Motor vehicle starter with reduction gear comprising means forming torsional damper
US6490940B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Aug 22, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/137
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The motor vehicle starter (10) has a casing (18) in which there is arranged an electric motor (12) which rotates a coaxial starter head (22) with the interposing of an epicyclic gearbox (34) including a ring gear (44) made of rigid material (M1) which is housed at least partially in a cavity (58) in the casing and which has an internally toothed cylindrical annular skirt (46) closed at its front axial end by a radially oriented transverse wall (50) with a hole at its centre (52) for the output shaft (42) of the gearbox to pass; the ring gear (44) has pins (P) moulded from a flexible material (M2), notably elastomer material, which are interposed between the ring gear (44) and complementary portions (68) of the cavity (58) of the casing (16, 18) in order to immobilise the ring gear (44) rotationally with respect to the casing (18) and provide a function of torsion damping between these two components (44, 18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.