Linear actuator
US8227949B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2010 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jan 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K37/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a linear actuator (1), at least including a stator (3) that is placed within a cartridge-like casing (2), a bearing ring (4) with a bearing seat for mounting a rotor (5) with an antifriction bearing (6), a spindle (7) that on its drive side (7.1) is together with the rotor (5) designed as motion transformer to transform the rotary motion into a translatory motion and a flange (9) that closes the casing (2) on the output side (8) of the linear actuator (1), the flange (9) being equipped with an anti-rotation locking device for the spindle output side (7.2) that penetrates the flange (9). According to the invention the cartridge-like casing (2) is provided with several formed bending tongues (10.1, 10.2), whereby in assembled condition first bending tongues (10.1) engage with groove-like recesses (11) of the bearing ring (4) of the antifriction bearing (6) and second bending tongues (10.2) engage with groove-like recesses (11) of the flange (9) so that all components (3, 4, 5, 7 and 9) placed in the casing are tensioned against each other without further connection techniques being required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.