Title:
電磁スイッチ
Document Type and Number:
Japanese Patent JP4569547
Kind Code:
B2
Abstract:
In an electromagnet switch, a stationary iron core is composed mainly of a base part and a disk part. The base part is faced to a plunger and the disk part is forcedly inserted and fixed to a boss part formed in the base part. The disk part is composed of a metal plate of ferromagnetic substance (iron plate) and another substance plate (made of resin or rubber and the like, for example,) of a smaller spring constant or a larger damping coefficient than that of the metal plate. The metal plate and another substance plate are laminated. Another substance plate absorbs or reduces the impact force when the plunger is electromagnetically attracted toward and collides with the base part. The propagation of a large impact noise or crashing sound is thereby suppressed, and as a result the impact noise can be reduced.
Inventors:
Kurasawa Tadahiro
Shinji Usami
Tomohiro Teramachi
Shinji Usami
Tomohiro Teramachi
Application Number:
JP2006231875A
Publication Date:
October 27, 2010
Filing Date:
August 29, 2006
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H01H50/36; F02N11/00; H01H50/16; H01H50/30
Domestic Patent References:
| JP2002524826A | ||||
| JP51032746U | ||||
| JP5001150U | ||||
| JP6214406A | ||||
| JP5654016A |
Attorney, Agent or Firm:
Kenji Ishiguro