Transmission mechanism for electric drill and electric drill including the same
US11867261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2020 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Jan 28, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/02039
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention provides a transmission mechanism for an electric drill and the electric drill including the transmission mechanism. The transmission mechanism includes a primary planet carrier, a gear assembly, a secondary planet carrier, and a secondary gear assembly. The gear assembly comprises a primary gear ring and a primary gear set located in the primary gear ring. The primary gear set has two primary planetary gear sets mounted on the primary planetary gear shaft. The secondary planet carrier is provided with secondary planetary gear shafts and an output shaft. The secondary gear assembly includes a secondary gear ring and a secondary planetary gear set. The secondary planetary gear set is pivotably mounted on the secondary planetary gear shafts, an outer side of the secondary planetary gear set engages with the secondary gear ring, and an inner side of thereof engages with the sun gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.