Title:
METHOD OF MANUFACTURING PERFORATED PIPE FOR GAS GENERATOR, AS WELL AS GAS GENERATOR
Document Type and Number:
WIPO Patent Application WO/2011/043314
Kind Code:
A1
Abstract:
Provided is a method of manufacturing a perforated pipe for a gas generator, this perforated pipe being such that even if the inside diameter is 10 mm or less, an opposing pair of holes can be formed easily and with high accuracy. Also provided is a gas generator such that the outside diameter of a tubular housing is reduced, making the entire gas generator compact and lightweight. The aforementioned method of manufacturing a perforated pipe for a gas generator comprises performing a tubular member forming process for forming a closed-end tubular member from a rod-like member by means of press-forming using a rod-like member and a mold which internally has a shape similar to the outer shape of the rod-like member; then performing a hole punching process for forming one or more opposing pairs of holes by inserting a die which has through holes into the aforementioned tubular member in place of the rod-like member, and punching out holes by means of a punching member, in line with the positions of the aforementioned through holes, in the tubular member formed in the aforementioned tubular member forming process. The distance between the holes in each of the aforementioned pairs of holes takes on an unspecified value between 3 mm and 10 mm. The aforementioned gas generator has a perforated pipe that is manufactured by the above method.
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Inventors:
ENAMI Koichi (NIPPONKAYAKU KABUSHIKIKAISHA3903-39,Toyotomi,Toyotomi-ch, Himeji-shi Hyogo 23, 〒6792123, JP)
榎並 宏一 (〒23 兵庫県姫路市豊富町豊富３９０３－３９ 日本化薬株式会社 姫路工場内 Hyogo, 〒6792123, JP)
榎並 宏一 (〒23 兵庫県姫路市豊富町豊富３９０３－３９ 日本化薬株式会社 姫路工場内 Hyogo, 〒6792123, JP)
Application Number:
JP2010/067410
Publication Date:
April 14, 2011
Filing Date:
October 05, 2010
Export Citation:
Assignee:
NIPPONKAYAKU KABUSHIKIKAISHA (11-2, Fujimi 1-chomeChiyoda-ku Tokyo, 72, 〒1028172, JP)
日本化薬株式会社 (〒72 東京都千代田区富士見１丁目１１番２号 Tokyo, 〒1028172, JP)
ENAMI Koichi (NIPPONKAYAKU KABUSHIKIKAISHA3903-39,Toyotomi,Toyotomi-ch, Himeji-shi Hyogo 23, 〒6792123, JP)
日本化薬株式会社 (〒72 東京都千代田区富士見１丁目１１番２号 Tokyo, 〒1028172, JP)
ENAMI Koichi (NIPPONKAYAKU KABUSHIKIKAISHA3903-39,Toyotomi,Toyotomi-ch, Himeji-shi Hyogo 23, 〒6792123, JP)
International Classes:
B60R21/264; B21D28/28
Attorney, Agent or Firm:
NARA Yasuhiro (NARA PATENT FIRM, Tenmabashi Chiyoda Bldg. No.21-1,Kokumachi 1-chome,Chuo-k, Osaka-shi Osaka 33, 〒5400033, JP)
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