JP2010100100A - Anti-theft device of motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-theft device of a motorcycle capable of adequately controlling an alarm outputting means while reducing the installation space by arranging an acceleration sensor and the alarm outputting means close to each other. <P>SOLUTION: The anti-theft device of the motorcycle for detecting vibration or the like of a motorcycle body in a non-running mode and giving an alarm sound comprises a G sensor 51 for detecting the vibration or the like, a buzzer 50 for outputting the alarm sound, and an alarm device drive control unit 60 for operating a buzzer 50 based on the output of at least the G sensor 51. The G sensor 51 and the buzzer 50 are arranged close to each other. The alarm device drive control unit 60 sets the G sensor 51 in a non-operational state while blowing the buzzer 50, and prohibits the signal output of the G sensor 51. Further, while blowing the buzzer 50, detection of signal input from the G sensor 51 is prohibited. Even further, while blowing the buzzer 50, the buzzer 50 is not operated even when the output of the G sensor 51 is detected. The G sensor 51 and the buzzer 50 are arranged inside a meter unit 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an antitheft device for a motorcycle, and more particularly to an antitheft device for a motorcycle that detects a vibration of a non-traveling vehicle body and generates an alarm sound.

  2. Description of the Related Art Conventionally, there has been known an anti-theft device that includes an acceleration sensor that detects vibration of a vehicle body, and that emits an alarm sound when a signal output exceeds a predetermined value from the acceleration sensor when the vehicle is not in use. Yes. In such an anti-theft device, various measures are taken in order to prevent the alarm sound from being generated in situations other than the situation where the alarm sound is required.

In Patent Document 1, the anti-theft device is prevented from operating due to the vibration of the engine during the warm-up operation by reducing the detection function of the vibration detection sensor from when the engine is started until it starts. An antitheft device for a four-wheeled vehicle is disclosed.
JP-A-8-310344

  By the way, in a motorcycle in which the excess space of the vehicle body is small, the arrangement of the acceleration sensor and the alarm output means constituting the antitheft device is also a problem in the vehicle body layout. And in motorcycles with many exposed parts to the outside, as a configuration that makes it easy to prevent access to the anti-theft device, the acceleration sensor and alarm output means are housed in the same housing etc. and placed inside the exterior parts etc. It is possible to do. However, when such an arrangement is applied, the acceleration sensor and the alarm output unit are arranged close to each other, and when the anti-theft device is activated, the vibration generated by the alarm output unit is detected by the acceleration sensor, There is a possibility that the alarm will continue to sound. In the anti-theft device of Patent Document 1, the problem relating to the arrangement configuration of the acceleration sensor and the alarm output means has not been studied.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and provide a motorcycle antitheft device that can appropriately control the alarm output means while reducing the installation space by arranging the acceleration sensor and the alarm output means close to each other. There is.

  In order to achieve the above object, the present invention provides an antitheft device for a motorcycle that detects vibrations of a vehicle body that is not traveling and emits an alarm sound, an acceleration sensor that detects the vibrations, and the alarm sound. An alarm sound output means for outputting, and a control unit for operating the alarm sound output means based on at least the output of the acceleration sensor, and the acceleration sensor and the alarm sound output means are arranged close to each other, A first feature is that the control unit is configured to disable the signal output by setting the acceleration sensor in a non-operating state while the alarm sound output means is in operation.

  Further, in a motorcycle antitheft device that detects a vibration of a vehicle body that is not traveling and emits an alarm sound, an acceleration sensor that detects the vibration and the like, an alarm sound output means that outputs the alarm sound, and at least the A control unit that activates the alarm sound output means based on the output of the acceleration sensor, the acceleration sensor and the alarm sound output means are arranged close to each other, and the control unit includes the alarm sound output means. There is a second feature in that it is configured to prohibit detection of signal input from the acceleration sensor while the is operated.

  Further, in a motorcycle antitheft device that detects a vibration of a vehicle body that is not traveling and emits an alarm sound, an acceleration sensor that detects the vibration and the like, an alarm sound output means that outputs the alarm sound, and at least the A control unit that activates the alarm sound output means based on the output of the acceleration sensor, the acceleration sensor and the alarm sound output means are arranged close to each other, and the control unit includes the alarm sound output means. A third feature resides in that the operation of the alarm sound output means is prohibited even when the output of the acceleration sensor is detected during the operation.

  A fourth feature is that the acceleration sensor and the alarm sound output means are disposed inside the meter unit.

  Furthermore, a fifth feature is that the acceleration sensor and the alarm sound output means are disposed on a common base in the meter unit.

  According to the first feature, the acceleration sensor constituting the anti-theft device and the alarm sound output means are arranged close to each other, and during operation of the alarm sound output means, the acceleration sensor is set in a non-operating state to output a signal from the acceleration sensor. Because the acceleration sensor and the alarm sound output means are arranged close to each other, even if vibrations such as alarm sound emitted by the alarm sound output means are transmitted to the acceleration sensor, this It is possible to prevent the sound output means from continuing to operate. Further, power consumption during operation of the alarm sound output means can be reduced.

  According to the second feature, since the detection of the signal input from the acceleration sensor is prohibited during the operation of the warning sound output means, the acceleration sensor and the warning sound output means are arranged close to each other, Even when a vibration such as an alarm sound emitted by the alarm sound output means is transmitted to the acceleration sensor, it is possible to prevent the alarm sound output means from continuing to operate.

  According to the third feature, during operation of the alarm sound output means, the operation of the alarm sound output means is prohibited even if the output of the acceleration sensor is detected. Are arranged in close proximity to each other, even when vibrations such as an alarm sound emitted by the alarm sound output means are transmitted to the acceleration sensor, it is possible to prevent the alarm sound output means from continuing to operate. Further, such an effect can be realized only by setting the control unit.

  According to the fourth feature, since the acceleration sensor and the alarm sound output means are arranged inside the meter unit, the anti-theft device can be installed by housing the components of the anti-theft device in the meter unit. Space can be reduced. In addition, since the wiring or the like of the alarm sound output means such as a speaker is housed in the meter unit, it is difficult to access this from the outside of the vehicle body. Furthermore, the degree of freedom of attachment of the antitheft device to the vehicle body can be increased.

  According to the fifth feature, since the acceleration sensor and the alarm sound output means are disposed on a common base in the meter unit, the number of parts can be reduced, the structure can be simplified, and the meter unit can be assembled. Becomes easy.

  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 an antitheft device according to an embodiment of the present invention is applied. FIG. 2 is a partially enlarged view of the motorcycle 1. The motorcycle 1 is a scooter type vehicle in which a pair of left and right footrests 4 is formed in the vehicle width direction with a seat 8 interposed therebetween. The pair of left and right front forks 2 that pivotally support the front wheels WF are pivotally supported on a vehicle body frame (not shown) so as to be steerable by the steering handle 3. A headlight 6 is attached to a front cowl 5 that covers the front of the vehicle body, and a windscreen 7 is disposed above the headlight.

  Behind the footrest floor 4, a front end portion of a power unit 10 integrally configured with an engine and a transmission device is pivotally supported at a rear end portion of a vehicle body frame (not shown). A power unit 10 that rotatably supports a rear wheel WR as a drive wheel is suspended from the vehicle body via a rear cushion 11 at the rear end.

  Referring also to FIG. 2, a meter unit 30 is disposed substantially at the center in the vehicle width direction between the wind screen 7 and the steering handle 3, and audio output speakers 12 are provided on the left and right sides thereof. Is attached. The antitheft device according to the present embodiment is housed inside the meter unit 30.

  FIG. 3 is a front view of the meter unit 30. 4 is a cross-sectional view taken along line AA in FIG. The meter unit 30 is configured such that a meter base 54 and the like are housed in a housing 31a and a colorless and transparent lens 31 is covered from above. The housing 31a and the lens 31 can be formed of a synthetic resin thin plate or the like. And, on the surface side of the meter base 54, that is, the side facing the occupant, various instrument and warning light operating mechanisms 53 are fixed. The meter unit 30 is configured so that it cannot be removed from the vehicle body unless an exterior part or the like surrounding the meter unit 30 is removed.

  An analog display speedometer 32 and an engine tachometer 33 are disposed on the left and right of the center of the meter unit 30, and a liquid crystal display plate 34 indicating the time, travel distance, and the like is disposed therebetween. A cooling water temperature gauge 35 is disposed on the right side of the engine tachometer 33, and a fuel gauge 36 is disposed on the left side of the speedometer 32. Also, on the upper part of the liquid crystal display panel 34, from the left side, an engine warning light 38 that is turned on when an engine system such as a fuel injection device or an ignition device is not normal, a parking brake warning light 39 that is turned on when the parking brake is operated, and will be described later. A communication status indicator 40 that lights or flashes during wireless communication with a portable key, a hydraulic warning lamp 41 that lights when the oil pressure of the engine oil is not normal, and the optical axis of the headlight 6 is set upward. Warning lights composed of a headlamp upward indicator lamp 42 that is lit up are arranged in a row. Further, a pair of left and right direction indicator display lamps 37 are disposed above the water temperature gauge 35 and the fuel gauge 36.

  On the back side of the meter base 54, there is a buzzer 50 as an alarm sound output means, a G sensor 51 as an acceleration sensor for detecting vibration of a non-traveling vehicle body, power supply to instruments and warning lights, and various signal inputs. A connector 52 for connecting the wire bundles and an alarm device drive control unit 60 as a control unit for operating the buzzer 50 when a predetermined condition is established are provided. Note that the buzzer 50 and the G sensor 51 may have a well-known configuration using, for example, a speaker using a coil and a sensor using a piezoelectric element. It should be noted that the types and forms of the meters and warning lights arranged on the surface side of the meter unit 30 and the shape of the housing and the lens can be variously modified. For example, the lens is shaped so as to cover only the meters. In addition, the warning lights may be exposed to the outside.

  The anti-theft device according to the present embodiment, for example, when the acceleration exceeding a predetermined value is detected from the G sensor 51 in a parking state where the occupant is away from the vehicle, the buzzer 50 is assumed to have been accessed by a third party. It is configured to sound. In the present embodiment, the buzzer 50 and the G sensor 51 are arranged close to each other in the same housing, thereby reducing the installation space for the antitheft device and reducing the length of wiring connected to the buzzer 50 and the G sensor 51. Shorten as much as possible to increase resistance to external access.

  However, when such a proximity arrangement is applied, when the buzzer 50 starts blowing, vibration due to the blowing sound is detected by the acceleration sensor 51 and the buzzer 50 may continue to operate. Therefore, the anti-theft device according to the present invention is configured such that appropriate control is possible even while the buzzer 50 is sounding by setting the alarm device drive control unit 60. Hereinafter, with reference to FIG. 5 thru | or FIG. 10, the structure of the antitheft device which concerns on 1st thru | or 3rd embodiment of this invention is demonstrated, respectively. In the present embodiment, “buzzer 50 and G sensor 51 are arranged close to each other” means that both are arranged within a range in which vibration when buzzer 50 blows affects the output signal of G sensor 51. Equivalent to.

  FIG. 5 is a block diagram showing the configuration of the anti-theft device according to the first embodiment of the present invention. FIG. 6 is a flowchart (1) showing a control flow of the antitheft device according to the embodiment. The same reference numerals as those described above denote the same or equivalent parts. A radio wave receiver 62 provided in the motorcycle 1 receives a radio wave transmitted from the portable key 61 via the receiving antenna 65. The portable key 61 is provided with a set button and an unset button for the anti-theft device, and when one of the buttons is pressed within the communicable range with the vehicle, wireless communication with the vehicle body side is started. Authentication is started whether 61 is unique to the vehicle. When this authentication is correctly executed, a set operation for operating the antitheft device or an unset operation for canceling the operation is executed.

  On the other hand, when the engine is stopped, the vehicle gets off the vehicle, and the set button of the portable key 61 is pressed, it is determined that the parking state, that is, the state where the theft detection is required, and the theft detection start setting unit 63 sets the theft detection mode. Be started. Note that the communication status indicator lamp 40 in the meter unit 30 blinks at least once in order to notify the occupant that the wireless communication with the vehicle body has been correctly performed as the set button and the unset button are pressed. The start condition of the theft detection mode can be set when the stand device that makes the vehicle stand alone when the vehicle is stopped is in use and the set button of the portable key 61 is pressed.

  Further, the output signal of the G sensor 51 is input to the theft determination means 64. If the output signal of the G sensor 51 exceeds a predetermined value during this theft detection mode, it is determined that an access by a third party has been performed. Then, the alarm device drive control unit 60 is notified that the alarm is required. The alarm device drive control unit 60 is configured to receive a command from the theft determination means 64 and sound the buzzer 50 and blink the communication status indicator 40. Note that the operation with the sound of the buzzer 50 is not limited to the communication status indicator 40, and for example, various warning lights in a meter, vehicle lights, an audio device, and the like may be used. Furthermore, it is good also as a structure which act | operates only the buzzer 50 at the time of a buzzer sounding.

  As shown in FIG. 4, in the present embodiment, the theft detection start setting unit 63 and the theft determination means 64 are provided in the ECU (not shown), and the alarm device drive control unit 60 is provided in the meter unit 30. However, these arrangements can be variously modified. For example, the alarm device drive control unit 60 is provided inside the ECU, or the theft detection start setting unit 63 and the theft determination means 64 are connected to the meter unit 30. It may be provided inside.

  The antitheft device according to the present embodiment is characterized in that the alarm device drive control unit 60 includes a G sensor operation stop setting unit 60a. The G sensor operation stop setting means 60 a has a function of prohibiting signal output from the G sensor 51 by putting the G sensor 51 in a non-operating state while the buzzer 50 is sounding.

  FIG. 6 is a flowchart showing a control flow of the antitheft device according to the first embodiment. This flowchart is executed within the theft determination means 64. In step S10, the alarm device drive control unit 60 determines whether or not the buzzer 50 is blowing. If a negative determination is made in step S10, the process proceeds to step S20, the power of the G sensor 51 is turned on, and the output signal of the G sensor 51 is detected by the theft determination means 64 in step S30. In the following step S40, a theft detection process is executed by the theft determination means 64, and in the subsequent step S50, the power supply of the G sensor 51 is turned off and a series of control ends.

  The anti-theft device according to the present embodiment is configured to connect / disconnect the power source of the G sensor 51 at a predetermined cycle (for example, every 15 seconds) in order to reduce power consumption during the anti-theft mode. Steps S20, 30, 40, and 50 described above are normal control flows that are repeatedly performed during the operation of the theft detection mode. If the output signal of the G sensor 51 exceeds a predetermined value during the execution of step S40, the buzzer 50 will sound.

  On the other hand, if an affirmative determination is made in step S10, that is, if the buzzer 50 is sounding, a series of controls are terminated without passing through the flow of steps S20 to S50. This is because when the buzzer 50 is sounding, the G sensor operation stop setting means 60a avoids steps S20 to S50 in which the G sensor 51 is turned on, that is, the G sensor 51 is inactivated. This is because the signal output of the G sensor 51 is prohibited. Note that the non-operating state of the G sensor 51 may be a state in which predetermined control is executed so as not to output a sensor signal in addition to a power-off state. According to such setting, it is possible to prevent the operation of the buzzer 50 from being continued by the G sensor 51 continuously detecting the vibration caused by the buzzer 50. Also, by executing such control, it is possible to place the buzzer 50 and the G sensor 51 close to the meter unit 30 and reduce the installation space for the anti-theft device. Further, when the G sensor 51 is turned off to be in a non-operating state, it is possible to reduce power consumption while the buzzer 50 is blowing. Note that the buzzer 50 that has once started sounding can be stopped by operating the portable key 61. Further, a timer (not shown) may be provided in the alarm device drive control unit 60, and the timer may be set so that sounding and pause are repeated at predetermined intervals. Furthermore, in steps S20 and S50, instead of turning on / off the power supply of the G sensor 51, the operation mode of the G sensor 51 is changed to the normal mode and other modes (non-operation mode, low current consumption operation mode, standby mode, etc.). You may make it switch between.

  FIG. 7 is a block diagram showing the configuration of the anti-theft device according to the second embodiment of the present invention. FIG. 8 is a flowchart (2) showing the flow of control of the antitheft device. The same reference numerals as those described above denote the same or equivalent parts. The present embodiment is characterized in that a G sensor output detection prohibition setting unit 60b is provided inside the alarm device drive control unit 60. The G sensor output detection prohibition setting unit 60 b has a function of preventing the alarm device drive control unit 60 from receiving the output signal of the G sensor 51 while the buzzer 50 is sounding. Hereinafter, detailed description of the same parts as those of the first embodiment is omitted.

  Referring to the flowchart of FIG. 8, in step S20, the power supply of the G sensor 51 is turned on, and in step S30, the output signal of the G sensor 51 is detected by the theft determination means 64. In a succeeding step S35, it is determined whether or not the buzzer 50 is sounding. If a negative determination is made in step S35, the process proceeds to step S40, which is a normal flow, and a theft detection process is executed. In step S50, the output of the G sensor 51 is turned off, and the series of controls ends.

  On the other hand, if an affirmative determination is made in step S35, that is, if the buzzer 50 is sounding, step S40 is skipped, the output of the G sensor 51 is turned off in step S50, and the series of controls ends. According to such a setting, when it is determined that the buzzer 50 is sounding, the theft detection process is omitted so that the theft determination unit 64 does not detect the output signal of the G sensor 51. Can be prevented from continuing to operate.

  FIG. 9 is a block diagram showing the configuration of the anti-theft device according to the third embodiment of the present invention. FIG. 10 is a flowchart (3) showing the flow of control of the antitheft device. The same reference numerals as those described above denote the same or equivalent parts. In the present embodiment, the alarm device drive control unit 60 is provided with a theft determination clear means 60c, and during the buzzer 50, even if the output signal from the G sensor 51 exceeds a predetermined value, the theft determination means 64 Is characterized in that it is set so as not to be considered as an operating condition of the alarm device. Hereinafter, detailed description of the same parts as those in the first and second embodiments will be omitted.

  Referring to the flowchart of FIG. 10, in step S20, the G sensor 51 is powered on. In the subsequent step S30, the output signal of the G sensor 51 is detected by the theft determination means 64, and a theft detection process is executed in step S40. In step S45, it is determined whether or not the buzzer 50 is blowing. If a negative determination is made in step S45, the process proceeds to step S50, which is a normal flow, the power of the G sensor 51 is turned off, and the series of controls is terminated.

  On the other hand, if an affirmative determination is made in step S45, that is, it is determined that the buzzer 50 is blowing, the process proceeds to step S46, and the theft detection flag is cleared. This flag is established because the output of the G sensor 51 exceeds a predetermined value in the theft detection process of step S40. When the flag is cleared in step S46, the power of the G sensor 51 is turned off while the buzzer 50 is sounding, and a series of control is finished.

  According to such setting, when it is determined that the buzzer 50 is sounding, the flag that is established when the output signal of the G sensor 51 exceeds a predetermined value is cleared. Even if the output signal of the G sensor 51 exceeds a predetermined value due to this vibration, the alarm device drive control unit 60 does not issue a command to sound the buzzer 50. Thereby, it is possible to prevent the buzzer 50 from continuously sounding.

  As described above, according to the anti-theft device according to the present invention, the G sensor that detects the vibration applied to the vehicle body and the buzzer that operates when the output signal of the G sensor exceeds a predetermined value are arranged close to each other. While the buzzer is sounding, the buzzer is prohibited from sounding based on the output signal of the G sensor, so that the vibration of the buzzer affects the G sensor and prevents the buzzer from continuing. The installation space for the anti-theft device can be reduced.

  The structure and arrangement of the G sensor and the buzzer, the arrangement and configuration of the meter unit, etc. are not limited to the above-described embodiment, and various changes can be made. For example, an anti-theft device such as a G sensor and a buzzer may be housed in a dedicated housing and disposed at any location on the vehicle body. The anti-theft device according to the present invention is not limited to motorcycles, and may be applied to tricycles, four-wheel vehicles, and the like.

1 is a partially enlarged view of a motorcycle to which an antitheft device according to an embodiment of the present invention is applied. 1 is a partially enlarged view of a motorcycle 1. FIG. It is a front view of a meter unit. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a block diagram which shows the structure of the antitheft device which concerns on 1st Embodiment of this invention. It is a flowchart which shows the flow of control of the antitheft device which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the antitheft device which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the flow of control of the antitheft device which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the structure of the antitheft device which concerns on 3rd Embodiment of this invention. It is a flowchart which shows the flow of control of the antitheft device which concerns on 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 3 ... Steering handle, 7 ... Windproof screen, 30 ... Meter unit, 40 ... Communication status indicator, 50 ... Buzzer (alarm sound output means), 51 ... G sensor (acceleration sensor), 60 ... Alarm Device drive control unit (control unit), 61 ... mobile key, 60a ... G sensor output detection prohibition setting means, 60b ... G sensor operation stop setting means, 60c ... theft determination clear means, 62 ... radio wave reception section, 63 ... theft detection Start setting unit, 64 ... theft determination means

Claims (5)

In an antitheft device for a motorcycle that detects vibrations of a vehicle body that is not traveling and emits an alarm sound,
An acceleration sensor for detecting the vibration and the like;
An alarm sound output means for outputting the alarm sound;
A controller that operates the alarm sound output means based on at least the output of the acceleration sensor;
The acceleration sensor and the alarm sound output means are arranged close to each other,
A theft prevention device for a motorcycle, wherein the control unit is configured to prohibit the signal output by setting the acceleration sensor in a non-operating state while operating the alarm sound output means. In an antitheft device for a motorcycle that detects vibrations of a vehicle body that is not traveling and emits an alarm sound,
An acceleration sensor for detecting the vibration and the like;
An alarm sound output means for outputting the alarm sound;
A controller that operates the alarm sound output means based on at least the output of the acceleration sensor;
The acceleration sensor and the alarm sound output means are arranged close to each other,
A theft prevention device for a motorcycle, wherein the control unit is configured to prohibit detection of a signal input from the acceleration sensor while the alarm sound output means is operated. In an antitheft device for a motorcycle that detects vibrations of a vehicle body that is not traveling and emits an alarm sound,
An acceleration sensor for detecting the vibration and the like;
An alarm sound output means for outputting the alarm sound;
A controller that operates the alarm sound output means based on at least the output of the acceleration sensor;
The acceleration sensor and the alarm sound output means are arranged close to each other,
The automatic control unit is configured to prohibit the operation of the alarm sound output unit even when the output of the acceleration sensor is detected while the control unit operates the alarm sound output unit. Anti-theft device for motorcycles.   The antitheft device for a motorcycle according to any one of claims 1 to 3, wherein the acceleration sensor and the warning sound output means are disposed inside a meter unit.   5. The antitheft device for a motorcycle according to claim 4, wherein the acceleration sensor and the alarm sound output means are disposed on a common base in the meter unit.

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