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1. US20200212775 - Linear Vibration Motor

Office
United States of America
Application Number 16705266
Application Date 06.12.2019
Publication Number 20200212775
Publication Date 02.07.2020
Publication Kind A1
IPC
H02K 33/10
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
33Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
02with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
10wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures
CPC
H02K 33/10
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
33Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
02with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
10wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures
Applicants AAC Technologies Pte. Ltd.
Inventors Yun Tang
Lubin Mao
Title
(EN) Linear Vibration Motor
Abstract
(EN)

The present invention provides a linear vibration motor, including a base with an accommodating space, and a vibration unit located in the accommodating space. The vibration unit includes a weight, a containing groove, and a number of coil assemblies in the containing groove. The motor further includes a magnet at least partially accommodated in the containing groove and disposed opposite to the coil assembly, and an elastic piece for suspending the vibration unit. The coil assembly includes an iron core and a coil wound around the iron core. The magnet is magnetized along the vibrating direction, the coil assembly is magnetized along a direction perpendicular to the vibration direction, and the magnetic poles of the coil assembly adjacent to the magnet are the same and are disposed opposite to each other. By virtue of the configuration disclosed by the present invention, the vibration performance is improved.

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