CN212628396U

CN212628396U - Sound membrane and loudspeaker

Info

Publication number: CN212628396U
Application number: CN202021173772.2U
Authority: CN
Inventors: 宋威; 钟志威; 张帆; 金鑫
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-26
Anticipated expiration: 2030-06-22
Also published as: WO2021258410A1

Abstract

The utility model provides a sound membrane and speaker, the sound membrane includes: the ball top is arranged at the center, the folding ring extends around the ball top, the folding ring comprises a middle part and a first fixing part extending towards the ball top along the inner circumference of the middle part, the first fixing part is connected with the ball top in a gluing mode, the first fixing part is provided with a gluing surface bonded with the ball top, a retaining wall surrounding a circle is formed by surrounding the ball top on one side, close to the middle part, of the gluing surface of the first fixing part, and therefore a limiting characteristic can be provided for assembly of the ball top and the folding ring, and the more excellent concentricity level of the ball top and the folding ring is achieved; in addition, the retaining wall can effectively intercept glue overflowing to pollute the folded ring, the intercepted overflowing glue can be accumulated in the height direction to wrap more side walls of the ball top, the gluing area of the ball top and the folded ring is increased, the gluing force between the ball top and the folded ring is favorably improved, and the risk of separating the ball top from the sound membrane is reduced.

Description

Sound membrane and loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric conversion technical field, concretely relates to sound membrane and speaker.

[ background of the invention ]

With the development of science and technology, more and more electronic devices are built in with speakers. Generally, the loudspeaker can provide even strong magnetic field through the magnet steel, makes the voice coil loudspeaker voice coil that leads to alternating current vibrate in even strong magnetic field, and the voice coil loudspeaker voice coil drives the vibrating diaphragm vibration and makes the loudspeaker produce sound.

The sound film in the prior art can be formed by matching the corrugated rim and the dome, the corrugated rim and the dome are required to be assembled by means of indirect positioning of a tool and other parts in a sound film structure, after a fixing part of the corrugated rim is bonded with the dome, glue overflowing will spread out according to the flowing property of the glue, the glue can directly pollute the corrugated rim when serious, the overflowing degree of the glue is uncontrollable, and the glue overflowing state of a circle is inconsistent.

Therefore, there is a need for a new sound membrane and speaker.

[ summary of the invention ]

An object of the utility model is to provide a sound membrane and speaker through set up the barricade between book ring and first fixed part, can provide spacing characteristic for the ball crown with book the ring assembly to the excessive glue of interception avoids the excessive ring of gluing to roll over.

The technical scheme of the utility model as follows: the utility model provides a sound membrane, sound membrane is including the dome that is located central authorities and center on the ring that rolls over that the dome extends, roll over the ring and include the intermediate part and follow the internal periphery of intermediate part to the first fixed part that the dome extends, first fixed part with the dome veneer links to each other, first fixed part be equipped with the cemented surface that the dome bonded, the cemented surface of first fixed part is close to one side of intermediate part is equipped with the barricade, the barricade be with the annular that first fixed part corresponds and encircle the dome encloses establishes a week, the barricade with form the clearance between the dome, the clearance is used for holding the dome with excessive glue after the first fixed part veneer.

Preferably, the retaining wall includes four straight edge portions and four rounded corner portions respectively connecting two adjacent straight edge portions, the rounded corner portions are in the height of the sound diaphragm vibration direction is greater than the height of the straight edge portions in the sound diaphragm vibration direction.

Preferably, the edge ring further includes a second fixing portion extending along an outer peripheral edge of the middle portion away from the first fixing portion, and a third fixing portion extending from an end of the second fixing portion away from the middle portion to the end away from the second fixing portion.

Preferably, the middle part is a convex structure, the convex structure is surrounded into a rounded rectangle, and the convex structure corresponding to the rounded corner is provided with a sunken fold.

The utility model also provides a loudspeaker, which comprises a frame body, a magnetic circuit system arranged in the frame body and a vibration system connected with the frame body and the magnetic circuit system, wherein the magnetic circuit system drives the vibration system to vibrate,

the vibration system comprises a first sound film fixed on the frame body, and the first sound film comprises the sound film structure.

Preferably, the second fixing portion and the third fixing portion of the first diaphragm are in contact with the frame, and the vibration system further includes a voice coil disposed in the magnetic gap of the magnetic circuit system, and a vibration ring interposed between the voice coil and the dome of the first diaphragm.

Preferably, the vibration system further includes a frame sleeved outside the voice coil and abutting against the frame, a flexible circuit board abutting against one side of the first sound film and a second sound film abutting against one side of the frame, wherein the flexible circuit board and the vibration ring are far away from the first sound film, and the second sound film is far away from one side of the frame.

Preferably, the ring that shakes includes with the fillet rectangle main part of voice coil butt a week and certainly the fillet of main part is to the support that flexible circuit board extends, the support with flexible circuit board butt.

Preferably, the magnetic circuit system comprises a lower clamping plate, a main magnetic steel component arranged on the lower clamping plate and an auxiliary magnetic steel component arranged around the main magnetic steel component, and the magnetic gap is formed between the auxiliary magnetic steel component and the main magnetic steel component.

Preferably, vice magnet steel subassembly includes the centre gripping a pair of first pair magnet steel of skeleton and with the skeleton is kept away from the vice magnet steel of second of first sound membrane one side butt, flexible circuit board with the second sound membrane encloses to be located the vice magnet steel of second.

The beneficial effects of the utility model reside in that: there is provided a sound diaphragm and a loudspeaker, the sound diaphragm comprising: the ball top is arranged at the center, the folding ring extends around the ball top, the folding ring comprises a middle part and a first fixing part extending towards the ball top along the inner circumference of the middle part, the first fixing part is connected with the ball top in a gluing mode, the first fixing part is provided with a gluing surface bonded with the ball top, a retaining wall surrounding a circle is formed by surrounding the ball top on one side, close to the middle part, of the gluing surface of the first fixing part, and therefore a limiting characteristic can be provided for assembly of the ball top and the folding ring, and the more excellent concentricity level of the ball top and the folding ring is achieved; in addition, the retaining wall can effectively intercept glue overflowing to pollute the folded ring, the intercepted overflowing glue can be accumulated in the height direction to wrap more side walls of the ball top, the gluing area of the ball top and the folded ring is increased, the gluing force between the ball top and the folded ring is favorably improved, the risk of separating the ball top from a sound membrane is reduced, and the symmetry of a vibration system is improved.

[ description of the drawings ]

Fig. 1 is a schematic view of a sound membrane structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of the diaphragm of FIG. 1;

FIG. 3 is a sectional view of the sound diaphragm of FIG. 1 taken along line A-A;

fig. 4 is a schematic structural diagram of the speaker of the present invention;

FIG. 5 is a partially exploded view of the speaker of FIG. 4;

FIG. 6 is an exploded view of the speaker of FIG. 4;

fig. 7 is a sectional view of the speaker of fig. 4 taken along the line B-B.

Description of the drawings: a sound membrane 100; a dome 110; a fold 120; the intermediate portion 121; a first fixing portion 122; a retaining wall 123; a right-angled portion 1231; rounded portions 1232; glue overflow 124; a second fixing portion 125; a third fixing portion 126; pleats 127; a bonding surface 128; a speaker 200; a frame body 1; a vibration system 2; a voice coil 21; a vibrating ring 22; a main body 221; a bracket 222; a skeleton 23; a relief portion 231; a flexible circuit board 24; a second diaphragm 25; a magnetic circuit system 3; a lower clamp plate 31; a main magnetic steel component 32; a secondary magnetic steel assembly 33; a first secondary magnetic steel 331; and a second secondary magnetic steel 332.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1-3, an embodiment of the present invention provides a sound membrane 100, where the sound membrane 100 includes a dome 110 at the center and a corrugated rim 120 extending around the dome 110. The corrugated rim 120 includes a middle portion 121 and a first fixing portion 122 extending toward the dome 110 along an inner circumference of the middle portion 121, a gluing surface 128 is disposed on the first fixing portion 122, the first fixing portion 122 is glued to the dome 110 through the gluing surface 128, a retaining wall 123 is disposed on one side of the gluing surface 128 of the first fixing portion 122 close to the middle portion 121, the retaining wall 123 is in a ring shape corresponding to the first fixing portion 122 and surrounds the dome 110, a gap is disposed between the retaining wall 123 and the dome 110, and the gap is used for accommodating an overflow glue 124 after the dome 110 and the first fixing portion 122 are glued.

According to the sound film 100 provided by the embodiment of the invention, the annular retaining wall 123 surrounding the dome 110 for one circle is arranged on one side of the gluing surface of the first fixing part 122 close to the middle part 121, so that a limiting characteristic can be provided for the assembly of the dome 110 and the corrugated rim 120, and a better concentricity level of the dome 110 and the corrugated rim 120 is realized; in addition, the overflowing glue 124 of the dome 110 in the sound film 100 after the first fixing portion 122 is bonded is intercepted by a circumferential retaining wall 123, and the overflowing glue 124 can be stacked in the direction of vibration to wrap more side walls of the dome 110, so that the gluing area of the dome 110 and the corrugated rim 120 is increased, the gluing force between the dome 110 and the corrugated rim 120 is improved, and the risk of separating the corrugated rim 120 from the dome 110 is reduced.

In an alternative embodiment, referring to fig. 2 and fig. 3, the dome 110 is a rounded rectangle, the retaining wall 123 includes four straight sides 1231 and four rounded corners 1232 respectively connecting two adjacent straight sides 1231, the rounded corners 1232 correspond to four rounded corners of the dome 110, the straight sides 1232 correspond to rectangular sides of the dome 110, and the height of the rounded corners 1232 in the vibration direction of the diaphragm 100 is greater than the height of the straight sides 1231 in the vibration direction of the diaphragm. Through the arrangement of the retaining wall 123, when the overflowing glue 124 is retained in the retaining wall 123, the round corner part 1232 is locally heightened to ensure the effect of retaining the overflowing glue 124, and the symmetry of the vibration system 2 where the sound film 100 is located is improved.

In an alternative embodiment, referring to fig. 2 and fig. 3, the corrugated rim 120 further includes a second fixing portion 125 extending along an outer periphery of the middle portion 121 and away from the first fixing portion 122, and an end of the second fixing portion 125 away from the middle portion 121 is bent and extended away from the second fixing portion 125 to form a third fixing portion 126. The second fixing portion 125 and the third fixing portion 126 may be provided with adhesive surfaces, and the third fixing portion 126 may increase the adhesive area of the second fixing portion 125, thereby ensuring the firmness of the assembly of the sound membrane 100.

In an alternative embodiment, referring to fig. 2 and 3, the middle portion 121 is a convex structure, the convex structure is surrounded by a rounded rectangle, and the convex structure corresponding to the rounded corners is provided with concave corrugations 127.

The utility model also provides a loudspeaker 200, please refer to fig. 4-7, loudspeaker 200 includes framework 1, locate magnetic circuit 3 in framework 1 and the vibration system 2 of being connected with framework 1 and magnetic circuit 3, and magnetic circuit 3 drives vibration system 2 and vibrates, and vibration system 2 is including the first sound membrane of fixing in framework 1, and first sound membrane includes the structure of sound membrane 100 of the record in the foregoing.

In an alternative embodiment, referring to fig. 6-7, the second fixing portion 125 of the diaphragm 100 is bonded to the top of the frame 1, the third fixing portion 126 is bonded to the side wall of the frame 1, the vibration system 2 further includes a voice coil 21 disposed in the magnetic gap of the magnetic circuit system 3, and a vibrating ring 22 interposed between the voice coil 21 and the dome 110 of the diaphragm 100, and the middle portion 121 of the diaphragm 100 protrudes away from the vibrating ring 22. Optionally, the voice coil 21 is a rounded rectangle, the vibrating ring 22 includes a main body 221 abutting against the top of the voice coil 21 for a circle, the main body 221 is a rounded rectangle, and a support 222 extends from a rounded corner of the main body 221, and in this embodiment, there are 4 supports 222.

In an alternative embodiment, referring to fig. 5-7, the vibration system 2 further includes a bobbin 23 disposed between the voice coil 21 and the frame 1, the bobbin 23 being abutted against the voice coil 21 and the frame 1, respectively; a flexible circuit board 24 abutting on the side of the frame 23 and the diaphragm 22 away from the diaphragm 100, and a second diaphragm 25 abutting on the side of the flexible circuit board 24 away from the frame 23. Preferably, the flexible circuit boards 24 are paired, and one flexible circuit board 24 is provided in each of the short axis directions of the speaker 200. The second voice films 25 are also provided in a pair, and are disposed in correspondence with the flexible circuit board 24. Optionally, the bracket 222 abuts the flexible circuit board 24. The holder 222 and the frame 23 are both abutted against the flexible circuit board 24, and the holder 222 is disposed in the relief portion 231 in the frame 23.

In an alternative embodiment, referring to fig. 5 and 7, the magnetic circuit system 3 includes a lower clamping plate 31, a main magnetic steel assembly 32 and a secondary magnetic steel assembly 33 surrounding the main magnetic steel assembly 32 are disposed at the center of the lower clamping plate 31, and a magnetic gap is formed between the secondary magnetic steel assembly 33 and the main magnetic steel assembly 32. Vice magnet steel subassembly 33 and skeleton 23 butt, optional, vice magnet steel subassembly 33 includes a pair of first vice magnet steel 331 of centre gripping skeleton 23 and keeps away from the vice magnet steel 332 of second of sound membrane 100 one side butt with skeleton 23, and flexible circuit board 24 and second sound membrane 25 enclose to locate the vice magnet steel 332 of second.

The above are only embodiments of the present invention, 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. The utility model provides a sound membrane, its characterized in that, sound membrane is including the dome that is located central authorities and around the ring that rolls over that the dome extends, roll over the ring and include the intermediate part and follow the internal peripheral of intermediate part to the first fixed part that the dome extends, first fixed part with the dome veneer links to each other, first fixed part be equipped with the cemented surface that the dome bonded, the cemented surface of first fixed part is close to one side of intermediate part is equipped with the barricade, the barricade be with the annular that first fixed part corresponds and encircle the dome encloses establishes a week, the barricade with form the clearance between the dome, the clearance is used for holding the dome with excessive glue after the first fixed part veneer.

2. The diaphragm according to claim 1 wherein said retaining wall comprises four straight side portions and four rounded portions respectively connecting two adjacent straight side portions, said rounded portions having a height in said diaphragm vibration direction greater than a height of said straight side portions in said diaphragm vibration direction.

3. The sound diaphragm according to claim 2, wherein the corrugated rim further includes a second fixing portion extending along an outer periphery of the middle portion away from the first fixing portion, and a third fixing portion extending from an end of the second fixing portion away from the middle portion toward the second fixing portion.

4. The sound diaphragm according to claim 3, wherein the middle portion is a convex structure, the convex structure is enclosed into a rounded rectangle, and concave folds are provided on the convex structure corresponding to the rounded corners.

5. A loudspeaker, characterized in that the loudspeaker comprises a frame body, a magnetic circuit system arranged in the frame body and a vibration system connected with the frame body and the magnetic circuit system, the magnetic circuit system drives the vibration system to vibrate,

the vibration system comprises a first diaphragm held to the frame, the first diaphragm comprising the diaphragm of any one of claims 1-4.

6. The loudspeaker of claim 5,

the second fixing part and the third fixing part of the first sound film are abutted to the frame body, and the vibration system further comprises a voice coil arranged in a magnetic gap of the magnetic circuit system and a vibration ring clamped between the voice coil and the ball top of the first sound film.

7. The loudspeaker of claim 6,

the vibration system further comprises a framework, a flexible circuit board and a second sound film, wherein the framework is sleeved outside the voice coil and abutted to the framework, the flexible circuit board is abutted to one side of the first sound film and is kept away from the vibration ring, and the second sound film is abutted to one side of the framework and is kept away from the flexible circuit board.

8. The loudspeaker of claim 7, wherein the vibrating ring comprises a rounded rectangular body abutting the voice coil for a circumference and a bracket extending from a rounded corner of the body toward the flexible circuit board, the bracket abutting the flexible circuit board.

9. The loudspeaker of claim 7, wherein the magnetic circuit system comprises a lower clamp plate, a primary magnetic steel component disposed on the lower clamp plate, and a secondary magnetic steel component surrounding the primary magnetic steel component, the secondary magnetic steel component and the primary magnetic steel component forming the magnetic gap therebetween.

10. The loudspeaker of claim 9, wherein the secondary magnetic steel assembly comprises a pair of first secondary magnetic steels clamping the frame and a second secondary magnetic steel abutting against the frame away from one side of the first diaphragm, and the flexible circuit board and the second diaphragm are enclosed in the second secondary magnetic steel.