CN212519304U

CN212519304U - Loudspeaker box

Info

Publication number: CN212519304U
Application number: CN202021233681.3U
Authority: CN
Inventors: 李红
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-02-09
Anticipated expiration: 2030-06-29
Also published as: WO2022000544A1

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 cavity has first back cavity and second back cavity, the sound granule is inhaled in the intussuseption of second back cavity, the medial surface of second back cavity is provided with can be right inhale the motion of sound granule and carry out the disconnected muscle that blocks. The blocking ribs which can block the movement of the sound absorbing particles are arranged in the second rear cavity, so that the change of the lowest resonance frequency (F0) caused by the abrasion of the sound absorbing particles is further reduced, and the acoustic performance of the loudspeaker box with the longer virtual sound cavity length is effectively improved.

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 cavity has first back cavity and second back cavity, the sound granule is inhaled in the intussuseption of second back cavity, the medial surface of second back cavity is provided with can be right inhale the motion of sound granule and carry out the disconnected muscle that blocks.

Further, the number of the blocking ribs is 1 or at least 2.

Further, the blocking rib is in a long strip shape.

Furthermore, the second rear cavity is in a long strip shape, and the blocking ribs extend 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 isolation component and certainly one in the upper cover with the barricade that extends to another person in the lower cover, ventilative isolation component 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, ventilative isolation component connect in two separate relative sides of barricade, the bar that blocks connect in the bar that blocks.

Furthermore, one side of the blocking rib departing from the breathable isolation assembly and the inner side face of the shell are arranged at intervals.

Furthermore, the upper cover is provided with a through groove penetrating through the lower cover corresponding to the second rear cavity, the through groove is covered with a cover plate, and the cover plate is provided with a powder filling hole.

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 the second rear cavity is longer, a blocking rib is arranged on the inner side surface of the second rear cavity in a protruding mode, the blocking rib can block the movement of the sound absorbing particles, the change of the lowest resonance frequency (F0) caused by the abrasion of the sound absorbing particles is further reduced, and therefore the acoustic performance of the loudspeaker box with the longer virtual sound cavity length is effectively improved.

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

FIG. 3 is a schematic view of the speaker box of FIG. 1 with the lower cover removed;

fig. 4 is a schematic view of the structure of fig. 3 with the air-permeable separating assembly removed.

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. blocking the ribs; 11. an upper cover; 12. a lower cover; 4. a breathable barrier component; 13. retaining walls; 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 4.

Referring to fig. 1 to 4, 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 is provided with a first rear cavity 1021 and a second rear cavity 1022, sound-absorbing particles are filled in the second rear cavity 1022, and blocking ribs 3 which can block the movement of the sound-absorbing particles are convexly arranged on the inner side surface of the second rear cavity 1022, so that the lowest resonance frequency caused by the abrasion of the sound-absorbing particles is reduced.

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, 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 long, the blocking rib 3 is protruded on the inner side surface of the second rear cavity 1022, so that the blocking rib 3 can block the movement of the sound-absorbing particles, thereby reducing the abrasion of the sound-absorbing particles, further reducing the change of the lowest resonance frequency (F0) caused by 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 number of the blocking ribs 3 is 1 or at least 2. If the muscle 3 sets up to 1, preferred muscle 3 sets up in the middle of the length direction of chamber 1022 behind the second, if the muscle 3 sets up to 2 or more than 2, each blocks 3 equidistance settings of muscle.

Preferably, the blocking rib 3 is long.

Preferably, the second rear cavity 1022 is elongated, and the blocking rib 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 casing 1 includes upper cover 11, with upper cover 11 encloses to close and forms accommodating space 10's lower cover 12, sound production monomer 2 and upper cover 11 enclose into antechamber 101, sound production monomer 2, lower cover 12 and upper cover 11 enclose into back chamber 102 jointly, speaker box 100 still include ventilative spacer assembly 4 and certainly upper cover 11 with retaining wall 13 that one extends to another in the lower cover 12, ventilative spacer assembly 4 is fixed in retaining wall 13 and with retaining wall 13 will jointly back chamber 102 is separated for first back chamber 1021 with second back chamber 1022, block muscle 3 connect in two relative sides of separating of retaining wall 13, ventilative spacer assembly 4 connect in block muscle 3.

Preferably, one side of the blocking rib 3 departing from the air-permeable isolating component 4 is arranged at an interval with the inner side surface of the shell 1. So, block and leave the space between muscle 3 and the casing 1, be favorable to the circulation of air to avoid blockking the circulation of air because the setting of blocking muscle 3, thereby block muscle 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 is provided with a through slot 110 penetrating through the upper cover 11 corresponding to the second rear cavity 1022, and the upper cover 11 of the through slot 110 is connected with a cover plate 113. The cover plate 113 is provided with a powder filling hole 1130, sound absorbing particles are filled 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 length of the second back cavity 1022 is greater than or equal to 10 mm.

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 number of the blocking ribs is 1 or at least 2.

3. A loudspeaker enclosure as claimed in claim 1, wherein: the blocking ribs are in a long strip shape.

4. A loudspeaker enclosure as claimed in claim 1, wherein: the second rear cavity is in a long strip shape, and the blocking ribs extend along the width direction of the second rear cavity.

5. 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 isolation component and certainly one in the upper cover with the barricade that extends to another person in the lower cover, ventilative isolation component 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, block the muscle connect in two of barricade separate relative sides, ventilative isolation component connect in block the muscle.

6. A loudspeaker enclosure as claimed in claim 5, wherein: one side of the blocking rib departing from the breathable isolation assembly and the inner side face of the shell are arranged at intervals.

7. A loudspeaker enclosure as claimed in claim 5, wherein: the upper cover is provided with a through groove penetrating through the upper cover corresponding to the second rear cavity, the through groove is covered with a cover plate, and the cover plate is provided with a powder filling hole.