CN219981029U

CN219981029U - Loudspeaker box

Info

Publication number: CN219981029U
Application number: CN202321330041.8U
Authority: CN
Inventors: 章超
Original assignee: AAC Microtech Changzhou Co Ltd
Current assignee: AAC Microtech Changzhou Co Ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-11-07
Anticipated expiration: 2033-05-29

Abstract

The utility model provides a loudspeaker box, which comprises a shell with an accommodating space and a loudspeaker monomer accommodated in the accommodating space, wherein the loudspeaker monomer comprises a basin frame, a vibrating diaphragm and a magnetic circuit system which are respectively supported in the basin frame, the accommodating space is divided into a front cavity and a rear cavity for sound emission by the loudspeaker monomer, the loudspeaker monomer is provided with a rear sound cavity, the rear cavity is communicated with the rear sound cavity, the shell comprises an outer surface and an inner surface which is opposite to the outer surface, the shell is provided with a leakage hole which is communicated with the rear cavity and the outside, the loudspeaker box also comprises a ventilation spacer which covers the leakage hole, and the size of the leakage hole on the outer surface is larger than that of the leakage hole on the inner surface. The utility model effectively avoids the problem of amplitude deviation generated when the loudspeaker box works.

Description

Loudspeaker box

[ field of technology ]

The utility model relates to the field of electroacoustic conversion, in particular to a loudspeaker box.

[ background Art ]

The speaker box is a sound-producing device commonly used in electronic devices, and generally includes a housing structure and a sound-producing unit housed in the housing structure. Specifically, the speaker box in the related art includes casing and sound production monomer, and sound production monomer separates into front chamber and back chamber with the space in the casing structure, and the casing includes the upper cover, forms the lower cover of an accommodation space with this upper cover group, sound production monomer accept in the accommodation space, the lower cover is further equipped with the leakage orifice, however conventional leakage orifice is the structure that the aperture is unchangeable, and it leads to the speaker box to produce the amplitude skew at normal during operation easily for the amplitude is to the one side skew, thereby influences the acoustic properties of speaker box.

Therefore, it is necessary to provide a new speaker box to solve the above-mentioned technical problems.

[ utility model ]

The utility model aims to provide a loudspeaker box with excellent acoustic performance.

In order to achieve the above object, the present utility model provides a speaker box, which includes a housing having an accommodating space, and a speaker unit accommodated in the accommodating space, the speaker unit includes a basin frame, a diaphragm and a magnetic circuit system respectively supported by the basin frame, the speaker unit divides the accommodating space into a front cavity and a rear cavity for sound to be emitted, the speaker unit has a rear sound cavity, the rear cavity is communicated with the rear sound cavity, the housing includes an outer surface and an inner surface opposite to the outer surface, the housing is provided with a leakage hole for communicating the rear cavity with the outside, the speaker box further includes a ventilation spacer for covering the leakage hole, and the size of the leakage hole on the outer surface is larger than that of the leakage hole on the inner surface.

Preferably, the leakage hole includes a first portion extending from an outer surface of the housing toward the inner surface and gradually decreasing in size.

Preferably, the cross section of the first portion along the vibration direction of the diaphragm is a truncated cone.

Preferably, the leakage hole includes a second portion extending from the first portion toward the direction of the inner surface, the second portion having a rectangular cross section in the vibration direction of the diaphragm.

Preferably, the leakage hole includes a third portion extending from the second portion toward the direction of the inner surface, the third portion having a rectangular cross section in the vibration direction of the diaphragm, and a size of the third portion being larger than a size of the second portion.

Preferably, the casing is provided with a recess portion for accommodating the air-permeable separator and a protrusion portion corresponding to the recess portion, and the leakage hole is provided in the protrusion portion.

Preferably, the position of the ventilation spacer corresponding to the first part of the leakage hole is provided with a groove.

Preferably, the casing includes a lower casing provided with the leakage hole, an upper casing covered with the lower casing and provided with an opening, and a gasket surrounding the opening, and the speaker box further includes a ventilation membrane covered on the gasket and covering the opening, and the diaphragm, the upper casing, the gasket, and the ventilation membrane enclose the front cavity.

Compared with the related art, the loudspeaker box comprises a shell with an accommodating space and a loudspeaker monomer accommodated in the accommodating space, wherein the loudspeaker monomer comprises a basin frame, a vibrating diaphragm and a magnetic circuit system, the vibrating diaphragm and the magnetic circuit system are respectively supported in the basin frame, the accommodating space is divided into a front cavity and a rear cavity for sound to be emitted by the loudspeaker monomer, the loudspeaker monomer is provided with the rear sound cavity, the rear cavity is communicated with the rear sound cavity, the shell comprises an outer surface and an inner surface which is opposite to the outer surface, the shell is provided with a leakage hole which is communicated with the rear cavity and the outside, and the loudspeaker box further comprises a ventilation isolation piece which covers the leakage hole, and the size of the leakage hole on the outer surface is larger than that of the leakage hole on the inner surface. The utility model avoids the problem of amplitude deviation easily caused by the conventional leakage holes by designing the unique shape of the leakage holes, thereby effectively improving the acoustic performance of the loudspeaker box.

[ description of the drawings ]

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

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

fig. 2 is a partially exploded view of the loudspeaker enclosure shown in fig. 1;

fig. 3 is an exploded view of the loudspeaker enclosure shown in fig. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 6 is a cross-sectional view of a speaker unit in the speaker box shown in fig. 1.

[ detailed description ] of the utility model

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the present utility model provides a speaker box 100, which includes a housing 1 having a receiving space 10, a speaker unit 2 received in the receiving space 10, a circuit board 3 for providing an electrical connection to the speaker unit 2, a ventilation spacer 4 covering the housing 1, and a ventilation membrane 5.

The housing 1 comprises an outer surface 11 and an inner surface 12 arranged opposite to the outer surface 11. The speaker unit 100 divides the housing space 10 into a front chamber 101 and a rear chamber 102 for sound emission. The housing 1 comprises a lower housing 13, an upper housing 14 which is covered with the lower housing 13 and is provided with an opening 140, and a gasket 15 which is arranged around the opening 140, and the breathable film 5 is covered on the gasket 15 and covers the opening 140. The upper case 14 is provided with a stage 141 for fixing the speaker unit 2 and fixing posts 142 extending from the stage 141 on the inner surface 12 thereof, and the fixing posts 142 fix the circuit board 3.

The speaker unit 2 comprises a frame 21, a diaphragm 22 respectively supported on the frame 21, a voice coil 23 fixed to the diaphragm 22, and a magnetic circuit 24, wherein the magnetic circuit 24 comprises a magnetic bowl 241 and a magnetic steel 242 arranged on the magnetic bowl 241. The speaker unit 2 has a rear sound chamber 25 located below the diaphragm 22, the rear sound chamber 25 communicating with the rear chamber 102. The basin stand 21 is fixed to the stage 141 of the upper case 14. The circuit board 3 is clamped between the basin frame 21 and the magnetic bowl 241, and the circuit board 3 extends from the accommodating space 10 of the housing 1 to the outside.

The diaphragm 22 is disposed opposite to the opening 140 of the upper housing 14, the diaphragm 22, the upper housing 14, the gasket 15, and the air-permeable membrane 5 enclose the front cavity 101, and the upper housing 14, the lower housing 13, and the speaker unit 2 enclose the rear cavity 102. The lower housing 13 is provided with a leakage hole 16 communicating the rear cavity 102 with the outside, the air-permeable barrier 4 covers the leakage hole 16 to prevent dust and moisture from entering, and the size of the leakage hole 16 at the outer surface 11 is larger than the size of the leakage hole 16 at the inner surface 12. The leakage hole 16 is used as a pressure equalizing hole between the rear cavity 102 and the external environment, and the ventilation spacer 4 can adjust the ventilation amount of the leakage hole 16.

The leakage hole 16 comprises a first portion 161 extending from the outer surface 11 of the housing 1 in the direction of the inner surface 12 and gradually decreasing in size, a second portion 162 extending from the first portion 161 in the direction of the inner surface 12, and a third portion 163 continuing from the second portion 162 in the direction of the inner surface 12, the first portion 161 and the second portion 162 being combined in a funnel shape, the first portion 161 being located at the outer surface 11 having a larger size than the third portion 163 being located at the inner surface 12. The cross section of the first portion 161 along the vibration direction of the diaphragm 22 is a truncated cone, and the cross section of the first portion 161 along the direction perpendicular to the vibration direction of the diaphragm 22 is a circle. The second portion 162 has a rectangular cross section along the vibration direction of the diaphragm 22, and the second portion 162 has a circular cross section along a direction perpendicular to the vibration direction of the diaphragm 22. The third portion 163 has a rectangular cross section along the vibration direction of the diaphragm 22, the third portion 163 has a circular cross section along a direction perpendicular to the vibration direction of the diaphragm 22, and the third portion 163 has a size larger than that of the second portion 162. The height of the first portion 161 in the thickness direction of the housing 1 is greater than the height of the second portion 162 in the thickness direction of the housing 1, and the height of the second portion 162 in the thickness direction of the housing 1 is greater than the height of the third portion 163 in the thickness direction of the housing 1.

The lower case 13 is provided with a recess 131 for accommodating the air-permeable separator 4 and a protrusion 132 corresponding to the position of the recess 131, the recess 131 communicates with the leakage hole 16, and the leakage hole 16 is provided on the protrusion 132. The breathable barrier 4 is provided with a recess 41 at a position corresponding to the first portion 161 of the leakage hole 16, the length of the recess 41 being smaller than the dimension of the first portion 161 at the outer surface 11.

While the utility model has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the utility model.

Claims

1. The utility model provides a speaker box, its include have accommodation space's casing and accept in speaker monomer in accommodation space, speaker monomer include the basin frame, support respectively in vibrating diaphragm and the magnetic circuit of basin frame, speaker monomer will accommodation space is separated into front chamber and back chamber that supplies sound to send, speaker monomer has back sound chamber, back chamber with back sound chamber intercommunication, the casing include the surface and with the internal surface that the surface set up relatively, its characterized in that: the shell is provided with a leakage hole communicated with the rear cavity and the outside, the loudspeaker box further comprises a ventilation isolation piece for covering the leakage hole, and the size of the leakage hole on the outer surface is larger than that of the leakage hole on the inner surface.

2. The loudspeaker enclosure of claim 1, wherein the leakage aperture includes a first portion that extends from an outer surface of the housing in a direction toward the inner surface and that tapers in size.

3. The loudspeaker enclosure of claim 2, wherein the first portion has a truncated cone cross-section in the direction of vibration of the diaphragm.

4. The loudspeaker enclosure according to claim 2, wherein the leakage hole includes a second portion extending from the first portion in a direction of the inner surface, the second portion having a rectangular cross section in a vibration direction of the diaphragm.

5. The speaker box according to claim 4, wherein the leakage hole includes a third portion extending from the second portion toward the direction of the inner surface, a cross section of the third portion in a vibration direction of the diaphragm is rectangular, and a size of the third portion is larger than a size of the second portion.

6. The loudspeaker enclosure according to claim 1, wherein the housing is provided with a recess portion that accommodates the air-permeable spacer and a protruding portion that corresponds to the recess portion in position, and the leakage hole is provided on the protruding portion.

7. The loudspeaker enclosure of claim 1, wherein the air-permeable barrier is recessed in a location corresponding to the first portion of the leakage aperture.

8. The loudspeaker enclosure of claim 1, wherein the housing includes a lower housing provided with the leakage hole, an upper housing covered with the lower housing and provided with an opening, and a gasket provided around the opening, the loudspeaker enclosure further including a gas-permeable membrane covered on the gasket and covering the opening, the diaphragm, the upper housing, the gasket, and the gas-permeable membrane enclosing the front chamber.