Vibration motor

Patent metadata

Field	Value
Publication number	US-10220412-B2
Application number	US-201615297494-A
Country	US
Kind code	B2
Filing date	Oct 19, 2016
Priority date	Nov 20, 2015
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A vibration motor is provided. The vibration motor includes a shell, a vibrating component disposed in the shell, coils secured in the shell and elastic connectors which are used to support the vibrating component elastically. The vibrating component comprises a mass block, a first magnet steel assembly and a second magnet steel assembly received in the mass block. The coils comprise a first coil disposed opposite to the first magnet steel assembly and a second coil disposed opposite to the second magnet steel assembly. The driving force generated by the first magnet steel assembly and the first coil can drive the vibration motor to vibrate along a first direction, while the driving force generated by the second magnet steel assembly and the second coil can drive the vibration motor to vibrate along a second direction, wherein the first direction and the second direction intersects to each other.

First claim

What is claimed is:

1. A vibration motor, comprising a shell, a vibrating component disposed in the shell, coils secured in the shell and elastic connectors which are used to support the vibrating component elastically; wherein the vibrating component comprises a mass block, a first magnet steel assembly and a second magnet steel assembly received in the mass block; the coils comprise a first coil disposed opposite to the first magnet steel assembly and a second coil disposed opposite to the second magnet steel assembly; the driving force generated by the first magnet steel assembly and the first coil can drive the vibration motor to vibrate along a first direction, while the driving force generated by the second magnet steel assembly and the second coil can drive the vibration motor to vibrate along a second direction, wherein the first direction and the second direction intersects to each other.

2. The vibration motor of claim 1 , wherein, the magnetization direction of the first magnet steel assembly is perpendicular to the first direction and the magnetization direction of the second magnet steel assembly is perpendicular to the second direction.

3. The vibration motor of claim 1 , wherein, the magnetization direction of the first magnet steel assembly is perpendicular to the first direction and the magnetization direction of the second magnet steel assembly is perpendicular to the second direction.

4. The vibration motor of claim 1 , wherein, the shell comprises a first side wall and a second side wall opposite to each other, the first direction is parallel to the extension direction of the first side wall and the second side wall, the first direction and the second direction are perpendicular to each other.

5. The vibration motor of claim 4 , wherein, the elastic connectors are provided in pair, disposed at two ends of the mass block respectively so as to secure the mass block to the shell.

6. The vibration motor of claim 5 , wherein, the elastic connectors comprises a first elastic connector and a second elastic connector; the first elastic connector is connected at one end with the first side wall of the shell and is connected at the other opposite end with the surface of the mass block facing the second side wall; the second elastic connector is connected at one end with the second side wall of the shell and is connected at the other opposite end with the surface of the mass block facing the first side wall.

7. The vibration motor of claim 6 , wherein, the first elastic connector has the same structure as the second elastic connector.

8. The vibration motor of claim 6 , wherein, both the first elastic connector and the second elastic connector have U-shaped structures.

9. The vibration motor of claim 6 , wherein, the vibration motor also comprises several damping elements disposed around the mass block.

10. The vibration motor of claim 9 , wherein, the damping elements comprises two first damping elements, the two first damping elements are disposed between the mass block and the first side wall, and between the mass block and the second side wall, symmetrically.

11. The vibration motor of claim 10 , wherein, each of the first damping elements has an embedded portion embedded in the mass block and snap-fitted with the mass block; there are gaps between the first side wall or the second side wall and the surfaces of the first damping elements facing the first side wall or the second side wall.

12. The vibration motor of claim 11 , wherein, the surfaces of the first damping elements facing the first side wall or the second side wall are arc-shaped.

13. The vibration motor of claim 11 , wherein, the latching positions of the first damping elements and the mass block are opposite to the second magnet steel assembly.

14. The vibration motor of claim 10 , wherein, the damping elements also comprises two second damping elements, the two second damping elements are disposed at two ends of the mass block symmetrically.

15. The vibration motor of claim 14 , wherein, the first elastic connector and the second elastic connector are crossed to each other so that there is an accommodation space among the first elastic connector, the second elastic connector and the mass block, and the second damping element is disposed in the accommodation space.

Assignees

• Mao Lubin
• Hou Fei
• Aac Technologies Pte Ltd

Inventors

• Mao Lubin
• Hou Fei

Classifications

• H02K2201/18

  Machines moving with multiple degrees of freedom · CPC title

• H02K33/16

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

• B06B1/045 Primary

  using vibrating magnet, armature or coil system · CPC title