Title:
INSERT MOLDING
Document Type and Number:
Japanese Patent JP3584626
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress damage of depositing protrusion, to facilitate handling of a coil bobbin, and to improve an inner seal by forming a thicker second protrusion protruding from the first protrusion together with the first protrusion depositing on an outer periphery of a molded molding.
SOLUTION: A depositing protrusion 3 of a first annular protrusion and a protective protrusion 4 of a second protrusion are formed at an end of a collar of a coil bobbin 1. In this product, forming is conducted by inserting a molded molding 1 obtained by winding a coil 2 in the mold, setting it, and then pouring resin in the mold. Forming resin is heated to a temperature higher than a melting temperature of the molded molding, an end surface of the protrusion 3 is melted, at the time of cooling, fused with formed resin, and hence completely sealed. The protrusion 3 is formed as a thin annular protrusion so that the end surface is melted by heat of the formed resin. Then, an outer diameter of the protrusion 4 is increased larger than the protrusion 4.
Inventors:
Tsutomu Onoe
Hiroshi Koyama
Hiroshi Koyama
Application Number:
JP21455296A
Publication Date:
November 04, 2004
Filing Date:
August 14, 1996
Export Citation:
Assignee:
株式会社デンソー
International Classes:
B29C33/42; B29C45/14; H01F7/06; B29K101/12; B29K105/20; B29L31/34; (IPC1-7): B29C45/14; B29C33/42; H01F7/06
Domestic Patent References:
| JP6143334A | ||||
| JP62215123A | ||||
| JP4257206A | ||||
| JP1281907A |
Attorney, Agent or Firm:
Takashi Ishida
Tetsuji Koga
Toshio Toda
Masaya Nishiyama
Tetsuji Koga
Toshio Toda
Masaya Nishiyama
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