CN212486709U

CN212486709U - Loudspeaker box

Info

Publication number: CN212486709U
Application number: CN202021233809.6U
Authority: CN
Inventors: 李红; 刘海林; 王武
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-02-05
Anticipated expiration: 2030-06-29
Also published as: WO2022000541A1

Abstract

The utility model provides a loudspeaker box, which comprises a shell and a sounding monomer, wherein the shell is provided with an accommodating space; the sound generating single body is contained in the containing space, and the containing space is divided into a front cavity and a rear cavity by the sound generating single body; the back chamber has first back chamber and second back chamber, the intracavity is filled with and inhales the sound granule behind the second, encloses to become the protruding medial surface that is equipped with of second back chamber can be right inhale the sound piece that the motion of sound granule carries out blocking. Through the protruding sound piece of inhaling that is located of the medial surface of casing the intracavity is gone back to the second, inhale the sound piece can be right inhale the motion of sound granule and block, further reduce because of inhaling the change of the minimum resonant frequency (F0) that the wearing and tearing of sound granule brought, consequently, effectively improved the great speaker box's of virtual sound chamber length acoustic performance.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to a loudspeaker box.

[ background of the invention ]

In order to improve the low-frequency acoustic performance of the loudspeaker box, sound-absorbing particles are filled in an auxiliary sound-generating cavity of the loudspeaker box to form a D-BASS virtual sound cavity, but when the length of the D-BASS virtual sound cavity is longer, researches show that through long-term power type experiments (more than 48H), the sound-absorbing particles (BASS) are seriously abraded due to violent movement of the sound-absorbing particles (BASS), so that the maximum change of the lowest resonance frequency (F0) is caused, the amplitude is reduced, the expansion effect is lost, the low-frequency performance is reduced, and when the sound-absorbing particles are installed on a mobile terminal, the power consumption of the whole machine is high.

Accordingly, there is a need for a loudspeaker enclosure that slows down sound absorbing particle (pass) movement and reduces wear on the pass particles.

[ Utility model ] content

An object of the utility model is to provide a loudspeaker box to solve and violently arouse the serious technical problem of the wear of the band granule because of the band motion.

The technical scheme that one of the purposes of the utility model provides as follows:

a loudspeaker enclosure comprising:

a housing having an accommodating space;

the sound generating unit is accommodated in the accommodating space and divides the accommodating space into a front cavity and a rear cavity;

the back chamber has first back chamber and second back chamber, the intracavity is filled with and inhales the sound granule behind the second, encloses to become the medial surface of second back chamber is equipped with can be right inhale the sound piece that the motion of sound granule goes on blocking.

Furthermore, the second rear cavity is in a strip shape, the number of the sound absorbing pieces is 1,

the sound absorbing piece is arranged in the middle along the length direction of the second rear cavity.

Further, the second rear cavity is rectangular shape, inhale the sound piece and set up to at least two, and at least two inhale the sound piece and follow the length direction interval distribution of second rear cavity.

Furthermore, the sound absorbing piece is blocky and is flatly attached to the inner side surface of the shell.

Further, the second rear cavity is long-strip-shaped, and the sound absorbing piece extends along the width direction of the second rear cavity.

Further, the casing include the upper cover, with the upper cover encloses to close and forms accommodating space's lower cover, sound production monomer and upper cover enclose into the antechamber, sound production monomer, lower cover and upper cover enclose jointly into the back chamber, the speaker box still including ventilative spacing subassembly and certainly the upper cover to the barricade that the lower cover extends, ventilative spacing subassembly is fixed in the barricade and with the barricade will jointly the back chamber is separated for first back chamber with the second back chamber, the upper cover corresponds the second back chamber has been seted up and has been run through the logical groove of upper cover, the upper cover still including cover connect in the apron that leads to the groove, inhale the sound piece and be fixed in the apron orientation the surface of second back chamber.

Further, the cover plate and the breathable isolation assembly are arranged oppositely, and the sound absorbing piece and the breathable isolation assembly are arranged at intervals.

Further, the upper cover includes the bottom plate and certainly the edge of bottom plate to the curb plate that the lower cover extends, logical groove is seted up in the bottom plate, inhale the sound piece with the curb plate interval sets up.

Furthermore, the cover plate is provided with a powder filling hole.

Further, the sound absorbing piece is sound absorbing cotton.

The beneficial effects of the utility model reside in that: the second back cavity forms a D-BASS virtual sound cavity by filling sound-absorbing particles (not shown in the figure) in the second back cavity, so that the acoustic performance of the loudspeaker box is improved. When the length of cavity is longer behind the second, through the protruding sound piece of inhaling that is located of medial surface of casing the intracavity behind the second, inhale the sound piece can be right inhale the motion of sound granule and block, further reduce because of inhaling the change of the minimum resonant frequency (F0) that sound granule wearing and tearing brought, consequently, effectively improved the acoustic performance of the longer speaker box of virtual sound cavity length.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a speaker box according to an embodiment of the present invention;

FIG. 2 is an exploded view of the speaker box of FIG. 1;

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

FIG. 4 is a schematic view of the speaker box of FIG. 1 with the lower cover removed;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 1 in another embodiment.

In the figure:

100. a speaker box; 1. a housing; 10. an accommodating space; 2. a sounding monomer; 101. a front cavity; 102. a rear cavity; 1021. a first rear cavity; 1022. a second rear cavity; 3. a sound absorbing member; 11. an upper cover; 12. a lower cover; 4. a breathable barrier component; 13. retaining walls; 111. a base plate; 112. a side plate; 110. a through groove; 113. a cover plate; 1130. filling a powder hole; 1131. and (7) sealing the cover.

[ detailed description ] embodiments

The present invention will be described in detail with reference to fig. 1 to 5.

Referring to fig. 1 to 5, an embodiment of the present invention provides a speaker box 100, including:

a housing 1 having a housing space 10, the housing 1 having the housing space 10;

the sound generating unit 2 is accommodated in the accommodating space 10, and the accommodating space 10 is divided into a front cavity 101 and a rear cavity 102 by the sound generating unit 2; the rear cavity 102 has a first rear cavity 1021 and a second rear cavity 1022, sound-absorbing particles are filled in the second rear cavity 1022, and a sound-absorbing member 3 capable of blocking the movement of the sound-absorbing particles is protruded on the inner side surface enclosing the second rear cavity 1022.

Through the interior packing of cavity 1022 behind the second inhale the sound granule (not shown in the figure), because inhale the sound granule have porous structure and high specific capacity, the air in the cavity 1022 behind the adsorbable second promotes the air compliance to reach the low frequency resonant frequency who reduces speaker box 100, and then improve the low frequency performance, be used for improving low frequency acoustic performance, make cavity 1022 behind the second form the virtual sound chamber of D-BASS, improve the BASS effect. When the length of the second rear cavity 1022 is large, the sound absorbing member 3 located in the second rear cavity 1022 is protruded on the inner side surface of the housing 1, so that the sound absorbing member 3 can block the movement of the sound absorbing particles, thereby reducing the abrasion caused by the violent movement of the sound absorbing particles, further reducing the change of the lowest resonance frequency (F0) due to the abrasion of the sound absorbing particles, generally reducing the lowest resonance frequency (F0) of 10 to 30HZ, and thus effectively improving the acoustic performance of the speaker box 100 with a long virtual sound cavity length.

Preferably, the second rear cavity 1022 is elongated, and the number of the sound absorbing members 3 is 1. Preferably, when the length of the first rear cavity 1021 is greater than 10mm and less than 20mm, the number of the sound-absorbing members 3 is 1.

When the number of the sound absorbing members 3 is preferably 1, the sound absorbing member 3 is provided at the center in the longitudinal direction of the second rear cavity 1022. So, inhale the space size of sound piece 3 both sides and the quantity of the sound granule of inhaling of both sides and be equal, block the effect to the motion of the sound granule of inhaling of sound piece 3 both sides and be equal, block the effect better to the motion of the sound granule.

Preferably, the second rear cavity 1022 is a long strip, two sound absorbing members 3 are provided, and the two sound absorbing members 3 are distributed along the length direction of the second rear cavity 1022 at intervals. In the same way, the blocking effect on the movement of the sound absorption particles is better. Preferably, when the length of the first rear cavity 1021 is greater than 20mm and less than 30mm, the sound absorbing members 3 are provided in two.

Preferably, the sound absorbing member 3 is block-shaped and is flatly attached to the inner side surface of the housing 1.

Preferably, the second rear cavity 1022 is elongated, and the sound absorbing member 3 extends along the width direction of the second rear cavity 1022. Generally, the sound-absorbing particles are more easily moved along the length direction of the second rear cavity 1022, so that the movement of the sound-absorbing particles is blocked more effectively, thereby reducing the abrasion of the sound-absorbing particles.

Preferably the casing 1 includes the upper cover 11, with the upper cover 11 encloses to close and forms the lower cover 12 of accommodating space 10, sound production monomer 2 and upper cover 11 enclose into front chamber 101, sound production monomer 2, lower cover 12 and upper cover 11 enclose into rear chamber 102 jointly, speaker box 100 still includes ventilative spacer assembly 4 and certainly upper cover 11 to the barricade 13 that lower cover 12 extends, ventilative spacer assembly 4 is fixed in barricade 13 and with barricade 13 will together rear chamber 102 is separated for first rear chamber 1021 with second rear chamber 1022, upper cover 11 corresponds second rear chamber 1022 has seted up and has run through the logical groove 110 of upper cover 11, upper cover 11 still including cover connect in the apron 113 of logical groove 110, sound absorbing member 3 is fixed in apron 113 faces the side of second rear chamber 1022.

Preferably, the cover plate 113 is disposed opposite to the air-permeable partition member 4, and the sound absorbing member 3 is disposed at a distance from the air-permeable partition member 4. Inhale and leave the space between sound piece 3 and the ventilative isolation component 4, be favorable to the circulation of air to avoid blockking the circulation of air because the setting of inhaling sound piece 3, thereby inhale sound piece 3 both can block the motion of inhaling the sound granule, can not influence the circulation of air again, guarantee the bass effect.

Preferably, the upper cover 11 includes a bottom plate 111 and a side plate 112 extending from an edge of the bottom plate 111 toward the lower cover 12, the through groove 110 is opened in the bottom plate 111, and the sound absorbing member 3 is spaced apart from the side plate 112. In a similar way, leave the space between sound piece 3 and curb plate 112, be favorable to the circulation of air to avoid blockking the circulation of air because the setting of inhaling sound piece 3, thereby inhale sound piece 3 both can block the motion of inhaling the sound granule, can not influence the circulation of air again, guarantee the bass effect.

Preferably, the cover plate 113 is provided with a powder filling hole 1130. The sound-absorbing particles are loaded into the second rear cavity 1022 through the powder filling hole 1130, and the speaker box 100 further includes a sealing cover 1131 covering the powder filling hole 1130.

Preferably, the sound absorbing member 3 is sound absorbing cotton.

The above description is only an embodiment of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A loudspeaker enclosure, comprising:

a housing having an accommodating space;

2. A loudspeaker enclosure as claimed in claim 1, wherein: the second rear cavity is rectangular shape, inhale the sound piece and set up to 1, inhale the sound piece and follow the length direction of second rear cavity sets up between two parties.

3. A loudspeaker enclosure as claimed in claim 1, wherein: the second rear cavity is long-strip-shaped, the sound absorbing pieces are arranged into at least two pieces and are distributed at intervals in the length direction of the second rear cavity.

4. A loudspeaker enclosure as claimed in claim 1, wherein: the sound absorbing piece is blocky and is flatly attached to the inner side face of the shell.

5. A loudspeaker enclosure as claimed in claim 1, wherein: the second rear cavity is in a long strip shape, and the sound absorbing piece extends along the width direction of the second rear cavity.

6. A loudspeaker enclosure as claimed in claim 1, wherein: the casing include the upper cover, with the upper cover encloses to close and forms accommodating space's lower cover, sound production monomer and upper cover enclose into the antechamber, sound production monomer, lower cover and upper cover enclose jointly into the back chamber, the speaker box still including ventilative spacing subassembly and certainly the upper cover to the barricade that the lower cover extends, ventilative spacing subassembly is fixed in the barricade and with the barricade will jointly the back chamber is separated for first back chamber with the second back chamber, the upper cover corresponds the second back chamber has been seted up and has been run through the logical groove of upper cover, the upper cover still including cover connect in the apron that leads to the groove, sound absorbing member is fixed in the apron orientation the surface of second back chamber.

7. A loudspeaker enclosure as claimed in claim 6, wherein: the apron with ventilative isolation component sets up relatively, inhale the sound piece with ventilative isolation component interval sets up.

8. A loudspeaker enclosure as claimed in claim 6, wherein: the upper cover includes the bottom plate and certainly the edge of bottom plate to the curb plate that the lower cover extends, logical groove set up in the bottom plate, inhale the sound piece with the curb plate interval sets up.

9. A loudspeaker enclosure as claimed in claim 6, wherein: the cover plate is provided with a powder filling hole.

10. A loudspeaker enclosure as claimed in claim 1, wherein: the sound absorbing piece is made of sound absorbing cotton.