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    • 2. 发明专利
    • Diaphragm for speaker, and manufacturing method therefor
    • 用于扬声器的隔膜及其制造方法
    • JP2009188642A
    • 2009-08-20
    • JP2008025411
    • 2008-02-05
    • Nippon Kinzoku Co Ltd日本金属株式会社
    • YAMAZAKI KAZUMASAKAWAI YOSHINORITAKAHASHI YOSHIKAZU
    • H04R7/02H04R31/00
    • PROBLEM TO BE SOLVED: To provide a diaphragm for a speaker, made of a magnesium alloy having superior corrosion resistance, without causing lowering of sound reproducibility, and to provide a manufacturing method for the speaker.
      SOLUTION: The diaphragm for the speaker used in a speaker unit is provided with a base material, made of the magnesium alloy and a polyurea film formed on the surface of the base material. The manufacturing method of the diaphragm for the speaker used in the speaker unit has a stage of forming the base material of the diaphragm for the speaker by the magnesium alloy; a stage of evaporating diamine components in vacuum, a stage of evaporating diisocyanate components in vacuum; and a stage of vapor-depositing the evaporated diamine components and diisocyanate components on the base material in vacuum, polymerizing the diamine components and the diisocyanate components on the surface of the base material, and forming the polyurea film.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种由具有优异耐腐蚀性的镁合金制成的扬声器隔膜,而不会降低声音再现性,并且为扬声器提供制造方法。 解决方案:扬声器单元中用于扬声器的隔膜设置有由镁合金制成的基材和形成在基材表面上的聚脲膜。 用于扬声器单元的扬声器用隔膜的制造方法具有通过镁合金形成用于扬声器的隔膜的基材的阶段; 在真空中蒸发二胺组分的阶段,在真空中蒸发二异氰酸酯组分的阶段; 以及在真空中将蒸发的二胺成分和二异氰酸酯成分汽相沉积在基材上的阶段,在基材的表面上聚合二胺成分和二异氰酸酯成分,形成聚脲膜。 版权所有(C)2009,JPO&INPIT
    • 7. 发明专利
    • PERFORATED MATERIAL AND ITS PRODUCTION
    • JPH11114334A
    • 1999-04-27
    • JP27900897
    • 1997-10-13
    • NIPPON KINZOKU CO LTD
    • SAWADA SHOHEI
    • B01D39/00B01D39/14B21D31/04B29C67/20B29L31/14
    • PROBLEM TO BE SOLVED: To enable effectively and accurately forming relatively small openings by forming preliminary holes in a plate material consisting of plastically deformative material before shear deforming the plate material in the surface direction and forming a plurality of formed holes each deformed into a long and slender shape. SOLUTION: A perforated material having a plurality of openings is formed of a plate material 1 formed of metal materials, such as stainless steel, iron, and copper. That is, in the plate material 1, a lot of lozenge-shaped preliminary holes are previously formed in prescribed arrangement, such as staggered arrangement by punching work, laser work, and etching work. The plate material 1 in which such preliminary holes 2 are formed is plastically deformed so as to be shear deformed in both directions, as shown by arrows A, B. In this way, a perforated material having slit-shaped formed holes 2a is formed. And such perforated material is stamped out in the suitable shape to form a product such as a fluid permeable wall material for holding a filter medium or particles.