US 12,294,846 B2
Exciter and electronic product
Dongsheng Mao, Shandong (CN); Yongqiang Wang, Shandong (CN); and Liang Xiao, Shandong (CN)
Assigned to GOERTEK INC., Weifang (CN)
Appl. No. 17/790,204
Filed by GOERTEK INC., Shandong (CN)
PCT Filed Dec. 5, 2020, PCT No. PCT/CN2020/134118
§ 371(c)(1), (2) Date Jun. 30, 2022,
PCT Pub. No. WO2021/135831, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 201911397782.6 (CN), filed on Dec. 30, 2019.
Prior Publication US 2023/0030236 A1, Feb. 2, 2023
Int. Cl. H04R 9/02 (2006.01); H01F 7/20 (2006.01); H04R 9/04 (2006.01)
CPC H04R 9/025 (2013.01) [H01F 7/20 (2013.01); H04R 9/04 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An exciter, comprising:
a magnetic circuit assembly comprising a first housing and a magnet, and the magnet is coupled to the first housing; and
a coil assembly comprising a second housing and a coil, and the coil is disposed in a magnetic field formed by the magnet,
wherein the coil is coupled to the second housing,
wherein the coil assembly is configured to generate a vibration relative to the magnetic circuit assembly,
wherein the coil is formed by winding a wire having a polygonal cross section,
wherein the magnet is provided in pairs, and magnetization directions of two magnets in each pair of magnets are the same as each other,
wherein two pairs of magnets are arranged along a vibration direction of the coil assembly, and magnetization directions of the two pairs of magnets are opposite to each other to form a magnetic circuit,
wherein an elastic sheet is provided on the second housing, and wherein the magnet is coupled to the elastic sheet, and
wherein the elastic sheet is a sheet-like structure that protrudes outward from the second housing and forms a certain angle with an upper surface of the second housing.