JP2005206131A - Anti-theft remote device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-theft remote device of a construction machine in which a lock mechanism is mounted on a traveling driving main part of the construction machine, operation for lock release of the traveling driving main part is facilitated and installation and maintenance are simplified. <P>SOLUTION: A control unit 17 in which a communication unit 14 for receiving an identification number from a portable type communication unit 13, a control circuit 15 and a relay 16 are stored in one case is installed on one or a plurality of various kinds of traveling driving main part of the construction machine. The control unit 17 makes the traveling driving main part to the lock release state by a signal from the portable type communication unit 13. In order to operate the construction machine, the identification number from the portable communication unit 13 is transmitted to the respective control units 17, the respective control units 17 are operated by coincidence of the identification number and the lock state of the traveling driving main part is released. In the device, a receiving part side of the anti-theft remote device can be installed in the construction machine and the control unit 17 is integrally mounted to various kinds of traveling driving main parts. Therefore, wiring is isolated and a post-attachment work is simple. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a theft prevention remote device for an industrial machine, for example, a construction machine (hereinafter referred to as a construction machine) having a traveling unit such as a vibration roller, a tire roller, and a caterpillar.

Conventionally, passenger cars have a human body sensor and a buzzer installed on the car body to prevent theft, and the human body sensor senses and sounds a buzzer when someone approaches and opens the door. . In addition, a crime prevention device has been proposed in which an IC card and an ID tag are used in combination so as not to be activated even when an engine key is operated.
Since bulldozers and power shovels are used only in limited numbers and are operated by licensed owners even at construction sites, the management of engine keys has been easy because the number of users is limited.

In recent years, anti-theft devices have been developed due to an increase in theft cases targeting these construction machines. Basically, most of the constructions prevent the engine from starting. As an example, an anti-theft circuit terminal is attached to an engine key. In this configuration, the LED is light-emitted in the key key insertion direction in the engine key gripping part, and the light receiving part for releasing the anti-theft circuit operation is attached to the key cylinder, and the engine key is inserted. Sometimes the light receiving part receives the light from the LED and offsets the antitheft circuit. In this device, when the starter motor is turned by short-circuiting the ignition switch without inserting the engine key, the anti-theft circuit works and an alarm sounds.
The above configuration always prevents the theft by having the engine key held by the driver.

However, since construction machines used at construction sites and the like can be used by anyone of the parties and the frequency of taking out the engine key increases, anti-theft measures are also complicated.
In addition, when renting out a lease, there is a high risk that an engine key can be easily duplicated.
Therefore, construction equipment anti-theft devices have been developed regardless of the use of engine keys.

For example, a traveling mechanism of a construction machine will be described with reference to FIG. 5. A construction machine that travels by rotating a hydraulic pump 2 directly connected by driving an engine 1 and sending hydraulic pressure to a traveling hydraulic motor 8 to rotate a caterpillar. is there. Specifically, on the engine side, a starter motor 3 for driving the engine 1, a fuel pump 5 for supplying fuel from the fuel tank 4 to the engine, and a driving main part of a fuel adjustment circuit 6 for automatically controlling the amount of fuel supply Is equipped. In addition, a hydraulic control electromagnetic valve 7 is provided on the hydraulic pump 2 side to drive a traveling hydraulic motor 8. As an example of a construction machine, in the case of a power shovel, the hydraulic control electromagnetic valve 7 sends hydraulic pressure to a hydraulic motor for traveling, a hydraulic motor for turning a cabin, and a working hydraulic cylinder for operating an arm, a boom or a bucket. The driver is selectively operated and used.
Reference numeral 9 denotes an engine key.

  The anti-theft device for construction equipment shown in FIG. 5 includes a keyboard unit circuit 10 and a determination unit circuit 11, and a plurality of relays are installed in the determination unit circuit 11. Connected with. When the main drive unit is the starter motor 3, the extension cord is connected by cutting off the middle of the power line for starting the starter motor 3. The extension cord is inserted into the existing line wired along the narrow space in the engine room and routed in the same way as the route of the existing line, eliminating the trace of retrofitting, and the extension cord can be easily understood. Wiring is performed so as not to be present, and the determination unit circuit 11 is pulled out. And it connects to the contact line of the relay in the determination part circuit 11. FIG. Similarly, when the main driving part is the fuel pump 5, the extension cord is connected by cutting the middle of the wiring for operating the fuel pump 5. Thereafter, similarly, the extension cord is routed to the determination unit circuit 11 (and pulled out) and connected to the contact line of another relay in the determination unit circuit 11. The excitation lines of the plurality of relays in the determination unit circuit 11 are energized at the same time when the passwords match.

  The fuel adjustment circuit 6 is installed depending on the type of model, but the supply amount to the engine can be automatically adjusted. When installing the anti-theft device, the power line of the electric circuit is not provided. And the determination unit circuit 11 is wired in the same procedure as described above, and the relay contact line is connected. Similarly, when the main driving part is the hydraulic control electromagnetic valve 7, the power supply line of the hydraulic control electromagnetic valve 7 is disconnected and wired to the determination unit circuit 11 in the same procedure as described above. As described above, the excitation lines of these relays are similarly energized when the passwords match. That is, a reciprocating extension cord (indicated by a one-dot chain line) is inserted into an existing line from various driving main parts shown in FIG. 5, and the interior of the engine room is routed along the existing line and wired. And are connected to the contact lines of the respective relays in the determination unit circuit 11.

  This anti-theft device is retrofitted at the request of the construction equipment owner. As described above, the specific structure is a determination unit for cutting or conducting the middle of the wiring connecting the various driving main units and the power source. Collect in one place of the circuit 11. Each relay is connected to the collected wiring, but the extension cords are routed together with the existing lines from the various driving main units to the determination unit circuit 11 and are complicatedly wired. Further, the determination unit circuit 11 and the keyboard unit circuit 10 for setting the personal identification number are formed separately and are connected by an input / output code.

The anti-theft device stores the code number that has already been entered in the keyboard circuit 10 in the memory, and the starter motor 3, The electric lines of the fuel pump 5, the fuel adjustment circuit 6, and the hydraulic control solenoid valve 7 are opened. Therefore, even if the engine key 9 is turned ON in this state, no operation is performed, and the construction machine is in a stopped state, so that theft is prevented.
On the other hand, even if the thief tries to carry away the construction machine and turns the starter motor 3 using another battery, the main driving parts other than the starter motor 3 are inoperable. Can't hang.

Further, since the power supply of the anti-theft device is energized regardless of whether the engine key 9 is ON or OFF, when the password is entered into the keyboard circuit 10 by the thief when the engine key 9 is OFF, this password If the password is wrong with the set password, a warning sound is generated by the speaker 12 to urge the surroundings to be protected from theft. Further, even if the connection between the determination unit circuit 11 and the keyboard unit circuit 10 is improperly disconnected, a warning sound is generated.

JP-A-9-175329 JP 10-44938 A

  The above anti-theft device has an extension cord intervening in the existing line and routed in a complicated manner along the existing line, so that the thief looks for the starter line to run the engine. In addition, it is difficult to determine which wiring is applicable, even if you try to connect to the power supply line by cutting the wiring part that seems to be a starter line. Therefore, in the end, the time required for stealing increases, and it aims at giving up stealing.

However, in the above configuration, it is difficult to install an anti-theft device attached later. That is, if the drive main part is complicatedly wired by inserting a part of the circuit configuration (power supply wiring) into the existing line using the extension cord to the release relay of the judgment part circuit 11, it is retrofitted. Due to the work, there has been a problem that man-hours such as connection of the driving main part, connection of the determination part circuit 11 and routing of the extension cord are increased and it takes time for wiring work.
Also, when repairing wiring due to rust and corrosion due to muddy water, it takes time to check the code to be replaced, to replace it and restore it, and so much cost is required.
In addition, the keyboard is exposed near the driver's seat, and there is a problem that it becomes an obstacle when operating the construction machine. Further, because of exposure, the numeric keypad is easily soiled by external force, mud, and the like, and the keyboard unit circuit 10 and the determination unit circuit 11 attached to the inside of the vehicle body are connected by a cord, but there is a risk of the cord being twisted.
Therefore, the present invention provides a remote device for preventing theft of equipment having an engine starter key that can be easily installed in a short time and can be installed in a short time, and can be easily unlocked.

According to the present invention, the remote control device for theft prevention of the construction machine according to the first aspect of the present invention has a password for turning on the control unit from the portable communication device in the device having the engine starter key switch. A control unit including a communication device for receiving, a control circuit, and an electronic component that sets an electric circuit of a main driving unit of the device to one of ON / OFF states is controlled by the control unit of the device main body. The control unit is in an OFF state regardless of the operation of the engine starter key switch when the engine is turned off and attached to one or a plurality of outer peripheral mounting parts or internal mounting parts of various driving main parts. And the control unit receives the personal identification number from the portable communication device, and the control circuit When compared match the configured security code memory, characterized in that the operable state the one or more drive main unit by the control unit to the ON state.
That is, the antitheft remote device of the present invention is a portable communication device in which the conventional PIN code input is a wired keyboard and the output is connected with a cable, and the PIN code is input with a numeric keypad. One or more control units consisting of a wireless output and a communication device, control circuit and relay are attached to each drive main part of the device so that the wiring between the control unit and the main drive part is as short as possible. Is connected to.

In the configuration of claim 2, in a device having an engine starter key switch, a control unit including a control circuit and an electronic component that sets an electric circuit of a driving main part of the device to one of ON and OFF states, A communication device that is attached to one or a plurality of outer peripheral mounting parts or internal mounting parts of various driving main parts controlled by the control unit of the apparatus main body, and receives a personal identification number for turning the control unit on. The control unit is mounted on the apparatus main body side, and the control unit waits in the OFF state regardless of the operation of the engine starter key switch in the engine off state of the apparatus, and the drive main part is disabled, and the communication The machine receives the code number from the portable communication device, and the control unit compares it with the code number set in the memory in the control circuit. Ie in the ON state when the match characterized by the operable state the one or more drive main portion, in which so as to operate a plurality of control units in one communication device.

According to the third aspect of the present invention, various driving main parts of the device main body are driven by an engine starter, an engine fuel supply pump, an engine fuel adjustment device, an engine intake passage opening / closing device, and a hydraulic pump directly connected to the engine. One of a hydraulic control solenoid valve of a hydraulic system motor, a hydraulic control solenoid valve of a cabin rotation hydraulic motor driven by the hydraulic pump, and a hydraulic control solenoid valve of an arm hydraulic cylinder driven by the hydraulic pump, or It is characterized by being plural.
In other words, the main part of the drive is mainly composed of four conditions: fuel, hydraulic pressure, starter motor power, and air cleaner that sends air to operate the construction equipment. is there. It also prevents theft of things that interfere with travel.

According to a fourth aspect of the present invention, in the second aspect of the present invention, a plurality of control units are provided for one device-side communication device.
In the configuration of claim 5, in the configuration of claim 1, in which a plurality of control units of various drive main parts of the device main body are used, the password set in the memory in the control circuit accommodated in the control unit is , At least two kinds of passwords are assigned.
In other words, by assigning different PIN numbers to some of the various driving main parts, two different PIN numbers are entered and all of the various driving main parts are turned on, so it takes time to release the driving main parts. Take it. Also, when the two types of passwords are set to the first password and the second password, when the two passwords in the memory match, the various drive main units are turned on, so the drive main unit It takes time to release the.
According to a sixth aspect of the present invention, a structure in which a control unit for theft prevention can be installed in advance in each of the main driving parts. That is, the anti-theft remote device can be easily installed as a retrofit at the request of a construction machine user.

According to the construction of the antitheft device for construction equipment according to the present invention, the conventional troublesome wiring work can be eliminated by attaching the control unit directly to each driving main part, and the portable communication device can be By using it, there is no wired keyboard in the cabin and no wiring cable is required. In addition, the wiring in the engine room is small, retrofitting wiring work is very easy, and the number of mounting steps is reduced.
In addition, the anti-theft remote device is activated by receiving the PIN code of the portable communication device with the communication device in the control unit installed in the device and simultaneously operating the electronic components attached to one or more places. Each drive main part can be made into an operable state, and then the construction machine can be started with an engine key.
Therefore, the device cannot be operated without the portable communication device for inputting the personal identification number and the engine key. Further, since the operation of the portable communication device is a remote operation, the installation location of the control unit is flexible, and it is possible to install the control unit inside a construction machine that is not touched.

Further, the control unit may be housed in a case and directly attached to the outer peripheral mounting portion of the main driving portion, or may be attached to the outer peripheral mounting portion of the main driving portion using an L metal fitting or the like.
In addition, a substrate having a circuit completed as a control unit may be attached to the internal mounting portion, or components of the control unit may be incorporated in an attachment plate provided for the control unit.
Further, in the state where the control unit is attached, the part of the control unit attached to the outer peripheral mounting part may face the inside, and the part of the control unit attached to the inner mounting part may face the outside.

  In addition, when the above control unit (having a communication device, a control circuit, and electronic components) is separated from the communication device and the control circuit and the electronic components are control units, the control unit is attached to the main drive unit. Since the control unit and the communication device connected to the control unit are separate, there is no need to arrange them in consideration of the communication sensitivity of the communication device, and the degree of freedom in mounting the control unit is increased. In addition, when multiple control units are installed, the communication device can be shared, and the communication device can be installed at a location that is most sensitive to communication so that multiple control units can be operated reliably. To do.

Also, among the various driving main parts, those that are not directly related to operating the construction machine by driving the hydraulic pump by rotating the engine and driving the traveling system hydraulic motor, that is, the cabin rotating system hydraulic motor by the hydraulic pump, Alternatively, when the control unit is incorporated in the hydraulic control solenoid valve that drives the arm system hydraulic cylinder, the posture is difficult to travel by stopping the cabin laterally and bringing the bucket or the like into contact with the ground.
Therefore, even if the thief can start the engine, if it is difficult to travel as described above, the arm system, the cabin rotation system, and the traveling system control unit must be Since it must be turned on, it cannot be stolen.

  Depending on the type of construction equipment, two types of code numbers may be assigned to a plurality of drive main parts, and all of the various drive main parts may not be unlocked unless two types of code numbers are entered, or In the two types of code numbers, the first code number matches the stored number in the memory, and when the second code number matches, the various drive main units may be turned on, and the code number is increased. It can be complicated, and defense against theft is further increased.

In addition, the drive main part, the control circuit and the electronic components are integrated to shorten the wiring distance, eliminating the need for extension cords as in the past, improving workability after installation, and greatly reducing costs. . In addition, a control unit can be individually attached to the main drive part that seems to require locking, and it is possible to respond to the needs according to the type of vehicle.
In addition, at the manufacturing stage of the drive main part, a structure in which the control unit for anti-theft of the present invention can be installed in the drive main part in advance is formed as an option as necessary, as a production assembly line, dealer, dealer This makes it easier to retrofit options such as adding and changing options, and lowers costs. As a result, the installation rate of the antitheft device can be increased, and theft can be reduced. Moreover, since the installation space for the control unit is secured, the control unit can be easily installed without considering the arrangement in a narrow space.

  In the construction equipment anti-theft remote device of the present invention, the communication device, the control circuit and the electronic parts are attached as control units to the outer peripheral mounting portion or the inner mounting portion of each driving main portion, and the arrangement of each control unit is irregular. In order to turn on the control unit that turns this driving main part off, a circuit must be formed so that each control unit can be found and operated. This is very difficult even if there is a circuit diagram at hand, and it is an effective means for crime prevention because it takes time to carry out construction equipment.

The best mode of the anti-theft remote device for construction equipment according to the present invention is to provide a control unit function from the beginning of the manufacturing stage instead of retrofitting to the housing internal mounting part of the main driving part. Moreover, the crime prevention effect can be further improved by installing so that it cannot be easily disassembled from the outside.
Also, electronic components that control the operation of various drive main parts may be controlled by relays, or a circuit that does not use a relay may be configured by directly controlling the drive main parts. Further, a contactless switch or a semiconductor element for switching may be used instead of the relay 17.
Further, the location for disabling the main driving portion is not limited to the supply power source side, but may be the signal input side.

A first embodiment of the present invention will be described below with reference to FIG.
The remote device for preventing theft of a construction machine, which is a device having an engine starter switch, is performed by communication between the portable communication device 13 and the communication device 14 attached to the construction machine side. A control circuit 15 is connected to the communicator 14, and a relay (electronic component) 16 is connected to the output end of the control circuit 15 and accommodated in a case as a control unit 17. Various driving main parts (fuel pump 5, fuel adjustment) The circuit 6, the starter motor 3, the hydraulic control solenoid valve 7, and the intake passage 18) are connected. As described above, the plurality of control units 17 are provided in various drive main parts, and the various drive main parts are independent from each other. Since the commands to the control unit 17 are performed by radio waves from the portable communication device 13, they are independent. Wiring between various driving main parts is not necessary. Further, since the plurality of control units 17 are operated at once by communication of the portable communication device 13, the troublesome wiring work for concentrating the conventional wiring in one place is eliminated.

  The structure for attaching the control unit 17 to the drive main part may be such that the control unit 17 is attached to the outer peripheral mounting part of the drive main part together with the case, or may be attached using an L bracket or the like. . Alternatively, the control unit 17 may be manufactured as a single board with only the control unit 17 in the internal mounting part of the driving main part, and this board may be attached inside. Further, an installation position of components constituting the control unit 17 may be provided in the internal mounting portion, and the control unit 17 may be incorporated therein. FIG. 1 shows a state in which the case and the outer peripheral mounting portion of the main driving portion are coupled. The control unit 17 'is connected to a hydraulic control electromagnetic valve 7', and the hydraulic control electromagnetic valve 7 'is connected to an arm hydraulic cylinder 8' as one of a working hydraulic motor or hydraulic cylinder.

A specific example of the attachment of the control unit 17 to the drive main part will be described with reference to FIG. 3 by the intake passage 18 connected to the air cleaner 19.
An intake passage 18 connected to the air cleaner 19 couples the control unit 17. The relay 16 in the control unit 17 includes an excitation line 16a and a contact line 16b. The excitation line 16a is connected to the output end of the control circuit 15, and the contact line 16b is an opening / closing device for an intake passage 18 in which the relay 16 is mounted ( The drive main part) 20 is partially connected to the middle of the electric circuit. The relay 16 is kept working while the construction machine is operating.

In the configuration of the present invention, the communication device 14, the control circuit 15 and the relay 16 are integrally attached to the case as a control unit 17 (indicated by a one-dot chain line in FIG. 3) in the main driving portion, and the interior is filled with an insulating material as necessary. It may be made resistant to dirt and rust.
Since the control unit 17 attached to various driving main parts of the antitheft remote device configured in this way is an independent wiring, when a thief tries to destroy the plurality of control units 17 or the relays 16, It is not known which drive main part is attached with the control unit 17 and the number of attachments, and since it is necessary to check each drive main part one by one, it takes time to work, and the effect of preventing theft can be obtained. . Moreover, if the control unit 17 is attached to the internal mounting portion of the drive main portion, it is difficult to find the control unit 17 or the remote device.

There are two methods of supplying power to the control unit 17 attached to the main drive unit of the construction machine. In the first method, the battery (−) line of the construction machine main body is set to body earth. The (+) line directly supplies power to the control unit 17 without passing the engine key 9. In this case, the communication device 14 and the control circuit 15 in each control unit 17 are always in an operating state, and when starting the engine, first, when the button of the portable communication device 13 is pushed and the password is transmitted, the control unit 17 The relay 16 is turned on and closed to be in a standby state when it is received by the communicator 14 and the password is matched by the control circuit 15. At the same time, the buzzer sounds and the operator is notified of the closure by turning on or blinking the LED.
Next, the engine key 9 is turned to the starter position and the engine is started as in a general vehicle. When the engine is stopped by turning off the engine key 9, the relay 16 of the control unit 17 is turned off and the initial standby state is restored. The control circuit 17 performs this by monitoring the voltage at the ON position of the engine key 9 and detecting that the voltage has changed from H to L. Note that a monitoring circuit and wiring for returning the control unit 17 to the initial standby are required. In addition, since current is always consumed, it is necessary to pay attention to the power design because it may cause the battery to run out if left for a long time.

In the second method, power is supplied to each control unit 17 together with the system of the construction machine from the main power line via the ON contact of the engine key 9 from the battery (+) of the construction machine body. The battery (-) should be body grounded. The operation procedure in this case will be described with reference to FIGS. 1 and 4 (a), 4 (b) and 4 (c). First, in FIG. 4 (c), the engine key 9 is inserted and turned to the ON position. When power is supplied to the control unit 17, the control unit 17 performs a power-on reset, enters a predetermined initial state, and enters a reception standby state.
In this state, even if the engine key 9 is turned to the starter ST position, the engine is not started. Next, the power button of the portable communication device 13 shown in FIGS. 1 and 4A and 4B is pressed to turn on the power. Next, press the numeric keypad to enter the password. Finally, when the transmission button is pressed and transmission is performed, the power is automatically turned off. This transmission output is received by the communication device 14 in the control unit 17 in FIG. 4C, and when the control circuit 15 matches the password, the relay 16 is turned on and closed to enter a standby state. At the same time, a buzzer (not shown) is sounded and the driver is informed of closing by turning on or blinking an LED or the like. Next, the engine key 9 is turned to the ST position of the starter and the engine is started as in a general vehicle. In order to stop the engine, when the engine key is turned OFF, the power supply of the control unit 17 and the entire construction machine is also turned OFF. In this case, the current is not always consumed by removing the engine key, and even if the engine is stopped for a long time, there is no cause for the battery running out and there is no worry. Further, wiring for returning the control unit to the initial stage and a monitoring circuit are unnecessary.
As the power supply method, either the first method or the second method can be used.

  Also, when the communication means is radio waves, the exterior plate of the construction machine (part of it) is made of reinforced plastic that can pass radio waves, FRP, etc., so that the communication equipment is incorporated inside this part and remotely operated. Can also hide the presence of remote devices from intruders.

  The anti-theft remote device configured in this manner locks various driving main parts of the construction machine when the construction machine is not used. When the construction machine is used, the personal identification number is sent from the portable communication device 13 approaching the construction machine. The control unit 17 releases the lock state of the drive main part when the passwords are compared and matched.

  As described above, it is also effective for theft prevention to disable the operation of the main driving portion of the arm and the cabin that can form a disadvantageous posture for traveling other than the main driving portion of the driving. In FIG. 1, when the control unit 17 'is in the OFF state, the hydraulic control electromagnetic valve 7' does not work, and the arm system hydraulic cylinder 8 'maintains the posture when stopped. When this posture is unfavorable for traveling, for example, when the arm system hydraulic cylinder 8 ′ is stopped with the bucket stuck in the ground, traveling in this posture is impossible, and theft can be prevented. is there. In this case, theft prevention can be strengthened by setting two personal identification numbers and making the main driving part for traveling and the main driving part for work independently operable.

  Also, if there are places where the control unit is attached to the various drive main parts, for example, when the outer peripheral mounting part is flat or uneven mounting, when manufacturing construction equipment with this drive main part, Even in retrofitting, a space for mounting the control unit is secured, and the installation work becomes easy and easy. It may be installed on the manufacturer production line.

A second embodiment will be described with reference to FIGS.
A difference from the first embodiment is that a communication device 14 in the control unit 17 of the first embodiment is made independent, and a second control unit 21 having a control circuit 15 and a relay 16 (shown by a two-dot chain line in FIG. 3). It is to have constituted.
Similarly to the first embodiment, the control unit 21 is housed in one case and is integrally coupled to the outer peripheral mounting portion of various driving main portions. Although not shown in FIG. 2, the control unit 21 may be installed in a space formed inside the main drive unit.
In FIG. 2, the communication device 14 and the control unit 21 connected to the communication device 14 have their own circuit configurations and can be separated from each other. A representative communication device 14 is set and a plurality of control units 21 are connected. However, the communication device 14 can also be used.
When the code number from the representative communication device 14 matches the numerical value stored in the memory of each control unit 21, the control unit 21 wired independently is turned on, and the main driving units can be operated simultaneously. become.

As an effect at the time of installation, when the control unit 21 is attached to the drive main part, the control unit 21 and the communication device 14 connected to the control unit 21 are separate from each other, so there is no need to consider the communication sensitivity at the attachment position of the communication device 14. The degree of freedom for mounting the control unit 21 is increased. Further, when a plurality of control units 21 are attached, the communication device 14 can be made common, so when using one communication device 14, the communication device 14 is installed at a location having the best reception sensitivity for communication. A clear signal can be transmitted to the plurality of control units 21.
By using the communication device 14 in this way, the number of parts can be reduced and the cost can be reduced.

When using this anti-theft remote device, it is necessary to register the personal identification number in the memory of the control circuit 15 in a predetermined procedure and operation procedure in advance on the receiving side.
The portable communication device 13 can also use a mobile phone.
Further, the operation is confirmed by installing an LED lamp and a buzzer in the driver's seat to notify the driver that the control circuit 15 is activated and the engine is driven by the engine key.

  Since the control unit 21 attached to the main driving unit is wired independently for the antitheft remote device configured in this way, the thief tries to invalidate the functions of the plurality of control units 21 or the relays 16. In this case, it takes time for each one, and the effect of preventing theft can be obtained.

  Further, in the configuration in which one communication device 14 is connected to a plurality of control units 21 as in the second embodiment, since the number of the communication devices 14 is one, the light transmission direction is narrowed down in the straight optical communication, and the communication device 14 An optical sensor (communication device) is incorporated in the optical communication. Also, the parties know the light transmission direction.

  In the configuration of the present invention, when the construction machine is stopped with the engine stopped, the main driving part is made inoperable, and the main driving part is made operable by using a portable communication device. The engine key is used to operate the construction machine. If the electronic on / off function can be incorporated into a structure equipped with a traveling function, not only the construction machine but also ordinary passenger cars and motorcycles, the equipment should be applied. Can do. Furthermore, since centralized management is not performed by the CPU, there are few electronic control disturbances and failure frequencies from the outside, and since simple technology is used, there is versatility.

It is a block diagram of the traveling drive main part which added the antitheft remote device of the construction machine of Example 1 of this invention. It is a block diagram of the traveling drive main part which added the antitheft remote device of the construction machine of Example 2 of this invention. It is the schematic diagram which assembled | attached the control unit to one of the drive main parts of Example 1, 2 of this invention. It is the (a) operation flowchart of a portable communication apparatus of the antitheft device of Example 1, 2 of this invention, (b) The operation time chart of a portable communication apparatus, and (c) The operation flowchart of an antitheft apparatus. It is a block diagram of the driving | running drive main part which added the antitheft device of the conventional construction machine.

Explanation of symbols

13 Portable Communication Device 14 Communication Device 15 Control Circuit 16 Electronic Components 17, 21 Control Unit

Claims (6)

In a device having an engine starter key switch, turn on / off a communication device that receives a password for turning on a control unit from a portable communication device, a control circuit, and an electric circuit of a main drive portion of the device. A control unit including an electronic component set in any one state,
Attach to one or a plurality of outer peripheral mounting parts or internal mounting parts of various driving main parts controlled by the control unit of the device body,
Regardless of the operation of the engine starter key switch, the control unit waits in the OFF state and disables the main driving unit in the state where the engine of the device is in the engine off state, and the control unit is in the portable communication state. When the code number from the machine is received and compared with the code number set in the memory in the control circuit, the control unit is turned on and the one or more drive main parts are made operable. An anti-theft remote device characterized by that. In a device having an engine starter key switch, a control unit including a control circuit and an electronic component that sets an electric circuit of a drive main part of the device to one of ON and OFF states is provided in the control unit of the device body. Attach to one or more outer peripheral mounting parts or internal mounting parts of various driving main parts to be controlled,
Attach a communication device that receives a password for turning on the control unit to the device body,
Regardless of the operation of the engine starter key switch, the control unit waits in the OFF state and disables the main driving unit in the state where the engine of the device is in the engine off state, and the communication device is a portable communication device. The control unit receives the personal identification number from the control circuit, and when the control unit is compared with the personal identification number set in the memory in the control circuit, the control unit is turned on to make the one or more driving main parts operable. An anti-theft remote device characterized by   The various drive main parts of the equipment body include an engine starter, an engine fuel supply pump, an engine fuel adjustment device, an engine intake passage opening and closing device, a hydraulic control solenoid valve of a traveling system hydraulic motor driven by a hydraulic pump directly connected to the engine, The hydraulic control solenoid valve of a cabin rotation system hydraulic motor driven by the hydraulic pump and the hydraulic control solenoid valve of an arm system hydraulic cylinder driven by the hydraulic pump are any one or more. Item 3. The antitheft remote device according to item 1 or 2.   The antitheft remote device according to claim 2, wherein a plurality of control units are provided for one communication device.   In the case of using a plurality of control units of various drive main parts of the device body, at least two types of passwords are assigned to the password set in the memory in the control circuit accommodated in the control unit. The antitheft remote device according to any one of claims 1 to 4.   The anti-theft remote device according to any one of claims 1 to 5, wherein a structure in which a control unit for anti-theft can be installed in advance in various drive main parts.

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