CN211184231U

CN211184231U - Loudspeaker with good sound reduction performance

Info

Publication number: CN211184231U
Application number: CN201921829582.9U
Authority: CN
Inventors: 翁伟; 张美华; 颜萍
Original assignee: Dongtai Pengmei Electronic Industry Co ltd
Current assignee: Dongtai Pengmei Electronic Industry Co ltd
Priority date: 2019-04-24
Filing date: 2019-10-29
Publication date: 2020-08-04
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a loudspeaker with good sound reduction performance, which comprises a basin frame, a cone, a voice coil and an elastic wave, wherein the periphery of the cone is connected with the basin frame through a pad edge, a connecting convex ring is arranged on the basin frame, and a corresponding connecting ring groove is arranged on the pad edge and is buckled with the connecting convex ring; three flanges are axially arranged on the voice coil barrel of the voice coil, the inner periphery of the elastic wave is clamped between the two flanges at the lower part, and the lower edge of the inner periphery of the paper cone is placed on the flange at the upper part; the voice coil barrel is also provided with a convex ring, the lower end of the voice coil barrel is provided with a flange, and a coil of the voice coil is positioned between the convex ring and the flange; the side wall of the voice coil barrel is provided with a plurality of strip-shaped through holes which are parallel to the axial direction of the voice coil barrel. The utility model discloses a speaker with good sound reducing property can guarantee between basin pad limit and the basin frame and the voice coil loudspeaker voice coil and play reliable being connected between the ripples, can also avoid coil displacement in the voice coil loudspeaker voice coil.

Description

Loudspeaker with good sound reduction performance

Technical Field

The utility model relates to a speaker especially relates to an improvement of moving coil formula cone speaker.

Background

The loudspeaker usually consists of a cone, a voice coil, a magnetic circuit system and a cone frame, wherein a voice current signal is input into a coil of the voice coil, so that the voice coil generates an electrodynamic force corresponding to the input voice current signal in the magnetic circuit system, under the action of the electrodynamic force, the voice coil generates alternating axial motion, the cone connected with the voice coil vibrates in the axial direction of the voice coil, and repeatedly pushes air to generate sound corresponding to the voice current signal. The cone is usually connected through the adhesive through the cone installation face on the hem utilization pad limit of periphery and basin frame, if the adhesive coats unevenly in the speaker manufacturing process, or the difference of adhesive composition, performance, will cause to fill up the fastness of bonding between limit and the basin frame and can not obtain the assurance in long-term work in-process, will probably cause the adhesive bonding between limit and the basin frame to produce and peel off, then the vibration of cone will receive its influence and skew normal direction, make the speaker can't send the sound corresponding with sound electric current signal, sound reduction performance variation. The reliable connection between the cone and the voice coil is the basis for the voice coil to drive the cone to vibrate, in order to ensure that the voice coil stably runs up and down in a narrow magnetic gap, elastic waves are also arranged between the voice coil and the cone frame, and the voice coil is supported by the elastic waves to ensure that the voice coil can flexibly run along the axial direction, in the long-term running process of the loudspeaker, the working state of overload running cannot happen inevitably, for example, a power amplifier suddenly outputs a very large instant energy which can be formed by suddenly opening sound, at the moment, the input current of the loudspeaker is suddenly increased to enable the voice coil to generate instant abnormal electrodynamic force corresponding to the input sound current signal which is suddenly increased in a magnetic circuit system, the loudspeaker can have strong vibration, and abnormal acting force can be generated at the connection parts between the voice coil and the cone inner ring and between the voice coil and the elastic wave inner ring, so that the connection between the cone and the cone inner ring and between the voice coil and the elastic wave inner ring can be damaged, the existing loudspeaker voice coil and the cone inner ring and the voice coil and the damper inner ring are connected by the adhesive completely, when abnormal acting force is generated between the voice coil and the cone inner ring and between the voice coil and the damper inner ring, a certain weak point at the joint is formed, if the abnormal acting force is greater than the binding force of the adhesive, the adhesive can be peeled off, so that the voice coil cannot normally drive the cone to vibrate, the supporting and centering effect of the damper on the voice coil can be weakened, the voice coil cannot be guaranteed to flexibly operate along the axial direction, the movement corresponding to the sound current signal cannot be generated, the cone cannot normally emit the sound corresponding to the sound current signal, the sound cannot be normally restored, the adhesive can be gradually and completely peeled off to lose the connection effect, and the loudspeaker is damaged. In addition, the coil in the voice coil is sleeved and inserted on the voice coil cylinder body and fixedly connected with the voice coil cylinder body through the adhesive, when the loudspeaker is in an overload state, large abnormal acting force is generated, impact is caused on connection between the coil and the voice coil cylinder body, the adhesive is peeled off, and the coil is displaced, so that the movement of the voice coil cylinder body is asynchronous with the movement of the coil, the sound generated by the vibration of the cone cannot correspond to the sound which is required to be generated in the sound current signal, and the loudspeaker cannot be stably restored and cannot normally work.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art exists, the utility model aims to solve the technical problem that a speaker with good sound reducing performance is provided, it can guarantee between cone pad limit and the basin frame and the voice coil loudspeaker voice coil and play reliable connection between the ripples, can also avoid coil aversion in the voice coil loudspeaker voice coil.

In order to solve the technical problem, the utility model discloses a loudspeaker with good sound reducing performance, including basin frame, cone, voice coil loudspeaker voice coil, play ripples, be equipped with the hem at the cone periphery, the hem is connected with the cone installation face on the basin frame through the bed hedge, be equipped with three flanges along the axial on the voice coil loudspeaker voice coil barrel of voice coil loudspeaker voice coil, this flange protrusion is in the voice coil loudspeaker voice coil barrel periphery, the interior circumference clamp of play ripples is placed between two flanges in the below, the interior circumference lower border of cone is shelved on a flange in the top; the voice coil is characterized in that a convex ring is further arranged on the voice coil barrel, the convex ring protrudes out of the periphery of the voice coil barrel, a flanging is arranged at the lower end of the voice coil barrel, the outer edge of the flanging protrudes out of the periphery of the voice coil barrel, a coil of the voice coil is positioned between the convex ring and the flanging, and the outer diameter D of the convex ring and the outer diameter e of the flanging are both smaller than the outer diameter D of the coil; the side wall of the voice coil barrel is provided with a plurality of strip-shaped through holes, the strip-shaped through holes positioned at the same axial position are uniformly distributed along the circumferential direction of the voice coil barrel, and the length direction of the strip-shaped through holes is parallel to the axial direction of the voice coil barrel; the paper cone installing surface on the cone frame is provided with a connecting convex ring, the connecting convex ring is annularly arranged on the paper cone installing surface, a connecting ring groove corresponding to the connecting convex ring is arranged on the installing surface of the pad edge, the connecting ring groove is buckled with the connecting convex ring, a gap t is arranged between the bottom of the connecting ring groove and the top surface of the connecting convex ring, and the gap t is 0.2-0.6 mm.

In the structure, as the voice coil barrel of the voice coil is provided with three flanges along the axial direction, the flanges protrude out of the periphery of the voice coil barrel, the inner periphery of the elastic wave is clamped between the two flanges at the lower part, the lower edge of the inner periphery of the cone is arranged on the flange at the upper part, so that the connection between the voice coil and the inner ring of the cone and the connection between the voice coil and the inner ring of the elastic wave are not only realized by adhesive as in the conventional loudspeaker, but also are strengthened and connected by the arranged flanges, the inner ring of the cone can be clamped between the dustproof cap of the voice coil and the flange at the upper part, the driving force of the voice coil driving the cone to vibrate is not transmitted by the bonding force of the adhesive simply, and is also transmitted by the flanges and the dustproof cap, thus even if the abnormal acting force occurs under the overload operation condition that the loudspeaker generates strong vibration by outputting a great instant energy due to the sudden opening of power amplifier sound, the phenomenon that the weak point of the adhesive is degummed and stripped is difficult to occur; similarly, the elastic wave inner ring clamped between the two flanges below is also more reliably connected with the voice coil cylinder, and the phenomenon that the centering support of the voice coil is lost due to degumming of the joint is avoided, so that reliable connection between the voice coil and the cone and between the voice coil and the elastic wave is ensured, and sound can be well restored.

And because the voice coil barrel is also provided with a convex ring which protrudes out of the periphery of the voice coil barrel, the lower end of the voice coil barrel is provided with a flange, the outer edge of the flange protrudes out of the periphery of the voice coil barrel, the coil of the voice coil is positioned between the convex ring and the flange, and the outer diameter D of the convex ring and the outer diameter e of the flange are both smaller than the outer diameter D of the coil, the coil in the voice coil is reliably positioned and connected between the convex ring and the flange, so that the phenomenon that the bonding performance of an adhesive is reduced due to overhigh temperature of the voice coil or the phenomenon that the voice coil and the voice coil barrel are loosened and displaced due to abnormal acting force generated by overload operation can be avoided, and the position stability of the coil.

Still owing to be equipped with a plurality of strip through-holes on voice coil loudspeaker voice coil barrel lateral wall, the strip through-hole that is located same axial position is along voice coil loudspeaker voice coil barrel circumference equipartition, and the length direction and the voice coil loudspeaker voice coil barrel axial direction of strip through-hole are parallel, and the strip through-hole that then sets up both can alleviate the weight of voice coil loudspeaker voice coil, promote the flexibility of voice coil loudspeaker voice coil operation and improve the electro-acoustic conversion effect, and the heat dissipation of voice coil loudspeaker voice coil of can.

Because be equipped with on the cone installation face on the basin frame and connect the bulge loop, should connect the bulge loop and become cyclic annular and set up on the cone installation face be equipped with on the installation face of pad limit and be connected the corresponding connection annular of bulge loop, this connection annular with be connected bulge loop lock joint be equipped with clearance t between the tank bottom of connection annular and the connection bulge loop top surface, this clearance t is 0.2 ~ 0.6 millimeter, then the pad limit for connecting cone and basin frame no longer only relies on the adhesive on two relative connection planes to come erection joint, but through the connection annular that sets up and connect the bulge loop after lock joint again through adhesive fixed connection to avoided the cone and the basin frame that the coating inequality or the difference of adhesive composition performance that probably exist to cause and be connected insecure, the possibility of coming unstuck, guaranteed the reliable connection between cone pad limit and the basin frame the tank bottom of connection annular and be connected the 0.2 ~ 0.6 clearance t that is equipped with between the bulge loop top surface on the one hand The cushion edge can be ensured to be attached and connected on the cushion edge mounting and connecting surface on the cushion edge bottom surface and the basin frame, and on the other hand, the cushion edge can also contain a corresponding amount of adhesive to ensure the bonding effect.

By adopting the technical scheme, the connection between the cone, the voice coil and the cone frame and between the voice coil barrel and the coil in the voice coil can be reliable, the condition that the cone moves and the sound current signal does not correspond to each other to cause sound distortion due to looseness between the cone, the cone frame and the voice coil and between the voice coil barrel and the coil can not occur, the cone can normally sound, and the loudspeaker is ensured to have good sound reduction performance.

The utility model discloses a preferred embodiment, it is dovetail or rectangle to connect the bulge loop cross-section, the cross-section of connecting the annular is dovetail or the rectangle corresponding with the bulge loop cross-section. By adopting the embodiment, the connecting convex ring with the dovetail-shaped or rectangular cross section and the corresponding connecting ring groove can ensure that the connection between the pad edge and the basin frame is reliable, particularly, the connecting convex ring with the dovetail-shaped cross section and the corresponding connecting ring groove are adopted, so that the buckling effect between the pad edge and the basin frame is better, and the vibration sound production effect of the paper basin can not be influenced even if a small amount of glue-lacking parts exist.

The utility model discloses a another kind of preferred embodiment, the tank bottom of connecting the annular is 0.3 ~ 0.4 millimeter with the clearance t between the connection bulge loop top surface. By adopting the embodiment, the gap t of 0.3-0.4 mm between the groove bottom of the connecting ring groove and the top surface of the connecting convex ring can correspond to the gluing thickness of the corresponding adhesive, and the bonding effect is good.

The utility model discloses a preferred embodiment, the flange is for setting up in a plurality of lugs of voice coil loudspeaker voice coil barrel periphery, and these a plurality of lugs set up along the circumference equipartition on the cross section of voice coil loudspeaker voice coil barrel. Adopt this embodiment, the function of flange can be reached under the prerequisite that does not increase too much voice coil loudspeaker voice coil weight to a plurality of lugs of equipartition in voice coil loudspeaker voice coil barrel periphery, also makes voice coil loudspeaker voice coil mass distribution even simultaneously, does not influence the flexibility of voice coil loudspeaker voice coil operation.

The utility model discloses further preferred embodiment, the root of lug is even as an organic whole with the voice coil loudspeaker voice coil barrel, and this lug is for offering on voice coil loudspeaker voice coil barrel lateral wall and is the flaky body that forms after U type incision institute intercepting position turns up, the strip through-hole is the through-hole that forms after this intercepting position turns up. By adopting the implementation mode, the lug is made of the material of the voice coil cylinder body, so that the flange is formed, the weight of the voice coil cannot be increased, meanwhile, the weight reduction and heat dissipation through holes in the voice coil cylinder body are formed, the structure is unique, and the functional requirements are met.

In another preferred embodiment of the present invention, the protruding length a of the protruding piece is less than or equal to the length b of the strip-shaped through hole. By adopting the embodiment, the lug is made of the material of the voice coil cylinder body, and the strip-shaped through hole can be ensured to determine the proper length on the premise of not being limited by the protruding length of the lug as required.

In a further preferred embodiment of the present invention, the cross-sectional shape of the protruding ring on the axial cross-section of the voice coil cylinder is V-shaped or circular arc-shaped. By adopting the embodiment, the gap is reserved between the convex ring with the V-shaped or arc-shaped cross section and the coil, which is beneficial to accommodating the adhesive, and in addition, the convex ring can be formed in a rolling mode, so that the manufacturing and processing are convenient.

The utility model discloses further preferred embodiment, the cross sectional shape of turn-ups on voice coil loudspeaker voice coil barrel axle cross-section is convex. By adopting the embodiment, the flanging with the arc-shaped cross section can be conveniently flanged and formed during coil assembly, and the gap between the arc-shaped flanging and the coil is beneficial to containing adhesive.

In a further preferred embodiment of the present invention, the folded edge is integrally connected to the rim. By adopting the embodiment, the variety of parts can be reduced, and the manufacturing and processing are convenient.

In a further preferred embodiment of the present invention, the voice coil cylinder is an aluminum cylinder. By adopting the embodiment, the aluminum voice coil barrel body has light weight and high mechanical strength, can be conveniently processed, intercepted and turned outwards to form the convex sheet and the flanging and form the strip-shaped through hole, and can also be conveniently rolled to form the convex ring.

Drawings

The speaker with good sound reduction performance according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of an embodiment of the speaker with good sound reduction performance of the present invention;

FIG. 2 is a schematic diagram of the structure of the voice coil in the structure of FIG. 1;

FIG. 3 is a cross-sectional view taken at location A-A of the structure shown in FIG. 2;

fig. 4 is a partially enlarged view of the portion I in the structure shown in fig. 1.

In the figure: 1-basin frame, 2-cone, 3-elastic wave, 4-magnetic loop system, 5-voice coil, 51-voice coil barrel, 511-strip through hole, 512-flanging, 513-flange, 5131-lug, 514-convex ring, 52-coil, 6-flanging, 7-pad edge, 71-connecting ring groove and 8-connecting convex ring.

Detailed Description

In the loudspeaker with good sound reduction performance shown in fig. 1, a cone frame 1 is used as a supporting structural member of the loudspeaker to provide a mounting and supporting base for a cone 2, a voice coil 5 and a magnetic loop system 4, a hem 6 is arranged at the periphery of the cone 1, the hem 6 is connected with a cone mounting surface on the cone frame 1 through a cushion edge 7, referring to fig. 4, a connecting convex ring 8 is arranged on the cone mounting surface on the cone frame 1, the connecting convex ring 8 is annularly arranged on the cone mounting surface, the section of the connecting convex ring 8 is in a dovetail shape, the hem 6 is connected with the cushion edge 7 into a whole, a connecting ring groove 71 corresponding to the connecting convex ring 8 is arranged on the mounting surface of the cushion edge 7, the section of the connecting ring groove 71 is in a dovetail shape corresponding to the section of the connecting convex ring 8, the connecting ring groove 71 is buckled with the connecting convex ring 8 and fixedly connected with the connecting convex ring 8 through an adhesive, a gap t is arranged between the bottom of the, this clearance t is 0.2 ~ 0.6 millimeter, as preferred embodiment, the tank bottom of connecting annular groove 71 and the clearance t between the 8 top surfaces of connecting bulge loop are 0.3 ~ 0.4 millimeter, and the groove depth of connecting annular groove 71 is greater than the height of connecting bulge loop 8 like this, can guarantee to fill up 7 installation bottom surfaces of edge and the laminating of the basin installation face on basin frame 1 mutually and bond, can also guarantee to connect and hold appropriate amount of adhesive between the tank bottom of annular groove 71 and the 8 top surfaces of connecting bulge loop, makes basin 2 and basin frame 1 install reliably and link firmly.

Three ribs 513 are axially arranged on the voice coil cylinder 51 of the voice coil 5, the ribs 513 protrude out of the outer periphery of the voice coil cylinder 51, the voice coil cylinder 51 is an aluminum cylinder, referring to fig. 2 and 3, the ribs 513 are a plurality of protruding pieces 5131 arranged on the outer periphery of the voice coil cylinder 51, that is, the rib 513 is composed of a plurality of protruding pieces 5131 arranged on the outer periphery of the voice coil cylinder 51, the plurality of protruding pieces 5131 are uniformly distributed on the cross section of the voice coil cylinder 51 along the circumferential direction, the root of the protruding pieces 5131 is connected with the voice coil cylinder 51 into a whole, the protruding piece 5131 is a sheet-shaped body formed by turning out a part intercepted by a U-shaped notch formed on the side wall of the voice coil cylinder 51, the inner circumference of the elastic wave 3 is clamped between two flanges 513 below and is bonded through an adhesive, the lower edge of the inner circumference of the paper cone 2 is placed on one flange 513 above, a dust cover arranged at the top end of the voice coil 5 is arranged above the inner circumference of the paper cone 2, and the inner ring of the paper cone 2 is positioned between the dust cover and the flange 513 above and is bonded with the voice coil cylinder 51 through the adhesive; the voice coil barrel 51 is also provided with a convex ring 514, the convex ring 514 protrudes out of the periphery of the voice coil barrel 51, the cross section of the convex ring 514 on the axial section of the voice coil barrel 51 is V-shaped, the lower end of the voice coil barrel 51 is provided with a flange 512, the outer edge of the flange 512 protrudes out of the periphery of the voice coil barrel 51, the cross section of the flange 512 on the axial section of the voice coil barrel 51 is arc-shaped, a coil 52 of the voice coil 5 is positioned between the convex ring 514 and the flange 512, the installation position is limited by the convex ring 514 and the flange 512 and is fixedly connected through an adhesive, and the outer diameter D of the convex ring 514 and the outer diameter e of the flange 512 are both smaller than the outer; the side wall of the voice coil cylinder 51 is provided with a plurality of strip-shaped through holes 511, the strip-shaped through holes 511 positioned at the same axial position are uniformly distributed along the circumferential direction of the voice coil cylinder 51, the length direction of the strip-shaped through holes 511 is parallel to the axial direction of the voice coil cylinder 51, the positions of the strip-shaped through holes 511 correspond to the positions of the protruding pieces 5131, the strip-shaped through holes 511 are through holes formed after the cut parts of U-shaped notches are outwards turned to form the protruding pieces 5131 on the side wall of the voice coil cylinder 51, the strip-shaped through holes 511 determine proper length on the premise of not being limited by the protruding length of the protruding pieces 5131 according to needs, the protruding length a of the protruding pieces 5131 is determined according to the needs of; in the production process, the cutting positions of the U-shaped notches corresponding to the lugs 5131 on each rib 513 need to determine the sequence of the outwards-turned lugs 5131 according to the assembly process among the voice coil cylinder 51, the damper 3, the cone 2 and the basin frame 1.

The above description has been presented only for the purpose of illustrating certain preferred embodiments of the invention, and it is not to be taken as a limitation on the invention, as many modifications and variations are possible. For example, the cross section of the connecting convex ring 8 may be rectangular instead of dovetail, and correspondingly, the cross section of the connecting ring groove 71 may be rectangular corresponding to the cross section of the connecting convex ring 8; the rib 513 may not be formed by a plurality of protruding pieces 5131 arranged on the periphery of the voice coil cylinder 51, but may be formed by a circular ring piece sleeved on the periphery of the voice coil cylinder 51 and fixedly connected with the voice coil cylinder 51; the cross section of the convex ring 514 on the axial section of the voice coil cylinder 51 may not be V-shaped, but may be circular arc; the cross-sectional shape of the flange 512 on the axial cross-section of the voice coil cylinder 51 may not be circular, but may be a straight-sided shape perpendicular to the axial direction of the voice coil cylinder 51. Therefore, any improvement and changes made on the basis of the basic principle of the present invention should be considered as falling within the protection scope of the present invention.

Claims

1. The utility model provides a speaker with good sound reduction performance, includes basin frame (1), cone (2), voice coil loudspeaker voice coil (5), bullet ripples (3), is equipped with hem (6) at cone (2) periphery, and hem (6) are connected with the cone installation face on basin frame (1) through filling up limit (7), its characterized in that: three flanges (513) are axially arranged on a voice coil cylinder (51) of the voice coil (5), the flanges (513) protrude out of the outer periphery of the voice coil cylinder (51), the inner periphery of the elastic wave (3) is clamped between the two flanges (513) at the lower part, and the lower edge of the inner periphery of the paper cone (2) is placed on the flange (513) at the upper part; the voice coil is characterized in that a convex ring (514) is further arranged on the voice coil cylinder (51), the convex ring (514) protrudes out of the periphery of the voice coil cylinder (51), a flange (512) is arranged at the lower end of the voice coil cylinder (51), the outer edge of the flange (512) protrudes out of the periphery of the voice coil cylinder (51), a coil (52) of the voice coil (5) is located between the convex ring (514) and the flange (512), and the outer diameter D of the convex ring (514) and the outer diameter e of the flange (512) are both smaller than the outer diameter D of the coil (52); the side wall of the voice coil cylinder (51) is provided with a plurality of strip-shaped through holes (511), the strip-shaped through holes (511) positioned at the same axial position are uniformly distributed along the circumferential direction of the voice coil cylinder (51), and the length direction of the strip-shaped through holes (511) is axially parallel to the voice coil cylinder (51); be equipped with on the cone mounting surface on basin frame (1) and connect bulge loop (8), should connect bulge loop (8) and become cyclic annular and set up on the cone mounting surface be equipped with on the mounting surface of pad limit (7) and connect corresponding connection annular (71) of bulge loop (8), this connection annular (71) with connect bulge loop (8) looks lock joint be equipped with clearance t between the tank bottom of connection annular (71) and connection bulge loop (8) top surface, this clearance t is 0.2 ~ 0.6 millimeter.

2. The speaker with good sound reduction performance as claimed in claim 1, wherein: the cross section of the connecting convex ring (8) is in a dovetail shape or a rectangle shape, and the cross section of the connecting ring groove (71) is in a dovetail shape or a rectangle shape corresponding to the cross section of the connecting convex ring (8).

3. The speaker with good sound reproduction performance as claimed in claim 1 or 2, wherein: the gap t between the groove bottom of the connecting ring groove (71) and the top surface of the connecting convex ring (8) is 0.3-0.4 mm.

4. The speaker with good sound reduction performance as claimed in claim 1, wherein: the flanges (513) are a plurality of protruding pieces (5131) arranged on the periphery of the voice coil cylinder (51), and the protruding pieces (5131) are uniformly distributed on the cross section of the voice coil cylinder (51) along the circumferential direction.

5. The speaker with good sound reduction performance as claimed in claim 4, wherein: the root of the lug (5131) is connected with the voice coil cylinder (51) into a whole, the lug (5131) is a sheet-shaped body formed by outwards turning a cut part of a U-shaped cut which is formed on the side wall of the voice coil cylinder (51), and the strip-shaped through hole (511) is a through hole formed by outwards turning the cut part.

6. The speaker with good sound reduction performance as claimed in claim 5, wherein: the protruding length a of the protruding piece (5131) is less than or equal to the length b of the strip-shaped through hole (511).

7. The speaker with good sound reduction performance as claimed in claim 1, wherein: the section of the convex ring (514) on the axial section of the voice coil cylinder (51) is V-shaped or circular arc-shaped.

8. The speaker with good sound reduction performance as claimed in claim 1, wherein: the cross section of the flanging (512) on the axial section of the voice coil cylinder body (51) is arc-shaped.

9. The speaker with good sound reduction performance as claimed in claim 1, wherein: the folded edge (6) and the cushion edge (7) are connected into a whole.

10. The speaker with good sound reduction performance as claimed in claim 1, wherein: the voice coil cylinder (51) is an aluminum cylinder.