Speaker device

Patent metadata

Field	Value
Publication number	US-11647335-B2
Application number	US-202117535716-A
Country	US
Kind code	B2
Filing date	Nov 26, 2021
Priority date	Nov 30, 2020
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

The present disclosure provides speaker device. The speaker device includes frame, vibration unit fixed to frame and magnetic circuit unit driving vibration unit to vibrate and produce sound, where magnetic circuit unit is provided with magnetic gap; vibration unit includes diaphragm, voice coil inserted in magnetic gap to drive diaphragm to vibrate and holder connected to diaphragm; side of frame close to diaphragm is at least partially embedded into diaphragm; first surface is formed on side of frame away from diaphragm; second surface is formed on side of diaphragm close to magnetic circuit unit. The present disclosure solves problem of glue overflow of holder by means of reserved space between frame and diaphragm. In addition, by using first surface of holder as supporting surface, present disclosure improves dimensional consistency of gluing with flexible printed circuit (FPC), etc., thereby improving product yield.

First claim

What is claimed is:

1. A speaker device, comprising a frame, a vibration unit fixed to the frame and a magnetic circuit unit driving the vibration unit to vibrate and produce sound, wherein
the magnetic circuit unit is provided with a magnetic gap; the vibration unit comprises a diaphragm, a voice coil inserted in the magnetic gap to drive the diaphragm to vibrate, and a holder connected to the diaphragm; wherein
a side of the frame close to the diaphragm is at least partially embedded into the diaphragm; a first surface is formed on a side of the frame away from the diaphragm; a second surface is formed on a side of the diaphragm close to the magnetic circuit unit; a reference surface is formed on a side of the magnetic circuit unit away from the diaphragm; and a distance between the first surface and the reference surface along a vibrating direction of the diaphragm is smaller than a distance between the second surface and the reference surface along the vibrating direction of the diaphragm, wherein the diaphragm comprises a vibrating portion provided with a through hole, a suspension portion extending from a periphery of the vibrating portion and surrounding the vibrating portion, and a fixing portion bending and extending from a side of the suspension portion away from the vibrating portion along the vibrating direction of the diaphragm and fixed to the frame; and the second surface is formed on a side of the fixing portion away from the vibrating portion; the fixing portion comprises a first fixing portion bending and extending from the suspension portion and fixed to a top of the frame, a second fixing portion bending and extending from an outer periphery of the first fixing portion along the vibrating direction of the diaphragm and fixed to an outer side surface of the frame, and a third fixing portion that is directly opposite to and spaced apart from the second fixing portion; and the frame is interposed between the second fixing portion and the third fixing portion, the fixing portion further comprises a gluing member that is provided on the side of the third fixing portion away from the first fixing portion; and the second surface is formed on a side of the gluing member away from the first fixing portion.

2. The speaker device as described in claim 1 , wherein the second surface is formed on a side of the third fixing portion away from the first fixing portion; a third surface is formed on a side of the second fixing portion away from the first fixing portion; and the distance between the second surface and the reference surface along the vibrating direction of the diaphragm is smaller than a distance between the third surface and the reference surface along the vibrating direction of the diaphragm.

3. The speaker device as described in claim 1 , wherein the vibration unit further comprises an elastic support assembly fixed to the frame; and the elastic support assembly comprises an elastic piece fixed to the frame and an auxiliary diaphragm fitted to the elastic piece.

4. The speaker device as described in claim 3 , wherein the auxiliary diaphragm is fitted to a side of the elastic piece away from the diaphragm.

5. The speaker device as described in claim 1 , wherein the frame is made of a metal material.

Assignees

• Aac Microtech Changzhou Co Ltd

Inventors

• Liang Ping
• Zhao Bin

Classifications

• H04R9/025 Primary

  Magnetic circuit · CPC title

• H04R9/045 Primary

  Mounting (H04R9/043 takes precedence) · CPC title

• H04R7/00

  Diaphragms for electromechanical transducers (in general F16J3/00); Cones (for musical instruments G10 ){(cones, diaphragms or the like, for emitting or receiving sound in general G10K13/00; Mounting thereof)} · CPC title

• H04R9/06

  Loudspeakers · CPC title

• H04R7/20 Primary

  Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands · CPC title