input means, for example, a personal identification code can be input by voice recognition.

[Effects of the Invention] As described above, according to the present invention, the operator can easily confirm that an electronic code has been input to the code collating means from the internal manual input means, and the operability is improved, thereby improving the effect. Is great.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a state in which a mechanical key portion of a key device of a vehicle antitheft device according to the present invention is inserted into a key switch. FIG. 2 is a block diagram showing the internal configuration of the control device, keyboard and key device of FIG. DESCRIPTION OF SYMBOLS 1 ... Vehicle body, 2 ... Key switch unit 2a ... Key switch, 3 ... Control device 4 ... Keyboard, 5 ... Key device 6 ... Mechanical key part, 7 ... Grip part 8 ... Transmitter 9 Light emitting element 10 Contact 11 Contact corresponding 12 Light receiving element 13 On-board battery 14 Indicator lamp 15 Starter 16 Engine control unit 17 On-board equipment control unit 18 Alarm device, 20 CPU 21 Light receiving circuit, 22 Input circuit 23 Output circuit

Claims (4)

(57) [Claims] 1. A system comprising: a mechanical key collating means; an electronic code input means; and a collating means for collating an electronic code inputted from the mechanical key. A vehicle anti-theft device capable of starting an engine, wherein the electronic code input means is provided on the vehicle side, and external code input means for inputting an electronic code stored in an external transmitter to the code collation means. Internal code input means for manually inputting an electronic code to the code collating means, and indicator means for notifying an operator that an electronic code has been input to the code collating means from the internal code input means. An anti-theft device for a vehicle, comprising: And means for collating the mechanical key, means for inputting the electronic code, and means for collating the electronic code input from the means. A vehicle anti-theft device capable of starting an engine, wherein the electronic code input means is provided on a vehicle side, and comprises an internal code input means for manually inputting an electronic code to the code collating means; A vehicle anti-theft device comprising indicator means for notifying an operator that an electronic code has been input from said internal code input means to said code matching means. 3. The vehicle antitheft device according to claim 1, wherein said internal code input means comprises keyboard input means for manually inputting a personal identification number. 4. The vehicle anti-theft device according to claim 1, wherein said indicator means is provided integrally with said internal code input means.