| 发明名称 |
BICYCLE GEAR CHANGING CONTROL APPARATUS, ELECTRICALLY ASSISTED SYSTEM, AND BICYCLE GEAR CHANGING CONTROL METHOD |
| 摘要 |
A bicycle gear changing control apparatus includes a controller that is programmed to control a gear changing state of a bicycle transmission according to an operation of a gear changing operating device upon determining a bicycle traveling speed is greater than a first speed. The controller controls the transmission automatically to be in a first prescribed gear changing state upon determining the bicycle traveling speed becomes less than or equal to the first speed and upon determining a gear ratio of a current gear changing state of the transmission is larger than a preset gear ratio of the first prescribed gear changing state. The controller controls the transmission automatically, after controlling the transmission to be in the first prescribed gear changing state, to a larger gear ratio than the gear ratio of the first prescribed gear changing state, upon determining the bicycle traveling speed becomes greater than a second speed. |
| 申请公布号 |
US2015345620(A1) |
申请公布日期 |
2015.12.03 |
| 申请号 |
US201514717595 |
申请日期 |
2015.05.20 |
| 申请人 |
Shimano Inc. |
发明人 |
WATARAI Etsuyoshi |
| 分类号 |
F16H61/02;B62M25/08;F16H59/44;B62M11/16 |
主分类号 |
F16H61/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A bicycle gear changing control apparatus comprising:
a shift controller is programmed to: control a gear changing state of a bicycle transmission according to an operation of a gear changing operating device upon determining a traveling speed of a bicycle is greater than a first speed; control the bicycle transmission automatically to be in a first prescribed gear changing state upon determining the traveling speed of the bicycle becomes less than or equal to the first speed and upon determining a gear ratio of a current gear changing state of the bicycle transmission is larger than a preset gear ratio of the first prescribed gear changing state; and control the bicycle transmission automatically, after controlling the bicycle transmission to be in the first prescribed gear changing state, to a larger gear ratio than the gear ratio of the first prescribed gear changing state, upon determining the traveling speed of the bicycle becomes greater than a second speed. |
| 地址 |
Osaka JP |
