Automatic variable speed controller and method for bicycle

An automatic transmission and control device technology, which is applied to bicycle gear transmission mechanisms, bicycle accessories, transmission control, etc., and can solve problems such as discomfort for riders

Inactive Publication Date: 2003-04-23
SHIMANO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, if the speed is changed suddenly when it is not expected, it will make the rider feel uncomfortable.

Method used

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  • Automatic variable speed controller and method for bicycle
  • Automatic variable speed controller and method for bicycle
  • Automatic variable speed controller and method for bicycle

Examples

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Embodiment Construction

[0046] (1) Overall composition

[0047] figure 1 Among them, the bicycle used in one embodiment of the present invention is a light vehicle, which is composed of the following parts: a frame 1 with a double beam frame 2 and a front fork 3; a handle part 4; a driving part 5; a front wheel 6; the rear wheel 7 of the built-in speed change hub (speed change mechanism) 10 with three gears; the front and rear brake devices 8 (only the front brake device is shown in the figure), and the speed change operation part for manual operation of the built-in speed change hub 10 9.

[0048] Various components including a seat 11 and a handle portion 4 are mounted on the vehicle frame 1 . Furthermore, a rotational speed sensor 12 for detecting the rotational speed of a crank 18 is attached to the frame 2 . This rotational speed sensor (running state detecting device) 12 is constituted with magnetic force reed contact switch, produces pulse by the magnet 13 that is installed on the crank 18....

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PUM

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Abstract

The invention provides an automatic gear shifting controller for a bicycle and a method and the same, capable of informing the gear shifting in advance to a rider. This gear shifting controller for the bicycle is used for driving a transmission every gear shifting timing on the basis of a traveling condition of the bicycle, and comprises a crank rotating speed sensor 12, a gear shifting motor 29, and an LED display part 44. The crank rotating speed sensor 12 is a means for detecting the traveling condition of the bicycle. The gear shifting motor 29 is a means for driving the transmission on the basis of a result of the detection by the crank rotating speed sensor 12. The LED display part 44 is a means for informing the gear shifting in advance before the gear is shifted when the traveling condition of the bicycle approaches the gear shifting timing.

Description

technical field [0001] The invention relates to an automatic speed change control device for a bicycle and a method thereof. Background technique [0002] Conventionally, as a bicycle transmission, an automatic transmission that can appropriately change gears according to the running state of the bicycle is known as a bicycle transmission in order to reduce the work of the rider to operate the transmission. Such an automatic transmission has, for example, a motor for driving the transmission mechanism, a sensor capable of detecting the running state such as the speed of the bicycle, and a control unit for rotating the motor based on the detection result. [0003] This automatic transmission is also equipped with a sound generating device such as a buzzer, which emits a sound when a signal is sent to drive the motor. For this reason, the rider can know that the shifting operation is being performed during the actual shifting operation. [0004] However, the above-mentioned ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M25/00B62M25/08F16H61/08F16H63/40
CPCB62M25/08B62M2025/003
Inventor 竹田和弘
Owner SHIMANO INC
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