US 12,334,791 B2
Horizontal linear-vibration generating apparatus
Soon Koo Shim, Cheongju-si (KR); Kyung Yang Jung, Jeungpyeong-gun (KR); Won Gook Lee, Jecheon-si (KR); Han Ho Yoo, Cheongju-si (KR); and Seung Ki Kim, Jeungpyeong-gun (KR)
Assigned to JAHWA ELECTRONICS CO., LTD., Cheongju-si (KR)
Appl. No. 17/790,436
Filed by JAHWA ELECTRONICS CO., LTD., Cheongju-si (KR)
PCT Filed Dec. 30, 2020, PCT No. PCT/KR2020/019400
§ 371(c)(1), (2) Date Nov. 21, 2022,
PCT Pub. No. WO2021/137619, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 10-2020-0000907 (KR), filed on Jan. 3, 2020.
Prior Publication US 2023/0112671 A1, Apr. 13, 2023
Int. Cl. H02K 33/06 (2006.01)
CPC H02K 33/06 (2013.01) 6 Claims
OG exemplary drawing
 
1. A horizontal linear-vibration generating apparatus, the apparatus comprising:
a case coupled to a bracket to provide mounting space therein;
a stator mounted in the mounting space and including a coil-yoke unit electrically connected to a circuit substrate on the bracket;
a vibrator having magnets corresponding to the coil-yoke unit and weighted bodies configured to amplify vibration and vibrating in a first direction with respect to the stator in the mounting space; and
first and second springs correspondingly provided between the case and the vibrator and elastically supporting a shaking motion of the vibrator in the first direction with respect to the stator in the mounting space, at opposite sides of the vibrator,
wherein the first and second springs are integrally provided with first and second spring feet, respectively, for mounting the vibrator,
the first and second spring feet each have at least one movable stopper,
the case and the bracket each have at least one fixed stopper provided in correspondence to the movable stopper, and
the movable stopper and the fixed stopper corresponding to each other have at least portions overlapped when viewed in the first direction, and
wherein the first and second weighted bodies installed to face each other in the first direction with the coil-yoke unit interposed therebetween; and the first and second magnets installed to face each other in a second direction orthogonal to the first direction with the coil-yoke unit interposed therebetween, and
wherein the first spring foot is mounted with a first weighted body and a first magnet, thereon, and the second spring foot is mounted with a second weighted body and a second magnet, thereon and
in order for the first magnet and the second magnet not to be breakaway in the first direction during the vibration, the first spring foot and the second spring foot are each provided with the pair of separation prevention pieces,
wherein the pair of separation prevention pieces is provided by cutting some parts of a magnet mounting plate of each of the first spring foot and the second spring foot and bending the cut-out portions in a direction in which the magnet is mounted.