CN107635158B

CN107635158B - Loudspeaker box

Info

Publication number: CN107635158B
Application number: CN201710652328.5A
Authority: CN
Inventors: 黄兴志; 施胜荣; 蔡斌; 柳林; 王程良
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2017-08-02
Filing date: 2017-08-02
Publication date: 2020-05-15
Anticipated expiration: 2037-08-02
Also published as: CN107635158A

Abstract

The invention discloses a loudspeaker box which comprises a lower cover, an upper cover and a sound-producing single body, wherein the sound-producing single body and the upper cover enclose a front cavity, the sound-producing single body, the lower cover and the upper cover jointly enclose a rear cavity, the loudspeaker box also comprises a ventilating isolation component and a clamping wall, the ventilating isolation component is fixedly clamped on the clamping wall and jointly divides the rear cavity into a first rear cavity and a second rear cavity which are mutually communicated with each other with the clamping wall, the sound-producing single body is positioned in the first rear cavity, sound-absorbing particles are filled in the second rear cavity, the ventilating isolation component encapsulates the sound-absorbing particles in the second rear cavity, a slotted hole penetrating through the lower cover is formed in the position of the lower cover corresponding to the ventilating isolation component, the ventilating isolation component is inserted into the slotted hole, and glue is injected into the slotted hole to fix the ventilating isolation component and the lower cover and form sealing. The loudspeaker box has better low-frequency acoustic performance, and in addition, the slotted hole not only serves as a positioning groove and a glue groove, but also can serve as an observation hole, so that the assembly of a product is facilitated.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The invention relates to an electroacoustic device, 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.

Related art raise the sound case and include the lower cover, with this lower cover assembly form an accommodating space the upper cover, one accept in this accommodating space the sound production monomer and by the wall that keeps off that the upper cover extends to the lower cover direction, the sound production monomer with the upper cover encloses into the antechamber, the sound production monomer the upper cover reaches the lower cover encloses into the back chamber jointly, keep off the wall with the upper cover encloses into the supplementary chamber of making a sound, it is close to one side subsides of lower cover establish with the ventilative baffle that the lower cover is parallel, through to it establishes the sound granule of inhaling to form virtual sound chamber to supplementary intracavity filling, thereby improves the low frequency acoustic performance of speaker case.

However, in the speaker box of the related art, the air-permeable partition is connected to the blocking wall by thermal fusion, the blocking wall needs to be provided with a layer of thermal fusion wall with a thickness of about 0.70mm to match the thermal fusion process, and meanwhile, the air-permeable partition is arranged parallel to the lower cover plate, which needs to be provided with a gap with a height of about 0.3mm with the lower cover to serve as a leakage of the rear cavity. The volume of the auxiliary sound-generating cavity which is taken as a virtual sound cavity is occupied by the arrangement of the hot-melting wall and the leaked gap structure, so that the volume of the virtual sound cavity is reduced, and the low-frequency acoustic performance of the loudspeaker box is 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 which is simple in structure, good in audio performance and high in reliability.

In order to achieve the above object, the present invention provides a speaker box, including a lower cover, an upper cover enclosing with the lower cover to form an accommodating space, and a sound generating unit accommodated in the accommodating space, wherein the sound generating unit and the upper cover enclose to form a front cavity, the sound generating unit, the lower cover and the upper cover together enclose to form a rear cavity, the speaker box further includes a ventilation isolation component and a clamping wall extending from the upper cover to the lower cover and abutting against the lower cover, the ventilation isolation component is fixedly clamped on the clamping wall and together with the clamping wall divides the rear cavity into a first rear cavity and a second rear cavity, the first rear cavity is communicated with the second rear cavity, the sound generating unit is located in the first rear cavity, the second rear cavity is filled with sound absorbing particles, the ventilation isolation component encapsulates the sound absorbing particles in the second rear cavity, and the lower cover is provided with a slot hole penetrating through the lower cover corresponding to the ventilation isolation component, the breathable isolation assembly is inserted into the groove hole, and glue is injected into the groove hole to fix the breathable isolation assembly and the lower cover and form sealing.

Preferably, the breathable isolation assembly comprises a frame and a mesh cloth combined on the frame, and the frame is clamped on the chuck wall.

Preferably, the frame is provided with an extension portion protruding in the direction of the lower cover on a side close to the lower cover, and the frame abuts against the lower cover and the extension portion is inserted into the slot.

Preferably, the two clip walls are oppositely arranged, each clip wall comprises a body portion and a sliding groove recessed from one end of the body portion close to the lower cover to the other end of the body portion, and the frame is inserted into and clamped in the two sliding grooves.

Preferably, the width of the sliding groove is equal to the thickness of the frame.

Preferably, the upper cover is provided with a groove at a position corresponding to the frame, and the frame is clamped in the groove.

Preferably, the frame and the mesh cloth are integrally formed by injection molding.

Preferably, the mesh cloth is positioned on one side of the frame close to the first rear cavity.

Compared with the prior art, the loudspeaker box provided by the invention has the advantages that the rear cavity is divided into the first rear cavity and the second rear cavity by the arrangement of the clamping wall extending from the upper cover to the lower cover and the ventilation isolation component clamped on the clamping wall, and the second rear cavity is filled with sound-absorbing particles to form the virtual sound cavity, so that the structure is simple, and the low-frequency performance of the loudspeaker box is improved; the lower cover corresponds the position of ventilative isolating component sets up the slotted hole that runs through the lower cover, ventilative isolating component inserts in the slotted hole, it is fixed to inject glue in the slotted hole ventilative isolating component with the lower cover is and form sealedly, prevents to inhale the first back cavity of sound granule seepage entering, and the slotted hole has both been regarded as constant head tank and gluey groove, can also regard as the observation hole, the equipment of the product of being convenient for, in addition, has saved the lower cover with ventilative isolating component sets up be used for the clearance of leaking between the clearance that sets up, has increased relatively the volume in second back cavity, simultaneously, has saved the height that sets up the hot melt wall, has also increased relatively the volume in second back cavity to increase the volume of filling of sound absorption granule, further improved the low frequency performance of speaker box.

[ 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 view of the partial perspective structure of FIG. 1;

fig. 3 is a sectional view taken along line a-a in fig. 1.

[ detailed description ] embodiments

The invention will be further explained with reference to the drawings and the embodiments.

Referring to fig. 1-3, the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound generating unit 3, a wall 4 and a ventilation isolation assembly 5. The lower cover 1 and the upper cover 2 are matched together to form a containing space 6. At least one of the lower cover 1 and the upper cover 2 includes a side wall, specifically, in the present embodiment, the lower cover 1 is a plate-shaped structure, the upper cover 2 includes a bottom wall 21 and a side wall 22, and the lower cover 1 is covered on the side wall 22 of the upper cover 2, so as to form the receiving space 6.

The sounding single body 3 is accommodated in the accommodating space 6, and the sounding single body 3 and the upper cover 2 enclose a front cavity 61; the sounding unit 3, the lower cover 1 and the upper cover 2 together enclose a rear cavity 62 for improving low-frequency acoustic performance.

The chuck wall 4 extends from the upper cover 2 toward the lower cover 1 and abuts against the lower cover 1. The air permeable partition member 5 is fixedly clamped to the chuck wall 4 and divides the rear chamber 62 into a first rear chamber 621 and a second rear chamber 622 together with the chuck wall 4. The first rear chamber 621 communicates with the second rear chamber 622.

Specifically, the sound generating unit 3 is located in the first rear cavity 621, sound absorbing particles (not shown) are filled in the second rear cavity 622 for forming a virtual sound cavity, so as to improve the low-frequency acoustic performance, and the sound absorbing particles are encapsulated in the second rear cavity 622 by the air permeable isolation component 5. In the present embodiment, the sound absorbing particles are zeolite particles.

The air-permeable isolation assembly 5 comprises a frame 51 and a mesh cloth 52 combined on the frame 51, wherein the frame 51 is clamped on the chuck wall 4 and is respectively connected with the bottom walls 21 of the lower cover 1 and the upper cover 2. Preferably, the frame 51 and the mesh cloth 52 are integrally formed by injection molding.

The clipping walls 4 are oppositely arranged and are respectively positioned on the side walls 22 of the upper cover 2, each clipping wall 4 comprises a body part 41 and a sliding groove 42 which is recessed from one end of the body part 41 close to the lower cover 1 to the other end thereof, the frame 51 comprises two first frames 511 which are fixed on the two clipping walls 4 respectively in an end-to-end manner and a second frame 512 and a third frame 513 which are connected with the two first frames 511, wherein the second frame 512 is fixed on the upper cover 2, the third frame 513 is fixed on the lower cover 1, the width of the sliding groove 42 is equal to the thickness of the first frame 511 of the frame 51, the first frame 511 is inserted into and clamped in the two sliding grooves 42, the structure is simple and the assembly is convenient, sound-absorbing particles in the second rear cavity 622 are effectively prevented from entering the first rear cavity 621 through the left side and the right side of the air-permeable isolating component 5, and the reliability of the loudspeaker box 100 is improved.

The bottom wall 21 of the upper cover 2 is provided with a groove 23 recessed in a direction away from the lower cover 1 at a position corresponding to the frame 51, and the lower cover 1 is provided with a slot hole 11 penetrating through the lower cover 1 at a position corresponding to the frame 51. The second frame 512 is inserted into the groove 23, which can prevent the sound-absorbing particles from entering the first rear cavity 621 from the upper end of the air-permeable isolation component 5 after the air-permeable isolation component 5 is assembled, so as to improve the reliability of the loudspeaker box 100, the third frame 513 is provided with an extension 5131 protruding from the surface of the third frame 513 close to the lower cover 1 to the direction of the lower cover 1, the extension 5131 is inserted into the slot 11, and the third frame 513 abuts against the periphery of the slot 11, so as to form a structure of clamping and limiting. The width of the inner diameter of the slot 11 is greater than or equal to the width of the extension 5131 and less than the thickness of the third frame 513. Preferably, the inner diameter of the slot 11 is slightly larger than the width of the extension 5131, so that the stability of the fixation of the air-permeable barrier assembly 5 can be ensured.

Slotted hole 11 both had been regarded as the location structure of ventilative isolating component installation, also observed inside observation hole during as the installation, simultaneously, also regard as gluey groove, inject glue in to slotted hole 11 in the installation, the glue of injection solidifies the back, except that fixed extension 5131 (also ventilative isolating component 5) and lower cover 1, can also play the sealed effect of product, prevents sound absorption granule in the second rear chamber 622 passes through the lower extreme of ventilative isolating component 5 gets into first rear chamber 621 has improved loudspeaker box 100's reliability.

To further increase the volume of the second rear cavity 622, the mesh 52 is located on the side of the frame 51 adjacent to the first rear cavity 621. The structure can increase the volume of the virtual sound cavity to a greater extent, and the audio effect is improved better.

Further, still be provided with the filling hole that is used for the filling to inhale the sound granule behind the second on the cavity 622, be provided with isolation layer 7 on the filling hole, isolation layer 7 avoids behind the second in the cavity 622 inhale the sound granule leak outward.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A loudspeaker box comprises a lower cover, an upper cover and a sound production unit, wherein the upper cover and the lower cover enclose an accommodating space, the sound production unit and the upper cover enclose a front cavity, the sound production unit, the lower cover and the upper cover jointly enclose a rear cavity, the loudspeaker box is characterized by further comprising a breathable isolation component and a clamping wall, the upper cover extends towards the lower cover and abuts against the lower cover, the breathable isolation component is fixedly clamped on the clamping wall and jointly divides the rear cavity into a first rear cavity and a second rear cavity with the clamping wall, the first rear cavity is communicated with the second rear cavity, the sound production unit is located in the first rear cavity, sound is absorbed in the second rear cavity, the breathable isolation component encapsulates the sound absorption particles in the second rear cavity, and a groove hole penetrating through the lower cover is formed in the position of the lower cover corresponding to the breathable isolation component, the breathable isolation assembly is inserted into the groove hole, and glue is injected into the groove hole to fix the breathable isolation assembly and the lower cover and form sealing.

2. A loudspeaker enclosure according to claim 1, wherein the air permeable barrier assembly comprises a frame and a mesh fabric bonded to the frame, the frame being clamped to the chuck wall.

3. The speaker cabinet according to claim 2, wherein an extension portion protruding in the direction of the lower cover is provided on a side of the frame close to the lower cover, and the frame abuts against the lower cover and the extension portion is inserted into the slot.

4. The speaker cabinet as claimed in claim 2, wherein the two clipping walls are oppositely disposed, each clipping wall includes a body portion and a sliding groove recessed from one end of the body portion close to the lower cover to the other end thereof, and the frame is inserted into and clipped in the two sliding grooves.

5. A loudspeaker enclosure according to claim 4, wherein the width of the chute is equal to the thickness of the frame.

6. The speaker box as claimed in claim 4, wherein the top cover has a groove at a position corresponding to the frame, and the frame is engaged in the groove.

7. A loudspeaker enclosure according to claim 2, wherein the frame is injection moulded integrally with the mesh.

8. A loudspeaker enclosure according to claim 2, wherein the mesh is located on a side of the frame adjacent the first rear chamber.