CN111641895A

CN111641895A - Loudspeaker box

Info

Publication number: CN111641895A
Application number: CN202010543187.5A
Authority: CN
Inventors: 丁健华; 吴树文
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2020-09-08
Anticipated expiration: 2040-06-15
Also published as: CN111641895B; WO2021253464A1

Abstract

The invention provides a loudspeaker box which comprises a lower cover, an upper cover, a sounding single body, supporting foam and a ventilating partition, wherein the upper cover is covered on the lower cover and jointly forms an accommodating space; the upper cover comprises an upper cover body covered on the lower cover and a supporting wall which is convexly extended towards the lower cover from the upper cover body, the supporting wall is recessed to form a positioning step, and the sounding single body is supported and fixed on the positioning step; the ventilative separator is located the sound production monomer and is located the main part between lower cover and the sound production monomer and by the peripheral extension wall that the lid body is buckled to the extension of main part, extends the wall and is fixed in support wall just realizes sealedly with the support wall, and the cotton clamp of support bubble is located between sound production monomer and the main part. Compared with the related art, the loudspeaker box disclosed by the invention has the advantages of excellent low-frequency acoustic performance and high assembly efficiency.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of electroacoustic conversion devices, in particular 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 sounding monomer, an annular bracket, supporting foam and a ventilating partition, wherein the lower cover and the upper cover are assembled to form an accommodating space; the support is fixed the upper cover encircles the sound production monomer sets up, the periphery of ventilative separator is fixed in the support, it locates to support the bubble cotton clamp ventilative separator with between the sound production monomer, the sound production monomer reaches ventilative isolation component will jointly accommodating space separates for antechamber and back chamber to but realize the interior full filling structure of back chamber.

However, in the speaker box of the related art, the bracket and the upper cover are assembled and glued first, and then the air-permeable partition is assembled and glued to the bracket, so as to realize the above-mentioned full-filling sound-generating single body isolation scheme. The structure has more assembling and gluing steps, and the assembling and production efficiency is seriously influenced.

Therefore, it is necessary 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 excellent low-frequency acoustic performance and high assembly efficiency.

In order to achieve the above object, the present invention provides a speaker box, which includes a lower cover, an upper cover covering the lower cover and enclosing a receiving space, a sounding unit, a supporting foam and a ventilation spacer, wherein the sounding unit, the supporting foam and the ventilation spacer are accommodated in the receiving space, the upper cover includes an upper cover body covering the lower cover and a supporting wall protruding from the upper cover body to the lower cover direction, the supporting wall is recessed to form a positioning step, and the sounding unit is supported and fixed on the positioning step; ventilative separator locates including the lid the sound production monomer is located the lower cover with main part between the sound production monomer and by the periphery of main part to the extension wall that the upper cover body is buckled and is extended, it is fixed in to extend the wall support wall and with it realizes sealedly to support the wall, it locates to support the bubble cotton clamp the sound production monomer with between the main part.

Preferably, the air-permeable isolating piece and the sound-producing monomer divide the accommodating space into a front cavity and a rear cavity together; the rear cavity is filled with sound-absorbing particles, and the sound-absorbing particles are packaged in the rear cavity by the breathable partition piece.

Preferably, the extension wall includes a first extension wall extending from the periphery of the main body to the upper cover body in a bending manner, and a second extension wall extending from the first extension wall to a position away from the sounding unit in a bending manner, and the second extension wall is fixed to the support wall.

Preferably, the extension wall further includes a third extension wall extending from the second extension wall to the upper cover body in a bent manner, and the third extension wall abuts against the side surface of the support wall.

Preferably, the second extending wall and the supporting wall are sealed through gluing.

Preferably, the support wall comprises a first wall connected to the upper cover body and a second wall connected to a side of the first wall away from the upper cover body, and the positioning step is formed by the first wall recess; the second extension wall is fixed to the second wall, and the wall thickness of the second wall is 0.60 mm.

Preferably, the speaker box further comprises a circuit board, one end of the circuit board is fixedly and electrically connected with the sound generating unit, and the other end of the circuit board extends out of the accommodating space through the rear cavity; the support wall is provided with a yielding groove which is formed by the fact that one end of the main body part is far away from the lower cover in a sunken mode, and the circuit board is connected with the yielding groove in a clamped mode and extends through the yielding groove.

Preferably, the circuit board comprises a first section fixed between the extension wall and the support wall in a clamping manner, a second section extending from two opposite ends of the first section to the sounding monomer and electrically connected with the sounding monomer, and a third section bent from the first section to a position far away from the sounding monomer; the first section is clamped in the abdicating groove, and the third section penetrates through the upper cover and extends out of the accommodating space.

Preferably, the upper cover is further provided with a support wall protruding and extending from the outer side of the upper cover, and the third section is attached to the support wall.

Preferably, one side of the supporting wall close to the third section is provided with a positioning column, the third section is provided with a positioning hole penetrating through the third section, and the positioning column is inserted into the positioning hole.

Compared with the prior art, the loudspeaker box of the invention has the advantages that the sound-producing single body is supported and fixed on the positioning step of the supporting wall, the ventilating partition comprises the main body part which is covered on the sound-producing single body and is arranged between the lower cover and the sound-producing single body, and the extending wall which is bent and extends from the periphery of the main body part to the upper cover body, the main body part is arranged at an interval with the side, close to the lower cover, of the sound-producing single body under the supporting action of the supporting foam, the extending wall is arranged around the periphery of the sound-producing single body, the extending wall is fixed on the supporting wall and is sealed with the supporting wall, so that the accommodating space can be divided into the front cavity and the rear cavity by the ventilating partition together with the sound-producing single body, the rear cavity on the side, far away from the sound-producing single body, of the ventilating partition can be completely filled, through the setting of the supporting wall, the process that the support for supporting the breathable partition piece in the related art is glued and fixed is omitted, the breathable partition piece is directly fixed on the supporting wall in a sealing mode, and production efficiency is effectively improved.

[ description of the drawings ]

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 a portion indicated by C in FIG. 3;

figure 5 is a schematic view in partial cross-section of a derivative embodiment of the loudspeaker enclosure of the present invention;

FIG. 6 is a sectional view taken along line B-B of FIG. 1;

FIG. 7 is a schematic structural diagram of another embodiment of a powder filling hole arrangement in a loudspeaker enclosure according to the present invention;

fig. 8 is a schematic structural diagram of another embodiment of the arrangement of the powder filling hole in the loudspeaker box according to the invention.

[ detailed description ] embodiments

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1-4 and 6, the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound generating unit 3, a supporting foam 5 and a ventilation spacer 4. The lower cover 1 is arranged on the upper cover 2 and jointly forms an accommodating space 10.

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 toward the lower cover 1, and a sound guide channel 23 formed in the upper cover body 21, where the support wall 22 is recessed to form a positioning step 220.

More specifically, the support wall 22 includes a first wall 221 connected to the upper cover body 21 and a second wall 222 connected to a side of the first wall 221 away from the upper cover body 21, the positioning step 220 is formed by recessing the first wall 221, and the sound-emitting unit 3 is supported and fixed on the positioning step 220. The sounding single body 3 is accommodated in the accommodating space 10 and supported on the upper cover 2.

The sounding unit 3 comprises a basin frame 31 and vibration systems 32 respectively fixed on two opposite sides of the basin frame 31. The sounding single body 3 is supported and fixed on the positioning step 220 of the supporting wall 22 through the basin frame 31. In this embodiment, the positioning step 220 is glued so that the periphery of the basin frame 31 is fixed to the support wall 22 by gluing and sealed.

The breathable partition piece 4 is accommodated in the accommodating space 10 and is positioned between the sounding single body 3 and the lower cover 1, and the accommodating space 10 is divided into a front cavity 101 and a rear cavity 102 by the breathable partition piece 4 and the sounding single body 3.

The front cavity 101 is used for sound production, and the sound guide channel 23 forms the front cavity 101 into a side sound production structure. The rear cavity 102 is filled with sound-absorbing particles (not shown), and the air-permeable partition 4 encapsulates the sound-absorbing particles in the rear cavity 102 to form a DBASS virtual sound cavity for further improving low-frequency acoustic performance.

The vibration system 32 and the upper cover body 21 form a front sound cavity 6 at intervals, 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 production structure. The rear cavity 102 is enclosed by the breathable partition 4, the upper cover 2 and the lower cover 1 together, and is used for improving low-frequency acoustic performance.

Specifically, the ventilation spacer 4 includes a main body portion 41 covering the sound generating unit 3 and disposed between the lower cover 1 and the sound generating unit 3, and an extending wall 42 extending from the periphery of the main body portion 41 to the upper cover body 21 in a bending manner, the extending wall 42 is disposed around the periphery of the sound generating unit 3, and the extending wall 42 and the second wall 222 of the support wall 22 realize sealing; the supporting foam 5 is clamped between the main body part 41 and the sounding unit 3, and the main body part 41 and the sounding unit 3 close to the lower cover 1 are arranged at intervals under the supporting action of the supporting foam 5; the breathable isolating piece 4, the supporting foam 5, the sound generating unit 3 and the upper cover 2 jointly enclose an inner sound cavity 103, and the inner sound cavity 103 is in air communication with the rear cavity 102 through the extending wall 42. Here, ventilative separator 4 forms spatial structure, and will sound production monomer 3 with back chamber 102 is separated, prevents to inhale the sound granule and follows back chamber 102 gets into sound production monomer 3 is inside and influence the sound production performance, the effectual sound production reliability that has improved loudspeaker box 100.

More specifically, in the present embodiment, the supporting foam 5 has an i-shaped structure. The support foam 5 and the sounding single body 3 are sealed by gluing between the side close to the lower cover 1 and the main body part 41.

The structure enables the rear cavity 102, far away from the sounding monomer 3, of the breathable partition 4 to be completely filled with sound-absorbing particles to serve as a D-BASS virtual sound cavity, so that the filling efficiency of the sound-absorbing particles of the rear cavity 102 is improved to a great extent, and the low-frequency acoustic performance of the loudspeaker box 100 is effectively improved. Meanwhile, through the arrangement of the supporting wall 22, the process of gluing and fixing the bracket for supporting the breathable partition in the related art is omitted, and the breathable partition 4 is directly fixed on the second wall 222 of the supporting wall 22 in a sealing manner, so that the assembly process is simplified, and the production efficiency is effectively improved.

Further, the extension wall 42 is a structure that is continuously bent and extended, and includes a first extension wall 421 that is bent and extended from the periphery of the main body 41 to the upper cover body 21, and a second extension wall 422 that is bent and extended from the first extension wall 421 to a position away from the sound-generating unit 3, and more specifically, in this embodiment, the second extension wall 422 is fixed to the support wall 22 and forms a seal with the support wall 22, and the second extension wall 422 is a flanging structure, so that the connection area between the air-permeable partition 4 and the support wall 22 can be effectively increased, and the reliability of the sealing and fixing of the two can be ensured.

It should be noted that the sealing manner between the second extending wall 422 and the supporting wall 22 is not limited, for example, in the present embodiment, the sealing between the second extending wall 422 and the second wall 222 of the supporting wall 22 is performed by gluing; in order to ensure the gluing area between the second extending wall 422 and the supporting wall 22, the thickness of the glue between the second extending wall 422 and the supporting wall 22 needs to be ensured, the second extending wall 422 needs to have a certain width, and the second wall 222 of the supporting wall 22 has a certain wall thickness, which can be set according to practical situations, here, a preferable scheme is mentioned, the wall thickness of the second wall 222 is 0.60mm, and the glue between the second wall 222 and the second extending wall 422 can be 0.60mm, so as to ensure the reliability of the gluing and sealing between the second extending wall 422 and the second extending wall 222.

Furthermore, as a more preferred embodiment, as shown in fig. 5, the extension wall 42a of the air-permeable partition 4a further includes a third extension wall 423a extending from the second extension wall 422a to the upper cover body 21a in a bending manner, and the third extension wall 423a abuts against the side surface of the support wall 22a, so that the connection area between the air-permeable partition 4a and the support wall 22a is further increased, and the reliability of sealing and fixing between the two is higher.

The loudspeaker box 100 further comprises a circuit board 7, one end of the circuit board 7 is fixedly and electrically connected with the sound generating unit 3, and the other end of the circuit board 7 extends out of the accommodating space 10 through the rear cavity 102 to introduce an external electric signal into the sound generating unit 3; the supporting wall 22 is provided with a yielding groove 2201 formed by recessing the end of the supporting wall close to the main body portion 41 in the direction away from the lower cover 1, and the circuit board 7 is connected to the yielding groove 2201 and extends from the yielding groove 2201 to the outside of the accommodating space 10.

Specifically, the circuit board 7 includes a first section 71 sandwiched and fixed between the extension wall 42 and the support wall 22 and the sound generating unit 3, a second section 72 extending from two opposite ends of the first section 71 to the sound generating unit 3 and electrically connected to the sound generating unit 3, and a third section 73 bent from the first section 71 to a position away from the sound generating unit 3; the first section 71 is clamped in the receding groove 2201, and the third section 73 penetrates through the upper cover 2 and extends to the outside of the accommodating space 10 for connecting an external electrical signal.

In this embodiment, the upper cover 2 is further provided with a support wall 24 protruding from the outer side thereof, and the third section 73 is attached to the support wall 24, so as to support the third section 73 and facilitate connection with an external electrical signal source.

Preferably, a positioning column 241 is arranged on one side of the supporting wall 24 close to the third section 73, the third section 73 is provided with a positioning hole 731 penetrating through the third section, and the positioning column 241 is inserted into the positioning hole 731 to position the third section 73, so that on one hand, the assembly efficiency is improved, on the other hand, the third section 73 is prevented from moving, and the stability of signal connection between the third section 73 and an external power supply is improved.

The loudspeaker box 100 is further provided with a powder filling hole 9 and a sealing cover 91 covering the powder filling hole 9, wherein the powder filling hole 9 is communicated with the rear cavity 102 and is used for filling sound absorption particles into the rear cavity 102.

As shown in fig. 2, the powder filling holes 9 include at least two holes, and are respectively disposed on the upper cover 2 and the lower cover 1.

Of course, the arrangement of the powder filling hole 9 is not limited to the above manner, and may also be separately arranged:

as shown in fig. 7, the powder filling hole 409 is disposed through the upper cover 402, and the sealing cover 491 is disposed on the powder filling hole 409.

As shown in fig. 8, in the speaker box 500, the powder filling hole 509 is disposed through the lower cover 501, and the sealing cover 591 is disposed on the powder filling hole 509.

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 lower cover, an upper cover, a sound generating unit, supporting foam and a ventilating partition, wherein the upper cover is covered on the lower cover and jointly forms an accommodating space, the sound generating unit, the supporting foam and the ventilating partition are accommodated in the accommodating space; ventilative separator locates including the lid the sound production monomer is located the lower cover with main part between the sound production monomer and by the periphery of main part to the extension wall that the upper cover body is buckled and is extended, it is fixed in to extend the wall support wall and with it realizes sealedly to support the wall, it locates to support the bubble cotton clamp the sound production monomer with between the main part.

2. The speaker cabinet as claimed in claim 1, wherein the air-permeable partition and the sound-generating unit together partition the accommodating space into a front cavity and a rear cavity; the rear cavity is filled with sound-absorbing particles, and the sound-absorbing particles are packaged in the rear cavity by the breathable partition piece.

3. The speaker box according to claim 1, wherein the extension wall includes a first extension wall extending from a peripheral edge of the main body portion to the upper cover body, and a second extension wall extending from the first extension wall to a position away from the sound-generating unit, and the second extension wall is fixed to the support wall.

4. A loudspeaker enclosure according to claim 3, wherein the extension wall further comprises a third extension wall extending from the second extension wall to the upper cover body, the third extension wall abutting against the side surface of the support wall.

5. A loudspeaker enclosure according to claim 3, wherein the second extension wall is sealed to the support wall by gluing.

6. A loudspeaker enclosure according to claim 5, wherein the support wall comprises a first wall connected to the cover body and a second wall connected to the first wall on a side remote from the cover body, the positioning step being formed by the first wall recess; the second extension wall is fixed to the second wall, and the wall thickness of the second wall is 0.60 mm.

7. The loudspeaker box of claim 2, further comprising a circuit board, wherein one end of the circuit board is fixedly and electrically connected with the sound generating unit, and the other end of the circuit board extends out of the accommodating space through the rear cavity; the support wall is provided with a yielding groove which is formed by the fact that one end of the main body part is far away from the lower cover in a sunken mode, and the circuit board is connected with the yielding groove in a clamped mode and extends through the yielding groove.

8. The loudspeaker box of claim 7, wherein the circuit board comprises a first section fixed between the extension wall and the support wall, a second section extending from opposite ends of the first section to the sound generating unit and electrically connected to the sound generating unit, and a third section bent from the first section to a position away from the sound generating unit; the first section is clamped in the abdicating groove, and the third section penetrates through the upper cover and extends out of the accommodating space.

9. The speaker box of claim 8, wherein the top cover further has a support wall protruding from the outer side of the top cover, and the third section is attached to the support wall.

10. The speaker box as claimed in claim 9, wherein a positioning post is disposed on a side of the supporting wall near the third section, the third section has a positioning hole penetrating therethrough, and the positioning post is inserted into the positioning hole.