Linear motor

Patent metadata

Field	Value
Publication number	US-10284067-B2
Application number	US-201715412840-A
Country	US
Kind code	B2
Filing date	Jan 23, 2017
Priority date	Jul 21, 2016
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A linear motor includes a housing; a vibrating assembly arranged in the housing, the vibrating assembly including coils, a weight and a connecting piece connecting the coils with the weight; a magnet assembly connecting with the housing, the magnet assembly including a first magnet group and a second magnet group; a magnetic gap formed between the first magnet group and the second magnet group for at least partially receiving the coils; and an elastic connecting piece supporting the vibrating assembly in the housing elastically. The first magnet group and the second magnet group comprise at least one pair of magnets which are arranged oppositely to each other and have opposite magnetizing directions; and magnetizing directions of the magnets at the corresponding locations in the first magnet group and the second magnet group are the same.

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 coil, weights and a connecting piece connecting the coil with the weights;
a magnet assembly connecting with the housing, the magnet assembly including a first magnet group and a second magnet group respectively arranged on two sides of a plane where the coil is arranged;
a magnetic gap formed between the first magnet group and the second magnet group for at least partially receiving the coil;
elastic connecting pieces supporting the vibrating assembly in the housing elastically; wherein
the first magnet group and the second magnet group comprise at least one pair of magnets which are arranged oppositely to each other and have opposite magnetizing directions; and magnetizing directions of the magnets at the corresponding locations in the first magnet group and the second magnet group are the same;
the connecting piece comprises an accommodation part arranged in the magnetic gap and fixation parts extending out of the magnetic gap from the accommodation part, the coil is accommodated in the accommodation part, and the weights are fixed on the fixation parts, and
the connecting piece comprises two connecting units which are arranged symmetrically opposite to the plane where the coil is arranged, each connecting unit comprises a supporting plate arranged in the magnetic gap and a plurality of bending boards respectively extending from two ends of the supporting plate, the accommodation part is formed by a gap between two supporting plates; the coil is arranged in the accommodation part and connected with the supporting plates, and the fixation parts are formed by two bending boards of the two connecting units arranged on identical sides of the supporting plates jointly.

2. The linear motor as described in claim 1 , wherein each elastic connecting piece is arranged between two opposite magnets of one of the first magnet group or the second magnet group, and includes a first elastic branch and a second elastic branch.

3. The linear motor as described in claim 2 , wherein the fixed ends of the first elastic branch and the second elastic branch are formed integrally.

4. The linear motor as described in claim 3 , wherein the first elastic branch and the second elastic branch are arranged symmetrically opposite to the fixed end.

5. The linear motor as described in claim 4 , wherein the first elastic branch is in the form of wave.

Assignees

• Guo Shun
• Mao Lubin
• Aac Technologies Pte Ltd

Inventors

• Guo Shun
• Mao Lubin

Classifications

• H02K33/16 Primary

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

• H02K1/34

  Reciprocating, oscillating or vibrating parts of the magnetic circuit · CPC title

• H02K1/17

  Stator cores with permanent magnets · 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

• H02K5/04

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