PROBLEM TO BE SOLVED: To provide a tire air pressure alarm device for a vehicle capable of achieving enhancement of both of longevity and detection accuracy.SOLUTION: A tire air pressure alarm device 1 for a vehicle V comprises a wheel side unit 20, disposed inside a tire 4, including: a pressure sensor 21 for detecting a pressure of air in the tire 4; a temperature sensor 22 for detecting a temperature of the air in the tire 4; a power generating part 23 for converting energy associated with a rolling motion of the tire 4 to generate electric power; a power storage part 24 for storing electric power generated by the power generating part 23; and a transmission part 25 for transmitting information detected by the sensors 21 and 22 to a vehicle body side unit 10. The air pressure sensor 21 is exposed to a tire air chamber 6, while the power generating part 23 is embedded in an inner wall 4a of the tire 4 so as to be more isolated from the tire air chamber 6 than the air pressure sensor 21. The power storage part 24 is arranged so as to be adjacent to the air pressure sensor 21 and the power generating part 23 in an axial direction of the tire 4.SELECTED DRAWING: Figure 3

    【課題】長寿命化と検出精度とを両立することができる車両のタイヤ空気圧警報装置を提供する。【解決手段】タイヤ4の空気圧力を検出する圧力センサ21と、タイヤ4の空気温度を検出する温度センサ22と、タイヤ4の転動に伴うエネルギを変換して発電する発電部23と、発電部23が発電した電力を蓄積する蓄電部24と、センサ21,22によって検出された情報を車体側ユニット10に送信する送信部25とを備えた車体側ユニット20がタイヤ4内部に配設された車両Vのタイヤ空気圧警報装置1において、圧力センサ21がタイヤ空気室6に露出されると共に発電部23が圧力センサ21よりもタイヤ空気室6から離隔するようにタイヤ4の内壁部4aに埋設され、蓄電部24が圧力センサ21と発電部23にタイヤ4の軸心方向において隣接するように配設されている。【選択図】 図3


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    Title :

    TIRE AIR PRESSURE ALARM DEVICE FOR VEHICLE


    Additional title:

    車両のタイヤ空気圧警報装置


    Contributors:

    Publication date :

    2017-09-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / G08C Übertragungssysteme für Messwerte, Regel-, Steuer- oder ähnliche Signale , TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS



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