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Hub driving assembly

A wheel hub drive and assembly technology, applied in the direction of the hub, motion deposition, power device, etc., can solve the problems of large noise of the reducer, insufficient rigidity of the hub bearing, hindering the rotation of the hub, etc., and achieve the effect of a large reduction ratio

Inactive Publication Date: 2016-06-22
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The problem to be solved by the present invention is: the rigidity of the wheel hub bearing in the existing wheel hub drive assembly is insufficient; when the hard object on the road surface is stuck into the inner peripheral surface of the wheel hub during the driving of the vehicle, the hard object will hinder the rotation of the wheel hub and cause damage to the wheel hub. Wear; the reducer cannot obtain a large reduction ratio; the reducer is prone to greater noise and wear when the wheels are running

Method used

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Examples

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Effect test

no. 1 example

[0045] Such as figure 2 As shown, the hub drive assembly of this embodiment includes: a hub 10 , a hub bearing 20 located in the hub 10 , a motor 30 , a reducer 40 , and a housing 50 . Among them, the wheel hub 10 is used to accommodate the components other than the wheel hub 10 in the wheel hub drive assembly; the wheel hub bearing 20 is used to carry the load transmitted from the vehicle body to the wheel; the motor 30 is used to generate the driving torque that drives the wheel hub 10 to rotate; the speed reducer 40 It is used to amplify the driving torque output by the motor 30. Specifically, the output end 31 of the motor 30 extends out of the opening K of the motor cavity 51 and is connected to the input end 41 of the reducer 40, so that the driving torque output by the motor 30 can be input to the reducer. The input terminal of the device 40 to be amplified by it. The casing 50 is used to enclose a motor cavity 51 for accommodating the motor 30 and a reducer cavity 52...

no. 2 example

[0108] The difference between the second embodiment and the first embodiment is that in the second embodiment, the wheel hub bearing is not provided with a special outer ring, but is used as the wheel hub, which simplifies the structure of the wheel hub drive assembly. In the second embodiment, the rolling elements in the hub bearing may directly contact the inner peripheral surface of the hub.

[0109] In the second embodiment, since the hub doubles as the outer ring of the hub bearing, when the vehicle is running, hard objects on the road will not enter the radial inner side of the hub, so no hard objects will be stuck into the inner peripheral surface of the hub , and hinder the rotation of the hub and cause wear and tear on the hub.

[0110] Compared with the second embodiment, the technical solution of the first embodiment has the following advantages: the steps of replacing tires are simpler and more convenient, and the specific analysis is as follows:

[0111] In the s...

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Abstract

A hub driving assembly comprises a hub, a hub bearing, a motor, a speed reducer, a housing and a flexible connecting piece, wherein the hub bearing is positioned in the hub. The hub bearing comprises an outer ring, an inner ring and a rolling body; the housing encloses a motor chamber and a speed reducer chamber; an output end of the motor extends out of an opening of the motor chamber and is connected with an input end of the speed reducer; the motor, the speed reducer and the housing are all positioned on the internal side of the hub bearing in a radial direction; the outer ring is fixedly connected with the hub, or the hub is also used as the outer ring; the inner ring is fixedly connected with the housing; the flexible connecting piece is positioned on one side of the inner ring in an axial direction of the assembly; and the two ends of the flexible connecting piece in a radial direction of the assembly are fixedly connected with both the output end of the speed reducer and the hub, respectively. According to the technical scheme of the invention, problems that the rigidity of the hub bearing in the traditional hub driving assembly is not enough, hard matters may stop the rotation of the hub and damage the hub when the hard matters on a pavement are clamped into the internal circumferential surface of the hub in the vehicle running process, the speed reducer cannot obtain a large speed reduction ratio, and the speed reducer is prone to generate high noise and wear during the running of the wheel are solved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a wheel hub drive assembly. Background technique [0002] An electric vehicle refers to a vehicle that is powered by an on-board power supply and uses a motor to drive the wheels. It includes a hub drive assembly for driving and braking the wheels. The hub drive assembly integrates power, transmission and braking devices into the hub. , thus greatly simplifying the mechanical part of the electric vehicle. [0003] figure 1 It is a simplified schematic diagram of the structure of an existing hub drive assembly, such as figure 1 As shown, the hub drive assembly includes: a hub 1 having an annular body 1b extending in the axial direction of the hub drive assembly, and a spoke 1c extending from one end of the body 1b in a radially inward direction of the hub drive assembly, The tire is used to be installed on the outer peripheral surface of the body 1b; the outer casing 2 located in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60B27/00B60B27/04B60K7/00
Inventor 黄超
Owner SCHAEFFLER TECH AG & CO KG
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