WO2022007171A1

WO2022007171A1 - Sound-emitting device

Info

Publication number: WO2022007171A1
Application number: PCT/CN2020/114031
Authority: WO
Inventors: 曹成铭; 王磊; 张凡
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2020-07-06
Filing date: 2020-09-08
Publication date: 2022-01-13
Also published as: CN212812020U

Abstract

The present utility model provides a sound-emitting device, comprising a basket, a vibrating membrane supported and fixed to the basket, and a front cover coveringly arranged on the vibrating membrane and, together with the vibrating membrane, enclosing a sound-emitting front cavity; said front cover is provided with a sound outlet hole passing therethrough; said sound outlet hole communicates the front cavity of the sound with the external environment; the front cover is provided with positioning feet extending in the direction of the basket; the positioning feet are attached to the outer peripheral side of the basket and are fixedly connected to the basket. In comparison with the related art, the sound-emitting device of the present utility model has better reliability.

Description

sound device

technical field

The utility model relates to the field of sound and electricity, in particular to a sound producing device.

Background technique

With the advent of the Internet era, the number of mobile terminal devices continues to rise. Among mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal devices, and sound-emitting devices for playing music and other sounds are widely used in mobile terminal devices such as mobile phones.

The related art sound-generating device includes a basin frame, a vibrating membrane supported and fixed on the basin frame, and a front cover covering the vibrating membrane and forming a sound-emitting front cavity together with the vibrating membrane. The sound-out hole on the device connects the sound-emitting pre-cavity with the outside world.

technical problem

However, in the related art, the fixing effect of the front cover and the basin frame is not good, and the reliability is poor.

Therefore, it is necessary to provide a new sound-generating device to solve the above problems.

technical solutions

The purpose of the utility model is to provide a sound device with better reliability.

In order to achieve the above purpose, the present invention provides a sound-generating device, which comprises a basin frame, a vibrating membrane supported and fixed on the basin frame, and a vibrating membrane covered on the vibrating membrane and forming a sounding front cavity together with the vibrating membrane. A front cover, the front cover is provided with a sound outlet hole passing through it, the sound outlet hole communicates the sound-emitting front cavity with the outside world, and the front cover is provided with a positioning foot extending in the direction of the basin frame, so The positioning feet are attached to the outer peripheral side of the basin frame and are fixedly connected with the basin frame.

Preferably, the basin frame is made of a metal material, the positioning legs are made of a metal material, and the positioning legs and the basin frame are fixed by laser spot welding.

Preferably, the front cover includes a front cover plate spaced from the diaphragm and a surrounding wall bent and extended from the periphery of the front cover plate toward the basin frame, and the sound outlet penetrates through the front cover plate. A cover plate is provided, and one end of the surrounding wall away from the front cover plate is press-fitted on the vibrating film; the positioning foot is formed by extending from an end of the surrounding wall away from the front cover plate.

Preferably, the positioning foot includes a first part extending outward from the outer peripheral side of the surrounding wall and a second part extending from the first part along the outer peripheral side of the basin frame, the second part It is fixed with the basin frame by laser spot welding.

Preferably, the first part is bent and extended along the vibration direction of the diaphragm, and the second part is bent and extended along the vibration direction of the diaphragm.

Preferably, the positioning feet comprise a plurality of and are spaced apart from each other.

Preferably, the front cover has a rectangular structure with rounded corners, and the positioning feet include four and are respectively disposed at the four rounded corners of the front cover.

Preferably, the positioning feet have an arc-shaped structure matching the rounded corners.

beneficial effect

Compared with the related art, in the sound-emitting device of the present invention, the front cover is provided with positioning feet extending in the direction of the basin frame. Fixed connection; that is, through this structural arrangement, the front cover and the basin frame are positioned by the positioning feet, and then fixed, the process is simpler, the fixing effect is better, and the reliability of the sounding device is better.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

Fig. 1 is the stereo structure schematic diagram of the sound-emitting device of the present invention

Fig. 2 is the three-dimensional structure exploded schematic diagram of the sound-emitting device of the present invention;

FIG. 3 is a cross-sectional view of the sound-emitting device of the present invention.

Embodiments of the present invention

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, the present invention provides a sound-generating device 100, the sound-generating device 100 includes a basin frame 1, a vibration system 2 respectively fixed on the basin frame 1, and a vibration system 2 that drives the vibration system 2 to vibrate and emit sound. The magnetic circuit system 3 and the front cover 4, the magnetic circuit system 3 has a magnetic gap 30, and the basin frame 1 is a metal basin frame.

Specifically, the vibration system 2 includes a diaphragm 21 supported and fixed on the basin frame 1 and used for vibrating and producing sound, a dome 22 , and a voice coil inserted in the magnetic gap 30 to drive the diaphragm 21 to vibrate 23. The elastic conductive member 24 and the skeleton 25.

The vibrating membrane 21 includes a vibrating portion 211 , a ring portion 212 extending from the periphery of the vibrating portion 211 and surrounding the vibrating portion 211 , and being bent by the side of the ring portion 212 away from the vibrating portion 211 . It is extended and fixed to the fixing part 213 of the basin frame 1 . The dome 22 is attached to the side of the vibration part 211 close to the magnetic circuit system 3 .

The front cover 4 is covered on the diaphragm 21 and together with the diaphragm 21 to form a sounding front cavity 10 , the front cover 4 includes a front cover 42 spaced from the diaphragm 21 , and the front cover 42 is formed by the front cover 42 . The surrounding wall 43 of which the peripheral edge of 42 is bent and extended toward the direction of the basin frame 1 . There is a sound-out hole 420 running through it. Of course, the sound-out hole 420 can also be set through the surrounding wall 43 according to actual needs, as long as the sound-out hole 420 connects the sounding front cavity 10 with the outside world, so that the diaphragm 21 vibrates and emits sound can be transmitted to the outside world.

The front cover 4 is provided with a positioning leg 41 extending toward the basin frame 1 . The positioning leg 41 is attached to the outer peripheral side of the basin frame 1 and is fixedly connected with the basin frame 1 . That is, with this structure, the front cover 4 and the basin frame 1 are positioned by the positioning feet 41 and then fixed, the process flow is simpler, the fixing effect is better, and the reliability of the sounding device 100 is better.

Specifically, the basin frame 1 is made of a metal material, the positioning legs 41 are made of a metal material, and the positioning legs 41 and the basin frame 1 are fixed by laser spot welding.

The positioning foot 41 is formed by extending from one end of the surrounding wall 43 away from the front cover 42 , and includes a first portion 411 extending outward from the outer peripheral side of the surrounding wall 43 and a first portion 411 extending along the edge of the surrounding wall 411 . The second portion 412 extending from the outer peripheral side of the basin frame 1 is fixed to the basin frame 1 by laser spot welding. That is to say, the first part 411 and the second part 412 together form a positioning step, which can make the basin frame 1 and the front cover 4 quickly position during the process, and improve the efficiency. At the same time, the second part 412 and the basin frame 1 are fixed by laser spot welding. The fixing effect is better, of course, the positioning pin 41 is not limited to this structure.

Preferably, the first part 411 is bent and extended along the vibration direction perpendicular to the diaphragm 21 , and the second part 412 is bent and extended along the vibration direction of the diaphragm 21 , that is, the positioning pin 41 adopts this structure , the structure is simple, and the technological process is simple.

In this embodiment, the positioning feet 41 include a plurality of and are spaced apart from each other. Specifically, the front cover 4 has a rectangular structure with rounded corners. The positioning feet 41 include four and are respectively disposed at the four rounded corners of the front cover 4 . The rounded corners match the arc structure. The positioning feet 41 are evenly distributed around the junction of the front cover 4 and the basin frame 1, and are matched with the rounded corners, which is more firm, saves materials, and reduces costs; of course, the positioning feet are not limited to four, but also one, At this time, the positioning feet 41 are annular, and are arranged around the outside of the basin frame 1 .

The voice coil 23 is inserted in the magnetic gap 30 and has a racetrack shape.

There are two elastic conductive members 24 , which are respectively disposed on opposite sides of the voice coil 23 and are electrically connected to the voice coil 23 . It includes an elastic arm 241 , a first connecting arm 242 and a second connecting arm 243 extending from opposite sides of the elastic arm 241 . side.

The skeleton 25 is sandwiched between the dome 22 and the voice coil 23 , and the skeleton 25 includes a skeleton main body 251 attached to the dome 22 . The first extension wall 252 is bent and extended in the direction of the coil 23 . The end of the first extension wall 252 away from the main body portion 251 of the frame is abutted and fixed to the voice coil 23 , that is, the voice coil 23 is fixed to the voice coil 23 through the frame 25 . For the dome 22, the voice coil 23 is suspended in the magnetic gap 30 through the skeleton 25, and the reliability is better.

Specifically, the main body portion 251 of the skeleton is in the shape of a racetrack, the first extension wall 252 is annular, and the skeleton 25 further includes two extension walls formed by bending and extending from opposite sides of the first extension wall 252 respectively. The second extension wall 253 , and the first connecting arm 242 is fixed to the second extension wall 253 .

The magnetic circuit system 3 includes a magnetic bowl 31 , and a magnetic steel assembly 32 fixedly disposed on the magnetic yoke 31 . The magnetic steel assembly 32 and the magnetic bowl 31 are spaced apart to form a magnetic gap 30 .

The present utility model provides an embodiment of the present utility model as described above, which is not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the contents of the specification and accompanying drawings of the present utility model, or Directly or indirectly used in other related technical fields, are all similarly included in the scope of patent protection of the present invention.

Claims

A sounding device includes a basin frame, a vibrating membrane supported and fixed on the basin frame, and a front cover that covers the vibrating membrane and forms a sounding front cavity together with the vibrating membrane, the front cover is provided with Through the sound outlet hole on it, the sound outlet hole communicates the sounding front cavity with the outside world, and it is characterized in that the front cover is provided with a positioning foot extending in the direction of the basin frame, and the positioning foot is attached to the on the outer peripheral side of the basin frame and fixedly connected with the basin frame.
The sound-emitting device according to claim 1, wherein the basin frame is made of a metal material, the positioning legs are made of a metal material, and the positioning legs and the basin frame are fixed by laser spot welding.
The sound-generating device according to claim 2, wherein the front cover comprises a front cover plate spaced from the diaphragm and a front cover plate that is bent and extended from the periphery of the front cover plate toward the basin frame. an enclosure wall, the sound outlet is arranged through the front cover plate, and the end of the enclosure wall away from the front cover plate is pressed on the vibrating membrane; the positioning feet are separated from the front cover by the enclosure wall One end of the plate is formed to extend.
The sound-generating device according to claim 3, wherein the positioning foot comprises a first portion extending outward from the outer peripheral side of the surrounding wall, and the first portion is attached to the outer periphery of the basin frame along the The second part extending laterally, the second part and the basin frame are fixed by laser spot welding.
The sound-generating device according to claim 4, wherein the first part is bent and extended along the vibration direction of the diaphragm, and the second part is bent and extended along the vibration direction of the diaphragm.
The sound-generating device according to claim 1, wherein the positioning feet comprise a plurality of and are spaced apart from each other.
The sound-emitting device according to claim 6, wherein the front cover has a rectangular structure with rounded corners, and the positioning feet include four and are respectively disposed at the four rounded corners of the front cover .
The sound-generating device according to claim 7, characterized in that, the positioning feet have an arc-shaped structure matched with the rounded corners.