JP4573203B2 - Industrial vehicle anti-theft device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an antitheft device for an industrial vehicle, and more particularly to an antitheft device provided in a starter motor.
[0002]
[Prior art]
A conventional vehicle antitheft device employs a structure in which an engine is not started by controlling a starter motor drive operation by a key switch equipped with an IC chip.
For example, as shown in FIG. 5, when the IC chip 60 is attached to 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 are provided. A communication module 57 for performing communication with 60 is provided, and an immobilizer 58 for controlling whether or not the engine signal can be started by a command signal from the communication module 57 is provided.
(For example, see JP-A-8-108824)
[0003]
This device allows the engine to be started only when the ID code transmitted from the IC chip 60 attached to the key 54 matches the ID code stored in the system control circuit of the communication module 57.
[0004]
[Problems to be solved by the invention]
However, an IC chip 60 is mounted on the engine key 54. By inserting the engine key 54 into the key cylinder 61 and rotating the key 54, the power is turned on and the IC chip 60 is transmitted to operate the communication module 57. The engine key 54 is very important. If this unique key 54 is stolen, prevention of theft of this vehicle cannot be avoided.
[0005]
The present invention has been made to solve the above-described problems. The engine key remains the same as before, and an IC card of an IC card or an ID tag carried by a crew member is separately attached. An anti-theft device for industrial vehicles that can communicate and contact the engine without contact is provided.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an industrial vehicle antitheft device according to claim 1 is a non-powered IC card or ID tag carried by a regular crew member, a vehicle power supply, an IC card or an ID tag. A power supply unit with a timer provided with a contact point for placing or inserting the terminal, a receiving unit provided in the vehicle interior, a fixed station provided outside the vehicle compartment connected to the power source and communicating with the IC card or ID tag, and a starter motor The first intermittent control unit connected to the fixed station and the second intermittent control unit connected to the timer / power supply unit between the fixed station and the power source.
[0007]
When the IC card or ID tag is placed or inserted in the receiving part, the contact is closed and the second intermittent control part is closed, the IC card or ID tag gets power and communicates with the fixed station, both of which are preset. Only when the identification codes match, 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. In other words, the receiving portion corresponds to a contact for turning on the power, and on / off of the contact corresponds to placement or insertion of the IC card or ID tag in the receiving portion.
The engine is locked / unlocked by the first intermittent control unit provided on the negative ground line of the starter motor.
[0008]
The starter motor with an anti-theft device for an industrial vehicle according to claim 2 is a non-powered IC card or ID tag carried by a regular crew member, a vehicle power source, and a contact point on which the IC card or ID tag is placed or inserted. A power supply unit with a timer provided in the vehicle interior, a stationary station connected to the power source and communicated with the IC card or the ID tag, a conductive end of the magnet switch unit of the starter motor, The first intermittent control unit connected to the fixed station provided in the conductive part between the brush of the motor unit and the second intermittent control unit connected to the timer and power supply unit between the fixed station and the power source .
[0009]
The starter motor with an antitheft device for an industrial vehicle according to claim 3 is provided with a receiving portion in the instrument. Provided on the top or front of the instrument.
[0010]
The starter motor with an antitheft device for an industrial vehicle according to claim 4 is provided with a receiving portion in a trim in the vehicle interior. The trim is a front pillar or a front door trim.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic configuration diagram of an anti-theft device, FIG. 2 is a block diagram showing a relationship between an IC card, a fixed station, and a first intermittent control unit, and FIG. 3 is a flowchart.
In the figure, reference numeral 1 denotes a magnetic shift type starter motor. The outer shape of the motor is a small cylindrical cylinder placed on a large cylindrical cylinder, and has a U-shaped part protruding from one end of the large cylindrical cylinder. The small cylinder is a magnet switch part 2, the large cylinder is a motor part 3, the U-shaped protruding part is a clutch part 4 in which a pinion gear is housed, 5 is an engine ignition switch, and 6 is a power source battery.
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 fixed contacts 12a and 12b.
The coil is connected via the switch terminal 23, and the fixed contact 12 b is connected to the brush 13 of the motor unit 3. On the other end side of the shaft 8, there is a shift lever 14 that rotates and moves via a rotating shaft 14a. In the figure, 24 indicates a battery terminal, and 25 indicates 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 portion 4 has a pinion 21 that is rotatably connected to the other end of the shift lever 14 on the other end side of the shaft 19 and meshes with the ring gear 20. 22 is a clutch.
[0012]
The IC card 30 is an unpowered card having an IC chip inside. When the crew member carries the IC card 30, the IC chip does not operate. Get power from the side.
The IC card 30 is a thin square and is the same size as a business card or commuter pass. Inside, there are a transmission antenna 31, a transmission circuit 63 that transmits a preset identification code via the transmission antenna 31, a modulation circuit 64 that modulates transmission data, a memory 32 that stores the identification code, and a memory that stores the identification code. A control circuit 33 that reads from 32 and outputs from the transmission antenna 31 and a power supply circuit 65 that uses the DC power from the battery as the operating power of the memory, control circuit, modulation circuit, and transmission circuit are provided. A power input unit 34 connected to 65 is provided. 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 is in contact with the contact 36 provided on the receiving portion 35 and inputs power into the IC card 30. Is formed.
The receiving unit 35 can only place the IC card 30 of a specified size.
Inside the receiving portion 35, one end is connected to the contact 36, and the other end is connected to the battery 6 via the second intermittent control unit 38, and a lead wire 37 between the contact 36 and the second intermittent control unit 38 is internally connected. A timer / power supply unit 28 including a timer 39 that disconnects the conductive wire 38 after the required time has elapsed is provided.
The second intermittent control unit 38 is located between the battery 6 and the fixed station 40 and is connected to the timer / power supply unit 28.
The second intermittent control unit 38 includes an electromagnetic coil 41 and an electromagnetic contact 42.
[0013]
The fixed station 40 provided near the starter motor 1 of the vehicle body is connected to the battery 6 and has a second intermittent control unit 38 in the middle thereof. The fixed station 40 communicates with the IC card 30.
The fixed station 40 includes a reception antenna 43 that performs non-contact communication with the IC card 30, a reception circuit 44 that receives a specific frequency, that is, an identification code signal, a demodulation circuit 45 that demodulates the identification code signal, A control circuit 46 that outputs a signal for driving the first intermittent control unit 40 when compared with the set identification code and determines that the comparison result is suitable, and a memory 47 that records a 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.
[0014]
The first intermittent control unit 50 is provided on the ground line 49 of the field coil 16 of the motor unit 3. The first intermittent control unit 50 is formed by the electromagnetic coil 51 and the electromagnetic contact 52 as in the second intermittent control unit 38.
When power is supplied from the fixed station 40 and the electromagnetic coil 51 is energized to close the electromagnetic contact 52, the starter motor 1 is energized when the normal ignition switch 5 is turned on, and the engine can be started.
If power is not supplied from the fixed station 40, the electromagnetic coil 51 is demagnetized, the electromagnetic contact 52 is open, and no current flows. Therefore, even if the ignition switch 5 is turned on, the engine does not start.
[0015]
The operation of the first embodiment of the present invention will be described.
Even if a regular crew member carries the IC card 30 and tries to move the vehicle, the IC card 30 does not operate with no power supply even if it is close to the vehicle.
When the crew member opens the door using a key (not shown), 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. A closed circuit is formed, and the IC 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 activated.
The IC card 30 pulls out an identification code, which is a regular crew member, from the memory 32 and outputs it as an electromagnetic wave to the atmosphere via the transmission antenna 31.
The fixed station 40 activates 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 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 an engine start permission signal is output. . Thereafter, when the key is turned and the ignition switch 5 is turned on, the engine is started.
The IC card 30 placed on the receiving portion 35 of the instrument 29 is left as it is, and when the required time elapses after the engine is started, the timer 39 is activated to become an open 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. The first intermittent control unit 50 is also opened.
If the engine is started and the ignition switch 5 is turned off with the clutch disengaged, the pinion gear 21 also stops rotating, and at the same time, the electromagnetic force of the magnet is lost. The shift lever returns to its original position with the force of the return spring, and the ring gear and pin-on gear. Automatically disconnects.
On the other hand, when the starter motor 1 rotates the crankshaft, the camshaft interlocked therewith rotates, the distributor also operates, and the engine operates.
[0016]
Even if an IC card having a code having a different unique identification code is placed on the receiving unit 35, the size is different or the position of the power input unit is not easily matched. Even if the IC card obtains a power source from the battery 6 and transmits an identification code if it is placed skillfully, it is received and compared by a fixed station, but the identification code does not match and the second intermittent control unit Does not work. No matter how many times the key is turned, the ignition switch 5 is not turned on and the engine is not started.
[0017]
Therefore, even if a malicious person who knows the structure of the car tries to steal the car and tries to start the engine by short-circuiting the connection terminal of the starter motor 1, the negative grounding wire (ground wire) of the starter motor It is difficult for even an expert to find the first intermittent control unit provided in the case, and it gives up.
[0018]
Since the IC card 5 and the fixed station 40 are not connected in a wired manner in the vehicle interior but communicated wirelessly, wiring that crosses the vehicle in a complicated manner becomes unnecessary. In addition, the fixed station 40 can be installed in a free position where it is difficult to find, and is difficult to be stolen.
[0019]
A second embodiment of the present invention is shown in FIG. The second embodiment is different from the first embodiment in that the first intermittent control unit is provided on the conductive wire between the magnet unit and the motor unit.
The structure and operation are the same as those in the first embodiment, and will be omitted.
Since the first intermittent control part is provided in the conductive part of the starter motor 1 in which the magnet part and the motor part are integrated, it is difficult to find the same as in the first embodiment.
[0020]
Although not shown, the IC card receiving portion may be provided with a sheath-like (bag-like or receiving box-like) card insertion portion on the front surface as well as the instrument upper surface in the passenger compartment.
Moreover, you may provide the card insertion part of a sheath shape (bag shape, receiving box shape) in the trim in a vehicle interior, for example, a front pillar trim, and a door trim surface.
In any case, it is desirable to have a structure in which a switch (contact) can be inserted simply by placing an IC card (including a case where it is inserted). Further, the receiving portion may be provided with a finger catching recess so that the IC card can be easily taken.
The card insertion portion in the form of a sheath (bag shape, receiving box shape) may have a structure in which a part of the IC card is exposed so that the IC card can be easily inserted and removed.
[0021]
Not only an IC card but also an ID tag may be used. The ID tag is often worn by the crew, but if it is not placed on the receiving part in the passenger compartment or inserted, the switch (contact) will not be turned on and the engine will not start.
[0022]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0023]
Since the anti-theft device is attached not to the engine key but to the IC card or ID tag carried by the crew, even if the engine key is stolen, the engine will not start with that key. In particular, in the case of an industrial machine, a shared key is often used, and there is a high risk of theft with a key. Therefore, since codes corresponding to individual industrial machines can be set not on the key but on the IC card or ID tag, the advantage is great.
[0024]
Since the switch is provided only by setting the IC card and the ID tag at a predetermined position in the vehicle compartment, the operation is not troublesome.
[0025]
Since the IC card or ID tag set in the receiving part and the fixed station installed in a place that does not interfere with the room can be communicated wirelessly, it is not necessary to install complicated wiring. It also saves wiring space.
Furthermore, the fixed station can be freely provided at a position where it is difficult for a thief to find it.
[0026]
Since the first intermittent control unit is provided in an unknown part of the starter motor, the thief is difficult to find and eventually gives up on stealing.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an antitheft device according to a first embodiment of the present invention.
FIG. 2 is a block diagram illustrating a relationship among an IC card, a fixed station, and a first intermittent control unit.
FIG. 3 is a flowchart.
FIG. 4 is a schematic configuration diagram of an antitheft device according to a second embodiment of the present invention.
FIG. 5 is an explanatory diagram of a conventional antitheft 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 Moving contact 12a, 12b Fixed contact 13 Brush 14 Shift lever 14a Rotating shaft 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 / power supply unit 29 Instrument 30 IC card 31 Transmit antenna 32 Memory 33 Control circuit 34 Power input unit 35 Unit 36 Contact 37 Conductor 38 Second intermittent control unit 39 Timer 40 Fixed station 41 Electromagnetic coil 42 Electromagnetic contact 43 Reception antenna 44 Reception circuit 45 Demodulation Path 46 Control circuit 47 Memory 48 Power supply 49 Ground line 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

Claims (4)

A power supply unit with a timer provided with a contact point for contact with a non-powered IC card or ID tag carried by a regular crew member, a vehicle power supply, and an IC card or ID tag placed or inserted therein. A fixed station provided outside the passenger compartment that is connected to the power source and communicates with the IC card or ID tag, a first intermittent control unit provided on the negative ground line of the starter motor and connected to the fixed station, the fixed station and the power source An antitheft device for an industrial vehicle, characterized in that it is configured with a second intermittent control unit connected to a timer and power supply unit. A power supply unit with a timer provided with a contact point for contact with a non-powered IC card or ID tag carried by a regular crew member, a vehicle power supply, and an IC card or ID tag placed or inserted therein. Fixed station provided outside the passenger compartment connected to the power source and connected to the IC card or ID tag, and a fixed station provided in the conductive part between the conductive end of the magnet switch part of the starter motor and the brush of the motor part An antitheft device for an industrial vehicle, comprising: a first intermittent control unit connected to the second station, and a second intermittent control unit connected to a timer / power supply unit between a fixed station and a power source. The starter motor with an antitheft device for an industrial vehicle according to claim 1 or 2, wherein the receiving portion is provided in an instrument in the vehicle compartment. The starter motor with an antitheft device for an industrial vehicle according to claim 1 or 2, wherein the receiving portion is provided in a trim in the vehicle compartment.

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