Electromagnetic switch of engine starter
US6937123B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 22, 2004 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Sep 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/0015
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic switch of an engine starter includes a pair of stationary contacts connectable to a starter motor, a movable contact disposed at a first distance from the pair of stationary contacts; a rod having one end that slidably supports the movable contact via an insulating member and a stopper that restricts axial movement of said movable contact, an electromagnetic coil unit that includes a plunger, a stator core, a spring that urges the movable contact against the stopper and an exciting coil which moves the rod by the plunger a second distance when excited, and an inclination rectifying member, disposed near the stationary contacts, for providing a rectifying surface disposed at a third distance from the movable contact to abut the movable contact when one of the stationary contacts wears to a preset degree. There is the following relationship between the first, second and third distances: the second distance>the third distance>the first distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.