Bicycle transmission apparatus and bicycle drive unit
US10300986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2016 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M2025/006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bicycle transmission apparatus comprises a base member, a first transmission member, a second transmission member, a first coupling member, a first guide structure, a switching device, and a transmission controller. The switching device is configured to switch a position of the first transmission member relative to the base member in an axial direction between a first axial position and a second axial position. The transmission controller is configured to control the switching device and the first guide structure so as not to change a first engagement state of the first coupling member from one cogwheel to another adjacent cogwheel among first cogwheels when the first transmission member moves relative to the base member in association with a movement of the first guide structure relative to the base member to change a second engagement state of the first coupling member from one cogwheel to another adjacent cogwheel among second cogwheels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.