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Transmission for a bicycle

A technology for transmissions and bicycles, applied in the direction of vehicle gearboxes, vehicle parts, components with teeth, etc., can solve the problem of high structural cost of transmissions, and achieve the effects of simplified accessibility, fast assembly, and good efficiency

Inactive Publication Date: 2019-07-30
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The variator has a total of seven planetary gear planes comprising several multi-stage planetary elements, making the variator very costly in construction

Method used

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  • Transmission for a bicycle
  • Transmission for a bicycle
  • Transmission for a bicycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] figure 1 The transmission according to the present invention according to the first embodiment is shown, which is rotationally symmetrical about the bottom crankshaft 5. in figure 1 Only the upper half of the transmission is shown in.

[0039] The transmission has four switching elements, namely, a first switching element S1, a second switching element S2, a third switching element S3, and a fourth switching element S4. The first switching element S1 and the fourth switching element S4 are implemented as clutches. The second switching element S2 and the third switching element S3 are implemented as brakes.

[0040] In addition, the transmission has a drive shaft 1, a first planetary set PS1 operatively connected with the drive shaft 1, a second planetary set PS2, and an output shaft 2. The drive shaft 1 is connected to the ring gear of the first planetary set PS1 in a non-rotating manner, and the planet carrier of the first planetary set PS1 is connected to the output shaf...

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PUM

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Abstract

The invention relates to a transmission for a bicycle, comprising at least four shifting elements, an input shaft (1), a first planetary gear set (PS1), which is operatively connected to the input shaft (1), a second planetary gear set (PS2), which is operatively connected to the input shaft (1), and an output shaft (2). The transmission is characterized in that the input shaft (1) is connected toa ring gear of the first planetary gear set (PS1) for conjoint rotation and the output shaft (2) is connected to a planet carrier of the first planetary gear set (PS1) for conjoint rotation.

Description

Technical field [0001] The present invention relates to a transmission for a bicycle. The transmission has at least four switching elements, a drive shaft, a first planetary set operatively connected to the drive shaft, a second planetary set operatively connected to the drive shaft, and an output shaft . [0002] Furthermore, the present invention relates to a bottom bracket provided with this transmission. In addition, the present invention relates to a bicycle having the bottom bracket or the transmission. Background technique [0003] Various transmissions that can be used in bicycles are known from the prior art. Thus, for example, from US 2011177 911 A1, a transmission is known, which has three successive planetary transmissions, which have an increased gear ratio. The transmission has a total of seven planetary gear planes, which include multiple multi-stage planets, so that the structural cost of the transmission is very high. Summary of the invention [0004] The task o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M6/55B62M11/14B62M11/18
CPCB62M6/55B62M11/145B62M11/18F16H3/44F16H2200/2007F16H2200/201
Inventor 约翰尼斯·卡尔滕巴赫瓦莱里·恩格伦乌韦·格里斯迈尔马蒂亚斯·尼奇米夏埃尔·韦克斯延斯·莫拉夫格哈德·尼德布鲁克
Owner ZF FRIEDRICHSHAFEN AG
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