CN209964288U - Loudspeaker box - Google Patents

Loudspeaker box Download PDF

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Publication number
CN209964288U
CN209964288U CN201920552650.5U CN201920552650U CN209964288U CN 209964288 U CN209964288 U CN 209964288U CN 201920552650 U CN201920552650 U CN 201920552650U CN 209964288 U CN209964288 U CN 209964288U
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China
Prior art keywords
sound
cover
frame
fixed
absorbing
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CN201920552650.5U
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Chinese (zh)
Inventor
沈凯华
吴军
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Priority to CN201920552650.5U priority Critical patent/CN209964288U/en
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Abstract

The utility model provides a loudspeaker box, which comprises a shell with an accommodating space and a sounding monomer accommodated in the accommodating space; the sound-producing monomer comprises a basin frame, a vibrating diaphragm and a magnetic circuit system which are respectively fixed on the basin frame, a leakage hole which is formed by the magnetic circuit system and the basin frame and used for the side leakage of the sound-producing monomer is enclosed, and the sound-producing monomer divides the accommodating space into a front cavity and a rear cavity which are used for sound production; the basin frame, the vibrating diaphragm and the magnetic circuit system jointly enclose an acoustic cavity, and the acoustic cavity is communicated with the rear cavity through a leakage hole; the loudspeaker box also comprises a sound absorption wall which is attached in the shell and made of sound absorption materials, and the sound absorption wall is abutted against the sound production monomer and covers the leakage hole; the leakage hole forms air communication with the rear cavity through the sound-absorbing wall. Compared with the prior art, the utility model discloses a speaker box reliability is high and acoustic performance is excellent.

Description

Loudspeaker box
[ technical field ] A method for producing a semiconductor device
The utility model relates to an acoustoelectric field especially relates to an apply to speaker box of portable electronic product.
[ 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.
Related art the speaker box including have accommodating space the casing, accept in sound production monomer in the casing and form in leading in the acoustic channel in the accommodating space, sound production monomer is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm will accommodating space separates into preceding sound chamber and back cavity, leading the acoustic channel will preceding sound chamber with external intercommunication and with preceding sound chamber constitutes jointly the antechamber.
However, in the speaker box of the related art, the sound generating unit adopts a large leakage design, that is, the leakage design of the sound generating unit is on the side of the frame, when the speaker box is directly installed in the accommodating space, the structure matched with the large leakage design is not arranged in the shell, so that the sound generating unit is integrally leaked to a large extent, the distortion of the speaker box is caused, and even the noise is generated due to the overlarge amplitude of the speaker box.
Therefore, there is a need to provide a new speaker box to solve the above technical problems.
[ Utility model ] content
An object of the utility model is to provide a speaker box that the reliability is high and acoustic performance is excellent.
In order to achieve the above object, the present invention provides a speaker box, which comprises a housing having an accommodating space and a sounding unit accommodated in the accommodating space; the sound-producing unit comprises a basin frame, a vibrating diaphragm and a magnetic circuit system, wherein the vibrating diaphragm and the magnetic circuit system are respectively fixed on the basin frame; the basin frame, the vibrating diaphragm and the magnetic circuit system jointly enclose an acoustic cavity, and the acoustic cavity is communicated with the rear cavity through the leakage hole; the loudspeaker box also comprises a sound absorption wall which is attached in the shell and made of sound absorption materials, and the sound absorption wall is abutted against the sound production single body and covers the leakage hole; the leakage hole is communicated with the rear cavity through the sound absorption wall.
Preferably, inhale the sound wall by inhale the sound cotton and make, inhale the sound wall be the loop configuration and encircle set up in sound production monomer side.
Preferably, the housing comprises an upper cover and a lower cover which is covered on the upper cover and jointly encloses the accommodating space; the sound production monomer with the upper cover interval forms relatively the antechamber, the sound production monomer with the lower cover reaches the upper cover forms jointly the back chamber, inhale the sound wall subsides and locate the lower cover and to the upper cover direction protrusion extends.
Preferably, the frame comprises a frame body and a fixed wall extending from the frame body to a direction far away from the vibrating diaphragm, the vibrating diaphragm is fixed on one side of the frame body far away from the fixed wall, and the sound-absorbing wall abuts against the frame body; the magnetic circuit system comprises a magnetic yoke fixed on the fixed wall, and the magnetic yoke and the basin stand body are arranged at intervals and jointly surround the leakage hole.
Preferably, the basin frame is rectangular, and the leakage holes comprise two holes which are respectively positioned at two opposite sides of the short shaft of the basin frame.
Preferably, the lower cover includes a through opening penetrating therethrough, the yoke is fixed to the lower cover and completely filled in the through opening, and the sound absorbing wall is arranged along the periphery of the through opening in an extending manner.
Compared with the prior art, the speaker box of the utility model has the advantages that the sound-producing monomer forms the leakage hole with a large leakage structure on the side surface, the sound-absorbing wall made of sound-absorbing material is arranged in the shell in a sticking way, and the sound-absorbing wall is abutted against the sound-producing monomer and covers the leakage hole; the leakage hole is communicated with the rear cavity through the sound absorption wall. Above-mentioned structure, through inhale the setting of sound wall, sheltered from completely leak the hole, make and leak the structure greatly leak the hole passes through it leaks to inhale the sound wall, inhale the sound wall and ensure effectively the free normal leakage quantity of sound production has realized that the sound production monomer that has the structure of leaking greatly uses when in the speaker box the distortion is little, has avoided the noise to produce, thereby has improved the reliability of speaker box is high and the acoustic performance is excellent.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic perspective view of a speaker box according to the present invention;
fig. 2 is an exploded view of a part of a three-dimensional structure of the speaker box of the present invention;
fig. 3 is a partial exploded view of the speaker box of the present invention;
fig. 4 is an assembly view of a part of the structure of the speaker box of the present invention;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 6 is an enlarged view of a portion B shown in fig. 5.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a speaker box 100, which includes a housing 1, a sound generating unit 2 and a sound absorbing wall 3.
The housing 1 has a receiving space 10. The housing 1 may be an integral structure or a separate structure. In the present embodiment, the housing 1 is a split structure, and specifically, the housing 1 includes an upper cover 11 and a lower cover 12 covering the upper cover 11 and enclosing the accommodating space 10 together.
The sounding monomer 2 comprises a basin frame 21, a vibration system 22 and a magnetic circuit system 23, wherein the vibration system 22 and the magnetic circuit system 23 are respectively fixed on the basin frame 21, the magnetic circuit system 23 and the basin frame 21 jointly enclose and are used for a leakage hole 24 which is leaked from the side surface of the sounding monomer 2, and the magnetic circuit system 23 is used for providing magnetic field driving to the vibration system 22 to vibrate and sound.
The frame 21 comprises a frame body 211 and a fixed wall 212 extending from the frame body 211 in a direction away from the vibration system 22.
The vibration system 22 includes a diaphragm 221 fixed to the frame 21 and a voice coil 222 for driving the diaphragm 221 to vibrate and generate sound. The sound generating unit 2 divides the accommodating space 10 into a front cavity 101 and a rear cavity 102, and the front cavity 101 is used for generating sound.
Specifically, the vibrating diaphragm 221 is fixed to a side of the frame body 211 away from the fixed wall 212. The sound generating unit 2 and the upper cover 11 are opposite at intervals to form the front cavity 101, and the sound generating unit 2, the lower cover 12 and the upper cover 11 together form the rear cavity 102; the frame 21, the diaphragm 221 and the magnetic circuit system 23 together enclose an acoustic cavity 20.
The magnetic circuit system 23 includes a magnetic yoke 231 fixed to the frame 21 and enclosing the leakage hole 24 together with the frame 21, and a magnetic steel 232 fixed to the magnetic yoke 231 and accommodated in the acoustic cavity 20. Specifically, the yoke 231 is fixed to a side of the fixed wall 212 away from the diaphragm 221.
In this embodiment, the leakage hole 24 is formed by the magnetic yoke 231 and the frame body 211 at an interval and enclosed together; further, the basin frame 21 is rectangular, and the two leakage holes 24 are respectively located on two opposite sides of the short axis of the basin frame 21.
Preferably, the lower cover 12 is provided with a through opening 120 therethrough. The magnetic yoke 231 is fixed to the lower cover 12 and completely filled in the through hole 120 to form an exposed structure of the magnetic yoke 231, which is beneficial to heat dissipation of the speaker box 100 and reliability improvement, and is beneficial to making the magnetic circuit system 23 larger under the same volume, improving driving force and improving acoustic performance.
Specifically, inhale the sound wall 3 paste and locate in casing 1, inhale sound wall 3 butt in sound production monomer 2 just covers leak hole 24.
In the present embodiment, the sound absorbing wall 3 is attached to the lower cover 12 and extends to protrude toward the upper cover 11, and more preferably, the sound absorbing wall extends along the periphery of the through hole 120; inhale sound wall 3 be the loop configuration and encircle set up in 2 sides of sound production monomer, this loop configuration has enclosed sound wall 3's hollow region 30 has been inhaled, inhale sound wall 3 respectively the butt in basin frame body 211 with fixed wall 212.
It is worth mentioning that the sound-absorbing wall 3 is made of a sound-absorbing material, which has air permeability; preferably, the sound-absorbing wall 3 is made of sound-absorbing cotton.
Further, leak hole 24 is located in hollow area 30 and with sound wall 3 is just to setting up, leak hole 24 passes through sound wall 3 with back chamber 102 intercommunication is equivalent to sound wall 3 will leak hole 24 shelters from completely, at this moment, leak hole 24 not directly with back chamber 102 intercommunication, but pass through sound wall 3 indirectly with back chamber 102 intercommunication, and by sound wall 3 decides the leakage quantity of sound monomer 2.
In the above structure, the leakage hole 24 is communicated with the sound cavity 20, the sound-absorbing wall 3 communicates the leakage hole 24 with the rear cavity 102 to form a leakage structure, the leakage hole 24 is completely shielded by the sound-absorbing wall 3, so that the leakage hole 24 of the large leakage structure leaks through the sound-absorbing wall 3, the sound-absorbing wall 3 effectively ensures the normal leakage amount of the sound-generating unit 2, and the sound-generating unit 2 with the large leakage structure has small distortion when being used in the speaker box 100; while ensuring that the vibration amplitude is normal and avoiding the generation of noise, thereby improving the reliability and acoustic performance of the speaker box 100.
Compared with the prior art, the speaker box of the utility model has the advantages that the sound-producing monomer forms the leakage hole with a large leakage structure on the side surface, the sound-absorbing wall made of sound-absorbing material is arranged in the shell in a sticking way, and the sound-absorbing wall is abutted against the sound-producing monomer and covers the leakage hole; the leakage hole is communicated with the rear cavity through the sound absorption wall. Above-mentioned structure, through inhale the setting of sound wall, sheltered from completely leak the hole, make and leak the structure greatly leak the hole passes through it leaks to inhale the sound wall, inhale the sound wall and ensure effectively the free normal leakage quantity of sound production has realized that the sound production monomer that has the structure of leaking greatly uses when in the speaker box the distortion is little, has avoided the noise to produce, thereby has improved the reliability of speaker box is high and the acoustic performance is excellent.
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 (6)

1. A loudspeaker box comprises a shell with an accommodating space and a sounding single body accommodated in the accommodating space; the sound-producing unit comprises a basin frame, a vibrating diaphragm and a magnetic circuit system, wherein the vibrating diaphragm and the magnetic circuit system are respectively fixed on the basin frame; the loudspeaker box is characterized in that the loudspeaker box also comprises a sound absorption wall which is attached in the shell and made of sound absorption materials, and the sound absorption wall is abutted against the sound production single body and covers the leakage hole; the leakage hole is communicated with the rear cavity through the sound absorption wall.
2. The loudspeaker box of claim 1, wherein the sound-absorbing wall is made of sound-absorbing cotton, and the sound-absorbing wall is in a ring structure and is arranged around the side of the sound-emitting single body.
3. The loudspeaker enclosure according to claim 1, wherein the housing comprises an upper cover, a lower cover covering the upper cover and enclosing the accommodating space together; the sound production monomer with the upper cover interval forms relatively the antechamber, the sound production monomer with the lower cover reaches the upper cover forms jointly the back chamber, inhale the sound wall subsides and locate the lower cover and to the upper cover direction protrusion extends.
4. The loudspeaker box of claim 3, wherein the frame comprises a frame body and a fixed wall extending from the frame body in a direction away from the diaphragm, the diaphragm is fixed on one side of the frame body away from the fixed wall, and the sound-absorbing wall abuts against the frame body; the magnetic circuit system comprises a magnetic yoke fixed on the fixed wall, and the magnetic yoke and the basin stand body are arranged at intervals and jointly surround the leakage hole.
5. A loudspeaker enclosure according to claim 4, wherein the frame is rectangular and the leak holes comprise two and are located on opposite sides of a minor axis of the frame.
6. A loudspeaker enclosure according to claim 5, wherein the lower cover includes a through opening extending therethrough, the yoke being secured to the lower cover and filling the through opening completely, the sound absorbing wall extending around the periphery of the through opening.
CN201920552650.5U 2019-04-22 2019-04-22 Loudspeaker box Active CN209964288U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920552650.5U CN209964288U (en) 2019-04-22 2019-04-22 Loudspeaker box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920552650.5U CN209964288U (en) 2019-04-22 2019-04-22 Loudspeaker box

Publications (1)

Publication Number Publication Date
CN209964288U true CN209964288U (en) 2020-01-17

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ID=69243197

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920552650.5U Active CN209964288U (en) 2019-04-22 2019-04-22 Loudspeaker box

Country Status (1)

Country Link
CN (1) CN209964288U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111343542A (en) * 2020-03-05 2020-06-26 瑞声科技(新加坡)有限公司 Loudspeaker box
WO2021138951A1 (en) * 2020-01-09 2021-07-15 瑞声声学科技(深圳)有限公司 Speaker enclosure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021138951A1 (en) * 2020-01-09 2021-07-15 瑞声声学科技(深圳)有限公司 Speaker enclosure
CN111343542A (en) * 2020-03-05 2020-06-26 瑞声科技(新加坡)有限公司 Loudspeaker box

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