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Title:
METHOD FOR MANUFACTURING COIL DEVICE
Document Type and Number:
Japanese Patent JP2005209853
Kind Code:
A
Abstract:

To provide a method for manufacturing a coil assembly 26 of an electromagnetic valve 3 wherein the periphery of a winding composed of a solenoid coil 4, a terminal 5 and a coil bobbin 6 is coated with a secondary resin mold member 7, thereby preventing the seal property of a liquid seal such as fuel or oil from being degraded, and preventing an insulation property from being degraded.

At a secondary forming step of the coil assembly 26, front ends of a plurality of projections 53 formed in the collar-shaped part 52 of the coil bobbin 6 are plugged into a plurality of recesses 71 of a second resin forming die 8 for forming a secondary mold, so that the built-in winding can be positioned so as not to move by forming pressure at the secondary forming step. Therefore, a secondary resin mold member 7 can be resin-molded at a uniform thickness on the entire periphery of an insert product (the solenoid coil 4, the terminal 5 and the coil bobbin 6).


Inventors:
MURAKAMI FUMIAKI
Application Number:
JP2004000014247
Publication Date:
August 04, 2005
Filing Date:
January 22, 2004
Export Citation:
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Assignee:
DENSO CORP
International Classes:
F02M51/00; H01F7/06; H01F41/12; H01F41/06; (IPC1-7): H01F7/06; H01F41/12
Domestic Patent References:
JPH06151162A1994-05-31
JPH04133304A1992-05-07
JPH0689819A1994-03-29
JP2004014700A2004-01-15
JP2000252150A2000-09-14
JPS62204313U1987-12-26
JPH0963835A1997-03-07
Attorney, Agent or Firm:
石黒 健二