Safety switch
US10861660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2018 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Feb 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2027/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cam of a safety switch rotates about a rotational shaft in accordance with an operation of inserting an actuator into an opening and an operation of withdrawing the actuator. A switch part includes an operation rod that reciprocates according to a rotation angle of the cam, and detects an insertion state where the actuator is inserted in the opening. In the insertion state, a locking member locks the actuator upon engagement with a part of the cam. When the operation of withdrawing the actuator is performed in a locked state of the actuator, the cam pushes the locking member in one direction, and the locking member pushes a part of a head case in the one direction. This improves locking strength of the safety switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.