CN210053551U

CN210053551U - Built-in type phase reversal tube sound box

Info

Publication number: CN210053551U
Application number: CN201921223574.XU
Authority: CN
Inventors: 冯明华; 谢均武; 罗易
Original assignee: Guangzhou Shengda Electric Appliance Co Ltd
Current assignee: Guangzhou Shengda Electric Appliance Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-02-11
Anticipated expiration: 2029-07-31

Abstract

The utility model relates to an inner concealed type phase reversal tube sound box, which comprises a box body, a loudspeaker arranged on the front surface of the box body and a rear decorative plate arranged on the back surface of the box body, wherein the box body comprises a front plate and a rear plate, the loudspeaker is arranged on the front plate, and the rear plate is provided with an air vent; the rear decorative plate is provided with an exhaust groove communicated with the vent hole, and the exhaust groove and the vent hole form a built-in phase inversion pipe. The internal-mounted inverter tube sound box is provided with the box body and the rear decorative plate, the rear plate of the box body is provided with the vent hole, the rear decorative plate is provided with the exhaust groove corresponding to the vent hole, the exhaust groove and the vent hole form an inverter tube, and gas is exhausted from the vent hole of the box body and then exhausted from the exhaust groove by utilizing the principle of compressing air when the inverter tube and a loudspeaker vibrate at low sound, so that low-frequency output is increased, the low sound effect is enhanced, and the sound box is attractive and exquisite and has low cost.

Description

Built-in type phase reversal tube sound box

Technical Field

The utility model relates to a audio amplifier technical field especially relates to a built-in paraphase pipe audio amplifier.

Background

The sound box can be mainly divided into a sealed sound box and a phase reversal sound box according to the structural classification, wherein the sealed sound box is called a sealed sound box, namely a completely sealed structure. However, when the sound box works, the vibrating diaphragm can continuously move back and forth, and the air is driven to generate two groups of sound waves back and forth, so that people can hear the sound. The closed sound box adopts a closed box body to block the backward group, and only exposes the vibrating diaphragm in front to produce sound, so that the sound production efficiency can be reduced.

The phase inversion type sound box is additionally provided with a phase inversion tube which can lead out the backward sound phase of the loudspeaker in an inverted way on the basis of the closed sound box, and then the backward sound phase is led out through a phase inversion hole which is arranged on the box body and is connected with the phase inversion tube. When the inverter type speaker operates, since the diameter of the inverter tube is smaller than that of the speaker, a relatively strong sound wave is flushed out of the inverter tube, and thus, the sound waves of the speaker in both forward and backward directions are utilized, so that the sound quality of the speaker is improved and the bass is enhanced. Therefore, the inverted type speaker is most widely used at present, and the inverted type speaker can provide a wider bandwidth than the closed type speaker, has higher sensitivity and less distortion, and ideally, the lower limit of the low frequency reproduction frequency can be more than 20% lower than the resonance frequency of the speaker. The sound box can reproduce rich bass by using a smaller box body, and is the most widely applied type at present.

The phase inversion type loudspeaker box in the prior art has poor bass effect, is not attractive and has high cost.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a sound box with built-in inverter tube, which has a good bass effect, is beautiful and delicate, and has a low cost.

In order to realize the utility model discloses a purpose, the utility model discloses a following technical scheme:

a kind of inner-mounted inverter tube baffle box, including the container body, install the loudspeaker in the front of the said container body and install the back decorative board in the back of the said container body, the said container body includes front bezel and back plate, the said loudspeaker is installed on said front bezel, there are air vents on the said back plate; the rear decorative plate is provided with an exhaust groove communicated with the vent hole, and the exhaust groove and the vent hole form a built-in phase inversion pipe.

The internal-mounted inverter tube sound box is provided with the box body and the rear decorative plate, the rear plate of the box body is provided with the vent hole, the rear decorative plate is provided with the exhaust groove corresponding to the vent hole, the exhaust groove and the vent hole form an inverter tube, and gas is exhausted from the vent hole of the box body and then exhausted from the exhaust groove by utilizing the principle of compressing air when the inverter tube and a loudspeaker vibrate at low sound, so that low-frequency output is increased, the low sound effect is enhanced, and the sound box is attractive and exquisite and has low cost.

In one embodiment, the exhaust duct extends longitudinally through a lower end portion of the rear trim panel.

In one embodiment, the width of the vent groove is greater than or equal to the diameter of the vent hole.

In one embodiment, the length of the vent slot is less than one-half of the length of the rear trim panel.

In one embodiment, the depth of the vent groove is greater than or equal to one-half of the thickness of the rear trim panel.

In one embodiment, the vent holes are oval.

In one embodiment, the number of the vent holes is two.

In one embodiment, the rear plate is further provided with an electric wire through hole, and the rear decorative plate is provided with a mounting groove corresponding to the electric wire through hole.

In one embodiment, a transverse groove and a longitudinal groove are arranged on one side, back to the exhaust groove, of the rear decorative plate, and the transverse groove and the longitudinal groove are arranged oppositely.

In one embodiment, the concealed inverter tube sound box further comprises a mask covering the front face of the box body.

Drawings

Fig. 1 is a front view of a built-in type inverter tube sound box according to a preferred embodiment of the present invention;

FIG. 2 is a rear view of the built-in inverter shown in FIG. 1;

FIG. 3 is a cross-sectional view of the built-in inverter tube shown in FIG. 1;

FIG. 4 is a bottom view of the built-in inverter tube shown in FIG. 1;

FIG. 5 is a schematic view of the front plate shown in FIG. 1;

FIG. 6 is a cross-sectional view of the front plate shown in FIG. 5;

FIG. 7 is a schematic structural view of the back plate shown in FIG. 3;

FIG. 8 is a cross-sectional view of the back plate shown in FIG. 7;

FIG. 9 is a schematic structural view of the rear trim panel shown in FIG. 3;

FIG. 10 is a cross-sectional view of the rear trim panel of FIG. 9;

fig. 11 is a schematic structural view of the mesh enclosure shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 3, a built-in inverter tube sound box 100 according to a preferred embodiment of the present invention includes a box 10, a speaker 20 mounted on a front surface of the box 10, a rear decorative plate 30 mounted on a rear surface of the box 10, and a cover 40 covering the front surface of the box 10.

Referring to fig. 4 to 6 again, the cabinet 10 is substantially rectangular, the cabinet 10 has a cavity for accommodating the speaker 20, the cabinet 10 includes a front plate 11 and a rear plate 12, and the front plate 11 is provided with a mounting cavity for mounting the speaker 20; as shown in fig. 7 and 8, the rear plate 12 is provided with a vent hole 120 and a wire penetration hole 121, the vent hole 120 is located below the wire penetration hole 121, and the vent hole 120 is provided in an approximately elliptical shape for exhausting the gas in the case 10; in one embodiment, the number of the vent holes 120 is two, and the vent holes 120 are uniformly distributed to facilitate the discharge of the gas.

Referring to fig. 9 and 10 again, the rear decorative plate 30 is provided with an exhaust groove 31 communicating with the vent hole 120, the exhaust groove 31 and the vent hole 120 form a built-in inverter tube, so that the sound box does not need to be specially provided with the inverter tube, and the low frequency output is increased, the bass effect is enhanced, and the sound box is beautiful and exquisite and low in cost by utilizing the compressed air principle and the inverter tube principle during bass vibration of the loudspeaker 20 through the arrangement between the plates. Alternatively, an exhaust duct 31 longitudinally penetrates the lower end portion of the rear trim panel 30 to exhaust gas from the lower end of the cabinet 10, and to prevent the equipment from blocking the exhaust gas near a wall or the like. In another embodiment, the width of the venting groove 31 is greater than or equal to the diameter of the vent hole 120 to facilitate the venting of the gas; the length of the exhaust groove 31 is less than one half of the length of the rear decorative plate 30, so that the bass effect is prevented from being influenced by too long length of the exhaust groove 31; the depth of the air discharge groove 31 is greater than or equal to one half of the thickness of the rear decorative plate 30, which is more favorable for the formation of the inverter tube effect and makes the wind-dry sound smaller.

The rear decorative plate 30 is further provided with a mounting groove 32 corresponding to the wire through hole 121, so that the sound box can be conveniently provided with accessories such as wires. The side of the rear trim panel 30 facing away from the exhaust slot 31 is provided with a transverse slot 33 and a longitudinal slot 34, and the transverse slot 33 and the longitudinal slot 34 are arranged oppositely, so that the rear trim panel 30 is convenient to mount and process. Referring to fig. 11, the cover 40 covers the speaker 20 to prevent impurities from entering the speaker 20 and the cabinet 10 and affecting the sound quality of the sound box.

The built-in inverter sound box 100 is provided with the box body 10 and the rear decorative plate 30, the rear plate 12 of the box body 10 is provided with the vent hole 120, the rear decorative plate 30 is provided with the exhaust groove 31 corresponding to the vent hole 120, the exhaust groove 31 and the vent hole 120 form an inverter tube arrangement, and gas is exhausted from the vent hole 120 of the box body 10 and then exhausted from the exhaust groove 31 by utilizing the principle of compressing air when the inverter tube and the loudspeaker 20 vibrate at low sound, thereby increasing low-frequency output, enhancing bass effect, being beautiful and exquisite and having low cost.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A sound box with built-in phase reversal tubes is characterized by comprising a box body, a loudspeaker and a rear decorative plate, wherein the loudspeaker is arranged on the front face of the box body, the rear decorative plate is arranged on the back face of the box body, the box body comprises a front plate and a rear plate, the loudspeaker is arranged on the front plate, and the rear plate is provided with a vent hole; the rear decorative plate is provided with an exhaust groove communicated with the vent hole, and the exhaust groove and the vent hole form a built-in phase inversion pipe.

2. The concealed inverter tube sound box according to claim 1, wherein said air vent groove extends longitudinally through a lower end portion of said rear trim panel.

3. The concealed inverter tube loudspeaker according to claim 2, wherein said vent slot has a width greater than or equal to a diameter of said vent hole.

4. The concealed inverter tube sound box according to claim 2, wherein a length of said air discharge groove is less than one-half of a length of said rear decorative plate.

5. The concealed inverter tube sound box according to claim 2, wherein a depth of said air discharge groove is greater than or equal to one-half of a thickness of said rear decorative plate.

6. The concealed inverter tube loudspeaker box according to claim 1, wherein said vent holes are oval.

7. The concealed inverter tube loudspeaker box according to claim 1, wherein said number of said vent holes is two.

8. The concealed inverter tube sound box according to claim 1, wherein said rear plate further has a wire through hole, and said rear decorative plate has a mounting groove corresponding to said wire through hole.

9. The concealed inverter tube loudspeaker according to claim 1, wherein said rear decorative panel has a lateral groove and a longitudinal groove on a side facing away from said air discharge groove, said lateral groove being opposite to said longitudinal groove.

10. The concealed inverter sound box according to claim 1, further comprising a cover covering a front surface of said box.