Novel central-positioned motor for electric bicycle

A technology for electric bicycles and mid-mounted motors, applied in the direction of electromechanical devices, electric components, electrical components, etc., can solve problems such as unresolved installation and maintenance troubles, and achieve convenient installation and maintenance, convenient disassembly and reinstallation, and increased torque. big effect

Inactive Publication Date: 2012-04-11
TIANJIN VOCATIONAL & TECHNICAL COLLEGE OF MECHANICAL & ELECTRICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a mid-mounted motor still does not solve the troublesome problems of installation and maintenance

Method used

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  • Novel central-positioned motor for electric bicycle
  • Novel central-positioned motor for electric bicycle
  • Novel central-positioned motor for electric bicycle

Examples

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Embodiment Construction

[0016] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0017] See figure 1 with figure 2 , the present invention includes an electric drive section, a deceleration section and a clutch section, and the center shaft 3 passes through the center of each section. The electric driving section includes a motor casing 11 , a stator core 12 and nine permanent magnets 19 arranged on its inner wall, and a rotor core 20 pierced inside the stator core 12 . A motor end cover 13 is also arranged at the rear part of the motor housing 11 , and a bearing 4 is arranged on the motor end cover 13 , and the inner ring of the bearing 4 is fixedly connected on the central shaft 3 . The deceleration section includes a reducer housing 10 and its internal planetary gear mechanism. The inner wall of the reducer housing ...

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Abstract

The invention relates to a novel central-positioned motor for an electric bicycle. The motor comprises an electric driving section, a braking section and a clutch section and a middle shaft penetrates through centers of all the sections. The electric driving section comprises a motor shell, and a stator iron core and a permanent magnet which are arranged on the inner wall of the motor shell; and the electric driving section further comprises a rotor iron core which is arranged inside the stator iron core in a penetrating way; the braking section comprises a speed reducer shell and a planetary gear mechanism which is arranged inside the speed reducer shell; the inner wall of the speed reducer shell is provided with a gear ring and the planetary gear mechanism comprises a planetary frame, a sun wheel and three planetary wheels which are arranged on the periphery of the mechanism; the clutch section is an overrunning clutch and comprises a clutch jacket, and a clutch planetary wheel and a planetary frame star wheel which are arranged in the clutch jacket in parallel, wherein the sun wheel is arranged inside the rotor iron core in a penetrating way and is in a key connection with the rotor iron core; the planetary frame star wheel is fixedly connected with the center of the planetary frame and the center shaft sequentially penetrates through the rotor iron core, the sun wheel, the planetary frame, the planetary frame star wheel and the clutch star wheel and is in the key connection with the clutch star wheel. In the invention, by combining a pedal shaft and a motor shaft into a whole, the really useful central-positioned motor is realized.

Description

technical field [0001] The invention relates to a novel central motor for an electric bicycle. Background technique [0002] As electric bicycles become more and more popular, people put forward higher requirements for their structure and power performance. Most of the popular electric bicycles on the market now use hub motors, which are installed on the front wheel shaft or the rear wheel shaft of the bicycle, and are called front drive and rear drive respectively. The hub motor is an outer rotor, and the rotor and the motor housing are combined together. When the rotor rotates, it drives the motor housing to rotate, and the electric bicycle wheel also rotates. But compared with traditional bicycles, the front-drive and rear-drive modes do not meet people's daily riding habits, and the mode that people are familiar with is the mid-drive mode driven by the middle sprocket. Therefore, in order to solve this problem, people have developed a mid-mounted motor, which is instal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/10H02K7/116
Inventor 张绍忠李卫兵赵华张猛
Owner TIANJIN VOCATIONAL & TECHNICAL COLLEGE OF MECHANICAL & ELECTRICAL ENG
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