JP2002154407A - Antitheft device of industrial vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antitheft device for preventing easy engine start even when a robber gets a key to try to steal an industrial vehicle. SOLUTION: This antitheft device comprises an IC card or an ID tag with no power carried by a normal crew, a power supply of a vehicle, a receiving part having in a car room a power supply part having a timer having a contact point by installing or inserting the IC card or the ID tag, a fixed station disposed out of the car room that is connected to the power supply and communicates with the IC card or the ID tag, a first intermittent control part disposed on a minus side ground line of a starter motor and connected to the fixed station, and a second intermittent control part connected to the power supply part having the timer between the fixed station and the power supply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-theft device for an industrial vehicle, and more particularly to an anti-theft device provided in a starter motor.

[0002]

2. Description of the Related Art A conventional vehicle anti-theft device employs a structure in which a driving operation of a starter motor by a key switch equipped with an IC chip is controlled and an engine is not started. For example, as shown in FIG. 5, when the IC chip 60 is mounted on the key 54 and the key 54 is inserted into the key cylinder 61 of the instrument 29, an antenna 55 is provided near the ignition switch 56, and the antenna 55 and the IC chip A communication module 57 for performing communication with the communication module 60 is provided, and an immobilizer 58 for controlling whether or not the engine is started based on a command signal from the communication module 57 is provided. (See, for example, JP-A-8-108824)

This device allows the engine to be started only when the ID code transmitted from the IC chip 60 mounted on the key 54 matches the ID code stored in the system control circuit of the communication module 57. is there.

[0004]

However, the IC chip 60 is mounted on the engine key 54. When the engine key 54 is inserted into the key cylinder 61 and the key 54 is rotated, the power is turned on and the IC chip 60 is mounted. The transmission is for transmitting the communication module 57, and the engine key 54 is very important. If this unique key 54 is stolen, theft prevention of the vehicle cannot be avoided.

The present invention has been made in order to solve the above-mentioned problems. An engine key is kept as it is, and an IC card or an ID tag of an ID tag carried by a crew is attached. An anti-theft device for an industrial vehicle in which an engine is started by communicating with an ID tag in a non-contact manner is provided.

[0006]

In order to achieve the above object, an industrial vehicle anti-theft device according to the first aspect of the present invention provides a non-powered IC card or an I / O card carried by a regular crew member.
A D-tag, a vehicle power supply, a receiver provided with a power supply unit with a timer provided with a contact for mounting or inserting an IC card or an ID tag in the vehicle interior, and an IC card or ID tag connected to the power supply A fixed station provided outside the vehicle compartment for communication with the vehicle, a first intermittent control unit connected to the fixed station provided on the negative ground line of the starter motor, and a second connected to the timer / power supply unit between the fixed station and the power supply. It consisted of two intermittent control units.

When the IC card or the ID tag is placed or inserted in the receiving section, the contacts are closed and the second intermittent control section is closed, the IC card or the ID tag obtains power and communicates with the fixed station. Only when the preset identification code matches, the fixed station outputs a drive permission signal to the first intermittent control unit, and the starter motor can be driven by a normal key switch operation. That is, the receiving portion corresponds to a contact for turning on the power, and turning on / off the contact corresponds to placing or inserting an IC card or an ID tag in the receiving portion. Further, locking and unlocking of the engine start is performed by a first intermittent control unit provided on a minus ground line of the starter motor.

According to the second aspect of the present invention, there is provided a starter motor with an anti-theft device for an industrial vehicle.
A C-card or ID tag, a vehicle power supply, a receiving unit provided in the vehicle interior with a power supply unit with a timer provided with a contact for placing or inserting the IC card or ID tag, and an IC card connected to the power supply Or a fixed station provided outside the cabin communicating with the ID tag, and a first intermittent control unit connected to a fixed station provided on a conductive part between a conductive end of a magnet switch part of the starter motor and a brush of the motor part. And a second intermittent control unit connected to the timer / power supply unit between the fixed station and the power supply.

According to a third aspect of the invention, there is provided a starter motor with an anti-theft device for an industrial vehicle, wherein the receiving portion is provided on the instrument. Provided on the top or front of the instrument.

According to a fourth aspect of the present invention, there is provided a starter motor with an anti-theft device for an industrial vehicle, wherein the receiving portion is provided in a trim in a vehicle compartment. The trim is a front pillar or a front door trim.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of the anti-theft device, FIG. 2 is a block diagram showing a relationship between an IC card, a fixed station, and a first gating control unit, and FIG. 3 is a flowchart. In the drawing, reference numeral 1 denotes a magnetic shift type starter motor, which has a shape in which a small cylinder is mounted on a large cylindrical tube, and has a portion protruding in a U-shape from one end of the large cylindrical shape. The small cylinder is a magnet switch unit 2, the large cylinder is a motor unit 3, a U-shaped protruding part is a clutch unit 4 in which a pinion gear is housed, 5 is an ignition switch of the engine, and 6 is a battery of a power supply.
The magnet switch unit 2 includes a plunger 7, a bull-in coil 9 wound around a shaft 8 of the plunger 7, a holding coil 10, a movable contact 11, and a fixed contact 1.
2a and 12b. The coil is switch terminal 2
3, the fixed contact 12b is connected to the brush 13 of the motor unit 3. At the other end of the shaft 8, there is a shift lever 14 that rotates via a rotation shaft 14a. In the figure, 2
4 denotes a battery terminal, and 25 denotes a motor terminal. The motor unit 3 includes a yoke, a field coil 16, an armature 17, a brush 13, a commutator 18, and a shaft 19. The clutch unit 4 is rotatably connected to the other end of the shift lever 14 at the other end of the shaft 19,
It has a pinion 21 that meshes with the ring gear 20. 22
Is a clutch.

The IC card 30 is a non-powered card having an IC chip therein.
The chip does not operate, and is placed or inserted into a receiving portion in the vehicle compartment to obtain power from the vehicle via the power input portion. The IC card 30 has a thin rectangular shape and the same size as a business card or a commuter pass. Inside, a transmitting antenna 31 and a transmitting circuit 6 for transmitting a preset identification code via the transmitting antenna 31
3, a modulation circuit 64 for modulating transmission data, a memory 32 for storing an identification code, and a memory 32 for storing the identification code.
And a power supply circuit 65 for using DC power from a battery as a memory, a control circuit, a modulation circuit, and an operation power of the transmission circuit, and a power supply circuit 65 on an outer surface. Is provided with a power input section 34 connected to the power supply section. When the IC card 30 is placed on the receiving portion 35 provided on the upper surface of the instrument 29 of the vehicle, the power input portion 34 comes into contact with the contact 36 provided on the receiving portion 35 so that power is input into the IC card 30. Is formed. The receiving portion 35 can place only the IC card 30 of a specified size. One end of the receiving portion 35 has a contact 3
6, the other end is connected to the battery 6 via the second intermittent control unit 38.
And a timer / power supply unit 28 having a timer 39 inside the conductor 37 between the contact 36 and the second intermittent control unit 38, which disconnects the conductor 38 after a required time. The second intermittent control unit 38 includes the battery 6 and the fixed station 40.
And is connected to the timer / power supply unit 28. The second intermittent control section 38 includes an electromagnetic coil 41 and an electromagnetic contact 42.

A fixed station 40 provided at a position near the starter motor 1 of the vehicle body is connected to the battery 6 and has a second intermittent control section 38 in the middle thereof. The fixed station 40 communicates with the IC card 30. The fixed station 40 includes a receiving antenna 43 that performs non-contact communication with the IC card 30 and a receiving circuit 4 that receives a signal of a specific frequency, that is, an identification code.
4, a demodulation circuit 45 for demodulating the signal of the identification code,
The control circuit 46 is configured to compare with a preset identification code and to output a signal for driving the first intermittent control unit 40 when the comparison result is determined to be suitable, and a memory 47 for recording the preset identification code. , The power supply 48 is taken from the battery 6. The control circuit 46 is connected so that a drive signal can be sent to the first intermittent control unit 50.

The first intermittent control section 50 is provided on the ground wire 49 of the field coil 16 of the motor section 3. The first gating control unit 50 includes the same electromagnetic coil 5 as the second gating control unit 38.
1 and the electromagnetic contact 52. When power is supplied from the fixed station 40 to excite the electromagnetic coil 51 and close the electromagnetic contact 52, the starter motor 1 is turned on by the normal ignition switch 5 and a current flows, and the engine can be started. When power is not supplied from the fixed station 40, the electromagnetic coil 51 is demagnetized, the electromagnetic contact 52 is opened, and no current flows.
Therefore, even if the ignition switch 5 is turned on, the engine does not start.

The operation of the first embodiment of the present invention will be described. Even if an authorized crew carries the IC card 30 and tries to move the vehicle, the IC card 30 does not operate without power supply even when approaching the vehicle. The crew opens the door using a key (not shown)
When the user enters the vehicle and places the IC card 30 on the receiving portion 39 on the instrument 29, the contact 36 of the receiving portion 39 contacts the power input portion 34 of the IC card 30 to form a closed circuit.
The C card 30 obtains power from the battery 6, excites the electromagnetic coil 41 of the second intermittent control unit 38, closes the contact 36, and operates the fixed station 40. At the same time, the timer 39 is operated. The IC card 30 extracts an identification code of a regular crew member from the memory 32 and outputs the identification code as electromagnetic waves to the atmosphere via the transmission antenna 31. The fixed station 40 operates the reception antenna 43 and receives the unique identification code of the IC card 30 by the reception circuit 44. The identification code of the receiving circuit 44 is demodulated by the demodulating circuit 45, and is compared with the code signal set in the memory 47 by the control circuit 46. If the two match, it is determined that the driver is a regular crew member and outputs an engine start permission signal. . After that, when the key is turned and the ignition switch 5 is turned on, the engine starts. When the required time elapses after the engine is started, the IC card 30 placed on the receiving portion 35 of the instrument 29 remains open, and the timer 39 is activated to open the circuit, and the operation of the IC card 30 is stopped. The intermittent control unit 38 is also opened, and the fixed station 40 is also stopped. Also, the first intermittent control unit 50 is opened.
When the ignition switch 5 is turned off with the engine running and the clutch disengaged, the rotation of the pinion gear 21 also stops, the electromagnetic force of the magnet is lost at the same time, the shift lever returns to the original position with the force of the return spring, and the ring gear and the pin-on gear Automatically disconnects. On the other hand, when the starter motor 1 rotates the crankshaft, the camshaft linked thereto rotates, the distributor operates, and the engine operates.

If an IC card having a code having a different unique identification code is placed on the receiving portion 35, the size of the IC card is different or the position of the power input portion is different, so that the IC cards do not easily match. Also, if the IC card is placed on the battery 6
Even if the power is obtained from and the identification code is transmitted, it is received and compared by the fixed station, but the identification code does not match.
The second intermittent control unit does not operate. No matter how much you turn the key,
The ignition switch 5 is not turned on and the engine does not start.

Therefore, even if a malicious person who knows the structure of the car tries to steal the car and short-circuits the connection terminal of the starter motor 1 to start the engine, the negative ground wire ( Providing the first intermittent control unit on the (ground wire) makes it difficult for even a novice to find and gives up.

Since the IC card 5 and the fixed station 40 are communicated wirelessly in the vehicle compartment without being connected by wire, a complicated crossing wiring in the vehicle becomes unnecessary. Further, the fixed station 40 can be installed at a free position where it is difficult to find, and it is difficult to steal.

FIG. 4 shows a second embodiment of the present invention. The second embodiment is different from the first embodiment in that the first intermittent control unit is provided on a conductive wire between the magnet unit and the motor unit. The structure and operation are the same as in the first embodiment, and a description thereof will be omitted. Since the first intermittent control section is provided in the conductive section of the starter motor 1 in which the magnet section and the motor section are integrated, it is difficult to find the same as in the first embodiment.

Although not shown, the receiving portion of the IC card
A sheath-like (bag-like,
You may provide the card insertion part of a receiving box shape. Also, a sheath (bag-shaped, receiving box-shaped) card insertion portion may be provided on a trim surface in the vehicle compartment, for example, on a front pillar trim or a door trim surface. All put IC card (including insertion)
A structure in which a switch (contact) can be turned on only by itself is desirable. In addition, the receiving portion may be provided with a finger hook concave portion so that the IC card can be easily taken. The sheath-shaped (bag-shaped, receiving-box-shaped) card insertion portion is provided with an IC card so that the IC card can be easily inserted and removed.
It is good to have a structure in which a part of the card is exposed.

An ID tag may be used instead of an IC card.
The ID tag is often worn by a crew member, but unless the tag is always placed on a receiving portion in the vehicle compartment or inserted, the switch (contact) does not turn on and the engine does not start.

[0022]

Since the present invention is configured as described above, the following effects can be obtained.

[0023] Not the engine key, but the I carried by the crew
As we attached anti-theft device to C card or ID tag,
Even if the engine key is stolen, the engine will not start with that key. Particularly, in the case of an industrial machine, a common key is often used, and there is a high possibility that the key will be stolen. Therefore, the code corresponding to each of the industrial machines can be set in the IC card or the ID tag instead of the key, which is a great advantage.

Since the switch is turned on only by setting the IC card and the ID tag at predetermined positions in the vehicle compartment, the operation is not troublesome.

The wireless communication between the IC card or ID tag set in the receiving portion and the fixed station provided in an unobstructed place in the room eliminates the necessity of installing complicated wirings. It also saves wiring space in the room. Further, the fixed station can be freely provided at a position where it is difficult for a thief to find it.

Since the first intermittent control section is provided at a location where the starter motor is not known, the thief is difficult to find and eventually gives up stealing.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an anti-theft device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a relationship among an IC card, a fixed station, and a first gating control unit.

FIG. 3 is a flowchart.

FIG. 4 is a schematic configuration diagram of an anti-theft device according to a second embodiment of the present invention.

FIG. 5 is an explanatory view of a conventional anti-theft device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Starter motor 2 Magnet switch part 3 Motor part 4 Clutch part 5 Ignition switch 6 Battery 7 Plunger 8 Shaft 9 Pull-in coil 10 Holding coil 11 Movable contact 12a, 12b Fixed contact 13 Brush 14 Shift lever 14a Rotating axis 15 Yoke 16 Field coil 17 Armature 18 Commutator 19 Shaft 20 Ring gear 21 Pinion 22 Clutch 23 Switch terminal 24 Battery terminal 25 Motor terminal 26, 27 Conductor 28 Timer and power supply unit 29 Instrument 30 IC card 31 Transmit antenna 32 Memory 33 Control circuit 34 Power input unit 35 Receiving Unit 36 contact 37 conducting wire 38 second intermittent control unit 39 timer 40 fixed station 41 electromagnetic coil 42 electromagnetic contact 43 reception address Antenna 44 reception circuit 45 demodulation circuit 46 control circuit 47 memory 48 power supply 49 ground wire 50 first intermittent control unit 51 electromagnetic coil 52 electromagnetic contact 53 conductive unit 54 key 55 antenna 56 ignition switch 57 communication module 58 immobilizer control unit 60 IC chip 61 Key cylinder 63 Transmission circuit 64 Modulation circuit 65 Power supply circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06K 17/00 G06K 17/00 L 19/00 19/00 Q

Claims (4)

[Claims] 1. An unpowered IC card or ID tag carried by a regular crew member, a vehicle power supply, an IC card or I
A receiving unit provided in the vehicle interior with a power supply unit with a timer provided with a contact for placing or inserting a D tag, and a fixed station provided outside the vehicle room connected to a power supply and communicating with an IC card or an ID tag; It is characterized by comprising a first gating control unit connected to the fixed station provided on the minus ground line of the starter motor and a second gating control unit connected to the timer / power supply unit between the fixed station and the power supply. Industrial vehicle anti-theft device. 2. An unpowered IC card or ID tag carried by a regular crew, a vehicle power supply, an IC card or an I
A receiving unit provided in the vehicle interior with a power supply unit with a timer provided with a contact for placing or inserting a D tag, and a fixed station provided outside the vehicle room connected to a power supply and communicating with an IC card or an ID tag; A first intermittent control section connected to a fixed station provided on a conductive section between the conductive end of the magnet switch section of the starter motor and the brush of the motor section, and a timer / power supply section between the fixed station and the power supply. An industrial vehicle anti-theft device comprising a second intermittent control unit to be connected. 3. The starter motor with an anti-theft device for an industrial vehicle according to claim 1, wherein the receiving portion is provided on an instrument in the vehicle cabin. 4. The starter motor with an anti-theft device for an industrial vehicle according to claim 1, wherein the receiving portion is provided on a trim in the vehicle compartment.