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.

公开(公告)号：US12191748B2

公开(公告)日：2025-01-07

申请号：US18568807

申请日：2022-08-05

Applicant: JAHWA ELECTRONICS CO., LTD.

Inventor： Jong Soo Ryu ,  Hyun Gyu Sung ,  Jung Hoon Jang ,  Jun Ki Lee

IPC: H02K7/06 ,  H02K3/26 ,  H02K5/173 ,  H02K7/08 ,  H02K21/24

Abstract: A vibration motor is provided. The vibration motor comprises: a rotor shaft; a first magnet and a second magnet arranged on the rotor shaft so as to face each other; a circuit board having a hollow hole through which the rotor shaft passes and coils arranged thereon, the coils respectively facing the first and second magnets; a housing forming an inner space in which the rotor shaft and the circuit board are mounted; a shaft passing through the rotor shaft and fixedly erected in the housing; a first yoke and a second yoke on which the first and second magnets are respectively installed and which are fixedly coupled to the rotor shaft so as to integrally rotate along with the rotor shaft; a weight installed on the first yoke or the second yoke; and a bearing portion comprising a plurality of bearings coaxially arranged with the shaft.

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.