CN211321498U

CN211321498U - Loudspeaker box

Info

Publication number: CN211321498U
Application number: CN201922182011.7U
Authority: CN
Inventors: 高尚; 王程良
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-07
Filing date: 2019-12-07
Publication date: 2020-08-21
Anticipated expiration: 2029-12-07

Abstract

The utility model provides a loudspeaker box, the sound production monomer divides the accommodating space into front chamber and back chamber, the back chamber is divided into first back chamber and second back chamber by the retaining wall, the lower cover is provided with the lower cover body, the annular wall formed by extending the lower cover body to the upper cover, the groove enclosed by the lower cover body and the wall, the through hole running through the groove and the cover plate covering the through hole, the orthographic projection of the groove to the upper cover direction falls into the second back chamber; the orthographic projection of the through hole to the upper cover direction falls into the first rear cavity, the blocking wall and the second rear cavity; the ventilating partition is attached to one side of the surrounding wall close to the upper cover, is arranged at intervals with the cover plate and completely covers the groove; the ventilative separator will inhale the sound granule and encapsulate in the second back chamber, and lower cover body, apron, leg, fender wall and ventilative separator enclose into the air guide passageway jointly, and the air current of first back chamber bypasses the fender wall and passes through the air guide passageway, ventilative separator entering second back chamber. Compared with the prior art, the utility model discloses a speaker box good reliability and acoustic performance are excellent.

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 ]

With the advent of the internet era, the number of mobile terminal devices has increased. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. Speaker boxes for playing sounds such as music are widely used in mobile terminal devices such as mobile phones.

The loudspeaker box in the related art comprises a lower cover, an upper cover, a sound production unit and a ventilation isolation assembly, wherein the upper cover and the lower cover jointly form an accommodating space; the sounding single body and the upper cover enclose a front cavity, and the sounding single body, the upper cover and the lower cover together enclose a rear cavity; ventilative isolating component will the back cavity is first back cavity and the second back cavity that communicates each other, the sound production monomer is located first back cavity, the intussuseption of second back cavity is inhaled the sound granule, ventilative isolating component will inhale the sound granule encapsulate in the intracavity is followed to the second, thereby improves the low frequency acoustic performance of speaker box.

However, in the related art, since the volume of the rear cavity is small, the upper cover is closer to the lower cover, the breathable isolation component is smaller, the contact area between the sound absorption particles in the second rear cavity and the first rear cavity is further smaller, the sound absorption particles which are far away from the first rear cavity cannot well play a role, and the low-frequency acoustic performance of the loudspeaker box is reduced.

Therefore, there is a need to provide a new speaker box to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a reliability is high, excellent loudspeaker box of acoustic performance.

In order to achieve the purpose of appeasing, the utility model provides a loudspeaker box, which comprises a lower cover, an upper cover, a sounding monomer, a ventilating partition and a baffle wall, wherein the upper cover is arranged on the lower cover and forms an accommodating space together with the lower cover; the sound generating unit divides the accommodating space into a front cavity and a rear cavity, the rear cavity is divided into a first rear cavity and a second rear cavity by the baffle wall, the sound generating unit is positioned in the first rear cavity, the lower cover comprises a lower cover body covering the upper cover and enclosing the accommodating space together with the upper cover, an annular surrounding wall extending from the lower cover body to the second rear cavity and abutting against the baffle wall, a groove enclosed by the lower cover body and the surrounding wall, a through hole penetrating through the lower cover body and a cover plate covering the through hole;

the orthographic projection of the groove to the direction of the upper cover completely falls into the second rear cavity;

the orthographic projection of the through hole to the upper cover direction simultaneously falls into the first rear cavity, the blocking wall and the second rear cavity;

the ventilation separator is attached to one side of the surrounding wall close to the upper cover and completely covers the groove; the sound-absorbing particles are filled in the second rear cavity, and the sound-absorbing particles are packaged in the second rear cavity through the breathable partition.

The lower cover body, the cover plate, the surrounding wall, the blocking wall and the breathable partition piece jointly enclose an air guide channel, and the air flow of the first rear cavity bypasses the blocking wall, passes through the air guide channel and then enters the second rear cavity through the breathable partition piece.

Preferably, the cover plate is made of PET material.

Preferably, the blocking wall includes an upper blocking wall extending from the upper cover to the lower cover body and a lower blocking wall extending from the lower cover body to the upper cover, and the lower blocking wall abuts against the upper blocking wall.

Preferably, the upper cover is provided with a powder tank hole penetrating through the upper cover and a sealing cover covering the powder tank hole, and the powder tank hole is communicated with the second rear cavity.

Preferably, the cover plate cover is arranged on one side, far away from the upper cover, of the lower cover body, and the thickness of the cover plate is smaller than that of the lower cover.

Compared with the prior art, the loudspeaker box of the utility model divides the rear cavity into a first rear cavity and a second rear cavity through the baffle wall, realizes the air communication of the first rear cavity and the second rear cavity through the groove and the through hole on the lower cover body, and forms the sealing of the rear cavity through the cover plate; ventilative separator laminate in the leg inboard with the apron interval, and cover completely recess and part cover the through-hole, promptly the lower cover body the apron the leg keep off the wall and ventilative separator encloses into the air guide passageway jointly, inhales the sound granule and passes through ventilative separator encapsulate in the second back intracavity forms virtual vocal cavity. Because ventilative separator covers simultaneously the recess with the through-hole, just first back cavity with the second back cavity passes through the air guide channel intercommunication, make the area increase of ventilative separator, further inhale the sound granule with the area of contact grow of first back cavity, that is to say keep away from in the second back cavity the sound granule of inhaling of first back cavity position also can with air guide channel circulation of air to the low frequency acoustic performance of effectual change speaker box has improved the reliability of speaker box.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of a speaker box according to the present invention;

FIG. 2 is a sectional view taken along A-A in FIG. 1;

FIG. 3 is an exploded view of a portion of the perspective structure of FIG. 1;

fig. 4 is a schematic view of the three-dimensional structure relationship between the lower cover and the lower retaining wall of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a speaker box 100, which includes an upper cover 1, a lower cover 2, a sound generating unit 3, a baffle wall 4, and a ventilation spacer 5, wherein the upper cover 1 and the lower cover 2 together form an accommodating space 6, and in this embodiment, the upper cover 1 and the lower cover 2 form a matched set by ultrasonic welding.

The upper cover 1 comprises a powder filling hole 11 penetrating through the upper cover and a sealing cover 12 covering the powder filling hole 11.

The lower cover 2 comprises a lower cover body 20 covering the upper cover 1 and enclosing an accommodating space 6 together with the upper cover 1, an annular surrounding wall 24 formed by extending the lower cover body 20 to the upper cover 1 and abutting against the blocking wall 4, a groove 21 enclosed by the lower cover body 20 and the surrounding wall 24, a through hole 22 penetrating through the lower cover body 20, and a cover plate 23 covering the through hole 22, wherein the cover plate 23 is arranged on one side of the lower cover 2 far away from the upper cover 1, and the thickness of the cover plate 23 is smaller than that of the lower cover 2.

The sound generating single body 3 is accommodated in the accommodating space 6, and the accommodating space 6 is divided into a front cavity 61 and a rear cavity 62 by the sound generating single body 3; specifically, the upper cover 1 and the sound generating unit 3 jointly enclose the front cavity 61 for generating sound; the lower cover body 20, the upper cover 1 and the sound generating unit 3 jointly enclose the rear cavity 62 for improving low-frequency acoustic performance.

The blocking wall 4 divides the rear cavity 62 into a first rear cavity 621 and a second rear cavity 622, and the sound generating unit 3 is located in the first rear cavity 621.

In the present embodiment, the blocking wall 4 includes an upper blocking wall 41 formed by extending the upper lid 1 toward the lower lid body 20, and a lower blocking wall 42 formed by extending the lower lid body 20 toward the upper lid 1, and the lower blocking wall 42 abuts against the upper blocking wall 41, but the blocking wall may be formed integrally.

The powder filling hole 11 is communicated with the second rear cavity 622, and the sound absorption particles are filled through the powder filling hole 11 and then sealed through the sealing cover 22.

The groove 21 is defined by the lower cover body 20 and the surrounding wall 24, and an orthographic projection of the groove 21 to the direction of the upper cover 1 completely falls into the second rear cavity 622.

The orthographic projection of the through hole 22 to the direction of the upper cover 1 falls into the first rear cavity 621, the blocking wall 4 and the second rear cavity 622 simultaneously.

The apron 23 covers through-hole 22, just apron 23 is made by the PET material, and mechanical properties is better, and intensity is big, can guarantee lower cover body 20's intensity reduces relatively in thickness simultaneously, makes its through-hole 22 leave sufficient space with first back chamber 621 with recess 21 intercommunication.

That is, the lower cover body 20, the cover plate 23, the surrounding wall 24, the blocking wall 4 and the air-permeable partition 5 together define an air guide channel (not shown), and the air flow in the first rear cavity 621 bypasses the blocking wall 4, passes through the air guide channel, and then enters the second rear cavity 622 through the air-permeable partition 5.

The ventilation spacer 5 is attached to one side of the surrounding wall 24 close to the upper cover 1, and is spaced from the cover plate 23, and sound-absorbing particles (not shown) are filled in the second rear cavity 622 to form a virtual sound cavity (i.e., a D-Bass sound cavity) for improving low-frequency acoustic performance. The air permeable partition 5 completely covers the groove 21 and encapsulates the sound absorbing particles in the second rear cavity 622.

In the above structure, the through hole 22 and the groove 21 communicate the first rear cavity 621 with the second rear cavity 622 by using the point that the thickness of the lower cover body 20 is reduced, and the air-permeable partition 5 and the cover plate 23 are respectively covered on two sides of the lower cover 2 to form an interval arrangement, so that the lower cover body 20, the cover plate 23, the surrounding wall 24, the blocking wall 4 and the air-guide channel structure of the air-permeable partition 5 allow the airflow of the first rear cavity 621 to enter the second rear cavity 622 through the air-guide channel structure, thereby realizing the low-frequency acoustic effect.

Because the air guide channel structure extends along the length direction of the second rear cavity 622, the sound-absorbing particles in the second rear cavity 622 far away from the first rear cavity 621 can fully circulate with the air guide channel, i.e. the sound-absorbing particles can fully play the role of improving the low-frequency acoustic performance, so that the low-frequency acoustic performance of the loudspeaker box 100 is better.

Compared with the prior art, the loudspeaker box of the utility model divides the rear cavity into a first rear cavity and a second rear cavity through the baffle wall, realizes the air communication of the first rear cavity and the second rear cavity through the groove and the through hole on the lower cover, and forms the sealing of the rear cavity through the cover plate; ventilative separator laminate in the leg, with the apron interval, and cover completely recess and part cover the through-hole, the lower cover body the apron the leg keep off the wall and ventilative separator encloses into the air guide channel jointly, inhales the sound granule and passes through ventilative separator encapsulate in the second back intracavity forms virtual sound chamber. Because ventilative separator covers simultaneously the recess with the through-hole, just first back cavity with the second back cavity passes through the air guide channel intercommunication, make the area increase of ventilative separator, further inhale the sound granule with the area of contact grow of first back cavity, that is to say keep away from in the second back cavity the sound granule of inhaling of first back cavity position also can with air guide channel circulation of air to the low frequency acoustic performance of effectual change speaker box has improved the reliability of speaker box.

The utility model provides an above only do the embodiment of the utility model not consequently the restriction the patent scope of the utility model, all utilize the utility model discloses equivalent structure or equivalent flow transform that the content of description and drawing was done, or direct or indirect application is in other relevant technical field, all the same reason is included the utility model discloses an in the patent protection scope.

Claims

1. A loudspeaker box comprises a lower cover, an upper cover, a sound production single body, a ventilation isolating piece and a baffle wall, wherein the upper cover is covered on the lower cover and encloses an accommodating space together with the lower cover; the sound production unit divides the accommodating space into a front cavity and a rear cavity, the rear cavity is divided into a first rear cavity and a second rear cavity by the baffle wall, and the sound production unit is positioned in the first rear cavity; the orthographic projection of the groove to the direction of the upper cover completely falls into the second rear cavity; the orthographic projection of the through hole to the upper cover direction simultaneously falls into the first rear cavity, the blocking wall and the second rear cavity;

the ventilation separator is attached to one side of the surrounding wall close to the upper cover and completely covers the groove; sound-absorbing particles are filled in the second rear cavity, and the sound-absorbing particles are packaged in the second rear cavity by the breathable partition;

2. A loudspeaker enclosure according to claim 1, wherein the cover plate is made of PET.

3. The speaker cabinet as claimed in claim 1, wherein the blocking wall includes an upper blocking wall extending from the upper cover toward the lower cover body and a lower blocking wall extending from the lower cover body toward the upper cover, the lower blocking wall abutting against the upper blocking wall.

4. The speaker cabinet as claimed in claim 1, wherein the upper cover is provided with a powder tank hole penetrating therethrough and a cover lid covering the powder tank hole, the powder tank hole communicating with the second rear chamber.

5. The speaker cabinet of claim 1, wherein the cover plate cover is disposed on a side of the lower cover body away from the upper cover, and a thickness of the cover plate is smaller than a thickness of the lower cover.