To provide an ultrasonic horn for fixing an automotive sound absorbing material, a method for producing a fixing structure for the automotive sound absorbing material, and a fixing structure for the automotive sound absorbing material, which fixes the automotive sound absorbing material by ultrasonic vibration at a deep position in a fiber-based base material and maintains stable fixing strength at a fixing point.SOLUTION: A ultrasonic horn 5 for fixing an automotive sound absorbing material is used to produce a fixing structure for the automotive sound absorbing material 3, in which a fixing part 14 of the automotive sound absorbing material 3 layered on a base material 2, which is a fiber molded body containing thermoplastic synthetic resin, is fixed to the base material 2. In a production of fixing structure of the sound absorbing material 3 for automotive use, the ultrasonic horn 5 includes: a pressing surface 23 for applying a pressing force to the fixing part 14 to push the fixing part 14 into the base material 2; and a transmission part 21 that realizes transmission of ultrasonic vibration from the pressing surface 23 toward the fixing part 14. The pressing surface 23 has a shape in which a displacement area 26 is set on a peripheral edge part such that a pressing depth of the fixing part 14 into the base material 2 becomes shallower toward an outer periphery.SELECTED DRAWING: Figure 7

    【課題】繊維系基材の深い位置で超音波振動により車載用吸音材を固着すると共に、固着箇所において安定した固着強度が維持される、車載用吸音材固定用超音波ホーン、車載用吸音材の固定構造を生産する方法、及び車載用吸音材の固定構造を提供する。【解決手段】車載用吸音材固定用超音波ホーン5は、熱可塑性合成樹脂を含んだ繊維成形体である基材2上に重ねられた車載用吸音材3の固着部14が、基材2に固着されてなる車載用吸音材3の固定構造を生産する用に供されるものである。超音波ホーン5は、車載用吸音材3の固定構造の生産にあたり、固着部14を基材2に押し込む押圧力を固着部14に作用させる押圧面23と、押圧面23から固着部14に向かう超音波振動の伝達を実現させる伝達部21とを有し、押圧面23は、その周縁部に、固着部14の基材2への押し込み深さが外周に向かうにつれて浅くなる変位エリア26が設定された形状を呈する。【選択図】図7


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    Title :

    ULTRASONIC HORN FOR FIXING AUTOMOTIVE SOUND ABSORBING MATERIAL, METHOD FOR PRODUCING FIXING STRUCTURE FOR AUTOMOTIVE SOUND ABSORBING MATERIAL, AND FIXING STRUCTURE FOR AUTOMOTIVE SOUND ABSORBING MATERIAL


    Additional title:

    車載用吸音材固定用超音波ホーン、車載用吸音材の固定構造を生産する方法、及び車載用吸音材の固定構造


    Contributors:

    Publication date :

    2023-05-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL



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