CN219145597U

CN219145597U - Loudspeaker box

Info

Publication number: CN219145597U
Application number: CN202223264180.3U
Authority: CN
Inventors: 陆炳; 吴树文; 童迪江
Original assignee: AAC Microtech Changzhou Co Ltd
Current assignee: AAC Microtech Changzhou Co Ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-06-06
Anticipated expiration: 2032-12-06

Abstract

The utility model provides a loudspeaker box which comprises a shell and a loudspeaker monomer accommodated in the shell, wherein the loudspeaker monomer comprises a basin frame, a vibrating diaphragm and a magnetic circuit system, the vibrating diaphragm and the shell form a rear cavity, the magnetic circuit system comprises a magnetic bowl and a magnetic steel assembly fixed on the magnetic bowl, the loudspeaker monomer comprises a metal housing fixed on the basin frame and the magnetic bowl, the metal housing divides the rear cavity into a first rear cavity positioned in the loudspeaker monomer and a second rear cavity positioned outside the loudspeaker monomer, sound absorbing particles are filled in the second rear cavity, the metal housing comprises a bottom wall connected with the magnetic bowl and a side wall bent and extended from the bottom wall, the side wall of the metal housing is provided with a leakage hole formed by recessing from the edge far away from the bottom wall, the leakage hole is communicated with the first rear cavity and the second rear cavity, the loudspeaker box further comprises a metal ring covered on the magnetic bowl and the metal housing, and the magnetic bowl, the metal housing and the metal ring are glued and fixed. The utility model effectively avoids the problem of blockage of the leakage hole.

Description

Loudspeaker box

[ field of technology ]

The utility model relates to the field of sensors, 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. The speaker box in the related art comprises an upper cover, a lower cover which is assembled with the upper cover to form an accommodating space, a sounding monomer and a metal net cover which are respectively accommodated in the accommodating space; the metal net cover is provided with a leakage hole. Generally, the leakage hole part of the metal mesh enclosure can be blocked by the shell structure of the loudspeaker box, and meanwhile, when the magnetic bowl is fixed by glue, the glue also overflows to block part of the leakage hole, thereby affecting the performance of the product.

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 stable structure and excellent performance.

In order to achieve the above object, the utility model provides a speaker box, which comprises a shell with an accommodating space, and a speaker unit accommodated in the accommodating space, wherein the speaker unit comprises a basin frame, a vibrating diaphragm and a magnetic circuit system which are respectively supported by the basin frame, the vibrating diaphragm and the shell form a rear cavity, the magnetic circuit system comprises a magnetic bowl and a magnetic steel component fixed on the magnetic bowl, the speaker unit further comprises a metal housing fixed on the basin frame and the magnetic bowl, the metal housing divides the rear cavity into a first rear cavity positioned in the speaker unit and a second rear cavity positioned outside the speaker unit, sound absorbing particles are filled in the second rear cavity, the metal housing comprises a bottom wall connected with the magnetic bowl and a side wall bent and extended from the bottom wall, the side wall of the metal housing is provided with a leakage hole which is formed by recessing from the edge far away from the bottom wall, the leakage hole is communicated with the first rear cavity and the second rear cavity, the speaker box further comprises a metal ring arranged on the magnetic bowl and the metal housing, and the metal housing is fixed on the metal ring.

Preferably, the metal shell further includes an extension wall extending outwardly from the bottom wall, the extension wall and the housing together enclosing the second rear cavity.

Preferably, the bottom wall of the metal shell extends beyond the outer edge of the metal ring.

Preferably, a containing groove is formed between the inner side of the metal ring and the magnetic bowl so as to contain redundant glue.

Preferably, the side wall of the metal cover is abutted against the basin frame.

Preferably, the speaker unit is rectangular, protruding portions are arranged at positions of the housing corresponding to the four corners, and the protruding portions support the bottom wall of the metal housing.

Preferably, the metal housing is of an integral stamped construction.

Compared with the prior art, the 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 basin frame, a vibrating diaphragm and a magnetic circuit system, wherein the vibrating diaphragm and the shell are respectively supported by the basin frame, the vibrating diaphragm and the shell form a rear cavity, the magnetic circuit system comprises a magnetic bowl and a magnetic steel component fixed on the magnetic bowl, the loudspeaker single body further comprises a metal housing fixed on the basin frame and the magnetic bowl, the metal housing divides the rear cavity into a first rear cavity positioned in the loudspeaker single body and a second rear cavity positioned outside the loudspeaker single body, sound absorbing particles are filled in the second rear cavity, the metal housing comprises a bottom wall connected with the magnetic bowl and a side wall bent and extended from the bottom wall, the side wall of the metal housing is provided with a leakage hole formed by recessing from the edge far away from the bottom wall, the leakage hole is communicated with the first rear cavity and the second rear cavity, the loudspeaker box further comprises a metal ring arranged on the magnetic bowl and the metal housing, and the metal housing is fixed on the metal ring. According to the utility model, the traditional plastic cover plate is changed into the metal ring structure, so that the cover plate is glued and fixed with the magnetic bowl and the metal housing, the blocking of the plastic housing to the leakage hole on the metal housing is avoided, meanwhile, the magnetic bowl is glued, the underflow to the leakage hole is avoided, and the acoustic performance of the loudspeaker box is effectively improved.

[ 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 schematic view of another angle of the speaker box shown in fig. 1;

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

fig. 4 is an exploded view of the loudspeaker enclosure shown in fig. 1;

fig. 5 is a cross-sectional view taken along line A-A of 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. 1-5, 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 metal ring 3 covering the housing 1, and a metal cover 4 fixed on the housing 1.

The housing 1 includes a first housing 11 and a second housing 12 covered with the first housing 11, where the first housing 11, the second housing 12, and the metal cover plate 4 cooperate to form the accommodating space 10, the first housing 11 is provided with a first through hole 13 and a second through hole 14 penetrating through the first through hole, and the second housing 12 is provided with a third through hole 15 penetrating through the second through hole. The first through hole 13 is arranged around the speaker unit 2, the metal cover plate 4 is covered and sealed on the second through hole 14, and the third through hole 15 is arranged around the speaker unit 2.

The speaker unit 2 is rectangular, and comprises a frame 21, a vibrating diaphragm 22 supported on the frame 21, a magnetic circuit system 23, and a metal housing 24 fixed on the frame 21 and the magnetic circuit system 23, wherein the magnetic circuit system 23 drives the vibrating diaphragm 22 to vibrate and sound. The diaphragm 22 and the housing 1 form a rear cavity 101, and the magnetic circuit system 23 includes a magnetic bowl 231 and a magnetic steel component 232 fixed on the magnetic bowl 231.

The metal casing 24 is fixed on the basin frame 21 and the magnetic bowl 231, the metal casing 24 divides the rear cavity 101 into a first rear cavity 1011 positioned inside the speaker unit 2 and a second rear cavity 1012 positioned outside the speaker unit 2, the second rear cavity 1012 is filled with sound-absorbing particles, and the metal casing 24 prevents the sound-absorbing particles from entering the second rear cavity 1012. The metal shell 24 includes a bottom wall 241 connected to the magnetic bowl 231, a side wall 242 bent and extended from the bottom wall 241, and an extension wall 243 extending outwardly from the bottom wall 214, the bottom wall 241 has a ring structure, the side wall 242 abuts against the basin stand 21, and the extension wall 243 corresponds to the metal cover 4 in position and encloses the metal cover 4 and the housing 1 together to form the second rear cavity 1012.

The side wall 242 of the metal shell 24 is provided with a leakage hole 244 concavely formed from an edge far from the bottom wall 241, the leakage hole 244 communicates the first rear cavity 1011 and the second rear cavity 1012, and the leakage hole 244 is zigzag. Since the leakage hole 244 extends from the edge of the sidewall 242, the leakage hole 244 may be formed in the sidewall 242 of the metal shell 24 by punching, preferably, the entire metal shell 24 is a unitary punched structure. The surface of the magnetic bowl 231 is flush with the surface of the metal shell 24, the metal ring 3 is glued and fixed with the surface of the magnetic bowl 231 and the surface of the metal shell 24 through glue, and a containing groove 25 is formed between the inner side of the metal ring 3 and the magnetic bowl 231 to contain redundant glue. At the same time, the bottom wall 241 of the metal casing 24 extends beyond the outer edge of the metal ring 4, so that glue is not likely to flow down from the bottom wall 241 of the metal casing 24, thereby avoiding that the leakage hole 244 is blocked by glue.

The casing 1 is provided with protruding parts 16 at positions corresponding to four corners of the speaker unit 2, and the protruding parts 16 support a bottom wall 241 of the metal casing 24. The speaker unit 2, the metal shell 24 and the metal ring 3 cover part of the third through hole 15 of the housing 1, and the magnetic bowl 231 is partially exposed to the third through hole 15.

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 loudspeaker box, its include have accommodation space's casing and accept in speaker monomer in the accommodation space, speaker monomer include the basin frame, support respectively in vibrating diaphragm and magnetic circuit of basin frame, the vibrating diaphragm with the casing forms the back chamber, magnetic circuit includes magnetic bowl and is fixed in the magnet steel subassembly of magnetic bowl, its characterized in that: the speaker unit is characterized in that the speaker unit further comprises a metal housing fixed to the basin frame and the magnetic bowl, the metal housing divides the rear cavity into a first rear cavity positioned inside the speaker unit and a second rear cavity positioned outside the speaker unit, sound absorbing particles are filled in the second rear cavity, the metal housing comprises a bottom wall connected with the magnetic bowl and a side wall bent and extended from the bottom wall, the side wall of the metal housing is provided with a leakage hole formed by recessing the edge away from the bottom wall, the leakage hole is communicated with the first rear cavity and the second rear cavity, the speaker box further comprises a metal ring covered on the magnetic bowl and the metal housing, and the magnetic bowl, the metal housing and the metal ring are glued and fixed.

2. The loudspeaker enclosure of claim 1, wherein the metal shell further comprises an extension wall extending outwardly from the bottom wall, the extension wall co-enclosing with the housing the second rear cavity.

3. The loudspeaker enclosure of claim 1, wherein the bottom wall of the metal shell extends beyond the outer edge of the metal ring.

4. The loudspeaker enclosure of claim 1, wherein a receiving slot is formed between the inner side of the metal ring and the magnetic bowl to receive excess glue.

5. The loudspeaker enclosure of claim 1, wherein a sidewall of the metal shell abuts the frame.

6. The loudspeaker enclosure of claim 1, wherein the speaker unit has a rectangular shape, and the housing has protrusions at positions corresponding to four corners, and the protrusions support a bottom wall of the metal shell.

7. The loudspeaker enclosure of claim 1, wherein the metal shell is of unitary stamped construction.