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Speed changer, especially shifting device for bicycle driving device

A technology of shifting device and driving device, which is applied to bicycle accessories, bicycle control system, bicycle gear shifting mechanism, etc., can solve problems such as difficulty in observation, and achieve the effects of simple structure, anti-interference space, and space saving.

Inactive Publication Date: 2010-08-11
SRAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of display device overcomes the above-mentioned shortcomings that some gear scales are difficult to observe, but it cannot meet the requirements of people's visual needs, that is, the relative position of the corresponding set gear beyond the actual gear position displayed in the entire gear ratio range ( Similar to comparative properties of e.g. time displays for relative numerical measurements)

Method used

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  • Speed changer, especially shifting device for bicycle driving device
  • Speed changer, especially shifting device for bicycle driving device
  • Speed changer, especially shifting device for bicycle driving device

Examples

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Embodiment Construction

[0033] As can be seen in FIG. 1, a shifting device 1 comprises a sleeve 2 fixed on a bicycle handlebar, an indicating device 3 having a display member 4 and including an indicating window 4a, and an adjusting device 5 having a groove 6 , in its groove is fixed and guides a force-transmitting member (not shown), which transmits the adjustment movement to a shift transmission member such as a Bowden wire.

[0034] For the sake of clarity, FIG. 1 does not show the drive device with the drive element arranged in area A, which is formed, for example, by an elastic-coated handle.

[0035]The angular motion of the driving device is transmitted to the transmission of the present invention on the indicating device 3 through the adjustment device 5, and the transmission includes a sun gear device 8 formed by a sun gear part 7 and arranged in the adjustment device 5, and a sun gear device 8 formed by a planetary gear 9 A planetary gear unit 10 is formed and an internal gear unit 12 forme...

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Abstract

This invention relates to a gear-selection-device (1) for a shift-changing gear, especially for a bicycle-mover, with a control-device (5), which acts through a force-transmission-element on the shift-changing gear, an operation-device with a rotatably movable operation-element to manually operate the control-device (5), and a display-device (3) with an indicator-element (4), which can move alonga circular arc, to show the gear-changed state selected by the operation-device. The angle-movements are transferred from the operation-device or the control-device (5) through the gear-transmission-device to the display-device (3), so that the circular arc passed through by the indicator-element (4) of the display-device (3) is smaller than the circular arc passed through at the same time by theoperation-element of the operation-device. This results in an improved readability of the display-device (3) and also an improved ergonomics of the gear-selection-device (1).

Description

technical field [0001] The invention relates to a shifting device for a transmission, in particular for a bicycle drive. Background technique [0002] So far, no matter the bicycles used every day or during sports are equipped with transmissions, most of them have multiple gears, so that the rider can adjust the efficiency and pedal frequency to Best state. [0003] To this end, a device for changing the drive ratio, such as a wheel hub drive or a chain changer, is provided in the area of ​​the rear wheel or the pedal drive, where the power of the bicycle is transmitted. [0004] Considering human body structure, reliability and ease of operation, most of the driving devices that select the desired gear ratio by the rider are arranged on the bicycle handlebar or the transmission guide rod of itself so far. For this purpose, for example, so-called rotary gear shifters or thumb shifters are used. [0005] In order to adapt the bicycle drive to the needs of the human body op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M25/04B62K23/04
CPCB62M25/04B62M2025/003B62K23/04Y10T74/2042
Inventor M·奥尔M·阿瑟尔
Owner SRAM
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