The invention discloses an automobile seat position sensor which comprises a shell, a gear reducing mechanism arranged in the shell, a magnet, a Hall chip and a PCB, and the shell is formed by assembling a front shell body and a rear shell body; the gear reducing mechanism is composed of an input gear, a middle transmission gear and an output gear, the input gear and the middle transmission gear are duplicate gears, a large gear in the input gear is used for being meshed with a gear on an automobile seat, and a small gear in the input gear is meshed with a large gear in the middle transmissiongear. The output gear is meshed with the small gear in the intermediate transmission gear; the Hall chip is welded to a PCB printed with a conversion circuit, the PCB is fixed to the inner side faceof the rear shell body through bolts, and three signal output lines are further welded to the PCB. And the magnet is fixed on the output gear and faces the Hall chip at a short distance without contacting with the Hall chip. The sensor is simple and compact in structure, high in output precision, stable in signal and capable of recognizing absolute position information of the automobile seat.

    本发明公开了一种汽车座椅位置传感器,包括外壳、设置在外壳内的齿轮减速机构、磁铁、霍尔芯片及PCB板,所述外壳由前壳体和后壳体组装而成;所述齿轮减速机构由输入齿轮、中间传动齿轮和输出齿轮组成,其中,输入齿轮与中间传动齿轮采用的是双联齿轮,输入齿轮中的大齿轮用于与汽车座椅上的齿轮相啮合,小齿轮与中间传动齿轮中的大齿轮相啮合,输出齿轮与中间传动齿轮中的小齿轮相啮合;所述霍尔芯片焊接在印有转换电路的PCB板上,所述PCB板通过螺栓固定在后壳体的内侧面,在PCB板上还焊接有三根信号输出线;所述磁铁固定在输出齿轮上,近距离面对霍尔芯片但互不接触。本发明结构简单且紧凑,输出精度高且信号稳定,可以识别汽车座椅的绝对位置信息。


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    Title :

    Automobile seat position sensor


    Additional title:

    一种汽车座椅位置传感器


    Contributors:
    MAO SHIWEN (author) / CHEN CHANGLIN (author) / YU SHUQIAO (author)

    Publication date :

    2021-02-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet



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