Linear vibrating motor with coil between a plurality of magnet modules and mass units

Patent metadata

Field	Value
Publication number	US-10312786-B2
Application number	US-201615011497-A
Country	US
Kind code	B2
Filing date	Jan 30, 2016
Priority date	Jul 16, 2015
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

A linear vibrating motor is provided in the present disclosure. The linear vibrating motor includes a housing, a vibrator, a stator and an elastic part. The vibrator and the stator are received in the housing, the elastic part suspends the vibrator. The stator includes a coil and a coil support supporting the coil. The coil support includes a supporting plate, a pair of supporting arms and a pair of supporting legs. The supporting plate supports the coil, the pair of supporting arms extends from ends of the supporting plate respectively, and the pair of supporting legs extends from ends of the supporting arms respectively and is opposite to the supporting plate. The vibrator comprises a groove to receive the supporting plate, and the vibrator is partially positioned between the pair of supporting arms.

First claim

What is claimed is:

1. A linear vibrating motor, comprising:
a housing comprising a bottom plate;
a vibrator received in the housing and vibrating along a vibration direction parallel to the bottom plate;
a stator comprising a coil and a coil support for supporting the coil; and
an elastic part for suspending the vibrator in the housing;
wherein the vibrator comprises a first side surface extending along the vibration direction, a second side surface extending along the vibration direction and opposite to the first side surface, and a groove through the first side surface and the second side surface; the coil support which is received in the housing comprises a supporting plate received in the groove and supporting the coil disposed in the groove, a pair of supporting arms extending to the bottom plate from two opposite ends of the supporting plate and facing the first and second side surfaces of the vibrator respectively, and a pair of supporting legs extending from ends of the supporting arms respectively and fixed on the bottom plate, the pair of supporting legs is opposite to the supporting plate, the vibrator is partially positioned between the pair of the supporting arms.

2. The linear vibrating motor as described in claim 1 , wherein the coil support further comprises a pair of blocking plates extending from the supporting plate in a direction away from the supporting arms, and the coil is located between the blocking plates.

3. The linear vibrating motor as described in claim 1 , wherein the vibrator comprises a mass unit and a magnet module received in the mass unit.

4. The linear vibrating motor as described in claim 3 , wherein the mass unit comprises a first mass member and a second mass member opposite to the first mass member, the first mass member comprises a bottom and two sidewalls extending from two opposite sides of the bottom, the bottom and the two sidewalls cooperatively form the groove, the second mass member is received in the groove and separated from the bottom, the magnet module comprises a first magnet received in the first mass member and a second magnet received in the second mass member, the first magnet and the second magnet are opposite to and keep a distance from each other, the coil is suspended between the first magnet and the second magnet by the coil support.

5. The linear vibrating motor as described in claim 4 , wherein the second mass member is located between the pair of the supporting arms of the coil support.

6. The linear vibrating motor as described in claim 5 , wherein a distance between the pair of the supporting arms of the supporting plate is not less than a width of the second mass member, and a height of the supporting arms is not less than thickness of both the second mass member and the second magnet.

7. The linear vibrating motor as described in claim 1 , wherein the supporting legs have a same width as the supporting plate.

Assignees

• Xu Hongfu
• Chai Zhilin
• Wu Na
• Aac Technologies Pte Ltd

Inventors

• Xu Hongfu
• Chai Zhilin
• Wu Na

Classifications

• H02K33/10

  wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures · CPC title

• H02K7/1876

  with reciprocating, linearly oscillating or vibrating parts · CPC title

• H02K33/18 Primary

  with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets · CPC title

• H02K33/02

  with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs · CPC title

• H02K33/00

  Motors with reciprocating, oscillating or vibrating magnet, armature or coil system (arrangements for handling mechanical energy structurally associated with motors H02K7/00, e.g. H02K7/06) · CPC title