CN112804602A

CN112804602A - Loudspeaker box

Info

Publication number: CN112804602A
Application number: CN201911112860.3A
Authority: CN
Inventors: 陈恺琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2021-05-14

Abstract

The invention provides a loudspeaker box which comprises a shell, a sound production unit and a sound guide channel, wherein the sound production unit divides an accommodating space into a front sound cavity and a rear cavity, the shell comprises a cover plate and a base, a supporting beam is arranged on the base, the supporting beam comprises a flat plate arranged in parallel with the base, an inclined plate intersecting with one end of the flat plate to form a certain angle, and a butt plate connecting the flat plate and the inclined plate, the butt plate is in butt joint with one side of the sound production unit, and a sound absorption material layer is filled between the flat plate and the inclined plate. Compared with the prior art, the loudspeaker box provided by the invention has the advantages of improved tone quality effect, stable performance and good sound production effect.

Description

Loudspeaker box

Technical Field

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

Background

With the advent of the mobile internet era, smart mobile devices such as mobile phones, notebook computers, hearing aids, etc. have developed endlessly, people have higher and higher functional requirements for their use, audio playing quality is one of their functional requirements, and a speaker box is one of the necessary conditions for realizing this high-quality audio playing.

Adopt magnetic circuit and vibration system cooperation mostly at current speaker box, come the vibration sound production, for pursuit better low frequency performance, under the prerequisite that does not change the back cavity volume, inhale the sound granule through the back cavity intussuseption, inhale the sound granule and be porous medium material, can play the effect with the increase of back cavity equivalent volume to reduce the minimum resonant frequency of speaker box, after the back cavity has filled the sound granule of inhaling of certain quantity, can lead to keeping away from the part of the air inlet position of back cavity inhale the sound granule can't play the effect of adsorbed air molecule, lead to the part inhale the effect that the sound granule can't play increase back cavity volume, thereby unable make full use of back cavity space leads to speaker box low frequency performance variation.

Therefore, there is a need to provide a new speaker box to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a novel loudspeaker box which is improved in tone quality effect, stable in performance and good in sound production effect.

In order to achieve the above object, the present invention provides a speaker box, comprising a housing having an accommodating space, a sound generating unit accommodated in the accommodating space, and a sound guiding channel formed in the accommodating space, the sound generating unit divides the accommodating space into a front sound cavity and a rear cavity, the sound guide channel communicates the front sound cavity with the outside and forms a front cavity together with the front sound cavity, the shell comprises a cover plate and a base which are matched with each other, the sounding unit is arranged on the base, the base is provided with a supporting beam, the supporting beam comprises a flat plate arranged in parallel with the base, an inclined plate which is intersected with one end of the flat plate to form a certain angle, and a butt plate which is connected with the flat plate and the inclined plate, the butt joint board butt in the one side of sound production monomer, dull and stereotyped with it has the sound absorbing material layer to fill between the swash plate.

Furthermore, the sound-absorbing material layer adopts polyester fiber sound-absorbing cotton with a porous structure.

Further, the base, the flat board and the sound production monomer form the back chamber jointly, be equipped with a plurality of through-holes on the flat board, the through-hole intercommunication the back chamber.

Further, be equipped with the baffle on the apron, the baffle certainly the apron to supporting beam extends and forms, the baffle butt in the swash plate, the baffle the apron and the swash plate forms jointly the vocal passageway, the baffle the apron with the vocal monomer forms jointly preceding vocal chamber.

Furthermore, an opening part is arranged on the baffle plate and is communicated with the front sound cavity and the sound outlet channel.

Furthermore, the outlet side of the sound outlet channel is provided with a dustproof net.

Furthermore, the side wall of the base opposite to the supporting beam is provided with a conductive terminal.

Compared with the prior art, the loudspeaker box has the advantages that the sound absorbing material layer is arranged in the supporting beam with the triangular cross section, and the rear cavity is communicated with the sound absorbing material layer through the through holes, so that the structure can effectively improve the air fluidity of the rear cavity on the premise of not additionally increasing the occupied space of the rear cavity, can fully play a role in absorbing air molecules, and fully utilizes the space of the rear cavity, so that the loudspeaker box achieves better low-frequency performance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:

fig. 1 is a cross-sectional view of a loudspeaker enclosure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the speaker box includes a housing 1 having an accommodating space 10, a sound generating unit 2 accommodated in the accommodating space 10, and a sound guiding channel 3 formed in the accommodating space 10, wherein the sound generating unit 2 divides the accommodating space 10 into a front sound cavity 101 and a rear cavity 102, and the front sound cavity 101 is communicated with the outside through the sound guiding channel 3 and forms a front cavity 100 together with the front sound cavity 101. The loudspeaker box is used for improving the acoustic performance of the sounding monomer, and meanwhile, the sounding monomer is protected, and the durability of the loudspeaker box is improved.

The casing 1 includes mutually supporting apron 11 and base 12, sound production monomer 2 is fixed to be set up on the base 12. Be equipped with a supporting beam 13 on the base 12, a supporting beam 13 include with base 12 parallel arrangement's flat board 131, with the crossing swash plate 132 that is certain angle and the connection of flat board 131 one end flat board 131 with the butt plate 133 of swash plate 132, butt plate 133 butt in one side of sound production monomer 2, flat board 131 with it has sound absorbing material layer 134 to fill between the swash plate 132.

Supporting beam 13 is used for playing the holding sound production monomer 2's effect lets simultaneously sound production monomer 2 with the interval forms the back chamber between base 12 and possesses sufficient space volume, and a supporting beam adopts the hollow triangle structure, and the sound absorbing material layer is filled to the inside, can play increase back chamber volume to improve the air flow of back chamber, improve the low frequency performance of speaker box.

The sound absorbing material layer 133 is made of polyester fiber with a porous structure, and the fibers are crossed and intertwined with each other to form a plurality of fine gaps, so that the sound absorbing effect is good and the cost is low.

The base 12, the flat plate 131 and the sound generating unit 2 together form a rear cavity, a plurality of through holes 1310 are arranged on the flat plate 131, and the through holes 1310 are communicated with the rear cavity 102. The through holes 1310 are used for the air in the rear cavity to better perform a sound absorption material layer.

Be equipped with baffle 111 on the apron 11, baffle 111 certainly the apron 11 to supporting beam 13 extends and forms, baffle 111 butt in swash plate 132, baffle 111 the apron 11 and swash plate 132 forms jointly the vocal passageway 3, baffle 111 the apron 11 with vocal monomer 2 forms jointly preceding sound chamber 101.

The baffle 111 is provided with an opening (not shown) which is communicated with the front sound cavity 101 and the sound outlet channel 3 to jointly form the front cavity 100.

The outlet side of the sound outlet channel 3 is provided with a dust screen 31. The dust screen 31 serves to prevent dust and the like in the outside air from entering into the outlet passage to degrade the audio effect.

The other side wall of the base 12 opposite to the support beam 13 is provided with a conductive terminal 14. The conductive terminal is used for being connected and electrified with an external power supply, providing electric energy for the sounding monomer and driving the sounding monomer to vibrate and sound.

The sound production monomer 2 includes the basin frame, sets up the magnetic circuit of vibration system and the vibration of drive vibration system vibration sound production in the basin frame, vibration system include vibrating diaphragm and with the voice coil loudspeaker voice coil of drive vibrating diaphragm vibration, magnetic circuit includes yoke, the main magnet steel of setting on the yoke and the magnetic conduction piece of lid on the main magnet steel, the yoke with the main magnet steel interval sets up, the main magnet steel with form an intermediate gap between the yoke, the voice coil loudspeaker voice coil hangs and establishes intermediate gap, when conductive terminal on the voice coil loudspeaker voice coil and external power source switch-on, according to lorentz magnetic force, magnetic field produces an effort to the electron to drive voice coil loudspeaker voice coil up-and-down motion between intermediate gap, drive vibrating diaphragm vibration sound production.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a loudspeaker box, including the casing that has accommodating space, accept in sound production monomer in the accommodating space and be formed at sound conduction channel in the accommodating space, sound production monomer will accommodating space separates into preceding sound chamber and back chamber, sound conduction channel will preceding sound chamber with external intercommunication and with preceding sound chamber forms preceding chamber, its characterized in that jointly: the casing is including mutually supporting apron and base, the sound production monomer sets up on the base, be equipped with a supporting beam on the base, a supporting beam include with base parallel arrangement's flat board, with crossing the swash plate that is certain angle and the connection of dull and stereotyped one end dull and stereotyped with the butt board of swash plate, the butt board butt in sound production monomer one side, dull and stereotyped with it has the sound absorbing material layer to fill between the swash plate.

2. A loudspeaker enclosure as claimed in claim 1, wherein: the sound absorbing material layer is made of polyester fiber sound absorbing cotton with a porous structure.

3. A loudspeaker enclosure as claimed in claim 1, wherein: the base, dull and stereotyped and the sound production monomer forms the back chamber jointly, be equipped with a plurality of through-holes on the dull and stereotyped, the through-hole intercommunication the back chamber.

4. A loudspeaker enclosure as claimed in claim 1, wherein: be equipped with the baffle on the apron, the baffle certainly the apron to it extends to form to prop up supporting beam, the baffle butt in the swash plate, the baffle the apron and the swash plate forms jointly the vocal passageway, the baffle the apron with the vocal monomer forms jointly preceding vocal chamber.

5. A loudspeaker enclosure as claimed in claim 4, wherein: the baffle is provided with an opening part which is communicated with the front sound cavity and the sound outlet channel.

6. A loudspeaker enclosure as claimed in claim 5, wherein: and a dust screen is arranged on the outlet side of the sound outlet channel.

7. A loudspeaker enclosure as claimed in claim 1, wherein: and the side wall of the base opposite to the supporting beam is provided with a conductive terminal.