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electric bicycle auxiliary drive

A bicycle and drive technology, applied in the direction of electric components, rider drive, electromechanical devices, etc., can solve the problems of guiding cables to batteries and complex control and operation devices

Active Publication Date: 2019-05-21
PENDIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the routing of the cables to the batteries and the control and operating devices has proven to be relatively complex

Method used

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  • electric bicycle auxiliary drive

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Embodiment Construction

[0008] The shown exemplary embodiment of the electric auxiliary bicycle drive according to the invention comprises a standard bottom bracket 1 arranged in a bottom bracket housing 3 which is, in a known manner, a component part of a bicycle frame. On the right side in the direction of travel, on a center journal not explicitly shown (which is known to the skilled person in its design, for example, as a square), a sprocket set 12 is arranged in a form-fitting manner, here embodied as Three sets, with the right side pedal crank 11 having a pedal hole 17 at the distal end and secured by a first central bolt 16 in a known manner. On the left in the direction of travel, the rotor housing, which is formed as the rotor housing 2 , is arranged in a form-fitting manner on the corresponding center journal and is fastened by means of the second central screw 16 . The rotor housing 2 contains the left pedal crank, which is provided with the pedal hole 17 at the distal end, in that the rot...

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Abstract

An electric auxiliary drive for bicycles includes an electric motor having a stator which is connected to a bicycle frame. A rotor is connected to a rotatable part of a bottom bracket of a bicycle on a left-hand side in a direction of travel. The rotor has a magnet. A control device adjusts the power of the electric motor with a control circuit arrangement. A torque sensor is connected to the control circuit arrangement. The rotor is arranged in a co-rotating housing which is connected to a pedal crank and which is arranged on a bottom bracket shaft in an interlocking manner. The stator is arranged in a housing connected to the bicycle frame and secured against rotation.

Description

technical field [0001] The invention relates to an electric auxiliary bicycle drive. The field of application of the invention is bicycles with an auxiliary drive which acts in a manpower-supported or pedal-independent manner depending on suitable parameters such as the crank power applied to the force transmission element. Background technique [0002] Various configurations of such auxiliary drives are known. The advantage of in-wheel motors lies in power reuse, ie the ability to return energy, for example when going downhill. The center shaft electric motor has the advantage that it can act directly on the crank drive and can therefore be operated efficiently in a relatively large torque range via the electrical circuits already present on the bicycle. Center shaft motors also have the advantage that conventional bicycles can be retrofitted with a center shaft motor more easily than with hub motors, since when using hub motors at least one wheel on a conventional bicycl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/10B62M6/55H02K5/04H02K5/10H02K5/173
Inventor 塞巴斯蒂安·费特克
Owner PENDIX