PROBLEM TO BE SOLVED: To provide a load sensor which can accurately detect a load using a conductive elastic member.SOLUTION: In a seating sensor 30, a conductive pad 38 is arranged between electrode parts 34, 36. In the electrode part 34, an insulation sheet 42 is arranged between an electrode thread 50 sewn into a basis material 38 having elasticity, and the conductive pad 38. The insulation sheet 42 is in a form of mesh with openings aligned therein. The conductive pad 38 is compressed by input of a load, and the electrode thread 50 makes contact with the conductive pad 38 via the openings of the insulation sheet 42. When the load is increased, displacement of the conductive pad 38 increases, and a contact area between the conductive pad 38 and the electrode thread 50 increases. In this way, since an electrical resistance value between the electrode parts 34, 36 largely changes according to the load being input, the seating sensor 30 can accurately detect the load being input from the electrical resistance value.SELECTED DRAWING: Figure 3

    【課題】導電性弾性部材を用いて荷重を精度良く検知できる荷重センサを提供する。【解決手段】着座センサ30は、電極部34、36間に導電性パッド38が配置されており、電極部34は、伸縮性を有する素地38に縫い込まれた電極糸50と導電性パッド38との間に絶縁シート42が配置されている。絶縁シート42は、開口部が配列されたメッシュ状とされており、荷重が入力されることで、導電性パッド38が圧縮されると共に、電極糸50が絶縁シート42の開口部を介して導電性パッド38に接触される。また、荷重が増加すると、導電性パッド38の変位が増加すると共に、導電性パッド38と電極糸50との接触面積が増加する。これにより、着座センサ30は、入力された荷重に応じて電極部34、36間の電気抵抗値が大きく変化するので、電気抵抗値から入力された荷重を高精度で検出できる。【選択図】図3


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    Title :

    LOAD SENSOR, LOAD DETECTION DEVICE, AND SEATING SHEET


    Additional title:

    荷重センサ、荷重検出装置及び着座用シート


    Contributors:

    Publication date :

    2018-02-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / 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 / G01G Wägen , WEIGHING



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