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Hub motor

A wheel hub motor and wheel frame technology, applied in the field of motors, can solve the problems of extra motor cover cost, axial displacement, and affecting the sensing effect of Hall sensing components, etc., to save costs, improve the setting position, and avoid eccentricity The effect of rotation and axial displacement

Inactive Publication Date: 2012-04-04
TAIWAN ELECTRIC PROPULSION SYST CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the conventional brushless DC motor structure (for example, the structure disclosed by Taiwan New Certificate No. M358466), the electromagnet and the Hall sensor assembly are arranged outside the motor body and covered by a motor cover. However, Such an approach requires extra cost for the motor cover. In addition, since the electromagnet is sleeved on the shaft of the motor and rotates with the rotor of the motor, when the stability of the electromagnet setting is not enough, it is easy to follow the motor. During the rotation of the rotor, eccentricity or axial displacement occurs due to shaking, thus affecting the sensing effect of the Hall sensing component

Method used

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] refer to figure 1 , figure 2 A preferred embodiment of the hub motor 100 of the present invention can be arranged on a wheel frame 101 of an electric vehicle. The hub motor 100 includes a rotor unit 1, a magnetic ring 2 disposed on the rotor unit 1, a stator unit 3, A sensing circuit unit 4 disposed on the stator unit 3 , several bearings 51 , 52 and a rotor unit fixing base 6 .

[0019] refer to Figure 1 to Figure 3 The rotor unit 1 is formed with a shaft portion, and the shaft portion is rotatably passed through the stator unit 3. In more detail, the rotor unit 1 includes a rotor housing 11, a rotor output shaft 12 and a plurality of magnets 114. The rotor The housing 11 includes a base wall 111 and a surrounding wall 112 extending from the base wall 111. The base wall 111 cooperates with the surrounding wall 112 to define an internal sp...

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Abstract

The invention relates to a hub motor comprising a stator unit, a rotor unit, a magnetic ring and a sensing circuit unit. The rotor unit is provided with a shaft part which can be relatively and rotatably penetrates through the stator unit; the magnetic ring and the sensing circuit unit are arranged on the rotor unit and the stator unit respectively and are correspondingly positioned at intervals between the rotor unit and the stator unit; and the magnetic ring is provided with a first ring piece extending radially and a second ring piece which is connected with the first ring piece and extends axially. With the structural design of the magnetic ring, the problems of eccentric rotation and axial displacement generated in the process that the magnetic ring rotates with the rotor unit can beavoided; and as the magnetic ring and the sensing circuit unit are arranged between the rotor unit and the stator unit and are wrapped and fixed by both the rotor unit and the stator unit, on the onehand, the structure stability that the magnetic ring is combined with the rotor unit is increased so as to resist the centrifugal force generated by high speed rotation, and on the other hand, the magnetic ring can be prevented from being polluted and interfered by the outside, and the cost for additional arrangement of an outer cover is saved.

Description

technical field [0001] The invention relates to a motor, in particular to a DC brushless hub motor. Background technique [0002] In the conventional brushless DC motor structure (for example, the structure disclosed by Taiwan New Certificate No. M358466), the electromagnet and the Hall sensor assembly are arranged outside the motor body and covered by a motor cover. However, Such an approach requires extra cost for the motor cover. In addition, since the electromagnet is sleeved on the shaft of the motor and rotates with the rotor of the motor, when the stability of the electromagnet setting is not enough, it is easy to follow the motor. During the rotation of the rotor, eccentricity or axial displacement occurs due to shaking, thus affecting the sensing effect of the Hall sensing component. Contents of the invention [0003] The purpose of the present invention is to provide a DC brushless motor which solves the aforementioned defects, and the DC brushless motor is used...

Claims

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Application Information

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IPC IPC(8): H02K29/06H02K1/22H02K1/12
Inventor 彭金盛游钧敦陈汝城李崇智
Owner TAIWAN ELECTRIC PROPULSION SYST CORP
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