CN208638671U

CN208638671U - Loudspeaker enclosure

Info

Publication number: CN208638671U
Application number: CN201821282965.4U
Authority: CN
Inventors: 陈志臣; 陈建伟
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2018-08-09
Filing date: 2018-08-09
Publication date: 2019-03-22
Anticipated expiration: 2028-08-09

Abstract

The utility model provides a kind of loudspeaker enclosure comprising surrounds the upper cover and lower cover of accommodating space, and the fixed loudspeaker monomer being contained in the accommodating space；The accommodating space is separated into ante-chamber and the back cavity opposite with the ante-chamber by the loudspeaker monomer, and the loudspeaker enclosure further includes the plate in the back cavity；The plate includes the first plane and tilts the second plane extended from first plane and be directed away from the third plane of the direction extension of first plane from the end of second plane；The side wall of the protrusion in the back cavity is provided on the upper lid, the side wall, the upper cover and the plate surround the sound absorption cavity for filling out sound-absorbing material of closure.It compares and sound absorption cavity is closed using plane net cloth in the prior art, the sound absorption cavity of the loudspeaker enclosure includes that there are three the plates of sequentially connected plane for tool, can increase the volume of sound absorption cavity under conditions of lower cover shape allows, promote loudspeaker enclosure performance.

Description

Loudspeaker enclosure

[technical field]

The utility model relates to electroacoustic field, a kind of particularly loudspeaker enclosure.

[background technique]

Loudspeaker enclosure is the important acoustic element of portable electronic device, to complete between electric signal and voice signal Conversion.As the cavity volume of loudspeaker enclosure is smaller and smaller, in order to enable loudspeaker can play good performance, mould is reduced The resonance frequency of group improves sound quality, and technical staff would generally add sound-absorbing material in back cavity, to sponge part sound Can, it is equivalent to the volume for expanding back cavity, to achieve the effect that reduce mould group resonance frequency.

In the prior art, as depicted in figs. 1 and 2, loudspeaker monomer 12, loudspeaking are contained in the accommodating space of loudspeaker enclosure The back cavity of device case includes the sound absorption cavity for being filled with sound-absorbing material, and sound absorption cavity is limited to generally by plane screen cloth hot pressing in plastic housing Heat pressing process, screen cloth 13 cannot have bending, therefore cause sound-absorbing particle of the portion profile there are the loudspeaker enclosure of high and low fall The less problem of filling amount, influences properties of product.

[utility model content]

To solve the above-mentioned problems, the utility model provides a kind of loudspeaker enclosure, the upper cover including surrounding accommodating space And lower cover, and the fixed loudspeaker monomer being contained in the accommodating space；The loudspeaker monomer is by the accommodating space It is separated into ante-chamber and the back cavity opposite with the ante-chamber, the loudspeaker enclosure further includes the plate in the back cavity；It is described Plate includes the first plane and is directed away from from the second plane of the first plane inclination extension and from the end of second plane The third plane that the direction of first plane extends；The side wall of the protrusion in the back cavity is provided on the upper lid, The side wall, the upper cover and the plate surround the sound absorption cavity for filling out sound-absorbing material of closure.

As an improvement second plane is prolonged from first plane towards the inclination close to the direction of the lower cover It stretches.As an improvement the top of the side wall with the plate is seamless matches.

As an improvement the plate includes the metallic support and screen cloth that fitting is integrated.

As an improvement the metallic support is stainless steel stent.

As an improvement the metallic support and the screen cloth are bonded by Hot melt adhesive tape.

As an improvement the screen cloth includes following any: non-woven fabrics, dust-proof screen cloth and Metal screen cloth.

The beneficial effects of the utility model are: the sound absorption cavity of the loudspeaker enclosure of the utility model includes that there are three successively connect tool The plate of the plane connect can increase the volume of sound absorption cavity, promote loudspeaker enclosure performance under conditions of lower cover shape allows.

[Detailed description of the invention]

Fig. 1 is the schematic perspective view of loudspeaker enclosure sector structure in the prior art；

Fig. 2 is the schematic cross-section in the direction AA ' in Fig. 1；

Fig. 3 is the schematic perspective view of the loudspeaker enclosure sector structure in the utility model embodiment；

Fig. 4 is the schematic cross-section in the direction BB ' in Fig. 3；

Fig. 5 is the stereochemical structure decomposing schematic representation of the loudspeaker enclosure sector structure in the utility model embodiment.

[specific embodiment]

The utility model is described in further detail below by specific embodiment combination attached drawing 1 to Fig. 5, so as to energy The advantages of enough more fully understanding the embodiment of the utility model and its various aspects.Below in an example, it provides in detail below The purpose of embodiment is easy for becoming apparent from present disclosure thorough explanation, rather than to the limit of the utility model System.Wherein the words of the indicating positions such as upper and lower, left and right be only for shown structure in respective figure for position.

Embodiment 1

As shown in figure 3, loudspeaker enclosure provided by the embodiment of the utility model includes surrounding the upper cover 21 of accommodating space under Lid (not shown), and the fixed loudspeaker monomer 22 being contained in accommodating space；Loudspeaker monomer 22 is by accommodating space It is separated into ante-chamber and the back cavity opposite with ante-chamber, loudspeaker enclosure further includes plate 23. in back cavity as shown in figure 4, plate 23 include the first plane 2331 and the second plane 2332 for extending from the inclination of the first plane 2331 and from the end of the second plane 2332 End is directed away from the third plane 2333 that the direction of the first plane 2331 extends；The protrusion in back cavity is provided in upper cover 21 Side wall 211, side wall 211, upper cover 21 and plate 23 surround the sound absorption cavity for filling out sound-absorbing material of closure.

Wherein, the second plane 2332 tilts towards the direction close to lower cover from the first plane 2331 and extends.In the prior art, As depicted in figs. 1 and 2, screen cloth is pressed to the side wall for surrounding sound absorption cavity by the place open at one end of sound absorption cavity by the way of hot pressing On, screen cloth 13 cannot be bent, and each section height of the side wall 111 in upper cover 11 is identical.It and is not smooth feelings in lower cover Under condition, the space of back cavity cannot be made full use of.In the utility model embodiment, as shown in Figure 3 and Figure 4, sound absorption cavity is by side wall 211, upper cover 21 and plate 23 surround, and there are three connected plane, top and the seamless phases of plate 23 of side wall 211 for the tool of plate 23 Cooperation, that is to say, that the top of side wall 211 has different height.In this manner it is possible to rear cavity space is utilized as wide as possible, As shown in Figure 2 and Figure 4, the volume of the sound absorption cavity of loudspeaker enclosure in the prior art is less than the loudspeaking in the utility model embodiment The volume of the sound absorption cavity of device case, thus the sound absorption cavity in the utility model embodiment can effectively increase sound absorption cavity volume, be promoted Acoustical behavior.

In the utility model embodiment, as shown in figure 5, plate 23 includes the metallic support 231 and net that fitting is integrated Cloth 233, specifically, the metallic support 233 can be stainless steel stent.Stainless steel stent 231 and screen cloth 233 pass through Hot melt adhesive tape 232 bondings.In adhesion process, using heat pressing process, binding force is good between stainless steel stent and screen cloth, and the plate of formation is reliable Property is higher.

Here, screen cloth 233 can be non-woven fabrics, dust-proof screen cloth or Metal screen cloth.After sound can be perforated through screen cloth, it can be inhaled Sound-absorbing particle 24 in sound chamber absorbs.

Compared with prior art, it compares and sound absorption cavity, the suction of the loudspeaker enclosure is closed using plane net cloth in the prior art Sound chamber includes that there are three the plates of sequentially connected plane for tool, can increase sound absorption cavity under conditions of lower cover shape allows Volume promotes loudspeaker enclosure performance.

Above-described is only the embodiments of the present invention, it should be noted here that for the ordinary skill of this field For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to it is practical Novel protection scope.

Claims

1. a kind of loudspeaker enclosure comprising surround the upper cover and lower cover of accommodating space, and fixation is contained in the accommodating space Interior loudspeaker monomer；The accommodating space is separated into ante-chamber and the back cavity opposite with the ante-chamber by the loudspeaker monomer, It is characterized in that, the loudspeaker enclosure further includes the plate in the back cavity；

The plate includes the first plane and the second plane for extending from first plane inclination and from second plane End is directed away from the third plane that the direction of first plane extends；

The side wall of the protrusion in the back cavity is provided on the upper lid, the side wall, the upper cover and the plate enclose At the sound absorption cavity for filling out sound-absorbing material of closure.

2. loudspeaker enclosure according to claim 1, which is characterized in that second plane is leaned on from the first plane direction The direction of the nearly lower cover, which tilts, to be extended.

3. loudspeaker enclosure according to claim 2, which is characterized in that the top of the side wall and the seamless phase of the plate Cooperation.

4. loudspeaker enclosure according to claim 3, which is characterized in that the plate includes the metallic support that fitting is integrated And screen cloth.

5. loudspeaker enclosure according to claim 4, which is characterized in that the metallic support is stainless steel stent.

6. loudspeaker enclosure according to claim 5, which is characterized in that the metallic support and the screen cloth pass through hot melt adhesive Band bonding.

7. according to the described in any item loudspeaker enclosures of claim 4 to 6, which is characterized in that the screen cloth includes following any: Non-woven fabrics, dust-proof screen cloth and Metal screen cloth.