Internal combustion engine ignition coil
AssigneeMitsubishi Electric Corporation
InventorsChikara Hashida, Shuji Yamada
Life of this patent
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Abstract
An internal combustion engine ignition coil includes: a center core; a primary coil provided on an outer side of the center core; a secondary coil provided on an outer side of the primary coil; and a side core provided on an outer side of the primary coil and the secondary coil and formed by stacked electromagnetic steel sheets, the side core having one contact portion in contact with one end surface of the center core and another contact portion in contact with another end surface of the center core with a magnet therebetween. The side core is composed of a plurality of side core portions fitted to each other to be movable relative to each other in a longitudinal direction of the center core.
Claims9
An internal combustion engine ignition coil comprising:
- a center core;
- a primary coil provided on an outer side of the center core;
- a secondary coil provided on an outer side of the primary coil;
- and
- a side core provided on an outer side of the primary coil and the secondary coil and formed by stacked electromagnetic steel sheets, the side core having one contact portion in contact with one end surface of the center core, the side core having another contact portion in contact with another end surface of the center core with a magnet therebetween, wherein
- the side core is composed of a plurality of side core portions fitted to each other to be movable relative to each other in a longitudinal direction of the center core,
- the side core has an overlap portion at which electromagnetic steel sheets of the side core portions adjacent to each other are separated at different locations and overlap with each other, and
- a fitting portion which allows the side core portions adjacent to each other to move relative to each other, is formed on the overlap portion, and
- at the fitting portion, a projection is formed on one of the side core portions and an elongated hole is formed in another one of the side core portions.
Dependencies are inferred from the claim text.