US 12,294,838 B2
Surface treatment technology of magnetic circuit of loudspeaker
Shanjun Ding, Shaoxing (CN)
Assigned to Shengzhou Greatt Electronics Co., Ltd., Shaoxing (CN)
Filed by Shengzhou Greatt Electronics Co., Ltd., Shaoxing (CN)
Filed on Mar. 22, 2023, as Appl. No. 18/125,014.
Claims priority of application No. 202211644160.0 (CN), filed on Dec. 20, 2022.
Prior Publication US 2024/0205624 A1, Jun. 20, 2024
Int. Cl. H04R 29/00 (2006.01); H04R 9/02 (2006.01); H04R 9/06 (2006.01); H04R 31/00 (2006.01)
CPC H04R 29/003 (2013.01) [H04R 9/025 (2013.01); H04R 9/06 (2013.01); H04R 31/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A surface treatment method of magnetic circuit of loudspeaker, comprising:
step one: assembling components of the magnetic circuit;
step two: painting treatment;
step three: assembling the loudspeaker; and
step four: testing and packaging;
wherein in the step one, a T yoke and a magnet of the components of the loudspeaker are adhered and assembled by an adhesive, and a composition of the T yoke and the magnet is obtained after the adhesive is solidified; and the step two is performed next;
wherein in the step two, a coating material is selected according to needs of a customer, after viscosity adjustment and color adjustment are performed on the coating material, a spray gun is used to spray paint the coating material on the composition of the T yoke and the magnet, and then the coating material on the composition of the T yoke and the magnet is baked and solidified to form a paint film on a surface of the composition of the T yoke and the magnet, thereby to obtain a magnetic circuit assembly;
wherein in the step three, the magnetic circuit assembly obtained in the step two is transferred to an assembly workshop, and the magnetic circuit assembly is assembled with other components of the loudspeaker to obtain a finished loudspeaker; and
wherein in the step four, performance tests are performed on the finished loudspeaker obtained in the step three, and a qualified loudspeaker is packaged and stored.