CN210298073U - High-quality long-life loudspeaker - Google Patents

Abstract

The utility model discloses a high-quality long-life loudspeaker, which comprises a basin frame, a cone, a voice coil, an elastic wave, a magnet and a U-shaped iron, wherein a connecting convex ring is arranged on the cone mounting surface of the basin frame, and a connecting ring groove which is buckled with the connecting convex ring is arranged on the cushion edge mounting surface at the periphery of the cone; the voice coil barrel of the voice coil is provided with an upper retaining edge and a lower retaining edge, the inner periphery of the elastic wave is clamped between the two retaining edges in the middle, and the inner periphery of the paper cone is placed on the upper retaining edge; the lower end of the voice coil barrel is provided with a flange, and a coil of the voice coil is positioned between the flange and a lower flange; a plurality of strip-shaped through holes are formed in the wall of the voice coil cylinder; the periphery of the U-shaped iron is sleeved with a heat dissipation sleeve, and the periphery of the heat dissipation sleeve is provided with heat dissipation fins. Adopt the utility model discloses a reliable connection between high-quality long-life speaker can not only guarantee the cone pad limit and the basin frame, can also guarantee firm in connection between voice coil loudspeaker voice coil, cone and the bullet ripples to coil position is stable in the voice coil loudspeaker voice coil, the radiating effect is good.

Description

High-quality long-life loudspeaker

Technical Field

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

Background

The moving-coil loudspeaker is an electroacoustic transducer applying electric principle, and is generally composed of three major parts of magnetic circuit system, vibration system and supporting auxiliary system, in which the vibration system and magnetic circuit system are supported, wherein the inner periphery of a cone in the vibration system is sleeved on a voice coil barrel in the voice coil and is connected with the voice coil barrel through gluing, the cone is connected with a cone frame in the support auxiliary system through the outer periphery folded edge and the cushion edge through gluing, the voice coil barrel in the voice coil is inserted in the elastic wave inner hole in the support auxiliary system and is connected with the elastic wave inner hole in the support auxiliary system in an adhesive mode, the coil part in the voice coil is movably inserted in a magnetic gap in the magnetic loop system, when the voice current signal is led into the coil in the voice coil, an electromotive force is generated under the action of the magnetic loop system, the electromotive force pushes the voice coil to vibrate and drives the cone to vibrate, thereby producing a sound corresponding to the sound current signal.

In the working process of the loudspeaker, the cone which is connected to the cone frame through the peripheral folded edge through the pad edge in an adhesive manner must be closely and firmly connected with the whole area of the cone frame, the cone is guaranteed not to fall off when the cone produces sound and vibration, even if parts of the cone are not firmly bonded and connection gaps are produced, the cone can also produce abnormal vibration, and sound distortion is caused.

The cone inner ring is bonded with the voice coil barrel of the voice coil, the voice coil is driven by the voice coil to vibrate and sound, 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, the voice coil is supported by the elastic waves to ensure that the voice coil can flexibly run along the axial direction, the reliable connection between the voice coil and the cone inner ring and between the voice coil and the elastic wave inner ring is a basic condition for ensuring that the voice coil flexibly runs along the axial direction and drives the cone to normally sound, in the long-term running process of the loudspeaker, the working state of overload running cannot occur, for example, a power amplifier suddenly outputs a very large instant energy which can be formed by suddenly opening the sound, at the moment, the input current of the loudspeaker is suddenly increased to enable the voice coil to generate an abnormal electrodynamic force corresponding to the suddenly increased input sound current signals in a magnetic circuit system, and the loudspeaker can strongly, the abnormal acting force can be generated at the joints between the voice coil and the cone inner ring and between the voice coil and the damper inner ring, so that the connection between the voice coil and the cone inner ring and between the voice coil and the damper inner ring is damaged, the existing loudspeaker voice coil and the cone inner ring and between the voice coil and the damper inner ring are completely connected by the adhesive, when the 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 generated, 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 can not normally drive the cone to vibrate, the supporting and centering effect of the damper on the voice coil can be weakened, the voice coil can not be ensured to flexibly operate along the axial direction, and the adhesive can be rapidly gradually and completely peeled off to lose the connection effect, thereby causing the damage of the loudspeaker.

After a voice current signal is introduced into a coil in a voice coil in a magnetic loop system, on one hand, an electrodynamic force is generated to push the voice coil to vibrate and drive a cone to vibrate, and simultaneously, a large amount of heat is generated to heat the coil, under a normal working state, the temperature of the coil of the loudspeaker is higher, if the temperature of the coil is increased under the condition of long-time working or overload working, the performance of the loudspeaker is greatly influenced, on the other hand, the coil is fixedly connected with a voice coil barrel body by an adhesive in a sleeved mode, the connection performance of the adhesive is influenced after the temperature is too high, the coil and the body of the voice coil are loosened or position offset, normal driving of the cone cannot be guaranteed, sound abnormality is caused, and after the too high temperature in the coil is transmitted to the cone, the vibration performance of the cone is also influenced, so that the sound of the loudspeaker is distorted, it is even possible to burn the coil completely.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high-quality long-life speaker is provided to the aforesaid that exists to prior art is not enough, the utility model aims to solve the technical problem that a reliable connection can not only be guaranteed between cone pad limit and the basin frame, firm in connection between can also guaranteeing voice coil loudspeaker voice coil, cone and the bullet ripples to coil position is stable in the voice coil loudspeaker voice coil, the radiating effect is good.

In order to solve the technical problem, the utility model discloses a high-quality long-life speaker, including basin frame, cone, voice coil loudspeaker voice coil, bullet ripples, magnet and U-shaped iron, 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 edge, be equipped with the connection bulge loop on the cone installation face on the basin frame, this connection bulge loop is set up on the cone installation face in a ring form, be equipped with the connection annular groove corresponding with the connection bulge loop on the installation face of bed edge, this connection annular groove is buckled with the connection bulge loop; four flanges are axially arranged on the voice coil barrel of the voice coil, 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 in the middle, and the lower edge of the inner periphery of the paper cone is placed on the flange above the paper cone; 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, a coil of the voice coil is positioned between the flange and a lower flange, the outer end of the lower flange is positioned within the outer diameter of the coil, and the outer diameter D of the flange is 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 outer circumference of the U-shaped iron is sleeved with a heat dissipation sleeve, the heat dissipation sleeve comprises a heat dissipation sleeve body, and the periphery of the heat dissipation sleeve body is provided with heat dissipation fins.

In the structure, 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 connect the corresponding connection annular of bulge loop, should connect annular and connect bulge loop looks lock joint, then the pad limit that is used for connecting cone and basin frame no longer only relies on the adhesive on the double-phase relative connection plane to come erection joint, but passes through adhesive fixed connection through the connection annular that sets up and the mutual lock joint back of connection bulge loop to avoided because the coating inequality that the adhesive probably exists is equipped with or the cone that the difference of adhesive composition performance caused is connected insecure, the possibility of coming unstuck with the basin frame, guaranteed the reliable connection between cone pad limit and the basin frame.

Because the voice coil barrel of the voice coil is provided with four 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 middle part, the lower edge of the inner periphery of the cone is placed on the flange at the upper part, 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 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 vibration of the cone is not transmitted by the bonding force of the adhesive, and is also transmitted by the flanges and the dustproof cap, so even if the power amplifier suddenly opens up to output a very large instant energy to enable the loudspeaker to generate abnormal acting force under the overload operation condition of strong vibration, the phenomenon of adhesive degumming and peeling at the weak point of adhesive connection is difficult to occur; similarly, the elastic wave inner ring clamped between the two flanges in the middle 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 at the joint can be avoided, so that overload impact can be endured between the voice coil and the paper cone and between the voice coil and the elastic wave.

Still because the lower extreme of voice coil loudspeaker voice coil barrel is equipped with the turn-ups, and this turn-ups's outer fringe is along protrusion in voice coil loudspeaker voice coil barrel periphery, the coil of voice coil loudspeaker voice coil is located between turn-ups and the flange of below, and the outer end of this below flange is located within the coil external diameter, and turn-ups's external diameter D is less than the external diameter D of coil, and then coil in the voice coil loudspeaker voice coil will obtain reliable location between below flange and the turn-ups and be connected, can no longer lead to the adhesive bonding property to reduce or the phenomenon that coil and voice coil loudspeaker voice coil barrel become flexible and shift appears because overload operation produces unusual effort because the voice coil loudspeaker voice coil high temperature to.

And then because a plurality of strip-shaped through holes are arranged on the side wall of the voice coil barrel body, the strip-shaped through holes positioned on the same axial position are uniformly distributed along the circumferential direction of the voice coil barrel body, the length direction of the strip-shaped through holes is parallel to the axial direction of the voice coil barrel body, the strip-shaped through holes can lighten the weight of the voice coil, the operation flexibility of the voice coil is improved, the electro-acoustic conversion effect is improved, the heat dissipation of the voice coil can be facilitated, and the working stability of the.

In addition, the heat dissipation sleeve is sleeved on the outer circumference of the U-shaped iron and comprises a heat dissipation sleeve body, the heat dissipation sleeve body is provided with heat dissipation fins on the outer circumference of the heat dissipation sleeve body, the heat dissipation sleeve is located on the outer circumference of the U-shaped iron outside the magnetic gap, heat in the magnetic gap serving as the voice coil heat dissipation channel is transferred to the U-shaped iron and then can be better conducted and dissipated outwards through the heat dissipation sleeve, and the heat dissipation fins on the outer circumference of the heat dissipation sleeve body increase the heat dissipation area of the heat dissipation sleeve, so that the heat dissipation effect is better.

In conclusion, the loudspeaker has higher quality and longer service life by adopting the technical scheme.

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 preferred embodiment be equipped with clearance t between the tank bottom of connecting the annular and the connection bulge loop top surface. By adopting the embodiment, 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 the gap t between the tank bottom of the connecting ring groove and the top surface of the connecting convex ring can also contain corresponding adhesive, so that the bonding effect is ensured.

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.

The present invention provides a further preferred embodiment, wherein the cross-sectional shape of the flange on the axial cross-section of the voice coil cylinder is circular arc. 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 and the cushion edge are connected to form a whole. 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 is light in weight and high in mechanical strength, and can be conveniently processed, intercepted and turned outwards to form the protruding sheet and the turned edge and form the strip-shaped through hole.

In a further preferred embodiment of the present invention, the heat dissipating sleeve is a cast aluminum member, the heat dissipating sleeve body is cast with the heat dissipating fins as a whole, the heat dissipating fins are in a circular ring shape, the heat dissipating fins are axially distributed along the heat dissipating sleeve body, a ratio n of a thickness n of a top of the heat dissipating fin to a thickness m of a root of the heat dissipating fin is 0.5 to 0.8, and a ratio m of a thickness m of a root of the heat dissipating fin to a distance T between roots of adjacent heat dissipating fins is 0.2 to 1. By adopting the embodiment, the heat conductivity coefficient of the aluminum component is high, the heat dissipation sleeve of the cast aluminum component dissipates heat quickly and is convenient for the heat dissipation sleeve body to be connected with the heat dissipation fins into a whole, the ratio n of the thickness n of the top of each heat dissipation fin to the thickness m of the root of each heat dissipation fin is 0.5-0.8, so that the thickness of the top of each heat dissipation fin is smaller than that of the root of each heat dissipation fin, the heat dissipation area can be increased, the casting forming is facilitated, the ratio m of the thickness m of the root of each heat dissipation fin to the distance T between the roots of adjacent heat dissipation fins is 0.2-1, a larger gap is formed between the adjacent heat dissipation.

Drawings

The high-quality long-life speaker of 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 high-quality long-life speaker 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 A-A of FIG. 2;

FIG. 4 is a schematic view of the structure of the heat dissipation sleeve of the structure of FIG. 1;

fig. 5 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-U-shaped iron, 5-voice coil, 51-voice coil barrel, 511-strip-shaped through hole, 512-flanging, 513-flange, 5131-lug, 52-coil, 6-magnet, 7-heat dissipation sleeve, 71-heat dissipation fin, 72-heat dissipation sleeve body, 8-flanging, 9-pad edge, 91-connecting ring groove and 10-connecting convex ring.

Detailed Description

In the high-quality long-life loudspeaker shown in fig. 1, a cone 2, a voice coil 5, an elastic wave 3 and a U-shaped iron 4 are all supported on a cone frame 1, a magnet 6 is arranged in the U-shaped iron 4 to form a magnetic loop system, a folded edge 8 is arranged on the periphery of the cone 2, the folded edge 8 is connected with a cone mounting surface on the cone frame 1 through a cushion edge 9 connected with the folded edge 8 into a whole, referring to fig. 5, a connecting convex ring 10 is arranged on the cone mounting surface on the cone frame 1, the connecting convex ring 10 is annularly arranged on the cone mounting surface, the cross section of the connecting convex ring 10 is in a dovetail shape, a connecting ring groove 91 corresponding to the connecting convex ring 10 is arranged on the mounting surface of the cushion edge 9, the cross section of the connecting ring groove 91 is in a dovetail shape corresponding to the cross section of the connecting convex ring 10, the connecting ring groove 91 is buckled with the connecting convex ring 10 and is bonded through an adhesive, a gap t is arranged between the bottom of the, namely, the depth of the connecting ring groove 91 is greater than the height of the connecting convex ring 10, so that the mounting bottom surface of the pad edge 9 can be bonded with the paper basin mounting surface on the basin frame 1.

Four ribs 513 are axially arranged on the voice coil cylinder 51 of the voice coil 5, the ribs 513 protrude out of the 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 periphery of the voice coil cylinder 51, that is, the ribs 513 are composed of a plurality of protruding pieces 5131 arranged on the 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, and the protruding pieces 5131 are sheet-shaped bodies formed by outwards turning a part cut out by a U-shaped notch arranged on the side wall of the voice coil cylinder 51; the inner periphery of the damper 3 is clamped between the two flanges 513 at the middle and is bonded through an adhesive, the lower edge of the inner periphery of the cone 2 is placed on the upper flange 513, a dust cover arranged at the top end of the voice coil 5 is arranged above the inner periphery of the cone 2, and the inner ring of the cone 2 is positioned between the dust cover and the upper flange 513 and is bonded with the voice coil cylinder 51 through the adhesive; a flange 512 is arranged at the lower end of the voice coil cylinder 51, the cross section of the flange 512 on the axial section of the voice coil cylinder 51 is arc-shaped, the outer edge of the flange 512 protrudes out of the periphery of the voice coil cylinder 51, the coil 52 of the voice coil 5 is positioned between the flange 512 and a lower flange 513, the installation position is limited by the flange 513 and the flange 512 and is fixedly connected through an adhesive, the outer end of the lower flange 513 is positioned within the outer diameter of the coil 52, and the outer diameter D of the flange 512 is 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, 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 between the voice coil barrel 51 and the coil 52, the damper 3, the cone 2 and the basin frame 1.

The heat dissipation sleeve 7 is press-fit and sleeved on the outer circumference of the U-shaped iron 4, the structure of the heat dissipation sleeve 7 is shown in FIG. 4, the structure of the heat dissipation sleeve 7 comprises a circular sleeve-shaped heat dissipation sleeve body 72, heat dissipation fins 71 in a circular ring sheet shape are arranged on the outer circumference of the heat dissipation sleeve body 72, the heat dissipation fins 71 are axially distributed along the heat dissipation sleeve body 72, the ratio n: m between the thickness n of the tops of the heat dissipation fins 71 and the thickness m of the roots is 0.5-0.8, and the ratio m: T between the thickness m of the roots of the heat dissipation fins 71 and the distance T between the roots of the adjacent heat dissipation fins 71 is 0.2-1.

The heat dissipation sleeve 7 is a cast aluminum component, and is formed by casting or die-casting aluminum alloy, and the heat dissipation sleeve body 72 and the heat dissipation fins 71 are cast into a whole.

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 connection convex ring 10 may not be dovetail-shaped, but may be rectangular, and correspondingly, the cross section of the connection ring groove 91 may also be rectangular corresponding to the cross section of the connection convex ring 10; 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-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 (10)

1. The utility model provides a high-quality long-life speaker, includes basin frame (1), cone (2), voice coil loudspeaker voice coil (5), bullet ripples (3), magnet (6) and U type iron (4), is equipped with hem (8) in cone (2) periphery, and hem (8) are connected its characterized in that through filling up limit (9) and the cone installation face on basin frame (1): a connecting convex ring (10) is arranged on the paper basin mounting surface on the basin frame (1), the connecting convex ring (10) is annularly arranged on the paper basin mounting surface, a connecting ring groove (91) corresponding to the connecting convex ring (10) is arranged on the mounting surface of the pad edge (9), and the connecting ring groove (91) is buckled with the connecting convex ring (10); four 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) in the middle, and the lower edge of the inner periphery of the cone (2) is placed on the flange (513) above; 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), the coil (52) of the voice coil (5) is positioned between the flange (512) and a lower flange (513), the outer end of the lower flange (513) is positioned within the outer diameter of the coil (52), and the outer diameter D of the flange (512) is 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); the outer circumference of the U-shaped iron (4) is sleeved with a heat dissipation sleeve (7), the heat dissipation sleeve (7) comprises a heat dissipation sleeve body (72), and heat dissipation fins (71) are arranged on the periphery of the heat dissipation sleeve body (72).

2. A high quality long life loudspeaker as claimed in claim 1, wherein: the cross section of the connecting convex ring (10) is in a dovetail shape or a rectangle shape, and the cross section of the connecting ring groove (91) is in a dovetail shape or a rectangle shape corresponding to the cross section of the connecting convex ring (10).

3. A high-quality long-life speaker as claimed in claim 1 or 2, wherein: and a gap t is arranged between the groove bottom of the connecting ring groove (91) and the top surface of the connecting convex ring (10).

4. A high quality long life loudspeaker 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. A high quality long life loudspeaker according to 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. A high quality long life loudspeaker according to 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. A high quality long life loudspeaker 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.

8. A high quality long life loudspeaker as claimed in claim 1, wherein: the folded edge (8) and the cushion edge (9) are connected into a whole.

9. A high quality long life loudspeaker as claimed in claim 1, wherein: the voice coil cylinder (51) is an aluminum cylinder.

10. A high quality long life loudspeaker as claimed in claim 1, wherein: the heat dissipation sleeve (7) is a cast aluminum component, the heat dissipation sleeve body (72) and the heat dissipation fins (71) are cast into a whole, the heat dissipation fins (71) are in a circular ring shape, the heat dissipation fins (71) are axially distributed along the heat dissipation sleeve body (72), the ratio n to m of the thickness n of the top of each heat dissipation fin (71) to the thickness m of the root of each heat dissipation fin is 0.5-0.8, and the ratio m to T of the thickness m of the root of each heat dissipation fin (71) to the distance T between the roots of adjacent heat dissipation fins (71) is 0.2-1.

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