JP2008179274A - Vehicular anti-theft device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular anti-theft device capable of promoting a vehicle rider to wear a helmet for riding a motorcycle. <P>SOLUTION: A vehicle body side immobilizer unit 50 to be mounted on a motorcycle 1 receives a signal including an ID code to be transmitted from a helmet side immobilizer unit 40 mounted on a helmet 30. An engine control unit 12 for performing the drive control of an engine 8 of the motorcycle 1 permits the start of the engine when the ID code is collated correctly. The helmet side immobilizer unit 40 and a loop antenna 45 are provided inside a hat body of the helmet 30. Further, the vehicle body side immobilizer unit when riding off the motorcycle is provided in a vicinity of the storage position of the helmet 30, and when the radio communication is performed between the unit and the helmet side immobilizer unit 40 and the ID code is collated correctly, the start of the engine 8 is prohibited. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle antitheft device, and more particularly to a vehicle antitheft device that can prompt a vehicle occupant to wear a riding helmet.

  Conventionally, the main key of a motorcycle or a four-wheeled vehicle is provided with a chip that stores an ID code unique to each vehicle, and the ID code is verified when the key is inserted into the key cylinder on the vehicle body side. There is known an immobilizer in which the engine start is electrically prohibited if it is not correctly verified. According to this immobilizer, the engine cannot be started unless it is a proper key for each vehicle, so that it is possible to prevent the use of a third party by a combined key that duplicates only the shape.

  Patent Document 1 discloses a configuration of an immobilizer in which a response signal transmitted from a communication device provided in a main key is received by an antenna disposed around a key hole of a key cylinder on a vehicle body side. Has been.

Further, Patent Document 2 states that the engine can be started only by collating the ID code by communication between the main key and the communication device on the vehicle body side without providing a physical key part in the main key in the communication device. The structure of the immobilizer made to become is disclosed.
JP 2003-127833 A Japanese Patent Laid-Open No. 2004-114838

  However, Patent Documents 1 and 2 disclose nothing about obtaining a secondary effect other than the anti-theft effect by disposing the communication device provided in the main key in a place other than the main key. There was no suggestion.

  An object of the present invention is to provide a vehicle antitheft device that solves the above-described problems of the prior art and can prompt a vehicle occupant to wear a riding helmet.

  In order to achieve the above-described object, the present invention includes a vehicle body side communication device attached to a vehicle body of a motorcycle, a helmet side communication device attached to a riding helmet, and a control unit that controls operation of the power source of the motorcycle. The vehicle body side communication device receives a signal including an identification code unique to the motorcycle and transmitted from the helmet side communication device, and the control unit correctly verifies the identification code. Therefore, the first feature is that the power source is allowed to start.

  In addition, the helmet side communication device has a second feature in that it is installed in a cap body of the riding helmet.

  A third feature is that a loop antenna connected to the helmet-side communication device is provided in the cap body of the riding helmet.

  The vehicle-side communication device for getting off the vehicle is attached outside the communicable range between the vehicle-body side communication device and the helmet-side communication device, and the control unit has the vehicle-side communication device for getting off the vehicle It is configured to prohibit starting of the power source when a signal including an identification code unique to the motorcycle transmitted from the helmet side communication device is received and the identification code is correctly verified. There are four features.

  Furthermore, the vehicle body side communication device is attached at a position where the vehicle can communicate with the helmet side communication device when an occupant wearing the riding helmet gets on the vehicle.

  The fifth feature is that the vehicle body side communication device for getting off the vehicle is attached at a position where the vehicle helmet side communication device can communicate with the helmet side communication device when the riding helmet is disposed at an accommodation position provided in the vehicle body. There is.

  According to the first aspect of the invention, the vehicle body side communication device receives a signal including an identification code unique to the motorcycle transmitted from the helmet side communication device, and the control unit is powered by correctly verifying the identification code. Since the starting of the power source is configured to be permitted, a riding helmet is required to start the engine, and it is possible to prompt the motorcycle occupant to wear the riding helmet. Further, when the passenger gets off the motorcycle with the riding helmet, the start of the engine is not permitted, so that the anti-theft effect when the motorcycle is parked can be obtained. Furthermore, since the communication device is installed in a large helmet as compared with a small key, it is possible to reduce the possibility of accidentally losing the communication device.

  According to the second invention, since the helmet-side communication device is installed in the cap body of the riding helmet, a third party is attached to the helmet-side communication device as compared with the configuration attached to the outside of the cap body. The possibility of accessing can be greatly reduced.

  According to the third invention, since the loop antenna connected to the helmet-side communication device is provided in the cap body of the riding helmet, the transmission / reception strength of the communication antenna is increased by utilizing the shape of the cap body. Will be able to. Thereby, it is possible to further improve the reliability of wireless communication with the vehicle body side communication device.

  According to the fourth aspect of the present invention, the vehicle-side communication device for getting off the vehicle attached to the outside of the communicable range between the vehicle-side communication device and the helmet-side communication device is provided. When the apparatus receives a signal including an identification code unique to the motorcycle transmitted from the helmet side communication device and the identification code is correctly verified, the start of the power source is prohibited. By disposing the riding helmet within the communication range of the hourly vehicle body side communication device, it is possible to obtain the antitheft effect of the motorcycle even when leaving the riding helmet while leaving the vehicle body.

  According to the fifth aspect of the present invention, the vehicle body side communication device is attached at a position where communication with the helmet side communication device can be performed when an occupant wearing a ride helmet rides on the vehicle. When the riding helmet is installed in the storage position provided in the vehicle, it is attached at a position where it can communicate with the helmet side communication device. The anti-theft effect of a motorcycle can be obtained even when the riding helmet is stored in a proper storage position and the passenger gets off the vehicle.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a motorcycle 1 to which a vehicle antitheft device according to an embodiment of the present invention is applied. In front of the vehicle body frame 2 of the motorcycle 1, a pair of left and right front forks 3 on which a front wheel WF is rotatably supported are supported by a handle 4 so as to be steerable. A front cowl 5 as a windshield device to which a meter unit 6 is attached is disposed in front of the handle 4. An engine 8 as a power source of the motorcycle 1 is mounted on the body frame 2, and a fuel tank 7 is disposed above the engine 8. A seat 10 on which an occupant 100 is seated is attached to the rear of the fuel tank 7, and a rear cowl 11 is disposed below the seat 10. A swing arm 9 that rotatably supports a rear wheel WR that is a drive wheel is swingably attached to the rear side of the vehicle body frame 2.

  The vehicle antitheft device according to the present invention includes a helmet side immobilizer unit 40 as a helmet side communication device installed in the helmet 30 worn by the occupant 100 when riding, and a vehicle body side communication device attached to the upper part of the handle 4. The vehicle body side immobilizer unit 50 and an engine control unit (see FIG. 3) for controlling the operation of the engine 8 are configured. In the vehicle antitheft device according to the present embodiment, when the occupant 100 operates a main switch (not shown) as a main power source to start the engine 8, a communication radio wave is transmitted from the vehicle body side immobilizer unit 50. A response signal is transmitted from the helmet-side immobilizer unit 40 that has received the radio wave. The vehicle body side immobilizer unit 50 can be configured integrally with a key cylinder provided on the vehicle body side, or can be disposed inside the front cowl 5 or the meter unit 6.

  FIG. 2 is a perspective view of the helmet 30. The full-face helmet 30 includes a cap body 31 that covers the head and chin of the occupant 100 and a colorless or colored transparent shield 32 that is attached to the cap body 31 so as to be freely opened and closed. A helmet-side immobilizer unit 40 that stores an identification code unique to the motorcycle 1 and transmits a response signal including the identification code to the vehicle body-side immobilizer unit 50 is provided in the forehead portion of the cap body 31. A loop antenna 45 as a communication antenna is disposed around the antenna. Note that the communication antenna may be configured to be wound along the outer peripheral surface of the cap body 31 like the loop antenna 46 so as to further increase the transmission / reception strength.

  Moreover, the helmet body of the helmet is generally composed of a shell as a thin outer shell formed of resin or the like, a buffer member formed of foamed polystyrene or the like, and an interior member formed of fiber or the like. The side immobilizer unit 40 and the loop antenna 45 can be attached so as to be embedded in a shell or a buffer member. According to this configuration, it is possible to greatly reduce the possibility of a third party accessing the helmet-side immobilizer unit 40. The helmet-side immobilizer unit 40 may be provided with a communication power source such as a rechargeable battery.

  FIG. 3 is a block diagram showing the configuration of the vehicle antitheft device according to this embodiment. The same reference numerals as those described above denote the same or equivalent parts. The helmet-side immobilizer unit 40 includes an ID code storage unit 41 that stores an ID code as an identification code for recognizing each vehicle, and a transmission / reception unit 42 that transmits a response signal including the ID code via the loop antenna 45. Including. Whether the vehicle body side immobilizer unit 50 is a legitimate ID code by collating the ID code included in the received signal with the transmission / reception unit 52 that performs wireless communication with the helmet side immobilizer unit 40 via the communication antenna 53. An ID code authenticating unit 51 for determining whether or not is included. Then, the collation result by the ID code authenticating unit 51 is transmitted to the engine control unit 12 that controls the operation of the engine 8. The vehicle body side immobilizer unit 50 can also be configured integrally with the engine control unit 12.

  As described above, in the vehicle antitheft device according to the present embodiment, when the occupant 100 operates the main switch as the main power source to start the engine 8 of the motorcycle 1, communication radio waves are generated from the vehicle body side immobilizer unit 50. A response signal including an ID code is transmitted from the helmet-side immobilizer unit 40 that is transmitted and receives this communication radio wave. When the ID code authentication unit 51 determines that the ID code included in the response signal is a regular ID code, a start permission signal is transmitted to the engine control unit 12 and the engine 8 can be started. It becomes a state. If the ID code is not correctly verified, the engine control unit 12 is prohibited from starting the engine 8 by not turning on the main power supply or driving the ignition device or the fuel injection device. The Rukoto.

  Moreover, since the communicable range between the helmet side immobilizer unit 40 and the vehicle body side immobilizer unit 50 is set to a predetermined range (for example, a radius of 2 m), when the helmet 30 does not exist within the predetermined range, The engine 8 cannot be started. Therefore, by getting off the motorcycle 1 with the helmet 30, it is possible to prevent the engine 8 from being started by a third party other than the occupant and to prompt the occupant 100 to wear the helmet 30 when getting on. In addition, since the communication device is built in a large helmet as compared with a small key, it is possible to reduce the possibility that the communication device is accidentally lost. The ID code stored in the ID code storage unit 41 uses a rolling code method that prevents a third party from decoding the ID code by using a different ID code each time it is locked or unlocked. Can be applied.

  FIG. 4 is a perspective view of the motorcycle 1 to which the vehicle antitheft device according to the second embodiment of the present invention is applied. The same reference numerals as those described above denote the same or equivalent parts. The present embodiment is characterized in that a vehicle body side immobilizer unit 60 for getting off is provided in addition to the vehicle body side immobilizer unit 50 attached in the vicinity of the handle 4. The vehicle body side immobilizer unit 60 for getting off the vehicle according to the present embodiment is disposed in the lower part of the seat 10. When the helmet 30 is disposed at a predetermined storage position by using the helmet holder 13, the helmet Communication with the helmet side immobilizer unit (not shown) in 30 is possible. When the vehicle body side immobilizer unit 60 for getting off the vehicle is correctly collated with the ID code included in the response signal from the helmet 30, the engine control unit 12 (see FIG. 3) prohibits the engine 8 from starting. Is configured to communicate.

  With the configuration described above, when the occupant wears the helmet 30 and rides, the helmet 30 exists in the communicable range 50a of the vehicle body side immobilizer unit 50, so that the engine 8 can be started and the helmet can be started. When the vehicle 30 gets off with the vehicle 30 fixed to the vehicle body, the start of the engine 8 is prohibited because the helmet 30 exists in the communicable range 60a of the vehicle body side immobilizer unit 60 for the vehicle getting off. That is, even when the helmet 30 is fixed to the vehicle body and gets off, starting of the engine is prohibited and a high antitheft effect can be obtained. Note that the communicable ranges 50a and 60a can be arbitrarily set as long as they do not interfere with each other.

  FIG. 5 is a side view of a motorcycle 70 to which a vehicle antitheft device according to a modification of the second embodiment of the present invention is applied. In the scooter type motorcycle 70, a luggage space 72 capable of accommodating luggage such as helmets 38 and 39 is formed below a seat 71 that can be opened and closed with the front side of the vehicle as an axis. When the vehicle-side immobilizer unit 60 for getting off the vehicle is disposed inside the vehicle body, when the helmet 38 or the helmet 39 is stored in a predetermined storage position as shown in the figure when the vehicle 1 gets off the motorcycle 1. Then, wireless communication with the helmet-side immobilizer unit (not shown) is performed, and the engine start can be prohibited.

  FIG. 6 is a perspective view of a helmet used in the vehicle antitheft device according to the third embodiment of the present invention. The helmet side immobilizer unit 40 may be installed in a jet type or half type helmet in addition to the full face type described above. In the present embodiment, a storage space 37 having a lockable openable / closable lid 36 is provided in the rear head portion of the cap body of the helmet 35 that is a jet type, and the helmet side immobilizer unit 40 is detachably stored therein. Has been. According to such a configuration, the same immobilizer function can be obtained by moving the helmet-side immobilizer unit 40 even when the helmet is replaced in a new tone or the like. The storage space 37 may be formed so that the helmet-side immobilizer unit 40 can be detached from the interior member side of the helmet 35.

  The vehicle antitheft device as described above can be applied to various vehicles such as an ATV that is a saddle-ride type vehicle and an electric vehicle that uses a power source as a motor. Further, the arrangement positions of the helmet side and vehicle body side immobilizer units can be variously modified according to the form of the helmet and the vehicle.

1 is a side view of a motorcycle to which a vehicle antitheft device according to an embodiment of the present invention is applied. It is a perspective view of the helmet to which the antitheft device for vehicles concerning this embodiment is applied. It is a block diagram which shows the structure of the vehicle antitheft device which concerns on this embodiment. It is a perspective view of a motorcycle to which a vehicle antitheft device according to a second embodiment of the present invention is applied. FIG. 6 is a side view of a motorcycle to which a vehicle antitheft device according to a modification of the second embodiment of the present invention is applied. It is a perspective view of the helmet to which the vehicle antitheft device which concerns on 3rd Embodiment of this invention is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 8 ... Engine (power source), 12 ... Engine control part (control part), 30 ... Helmet, 40 ... Helmet side immobilizer unit (helmet side communication apparatus), 41 ... ID code memory | storage part, 42 ... Transmission / reception 45, loop antenna (communication antenna), 50 ... vehicle body side immobilizer unit (vehicle body side communication device), 51 ... ID code authentication unit, 52 ... transmission / reception unit, 53 ... communication antenna

Claims (5)

A vehicle body side communication device attached to the motorcycle body;
A helmet-side communication device attached to the riding helmet;
A control unit that controls operation of a power source of the motorcycle,
The vehicle body side communication device receives a signal including an identification code unique to the motorcycle transmitted from the helmet side communication device,
The anti-theft device for vehicles, wherein the control unit is configured to permit starting of the power source when the identification code is correctly verified.   2. The vehicle antitheft device according to claim 1, wherein the helmet side communication device is installed in a cap body of the riding helmet.   The antitheft device for vehicles according to claim 1 or 2, wherein a loop antenna connected to the helmet side communication device is provided in a cap body of the riding helmet. The vehicle body side communication device for getting off the vehicle attached to the outside of the communicable range of the vehicle body side communication device and the helmet side communication device,
When the vehicle body side communication device for getting off the vehicle receives a signal including an identification code unique to the motorcycle transmitted from the helmet side communication device and the identification code is correctly verified, The vehicle antitheft device according to any one of claims 1 to 3, wherein the power source is prohibited from starting. The vehicle body side communication device is attached to a position where communication with the helmet side communication device is possible when an occupant wearing the riding helmet gets on the vehicle.
The vehicle body side communication device for getting off the vehicle is attached to a position where the vehicle body side communication device can communicate with the helmet side communication device when the riding helmet is disposed in a housing position provided in the vehicle body. Item 5. The vehicle antitheft device according to item 4.

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