# US 11,909,289 B2 · Vibration motor with elastic support arm with flange

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,909,289 B2
- Document ID: US11909289B2
- Status: Granted
- Kind: B2
- Application number: 17/533,142
- Filed: 2021-11-23
- Published: 2022-06-30
- Granted: 2024-02-20
- Earliest claimed: 2020-12-25
- Assignees: AAC Microtech (Changzhou) Co., Ltd.
- Applicants: AAC Microtech (Changzhou) Co., Ltd.
- Inventors: Jie Ma; Lubin Mao
- Web page: https://patentgrep.com/patent/US11909289B2

## CPC

- H02K 33/02: with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
- 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

The present invention provides a vibration motor having a housing with an accommodation space; a vibrator; a stator; and an elastic support assembly suspending the vibrator in the accommodation space. The elastic support assembly includes one elastic support between the vibrator and the housing. The elastic support includes a first fixed part, a second fixed part, a first elastic support arm connecting the first fixed part and the second fixed part, and spaced from the vibrator, and a first flange formed by bending and extending from the first elastic support arm. The first flange keeps a distance from the vibrator or the housing. Such a vibration motor has enhanced stiffness.

## Claims

### Claim 1

A vibration motor, comprising:
a housing with an accommodation space, comprising:
two first sidewalls arranged oppositely;
two second sidewalls connected to the first sidewalls and arranged oppositely;
a bottom wall opposite to a top wall and spaced apart;
a vibrator located in the accommodation space and vibrating a long a vibration direction;
a stator accommodated in the accommodation space;
an elastic support assembly suspending the vibrator in the accommodation space, comprising at least one elastic support between the vibrator and the housing;
the elastic support including:
a first fixed part fixed on the vibrator;
a second fixed part fixed on the housing; and spaced from the first fixed part;
a first elastic support arm connecting the first fixed part and the second fixed part, and spaced from the vibrator;
a first flange formed by bending and extending from the first elastic support arm along a direction close to the vibrator or close to the housing; wherein
the first flange keeps a distance from the vibrator or the housing;
the first elastic support arm comprises a first elastic support arm body between the vibrator and the first sidewall, and a first connection part connected to the second fixed part; and the first flange locates on the first elastic support arm body or the first connection part;
the first flange is formed by bending and extending from an end of the first elastic support arm close to the top wall along a direction close to the vibrator or close to the first sidewall.

### Claim 2 (depends on 1)

The vibration motor as described in claim 1 further comprising a damping member sandwiched between the first elastic support arm and the vibrator.

### Claim 3 (depends on 1)

The vibration motor as described in claim 1, further comprising a position limiting block assembly accommodated in the accommodation space for limiting the displacement of the vibrator; the position limiting block assembly comprises a first position limiting block and a second position limiting block spaced from the first position limiting block along the vibration direction, and.

### Claim 4 (depends on 1)

The vibration motor as described in claim 1, wherein the elastic support further comprises a second flange bending and extending from the end of the first elastic support arm close to the bottom wall in a direction toward the vibrator or close to the first sidewall.

### Claim 5 (depends on 4)

The vibration motor as described in claim 4, wherein the first flange forms a distance from the second flange.

### Claim 6 (depends on 1)

The vibration motor as described in claim 1, wherein the vibrator comprises a weight fixed to the first fixed part and connected to the elastic support assembly; the weight includes an accommodation cavity surrounding the stator, and a magnet accommodated in the accommodation cavity and arranged between the stator and the weight.

### Claim 7 (depends on 6)

The vibration motor as described in claim 6, wherein the stator comprises a coil bracket and a coil wound around the coil bracket; and an axial direction of the coil is parallel to the vibration direction of the vibrator.

### Claim 8 (depends on 7)

The vibration motor as described in claim 7, wherein the vibrator further comprises a yoke locating between the magnet and the weight.

### Claim 9 (depends on 8)

The vibration motor as described in claim 8, wherein the magnet comprises a first magnet arranged on opposite sides of the coil along the axis direction and a second magnet arranged along a direction perpendicular to the axis direction; a position of the weight corresponding to the second magnet sinks away from the stator to form a groove for receiving the second magnet.