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Transmission for a bicycle

A technology for transmissions and bicycles, which is applied to vehicle gearboxes, vehicle components, and components with teeth, etc., which can solve the problems of expensive construction of the center shaft transmission, and achieve the effect of simple construction and low construction cost

Inactive Publication Date: 2019-08-02
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the construction effort for the center shaft transmission is expensive

Method used

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

Examples

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Embodiment Construction

[0032] exist figure 1The transmission shown in is embodied rotationally symmetrically with respect to the center axis M of the transmission, wherein only the upper half of the transmission is shown. The transmission has a transmission input shaft 1 connected in a rotationally fixed manner to a bottom bracket crank 2 . The bottom bracket crank 2 each has a pedal at its ends. Furthermore, the transmission has a first planetary set PS1 , a second planetary set PS2 and a third planetary set PS3 , which are interconnected. In this case, the planetary carrier of the first planetary set PS1 is connected in a rotationally fixed manner to the transmission input shaft. The first planetary set PS1 has planets with a first planetary stage 3 and a second planetary stage 5 .

[0033] The first ring gear 6 meshes with the first planetary stage 3 and can be connected in a rotationally fixed manner to the transmission housing 4 by means of the first shift element S1 . The second ring gear ...

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Abstract

The invention relates to a transmission for a bicycle, having a transmission input shaft (1) which can be connected fixedly to a pedal bearing crankshaft (2) so as to rotate with it, a first planetaryset (PS1), a second planetary set (PS2) and a third planetary set (PS3) which are operatively connected to one another, wherein an element of the first planetary set (PS1) is connected fixedly to thetransmission input shaft (1) so as to rotate with it, and the first planetary set has a planet with a first planetary stage (3) and a second planetary stage (5). The transmission is characterized inthat a first internal gear (6) which is in engagement with a toothing region of the first planetary stage (3) can be connected fixedly by means of a first switching element (S1) to a transmission housing (4) so as to rotate with it, and a second internal gear (7) which is in engagement with a toothing region of the second planetary stage (5) can be connected fixedly by means of a second switchingelement (S2) to the transmission housing (4) so as to rotate with it.

Description

technical field [0001] The invention relates to a transmission for a bicycle having a transmission input shaft connectable to a bottom bracket crank in a rotationally fixed manner (drehfest), a first planetary set, a second planetary set and a third planetary set interacting The first planetary set has elements connected to the transmission input shaft in a rotationally fixed manner, and the first planetary set has planetary elements with a first planetary stage and a second planetary stage. [0002] The invention also relates to a center shaft transmission with such a transmission. Furthermore, the invention also relates to a bicycle with the transmission or the bottom shaft transmission. Background technique [0003] Various transmissions are known from the prior art for use in the bottom bracket of bicycles. Thus, US 2011 17911 A1 discloses a center shaft transmission with three successive planetary gearings. The planetary gear is designed in such a way that an increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M11/14B62M11/18
CPCB62M11/145B62M11/18F16H3/663B62M6/60F16H3/66F16H2200/006F16H2200/0078F16H2200/201F16H2200/2046F16H2200/2048F16H2200/2051
Inventor 乌韦·格里斯迈尔约翰尼斯·卡尔滕巴赫瓦莱里·恩格尔马蒂亚斯·尼奇
Owner ZF FRIEDRICHSHAFEN AG
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