| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent water infiltration into a coil relevant to a coil unit. <P>SOLUTION: A bobbin 10 has a configuration where a holding groove 13 is formed which continuously opens over the all periphery by raising at about a right angle a pair of support 12 from both edges of a main body 11 of circular form, wherein a coil 20 is held in the holding groove 13, and a housing body 30 is molded so as to cover from the opening of the housing groove to the external surface of the support 12. In the annular region covered by the housing body 30 among the external surface of the support 12, a sealer 40 is coated so as to continue over the hoop direction. Even if liquid infiltrates into a clearance between the support 12 and the housing body 30 by capillarity, since the infiltration is blocked by the sealer 40, liquid does not reach the coil 20. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
