CN112073855A

CN112073855A - Loudspeaker box

Info

Publication number: CN112073855A
Application number: CN202010880945.2A
Authority: CN
Inventors: 吴军; 印兆宇; 魏威; 刘忠原
Original assignee: AAC Optoelectronic Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Current assignee: AAC Optoelectronic Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-12-11
Anticipated expiration: 2040-08-27
Also published as: CN112073855B; WO2022041442A1

Abstract

The invention provides a loudspeaker box which comprises a sounding monomer, a breathable rubber ring component and a shell made of a metal material, wherein the shell comprises a front cover, a rear cover and a first support; the first bracket is provided with a through hole, and the sound generating monomer faces the through hole and is supported and fixed on the first bracket; the rear cover is covered and fixed on one side of the first support far away from the front cover, and the first support, the sounding monomer and the rear cover jointly enclose a rear sound cavity; the side wall of the front cover is supported and fixed on the first support, the front cover plate is spaced from the sounding monomer, the first support, the front cover and the sounding monomer jointly enclose a front sound cavity, and the front sound cavity is communicated with the outside through the sound outlet to form a side sounding structure; the ventilative rubber ring subassembly laminating is fixed in one side and the protecgulum lateral wall that the back lid was kept away from to the protecgulum and covers the sound outlet completely, and the sound outlet is through ventilative rubber ring subassembly and outside air intercommunication. 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 includes a casing, a sound-producing unit and a breathable rubber ring assembly, wherein the sound-producing unit is fixedly accommodated in the casing, the sound-producing unit includes a vibrating diaphragm for vibrating sound, the casing is made of a metal material, the casing includes a front cover and a rear cover which are respectively located at two opposite sides of the sound-producing unit along a vibration direction of the vibrating diaphragm, and a first bracket which is fixed between the front cover and the rear cover, the front cover includes a front cover plate which is arranged opposite to the rear cover, and a front cover side wall which is bent and extended from the periphery of the front cover plate to the direction of the rear cover, and the front cover side wall is provided with a sound outlet which penetrates through the front cover side wall; the first support is provided with a through hole penetrating through the first support, and one side of the sound generating single body, provided with the vibrating diaphragm, faces the through hole and is supported and fixed on the first support; the rear cover is covered and fixed on one side of the first support far away from the front cover, and the first support, the sounding unit and the rear cover jointly form a closed rear sound cavity; the side wall of the front cover is supported and fixed on one side of the first support, which is far away from the rear cover, the front cover plate and the sounding monomer are arranged at intervals, the first support, the front cover and the sounding monomer jointly enclose a front sound cavity, and the front sound cavity is communicated with the outside through the sound outlet to form a side sounding structure; the breathable rubber ring component is fixedly attached to one side, away from the rear cover, of the front cover plate and the side wall of the front cover and completely covers the sound outlet, and the sound outlet is communicated with the outside air through the breathable rubber ring component.

Preferably, ventilative rubber ring subassembly includes ventilative piece and all is cyclic annular and laminate respectively and be fixed in the peripheral first rubber ring and the second rubber ring of the relative both sides of ventilative piece, ventilative piece covers completely the sound outlet, first rubber ring laminates respectively and is fixed in the front shroud with the protecgulum lateral wall, the laminating of second rubber ring is fixed in ventilative piece is kept away from one side of first rubber ring.

Preferably, the first rubber ring and the second rubber ring are both made of double-sided adhesive tape.

Preferably, first support including be annular support body, by the outer peripheral edges of support body to the back lid direction is buckled the support lateral wall that extends and by the internal peripheral edges of support body are kept away from back lid direction is buckled and is extended and enclose the support step of opening, the sound production monomer supports and is fixed in support step is close to one side of back lid, back lid is established and is fixed in the support lateral wall, the front lid lateral wall supports and is fixed in support step is kept away from one side of back lid.

Preferably, the speaker box is still including being located the second support and the ventilative separator of making by plastics of back sound intracavity, the second support is fixed in the support body encircles the free week side of sound production sets up, ventilative separator is fixed in the second support will the sound production monomer is followed the separation in the back sound intracavity.

Preferably, the rear cover includes a rear cover body and a rear cover side wall bent and extended from a periphery of the rear cover body toward the front cover, and the rear cover side wall is fixed to the bracket side wall.

Preferably, the breathable isolating piece comprises an isolating piece body which is opposite to the rear cover body 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 and the side wall of the front cover are arranged at intervals, and the isolating piece fixing part is attached and fixed to one side, close to the rear cover, of the second support; the breathable partition, the first support, the second support and the rear cover 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 second bracket 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 simultaneously penetrates through the side wall of the rear cover and the side wall of the bracket; one side of the second support, 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 second support, which is close to the rear cover, are flush, and the extending part of the isolating piece is pressed and fixed on the conductive piece body and the second support.

Preferably, the first bracket and the second bracket are integrally formed by injection molding.

Compared with the prior art, the front cover, the rear cover and the first support of the shell are all made of metal materials, and the sounding single body is supported and fixed on the first support; the rear cover and the front cover side wall of the front cover are respectively covered and fixed on two opposite sides of the first support, in the structure, the metal first support is combined with the metal rear cover, the metal front cover is combined with the metal first support, and on the premise of ensuring the structural strength of the shell, the shell can be designed to be thinner relative to an all-plastic shell structure, so that the volume of a cavity in the shell is greatly improved, the volume of a rear sound cavity formed by a sounding monomer and the shell in a surrounding mode is effectively increased, and the acoustic performance, particularly the low-frequency acoustic performance of the loudspeaker box is improved. In addition, the loudspeaker box is fixedly attached to one side of the front cover plate, which is far away from the rear cover, and the side wall of the front cover, and completely covers the sound outlet, and the sound outlet is communicated with the outside air through the breathable rubber ring assembly.

[ 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 an exploded perspective view of a portion of the speaker box of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view of the portion B of FIG. 3;

FIG. 5 is a schematic perspective view of an air permeable rubber ring assembly of a speaker box according to the present invention

Fig. 6 is an exploded perspective view of a portion of the air permeable rubber ring assembly of the speaker box of the present invention.

[ 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. 1-6, the present invention provides a speaker box 100, which includes a housing 1, a sound generating unit 2 having a diaphragm 21 and a gas permeable rubber ring assembly 6, wherein the sound generating unit 2 is fixedly accommodated in the housing 1.

The shell 1 is made of metal material. The casing 1 includes a front cover 11 and a rear cover 12 respectively located at two opposite sides of the sound generating unit 2 along the vibration direction of the diaphragm 21, and a first bracket 13 fixed between the front cover 11 and the rear cover 12.

Specifically, the front cover 11 includes a front cover 111 disposed opposite to the rear cover 12, and a front cover sidewall 112 extending from a peripheral edge of the front cover 111 in a direction of the rear cover 12.

The front cover side wall 112 is provided with a sound outlet 10 penetrating therethrough.

The front cover 111 and the front cover side wall 112 may be separated from each other or may be integrally manufactured. In this embodiment, the front cover 111 and the front cover side wall 112 are integrally formed.

The front cover side wall 112 is supported and fixed on one side of the first support 13 far away from the rear cover 12, the front cover plate 111 and the sound generating unit 2 are arranged at intervals, and the first support 13, the front cover 11 and the sound generating unit 2 jointly form a front sound cavity 101. The diaphragm 21 is accommodated in the front acoustic cavity 101. The sound outlet 10 is located on the front cover side wall 112. The sound outlet 10 is communicated with the front sound cavity 101 and the outside to form a side sound production structure, and the structure improves the smoothness of air generated by side sound production and the outside, so that the audio quality of the loudspeaker box 100 is improved.

The rear cover 12 includes a rear cover main body 121 and a rear cover sidewall 122 extending from the periphery of the rear cover main body 121 to be bent toward the front cover 11.

The rear cover 12 is covered and fixed on one side of the first bracket 13 far away from the front cover 11, and forms a sealing fixation. Specifically, the rear cover side wall 122 is fixed to a side of the first bracket 13 away from the front cover 11. The sound generating unit 2, the first support 13 and the rear cover 12 together enclose a closed rear sound cavity 102.

In this embodiment, the rear cover 12 is welded to the first bracket 13, the front cover sidewall 11 is welded to the first bracket 13, and the front cover 11 and the rear cover 12 can be designed to be thinner and have more reliable fixing strength compared to the plastic structure in the prior art.

In the above structure, the front cover 11, the rear cover 12 and the combined structure of the first support 13 are made of metal materials, the first support 13 made of metal materials is fixed with the rear cover 11 to support the fixed sounding unit 2 and form the rear sound cavity 102, and then the first support 13 made of metal materials is fixed with the front cover 11 to form the front sound cavity 101, so that on the premise of ensuring the structural strength of the casing 1, the combined structure can be designed to be thinner and can be used for effectively assembling the sounding unit 2, thereby greatly improving the cavity volume in the casing 1, effectively increasing the volume of the sounding unit 2 and the rear sound cavity 10 surrounded by the casing 1, and further improving the acoustic performance, particularly the low-frequency acoustic performance, of the speaker box 100.

The first bracket 13 includes a through hole 130 penetrating therethrough, an annular bracket body 131, a bracket sidewall 132 extending from an outer peripheral edge of the bracket body 131 to the rear cover 12 in a bent manner, and a supporting step 133 extending from an inner peripheral edge of the bracket body 131 to a direction away from the rear cover 12 in a bent manner and enclosing the through hole 130.

The sound production monomer 2 is equipped with one side orientation of vibrating diaphragm 21 opening 130 and support are fixed in first support 13, first support 13 with sound production monomer 2 forms sealed fixed.

The rear cover 12 is covered and fixed on the bracket side wall 132, and specifically, the rear cover side wall 122 is fixed on the bracket side wall 132. The front cover sidewall 112 is supported and fixed on a side of the supporting step 133 away from the rear cover 12. The structure is strong, and compared with a full plastic shell structure, the structure can be designed to be thinner, and the sound generating units 2 can be assembled effectively, so that the cavity volume of the rear cover 12 and the first support 13 is improved to a great extent, the volume of the rear sound cavity 10 formed by the sound generating units 2 and the rear cover 12 is increased effectively, and the acoustic performance, particularly the low-frequency acoustic performance of the loudspeaker box 100 is improved.

The diaphragm 21 of the sound generating unit 2 is used for generating sound through vibration. Specifically, the diaphragm 21 includes a vibrating portion 211, a folded ring portion 212 bent and extended from a periphery of the vibrating portion 211, and a diaphragm fixing portion 213 bent and extended from the folded ring portion 212 in a direction away from the vibrating portion 211. The sounding unit 2 is supported and fixed on one side of the supporting step 133 close to the rear cover 12. Specifically, the supporting step 133 is supported and fixed to the diaphragm fixing portion 213, so that the first bracket 13, the diaphragm 21, the first bracket 13 and the front cover 11 jointly enclose the front acoustic cavity 101, and the loudspeaker box 100 is simple to assemble and high in reliability.

The loudspeaker enclosure further comprises a second support 3 made of plastic located inside the rear sound chamber 102. The second bracket 3 is supported and fixed on the bracket body 131 and arranged around the periphery of the sounding unit 2.

The first bracket 13 and the second bracket 3 may be manufactured separately and fixed together, but the present invention is not limited thereto, and in the present embodiment, the first bracket 13 and the second bracket 3 are formed by injection molding integrally. This configuration makes the speaker box 100 simpler to manufacture and easier to assemble.

To further improve the low frequency acoustic performance of the loudspeaker enclosure 100, the loudspeaker enclosure 100 further comprises a breathable partition 4 located within the rear acoustic cavity 102. The air-permeable partition 4 is fixed to the second bracket 3 and partitions the sound-generating unit 2 from the rear sound cavity 102, so that the rear sound cavity 102 can be filled with sound-absorbing material.

Specifically, the ventilation spacer 4 includes a spacer body 41 opposite to the back cover body 121 at an interval and attached to the sound generating unit 2, a spacer extension portion 42 extending from the periphery of the spacer body 41 to the support 3 in a bending manner, and a spacer fixing portion 43 extending from the spacer extension portion 42 away from one end of the spacer body 41 in a bending manner. The spacer extensions 42 are spaced from the front cover side walls 112. The spacer fixing part 43 is a side of the second bracket 3 close to the rear cover 12. Ventilative separator 4, first support 13, second support 3 and back lid 12 enclose jointly and enclose into 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 supporting and fixed on the second frame 3 near one end of the back cover 12, a connecting arm 52 extending from two ends of the conductive device body 51 to the sounding single body 2 and electrically connected to the sounding single body 2, and an extending arm 53 extending from the conductive device body 51 to the direction far away from the sounding single body 2 and simultaneously penetrating through the back cover side wall 122 and the frame side wall 132.

In this embodiment, the extension arm 53 penetrates both the front cover sidewall 112 and the rear cover sidewall 122. The structure is convenient to assemble, and the position penetrating through the front cover outer side wall 112 and the position penetrating through the rear cover side wall 122 can be used as assembly positioning in advance, so that the assembly efficiency is improved.

In order to form effective sealing when the air-permeable partition 4 and the bracket 3 are fixed, and ensure that the sound-absorbing material in the powder filling space does not enter the sound-emitting unit 2 to affect the performance thereof, in the present embodiment, one side of the second bracket 3 close to the rear cover 12 is recessed to form a receiving groove 30. The conductive member body 51 is disposed in the accommodating groove 30 such that the conductive member body 51 is flush with a side of the second bracket 3 close to the rear cover 12. The spacer extension 42 is pressed and fixed to the conductive member body 51 and the second bracket 3.

To further improve the reliability of the loudspeaker enclosure 100, said loudspeaker enclosure 100 further comprises a gas permeable rubber ring assembly 6.

Specifically, the breathable rubber ring assembly 6 includes a breathable member 61, and a first rubber ring 62 and a second rubber ring 63 which are both annular and respectively attached and fixed to the peripheries of two opposite sides of the breathable member 61.

The breathable rubber ring component 6 completely covers the sound outlet 10, and the sound outlet 10 is communicated with the outside air through the breathable rubber ring component 6. Specifically, the air-permeable member 61 completely covers the sound outlet 10. This structure makes the sound outlet 10 communicate with the outside through the air-permeable rubber ring component 6, and simultaneously, can prevent foreign matters from entering the front sound cavity 101, thereby improving the reliability of the speaker box 100.

In this embodiment, the air permeable member 61 is a mesh.

The air permeable rubber ring component 6 is attached and fixed to one side of the front cover plate 111 far away from the rear cover 12 and the front cover side wall 112. Specifically, the first rubber ring 62 is respectively attached and fixed to the front cover plate 111 and the front cover side wall 112. The second rubber ring 63 is attached and fixed to one side, away from the first rubber ring 62, of the air-permeable member 61. The second rubber ring 63 is used for sealing with the whole loudspeaker box 100, so that the sealing reliability of the loudspeaker box 100 is improved. In this embodiment, the first rubber ring 62 and the second rubber ring 63 are both made of double-sided adhesive tape. Of course, the present invention is not limited thereto, and other gels that can be pasted on both sides are also possible.

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

1. A loudspeaker box comprises a shell and a sound production unit which is fixedly contained in the shell, wherein the sound production unit comprises a vibrating diaphragm used for vibrating sound production, the loudspeaker box is characterized in that the shell is made of a metal material, the shell comprises a front cover and a rear cover which are respectively positioned at two opposite sides of the sound production unit along the vibration direction of the vibrating diaphragm and a first support which is fixed between the front cover and the rear cover, the front cover comprises a front cover plate which is opposite to the rear cover and a front cover side wall which is bent and extended from the periphery of the front cover plate to the direction of the rear cover, and the front cover side wall is provided with a sound outlet which penetrates through the front cover side wall; the first support is provided with a through hole penetrating through the first support, and one side of the sound generating single body, provided with the vibrating diaphragm, faces the through hole and is supported and fixed on the first support; the rear cover is covered and fixed on one side of the first support far away from the front cover, and the first support, the sounding unit and the rear cover jointly form a closed rear sound cavity; the side wall of the front cover is supported and fixed on one side of the first support, which is far away from the rear cover, the front cover plate and the sounding monomer are arranged at intervals, the first support, the front cover and the sounding monomer jointly enclose a front sound cavity, and the front sound cavity is communicated with the outside through the sound outlet to form a side sounding structure; the loudspeaker box further comprises a breathable rubber ring assembly, the breathable rubber ring assembly is attached to and fixed on one side of the rear cover, far away from the front cover plate, of the front cover side wall and completely covers the sound outlet, and the sound outlet is communicated with the outside air through the breathable rubber ring assembly.

2. The loudspeaker box according to claim 1, wherein the air permeable rubber ring assembly comprises an air permeable member, and a first rubber ring and a second rubber ring which are both annular and respectively attached and fixed to the peripheries of two opposite sides of the air permeable member, the air permeable member completely covers the sound outlet, the first rubber ring is respectively attached and fixed to the front cover plate and the side wall of the front cover, and the second rubber ring is attached and fixed to one side of the air permeable member, which is far away from the first rubber ring.

3. A loudspeaker enclosure according to claim 2, wherein the first and second rubber rings are both made of double-sided adhesive.

4. The speaker box according to claim 1, wherein the first bracket includes a ring-shaped bracket body, a bracket sidewall extending from an outer periphery of the bracket body to the rear cover, and a supporting step extending from an inner periphery of the bracket body to the rear cover and enclosing the opening, the sound generating unit is supported and fixed on a side of the supporting step close to the rear cover, the rear cover is fixed on the bracket sidewall, and the front cover sidewall is supported and fixed on a side of the supporting step far from the rear cover.

5. The speaker box according to claim 4, further comprising a second support made of plastic and located in the rear sound cavity, wherein the second support is supported and fixed to the support body and disposed around the periphery of the sound-emitting unit, and a breathable spacer fixed to the second support and separating the sound-emitting unit from the rear sound cavity.

6. The speaker box according to claim 5, wherein the rear cover includes a rear cover body and a rear cover side wall extending from a peripheral edge of the rear cover body to be bent toward the front cover, and the rear cover side wall is fixed to the bracket side wall.

7. The speaker box according to claim 6, wherein the air-permeable partition includes a partition body spaced apart from and facing the rear cover body 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 and the side wall of the front cover are arranged at intervals, and the isolating piece fixing part is attached and fixed to one side, close to the rear cover, of the second support; the breathable partition, the first support, the second support and the rear cover 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 second bracket 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 extending arm extending from the conductive member body to a direction away from the sound generating unit and simultaneously penetrating through the side wall of the rear cover and the side wall of the bracket; one side of the second support, 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 second support, which is close to the rear cover, are flush, and the extending part of the isolating piece is pressed and fixed on the conductive piece body and the second support.

9. A loudspeaker enclosure according to claim 5, wherein the first and second brackets are integrally injection moulded.