Transmission unit with planetary gear transmission

A technology for planetary gears and transmissions, applied to belts/chains/gears, vehicle gearboxes, bicycle accessories, etc., which can solve the problems of hindering the tooth meshing of planetary gear transmissions, unrealizable deployment length, high energy consumption, etc.

CN103562058BActive Publication Date: 2016-10-26卡斯滕·贝廷
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-10-26

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Abstract

The invention relates to a transmission unit with a planetary gear transmission, optionally for a bicycle or for a bicycle trailer. The transmission unit developed to drive the small size rear wheels consists of: a planetary transmission with an internal gear (7) connected to the bicycle frame (9), a planetary carrier (3b) with planetary gears (6a, 6b) and One or two sun gears (10, 11); rear axle (12) coaxial with said sun gear or rear axle with said sun gear; drive coupled to planetary carrier or shaped as planetary carrier (3b ) of the drive (3). It is characterized in that the bearing (35) supports the rear wheel shaft (12) on the inner side relative to the bicycle frame (9) in the radial direction and is between the support of the rear wheel (40) and the planetary gear transmission in the axial view, the planet The gear transmission is in turn located on the same side of the bicycle frame as the front transmission, for example the chain drive ( 1 , 2 ). In this way, a belt drive at the front, a short distance between the rear wheel and the pedal bearing and a single-arm suspension in the bike rack are possible. The transmission unit provides one or two gear ratios.
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Description

technical field

[0001] The invention relates to a transmission unit with a planetary transmission, optionally for a bicycle with small wheels or for a bicycle trailer. Background technique

[0002] The chain drive is the most popular bicycle drive. In this case, the driving sprocket connected to the pedal is mainly located outside the bicycle frame when viewed axially, and the driven ring gear supported on the rear wheel shaft is mainly arranged inside the bicycle frame and the bicycle frame when viewed axially. between the rear wheels.

[0003] Multi-speed shifting for bicycles is preferably via a chain drive with different sprockets on the pedals and a different ring gear on the rear wheel or by a single-stage chain drive combined with a hub shift in the rear wheel or by both A combination of schemes can be realized. This results in a total transmission ratio of up to 1:4.9 (eg SRAMi-motion with chainring combination 48 / 18). These shifting combinations are applied to w...

Examples

Embodiment approach

[0043] figure 1 Shown is a sectional view of a two-speed transmission unit with a spur-dog-freewheel clutch and a single-arm rear wheel suspension.

[0044] V-belts or toothed belts connected to a continuous chain drive or a continuous belt drive preceding a variator unit or connected to a spur gear drive preceding a variator unit, shown either by a chain 1 or not separately or not separately The driven wheel 2 driven by the spur gear is operatively connected in relative rotation to the drive 3 of the transmission unit via a shaft-hub connection, wherein the driven wheel 2 is fastened to the drive 3 , for example by means of a safety ring 4 . The driver 3 driven by the driven wheel 2 comprises a driver part 3a and is formed as a planetary carrier 3b of a planetary gearing, viewed axially towards the bicycle frame, according to a particular feature of the invention.

[0045] According to a particular feature of the invention, the driven wheel 2 and the planetary carrier 3b are...