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Motor

A technology of electric motor and circuit board, applied in the field of electric motor

Pending Publication Date: 2021-06-15
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem that in order to generate the indication signal, a separate device should be installed to correspond to the motor

Method used

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Embodiment Construction

[0027] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

[0028] However, the technical spirit of the present invention is not limited to some embodiments to be described, and can be implemented using various other embodiments, and at least one component of the embodiments can be selectively coupled, replaced, and used within the scope of the technical spirit To realize the spirit of technology.

[0029] In addition, unless the context clearly and clearly defines otherwise, all terms (including technical terms and scientific terms) used herein can be interpreted in the meanings commonly understood by those skilled in the art, and commonly used terms (such as in the general dictionary The meaning of the terms defined in ) will be interpreted in consideration of the meaning in the context of the related art.

[0030] In addition, the terms used in the embodiments of the present invention are considered to...

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Abstract

The present invention can provide a motor comprising: a rotary shaft; a yoke coupled to the rotary shaft; a stator disposed between the rotary shaft and the yoke; a first magnet and a second magnet disposed at the yoke; and a circuit board on which a first hall sensor disposed to correspond to the first magnet and a second hall sensor disposed to correspond to the second magnet are disposed, wherein the second magnet includes a plurality of split magnets and one index magnet, the circumferential width of the split magnet is the same as the circumferential width of the index magnet, the split magnet and the index magnet are respectively formed by combining a first pole and a second pole, the circumferential width of the first pole of the split magnet is the same as the circumferential width of the second pole thereof, and the circumferential width of the first pole of the index magnet is different from the circumferential width of the second pole thereof.

Description

technical field [0001] The invention relates to an electric motor. Background technique [0002] An electric motor may include a rotor, a stator and a rotating shaft. The rotating shaft is coupled with the rotor. The rotor can be arranged outside the stator. Due to the electromagnetic interaction between the rotor and the stator, the rotor rotates, and when the rotor rotates, the rotating shaft rotates. [0003] Such a motor may be used as a drive source configured to rotate a sensor device such as a light detection and ranging (LiDAR) device. The rotating shaft of the electric motor is connected to the sensor device. In order to ensure the performance of the sensor device, it is necessary to drive the motor at a constant speed. In addition, a plurality of sensor devices may be provided, and a plurality of motors may be provided corresponding to the plurality of sensor devices, and in order to synchronize the positions of the sensor devices, an instruction signal is req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/22H02K11/215H02K11/30
CPCH02K11/30H02K11/215G01D5/145G01D5/142H02K5/22H02K29/08H02K2211/03H02K2213/03
Inventor 金镇龙
Owner LG INNOTEK CO LTD
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