CN211321501U

CN211321501U - Loudspeaker box

Info

Publication number: CN211321501U
Application number: CN202020058398.5U
Authority: CN
Inventors: 吴军; 魏威
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-08-21
Anticipated expiration: 2030-01-09
Also published as: WO2021138952A1

Abstract

The utility model provides a loudspeaker box, which comprises a lower cover, an upper cover forming an accommodating space with the lower cover, a sounding monomer and a ventilating isolation component; the upper cover is provided with a supporting wall, the sounding single body is supported and fixed on the supporting wall, the breathable isolation assembly is fixed on the supporting wall and positioned between the sounding single body and the lower cover, the breathable isolation assembly and the sounding single body jointly divide the accommodating space into a front cavity and a rear cavity, and the sounding single body is provided with an inner cavity and a leakage part communicated with the inner cavity; the breathable isolation component comprises an annular support and a breathable isolation piece, the support is fixedly overlapped on the support wall and arranged around the sounding single body, the breathable isolation piece is fixed on the support and completely covers the sounding single body and is arranged at an interval with the lower cover, and the inner cavity is communicated with the rear cavity through the leakage part and the breathable isolation piece in sequence; the back intracavity is filled with and inhales the sound granule, and ventilative isolation component will inhale the sound granule and encapsulate in the back intracavity. Compared with the prior art, the utility model discloses a speaker box filling is efficient, and low frequency acoustic performance is excellent.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion equipment technical field especially relates to a loudspeaker box.

[ 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 in the related art comprises an upper cover, a lower cover, a sound production single body and a ventilating isolating piece, wherein the lower cover is assembled with the upper cover to form an accommodating space; the sound production unit and the upper cover enclose a front cavity, the sound production unit, the upper cover and the lower cover jointly enclose a rear cavity, a blocking wall is formed in the rear cavity, the breathable partition piece is attached to the blocking wall and jointly divides the rear cavity into a first rear cavity and a second rear cavity which are mutually communicated with air, and the sound production unit is partially located in the first rear cavity.

However, in the related art speaker box, the baffle wall and the air-permeable partition encapsulate the sound-absorbing particles in the second rear cavity to form the DBASS space serving as a virtual sound cavity, but the rear cavity cannot be efficiently utilized due to design limitations of the baffle wall structure, thereby limiting low-frequency acoustic performance of the speaker box.

Therefore, it is necessary 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 speaker box that filling efficiency is high, low frequency acoustic performance is good.

In order to achieve the above object, the present invention provides a speaker box, which comprises a lower cover, an upper cover covering the lower cover and enclosing an accommodating space, a sounding unit and a ventilating isolation assembly accommodated in the accommodating space; the upper cover comprises an upper cover body covered on the lower cover and an annular supporting wall which is convexly extended towards the lower cover from the upper cover body; the breathable isolation assembly is fixed on the supporting wall and located between the sounding monomer and the lower cover, the breathable isolation assembly and the sounding monomer jointly divide the accommodating space into a front cavity and a rear cavity, the sounding monomer is provided with an inner cavity, one side, close to the rear cavity, of the sounding monomer is provided with a leakage part communicated with the inner cavity, the breathable isolation assembly comprises an annular support and a breathable isolation piece, the support is fixedly overlapped on the supporting wall and surrounds the sounding monomer, the breathable isolation piece is completely covered on the sounding monomer and is arranged at an interval with the lower cover, the periphery of the breathable isolation piece is fixed on the support, and the inner cavity is communicated with the rear cavity through the leakage part and the breathable isolation piece in sequence; the rear cavity is filled with sound-absorbing particles, and the breathable isolation assembly encapsulates the sound-absorbing particles in the rear cavity.

Preferably, ventilative separator include with the sound production monomer just to the body that sets up, by the periphery of body is to being close to the upper cover direction is buckled and is extended annular extension and by the extension is kept away from the fixed part that the one end of body outwards buckled and is extended, the fixed part is fixed in the support is kept away from the one end of support wall.

Preferably, the speaker box further includes a conductive terminal, one end of the conductive terminal is fixedly electrically connected to the sound generating unit, the other end of the conductive terminal extends to the outside of the accommodating space through the rear cavity, the support is provided with a yielding groove formed by sinking of one side of the support wall towards the lower cover, and the conductive terminal extends to the rear cavity through the yielding groove.

Preferably, the periphery of the sounding monomer is fixed on the supporting wall through glue, and the support is fixed on the supporting wall through the glue.

Preferably, the sound production monomer includes vibration system, support vibration system's basin frame and with the fixed magnetic circuit of basin frame, magnetic circuit is including being fixed in the magnetism bowl of basin frame and install in the magnet portion of magnetism bowl, the magnet portion has the magnetic gap, the basin frame with it is fixed to support the wall, vibration system is including being fixed in the basin frame is kept away from the vibrating diaphragm of magnetism bowl one side and with the vibrating diaphragm is fixed and extends to the voice coil loudspeaker voice coil in magnetic gap, leakage portion sets up in the magnetism bowl.

Preferably, the magnetic bowl comprises a bottom plate right opposite to the vibration system and side plates bent and extended from two opposite sides of the bottom plate towards the basin frame, and the leakage part is formed between the two adjacent side plates.

Preferably, the vibration system further comprises a centering support fixed on one side of the voice coil far away from the vibrating diaphragm, one side of the centering support far away from the voice coil is fixed with the basin frame, and the centering support is located between the two adjacent side plates and is right opposite to the leakage part.

Preferably, the support wall includes by the upper cover body to the protruding first support wall that extends of lower cover direction and by the outer peripheral edges of first support wall to the second support wall that extends of lower cover direction, the sound production monomer supports to be fixed in first support wall is close to the one end of lower cover, the support supports to be fixed in the second support wall is close to the one end of lower cover.

Preferably, the vibrating diaphragm includes the vibration portion and certainly the vibration portion periphery extend and with the fixed part that the basin frame is fixed, the fixed part is including pressing from both sides to be located the basin frame with edge portion between the first support wall and certainly the edge portion court the extension that the basin frame direction was buckled and is extended, the extension presss from both sides to be located the basin frame with between the second support wall.

Preferably, the support wall falls at least partially within the body in an orthographic projection of the body.

Preferably, the body abuts against the sounding unit.

Compared with the prior art, the utility model discloses a loudspeaker box will sound production monomer, ventilative isolation component all support and are fixed in support wall and ventilative isolation component are located between sound production monomer and the lower cover, and the two will jointly accommodating space separates into antechamber and back chamber, the sound production monomer has the inner chamber, the sound production monomer is close to one side of back chamber seted up with the leakage portion of inner chamber intercommunication, the inner chamber passes through in proper order the leakage portion reaches ventilative isolation component with the back chamber intercommunication above-mentioned structure makes ventilative isolation component keep away from the back chamber of sound production monomer one side can all be filled and inhale the sound granule as virtual sound chamber, and the filling efficiency of the sound granule of inhaling of very big degree improvement back chamber has effectively improved loudspeaker box's low frequency acoustic performance.

[ description of the drawings ]

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

fig. 1 is a schematic perspective view of a speaker box according to the present invention;

fig. 2 is an exploded schematic view of a part of the three-dimensional structure of the speaker box of the present invention;

FIG. 3 is a schematic view of the assembly structure of the speaker box of the present invention without the lower cover;

FIG. 4 is a sectional view taken along line A-A of FIG. 1;

fig. 5 is an enlarged view of a portion B shown in fig. 4.

[ detailed description ] embodiments

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

Referring to fig. 1-5, the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound generating unit 3, a ventilation isolation assembly 4 and a conductive terminal 5. The lower cover 1 is arranged on the upper cover 2 and jointly forms an accommodating space 10.

The sounding single body 3 is accommodated in the accommodating space 10 and supported on the upper cover 2.

Specifically, the upper cover 2 includes an upper cover body 21 covering the lower cover 1, an annular support wall 22 protruding from the upper cover body 21 in the lower cover direction, and a sound guide channel 23 formed in the upper cover body 21.

In the present embodiment, the supporting wall 22 includes a first supporting wall 221 that protrudes from the upper cover body 21 toward the lower cover 1 and a second supporting wall 222 that extends from an outer peripheral edge of the first supporting wall 221 toward the lower cover 1, that is, the first supporting wall 221 and the second supporting wall 222 form a supporting step structure.

The sounding unit 3 is supported and fixed on the supporting wall 22. In this embodiment, the periphery of the sound generating unit 3 is fixed to the support wall 22 by gluing.

The breathable isolation component 4 is fixed on the supporting wall 22 and located between the sound-generating single body 3 and the lower cover 1, and the breathable isolation component 4 and the sound-generating single body 3 jointly divide the accommodating space 10 into a front cavity 101 and a rear cavity 102.

The front cavity 101 is used for sounding, sound-absorbing particles 7 are filled in the rear cavity 102, and the air-permeable isolating component 4 encapsulates the sound-absorbing particles 7 in the rear cavity 102 to form a DBASS virtual sound cavity for further improving the low-frequency acoustic performance.

Specifically, the sounding unit 3 is supported and fixed at one end of the first support wall 221 close to the lower cover 1, that is, supported on a support step structure formed by the first support wall 221 and the second support wall 222, and is fixed after the periphery of the sounding unit 3 is glued.

The sound production monomer 3 has inner chamber 30, sound production monomer 3 be close to one side of back chamber 102 seted up with the leakage part 300 of inner chamber 30 intercommunication, inner chamber 30 passes through in proper order leakage part 300 reaches ventilative spacer assembly 4 with back chamber 102 intercommunication.

Specifically, the sounding unit 3 includes a vibration system 31, a frame 32 supporting the vibration system 31, and a magnetic circuit system 33 fixed to the frame 32.

The magnetic circuit system 33 includes a magnetic bowl 331 fixed to the frame 32 and a magnet portion 332 attached to the magnetic bowl 331, the magnet portion 332 having a magnetic gap 330. The leakage portion 300 is opened in the magnetic bowl 331.

Preferably, the magnetic bowl 331 includes a bottom plate 3311 opposite to the vibration system 31 and side plates 3312 extending from opposite sides of the bottom plate 3311 to be bent toward the frame 32, and the leakage portion 300 is formed between two adjacent side plates 3312.

The frame 32 is fixed to the support wall 22, and in particular, the frame 32 is fixed to the first support wall 221.

The vibration system 31 includes a diaphragm 311 fixed on one side of the frame 32 far from the magnetic bowl 331, a voice coil 312 fixed with the diaphragm 311 and extending to the magnetic gap 330, and a centering support 313 fixed on one side of the voice coil 312 far from the diaphragm 311.

The diaphragm 311 and the upper cover body 21 form a front sound cavity 6 at an interval, and the sound guide channel 23 communicates the front sound cavity 6 with the outside and jointly forms the front cavity 101 for forming a side sound structure. The rear cavity 102 is defined by the sounding monomer 3, the breathable isolation component 4, the upper cover 2 and the lower cover 1 together, and is used for improving low-frequency acoustic performance.

Preferably, the diaphragm 311 includes a vibrating portion 3111 and a fixing portion 3112 extending from a periphery of the vibrating portion 3111 and fixed to the frame 32, the fixing portion 3112 includes an edge portion 31121 interposed between the frame 32 and the first support wall 221 and an extending portion 31122 bent and extending from the edge portion 31121 toward the frame 32, and the extending portion 31122 is interposed between the frame 32 and the second support wall 222.

The voice coil 312 drives the diaphragm 311 to vibrate and generate sound.

The side of the centering support 313 away from the voice coil 312 is fixed with the basin frame 32. In this embodiment, the centering branch piece 313 is located between two adjacent side plates 3312 and faces the leakage part 300.

Specifically, the air-permeable barrier assembly 4 includes a ring-shaped support 41 and an air-permeable barrier 42.

The support 41 is fixed on the support wall 22 in a stacking manner and surrounds the sounding unit 3, and in the embodiment, the support 41 is fixed on the support wall 22 through glue. Specifically, the bracket 41 is supported and fixed at one end of the second support wall 222 close to the lower cover 1.

Preferably, the glue of the bracket 41 fixed to the second supporting wall 222 and the glue of the sound-generating unit 3 fixed to the first supporting wall 221 are connected into a whole and cured.

The ventilating spacer 42 is completely covered on the sounding unit 3 and spaced from the lower cover 1, and the periphery of the ventilating spacer 42 is fixed on the bracket 41. The inner chamber 30 is in turn communicated with the rear chamber 102 via the leakage portion 300 and the air-permeable partition 43.

In this embodiment, the support 41 and the air-permeable isolating piece 42 make the air-permeable isolating component 4 form a three-dimensional structure, so that the back cavity 102 of the side of the air-permeable isolating component 4 away from the sounding unit 3 is filled with the sound-absorbing particles 7 and then is completely used as a DBASS virtual sound cavity, thereby effectively improving the low-frequency acoustic performance of the speaker box 100; because of ventilative isolation component 4 lid locates sound production monomer 3, the improvement of very big degree the volume of rear chamber 102 to the filling efficiency of the sound granule of inhaling in the rear chamber 102 has effectively been improved.

Specifically, the ventilation isolation member 42 includes a body 421 facing the sound-generating unit 3, an annular extension portion 422 extending from the periphery of the body 421 to the direction close to the upper cover 2, and a fixing portion 423 extending from the extension portion 422 to the outside at the end far away from the body 421. The fixing portion 423 is fixed to an end of the bracket 41 away from the supporting wall 22. This configuration allows the air-permeable barrier member 4 to form a three-dimensional structure.

In this embodiment, the periphery of the body 421 faces the supporting wall 22, i.e. completely covers the sound generating unit 3. The body 421 butt in the sound production monomer 3, this structural setting makes the volume of rear cavity 102 as big as possible, and very big degree has improved the effective utilization of rear cavity 102 promptly, and has improved the filling efficiency of rear cavity 102.

The conductive terminal 5 is fixedly and electrically connected with the sounding monomer 3 and is used for introducing an external electric signal for the sounding monomer 3. One end of the conductive terminal 5 is fixedly and electrically connected to the sound generating unit 3, and the other end extends to the outside of the accommodating space 10 through the rear cavity 30.

In this embodiment, the support 41 is provided with a yielding slot 411 formed by recessing the side of the support wall 22 toward the lower cover 1, and the conductive terminal 5 extends to the rear cavity 102 through the yielding slot 411. Of course, the conductive terminal 5 passes through when the groove 411 of stepping down extends the groove 411 of stepping down needs to form sealedly, avoids inhaling the sound granule 7 and gets into inner chamber 30 and influence acoustic performance.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A loudspeaker box comprises a lower cover, an upper cover, a sound production unit and a ventilation isolation assembly, wherein the upper cover is covered on the lower cover and jointly forms an accommodating space; the upper cover comprises an upper cover body covering the lower cover and an annular supporting wall extending from the upper cover body to the lower cover in a protruding manner, the sounding monomers are supported and fixed on the supporting wall, the ventilating isolation assembly is fixed on the supporting wall and positioned between the sounding monomers and the lower cover, the ventilating isolation assembly and the sounding monomers jointly separate the accommodating space into a front cavity and a rear cavity, the sounding monomers are provided with inner cavities, one side of the sounding monomers, which is close to the rear cavity, is provided with a leakage part communicated with the inner cavities, the ventilating isolation assembly comprises an annular support and a ventilating isolation piece, the support is overlapped and fixed on the supporting wall and surrounds the sounding monomers, the ventilating isolation piece is completely covered on the sounding monomers and is arranged at intervals with the lower cover, and the periphery of the ventilating isolation piece is fixed on the support, the inner cavity is communicated with the rear cavity through the leakage part and the breathable isolating piece in sequence; the rear cavity is filled with sound-absorbing particles, and the breathable isolation assembly encapsulates the sound-absorbing particles in the rear cavity.

2. The loudspeaker box of claim 1, wherein the ventilation spacer comprises a body opposite to the sound generating unit, an annular extending portion extending from the periphery of the body in a bending manner toward the upper cover, and a fixing portion extending from one end of the extending portion away from the body in an outward bending manner, and the fixing portion is fixed to one end of the bracket away from the supporting wall.

3. The speaker box according to claim 2, further comprising a conductive terminal, wherein one end of the conductive terminal is fixedly electrically connected to the sound generating unit, the other end of the conductive terminal extends out of the accommodating space through the rear cavity, the bracket is provided with a recess formed by recessing a side of the bracket close to the supporting wall toward the lower cover, and the conductive terminal extends to the rear cavity through the recess.

4. A loudspeaker enclosure according to claim 3, wherein the periphery of the sound generating unit is adhesively secured to the support wall by glue, and the support is adhesively secured to the support wall by the glue.

5. The loudspeaker box of claim 1, wherein the sound generating unit comprises a vibration system, a frame supporting the vibration system, and a magnetic circuit system fixed to the frame, the magnetic circuit system comprises a magnetic bowl fixed to the frame and a magnet portion mounted to the magnetic bowl, the magnet portion has a magnetic gap, the frame is fixed to the support wall, the vibration system comprises a diaphragm fixed to a side of the frame away from the magnetic bowl and a voice coil fixed to the diaphragm and extending to the magnetic gap, and the leakage portion is provided in the magnetic bowl.

6. A loudspeaker enclosure according to claim 5, wherein the magnetic bowl comprises a base plate facing the vibration system and side plates extending from opposite sides of the base plate towards the frame, the leakage being formed between adjacent side plates.

7. The speaker box of claim 6, wherein the vibration system further comprises a centering pad fixed to a side of the voice coil remote from the diaphragm, the centering pad is fixed to the frame remote from the voice coil, and the centering pad is located between two adjacent side plates and directly faces the leakage portion.

8. The speaker box according to claim 5, wherein the support walls include a first support wall extending from the upper cover body to project toward the lower cover, and a second support wall extending from an outer peripheral edge of the first support wall toward the lower cover, the sound generating unit is supported and fixed to one end of the first support wall near the lower cover, and the bracket is supported and fixed to one end of the second support wall near the lower cover.

9. The loudspeaker box of claim 8, wherein the diaphragm includes a vibrating portion and a fixing portion extending from a periphery of the vibrating portion and fixed to the frame, the fixing portion includes an edge portion interposed between the frame and the first support wall and an extending portion extending from the edge portion toward the frame, and the extending portion is interposed between the frame and the second support wall.

10. A loudspeaker enclosure according to claim 2, wherein the support wall at least partially falls within the body in an orthographic projection of the body.

11. A loudspeaker enclosure according to claim 2, wherein the body abuts against the sound-generating cell.