CN210202000U

CN210202000U - Loudspeaker box

Info

Publication number: CN210202000U
Application number: CN201921005909.0U
Authority: CN
Inventors: Wei Chen; 陈伟; Jun Wu; 吴军
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-03-27
Anticipated expiration: 2029-06-29

Abstract

The utility model provides a loudspeaker box, it includes the upper cover, close the lower cover that forms accommodating space and accept the sound production monomer in accommodating space with the upper cover, the sound production monomer is including the vibrating diaphragm that is used for vibrating the sound production, the lower cover includes roof and support wall, support wall encloses and establishes around the sound production monomer, the lower cover is opened and is equipped with out the sound hole, the lower cover still includes the leg, the leg is connected with the support wall and encloses into the ring-type with the support wall, the one end that the roof was kept away from to the leg is equipped with the apron, the support wall, the leg, roof and apron enclose into the resonant cavity jointly, the through-hole has been seted up to one side that the support wall is close to the leg, the lower cover still includes the baffle that extends the support wall from the leg, the baffle separates into two at least sub-resonant. The utility model discloses in, a plurality of sub-resonant cavities are direct or indirect with preceding chamber intercommunication, have changed the single structural design of resonant cavity among the correlation technique, can reduce the high frequency response to improve the high frequency listening sense.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of the electroacoustic, especially, relate to a loudspeaker box.

[ background of the invention ]

With the rapid development of science and technology, audio equipment is also rapidly developed, people have higher and higher requirements on the functionality of the audio equipment, and more people have higher requirements on the audio performance of the speaker box. In the correlation technique, the space of front cavity only contains the dead zone and the sound guide channel zone of the sound production monomer, and is comparatively single, and such structure can produce a formant at the high frequency response for thereby the high frequency response is too high and the tone quality circumstances such as sound thorn ear, lip tooth sound sharp-pointed appear.

[ Utility model ] content

An object of the utility model is to provide a loudspeaker box aims at reducing the Q value (quality factor value) and the sensitivity of the high frequency formant of loudspeaker box, improves the high frequency and listens to the sense.

The technical scheme of the utility model as follows: a loudspeaker box comprises an upper cover, a lower cover and a sound production monomer, wherein the lower cover and the upper cover are enclosed to form an accommodating space, the sound production monomer is accommodated in the accommodating space, the sound production monomer comprises a vibrating diaphragm used for vibrating sound production, the lower cover comprises a top wall and a supporting wall, the top wall is arranged at an interval with the vibrating diaphragm, the supporting wall extends towards the upper cover from the top wall and fixes the sound production monomer, the supporting wall is enclosed around the sound production monomer, the top wall, the supporting wall and the sound production monomer are enclosed to form a front cavity, the lower cover is provided with a sound outlet hole communicated with the front cavity, the lower cover further comprises a surrounding wall, the surrounding wall extends towards the upper cover from the top wall, the surrounding wall is connected with the supporting wall and forms an annular shape with the supporting wall, one end, far away from the top wall, of the surrounding wall is provided with a cover plate, and the supporting wall, the top wall and the cover plate, the supporting wall is close to one side of leg has seted up the through-hole, the resonant cavity warp the through-hole with the antechamber intercommunication, the lower cover still includes certainly the leg extends to the baffle of supporting wall, the baffle will the resonant cavity is separated into two at least edges the vibration direction range upon range of setting of vibrating diaphragm and the sub-resonant cavity that communicates each other.

Further, the sub-resonant cavities have two.

Furthermore, the sub-resonant cavity and the sound outlet hole are positioned on two opposite sides of the sound generating monomer.

Further, the baffle is integrally formed with the support wall, the enclosure wall and the top wall.

Furthermore, the sub-resonant cavity comprises a first sub-resonant cavity communicated with the front cavity through the through hole and a second sub-resonant cavity overlapped on one side of the first sub-resonant cavity far away from the top wall, and the baffle is provided with a communication hole communicated with the first sub-resonant cavity and the second sub-resonant cavity.

Furthermore, a first opening is formed in the position, corresponding to the first sub-resonant cavity, of the top wall, the loudspeaker box further comprises a damping piece covering the first opening, and the damping piece is opposite to the baffle and is arranged at an interval.

Furthermore, the supporting wall is recessed towards the direction far away from the upper cover to form a first groove at the end far away from the top wall, and the sound generating unit is accommodated and fixed in the first groove.

Furthermore, one end, far away from the top wall, of the surrounding wall is a second groove which is recessed towards the direction far away from the upper cover, and the cover plate is accommodated and fixed in the second groove.

Furthermore, the sound outlet hole is formed in the surrounding wall and is located on the different side of the sound generating unit from the resonant cavity.

The beneficial effects of the utility model reside in that: the utility model discloses a through-hole and ante-chamber intercommunication on the resonant cavity of speaker box passes through the support wall to baffle between leg and the support wall separates into the resonant cavity two at least sub-resonant cavities that set up and communicate each other along the range upon range of vibration direction of vibrating diaphragm, consequently direct or indirect and ante-chamber intercommunication between a plurality of sub-resonant cavities, the single structural design of resonant cavity among the correlation technique has been changed, can effectively reduce the Q value (quality factor value) and the sensitivity of the high frequency resonance peak of speaker box, reduce the high frequency response, thereby improve the high frequency listening sense.

[ description of the drawings ]

Fig. 1 is a schematic overall structure diagram of a speaker box provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a speaker box according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of section C of FIG. 2;

fig. 4 is a schematic structural diagram of a lower cover according to an embodiment of the present invention;

FIG. 5 is a schematic view in section taken along the plane A-A of FIG. 1;

FIG. 6 is a schematic view in section taken along the plane B-B of FIG. 1;

fig. 7 is a graph showing a frequency response of a speaker box of the related art without a resonance chamber;

FIG. 8 is a graph of the frequency response of a loudspeaker enclosure of the related art having a single resonant cavity;

fig. 9 is a frequency response graph of a speaker box according to an embodiment of the present invention.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to 6, it is a speaker box 100 provided by an embodiment of the present invention, this speaker box 100 includes an upper cover 1, surround a lower cover 3 forming an accommodating space 5 with the upper cover 1 and accommodate a sound generating unit 2 in the accommodating space 5, the sound generating unit 2 includes a vibrating diaphragm 21 for vibration sound generation, the lower cover 3 includes a top wall 32 arranged at an interval with the vibrating diaphragm 21 and a supporting wall 33 extending from the top wall 32 toward the upper cover 1 and fixing the sound generating unit 2, the supporting wall 33 surrounds the sound generating unit 2, the top wall 32, the supporting wall 33 and the sound generating unit 2 surround and form a front cavity 51, the upper cover 1, the lower cover 3 and the sound generating unit 2 surround and form a rear cavity 52 opposite to the front cavity 51, the rear cavity 52 can be used for improving the acoustic performance of this speaker box 100, the sound outlet 31 communicated with the front cavity 51 is set up in the lower cover 3.

In the above embodiment, as shown in fig. 3, 5, and 6, the bottom cover 3 further includes a surrounding wall 34 extending from the top wall 32 to the top cover 1, the surrounding wall 34 is connected to the supporting wall 33 and surrounds a ring with the supporting wall 33, a cover plate 4 is disposed at one end of the surrounding wall 34 away from the top wall 32, the supporting wall 33, the surrounding wall 34, the top wall 32, and the cover plate 4 jointly surround a resonant cavity 53, a through hole 331 is disposed at one side of the supporting wall 33 close to the surrounding wall 34, the resonant cavity 53 is communicated with the front cavity 51 through the through hole 331, the bottom cover 3 further includes a baffle 35 extending from the surrounding wall 34 to the supporting wall 33, and the baffle 35 divides the resonant cavity 53 into at least two sub-resonant cavities 530 stacked and communicated with. The sound emitting hole 31 is opened in the support wall 33 and is located on a different side of the sound emitting cell 2 from the resonator cavity 53. The resonance chamber 53 is located inside the housing space 5 of the speaker box 100, and the height of the enclosure wall 34 does not exceed the height of the top surface of the sound generating unit 2, so that the speaker box 100 can be made thin and light as a whole. In the present embodiment, the resonant cavity 53 and the sound emitting hole 31 are located on opposite sides of the sound emitting cell 2. In other embodiments, the resonant cavities 53 may also be disposed on the other two sides of the sound generating unit 2 not directly facing the sound generating holes 31, which is not limited in this embodiment. Preferably, the baffle 35 is formed integrally with the support wall 33, the surrounding wall 34 and the top wall 32.

In this embodiment, the sub-cavity 530 has two. Specifically, as shown in fig. 5 and 6, the sub-resonant cavity 530 includes a first sub-resonant cavity 531 communicated with the front cavity 51 through the through hole 331, and a second sub-resonant cavity 532 stacked on one side of the first sub-resonant cavity 531 away from the top wall 32, and the baffle 35 is provided with a communication hole 351 communicating the first sub-resonant cavity 531 and the second sub-resonant cavity 532. The first sub-resonant cavity 531 and the second sub-resonant cavity 532 are communicated only through the communication hole 351, the first sub-resonant cavity 531 is directly communicated with the front cavity 51, the second sub-resonant cavity 532 is indirectly communicated with the front cavity 51 through the first sub-resonant cavity 531, the first sub-resonant cavity 531 and the second sub-resonant cavity 532 can form anti-resonance at the resonance peak position of the front cavity 51, the single structural design of the resonant cavity 53 in the related art is changed, the Q value (quality factor value) and the sensitivity of the high-frequency resonance peak of the loudspeaker box 100 can be further reduced, the high-frequency acoustic performance is improved, and the acoustic performance of the loudspeaker box 100 is better. The vertical height of the baffle 35 is adjusted to change the sizes of the first sub-resonant cavity 531 and the second sub-resonant cavity 532, and the sizes of the communication hole 351 and the through hole 331 are adjusted, so that the flatness of the high-frequency resonance peak can be effectively improved, and the optimal acoustic effect can be achieved. In other embodiments, the number of the sub-resonant cavities 530 may be three, four, five, etc., which is not limited by the embodiment.

Specifically, as shown in fig. 3, one end of the supporting wall 33, which is far away from the top wall 32, is recessed in the direction far away from the upper cover 1 to form a first groove 332, and the sound generating unit 2 is accommodated and fixed in the first groove 332, so that the fixing of the sound generating unit 2 is firmer, and the stability of sound generation of the speaker box 100 is improved. The end of the surrounding wall 34 far from the top wall 32 is recessed towards the direction far from the top cover 1 to form a second groove 341, and the cover plate 4 is accommodated and fixed in the second groove 341, and can be fixed by gluing, so as to improve the tightness of the first sub-resonant cavity 531 and the second sub-resonant cavity 532. The cover plate 4 is made of a soft material, and can depress the resonance peak of the first sub-cavity 531 and the second sub-cavity 532 and reduce distortion.

In order to balance the sound pressure of the resonant cavity 53 and the outside, in this embodiment, the top wall 32 is provided with a first opening 36 at a position corresponding to the first sub-resonant cavity 531, the speaker box 100 further includes a damping member 6 covering the first opening 36, and the damping member 6 is opposite to and spaced apart from the baffle 53. The damping member 6 can adjust the damping between the resonant cavity 53 and the outside by changing the density thereof.

Referring to fig. 7 to 9, it can be seen that, in the frequency range of 4000Hz to 6000Hz, a portion of the high frequency peak can be improved by disposing a single resonant cavity, and the effect of the two sub-resonant cavities 530 on improving the high frequency peak is more obvious in the present embodiment.

The above embodiments of the present invention are only described, 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: the sound-producing device comprises an upper cover, a lower cover and a sound-producing monomer, wherein the lower cover and the upper cover are enclosed to form an accommodating space, the sound-producing monomer is accommodated in the accommodating space, the sound-producing monomer comprises a vibrating diaphragm used for vibrating sound production, the lower cover comprises a top wall and a supporting wall, the top wall is arranged at an interval with the vibrating diaphragm, the supporting wall extends towards the upper cover from the top wall and fixes the sound-producing monomer, the supporting wall is enclosed around the sound-producing monomer, the top wall, the supporting wall and the sound-producing monomer are enclosed to form a front cavity, the lower cover is provided with a sound outlet communicated with the front cavity, the sound outlet is characterized in that the lower cover further comprises a surrounding wall, the surrounding wall extends towards the upper cover from the top wall, the surrounding wall is connected with the supporting wall and is enclosed into a ring shape with the supporting wall, one end, far away from the top wall, of the surrounding wall, the supporting wall is close to one side of leg has seted up the through-hole, the resonant cavity warp the through-hole with the antechamber intercommunication, the lower cover still includes certainly the leg extends to the baffle of supporting wall, the baffle will the resonant cavity is separated into two at least edges the vibration direction range upon range of setting of vibrating diaphragm and the sub-resonant cavity that communicates each other.

2. A loudspeaker enclosure according to claim 1, wherein there are two of the sub-resonant cavities.

3. A loudspeaker enclosure according to claim 2, wherein the sub-resonance chamber and the sound outlet are located on opposite sides of the sound generating cell.

4. A loudspeaker enclosure according to claim 2, wherein the baffle is formed integrally with the support wall, the enclosure wall and the top wall.

5. The loudspeaker box of claim 4, wherein the sub-resonant cavity comprises a first sub-resonant cavity communicated with the front cavity through the through hole and a second sub-resonant cavity overlapped on one side of the first sub-resonant cavity away from the top wall, and the baffle plate is provided with a communication hole communicated with the first sub-resonant cavity and the second sub-resonant cavity.

6. The speaker box as claimed in claim 5, wherein a first opening is defined in the top wall at a position corresponding to the first sub-resonant cavity, the speaker box further comprising a damping member covering the first opening, the damping member facing the baffle plate and being spaced apart from the baffle plate.

7. The speaker box according to any one of claims 1 to 6, wherein an end of the support wall away from the top wall is recessed in a direction away from the upper cover to form a first groove, and the sound generating unit is received and fixed in the first groove.

8. A loudspeaker enclosure according to claim 7, wherein the end of the enclosure wall remote from the top wall is recessed in a direction away from the top cover to form a second recess, the cover being received and secured in the second recess.

9. A loudspeaker enclosure according to claim 1, wherein the sound outlet opening is provided in the enclosure wall and is located on a different side of the sound generating unit than the resonance cavity.