Linear motor

Patent metadata

Field	Value
Publication number	US-10340781-B2
Application number	US-201715412894-A
Country	US
Kind code	B2
Filing date	Jan 23, 2017
Priority date	Jul 21, 2016
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

A linear motor is disclosed. The linear motor includes a housing; a vibrating assembly arranged in the housing, the vibrating assembly including a weight and a plurality of coils connecting with the weight; a magnet assembly connecting with the housing, the magnet assembly including a main magnet and a side magnet; and an elastic connecting piece supporting the vibrating assembly in the housing elastically. The coils are arranged around the main magnet; and the side magnet is arranged adjacent to peripheries of the coils.

First claim

What is claimed is:

1. A linear motor comprising:
a housing;
a vibrating assembly arranged in the housing, the vibrating assembly including a weight and a plurality of coils connecting with the weight;
a magnet assembly connecting with the housing, the magnet assembly including a main magnet and a side magnet; and
an elastic connecting piece supporting the vibrating assembly in the housing elastically; wherein
the coils are arranged around the main magnet; and the side magnet is arranged adjacent to peripheries of the coils;
wherein the elastic connecting piece comprises a main body part for fixing the coils and an elastic connecting part extending respectively from two sides of the main body part; and the elastic connecting part is connected with the housing.

2. The linear motor as described in claim 1 , wherein the main magnet comprises two magnets such configured that the same magnetic poles thereof are opposed to each other.

3. The linear motor as described in claim 2 further including soft magnetic materials arranged between the two main magnets.

4. The linear motor as described in claim 1 , wherein the housing has a long side and a short side connecting with the long side; and the side magnet is arranged along with the short side of the housing.

5. The linear motor as described in claim 1 , wherein the main body part is further provided with an accommodation hole for at least partially receiving the main magnet.

6. The linear motor as described in claim 5 , wherein the elastic connecting part is provided with an avoidance hole for at least partially receiving the second side magnet.

7. The linear motor as described in claim 6 , wherein the avoidance hole is formed by two elastic arms extending from the main body part; and two elastic arms are arranged symmetrically.

8. The linear motor as described in claim 6 , wherein the coil has a long shaft and a short shaft; and the weight are connected with the short shaft of the coil and is provided with a through hole for at least partially receiving the second side magnet.

9. The linear motor as described in claim 1 , wherein the side magnet is further provided with a soft magnetic material.

Assignees

• Guo Shun
• Mao Lubin
• Chen Zhaoxian
• Aac Technologies Pte Ltd

Inventors

• Guo Shun
• Mao Lubin
• Chen Zhaoxian

Classifications

• H02K1/34

  Reciprocating, oscillating or vibrating parts of the magnetic circuit · 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

• H02K1/17

  Stator cores with permanent magnets · CPC title

• H02K5/04

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

• H02K33/16 Primary

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