The invention provides a bicycle rotation speed detector with a waterproof function. The bicycle rotation speed detector comprises a shell, a shaft, a first shell, a second shell, a light transceiving module and a waterproof gasket, wherein the shaft is rotatably mounted in the shell and provided with a coupling end protruding out of the shell, the first shell is provided with a sleeving part which is peripherally provided with a rotary shaft passage, and the coupling end rotatably penetrates the rotary shaft passage; the second shell is fixed at a position, close to the coupling end, of the shell, the second shell is provided with an inner lateral wall used for peripherally disposing a sleeving passage, and the sleeving part is disposed in the sleeving passage; the light transceiving module is disposed between the first shell and the second shell, the waterproof gasket sleeves the sleeving part and is tightly abutted against the inner lateral wall so as to seal the gap between the sleeving part and the inner lateral wall. By the waterproof gasket of the bicycle rotation speed detector, water can be prevented from entering internal space and affecting internal components.


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    Titel :

    Bicycle rotation speed detector with waterproof function


    Beteiligte:
    SU ZHENGMIN (Autor:in)

    Erscheinungsdatum :

    03.06.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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