Invention Grant
- Patent Title: Sound generating actuator
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Application No.: US16892405Application Date: 2020-06-04
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Publication No.: US11206490B2Publication Date: 2021-12-21
- Inventor: Cheon Myeong Kim , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee , Byung Ho Jung
- Applicant: EM-TECH Co., Ltd.
- Applicant Address: KR Gyeongsangnam-do
- Assignee: EM-TECH Co., Ltd.
- Current Assignee: EM-TECH Co., Ltd.
- Current Assignee Address: KR Gyeongsangnam-do
- Agency: Murphy, Bilak & Homiller, PLLC
- Priority: KR10-2019-0066736 20190605
- Main IPC: H04R9/02
- IPC: H04R9/02 ; H04R9/04 ; H04R7/04 ; H04R9/06

Abstract:
The present invention is intended to provide a sound generating actuator which can facilitate heat dissipation from a voice coil. According to the present invention, there is provided a sound generating actuator, including: a frame; a stationary part mounted on the frame and provided with a yoke, a magnet and a top plate to compose a magnetic circuit; a voice coil configured to receive an electrical signal and vibrate due to a magnetic field and mutual electromagnetic force of the stationary part; a spring configured to dampen vibration of the voice coil and that is made of a metallic material and secured to the frame; and a contact pad that is attached to the spring and configured to transfer vibration of the voice coil.
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