PROBLEM TO BE SOLVED: To provide a vehicle horn that can secure sound pressure and restrain the malfunction of a movable iron core due to the heat deformation of a bobbin.SOLUTION: An electromagnetic coil unit 2 comprises: a coil 20; a bobbin 21 provided inside a housing 1 and including the coil 20 formed by winding a wire around the outer peripheral surface of a cylindrical section 210; and a fixed iron core 22 excited by applying current to the coil 20. A movable iron core 4 is provided so as to be concentric with the fixed iron core 22 and face it in an axial direction, and attracted by the excited fixed iron core 22. A diaphragm 3 is coupled with the movable iron core 4 at the opposite side to a side where the fixed iron core 22 is placed, and vibrates in tune with the movement of the movable iron core 4 that is displaced in the axial direction relative to the fixed iron core 22. An apical surface 220 facing the movable iron core 4 of the fixed iron core 22 is situated closer to the diaphragm 3 in the axial direction to an end surface 2110 at the diaphragm 3 side around the inner peripheral edge of the cylindrical section 210 of the bobbin 21.SELECTED DRAWING: Figure 1

    【課題】音圧を確保できるとともに、ボビンの熱変形による可動鉄心の動作不具合を抑制できる車両用警音器を提供する。【解決手段】電磁コイル部2は、コイル20と、ハウジング1の内部に設けられ、筒状部210の外周面に巻線が巻回されて形成されるコイル20を有するボビン21と、コイル20への通電により励磁される固定鉄心22と、を備える。可動鉄心4は、固定鉄心22に対して同心状にかつ軸心方向に対向するように設けられて励磁された固定鉄心22に吸引される。振動板3は、固定鉄心22が配されている側とは反対側で可動鉄心4に結合されて固定鉄心22に対して軸心方向に変位する可動鉄心4の動きに伴って振動する。固定鉄心22における可動鉄心4に対向する先端面220は、ボビン21の筒状部210の内周縁周りにおける振動板3側の端面2110に対して、軸心方向について振動板3寄りに位置する。【選択図】図1


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    Title :

    VEHICLE HORN


    Additional title:

    車両用警音器


    Contributors:

    Publication date :

    2016-12-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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