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Electric bicycle hub motor

A technology of electric bicycles and wheel hub motors, which is applied in the direction of electric components, electromechanical devices, electrical components, etc., can solve the problems of small output torque, unsightly, complex appearance, etc., and achieve the effect of increasing output torque and large reduction ratio

Active Publication Date: 2016-04-13
BAFANG ELECTRIC (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The planetary reduction mechanism used in this wheel hub motor has the disadvantages of small reduction ratio and small output torque.
[0003] Moreover, the traditional wheel hub motor can only be used in conjunction with an external transmission due to its functional and structural limitations.

Method used

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  • Electric bicycle hub motor
  • Electric bicycle hub motor
  • Electric bicycle hub motor

Examples

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Effect test

Embodiment Construction

[0025] figure 1 A specific embodiment of the electric bicycle hub motor of the present invention is shown, which includes a horizontally arranged main shaft 1, on which a hub shell 2 that can rotate around the main shaft is installed through a bearing (not marked in the figure), the hub The housing 2 is composed of a housing body 2a and a housing end cover 2b which are fixed to each other. The hub shell 2 is provided with a stator 3, a rotor 4 and a gear reduction mechanism, wherein the stator is fixed on the main shaft 1, and this example adopts an outer rotor inner stator structure.

[0026] The first key improvement point of this embodiment is that the structure of the gear reduction mechanism is completely different from that of the traditional gear reduction mechanism, as follows:

[0027] The gear reduction mechanism in this example is mainly composed of rotor gear 5 , planetary carrier 6 , planetary shaft 7 , left planetary gear 8 , right planetary gear 9 and sun gear ...

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PUM

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Abstract

An electric-bike hub motor comprises a horizontally arranged spindle (1), a hub shell (2) that is rotatably mounted outside the spindle (1), a stator (3) and a rotor (4) that are arranged inside the hub shell (2), and a gear speed reduction mechanism. The stator (3) secured on the spindle (1). The gear speed reduction mechanism comprises a rotor gear (5) that is secured to the rotor (4) and arranged coaxially outside the spindle (1), a planetary carrier (6) that is secured on the spindle (1), a planetary shaft (7) that goes rotatably through the planetary carrier (6). The left planetary gear (8) and a right planetary gear (9) that are secured on the planetary shaft (7), and a sun gear (10) that is secured to the hub shell (2) and arranged coaxially outside the spindle (1), wherein the left planetary gear (8) engages with the rotor gear (5), and the right planetary gear (9) engages with the sun gear (10). The electric-bike hub motor means has a large output torque and internal transmission function.

Description

technical field [0001] The invention relates to a hub motor, which is suitable for electric vehicles, especially electric bicycles. Background technique [0002] Existing common in-wheel motors are generally composed of main shaft, winding stator, rotor, sun gear, reduction assembly, hub shell, planetary reduction mechanism and one-way clutch and other components. For its detailed structure, please refer to its structural patent number ZL201220268825.8 Chinese utility model patents. When the motor is energized and working, the power source generated by the wound stator and the rotor drives the rotor to rotate, and the rotor gear on the rotor drives the planetary reduction system and the one-way clutch to rotate, and the torque is directly transmitted to the hub through the inner ring gear fixed on the hub, so that the hub rotate. The planetary reduction mechanism adopted by the in-wheel motor has the disadvantages of small reduction ratio and small output torque. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/00H02K7/116B62M11/14
CPCB62M6/60B62M11/14H02K7/083H02K7/116H02K7/14
Inventor 贺先兵王海华周奇丁俊徐大军
Owner BAFANG ELECTRIC (SUZHOU) CO LTD
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