Four-wheel drive system for vehicles
US6726591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jul 15, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H48/05
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The four-wheel drive system for vehicles has a center differential mechanism that divides the rotational driving force from the engine E between the front and rear wheels, and a front wheel side axle differential mechanism that divides this divided rotational driving force between the left and right front wheels. The center differential mechanism is constructed from a single pinion type first planetary gear device which has a first carrier 13 that receives the rotational driving force from the engine E, a first sun gear 11, and a first ring gear 14 that is connected to the rear wheel side, and the axle differential mechanism is constructed from a double pinion type second planetary gear device which has a second ring gear 24 that is connected to the first sun gear 11, a second sun gear 21 that is connected to the right front wheel, and a second carrier 23 that is connected to the left front wheel. The first and second planetary gear devices are disposed adjacent to each other in a coaxial configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.