US 12,278,544 B2
Actuator for generating vibration
Hyo Jun Kim, Cheongju-si (KR); Soon Koo Shim, Cheongju-si (KR); Jong Soo Ryu, Cheongju-si (KR); Hyun Gyu Sung, Cheongju-si (KR); Jung Hoon Jang, Cheongju-si (KR); and Jun Ki Lee, Bucheon-si (KR)
Assigned to JAHWA electronics Co., Ltd., Cheongju-si (KR)
Filed by JAHWA electronics Co., Ltd., Cheongju-si (KR)
Filed on Jun. 10, 2024, as Appl. No. 18/739,267.
Application 18/739,267 is a continuation of application No. 17/783,476, filed on Jun. 8, 2022, granted, now 12,040,684.
Prior Publication US 2024/0333092 A1, Oct. 3, 2024
Int. Cl. H02K 7/06 (2006.01); H02K 3/26 (2006.01); H02K 5/167 (2006.01); H02K 5/173 (2006.01); H02K 7/08 (2006.01)
CPC H02K 7/063 (2013.01) [H02K 3/26 (2013.01); H02K 5/1732 (2013.01); H02K 7/083 (2013.01); H02K 5/1677 (2013.01); H02K 2203/03 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An actuator for generating vibration, comprising:
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.