Title:
ELECTROMAGNETIC SWITCH
Document Type and Number:
WIPO Patent Application WO/2014/077103
Kind Code:
A1
Abstract:
The purpose of the present invention is to make it possible to close a contact of an electromagnetic switch at the front stage of a starting motor even when a weak magnetic field is generated by an electromagnetic solenoid. The electromagnetic switch comprises: a resistor for restricting a current flowing from a battery to the starting motor for starting an engine; a sub-contact which includes a fixed contact and a movable contact arranged in parallel with the resistor; a solenoid coil which generates a first magnetic field in response to energization from the battery; and a movable core surrounded by the solenoid coil. The resistor is arranged in a magnetic circuit of the solenoid coil, which includes a coil portion formed in a coil shape to surround the movable core so that, when a current flows in the coil portion, a second magnetic field is generated in the same direction as the first magnetic field to bring the movable contact into contact with the fixed contact.
Inventors:
YAMADA TAKESHI (JP)
OMATA SHIGEHIKO (JP)
NAKAZATO SHIGENORI (JP)
OMATA SHIGEHIKO (JP)
NAKAZATO SHIGENORI (JP)
Application Number:
PCT/JP2013/078896
Publication Date:
May 22, 2014
Filing Date:
October 25, 2013
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H01H50/44
Foreign References:
| JP2011523761A | 2011-08-18 | |||
| JPS4719522Y1 | 1972-07-03 | |||
| JP2010225596A | 2010-10-07 | |||
| JP2001349250A | 2001-12-21 |
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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