Vibration motor

Patent metadata

Field	Value
Publication number	US-10038360-B2
Application number	US-201615070115-A
Country	US
Kind code	B2
Filing date	Mar 15, 2016
Priority date	Jul 31, 2015
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A vibration motor includes a cover; a substrate forming an accommodation space together with the cover; a vibrator received in the accommodation space, the vibrator including a first driver and a second driver; a plurality of elastic members suspending the vibrator in the accommodation space; a third driver mounted on the substrate for generating a first force cooperatively with the first driver to drive the vibrator to vibrate along a first direction; and a fourth driver mounted on the substrate for generating a second force cooperatively with the second driver to drive the vibrator to vibrate along a second direction.

First claim

What is claimed is:

1. A vibration motor, comprising:
a cover;
a substrate forming an accommodation space together with the cover;
a vibrator received in the accommodation space, the vibrator including a first driver and a second driver;
a plurality of elastic members suspending the vibrator in the accommodation space;
a third driver mounted on the substrate for generating a first force cooperatively with the first driver to drive the vibrator to vibrate along a first direction;
a fourth driver mounted on the substrate for generating a second force cooperatively with the second driver to drive the vibrator to vibrate along a second direction;
wherein the first driver is a first magnet, the second driver is a second magnet, the third driver is a first coil, and the fourth driver is a second coil;
the vibrator includes a weight provided with a first hole and a second hole, the first magnet received in the first hole, and the second magnet received in the second hole;
and the first direction is unparallel with the second direction.

2. The vibration motor as described in claim 1 , wherein the elastic members are springs with one end connected to the vibrator and another end connected to the cover.

3. The vibration motor as described in claim 1 , wherein the elastic member includes a first fixing part connecting to the vibrator, a second fixing part connecting to the cover, and an elastic arm connecting the first fixing part to the second fixing part.

4. The vibration motor as described in claim 3 , wherein the elastic arm includes a first arm obliquely extending from the first fixing part, and a second arm extending obliquely from the first arm.

5. The vibration motor as described in claim 3 , wherein the first fixing part includes a first part and a second part respectively connected to two adjacent sides of the vibrator.

6. The vibration motor as described in claim 2 further including a guiding pillar received in a guiding hole formed in the vibrator, wherein the pillar has two ends extending out of the vibrator and connecting to the cover for supporting the vibrator in the accommodation space.

7. The vibration motor as described in claim 6 , wherein the guiding hole provides a space for the vibrator to vibrate relative to the guiding pillar.

8. The vibration motor as described in claim 1 , wherein the first direction is perpendicular to the second direction.

9. The vibration motor as described in claim 1 , wherein the first magnet is disposed perpendicular to the second magnet.

10. The vibration motor as described in claim 1 , wherein the number of first magnet is two, two first magnets disposed in alignment, the number of second magnet is two, two second magnets disposed in alignment.

11. The vibration motor as described in claim 10 , wherein the first coil is disposed opposite the two first magnets, and the second coil is disposed opposite to the two second magnets.

Assignees

• Wang Hongxing
• Mao Lubin
• Aac Technologies Pte Ltd

Inventors

• Wang Hongxing
• Mao Lubin

Classifications

• H02K33/16

  with polarised armatures moving in alternate directions by reversal or energisation of a single coil system · CPC title

• H02K33/00 Primary

  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

• H02K33/12

  with armatures moving in alternate directions by alternate energisation of two coil systems · CPC title