公开(公告)号：US10381910B2

公开(公告)日：2019-08-13

申请号：US15580999

申请日：2015-11-25

Applicant: JAHWA electronics Co., Ltd.

Inventor： Soon Koo Shim ,  Young Bin Chong ,  Chun Choi ,  Won Gook Lee ,  Min Goo Lee

IPC: H02K33/00 ,  H02K35/00 ,  H02K33/02

Abstract: A linear vibration generating device, which includes a stator fixed on a bracket and having a center yoke concentrically fixed in an inner space of coil winding units and at least one blade extending from the center yoke in a direction perpendicular to the concentric axis, and a vibrator having a magnet surrounding outer circumferences of the coil winding units, and an elastic body disposed between the stator and the vibrator. The blade has at least one passage through which a coil wire for electrically connecting the coil winding units passes.

公开(公告)号：US10389219B2

公开(公告)日：2019-08-20

申请号：US15334691

申请日：2016-10-26

Applicant: JAHWA electronics Co., Ltd.

Inventor： Nam Jin Choi ,  Kyung Hoon Jo ,  Soon Koo Shim ,  Young Bin Chong ,  Won Gook Lee ,  Min Goo Lee

IPC: H02K33/02 ,  H02K1/02 ,  H02K1/12 ,  H02K1/34

Abstract: A vibration actuator includes a bracket coupled to a case to form an inner space; a stator having a circuit board coupled to an upper surface of the bracket, a coil connected to the circuit board, and a yoke provided in the coil; a vibrator having a permanent magnet disposed at an outer side of the coil and a weight coupled to an outer circumference of the permanent magnet; an elastic member configured to connect the stator and the vibrator and elastically support the vibrator; and a non-magnetic damper provided between the weight and the elastic member.

公开(公告)号：US09742254B1

公开(公告)日：2017-08-22

申请号：US15347922

申请日：2016-11-10

Applicant: JAHWA electronics Co., Ltd.

Inventor： Nam Jin Choi ,  Kyung Hoon Jo ,  Soon Koo Shim ,  Young Bin Chong ,  Won Gook Lee ,  Min Goo Lee

IPC: H02K33/00

CPC classification number: H02K33/00 ,  G06F3/016 ,  H02K33/16

Abstract: Disclosed is an apparatus for generating linear vibration with a damper, which includes a housing having an inner space formed therein, a fixed body provided in the inner space and having a coil, a vibrating body having a magnet and a weight coaxially disposed with the coil and configured to move in a vertical direction on the basis of the fixed body, an elastic body configured to elastically support the vibrating body, a viscous fluid provided at an upper surface of the magnet and having viscosity, and a damper installed in the housing to face an upper surface of the vibrating body and configured to make a surface contact with the viscous fluid when the vibrating body moves upwards, the damper having a shape not making a surface contact with the entire viscous fluid simultaneously.

公开(公告)号：US11070121B2

公开(公告)日：2021-07-20

申请号：US16304185

申请日：2017-08-04

Applicant: JAHWA ELECTRONICS CO., LTD.

Inventor： Nam Jin Choi ,  Kyung Hoon Jo ,  Soon Koo Shim ,  Young Bin Chong ,  Chun Choi ,  Won Gook Lee ,  Min Goo Lee

IPC: H02K33/16 ,  H02K33/18 ,  H02K11/33 ,  G06F3/01

Abstract: A vibration generating apparatus includes a bracket coupled to a rectangular case to form an inner space, a stator including a circuit board coupled to an upper surface of the bracket and a coil connected to the circuit board, a vibrator including a permanent magnet arranged on an exterior of the coil and a weighted body coupled to an outer circumferential surface of the permanent magnet, and an elastic member connecting the stator and the vibrator and elastically supporting the vibrator. The weighted body is polyhedral, and the vibrator moves up-and-down.

公开(公告)号：US09913364B2

公开(公告)日：2018-03-06

申请号：US15461618

申请日：2017-03-17

Applicant: JAHWA electronics Co., Ltd.

Inventor： Chun Choi ,  Soon Koo Shim ,  Young Bin Chong ,  Nam Jin Choi ,  Won Gook Lee ,  Min Goo Lee ,  Kyung Hoon Jo

IPC: H01L23/48 ,  H05K1/02 ,  H05K1/11 ,  H05K1/09

CPC classification number: H05K1/0216 ,  B06B1/0207 ,  B06B1/045 ,  H02K11/02 ,  H02K33/16 ,  H02K2211/03 ,  H05K1/09 ,  H05K1/112 ,  H05K1/165 ,  H05K2201/09263 ,  H05K2201/09481 ,  H05K2201/09672

Abstract: A printed circuit board includes a pad to receive an electric signal from a controller, a plurality of signal lines connected to the pad to transmit the electric signal received at the pad, and a signal transmission unit connected to the signal lines to transmit the electric signal to a coil. The plurality of signal lines are configured to face each other in at least a partial region and/or disposed in a zigzag form in at least a partial region. If the printed circuit board and a vibration actuator including the printed circuit board are used, it is possible to change a high frequency interference region according to a pattern by changing a pattern of the printed circuit board, and to improve receiving efficiency of an antenna by reducing high frequency noise.