Vibration motor

Patent metadata

Field	Value
Publication number	US-2020044530-A1
Application number	US-201916526965-A
Country	US
Kind code	A1
Filing date	Jul 30, 2019
Priority date	Aug 3, 2018
Publication date	Feb 6, 2020
Grant date	—

Abstract

A vibration motor includes a housing, and a stator, a vibrator, and an elastic support component elastically supporting the vibrator that are accommodated in the housing. The housing includes a top wall, a bottom wall disposed opposite the top wall and a side wall, the stator includes a first coil, a second coil and an iron core disposed corresponding to the coil, the first the coil and the second coil are sleeved over the iron core respectively from two ends of the iron core, the vibrator is sleeved around the stator and spaced from the stator, the elastic support component supports the vibrator to axially vibrate, the top wall is provided with a through hole running through the top wall, the first coil is provided with a coil lead wire, and the coil lead wire extends from the through hole to the exterior of the housing.

First claim

What is claimed is:

1 . A vibration motor, comprising a housing; and a stator, a vibrator, and an elastic support component elastically supporting the vibrator that are accommodated in the housing;
wherein the housing comprises a top wall, a bottom wall disposed opposite the top wall, and a side wall connecting the top wall and the bottom wall; wherein the stator comprises a first coil disposed on the top wall, a second coil disposed on the bottom wall, and an iron core disposed corresponding to the coil; the first the coil and the second coil are sleeved over the iron core respectively from two ends of the iron core, the vibrator is sleeved around the stator and spaced from the stator, the elastic support component supports the vibrator to axially vibrate; the top wall is provided with a through hole running through the top wall, the first coil is provided with a coil lead wire, and the coil lead wire extends from the through hole to the exterior of the housing.

2 . The vibration motor according to claim 1 , wherein the through hole is provided within an orthographic projection of the first coil on the top wall, and the coil lead wire extends vertically from an edge of the first coil toward the top wall and runs through the through hole.

3 . The vibration motor according to claim 1 , wherein the vibrator comprises a magnet steel, a first pole core disposed at one side of the magnet steel close to the top wall, and a second pole core disposed on the other side of the magnet steel close to the bottom wall.

4 . The vibration motor according to claim 3 , wherein the elastic support component comprises a ring-shaped spring plate; and the spring plate comprises an outer ring connected to the housing, an inner ring connected to the vibrator, and a connecting ring connecting the outer ring and the inner ring.

5 . The vibration motor according to claim 4 , wherein one side of the second pole core abuts against a bottom side of the magnet steel, and the other side of the second pole core is connected to the inner ring of the spring plate.

6 . The vibration motor according to claim 5 , wherein the elastic support component further comprises a first fixing ring and a second fixing ring that fix the spring plate through clamping; and the outer ring of the spring plate is sandwiched between the first fixing ring and the second fixing ring, and connected to the housing by using the first fixing ring and the second fixing ring.

7 . The vibration motor according to claim 6 , wherein the housing comprises:
an upper housing having the top wall and the side wall, and a lower housing that matches the upper housing to define an accommodation space; wherein the lower housing comprises the bottom wall and a crimping extending from the bottom wall toward the top wall, and the crimping abuts against an inner outer surface of the side wall, and the elastic support component is lapped on the crimping.

8 . The vibration motor according to claim 1 , wherein the stator further comprises a spacer disposed between the first coil and the second coil.

9 . The vibration motor according to claim 1 , further comprising a flexible circuit board disposed on the bottom wall and electrically connected to the second coil.

Assignees

• Aac Technologies Pte Ltd

Inventors

• Zhang Tao
• Huang Jinquan
• Ling Fanghua

Classifications

• H02K33/10 Primary

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

• H02K33/16 Primary

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