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1. US20200212781 - Linear Vibration Motor

Office
United States of America
Application Number 16705263
Application Date 06.12.2019
Publication Number 20200212781
Publication Date 02.07.2020
Publication Kind A1
IPC
H02K 33/18
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
33Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
18with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
CPC
B06B 1/045
BPERFORMING OPERATIONS; TRANSPORTING
06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, ; e.g.; FOR PERFORMING MECHANICAL WORK IN GENERAL
1Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
02making use of electrical energy
04operating with electromagnetism
045using vibrating magnet, armature or coil system
H02K 33/18
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
33Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
18with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
Applicants AAC Technologies Pte. Ltd.
Inventors Yun Tang
Lubin Mao
Title
(EN) Linear Vibration Motor
Abstract
(EN)

An embodiment of the invention provides a linear vibration motor. The linear vibration motor includes a base, a vibration unit, an elastic piece and a coil assembly. The vibration unit includes a weight, a containing groove penetrating the weight, and two magnets arranged in the containing groove. The elastic piece is located on one side of the vibration unit and is connected with the vibration unit. The coil assembly has an iron core and a coil wound around the iron core. The two magnets are magnetized such that the magnetic poles of the two magnets are oppositely arranged. The magnetizing direction of the coil assembly is perpendicular to the vibration direction and is parallel to the connecting line of the two magnets. Compared with the related art, the linear vibration motor is improved in vibration performance and reliability.

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