Transmission lock for electric vehicle
US11841081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2021 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Aug 10, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H53/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A park lock for an output drive gear includes a pawl, a rotational cam, and a rotational spring. The pawl has an engagement protrusion that extends outward from a body disposed on a pawl rotational shaft, such that rotation moves the engagement protrusion toward the output drive gear. The rotational cam rotates such that a circumferential side engages with a portion of the pawl opposite the engagement protrusion, causing rotation of the pawl about the rotational pawl shaft to move the engagement protrusion towards the output drive gear. The rotational spring maintains tension on the pawl and cam such that the engagement protrusion maintains an engagement with the output drive gear based on rotation of the cam and a speed of the output drive gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.