CN112073851A - Loudspeaker box - Google Patents

Loudspeaker box Download PDF

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Publication number
CN112073851A
CN112073851A CN202010880914.7A CN202010880914A CN112073851A CN 112073851 A CN112073851 A CN 112073851A CN 202010880914 A CN202010880914 A CN 202010880914A CN 112073851 A CN112073851 A CN 112073851A
Authority
CN
China
Prior art keywords
sound
rear cover
support
front cover
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010880914.7A
Other languages
Chinese (zh)
Inventor
吴军
印兆宇
魏威
刘忠原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Optoelectronic Changzhou Co Ltd
Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Original Assignee
AAC Optoelectronic Changzhou Co Ltd
Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AAC Optoelectronic Changzhou Co Ltd, Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd filed Critical AAC Optoelectronic Changzhou Co Ltd
Priority to CN202010880914.7A priority Critical patent/CN112073851A/en
Priority to PCT/CN2020/124383 priority patent/WO2022041461A1/en
Publication of CN112073851A publication Critical patent/CN112073851A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

The invention provides a loudspeaker box which comprises a shell, a sounding monomer and an annular bracket made of plastics, wherein the sounding monomer is arranged on the shell; the sound production unit and the shell jointly enclose a rear sound cavity, the sound production unit comprises a vibrating diaphragm, the shell comprises a front cover made of a metal material, a rear cover made of a metal material and covering and fixed on the front cover, a sound outlet and a sealing sheet made of a metal material, the rear cover is provided with a through hole, the sealing sheet is covered and fixed on the rear cover and completely covers the through hole, the sealing sheet is provided with a groove, and the groove is communicated with the through hole; the support encircles the sound outlet setting and wraps up the periphery of sound outlet in order to form fixed connection with the protecgulum, and the sound production monomer supports in the support, and the vibrating diaphragm is towards the sound outlet, and the support encircles the free week side of sound production and forms sealed fixed with the sound production monomer, and sound production monomer, support, protecgulum, back lid and gasket enclose into inclosed back sound chamber jointly. Compared with the related art, the loudspeaker box has the advantages of large cavity volume and good acoustic performance.

Description

Loudspeaker box
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a loudspeaker box applied to a portable mobile electronic product.
[ background of the invention ]
The loudspeaker box is widely applied to portable mobile electronic products, such as mobile phones, so that audio signals are converted into sound to be played, the loudspeaker box is high in loudness, and the low-frequency sound effect is good.
The loudspeaker box in the related art comprises a front cover, a rear cover and a sound generating unit, wherein the rear cover is covered on the front cover and jointly forms an accommodating space, the sound generating unit is accommodated in the accommodating space, and the accommodating space is divided into a front cavity and a rear cavity by the sound generating unit.
However, the front cover and the rear cover of the speaker box in the related art are formed by injection molding, and the sound generating unit is sealed by ultrasonic welding, which requires more volume, so that the volume design of the front cavity and the rear cavity is limited, and the acoustic performance is limited.
Therefore, there is a need to provide a new speaker box to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a loudspeaker box with a large cavity and good acoustic performance.
In order to achieve the above object, the present invention provides a speaker box, which comprises a housing, a sound generating unit fixedly accommodated in the housing, and a ring-shaped support made of plastic and located in the housing, the sound generating unit and the shell jointly enclose a rear sound cavity, the sound generating unit comprises a vibrating diaphragm for vibrating and generating sound, the shell comprises a front cover made of metal material, a rear cover made of metal material and fixed on the front cover in a covering manner, a sound outlet arranged through the front cover and a sealing sheet made of metal material, the rear cover is provided with a through hole penetrating through the rear cover, the sealing sheet is covered and fixed on one side of the rear cover far away from the front cover and completely covers the through hole, one side, close to the through hole, of the sealing sheet is sunken towards the direction far away from the sounding monomer to form a groove, and the groove is communicated with the through hole; the support encircles the sound outlet sets up and will the periphery parcel of sound outlet in order with the protecgulum forms fixed connection, the sound production monomer support in the support, the vibrating diaphragm orientation sound outlet, the support encircles the free week side of sound production sets up and with the sound production monomer forms sealed fixed, the sound production monomer the support the protecgulum, the back lid and the gasket encloses into inclosed jointly the back acoustic cavity.
Preferably, an orthographic projection of the groove along the vibration direction of the diaphragm coincides with the through hole.
Preferably, the sealing sheet further comprises a first reinforcing rib which extends from the inner part of the groove and is connected with two opposite sides of the groove.
Preferably, the rear cover further comprises a second reinforcing rib positioned in the through hole and connected with two opposite sides of the through hole, and the second reinforcing rib is opposite to the first reinforcing rib and is abutted against the first reinforcing rib.
Preferably, the front cover comprises a front cover body provided with the sound outlet, a front cover outer side wall extending from the outer periphery of the front cover body to the rear cover direction and fixedly connected with the rear cover, and a front cover inner side wall extending from the inner periphery of the front cover body to the rear cover direction; the support is including being located casing and butt simultaneously are fixed in the protecgulum body with the support body of protecgulum inside wall and by the support body is followed the protecgulum inside wall extends and will the support extension wall of protecgulum inside wall parcel, the support extension wall surrounds sound production free week side set up and with sound production free body forms sealed fixed.
Preferably, the loudspeaker box further comprises a breathable isolating piece located in the rear sound cavity, and the breathable isolating piece is attached to the sound generating unit and separates the sound generating unit from the rear sound cavity.
Preferably, the breathable isolating piece comprises an isolating piece body which is opposite to the rear cover at intervals and is attached to the sounding single body, an isolating piece extending part which is bent and extended from the periphery of the isolating piece body to the direction of the support, and an isolating piece fixing part which is bent and extended from one end, far away from the isolating piece body, of the isolating piece extending part; the isolating piece extending part is arranged at a distance from the shell, and the isolating piece fixing part is fixed on one side of the bracket body close to the rear cover; the breathable partition, the support, the front cover, the rear cover and the sealing sheet jointly enclose a powder filling space, and the powder filling space is used for filling sound-absorbing materials.
Preferably, the speaker box further comprises a conductive piece for connecting the sounding monomer with an external electrical signal, wherein the conductive piece comprises a conductive piece body which is supported and fixed at one end of the bracket body close to the rear cover, a connecting arm which extends from two ends of the conductive piece body to the sounding monomer and is fixedly and electrically connected with the sounding monomer, and an extending arm which extends from the conductive piece body to a direction far away from the sounding monomer and penetrates through the shell; one side of the support body, which is close to the rear cover, is sunken to form an accommodating groove, the conductive piece body is arranged in the accommodating groove, the conductive piece body and one side of the support body, which is close to the rear cover, are flush, and the isolating piece fixing part is simultaneously pressed and fixed on the conductive piece body and the support.
Preferably, the rear cover comprises a rear cover body and a rear cover side wall, the rear cover body is arranged opposite to the partition body at intervals, the rear cover side wall is bent and extended along the front cover direction from the periphery of the rear cover body and is fixedly connected with the front cover outer side wall in an abutting mode, the extension arm penetrates through the front cover outer side wall and the rear cover side wall simultaneously, the through hole is formed in the rear cover body, and the sealing sheet is fixed to the rear cover body.
Preferably, one side of the front cover, which is far away from the rear cover, is attached with a rubber ring, and the rubber ring surrounds the sound outlet.
Compared with the prior art, the loudspeaker box has the advantages that the front cover, the rear cover and the sealing sheet of the shell are made of metal materials, the support made of plastic materials is fixed with the front cover to support and fix the sounding single body, in the structure, the plastic support is combined with the metal front cover, the metal front cover is combined with the metal rear cover, and the metal rear cover is combined with the metal sealing sheet, so that the loudspeaker box can be designed to be thinner than a full-plastic shell structure on the premise of ensuring the structural strength of the shell, and the volume of a cavity in the shell is greatly improved. Preferably, the rear cover is provided with a through hole, and the sealing sheet is provided with a groove, wherein the groove is communicated with the through hole, so that the volume of the cavity in the shell is further increased. The volume of a rear sound cavity formed by the sounding monomer and the shell in an enclosing mode is effectively increased through the structure, and then the acoustic performance, particularly the low-frequency acoustic performance of the loudspeaker box is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a speaker box according to the present invention;
FIG. 2 is a schematic perspective view of another angle of the speaker box of the present invention;
FIG. 3 is an exploded perspective view of a portion of the speaker box of 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
FIG. 6 is a schematic perspective view of the rear cover and sealing sheet of the speaker box of the present invention;
FIG. 7 is an exploded view of the portion of FIG. 6;
fig. 8 is another partially exploded perspective view of fig. 7.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a speaker box 100, which includes a housing 1, a sound generating unit 2 having a vibrating diaphragm 21 and fixedly accommodated in the housing 1, and a support 3 made of plastic and located in the housing 1, wherein the sound generating unit 2 and the housing 1 jointly form a rear sound cavity 10.
The housing 1 includes a front cover 11 made of a metal material, a rear cover 12 made of a metal material and fixed to the front cover 11, a sound outlet 13 provided through the front cover 11, and a sealing sheet 14 made of a metal material.
The front cover 11 includes a front cover body 111 provided with the sound outlet 13, a front cover outer side wall 112 extending from an outer peripheral edge of the front cover body 111 toward the rear cover 12 and fixedly connected to the rear cover 12, and a front cover inner side wall 113 extending from an inner peripheral edge of the front cover body 111 toward the rear cover 12.
The rear cover 12 includes a through hole 120 penetrating therethrough, a rear cover body 121 disposed opposite to the sound generating unit 2 at an interval, and a rear cover sidewall 122 bent and extended from the periphery of the rear cover body 121 toward the front cover 11 and fixed in abutment with the front cover outer sidewall 112. The through hole 120 is disposed in the rear cover body 121.
In this embodiment, the front cover 11 is fixed by welding the front cover outer side wall 112 and the rear cover side wall 122 of the rear cover, and the front cover 11 and the rear cover 12 can be designed to be thinner and have more reliable fixing strength compared with the prior art plastic structure.
The seal piece 14 is fixed to the rear cover body 121. Specifically, the sealing sheet 14 is fixed on one side of the rear cover 12 away from the front cover 11 and completely covers the through hole 12.
Support 3 is the annular structure, sound production monomer 2 is including the vibrating diaphragm 21 that is used for the vibration sound production, vibrating diaphragm 21 orientation the sound outlet sets up, support 3 encircles sound production monomer 2's week side set up and with sound production monomer 2 forms sealed fixed, support 3 encircles sound outlet 13 sets up and will sound outlet 13's periphery parcel with protecgulum 11 forms fixed connection. Thus, the sound generating unit 2, the bracket 3, the front cover 11, the rear cover 12 and the sealing sheet 14 together enclose the sealed rear sound cavity 10.
In the above structure, the integrated configuration of gasket 14, protecgulum 11, back lid 12 and support 3, because of gasket 14, protecgulum 11 and back lid 12 are made of metal material, metallic protecgulum 11 and the combination of metallic back lid 12, metallic back lid 12 and the combination of metallic gasket 14, and support 3 and protecgulum 11 through plastic materials make are fixed, be used for supporting fixed sound production monomer 2, under the prerequisite of guaranteeing casing 1's structural strength, it not only can be designed thinner for full plastic shell structure, and the same effectual assembly sound production monomer 2, thereby the cavity volume in casing 1 has been improved to very big degree, the effectual sound production monomer 2 that has increased with the volume of the back sound chamber 10 that casing 1 encloses, and then improved the acoustic performance, especially the low frequency acoustic performance of speaker box 100.
Preferably, in order to further increase the volume of the cavity in the housing 1, the sealing sheet 14 is recessed to a direction away from the sound generating unit 2 on a side close to the through hole 12 to form a groove 140, and the groove 140 is communicated with the through hole 120. This structure communicates with the through-hole 120 through the groove 140, thereby further increasing the volume of the cavity inside the housing 1. The structure effectively increases the volume of the rear sound cavity 10 enclosed by the sound generating unit 2 and the shell 1, and further improves the acoustic performance, especially the low-frequency acoustic performance, of the loudspeaker box 100.
In this embodiment, the groove 140 is formed by etching the sealing sheet 14.
In this embodiment, an orthogonal projection of the groove 140 along the vibration direction of the diaphragm 21 coincides with the through hole 120. That is to say, the structure is in direct communication with the diaphragm 21 through the groove 140, so that the cavity formed by the groove 140 and the through hole 120 has the largest volume, which is beneficial to improving the low-frequency acoustic performance of the loudspeaker box 100.
In order to enhance the strength of the sealing piece 14, in the present embodiment, the sealing piece 14 further includes a first rib 141 protruding from the inside of the concave groove 140 and connecting opposite sides of the concave groove 140. The rear cover 12 further includes second reinforcing ribs 123 positioned in the through-hole 120 and coupled to opposite sides of the through-hole 120. The second reinforcing rib 123 is disposed opposite to the first reinforcing rib 141 and abutted against each other. This structure thus increases the strength of the sealing piece 14.
Referring to fig. 8, fig. 8 is an exploded view of another partial perspective structure of fig. 7. The second reinforcing rib 123 and the first reinforcing rib 141 are both in a cross structure, so that the strength of the sealing piece 14 is increased. Preferably, the second reinforcing rib 123 is matched in shape with the first reinforcing rib 141 and is integrally fixed, so that the strength of the integration of the rear cover 12 and the sealing sheet 14 is enhanced.
In this embodiment, a leakage portion 22 is disposed on one side of the sound generating unit 2 away from the diaphragm 21, and the leakage portion 22 is communicated with the rear sound cavity 10.
The sound production monomer 2 is equipped with one side orientation of vibrating diaphragm 21 sound outlet 13 and support in support 3, one side that sound production monomer 2 is close to vibrating diaphragm 21 is the sound production side promptly, directly communicates with the external world, forms positive sound production structure. Preferably, the sounding unit 2 is partially exposed out of the sound emitter 13, so as to further increase the volume of the rear sound cavity 10, thereby further improving the low-frequency acoustic performance.
The holder 3 includes a holder body 31 and a holder extension wall 32 extending from the holder body 31.
The bracket body 31 is located in the housing 1 and is abutted and fixed to the front cover body 111 and the front cover inner side wall 113. The bracket extension wall 32 extends along the front cover inner side wall 113 and wraps the front cover inner side wall 113, namely, the front cover inner side wall 113 is embedded in the bracket 3, so that the fixing reliability of the front cover inner side wall and the bracket extension wall is better. In this embodiment, the front cover 1 and the bracket 3 are integrally formed by plastic molding.
The support extension wall 32 surrounds the periphery of the sound generating unit 2 and is sealed and fixed with the sound generating unit 2, so that the rear sound cavity 10 forms a closed space to improve the low-frequency acoustic performance.
In this embodiment, an end of the bracket extension wall 32 away from the rear cover 12 is flush with the front cover body 111. The structure arrangement enables the support 3 and the front cover 11 to be consistent in structure, and the overall appearance attractiveness is better.
For further improving the low frequency acoustic performance of loudspeaker 100, speaker box 100 is still including being located ventilative separator 4 in back sound chamber 10, ventilative separator 4 pastes and locates sound production monomer 2 will sound production monomer 2 is followed separate in the back sound chamber 10 to make and fill sound absorbing material in the back sound chamber 10.
Specifically, the ventilation isolation member 4 includes an isolation member body 41 opposite to and attached to the back cover 12 at an interval, an isolation member extension portion 42 extending from the periphery of the isolation member body 41 toward the support 3, and an isolation member fixing portion 43 extending from the isolation member extension portion 42 away from one end of the isolation member body 41, and the isolation member fixing portion can be bent and extended toward a direction close to the front cover outer side wall 112, and can also be bent and extended toward a direction away from the front cover outer side wall 112. The spacer extension part 42 is spaced apart from the housing 1, and the spacer fixing part 42 is fixed to one side of the bracket body 31 close to the rear cover 12. Ventilative barrier 4, support 3, protecgulum 11, back lid 12 and gasket 14 enclose into jointly and irritate whitewashed space, irritate whitewashed space and be used for filling sound absorbing material, for example inhale the sound granule, inhale the sound cotton etc..
The speaker box 100 further includes a conductive member 5 for connecting the sound generating unit 2 with an external electric signal. In this embodiment, the conductive device 5 includes a conductive device body 51 supported and fixed at one end of the bracket body 31 close to the rear cover 12, a connecting arm 52 extending from two ends of the conductive device body 51 to the sounding unit 2 and fixedly electrically connected to the sounding unit 2, and an extending arm 53 extending from the conductive device body 51 to a direction away from the sounding unit 2 and penetrating through the housing 1. In this embodiment, the extension arm 53 penetrates through both the front cover outer sidewall 112 and the rear cover sidewall 122, the structure is convenient to assemble, and the position penetrating through the front cover outer sidewall 112 and the position penetrating through the rear cover sidewall 122 can be used as an assembly positioning in advance, thereby improving the assembly efficiency.
In order to effectively seal the air-permeable partition 4 and the bracket 3 when they are fixed, and ensure that the sound-absorbing material in the powder filling space does not enter the sound-generating unit 2 and affect the performance thereof, in this embodiment, one side of the bracket body 31 close to the rear cover 12 is recessed to form a receiving groove 311, the conductive piece body 51 is disposed in the receiving groove 311, so that the conductive piece body 51 and the bracket body 31 are flush with each other at one side close to the rear cover 12, and the partition fixing portion 43 is pressed and fixed on the conductive piece body 51 and the bracket body 31 of the bracket 3 at the same time.
Preferably, in the present embodiment, a rubber ring 6 is attached to a side of the front cover 11 away from the rear cover 12, and the rubber ring 6 is disposed around the sound outlet 13. The rubber ring 6 is used for realizing fixed sealing with the terminal whole machine when the speaker 100 is installed on the terminal. In the present embodiment, the rubber ring 6 is a double-sided tape, but is not limited thereto, and may be rubber, sponge, or the like.
Compared with the prior art, the loudspeaker box has the advantages that the front cover, the rear cover and the sealing sheet of the shell are made of metal materials, the support made of plastic materials is fixed with the front cover to support and fix the sounding single body, in the structure, the plastic support is combined with the metal front cover, the metal front cover is combined with the metal rear cover, and the metal rear cover is combined with the metal sealing sheet, so that the loudspeaker box can be designed to be thinner than a full-plastic shell structure on the premise of ensuring the structural strength of the shell, and the volume of a cavity in the shell is greatly improved. Preferably, the rear cover is provided with a through hole, and the sealing sheet is provided with a groove, wherein the groove is communicated with the through hole, so that the volume of the cavity in the shell is further increased. The volume of a rear sound cavity formed by the sounding monomer and the shell in an enclosing mode is effectively increased through the structure, and then the acoustic performance, particularly the low-frequency acoustic performance of the loudspeaker box is improved.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A loudspeaker box comprises a shell and a sound generating unit which is fixedly contained in the shell, wherein the sound generating unit and the shell jointly enclose a rear sound cavity, and the sound generating unit comprises a vibrating diaphragm for vibrating and generating sound; the loudspeaker box is still including being located what make by plastics in the casing is annular support, the support encircles the sound outlet sets up and will the periphery parcel of sound outlet with the protecgulum forms fixed connection, the sound production monomer support in the support, the vibrating diaphragm orientation the sound outlet, the support encircles the free week side of sound production sets up and with the sound production monomer forms sealed fixed, the sound production monomer the support the protecgulum the back lid and the gasket encloses into inclosed jointly the back sound chamber.
2. A loudspeaker enclosure as claimed in claim 1, characterized in that an orthographic projection of the recess in the direction of vibration of the diaphragm coincides with the through-opening.
3. A loudspeaker enclosure according to claim 1, wherein the sealing flap further comprises a first reinforcing rib projecting from the recess and connecting opposite sides of the recess.
4. The speaker cabinet of claim 3, wherein the back cover further comprises second ribs located in the through-holes and connected to opposite sides of the through-holes, the second ribs being disposed opposite to and abutting against the first ribs.
5. The speaker box according to claim 1, wherein the front cover comprises a front cover body provided with the sound outlet, a front cover outer side wall extending from an outer periphery of the front cover body to the rear cover direction and fixedly connected with the rear cover, and a front cover inner side wall extending from an inner periphery of the front cover body to the rear cover direction; the support is including being located casing and butt simultaneously are fixed in the protecgulum body with the support body of protecgulum inside wall and by the support body is followed the protecgulum inside wall extends and will the support extension wall of protecgulum inside wall parcel, the support extension wall surrounds sound production free week side set up and with sound production free body forms sealed fixed.
6. The speaker box of claim 2, further comprising a breathable spacer located within the rear acoustic chamber, the breathable spacer being attached to the sound-emitting units and separating the sound-emitting units from the rear acoustic chamber.
7. The speaker box according to claim 6, wherein the air-permeable partition includes a partition body spaced from and facing the rear cover and attached to the sound generating unit, a partition extending portion extending from a peripheral edge of the partition body in a bent manner toward the bracket, and a partition fixing portion extending from an end of the partition extending portion away from the partition body in a bent manner; the isolating piece extending part is arranged at a distance from the shell, and the isolating piece fixing part is fixed on one side of the bracket body close to the rear cover; the breathable partition, the support, the front cover, the rear cover and the sealing sheet jointly enclose a powder filling space, and the powder filling space is used for filling sound-absorbing materials.
8. The speaker box according to claim 7, further comprising a conductive member for connecting the sound generating unit with an external electrical signal, wherein the conductive member comprises a conductive member body supported and fixed at one end of the bracket body near the rear cover, a connecting arm extending from two ends of the conductive member body to the direction of the sound generating unit and fixedly and electrically connected with the sound generating unit, and an extension arm extending from the conductive member body to a direction away from the sound generating unit and penetrating through the housing; one side of the support body, which is close to the rear cover, is sunken to form an accommodating groove, the conductive piece body is arranged in the accommodating groove, the conductive piece body and one side of the support body, which is close to the rear cover, are flush, and the isolating piece fixing part is simultaneously pressed and fixed on the conductive piece body and the support.
9. The speaker box according to claim 8, wherein the rear cover includes a rear cover body disposed opposite to the spacer body with a space therebetween, and a rear cover sidewall bent and extended from a peripheral edge of the rear cover body toward the front cover and fixed in abutment with the front cover outer sidewall, the extension arm penetrates the front cover outer sidewall and the rear cover sidewall at the same time, the through hole is disposed in the rear cover body, and the sealing sheet is fixed to the rear cover body.
10. The speaker box of claim 1, wherein a side of the front cover remote from the rear cover is attached with a rubber ring, and the rubber ring is disposed around the sound outlet.
CN202010880914.7A 2020-08-27 2020-08-27 Loudspeaker box Pending CN112073851A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010880914.7A CN112073851A (en) 2020-08-27 2020-08-27 Loudspeaker box
PCT/CN2020/124383 WO2022041461A1 (en) 2020-08-27 2020-10-28 Loudspeaker box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010880914.7A CN112073851A (en) 2020-08-27 2020-08-27 Loudspeaker box

Publications (1)

Publication Number Publication Date
CN112073851A true CN112073851A (en) 2020-12-11

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CN (1) CN112073851A (en)
WO (1) WO2022041461A1 (en)

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CN208353585U (en) * 2018-01-04 2019-01-08 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN110035354A (en) * 2018-12-29 2019-07-19 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN210093477U (en) * 2019-06-03 2020-02-18 瑞声科技(新加坡)有限公司 Loudspeaker box

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