公开(公告)号：US12040684B2

公开(公告)日：2024-07-16

申请号：US17783476

申请日：2021-02-01

Applicant: JAHWA electronics Co., Ltd.

Inventor： Hyo Jun Kim ,  Soon Koo Shim ,  Jong Soo Ryu ,  Hyun Gyu Sung ,  Jung Hoon Jang ,  Jun Ki Lee

IPC: H02K7/06 ,  H02K3/26 ,  H02K5/167 ,  H02K5/173 ,  H02K7/08

CPC classification number: H02K7/063 ,  H02K3/26 ,  H02K5/1732 ,  H02K7/083 ,  H02K5/1677 ,  H02K2203/03

Abstract: An actuator for generating vibration, including a shaft; a middle supporter having a fitting portion fitted into an upper portion of the shaft and a support portion below the fitting portion to form a first space where a lower portion of the shaft is exposed; a circuit board having a driving coil and a hollow formed through the middle supporter; a housing having an inner space that accommodates the middle supporter and the circuit board so the circuit board is fixed thereto; a first yoke plate having a first magnet installed to face an upper surface of the driving coil and coupled to an upper portion of the middle supporter; a second yoke plate having a second magnet installed to face a lower surface of the driving coil and coupled to a lower portion of the middle supporter; and a weight installed to at least one of the yoke plates.

公开(公告)号：US12278544B2

公开(公告)日：2025-04-15

申请号：US18739267

申请日：2024-06-10

Applicant: JAHWA electronics Co., Ltd.

Inventor： Hyo Jun Kim ,  Soon Koo Shim ,  Jong Soo Ryu ,  Hyun Gyu Sung ,  Jung Hoon Jang ,  Jun Ki Lee

IPC: H02K7/06 ,  H02K3/26 ,  H02K5/167 ,  H02K5/173 ,  H02K7/08

Abstract: An actuator for generating vibration, including a middle supporter to form a first space; a shaft provided in the middle supporter and exposed in the first space; a circuit board having a driving coil and a hollow formed through the middle supporter; a housing having an inner space formed to accommodate the middle supporter and the circuit board so that the circuit board is fixed thereto; a first yoke plate having a first magnet installed to face an upper surface of the driving coil and fixedly coupled to an upper portion of the middle supporter; a second yoke plate having a second magnet installed to face a lower surface of the driving coil and fixedly coupled to a lower portion of the middle supporter; and a weight installed to at least one of the first and second yoke plates.