Speed change control device of vehicular transmission
US8037779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2007 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Aug 17, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20177
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A speed change control device for a transmission of an internal combustion engine includes a driving means having an electric motor for rotatably driving a shift drum. The electric motor has a rotation axis orthogonal to an axis of a shift drum. A barrel cam having a cam groove rotates about an axis parallel to that of the electric motor. A transmission rotation member is interlocked and is coupled to the shift drum so as to be rotatable about the axis orthogonal to the rotation axis of the barrel cam. The transmission rotation member is provided with a plurality of engagement pins that selectively engages the cam groove. The resulting configuration allows the electric motor to be disposed inwardly with respect to an outermost side of the body of the internal combustion engine in the direction of the axis of a shift drum and improves the shift accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.