# US 2018/0026510 A1 · Linear Motor

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- Number: US 2018/0026510 A1
- Document ID: US20180026510A1
- Status: Published application
- Kind: A1
- Application number: 15/412,894
- Filed: 2017-01-23
- Published: 2018-01-25
- Earliest claimed: 2016-07-21
- Assignees: AAC Technologies Pte. Ltd.
- Inventors: Shun Guo; Lubin Mao; Zhaoxian Chen
- Web page: https://patentgrep.com/patent/US20180026510A1

## CPC

- H02K 33/18: with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
- H02K 1/17: Stator cores with permanent magnets
- H02K 1/34: Reciprocating, oscillating or vibrating parts of the magnetic circuit
- H02K 5/04: Casings or enclosures characterised by the shape, form or construction thereof
- H02K 33/16: with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 3)

The linear motor as described in claim 3, 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.

### Claim 5 (depends on 4)

The linear motor as described in claim 4, wherein the main body part is further provided with an accommodation hole for at least partially receiving the main magnet.

### Claim 6 (depends on 1)

The linear motor as described in claim 1, wherein the elastic connecting part is provided with an avoidance hole for at least partially receiving the second side magnet.

### Claim 7 (depends on 6)

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.

### Claim 8 (depends on 6)

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.

### Claim 9 (depends on 1)

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

### Claim 10 (depends on 1)

The linear motor as described in claim 1 further including soft magnetic materials arranged between the two main magnets.