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Hub motor with high torque volume ratio

A technology of hub motor and volume ratio, which is applied in the direction of electrical components, electromechanical devices, electric components, etc. It can solve the problems of uneven distribution of radial force, difficulty in reducing weight, and inability of the output shaft to penetrate.

Pending Publication Date: 2021-12-21
PRAXIS INT PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this kind of electric hub can achieve the purpose of deceleration, because the torque output of the planetary reduction mechanism has a certain positive correlation with the volume, it is difficult to achieve the goal of light weight under a certain torque requirement.
[0005] In addition, the output shaft cannot penetrate to the outside of the hub shell, so that the concentricity between the first fixed shaft and the second fixed shaft is not good, and the distribution of radial force tends to be uneven

Method used

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  • Hub motor with high torque volume ratio
  • Hub motor with high torque volume ratio
  • Hub motor with high torque volume ratio

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same numerals.

[0030] refer to Figure 1 to Figure 3 , The first embodiment of the hub motor with a high torque-to-volume ratio of the present invention includes a shaft member 10 , a hub shell 20 , a motor unit 30 , a cycloid reduction unit 40 and a one-way clutch unit 50 .

[0031] The shaft 10 extends along an axis L. As shown in FIG.

[0032] The hub shell 20 is supported by the shaft 10 and can rotate around the shaft 10, and the hub shell 20 has a body 21, an end cover 22 screwed on one side of the body 21, and two sleeves The bearing 23 between the body 21 , the end cover 22 and the shaft 10 . The body 21 and the end cover 22 jointly define an accommodating space 24, the end cover 22 has an...

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Abstract

The invention relates to a hub motor with a high torsion volume ratio. The hub motor comprises a shaft piece, a hub shell, a motor unit, a cycloid speed reduction unit and a one-way clutch unit. The motor unit comprises an output shaft; the cycloidal speed reduction unit comprises an eccentric block fixed on the output shaft, at least one cycloidal gear driven by the eccentric block, a positioning plate arranged on one side of the cycloidal gear, a plurality of planetary columns positioned on the positioning plate and extending to the cycloidal gear, an outer ring sleeve surrounding the outside of the cycloidal gear and a plurality of rollers installed between the cycloidal gear and the outer ring sleeve. The cycloidal gear is driven by the eccentric block to generate cycloidal type rotation relative to the shaft piece, and the motor unit can be in one-way linkage with the hub shell to rotate through the arrangement of the one-way clutch unit, so that the purpose of light weight can be achieved under a certain torsion requirement.

Description

technical field [0001] The invention relates to a reduction gear, in particular to a wheel hub motor with a high torque volume ratio. Background technique [0002] There is an electric hub (U.S. Patent No. US6974399B2), which includes a hub shell, an electric motor mounted on the hub shell, a planetary reduction mechanism, a large ring gear, a one-way clutch and a one-way bearing. hub end caps. The electric motor includes a stator, a rotor rotating relative to the stator, a first fixed shaft connected to the first end of the stator, a second fixed shaft connected to the second end of the stator, and a The output shaft of the type reduction mechanism. The planetary reduction mechanism has a sun gear connected to the output shaft, a support plate fixed to the motor by bolts and connected to the second fixed shaft, a plurality of pivot rods connected to the support plate, a plurality of shaft devices Planetary gears on said pivot rod, a plurality of pinion gears coaxially co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/116H02K7/10H02K5/04
CPCH02K7/116H02K7/10H02K5/04
Inventor 刘芳玲
Owner PRAXIS INT PTE LTD
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