US 11,536,928 B2 · Voice coil motor

Abstract

A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a cylindrical bobbin for accommodating a lens and protruded at a bottom end with a boss, and a coil block arranged at a periphery of the bobbin; a stator including a magnet facing the coil block and a yoke fixing the magnet; and an elastic member including a first elastic member formed with a through hole coupled to the boss of the bobbin and a second elastic member coupled to an upper end facing the bottom end of the bobbin; wherein the boss is formed with a disengagement prevention unit inhibiting the first elastic member from being disengaged from the boss, and the first elastic member is formed with a coupling unit contacting a joint where the disengagement prevention unit and the coupling unit meet.

Claims19

Dependent claims

A voice coil motor comprising:

a base;
a bobbin disposed above the base;
a coil disposed on the bobbin;
a magnet facing the coil;
and
a first elastic member coupled to a lower surface of the bobbin,
wherein the bobbin comprises a coupling boss protruding from the lower surface of the bobbin,
wherein the coupling boss of the bobbin comprises first and second bosses,
wherein each of the first and second bosses has a circular cross section,
wherein the first elastic member comprises a first through hole coupled with the first boss and a second through hole coupled with the second boss,
wherein the first through hole has a shape different from a shape of the second through hole, and
wherein the first through hole of the first elastic member comprises a through hole having a shape corresponding to a shape of the first boss and a cut-out hole extending from the through hole and having a width shorter than a diameter of the through hole.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/911,037Filed 24 Jun 2020 · continuation

Priority

KR 10-2010-006705112 Jul 2010

Published

US 2020/0326496 A115 Oct 2020

Granted

27 Dec 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

G02B 7/04
For lenses: with mechanism for focusing or varying magnification
G02B 7/02
Mountings, adjusting means, or light-tight connections, for optical elements: for lenses
G03B 3/10
Focusing arrangements of general interest for cameras, projectors or printers: power-operated focusing
G03B 13/34
Means for focusing: power focusing

Family

Application13/180,869Parent of this continuation · filed 12 Jul 2011

Application14/333,297Parent of this continuation · filed 16 Jul 2014

US 8,810,936 B2Parent of this continuation · filed 19 Aug 2014

Application15/010,680Parent of this continuation · filed 29 Jan 2016

US 9,250,415 B2Parent of this continuation · filed 2 Feb 2016

Application15/597,913Parent of this continuation · filed 17 May 2017

US 9,658,425 B2Parent of this continuation · filed 23 May 2017

Application16/109,076Parent of this continuation · filed 22 Aug 2018

US 10,082,637 B2Parent of this continuation · filed 25 Sep 2018

US 2020/0326496 A1Pre-grant publication · published 15 Oct 2020

US 10,739,550 B2Parent of this continuation

US 2012/0008221 A1Published application

US 2014/0327978 A1Published application

US 2016/0147036 A1Published application

US 2017/0248767 A1Published application

US 2018/0364442 A1Published application

US 11,536,928 B2This patent

From the US filing history. Foreign family members aren’t listed.

Voice coil motor

Life of this patent

Voice coil motor

Life of this patent

Abstract

Claims19