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Title:
METHOD AND DEVICE FOR MANUFACTURING FLAT COMMUTATOR
Document Type and Number:
WIPO Patent Application WO/2004/054074
Kind Code:
A1
Abstract:
A method and a device for manufacturing a flat commutator, the method comprising the steps of fitting metal pieces forming a segment (3) to a cartridge (21), pressing the metal pieces by a punch (25) for performing a cartridge fitting step, wherein projections (22) radially formed and arranged between the metal pieces are formed on the cartridge (21) to restrict the circumferential movement of the metal pieces, an outer peripheral wall (24) in contact with the end part of the metal pieces is formed on the outer peripheral part of the cartridge (21) to restrict the radial movement of the metal pieces, double annular projections (27a) and (27b) are formed on the surface of the punch (25) opposed to the cartridge (21), and the annular projections (27a) and (27b) are pressed against the metal pieces to fit the side face of the metal pieces to the projections (22) of the cartridge (21).

Inventors:
Uehara, Shuji (33-5, Ryuzojimachi Maebashi-shi, Gunma, 371-0057, JP)
Minami, Hideyuki (2-1938-11, Hishimachi Kiryu-shi, Gunma, 376-0001, JP)
Iwashita, Kazuo (4-5-3, Kawauchicho Kiryu-shi, Gunma, 376-0041, JP)
Horiuchi, Hideki (127-12, Aioicho 2-chome Kiryu-shi, Gunma, 376-0011, JP)
Isoda, Minoru (1014, Oaza Omama Omamamach, Yamada-gun Gunma, 376-0101, JP)
Takebe, Yasuhiro (1881, Ryumaicho Oota-shi, Gunma, 373-0806, JP)
Kojima, Yoshinori (B-1 Bell Eppock, 540-2 Tsunatorimach, Isesaki-shi Gunma, 372-0812, JP)
Ishizeki, Takayuki (A202, Merci 958-3, Oaza Nishikubo, Akaborimach, Sawa-gun Gunma, 379-2204, JP)
Shishido, Mitsuru (13-14, Obikicho Tatebayashi-shi, Gunma, 374-0019, JP)
Application Number:
PCT/JP2003/015425
Publication Date:
June 24, 2004
Filing Date:
December 02, 2003
Export Citation:
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Assignee:
MITSUBA CORPORATION (2681, Hirosawacho 1-chome Kiryu-shi, Gunma, 376-8555, JP)
Uehara, Shuji (33-5, Ryuzojimachi Maebashi-shi, Gunma, 371-0057, JP)
Minami, Hideyuki (2-1938-11, Hishimachi Kiryu-shi, Gunma, 376-0001, JP)
Iwashita, Kazuo (4-5-3, Kawauchicho Kiryu-shi, Gunma, 376-0041, JP)
Horiuchi, Hideki (127-12, Aioicho 2-chome Kiryu-shi, Gunma, 376-0011, JP)
Isoda, Minoru (1014, Oaza Omama Omamamach, Yamada-gun Gunma, 376-0101, JP)
Takebe, Yasuhiro (1881, Ryumaicho Oota-shi, Gunma, 373-0806, JP)
Kojima, Yoshinori (B-1 Bell Eppock, 540-2 Tsunatorimach, Isesaki-shi Gunma, 372-0812, JP)
Ishizeki, Takayuki (A202, Merci 958-3, Oaza Nishikubo, Akaborimach, Sawa-gun Gunma, 379-2204, JP)
Shishido, Mitsuru (13-14, Obikicho Tatebayashi-shi, Gunma, 374-0019, JP)
International Classes:
B21D39/03; H01R43/06; H02K13/00; H01R39/06; (IPC1-7): H02K13/00
Foreign References:
JPS5889049A
JPS5845013A
JPS53131407A
JPH03112341A
EP0709937A2
JPS53131407A
Other References:
See also references of EP 1575150A1
Attorney, Agent or Firm:
Takano, Yasushi (TAKANO & PARTNER, Miyamasuzaka-Toho-Estate 602 1-12-12, Shibuy, Shibuya-ku Tokyo, 150-0002, JP)
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