CN213462266U

CN213462266U - Sound production device

Info

Publication number: CN213462266U
Application number: CN202022222443.9U
Authority: CN
Inventors: 宋威; 肖波; 令狐荣林; 孔晨亮; 章统
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-15
Anticipated expiration: 2030-09-30
Also published as: WO2022067991A1

Abstract

The utility model provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate and sound, and the basin frame is provided with a plurality of mutually spaced gaps which are formed by the sinking of one side of the basin frame close to the magnetic circuit system to the direction far away from the magnetic circuit system; the vibrating diaphragm is including being annular vibrating part, the interior book ring that extends by the bending of vibrating part internal periphery, the outer book ring that extends by the bending of vibrating part external periphery, the first fixed part that the one side of keeping away from the vibrating part by outer book ring was bent along the outside of basin frame and is extended and one side of keeping away from the outer book ring by first fixed part corresponds a plurality of archs that a plurality of breach protrusions formed, the one side that the vibrating part was kept away from to interior book ring is fixed in magnetic circuit, the outside that is fixed in the basin frame is established to first fixed part subsides, each arch correspondence is acceptd in each breach. Compared with the prior art, the utility model discloses a sounding device reliability is better.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to an apply to vocal device of electron audio amplifier product.

[ background of the invention ]

The sound generating device is also called a loudspeaker or a loudspeaker, and is applied to a sound box to convert an audio signal into sound for playing.

The sound production device in the related art comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and produce sound, the vibration system comprises a vibrating diaphragm, a voice coil and an elastic part, the voice coil drives the vibrating diaphragm to vibrate and produce sound, the elastic part is fixed on one side, far away from the vibrating diaphragm, of the basin frame,

the basin frame is provided with a plurality of gaps which are formed by sinking from one side of the basin frame close to the magnetic circuit system to the direction far away from the magnetic circuit system;

the vibrating diaphragm comprises an annular vibrating part, an inward-folded ring and an outward-folded ring, wherein the inward-folded ring is bent and extended from the inner periphery of the vibrating part, and the outward-folded ring is bent and extended from the outer periphery of the vibrating part; one side of the outward folding ring, which is far away from the vibration part, is fixed on the basin frame, and one side of the inward folding ring, which is far away from the vibration part, is fixed on the magnetic circuit system.

However, in the sounding device of the related art, since the basin frame is provided with a plurality of gaps spaced from each other to facilitate the positioning of the elastic member, the magnetic circuit system, and other components, the structure is convenient for the positioning of other components, but the existence of the gaps causes the problem of air leakage of the sounding device.

Therefore, there is a need to provide a new sound generation device to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a better vocal device of reliability.

In order to achieve the above object, the utility model provides a sound production device, which comprises a basin frame, a vibration system respectively fixed on the basin frame and a magnetic circuit system for driving the vibration system to produce sound by vibration, wherein the vibration system comprises a vibration diaphragm and a voice coil for driving the vibration diaphragm to produce sound by vibration,

the vibrating diaphragm including be annular vibrating portion, by the interior book ring that the internal periphery of vibrating portion buckles to extend, by the outer book ring that the outer periphery of vibrating portion buckles to extend, by the outer book ring is kept away from one side edge of vibrating portion the first fixed part that the outside of basin frame was buckled to extend and is kept away from first fixed part one side of outer book ring corresponds a plurality ofly a plurality of archs that the breach protrusion formed, interior book ring is kept away from one side of vibrating portion is fixed in magnetic circuit, first fixed part subsides are established and are fixed in the outside of basin frame, each protruding correspondence is acceptd in each the breach.

Preferably, the basin stand is of a runway-type structure with round corners, and comprises two short shafts which are spaced from each other and are correspondingly arranged, two long shafts which are spaced from each other and are correspondingly arranged, and four round corners which are respectively connected with the long shafts and the short shafts, wherein the notches are arranged at the joints of the long shafts and the round corners and/or at the joints of the short shafts and the round corners.

Preferably, the orthographic projection of the first fixing part along the vibration direction of the diaphragm is rectangular, and the bulges are arranged at the right angles of the rectangle; the diaphragm also comprises second fixing parts which are bent and extended along the inner sides of the round corners from one side of the outward-folding ring, which is far away from the vibration part, the ends, which are far away from the first fixing parts, of the bulges at the same right angle are connected to the same second fixing parts, and each second fixing part is respectively attached and fixed to the inner side of each round corner; the second fixing part and the first fixing part form gaps at intervals, and each fillet is correspondingly accommodated in each gap.

Preferably, in the vibration direction of the diaphragm, a distance between one end of the short axis far away from the diaphragm and a distance between one end of the round angle far away from the diaphragm and the diaphragm are both smaller than a distance between one end of the long axis far away from the diaphragm and the diaphragm.

Preferably, the short axis and the long axis are arranged at least partially at intervals along a vibration direction perpendicular to the vibrating diaphragm, and positioning grooves are formed at positions corresponding to the round corners, and the vibration system further comprises an auxiliary vibrating diaphragm assembly which is fixed to the positioning grooves in a clamping manner and arranged at intervals with the vibrating diaphragm.

Preferably, the magnetic circuit system comprises a magnetic yoke fixed on the basin frame, a main magnetic steel unit fixed on the magnetic yoke, an auxiliary magnetic steel unit arranged on the periphery of the main magnetic steel unit at intervals and surrounding a magnetic gap together with the main magnetic steel unit, and a magnetic bowl covered on the main magnetic steel unit, the voice coil is suspended in the magnetic gap, the periphery of the magnetic bowl is abutted and fixed on the auxiliary magnetic steel unit, and one side of the inward-folding ring away from the vibration part is fixed on the magnetic bowl.

Preferably, the magnetic bowl includes a gap extending therethrough, and the voice coil further includes a voice coil lead electrically connected to an external electrical signal through the gap.

Preferably, vibration system still including be used for with the voice coil loudspeaker voice coil with the skeleton that the vibrating diaphragm is connected, the skeleton including laminate in the vibrating diaphragm is close to the skeleton body of voice coil loudspeaker voice coil one side, by the skeleton body is kept away from the one end warp of vibrating diaphragm the clearance is to being close to the magnetic gap direction is buckled and is extended and connect in the skeleton linking arm of voice coil loudspeaker voice coil.

Preferably, the tub stand is made of a metal material.

Compared with the prior art, in the sounding device of the utility model, the basin frame is provided with a plurality of gaps which are formed by the side of the basin frame close to the magnetic circuit system and sunken towards the direction far away from the magnetic circuit system and are spaced with each other, so as to facilitate the positioning of the magnetic circuit system and other parts; furthermore, in order to solve the problem of air leakage existing in the notch, the utility model is further provided with a vibrating diaphragm, wherein the vibrating diaphragm comprises an annular vibrating part, an inward-folding ring which is bent and extended from the inner periphery of the vibrating part, an outward-folding ring which is bent and extended from the outer periphery of the vibrating part, a first fixing part which is bent and extended from the outer side of the basin frame and is extended from one side of the outward-folding ring, and a plurality of bulges which are formed by the bulges of the notch corresponding to one side of the first fixing part which is away from the outward-folding ring, one side of the inward-folding ring which is away from the vibrating part is fixed on the magnetic circuit system, the first fixing part is adhered and fixed on the outer side of the basin frame, each bulge is correspondingly accommodated in each notch, and under the premise of satisfying the positioning, the problem of sealing performance is considered, so that the sealing performance of the sounder is better, the reliability is improved, and, the space utilization rate is high.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of the sound device of the present invention;

fig. 2 is an exploded view of a part of the three-dimensional structure of the sound device of the present invention;

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

fig. 4 is a schematic view of an assembly structure of the frame and the diaphragm of the sound generating device of the present invention;

fig. 5 is a schematic view of a three-dimensional structure of the vibrating diaphragm of the sound generating device of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a sound generating device 100, which comprises a frame 1, a vibration system 2 supported and fixed on the frame 1, and a magnetic circuit system 3 driving the vibration system 2 to vibrate and generate sound and having a magnetic gap 30.

The frame 1 is made of metal material and is provided with a plurality of gaps 10 which are formed by the side of the frame close to the magnetic circuit system 3 and are recessed towards the direction far away from the magnetic circuit system 3.

Specifically, the basin stand 1 is a runway-shaped structure with rounded corners, and comprises two short shafts 1a which are spaced from each other and are arranged correspondingly, two long shafts 1b which are spaced from each other and are arranged correspondingly, and four rounded corners 1c which are connected to the long shafts 1b and the short shafts 1a respectively, wherein the notches 10 are arranged at the joint of the long shafts 1b and the rounded corners 1c and/or at the joint of the short shafts 1a and the rounded corners 1 c.

In this embodiment, referring to fig. 2, the number of the notches 10 is eight, four of the notches 10 are disposed at the connection between the long axis 1b and the rounded corner 1c, and the other four notches 10 are disposed at the connection between the short axis 1a and the rounded corner 1c, that is, the notches 10 are in smooth transition through the rounded corner 1c, so as to reduce the possibility of air leakage.

Preferably, in the vibration direction of the diaphragm 21, a distance between one end of the short axis 1a away from the diaphragm 21 and a distance between one end of the rounded corner 1c away from the diaphragm 21 and the diaphragm 21 are both smaller than a distance between one end of the long axis 1b away from the diaphragm 21 and the diaphragm 21; adjacent minor axis 1a with major axis 1b along perpendicular to the vibration direction of vibrating diaphragm 21 at least part interval sets up and form constant head tank 10a in corresponding fillet 1c department, breach 10 sets up in the tank bottom of constant head tank 10a, can understand, in the process flow, because form constant head tank 10a, basin frame 1 receives the restriction of its material, if will form constant head tank 10a, it will lead to the formation of breach 10 certainly, can understand that breach 10 is the technology breach.

Vibration system 2 is used for vibrating the sound production, and it includes vibrating diaphragm 21, suspension in magnetic gap 30 and be the runway type structure of taking the fillet and be used for driving vibrating diaphragm 21 vibrates the voice coil 22 of sound production, be used for with voice coil 22 with skeleton 23 and the card that vibrating diaphragm 21 is connected are established and are fixed in constant head tank 10a and with the supplementary vibrating diaphragm subassembly 24 that vibrating diaphragm 21 interval set up, voice coil 22 has the voice coil 220 lead wire 220 of the transmission signal of telecommunication

The vibrating diaphragm 21 includes the annular vibrating portion 211, by the outer ring 212 that rolls over that bends and extends of the outer periphery of vibrating portion 211, by the interior ring 213 that rolls over that bends and extends of the inner periphery of vibrating portion 211, by roll over the ring 212 outward and keep away from one side edge of vibrating portion 211 the first fixed part 214 that bends and extends in the outside of basin frame 1, by first fixed part 214 is kept away from one side of roll over the ring 212 corresponds a plurality ofly a plurality of archs 216 that the breach 10 protrusion formed and by roll over the ring 212 outward and keep away from one side of vibrating portion 211 is respectively along each the second fixed part 215 that the inboard bending of fillet 1c of basin frame 1 extends, roll over the ring 213 and keep away from one side of vibrating portion 211 is fixed in magnetic circuit 3, first fixed part 214 pastes and establishes and is fixed in the outside of basin frame 1, each arch 216 correspondence is acceptd in each breach 10. On the premise of satisfying the positioning, the sealing performance problem is considered, so that the sealing performance of the sounding device 100 is better, the reliability is improved, meanwhile, the whole volume of the sounding device 100 is not increased, and the space utilization rate is high.

Preferably, the orthographic projection of the first fixing portion 214 along the vibration direction of the diaphragm 21 is rectangular, the protrusions 216 are all disposed at the right angle of the rectangle, and the number of the protrusions 216 corresponding to the notches 10 is eight.

Furthermore, the ends of the two protrusions 216 located at the same right angle, which are far away from the first fixing portion 214, are both connected to the same second fixing portion 215, and each second fixing portion 215 is respectively attached and fixed to the inner side of each fillet 1 c; the second fixing portion 215 and the first fixing portion 214 form a gap 217 at an interval, and the four rounded corners 1c are respectively and correspondingly accommodated in the four gaps 217. With this structure, the sound production device 100 has better sealing performance. Of course, the diaphragm 21 and the frame 1 may be formed integrally.

The bobbin 23 includes the laminating in the vibrating diaphragm 21 is close to the bobbin body 231 of voice coil 22 one side, by the bobbin body 231 is kept away from the one end of vibrating diaphragm 21 is to being close to the magnetic gap 30 direction is buckled and is extended and connect in the bobbin connecting arm 232 of voice coil 22.

The auxiliary diaphragm assembly 24 is fixed on one side of the basin stand 1 close to the magnetic circuit system 3. Specifically, supplementary vibrating diaphragm subassembly 24 card is established and is fixed in constant head tank 10a can fix a position to basin frame 1 fast, and its minor axis 1a is close to highly being less than major axis 1b of supplementary vibrating diaphragm subassembly 24 one side for supplementary vibrating diaphragm subassembly 24 does not occupy the height of sound production device along vibrating diaphragm 21 vibration direction when carrying out quick fixed through basin frame 1, and space utilization is better.

Magnetic circuit 3 including the yoke 31 that is fixed in basin frame 1, be fixed in main magnet steel unit 32, the interval of yoke 31 set up in main magnet steel unit 32 week side and with main magnet steel unit 32 encloses into the vice magnet steel unit 33 and the lid of magnetic gap 30 jointly and locate the magnetism bowl 34 of main magnet steel unit 32, the week side butt of magnetism bowl 34 is fixed in vice magnet steel unit 33, interior book ring 213 keeps away from one side of vibration portion 211 is fixed in magnetism bowl 34, magnetism bowl 34 is including running through clearance 340 above that, and voice coil lead 220 warp clearance 340 forms the electricity with the external electrical signal and is connected, and skeleton linking arm 232 warp clearance 340 is to being close to the magnetic gap 30 direction is buckled and is extended. Specifically, the magnetic bowl 34 includes a main body 341 fixed to the main magnetic steel unit 32 on the side away from the magnetic yoke 31, an extension 343 fixed to the auxiliary magnetic steel unit 33 on the side away from the magnetic yoke 31, and a connecting portion 342 extending from the main body 341 along the circumferential side of the main magnetic steel unit 32 and connected to the extension 343, and the connecting portion 342 penetrates through the gap 340.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A sound production device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and produce sound, the vibration system comprises a vibrating diaphragm and a voice coil which drives the vibrating diaphragm to vibrate and produce sound, the sound production device is characterized in that,

2. The sounding device according to claim 1, wherein the frame is a racetrack structure with rounded corners, and comprises two short axes spaced apart from each other and disposed correspondingly, two long axes spaced apart from each other and disposed correspondingly, and four rounded corners connected to the long axes and the short axes respectively, wherein the notch is disposed at a connection between the long axes and the rounded corners and/or at a connection between the short axes and the rounded corners.

3. The sounding device according to claim 2, wherein the first fixing portion has a rectangular shape in an orthographic projection along the vibration direction of the diaphragm, and the protrusions are disposed at right angles of the rectangular shape; the diaphragm also comprises second fixing parts which are bent and extended along the inner sides of the round corners from one side of the outward-folding ring, which is far away from the vibration part, the ends, which are far away from the first fixing parts, of the bulges at the same right angle are connected to the same second fixing parts, and each second fixing part is respectively attached and fixed to the inner side of each round corner; the second fixing part and the first fixing part form gaps at intervals, and each fillet is correspondingly accommodated in each gap.

4. The sound production device of claim 2, wherein, along the vibration direction of the diaphragm, the distance between the end of the short axis far away from the diaphragm and the distance between the end of the round angle far away from the diaphragm and the diaphragm are both smaller than the distance between the end of the long axis far away from the diaphragm and the diaphragm.

5. The sounding device as claimed in claim 4, wherein a positioning groove is formed adjacent to the short axis and the long axis along a direction perpendicular to the vibration direction of the diaphragm and at a position corresponding to the rounded corner, and the vibration system further comprises an auxiliary diaphragm assembly fixed to the positioning groove in a snap fit manner and spaced from the diaphragm.

6. The sounding device according to claim 1, wherein the magnetic circuit system comprises a magnetic yoke fixed to the frame, a main magnetic steel unit fixed to the magnetic yoke, an auxiliary magnetic steel unit disposed at an interval around the main magnetic steel unit and enclosing a magnetic gap with the main magnetic steel unit, and a magnetic bowl covered on the main magnetic steel unit, the voice coil is suspended in the magnetic gap, the peripheral side of the magnetic bowl is abutted against and fixed to the auxiliary magnetic steel unit, and one side of the inward-folded ring away from the vibrating portion is fixed to the magnetic bowl.

7. The sounder device according to claim 6, wherein the magnetic bowl comprises a gap therethrough, and wherein the voice coil further comprises voice coil leads electrically connected to external electrical signals through the gap.

8. The sounding device according to claim 7, wherein the vibration system further comprises a bobbin connecting arm for connecting the voice coil and the diaphragm, wherein the bobbin comprises a bobbin body attached to one side of the diaphragm close to the voice coil, and a bobbin connecting arm extending from one end of the bobbin body far away from the diaphragm to the direction close to the magnetic gap through the gap and connected to the voice coil.

9. The sounder device according to claim 1, wherein the frame is made of a metallic material.