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Bicycle shift control device that responds to a manually operated switch

A technology of a speed change device and a control device, which is applied to bicycle gear shifting mechanisms, bicycle accessories, vehicle gearboxes, etc., can solve the problems of increasing the burden on beginners, becoming lighter, and increasing the pedaling force.

Inactive Publication Date: 2007-12-26
SHIMANO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of automatic shifting, the shifting speed will be changed arbitrarily according to the speed of the vehicle, regardless of the will of the rider.
Therefore, the pedaling force of the pedals will become heavier and lighter at times, causing discomfort, and on the contrary, it will increase the burden on beginners.

Method used

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  • Bicycle shift control device that responds to a manually operated switch
  • Bicycle shift control device that responds to a manually operated switch
  • Bicycle shift control device that responds to a manually operated switch

Examples

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Embodiment approach

[0060] (a) In the foregoing embodiments, the present invention has been described by taking the electric external transmission as an example, but the present invention can also be applied to an internal transmission composed of an internal transmission hub. In addition, the present invention can also be applied to a shifting device shifted by a shifting cable. In this case, it is only necessary to provide an electric cable driving device for electrically winding / unwinding the shifting cable on the transmission device, and to control the electric cable driving device with the transmission control device.

[0061] In FIGS. 6 and 7 , the bicycle includes: a frame 101 including a frame body 101a, a swing arm 101b swingably connected to the frame body 101a via a rear shock absorber 113r, a front fork 103, and a handlebar. Part 104; Drive part 105, comprises built-in speed change device 109 (Fig. 7); Front wheel 106, is installed on the front fork 103; Rear wheel 107, is installed w...

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PUM

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Abstract

To provide a gear shift control device for a bicycle capable of easily performing gear shift operations according to rider's will even if he / she is a beginner. This gear shift control device 11 includes a gear shift switch 20, a speed detection section 36 and a gear shift control section 30. The gear shift switch is a switch for performing the output operation of a speed change order to a front derailleur 26f and a rear derailleur 26r having a plurality of gear shift stages. The speed detection section is a device for detecting the speed of a bicycle. The gear shift control section sets the front derailleur and the rear derailleur to the specified gear shift stage according to the detection result by the speed detection section when the speed change order is output by the operation of the gear shift switch.

Description

technical field [0001] The present invention relates to a bicycle gear shift control device and a gear shift control method for controlling a gear shift device having a plurality of shift gears. Background technique [0002] Conventionally, as a transmission for a bicycle, an external transmission having a front derailleur and a rear derailleur, and an internal transmission having an internal transmission hub on which a planetary gear mechanism is mounted are known. In the external derailleur, the chain is moved between a plurality of front sprockets axially arranged on the crankshaft and a plurality of axially arranged on the rear wheel hub axle by means of the front derailleur and the rear derailleur. on one of the rear sprockets to shift gears. As a transmission device for performing such a shift operation of a derailleur, a device having two shift operating levers is known (for example, refer to Patent Document 1). Conventional shift operating devices include: a rear s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M25/08B62J6/16B62M9/122B62M9/123B62M9/132B62M9/133
CPCB62M25/08
Inventor 渡会悦义
Owner SHIMANO INC
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