# US 12,009,720 B2 · Voice coil motor equipped with damping springs, and camera device

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- Number: US 12,009,720 B2
- Document ID: US12009720B2
- Status: Granted
- Kind: B2
- Application number: 17/613,496
- Filed: 2020-07-23
- Published: 2022-08-04
- Granted: 2024-06-11
- Earliest claimed: 2020-01-08
- Assignees: New Shicoh Motor Co., Ltd.
- Applicants: New Shicoh Motor Co., Ltd
- Inventors: Eryong Jing
- Web page: https://patentgrep.com/patent/US12009720B2

## CPC

- H02K 41/0356: {moving along a straight path}
- H02K 5/24: specially adapted for suppression or reduction of noise or vibrations
- H02K 41/0354: {Lorentz force motors, e.g. voice coil motors}
- H04N 23/51: Housings
- H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
- H05K 1/189: characterised by the use of flexible or folded printed circuits
- H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

Disclosed are a damping spring, a voice coil motor equipped with damping springs, and a camera device. The damping spring includes a movable end connected to a rotor in a voice coil motor and a fixed end connected to a fixed part in the voice coil motor. A linear spring portion is disposed between the movable end and the fixed end, and the spring portion is provided with a plurality of damping structures bent in a serpentine shape.

## Claims

### Claim 1

A voice coil motor equipped with damping springs, the voice coil motor comprising a housing, an upper spring, magnets, coils, a holder, a flexible printed circuit (FPC), a base, and a plurality of the damping springs,
wherein each of the plurality of damping springs comprises a movable end connected to a rotor in the voice coil motor and a fixed end connected to a fixed part in the voice coil motor,
wherein a linear spring portion is disposed between the movable end and the fixed end, and the spring portion is provided with a plurality of damping structures bent in a serpentine shape,
wherein both the movable end and the fixed end are provided with at least one connecting hole,
wherein the movable ends of the damping springs are fixed to the holder, and the fixed ends of the damping springs are fixed to the base,
wherein the voice coil motor comprises four damping springs, and the four damping springs are respectively arranged at four corners of the holder,
wherein corners of the holder are respectively provided with mounting grooves for respectively mounting the damping springs, a side wall of each of the mounting grooves is provided with a first lug connected to the connecting hole of the movable end, and an inner wall of the base is provided with a fixing groove connected to the connecting hole of the fixed end.

### Claim 2 (depends on 1)

The voice coil motor equipped with damping springs according to claim 1, wherein the coils are fixed to the base, the magnets are fixed to side walls of the holder, the coils are connected to the FPC, and the FPC is fixed to an outer wall of the base.

### Claim 3 (depends on 2)

The voice coil motor equipped with damping springs according to claim 2, wherein a plurality of magnetic conductive sheets respectively corresponding to the coils are disposed on the outer wall of the base.

### Claim 4 (depends on 1)

A camera device, comprising a voice coil motor equipped with damping springs according to claim 1.

### Claim 5 (depends on 1)

The voice coil motor equipped with damping springs according to claim 1, wherein the damping structure, the movable end and the fixed end are located in a same plane.

### Claim 6 (depends on 1)

The voice coil motor equipped with damping springs according to claim 1, wherein the at least one connecting hole comprises a plurality of the connecting holes.