CN211531301U

CN211531301U - Loudspeaker box

Info

Publication number: CN211531301U
Application number: CN201922354819.9U
Authority: CN
Inventors: 印兆宇
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-18
Anticipated expiration: 2029-12-24

Abstract

The utility model provides a loudspeaker box, which comprises a lower cover, an upper cover, a sounding monomer and a ventilating isolation component; the sound-producing single body and the upper cover are separated to form a front cavity, the sound-producing single body, the upper cover and the lower cover are together separated to form a rear cavity, the ventilating isolation component divides the rear cavity into a first rear cavity and a second rear cavity which are mutually communicated with air, at least part of the sound-producing single body is positioned in the first rear cavity, the ventilating isolation component and the lower cover are separated to form a second rear cavity, sound-absorbing particles are filled in the second rear cavity, and the ventilating isolation component encapsulates the sound-absorbing particles in the second rear cavity; the breathable isolation assembly comprises a breathable isolation piece, a first reinforcing ring and a second reinforcing ring; the first reinforcing ring is connected with the lower cover, the breathable isolating piece is provided with a powder filling opening penetrating through the breathable isolating piece, and the second reinforcing ring is arranged around the powder filling hole; the loudspeaker box also comprises a sealing cover for sealing the powder filling hole. Compared with the prior art, the utility model discloses a speaker box assembles efficiently, 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 sounding single body and the upper cover enclose a front cavity, and the sounding single body, the upper cover and the lower cover together enclose a rear cavity; ventilative separator is located one side of preceding chamber is kept away from to sound production monomer, and will the back chamber is for the first back chamber and the second back chamber of mutual air intercommunication, sound production monomer at least part is located first back chamber, ventilative separator is fixed in the lower cover and with the lower cover interval forms the cavity behind the second, through the lower cover is just right sound production monomer's the sunken heavy platform that forms in position and setting up the through-hole that runs through heavy platform, again through this through-hole to the second back chamber intussuseption inhale the sound granule, ventilative separator will inhale the sound granule encapsulate in the cavity behind the second, thereby improve the low frequency acoustic performance of speaker box.

However, in the speaker box of the related art, the depth of the sinking platform is generally 0.25mm, and the sinking platform is used for accommodating the cover plate for sealing the through hole, and a powder filling channel is formed between the position of the lower cover corresponding to the through hole and the air-permeable partition, and the height of the powder filling channel is reduced due to the arrangement of the sinking platform, so that the powder filling efficiency is low, and even the powder cannot be filled.

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 assembly efficiency is high, 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 a containing space, a sounding unit and a ventilating isolation assembly, wherein the sounding unit and the ventilating isolation assembly are contained in the containing space and supported on the upper cover; the sound-producing unit and the upper cover are separated to form a front cavity, the sound-producing unit, the upper cover and the lower cover are together separated to form a rear cavity, the breathable isolation assembly divides the rear cavity into a first rear cavity and a second rear cavity which are mutually communicated with air, the sound-producing unit is at least partially positioned in the first rear cavity, the breathable isolation assembly is fixed on the lower cover and is separated from the lower cover to form the second rear cavity, the second rear cavity is filled with sound-absorbing particles, and the breathable isolation assembly encapsulates the sound-absorbing particles in the second rear cavity; the breathable isolation assembly comprises a breathable isolation piece, a first reinforcing ring and a second reinforcing ring, wherein the first reinforcing ring is attached to one side, close to the lower cover, of the breathable isolation piece and extends along the periphery of the breathable isolation piece; the first reinforcing ring is connected to the lower cover in a supporting mode, the breathable isolating piece is provided with a powder filling opening penetrating through the breathable isolating piece, and the second reinforcing ring is arranged around the powder filling opening; the loudspeaker box further comprises a sealing cover which is covered on one side of the second reinforcing ring, which is far away from the second rear cavity, and seals the powder filling opening.

Preferably, the breathable isolating piece comprises a body part and an extension body, wherein the body part is arranged opposite to the sounding monomer, the extension body extends from one end of the body part and is arranged in a staggered manner with the sounding monomer, and the powder filling opening is formed in the extension body.

Preferably, the inner side of the lower cover protrudes to form a support wall corresponding to the position of the first reinforcement ring, and the first reinforcement ring is supported and fixed on the support wall.

Preferably, the first reinforcement ring and the second reinforcement ring are made of a metal material.

Preferably, the lower cover is provided with a through hole which penetrates through the lower cover and communicates the second rear cavity with the outside and a steel sheet which covers the through hole, and the steel sheet and the breathable isolating piece are arranged in parallel and oppositely.

Preferably, the sealing cover is made of PET material.

Compared with the prior art, the loudspeaker box of the utility model arranges the ventilating isolation component between the sounding monomer and the lower cover, the first reinforcing ring is connected to the lower cover in a supporting way and forms the second rear cavity together with the elastic isolation piece and the lower cover, and the extending body of the ventilating isolation piece is provided with the powder filling port, so that the sound absorption particles are filled into the second rear cavity through the powder filling port, thereby the rear side of the sounding monomer forms an integral DBASS virtual sound cavity, and the low-frequency acoustic performance is effectively improved; meanwhile, the powder filling port is formed in the breathable isolating piece, so that the situation that the lower cover needs to be provided with a sinking platform when the lower cover is formed in the powder filling port to occupy the height space of the powder filling channel is avoided, the powder filling port is formed in the breathable isolating piece to enable the height of the powder filling channel to be consistent with that of the DBASS virtual sound cavity, and the filling efficiency and reliability of sound absorption particles are effectively improved.

[ 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 an exploded view of another perspective part of the speaker box according to the present invention;

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 sealing cover 5. The upper cover 2 is covered on the lower cover 1 and forms an accommodating space 10 together with the lower cover.

The sounding single body 3 is accommodated in the accommodating space 10 and supported on the upper cover 2. The sound generating single body 3 and the upper cover 2 are spaced to form a front cavity 101.

Specifically, the upper cover 2 is formed with the sound conduction channel 21, the sound production monomer 3 includes the vibrating diaphragm 31, the vibrating diaphragm 31 with the interval of upper cover 2 forms preceding sound chamber 6, the sound conduction channel 21 will preceding sound chamber 6 communicates with the external world and forms jointly preceding chamber 101 for form side sound production structure. The sounding monomer 3, the upper cover 2 and the lower cover 1 jointly enclose a rear cavity 102 for improving low-frequency acoustic performance.

The air-permeable barrier assembly 4 divides the rear cavity 102 into a first rear cavity 1021 and a second rear cavity 1022 that are in air communication with each other. The sound generating unit 3 is at least partially located in the first back cavity 1021. The air-permeable isolating component 4 is fixed to the lower cover 1 and is spaced from the lower cover 1 to enclose the second rear cavity 1022; the second rear cavity 1022 is filled with sound-absorbing particles 7 to form a DBASS virtual acoustic cavity for further improving low frequency acoustic performance.

Specifically, the air-permeable insulation component 4 encapsulates the sound-absorbing particles 7 in the second rear cavity 1022; the breathable isolation assembly 4 comprises a breathable isolation member 41, a first reinforcing ring 42 attached to one side of the breathable isolation member 41 close to the lower cover 1 and extending along the periphery of the breathable isolation member 41, and a second reinforcing ring 43 attached to one side of the breathable isolation member 41 far away from the lower cover 1.

The ventilation spacer 41 includes a main body 411 facing the sound generating unit 3, and an extension 412 extending from one end of the main body 411 and disposed in a staggered manner with respect to the sound generating unit.

In order to improve the reliability and strength of the powder filling opening, in the present embodiment, the first reinforcing ring 42 is supported and connected to the lower cover 1, the air-permeable partition 41 is provided with a powder filling opening 413 penetrating therethrough, and the second reinforcing ring 43 is disposed around the powder filling opening 413.

In this embodiment, the powder filling port 413 is opened in the extension 412, that is, the powder filling hole 413 and the sound generating unit 3 are arranged in a staggered manner.

The sound-absorbing particles 7 are filled into the second rear cavity 1022 through the powder filling port 413, and the air-permeable isolation component 4 encapsulates the sound-absorbing particles 7 in the second rear cavity 1022.

In this embodiment, preferably, the ventilation isolation component 4 is disposed perpendicular to the vibration direction, that is, the ventilation isolation component 4 is disposed parallel to the sound-generating unit 3, so that the volume of the second rear cavity 1022 is maximized.

The area of the second rear cavity 1022 facing the powder filling port 413 is a powder filling channel. In the above-mentioned structure, set up in ventilative isolator 41 because of filling powder mouth 413 extension body 412 has avoided because of filling powder mouth 413 and has seted up the lower cover when lower cover 1 and need set up the heavy platform and occupy the high space of filling the powder passageway at lower cover 1, and fill powder mouth 413 set up make behind ventilative isolator 41 fill the powder passageway with fill the second in the back chamber 1022 highly unanimous in the virtual sound chamber of light DBASS, effectively improved the filling efficiency and the filling reliability of inhaling sound granule 7.

The sealing cover 5 is disposed on a side of the second reinforcing ring 43 away from the second rear cavity 1022, and the sealing cover 5 is used for sealing the powder filling opening 413. Because the sealing cover 5 is located on the side of the air-permeable isolating component 4 far from the second rear cavity 1022, on one hand, the powder filling port 413 is conveniently sealed, and on the other hand, the volume of the second rear cavity 1022 is not occupied, so that more sound absorbing particles are filled in the second rear cavity 1022.

During the assembly, earlier lower cover 1 and ventilative isolation component 4 equipment form second back chamber 1022, irritate through irritating powder mouth 413 and inhale sound granule 7 in second back chamber 1022, the sealed lid 5 of reuse seals irritates powder mouth 413, covers upper cover 2 and passes through ultrasonic connection with lower cover 1 at last.

Preferably, the sealing cover 5 is made of PET material.

In this embodiment, in order to increase the height of the second rear cavity 1022 along the vibration direction, the sealing cover 5 and the sounding unit 3 need to be prevented from interfering with each other, so the extension body 412 and the sounding unit 3 are arranged in a staggered manner, and the powder filling port 413 is opened in the extension body 412, i.e. the sealing cover 5 and the sounding unit 3 are arranged in a staggered manner.

Preferably, the first reinforcement ring 42 and the second reinforcement ring 43 are made of a metal material, such as a steel ring. The metal material can be made thin while satisfying the strength, and occupies the body cavity of the rear cavity 102 as small as possible.

In this embodiment, the weight of the ventilation isolation assembly is increased due to the first reinforcing ring 42, and accordingly, the inner side of the lower cover 1 is protruded to form the supporting wall 11 at a position corresponding to the first reinforcing ring 42, and the first reinforcing ring 42 is supported and fixed to the supporting wall 11, so as to improve the stability of the ventilation isolation assembly.

In order to further increase the volume of the second rear chamber 1022, the lower cover 1 is provided with a through hole 12 penetrating therethrough and communicating the second rear chamber 1022 with the outside, and a steel sheet 13 covering the through hole 12. The steel sheet 13 can be designed to be thinner than the thickness of the lower cover 1 itself on the premise of satisfying the strength of the lower cover 1, thereby increasing the volume of the second rear cavity 1022. Preferably, the steel sheet 13 is arranged in parallel opposite to the ventilation isolating piece 41.

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 sound production unit is accommodated in the accommodating space and supported on the upper cover, and the ventilation isolation assembly is arranged on the upper cover; the sound-producing mechanism is characterized in that the air-permeable isolating component is fixed on the lower cover and is separated from the lower cover to form a second rear cavity, the second rear cavity is filled with sound-absorbing particles, and the air-permeable isolating component encapsulates the sound-absorbing particles in the second rear cavity; the breathable isolation assembly comprises a breathable isolation piece, a first reinforcing ring and a second reinforcing ring, wherein the first reinforcing ring is attached to one side, close to the lower cover, of the breathable isolation piece and extends along the periphery of the breathable isolation piece; the first reinforcing ring is connected to the lower cover in a supporting mode, the breathable isolating piece is provided with a powder filling opening penetrating through the breathable isolating piece, and the second reinforcing ring is arranged around the powder filling opening; the loudspeaker box further comprises a sealing cover which is covered on one side of the second reinforcing ring, which is far away from the second rear cavity, and seals the powder filling opening.

2. The speaker box according to claim 1, wherein the air-permeable partition includes a body portion disposed opposite to the sound generating unit and an extension extending from one end of the body portion and disposed in a staggered manner with respect to the sound generating unit, and the powder filling opening is opened in the extension.

3. A loudspeaker enclosure according to claim 1, wherein the inner side of the lower cover projects to form a support wall corresponding to the position of the first reinforcing ring, and the first reinforcing ring is supported and fixed to the support wall.

4. A loudspeaker enclosure according to claim 1, wherein the first stiffening ring and the second stiffening ring are both of a metallic material.

5. The loudspeaker box of claim 1, wherein the lower cover has a through hole penetrating the lower cover and communicating the second rear cavity with the outside, and a steel sheet covering the through hole, the steel sheet and the air-permeable partition being disposed in parallel and facing relation.

6. A loudspeaker enclosure according to claim 1, wherein the sealing cover is of PET material.