CN213906845U

CN213906845U - Loudspeaker box

Info

Publication number: CN213906845U
Application number: CN202023088543.3U
Authority: CN
Inventors: 任璋; 钟志威; 宋威
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-08-06
Anticipated expiration: 2030-12-18
Also published as: WO2022126780A1

Abstract

The utility model provides a loudspeaker box, which comprises a front cover, a rear cover assembled with the front cover to form a containing cavity, a sounding monomer and a ventilating isolation cover, wherein the sounding monomer and the ventilating isolation cover are arranged in the containing cavity, the front cover is provided with a bottom wall and a supporting wall, the ventilating isolation cover separates the sounding monomer from the rear cavity, the sounding monomer comprises a basin frame, a vibration system and a magnetic circuit system which are respectively fixed on the basin frame, and an elastic support piece, the elastic support piece comprises an auxiliary vibrating diaphragm, the auxiliary vibrating diaphragm comprises a first fixing part connected with the basin frame, a second fixing part connected with the vibration system, and a folding ring part connected with the first fixing part and the second fixing part, the folding ring part is protruded towards the ventilating isolation cover, the ventilating isolation cover comprises a cover body attached to the magnetic circuit system, a gluing part fixed on the supporting wall, and a subsidence part connecting the cover body and the gluing part, the cover body is closer to the rear cover relative to the subsidence part, the orthographic projection of the folding ring part on the ventilating isolation cover is positioned in the range of the subsidence part, and when the auxiliary vibrating diaphragm vibrates, the folded ring part does not collide with the collapse part.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to an apply to speaker box of portable electronic product.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of a mobile phone are very diverse, one of which is a high-quality music function, and thus, a speaker box for playing sound is widely applied to the current smart mobile devices.

The loudspeaker box comprises a shell body with a containing cavity and a sound production single body which is contained in the shell body and divides the containing cavity into a front cavity and a rear cavity, and the sound production single body comprises an auxiliary vibrating diaphragm. The full-filling structure of the loudspeaker box in the related art meets the requirement of powder filling by means of a ventilating isolation cover (the ventilating isolation cover is a three-dimensional net or a metal net) covering the area around the sounding monomer to separate the sounding monomer from the powder application space. However, such a speaker box cannot be powdered by utilizing the outer shape space over which the vibration of the auxiliary diaphragm overflows.

Therefore, there is a need to provide a new speaker box to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a loudspeaker box, this loudspeaker box can improve and irritate the powder space.

In order to achieve the above object, the present invention provides a speaker box, comprising a front cover, a rear cover assembled with the front cover to form a containing cavity, a sounding monomer and a ventilating isolation cover, wherein the sounding monomer and the ventilating isolation cover are disposed in the containing cavity, the sounding monomer separates the containing cavity into a front cavity and a rear cavity, the front cover has a bottom wall and a supporting wall extending from the bottom wall to form and surround the sounding monomer, the sounding monomer is fixed on the supporting wall, the ventilating isolation cover separates the sounding monomer from the rear cavity, the sounding monomer comprises a basin frame, a vibration system and a magnetic circuit system which are respectively fixed on the basin frame, and an elastic support member, the elastic support member comprises an auxiliary vibrating diaphragm, the auxiliary vibrating diaphragm comprises a first fixing part connected with the basin frame, a second fixing part connected with the vibration system, and a ring folding part connected with the first fixing part and the second fixing part, the folded ring part is protruded towards the direction of the breathable isolation cover, the breathable isolation cover comprises a cover body attached to the magnetic circuit system, a gluing part fixed on the support wall and a collapsing part connected with the cover body and the gluing part, the cover body is closer to the rear cover relative to the collapsing part, the orthographic projection of the folded ring part on the breathable isolation cover is located in the range of the collapsing part, and the folded ring part does not collide with the collapsing part when the auxiliary diaphragm vibrates.

Preferably, the folded ring portion has a connecting line farthest from the bottom wall, the folded ring portion includes a first portion extending from the connecting line to the first fixing portion and a second portion extending from the connecting line to the second fixing portion, the collapsed portion includes a flat portion formed by bending and extending from the cover body and an arc portion extending from the flat portion to the gluing portion, the flat portion is perpendicular to the vibration direction of the diaphragm, and the shape of the arc portion matches the shape of the first portion.

Preferably, the vibration system includes the holding in the basin frame and with the diapire encloses to close and forms the vibrating diaphragm and the drive of ante-chamber the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production, the vibrating diaphragm orientation one side of voice coil loudspeaker voice coil is connected with the skeleton, the voice coil loudspeaker voice coil with the second fixed part respectively with the skeleton is connected.

Preferably, the skeleton is including being fixed in the skeleton main part of vibrating diaphragm, certainly the outer peripheral edges of skeleton main part are to keeping away from the first connecting portion that the vibrating diaphragm direction extends the formation and certainly the inner peripheral edges of skeleton main part are to keeping away from the second connecting portion that the vibrating diaphragm direction extends the formation, the second fixed part with first connecting portion are connected, the voice coil loudspeaker voice coil connect in the second connecting portion.

Preferably, the elastic support member further comprises a flexible circuit board electrically connected with the voice coil, the flexible circuit board comprises a fixing portion fixed on the basin frame, a combining portion fixed on the first connecting portion and an elastic arm connected with the fixing portion and the combining portion, the first fixing portion is fixed on one side of the basin frame far away from the fixing portion, and the second fixing portion is fixed on one side of the first connecting portion far away from the combining portion.

Preferably, a pad extending from the holding part and parallel to the bottom wall and extending into the rear cavity is formed, the supporting wall is provided with a gap avoiding the bonding pad, the front cover is also provided with a boss extending from the bottom wall to the rear cavity, the loudspeaker box also comprises a soldering lug, the soldering lug comprises a main body part fixed on the bottom wall in an injection molding mode, a first electric connection part extending out of the accommodating cavity from the main body part and fixed on the bottom wall in an injection molding mode, an extension part formed by bending and extending the main body part and injected into the boss, and a second electric connection part formed by bending and extending the extension part and fixed on the boss in an injection molding mode, the first electric connection part is electrically connected with an external circuit, the second electric connection part is exposed on one side, away from the bottom wall, of the boss, and the pad is arranged on the second electric connection part and is electrically connected with the second electric connection part.

Preferably, the front cover comprises a plastic part and a reinforced rigid body fixed on the plastic part in an injection molding manner, the supporting wall is located on the plastic part, and the soldering lug is fixed on the plastic part in an injection molding manner.

Preferably, strengthen the rigid body and include the body and certainly the body extends to a plurality of walls that form in the working of plastics, the wall encloses to close and forms the toper through-hole, the toper through-hole by the plastics of working of plastics are filled, the toper through-hole includes first opening and second opening, first opening with the second opening is located respectively the both ends of toper through-hole, the second opening for first opening is closer to hold the chamber, the size of toper through-hole is followed first opening extremely the second open-ended direction reduces gradually.

Preferably, the reinforcing rigid body is made of a metal material, and the surrounding wall is formed by stamping the body.

Preferably, a powder filling hole is formed in the position, opposite to the rear cavity, of the front cover or/and the rear cover, and a sealing cover covers the powder filling hole.

Compared with the prior art, the utility model discloses a loudspeaker box sets up including laminating in magnetic circuit's cover body, being fixed in the veneer portion and connecting on the support wall through ventilative cage cover body, wherein, the cover body for the portion of collapsing is closer to the back lid, ring portion is in orthographic projection on the ventilative cage cover is located the within range of the portion of collapsing, just during supplementary vibrating diaphragm vibration, ring portion not with the portion of collapsing collides. Therefore, the powder filling area can be maximized by utilizing the shape space overflowed by the vibration of the auxiliary diaphragm.

[ 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 an exploded view of a preferred embodiment of the speaker box of the present invention;

FIG. 2 is an exploded view of a front cover in the loudspeaker enclosure of FIG. 1;

fig. 3 is an exploded view of a sound generating unit in the loudspeaker enclosure of fig. 1;

fig. 4 is a schematic structural diagram of a flexible circuit board in the sound generating unit shown in fig. 3;

fig. 5 is a schematic structural view of an auxiliary diaphragm in the sounding unit shown in fig. 3;

FIG. 6 is a schematic structural diagram of the skeleton of the sounding unit shown in FIG. 3;

FIG. 7 is a schematic view of the construction of the air permeable enclosure of the loudspeaker enclosure of FIG. 1;

FIG. 8 is a schematic view of the structure of a solder pad in the loudspeaker enclosure of FIG. 1;

FIG. 9 is a schematic view of the assembled front cover and soldering lug of the speaker box of FIG. 1;

FIG. 10 is an assembled schematic view of the speaker cabinet of FIG. 1;

FIG. 11 is a cross-sectional view of the speaker cabinet of FIG. 10 taken along the direction A-A;

fig. 12 is an enlarged view of a portion a of the speaker box shown in fig. 11;

fig. 13 is a sectional view of the loudspeaker enclosure of fig. 10 in the direction B-B.

[ 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 to 13, the speaker box includes a front cover 1, a rear cover 2 assembled with the front cover 1 to form an accommodating cavity 10, and a sound generating unit 3 and a breathable shielding case 4 disposed in the accommodating cavity 10, wherein the sound generating unit 3 divides the accommodating cavity 10 into a front cavity 10A and a rear cavity 10B.

The front cover 1 is provided with a bottom wall 1A and a supporting wall 1B which is formed by extending the bottom wall 1A and surrounds the sounding single body 3, and the sounding single body 3 is fixed on the supporting wall 1B. The front cover 1 is further provided with a sound guide channel 10C communicated with the outside and the front cavity 10A, and sound emitted by the sound generating monomer 3 sequentially passes through the front cavity 10A and the sound guide channel 10C and is transmitted to the outside.

The sounding unit 3 comprises a basin frame 5, a vibration system 6 and a magnetic circuit system 7 respectively fixed on the basin frame 5, and an elastic support 8.

The vibration system 6 comprises a diaphragm 61 fixed on the frame 5 and enclosing with the bottom wall 1A to form the front cavity 10A, and a voice coil 63 driving the diaphragm 61 to vibrate and sound.

The vibrating diaphragm 61 is towards one side of voice coil 63 is connected with skeleton 65, voice coil 63 with skeleton 65 is connected, the one end of elastic support element 8 is fixed in basin frame 5, and its other end is fixed in skeleton 65. After the voice coil 63 is energized, the voice coil 63 vibrates under the action of the magnetic field of the magnetic circuit system 7, and at the same time, the voice coil 63 drives the diaphragm 61, the bobbin 65 and the elastic support member 8 to vibrate together.

The bobbin 65 includes a bobbin main body 651 fixed to the diaphragm 61, a first connection portion 653 formed by extending from an outer peripheral edge of the bobbin main body 651 in a direction away from the diaphragm 61, and a second connection portion 655 formed by extending from an inner peripheral edge of the bobbin main body 651 in a direction away from the diaphragm 63, the elastic support member 8 is connected to the first connection portion 653, and the voice coil 63 is connected to the second connection portion 655.

The magnetic circuit system 7 comprises a yoke 71, a main magnet 73 and a secondary magnet 75 fixed on the yoke 71, a pole core 77 covering the main magnet 73, and an upper clamp plate 79 covering the secondary magnet 75, wherein the secondary magnet 75 is arranged around the main magnet 73 and forms a magnetic gap 7A with the main magnet 73, the upper clamp plate 79 is fixed on the basin frame 5 to realize that the magnetic circuit system 7 is fixed on the basin frame 5, and the voice coil 63 is inserted into the magnetic gap 7A, so that the voice coil 63 can vibrate under the action of the magnetic field of the magnetic circuit system 7 after the voice coil 63 is electrified.

In the present embodiment, the upper clamping plate 79 and the pole piece 77 are both made of a magnetically conductive material, so that the magnetic flux in the magnetic gap 7A can be enhanced.

The elastic support member 8 includes a flexible circuit board 81, a symmetric plate 82, and an auxiliary diaphragm 83.

The flexible circuit board 81 and the symmetrical board 82 each include a holding portion 811 fixed to the tub frame 5, a coupling portion 813 fixed to the first connecting portion 653, and an elastic arm 815 connecting the holding portion 811 and the coupling portion 813.

In order to ensure the balance of the elastic supporting force of the symmetric plate 82 and the flexible circuit board 81 to the skeleton 65, the holding portion 811, the combining portion 813, and the elastic arm 815 of the flexible circuit board 81 and the symmetric plate 82 have the same shape and configuration, and also have the same damping. In this embodiment, the symmetric plate 82 may be made of a substrate material of a flexible circuit board, such as a polyimide or mylar substrate, or may be a non-conductive plate made of other materials.

On one hand, the flexible circuit board 81 plays a role of supporting and fixing the framework 65, and on the other hand, the flexible circuit board 81 is also used for connecting the voice coil 63 with an external circuit.

As shown in the figure, an extension portion 816 and a pad portion 817 are sequentially formed by extending from the combining portion 813 of the flexible circuit board 81, a pad 819 is formed by extending from the holding portion 811 of the flexible circuit board 81, the pad 819 is parallel to the bottom wall 1A and extends into the rear cavity 10B, and a notch 1C which avoids the pad 819 is formed on the supporting wall 1B. Conductive paths are formed in the holding portion 811, the combining portion 813, the elastic arm 815 and the extending portion 816 of the flexible circuit board 81 to electrically connect the pad 819 and the pad 817, the lead connection between the pad 817 and the voice coil 63 serves to electrically connect the voice coil 63, the pad 819 is connected to an external circuit, so that the voice coil 63 is electrically connected to the external circuit through the flexible circuit board 81, and when the sound generating device is operated, an electrical signal of the external circuit is transmitted to the voice coil 63 through the flexible circuit board 81.

The front cover 1 further has a boss 1D formed to extend from the bottom wall 1A into the rear cavity 10B.

The speaker box still includes soldering lug 9, soldering lug 9 is fixed in including moulding plastics diapire 1A's main part 91, certainly main part 91 extends to hold the chamber 10 outer and mould plastics and be fixed in diapire 1A's first electric connection portion 93, certainly main part 91 is buckled to extend and is formed and mould plastics in extension 95 in the boss 1D and certainly extension 95 is buckled to extend and is formed and mould plastics and be fixed in boss 1D's second electric connection portion 97, wherein, first electric connection portion 93 is connected with external circuit electricity, wherein, second electric connection portion 97 is in boss 1D is kept away from diapire 1A one side exposes, pad 819 is located on the second electric connection portion 97 and with second electric connection portion 97 is connected in order to realize flexible circuit board 81 is connected with the external circuit electricity. Through inciting somebody to action soldering lug 9 set to with 1 injection moulding of protecgulum, not only avoided the soldering lug to occupy rear chamber 10B's space to be favorable to improving irritate the powder space in the rear chamber 10B, reduced the assembly complexity of speaker box moreover, also avoided using to mould plastics even shelves and guarantee linking the shelves that the relative position of pad leads to and mould plastics the problem of breaking off with the fingers and thumb of back basin frame.

As shown in fig. 9, the pad 819 is far from the outer contour of the product (the soldering lug 9 has a long length), and the relative positions of the first electrical connection portion 93 and the second electrical connection portion 97 of the soldering lug 9 in the injection mold cannot be guaranteed by the strength of the soldering lug 9 itself. In this embodiment, the main body 91 is provided with a positioning hole 911. By providing the positioning hole 911 in the main body portion 91, the relative positions of the first electrical connection portion 93 and the second electrical connection portion 97 in the injection mold can be ensured.

In the present embodiment, a surface of the second electrical connection portion 97 on a side away from the extension portion 95 and a surface of the boss 1D on a side away from the bottom wall 1A are coplanar.

As shown in fig. 1 and 9, two bonding pads 819 and two soldering lugs 9 are provided, the two bonding pads are respectively a positive bonding pad and a negative bonding pad and are located on the same side of the sound generating unit 3, and the two soldering lugs 9 are respectively a positive soldering lug and a negative soldering lug. It will be appreciated that in other embodiments, ground pads and ground tabs may also be provided.

In this embodiment, the front cover 1 includes a plastic part 11 and a reinforcing rigid body 13 fixed to the plastic part 11 by injection molding, the supporting wall 1B is located on the plastic part 11, and the soldering lug 9 is fixed to the plastic part 11 by injection molding. That is to say, at least a part of the plastic part 11 is located on the bottom wall 1A so that the main body part 91 and the first electrical connection part 93 can be injection-molded and fixed to the bottom wall 1A, at least a part of the plastic part 11 also constitutes the boss 1D so that the extension part 95 and the second electrical connection part 97 can be injection-molded and fixed to the boss 1D. Under the condition that the loudspeaker box has the same volume, the front cover 1 is provided with a plastic part 11 and a reinforced rigid body 13 which is fixed on the plastic part 11 in an injection molding mode, so that the wall thickness of the front cover 1 is favorably reduced, and the powder filling space of the loudspeaker box is favorably increased.

Wherein, the sound guide channel 10C is formed on the plastic member 11.

The reinforcing rigid body 13 includes a body 131 and a plurality of surrounding walls 133 extending from the body 131 into the plastic part 11, the surrounding walls 133 surround to form a tapered through hole 135, and the tapered through hole 135 is filled with the plastic of the plastic part 11.

The tapered through hole 135 includes a first opening 137 and a second opening 138, the first opening 137 and the second opening 138 are respectively disposed at two ends of the tapered through hole 135, the second opening 138 is closer to the accommodating cavity 10 than the first opening 137, and the size of the tapered through hole 135 gradually decreases along a direction from the first opening 137 to the second opening 138. The tapered through hole 135 is configured to gradually decrease in size along the direction from the first opening 137 to the second opening 138, so that the reinforced rigid body 13 has higher connection strength after being injection-molded and fixed to the plastic member 11.

In this embodiment, the reinforcing rigid body 13 is made of a metal material, and the surrounding wall 133 is formed by press-molding the body 131. The reinforcing rigid body 13 made of a metal material is advantageous not only for reinforcing the strength of the front cover 1 but also for heat dissipation of the speaker box. Typically, the rigid reinforcing body 13 is made of a steel material.

It will be appreciated that in other embodiments the composition of the front cover 1 is not limited thereto, for example, the front cover 1 may also be provided to be made of plastic only.

The auxiliary diaphragm 83 includes a first fixing portion 831 fixed to a side of the holding portion 811 away from the frame 5, a second fixing portion 833 fixed to a side of the combining portion 813 away from the first connecting portion 653, and a corrugated portion 835 connecting the first fixing portion 831 and the second fixing portion 833. That is, the first fixing portion 831 of the auxiliary diaphragm 83 is connected to the frame 5 through the holding portion 811, the second fixing portion 833 of the auxiliary diaphragm 83 is fixed to the first connecting portion 653 through the coupling portion 813, and the second fixing portion 833 is connected to the vibration system 6 through the coupling portion 813 and the first connecting portion 653.

It is understood that, in other embodiments, the elastic supporting member may be configured to include only the auxiliary diaphragm, that is, the first fixing portion of the auxiliary diaphragm is fixed to the frame, and the second fixing portion of the auxiliary diaphragm is fixed to the first connecting portion.

Ventilative cage 4 set firmly in support wall 1B covers sound production monomer 3, so that sound production monomer 3 with back chamber 10B separates, thereby can the filling is inhaled the sound powder or is inhaled the acoustic performance of sound granule in order to improve the speaker box in back chamber 10B.

In this embodiment, a powder filling hole 20 is opened on a position of the front cover 1 and the rear cover 2 facing the rear cavity 10B, and a sealing cover 30 covers the powder filling hole 20.

It is understood that, in other embodiments, a powder filling hole 20 may be further opened on a position of the front cover 1 or the rear cover 2 facing the rear cavity 10B, and the powder filling hole 20 is covered with a sealing cover 30.

The collar portion 835 protrudes toward the air-permeable isolation cover 4. The hinge portion 835 has a connecting line 836 farthest from the bottom wall 1A, and the hinge portion 835 includes a first portion 837 extending from the connecting line 836 in a direction toward the first fixing portion 831 and a second portion 839 extending from the connecting line 836 in a direction toward the second fixing portion 833.

The air-permeable isolation cover 4 includes a cover body 41 attached to the magnetic circuit system 7, a gluing portion 43 fixed to the support wall 1B, and a collapsing portion 45 connecting the cover body 41 and the gluing portion 43, wherein the cover body 41 is closer to the rear cover 2 than the collapsing portion 45, an orthogonal projection of the collar portion 835 on the air-permeable isolation cover 4 is located within the range of the collapsing portion 45, and the collar portion 835 does not collide with the collapsing portion 45 when the auxiliary diaphragm 83 vibrates.

Generally speaking, the closer the distance between the ring-folded portion 835 and the collapsing portion 45 is when the auxiliary diaphragm 83 vibrates to the maximum position far away from the diaphragm 61, the better the powder filling area is maximized by using the overflowing shape space of the auxiliary diaphragm 83 vibration (i.e. when the electric signal input by the voice coil 63 is under the normal working condition, and the auxiliary diaphragm 83 vibrates to the maximum position far away from the diaphragm 61, the limit position is when the ring-folded portion 835 is in contact with the collapsing portion 45 but does not collide with the collapsing portion). However, in order to avoid the collision between the collar portion 835 and the collapsing portion 45 caused by the abnormal electrical signal input by the voice coil 63, when the electrical signal input by the voice coil 63 is under a normal working condition and the auxiliary diaphragm 83 vibrates to a maximum position far away from the diaphragm 61, a certain distance is usually set between the collar portion 835 and the collapsing portion 45. As shown, a dashed line a in the figure is a maximum position where the auxiliary diaphragm 83 vibrates to a position far away from the diaphragm 61 when the electric signal input by the voice coil 63 is under a normal working condition.

The collapsing portion 45 includes a flat portion 47 formed by bending and extending the cover body 41, and an arc portion 49 extending from the flat portion 47 to the gluing portion 43, the flat portion 47 is perpendicular to the vibration direction of the diaphragm 61, and the shape of the arc portion 49 matches the shape of the first portion 837.

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 loudspeaker box comprises a front cover, a rear cover assembled with the front cover to form a containing cavity, a sound production monomer and a breathable isolation cover, wherein the sound production monomer is arranged in the containing cavity and divides the containing cavity into a front cavity and a rear cavity, the front cover is provided with a bottom wall and a supporting wall extending from the bottom wall to form and surround the sound production monomer, the sound production monomer is fixedly held on the supporting wall, the breathable isolation cover divides the sound production monomer from the rear cavity, the sound production monomer comprises a basin frame, a vibration system and a magnetic circuit system which are fixedly held on the basin frame respectively and an elastic support piece, the elastic support piece comprises an auxiliary vibrating diaphragm, the auxiliary vibrating diaphragm comprises a first fixing part connected with the basin frame, a second fixing part connected with the vibration system and a ring folding part connected with the first fixing part and the second fixing part, and the ring folding part is raised towards the breathable isolation cover, the air-permeable isolation cover is characterized by comprising a cover body attached to the magnetic circuit system, a gluing part fixed on the support wall and a collapsing part connected with the cover body and the gluing part, wherein the cover body is closer to the rear cover relative to the collapsing part, the orthographic projection of the folded ring part on the air-permeable isolation cover is located in the range of the collapsing part, and the folded ring part does not collide with the collapsing part when the auxiliary diaphragm vibrates.

2. A loudspeaker enclosure according to claim 1, wherein the folded-loop portion has a connecting line furthest from the bottom wall, the folded-loop portion includes a first portion extending from the connecting line in a direction toward the first fixing portion and a second portion extending from the connecting line in a direction toward the second fixing portion, the collapsed portion includes a flat portion formed by bending and extending from the enclosure body and an arc portion extending from the flat portion to the glue portion, the flat portion is perpendicular to a vibration direction of the diaphragm, and a shape of the arc portion matches a shape of the first portion.

3. The loudspeaker box of claim 1, wherein the vibration system comprises a diaphragm fixed on the frame and enclosing with the bottom wall to form the front cavity, and a voice coil for driving the diaphragm to vibrate and generate sound, a bobbin is connected to one side of the diaphragm facing the voice coil, and the voice coil and the second fixing portion are respectively connected to the bobbin.

4. The speaker box of claim 3, wherein the frame comprises a frame body fixed on the diaphragm, a first connecting portion extending and forming from the outer periphery of the frame body to the direction far away from the diaphragm, and a second connecting portion extending and forming from the inner periphery of the frame body to the direction far away from the diaphragm, the second fixing portion is connected with the first connecting portion, and the voice coil is connected with the second connecting portion.

5. The speaker box according to claim 4, wherein the elastic supporting member further comprises a flexible circuit board electrically connected to the voice coil, the flexible circuit board comprises a holding portion fixed to the frame, a coupling portion fixed to the first connecting portion, and an elastic arm connecting the holding portion and the coupling portion, the first fixing portion is fixed to a side of the holding portion away from the frame, and the second fixing portion is fixed to a side of the coupling portion away from the first connecting portion.

6. The speaker box according to claim 5, wherein a pad is formed by extending from the fixing portion, the pad is parallel to the bottom wall and extends into the rear cavity, a notch is formed in the supporting wall to avoid the pad, the front cover further has a boss formed by extending from the bottom wall into the rear cavity, the speaker box further comprises a soldering lug, the soldering lug comprises a main body portion fixed to the bottom wall by injection molding, a first electrical connection portion extending from the main body portion to the outside of the accommodating cavity and fixed to the bottom wall by injection molding, an extension portion formed by bending and extending from the main body portion and injected into the boss, and a second electrical connection portion formed by bending and extending from the extension portion and fixed to the boss by injection molding, wherein the first electrical connection portion is electrically connected with an external circuit, and the second electrical connection portion is exposed on a side of the boss away from the bottom wall, the pad is arranged on the second electric connection part and is electrically connected with the second electric connection part.

7. The loudspeaker box of claim 6, wherein the front cover includes a plastic member and a reinforcing rigid body injection-molded and fixed to the plastic member, the support wall is located on the plastic member, and the soldering lug is injection-molded and fixed to the plastic member.

8. The speaker box of claim 7, wherein the reinforcing rigid body comprises a body and a plurality of walls extending from the body into the plastic part, the walls enclosing a tapered through hole, the tapered through hole being filled with the plastic of the plastic part, the tapered through hole comprising a first opening and a second opening, the first opening and the second opening being respectively disposed at two ends of the tapered through hole, the second opening being closer to the receiving cavity than the first opening, and the size of the tapered through hole gradually decreases along a direction from the first opening to the second opening.

9. A loudspeaker enclosure according to claim 8, wherein the stiffening rigid body is made of a metal material and the enclosure walls are stamped and formed from the body.

10. The loudspeaker box of claim 1, wherein a powder filling hole is formed in a position of the front cover or/and the rear cover, which is opposite to the rear cavity, and a sealing cover covers the powder filling hole.