US 12,335,708 B2
Sound device
Li Ren, Changzhou (CN); and Shengjie Hua, Changzhou (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Jiangsu (CN)
Filed on Jun. 19, 2023, as Appl. No. 18/337,410.
Application 18/337,410 is a continuation of application No. PCT/CN2023/072677, filed on Jan. 17, 2023.
Claims priority of application No. 202223467396.X (CN), filed on Dec. 22, 2022.
Prior Publication US 2024/0214740 A1, Jun. 27, 2024
Int. Cl. H04R 9/02 (2006.01); H04R 7/04 (2006.01); H04R 7/18 (2006.01); H04R 9/06 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 7/04 (2013.01); H04R 7/18 (2013.01); H04R 9/06 (2013.01); H04R 2400/11 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A sound device, comprising:
a frame;
a first vibration system; and
a magnetic circuit system;
wherein the first vibration system and the magnetic circuit system are fixed to the frame; the magnetic circuit system defines a first magnetic gap; the first vibration system comprises a first vibrating diaphragm and a first voice coil; the first vibrating diaphragm is fixed to the frame; the first voice coil is inserted into the first magnetic gap to drive the first vibrating diaphragm to vibrate and produce sound; the magnetic circuit system comprises a magnetic yoke, a main magnetic steel set, and two auxiliary magnetic steel sets; the magnetic yoke is fixed to the frame; the main magnetic steel set is fixed to the magnetic yoke; the two auxiliary magnetic steel sets are respectively disposed on a first side and a second side of the main magnetic steel set; the two auxiliary magnetic steel sets and the main magnetic steel set are spaced apart to form the first magnetic gap;
the magnetic yoke comprises a magnetic yoke body and two magnetic yoke extending portions; the two magnetic yoke extending portions respectively extend from two opposite sides of the magnetic yoke body; the main magnetic steel set is fixed to one side, close to the first vibrating diaphragm, of the magnetic yoke body; and the two magnetic yoke extending portions are respectively disposed on a third side and a fourth side of the main magnetic steel set;
one side, away from the magnetic yoke body, of each of the magnetic yoke extending portions is recessed towards a direction of the magnetic yoke body to form positioning holes; the frame is annular, positioning blocks are disposed on the frame; the positioning blocks protrude from an inner side of the frame; the positioning blocks are one-to-one matched with the positioning holes; and
the positioning blocks are one-to-one inserted into the positioning holes for positioning, so that the magnetic circuit system and the frame are assembled and positioned along a first direction of the magnetic yoke; the one side, away from the magnetic yoke body, of each of the magnetic yoke extending portions, at least partially abuts against the inner side of the frame, so that the magnetic circuit system and the frame are assembled and positioned along a second direction of the magnetic yoke; the first direction and the second direction are perpendicular to each other and are parallel to the magnetic yoke body.