Magnet switch for engine starter
AssigneeNippondenso Co., Ltd.
InventorsMasami Niimi, Tsutomu Shiga
Life of this patent
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Abstract
A magnet switch for an engine starter includes a yoke made of magnetic material and having a cylindrical shape with a bottom and an opening. A coil disposed in the yoke includes an insulated electric wire. A stationary core made of magnetic material closes the opening of the yoke. A sleeve made of non-magnetic metal has a cylindrical shape. The sleeve is located between the bottom of the yoke and the stationary core. A plunger made of magnetic material is at least partially located in the sleeve. The plunger is slidable relative to the sleeve in an axial direction. The coil includes a regular winding which extends around the sleeve. The coil is compressed and held between the bottom of the yoke and the stationary core.
Claims3
A magnet switch for an engine starter, comprising:
- a yoke made of magnetic material and having a cylindrical shape with a bottom and an opening:
- a coil disposed in the yoke and including an insulated electric wire;
- a stationary core being made of magnetic material and closing the opening of the yoke;
- a sleeve made of non-magnetic metal and having a cylindrical shape, the sleeve being located between the bottom of the yoke and the stationary core;
- and
- a plunger made of magnetic material and being at least partially located in the sleeve, the plunger being slidable relative to the sleeve in an axial direction;
- wherein the insulated electric wire in the coil directly abuts the sleeve, and the coil is compressed and held between the bottom of the yoke and the stationary core.
Dependencies are inferred from the claim text.