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公开(公告)号：US20200321845A1
公开(公告)日：2020-10-08
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
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.
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公开(公告)号：US20190103796A1
公开(公告)日：2019-04-04
申请号：US15903679
申请日：2018-02-23
Applicant: JAHWA electronics Co., Ltd.
Inventor： Soon Koo SHIM , Young Bin CHONG , Nam Jin CHOI
Abstract: A linear vibration generating device. The linear vibration generating device includes a vibrator including an annular magnet and a weight surrounding the magnet; a stator including a coil disposed at a center of the magnet and a yoke surrounding the coil;an elastic member disposed between the vibrator and the stator to elastically support the vibrator; and an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height. The anti-tilting unit is a non-magnetic body with a cylindrical shape having an outer diameter equal to or greater than a diameter of an outermost portion of the yoke and smaller than an inner diameter of the magnet.
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公开(公告)号：US20180042102A1
公开(公告)日：2018-02-08
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
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.
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