Patent ID: 11968513
Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A vibration sounding device, comprising:
a housing body with a containment cavity;
a vibration system, including a sound membrane and a voice coil for driving the sound membrane to vibrate;
a magnetic circuit system for driving the vibration system to generate sound in a first direction, including a main magnet and a secondary magnet arranged around the main magnet for forming a magnetic gap,
a sounding unit formed by the vibration system and the magnetic circuit system;
a weight;
a drive coil fixed on and movable with the weight along a second direction which is perpendicular to the first direction, including a first side edge spaced from the main magnet, and a second side edge opposite to the first side edge and spaced from the secondary magnet;
a spring plate for connecting with and suspending the weight in the containment cavity, including a first fixed section connecting with the weight and a second fixed section connecting with the housing body; wherein
the first fixed section includes a first main body connecting with the weight, two first connection arms and two first arc bending parts symmetrically arranged on opposite sides of the first main body; opposite ends of the first connection arms are respectively connected to the first main body and the first arc bending part;
the second fixed section includes a second main body connecting with the housing body, a second connection arm and a second arc bending part;
opposite ends of the second connection arm are respectively connected to the second main body and the second arc bending part; and
the first arc bending part and the second arc bending part are fixed by laser spot welding.