Stroke-limiting control assembly and operating method thereof
US11231094B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 22, 2019 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Dec 31, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H1/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present disclosure relates to the field of stroke-controlling mechanism, and discloses a stroke-limiting control assembly and an operating method. The stroke-limiting control assembly comprises a housing and a film winding. A transmission input gear, a transmission gear, a guide wheel, and a spring box that can be rotated to reset by an elastic force are rotatably connected within the housing. When a moving component moves to an end of an upper stroke, a first metal needle abuts a first proximity switch. When the movable component moves to an end of a lower stroke, a second metal needle abuts against a second proximity switch. At least a stroke-limiting control assembly is provided which enables simplification of a product requiring stroke-limiting, such as an electric jack or an electric support leg, by arranging the proximity switches outside a screw nut lifting unit in the electric jack or the electric support leg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.