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    • 6. 发明专利
    • NOISE SUPPRESSOR FOR VEHICLE AND MANUFACTURE THEREOF
    • JPH04166609A
    • 1992-06-12
    • JP40986390
    • 1990-12-12
    • HONDA MOTOR CO LTDGOUSHI GIKEN KOUGIYOU KK
    • KITASEI KOUJIIIME TSUYOSHITERADA YASUOHAYAGAMI MASAYAIWAMOTO AKIHIKO
    • F01N13/18B23K9/00
    • PURPOSE:To increase rigidity of an outer casing and prevent vibration of the outer casing by providing a noise suppressing interior body uniting a noise suppressor constituting material in one body and the outer casing capable of coming into closely contact with the outer peripheral part of the noise suppressing interior body, and welding matching edge surfaces of the outer casing under a condition that the outer casing can cover and support closely the peripheral part of the noise seppressing interior body. CONSTITUTION:A noise suppressing interior body 3 is constituted of three sheets of partition plates 4-6, an approximately circular cone shape front edge plate 7, an outer pipe 8, a diffuder 9, an inner casing 10, communicating tubes 11 and 12, a tail pipe 13 and a rear edge plate 14, and these contact parts are united in one body by means of arc welding. Meanwhile, an outer casing 2 is formed approximately in a cylindrical shape by carrying out roll processing on a rectangular shape plate material 20 so that a space 22 can be kept between both linear edge surface parts 21. The noise suppressing interior body 3 is inserted into such outer casing 2 in the lengthwise direction, and directly coupled edge surface parts 21 are united mutually in one body by means of Mig welding, and at places where the space 22 in flange parts for the partition plates 4-6 and the rear edge plate 14 is situated, the directly coupled edge surface parts 21 and these flange parts are also united in one body by means of the Mig welding, and thereby rigidity of the outer casing 2 can be increased extremely.