Actuating electromotor for technical devices, in particular in motor vehicles
US6223615A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Aug 31, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7035
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The subject matter of the invention is an electric motor-driven servo-drive for use in technical means, especially motor vehicles, with a small electric drive motor (2) with a motor shaft (4) which is provided with a gear form-fit element (3) at at least one location, proceeding especially from the end, with a worm (5) of a worm gear pair, the worm (5) slipped onto the motor shaft (4), and with a worm wheel (6) of the worm gear pair, the wheel (6) consisting preferably of plastic and coupled to the worm (5) via teeth which engage one another. It is characterized in that the worm (5) consists of plastic, that a driver (7) consisting of a harder material which transfers higher torques than the plastic of the worm (5) is slipped onto the motor shaft (4) and with the corresponding shaft form-fit element engages the gear form-fit element (3) of the motor shaft (4), that the driver (7) on a diameter which is much greater than that of the motor shaft (4) has a worm form-fit element, and that the worm (5) for its part has a driver form-fit element which engages the worm form-fit element of the driver (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.