Linear vibration motor

Patent metadata

Field	Value
Publication number	US-10312788-B2
Application number	US-201715412865-A
Country	US
Kind code	B2
Filing date	Jan 23, 2017
Priority date	Jul 21, 2016
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

A linear vibration motor is disclosed. A linear vibration motor includes a housing with an accommodation space, a main magnetic circuit system accommodated in the housing, and a plurality of elastic components each including a first elastic component and a second elastic component separated and opposite to each other. The first elastic component and the second elastic component are electrically connected with an exterior circuit. The motor further includes a vibration module suspended by the elastic components and including a weight connected to the elastic components and a voice coil connected to the elastic components. The voice coil is disposed around the main magnetic circuit system and comprises an inlet terminal electrically connected with the first elastic component and an outlet terminal electrically connected with the second elastic component.

First claim

What is claimed is:

1. A linear vibration motor comprising:
a housing with an accommodation space;
a main magnetic circuit system accommodated in the housing;
a plurality of elastic components including a first elastic component and a second elastic component separated and opposite to each other, the first elastic component and the second elastic component being electrically connected with an exterior circuit;
a vibration module suspended by the elastic components and including a weight connected to the elastic components and a voice coil connected to the elastic components; wherein
the voice coil is disposed around the main magnetic circuit system and comprises an inlet terminal electrically connected with the first elastic component and an outlet terminal electrically connected with the second elastic component; and
each of the first elastic component and the second elastic component includes a first fixation part connecting the voice coil, a second fixation part extended from the first fixation part for fixing the weight, a deforming part extended from the first fixation part for producing elastic deformation and a third fixation part extended from the deforming part for fixing to the housing; the deforming part is installed around the second fixation part and separated from the second fixation part; two first fixation parts are connected respectively with the inlet terminal and the outlet terminal of the voice coil.

2. The linear vibration motor as described in claim 1 further comprising two fixation components fixed in the housing, wherein the two third fixation parts are connected respectively with the housing through the fixation components.

3. The linear vibration motor as described in claim 2 further comprising a conductive block installed on each of the fixation component, wherein the first elastic component and the second elastic component are electrically connected with the exterior circuit through the conductive blocks.

4. The linear vibration motor as described in claim 3 further comprising a flexible circuit board located in the housing, wherein the first elastic component and the second elastic component are electrically connected with an exterior circuit through the flexible circuit board.

5. The linear vibration motor as described in claim 4 , wherein each of the conductive blocks comprises a conductive block body, a first lug, and a second lug extending vertically from both ends of the conductive block body; the first lug is located at the end close to the voice coil and the second lug is located at the end far from the voice coil; the first lug is connected with the flexible circuit board.

6. The linear vibration motor as described in claim 1 comprising two weights each including a weight body, a slot located at the weight body at an end close to the voice coil, and a lug located on the weight body, wherein the two slots of the respective two weights are arranged opposite to each other, two ends of the voice coil are located respectively in the two slots, and the lugs are located respectively between the second fixation part and the deforming part.

7. The linear vibration motor as described in claim 1 , wherein the main magnetic circuit system comprises two main magnets with the same magnetic poles thereof facing to each other.

8. The linear vibration motor as described in claim 7 , wherein a first pole plate is sandwiched by the two first magnets.

9. The linear vibration motor as described in claim 7 further comprising a secondary magnetic circuit system located on both sides of the main magnetic circuit system, wherein the secondary magnetic circuit system comprises four secondary magnets divided into two groups each including two secondary magnets with the same magnetic poles thereof facing to each other, and further, the magnetic pole of the secondary magnet facing to another secondary magnet is different from the magnetic pole of the main magnet facing another main magnet.

10. The linear vibration motor as described in claim 7 further comprising a second pole plate sandwiched by the two secondary magnets of one group.

11. The linear vibration motor as described in claim 1 further comprising a connecting part fixed with the voice coil through which the voice coil is connected with the weight.

Assignees

• Mao Lubin
• Guo Shun
• Aac Technologies Pte Ltd

Inventors

• Mao Lubin
• Guo Shun

Classifications

• H02K33/16 Primary

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

• H02K3/521

  applicable to stators only · CPC title

• H02K5/04

  Casings or enclosures characterised by the shape, form or construction thereof · CPC title

• G08B6/00

  Tactile signalling systems, e.g. tactile personal calling systems · CPC title

• B06B1/045

  using vibrating magnet, armature or coil system · CPC title