Transmission unit with planetary gearing system

A technology for planetary gears and transmissions, applied in belts/chains/gears, vehicle gearboxes, bicycle accessories, etc., which can solve problems such as unrealized deployment length, hindering planetary gear transmission tooth meshing, high energy consumption, etc.

Active Publication Date: 2014-02-05
卡斯滕·贝廷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Solution a. has the disadvantage that due to the different arrangement of the drive sprocket (outside) and driven sprocket (inside) relative to the bicycle frame, the bicycle frame must be guided between the sprockets or through the chain drive
There is thus an additional disadvantage: the achievable overall gear ratios for wheel sizes smaller than 14 inches hardly allow for a suitable spread length
The high rotational speeds generated by the second chain drive require high energy consumption
The resulting disadvantage is that the torque of the driven ring gear first has to be transmitted to the rear wheel axle before it can be receive

Method used

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  • Transmission unit with planetary gearing system
  • Transmission unit with planetary gearing system
  • Transmission unit with planetary gearing system

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Example Embodiment

[0051] THE BEST WAY AND PREFERRED EMBODIMENT FOR THE IMPLEMENTATION OF THE INVENTION

[0052] Continuous chain drive or continuous belt drive connected before the speed change unit or of a spur gear drive connected before the speed change unit by chain 1 or V-belt or toothed belt not shown separately or not shown separately The outgoing spur gear-driven driven wheel 2 is operatively connected 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 a safety ring 4 . The drive 3 driven by the driven wheel 2 comprises a drive part 3a and according to a particular feature of the invention is shaped as a planetary carrier 3b of the planetary gear, viewed in the axial direction towards the bicycle frame.

[0053] According to a particular feature of the invention, the driven wheel 2 and the planet wheel carrier 3b are located outside the bicycle frame, viewed in the axial direction. This enables the in...

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PUM

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Abstract

The invention relates to a transmission unit with a planetary gearing system, optionally for bicycles or for trailer bicycles. The transmission unit, which is developed for driving small rear wheels, contains a planetary gearing system with a ring gear (7) which is connected to the bicycle frame (9), a planet carrier (3b) with planet gears (6a, 6b), and one or two sun gears (10, 11). The transmission unit further contains a rear wheel shaft (12) which is coaxial with respect to the sun gears or a rear wheel shaft which has the aforementioned sun gear, and the transmission unit contains a driving mechanism (3) which is coupled to the planet carrier or a driving mechanism (3) which is designed as a planet carrier (3b). The invention is characterized in that a bearing (35) internally bears the rear wheel shaft (12) with respect to the bicycle frame (9) from a radial perspective and between the seat of the rear wheel (40) and the planetary gearing system from an axial perspective, wherein the planetary gearing system and an upstream gear unit, for example a chain drive (1, 2), lie on the same side of the bicycle frame. Thus, upstream belt drives, short distances between the rear wheel and the bottom bracket, and single-arm suspensions in the bicycle frame can be implemented. The transmission unit provides one or two gear ratios.

Description

technical field [0001] The invention relates to a transmission unit with a planetary gear transmission according to the preamble of claim 1, 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 achieves a total gear ratio of up to 1:4.9 in total (eg SRAM i-motion with chainring combination 48 / 18). Th...

Claims

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Application Information

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IPC IPC(8): B62K25/00B62M11/16
CPCF16H37/04B62K25/005B62M11/02B62M11/16B62K25/00
Inventor 卡斯滕·贝廷
Owner 卡斯滕·贝廷
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