CN107360516B

CN107360516B - Loudspeaker box

Info

Publication number: CN107360516B
Application number: CN201710526351.XA
Authority: CN
Inventors: 秦鹏
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2020-07-14
Anticipated expiration: 2037-06-30
Also published as: CN107360516A

Abstract

The invention discloses a loudspeaker box. Loudspeaker box includes the casing and accept in speaker monomer in the casing, speaker monomer vibrating diaphragm with the casing interval sets up the formation preceding sound chamber, shells inner wall extends there is the butt speaker monomer baffle, the baffle with the casing enclose into with the leading sound passageway of preceding sound chamber intercommunication, the casing corresponds leading sound mouth has been seted up to the position of leading sound passageway, loudspeaker box still connects including the lid the framework of leading sound mouth, the framework forms the intercommunication leading sound passageway and external play sound passageway, the framework is kept away from the one end of leading sound mouth is a sound mouth, it has first ventilative separator to lead sound mouth cover, it has the ventilative separator of second to go out sound mouth cover. The loudspeaker box provided by the invention can improve the air flow velocity in the sound guide channel, so that the air flow velocity consistency is good; and can absorb high-frequency components and effectively reduce resonance peak, thereby reducing distortion and improving tone quality.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of electroacoustic conversion, 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.

In the correlation technique, the speaker box includes the casing, accept in speaker monomer in the casing, speaker monomer is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm with the casing interval sets up the sound chamber before forming, the sound cotton is inhaled in the intussuseption of preceding sound chamber for smooth and smooth distortion peak. However, due to the higher acoustic resistance of the sound-absorbing cotton, sensitivity is lost due to overfilling; when the sound-absorbing cotton is only filled in the part, the air speed of the sound-guiding pipeline of the product is high, higher harmonics, air injection noise and the like are increased, and the acoustic effect of the loudspeaker box is reduced.

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

[ summary of the invention ]

The present invention is to overcome the above problems and to provide a speaker box capable of improving the flow rate of gas in the sound guide passage and absorbing high frequency components.

The technical scheme of the invention is as follows:

the utility model provides a loudspeaker box, including the casing that has accommodating space with accept in speaker monomer in the accommodating space, speaker monomer is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm with the casing interval sets up the preceding sound chamber of formation, shells inner wall extends there is the butt speaker monomer's baffle, the baffle with the casing enclose into with the sound channel that leads of preceding sound chamber intercommunication, the casing corresponds the sound mouth has been seted up to the position of sound channel that leads, loudspeaker box is still including covering and connecing the framework of sound mouth, the framework is both ends open-ended hollow structure, the framework forms the intercommunication sound channel that leads sound channel and external sound channel, the framework is kept away from the one end of sound mouth is a sound mouth, it has first ventilative separator to lead the sound mouth to cover, the sound mouth covers there is the ventilative separator of second.

Preferably, the acoustic resistance of the first breathable separator is less than the acoustic resistance of the second breathable separator.

Preferably, the end face of the casing corresponding to the sound guide port is recessed towards a direction far away from the frame body to form a groove, the frame body is correspondingly formed with a protrusion matched with the groove, the frame body and the casing are fixed through the groove and the protrusion in a matched mode, and the edge of the first breathable isolating piece surrounds the sound guide port and is clamped between the frame body and the casing.

Preferably, the first breathable isolating piece is bonded with the sound guide port, and the second breathable isolating piece is bonded with the sound outlet.

Preferably, the frame and the housing are ultrasonically welded.

Preferably, the joint of the sound guide port and the frame body is coated with a waterproof material layer.

Preferably, the material of the first breathable isolating piece and/or the second breathable isolating piece is one of non-woven fabric, dustproof mesh fabric, nylon woven mesh or metal mesh.

Preferably, an opening is formed in the other side, opposite to the vibrating diaphragm, of the shell, a cover plate covers the opening, a rear cavity is formed between the cover plate and the loudspeaker single body at an interval, and the rear cavity and the sound guide channel are isolated by the partition plate.

Preferably, the housing and the frame are integrally formed.

Compared with the related art, the loudspeaker box provided by the invention has the beneficial effects that:

the loudspeaker box comprises a frame body which is covered and connected with a sound guide port of the shell, the frame body is of a hollow structure, one end, far away from the sound guide port, of the frame body is a sound outlet, a first breathable isolating piece covers the sound guide port, a second breathable isolating piece covers the sound outlet, and sound absorbing cotton in the related technology is replaced by the first breathable isolating piece and the second breathable isolating piece, so that airflow has the advantage of good flow velocity consistency in a front sound cavity and a sound guide channel; and the first breathable isolating piece and the second breathable isolating piece have larger damping, have better effect on absorbing higher harmonics in sound, and can effectively reduce the resonance peak of the loudspeaker box, thereby reducing distortion and improving tone quality.

And secondly, the first breathable isolating piece is bonded with the sound guide port, the second breathable isolating piece is bonded with the sound outlet port, the sound guide port and the joint of the frame body are provided with waterproof material layers or the shell is fixed with the frame body through ultrasonic welding, so that external steam can be prevented from entering the sound guide channel and the front cavity, and the reliability of the loudspeaker box is further improved.

[ description of the drawings ]

Fig. 1 is a perspective view of a speaker box provided by the present invention;

FIG. 2 is an exploded schematic view of the loudspeaker enclosure of FIG. 1;

fig. 3 is a cross-sectional view of the loudspeaker enclosure of fig. 1 taken along the line a-a.

[ detailed description ] embodiments

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

Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a perspective view of a speaker box provided by the present invention; FIG. 2 is an exploded schematic view of the loudspeaker enclosure of FIG. 1; fig. 3 is a cross-sectional view of the loudspeaker enclosure of fig. 1 taken along the line a-a. The speaker box 100 includes a housing 11 having an accommodating space, a single vibration speaker 12 accommodated in the accommodating space, a cover plate 13 covering the housing 11, a partition 14 accommodated in the accommodating space, a frame 15 connected to the housing 11, a first air-permeable partition 16, and a second air-permeable partition 17.

The speaker unit 12 includes a diaphragm 121 for vibrating and sounding, and the diaphragm 121 and the housing 11 are spaced apart from each other to form a front sound cavity 110.

The housing 11 has an opening 111, and the cover plate 13 is covered on the housing 11 and covers the opening 111. The opening 111 is formed on the other side of the housing 11 opposite to the diaphragm 121, and a back cavity 112 is formed between the cover plate 13 and the speaker unit 12.

The partition 14 is formed by extending the inner wall of the housing 11 and abuts against the speaker unit 12. The partition 14 and the housing 11 enclose to form a sound guiding channel 113 communicated with the front sound cavity 110, a sound guiding opening 114 is opened at a position of the housing 11 corresponding to the sound guiding channel 113, and the partition 14 separates the rear cavity 112 from the sound guiding channel 113.

The frame 15 is covered on the sound guide port 114, and has a hollow structure with two open ends, the frame 15 forms a sound outlet channel 151 communicating the sound guide channel 113 with the outside, and one end of the frame 15 away from the sound guide port 114 is a sound outlet 152.

Specifically, a groove 115 is formed in a concave manner in a direction away from the frame 15 on an end surface of the housing 11 corresponding to the sound guide port 114, a protrusion (not numbered) adapted to the groove 115 is formed in a corresponding manner on the frame 15, and the frame 15 and the housing 11 are fixed by the groove 115 and the protrusion in a matching manner. Preferably, the frame 15 and the housing 11 are ultrasonically welded.

The first air-permeable isolating piece 16 covers the sound guide port 114, and the edge of the first air-permeable isolating piece 16 surrounds the sound guide port 114 and is sandwiched between the frame 15 and the housing 11. Preferably, the first air-permeable partition 16 is fixed to the sound guide port 114 by adhesion, so as to prevent the first air-permeable partition 16 from sliding.

In the present invention, in order to ensure the sealing performance of the joint between the housing 11 and the frame 15, a waterproof material layer is preferably coated on the joint between the sound guide port 114 and the frame 15 to prevent moisture from entering the sound guide channel 113 and the front sound cavity 110 to affect the reliability of the speaker box 100.

The second air-permeable isolating piece 17 covers the sound outlet 152 and is fixedly bonded with the sound outlet 152.

The first breathable isolation piece 16 and/or the second breathable isolation piece 17 are made of one of non-woven fabrics, dustproof mesh fabrics, nylon woven meshes or metal meshes. Preferably, the acoustic resistance of the first breathable barrier 16 is less than the acoustic resistance of the second breathable barrier 17.

In the present embodiment, the housing 11 and the frame 15 are formed separately. It should be understood that in other preferred embodiments of the present invention, the housing 11 may also be integrated with the frame 15, for example, the sidewall of the housing 11 may extend out of the sound guiding channel 113, the sound guiding port 114 is a sound outlet and covers the second air-permeable partition, and the first air-permeable partition disposed at a distance from the second air-permeable partition may be disposed in the sound guiding channel 113.

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 shell with an accommodating space and a loudspeaker single body accommodated in the accommodating space, wherein the loudspeaker single body comprises a vibrating diaphragm used for vibrating and sounding, the vibrating diaphragm and the shell are arranged at intervals to form a front sound cavity, the loudspeaker box is characterized in that a partition board abutted against the loudspeaker single body extends from the inner wall of the shell, the partition board and the shell enclose a sound guide channel communicated with the front sound cavity, a sound guide port is formed in the position, corresponding to the sound guide channel, of the shell, the loudspeaker box further comprises a frame body connected with the sound guide port in a covering mode, the shell and the frame body are formed in a split mode, the frame body is of a hollow structure with two open ends, the frame body forms a sound outlet channel communicated with the sound guide channel and the outside, one end, far away from the sound guide port, of the frame body is a sound outlet, and the sound guide port is covered with a first breathable isolating piece, the sound outlet is covered with a second breathable isolating piece, and the sound resistance of the first breathable isolating piece is smaller than that of the second breathable isolating piece. .

2. The speaker box according to claim 1, wherein a recess is formed in a recessed manner in a direction away from the frame on an end surface of the casing corresponding to the sound guide port, a protrusion adapted to the recess is formed in a corresponding manner on the frame, the frame and the casing are fixed by the engagement of the recess and the protrusion, and an edge of the first air-permeable partition surrounds the sound guide port and is sandwiched between the frame and the casing.

3. A loudspeaker enclosure according to claim 2, wherein the first air-permeable partition is bonded to the sound-guiding port and the second air-permeable partition is bonded to the sound-outlet port.

4. A loudspeaker enclosure according to claim 2, wherein the frame is ultrasonically welded to the housing.

5. A loudspeaker enclosure according to claim 3 or 4, wherein the junction of the sound-guiding opening and the frame is coated with a layer of waterproof material.

6. A loudspeaker enclosure according to claim 1, wherein the material of the first and/or second air-permeable partitions is one of a non-woven fabric, a dust-proof mesh, a nylon mesh or a metal mesh.

7. The loudspeaker box of claim 1, wherein an opening is formed on the other side of the casing opposite to the diaphragm, a cover plate covers the opening, a back cavity is formed between the cover plate and the loudspeaker single body at an interval, and the partition plate separates the back cavity from the sound guide channel.