CN201590890U

CN201590890U - Drum structure of loudspeaker

Info

Publication number: CN201590890U
Application number: CN2009202207294U
Authority: CN
Inventors: 吴国政
Original assignee: DONGGUAN BAIHESHENG ELECTRONICS Co Ltd
Current assignee: DONGGUAN BAIHESHENG ELECTRONICS Co Ltd
Priority date: 2009-11-02
Filing date: 2009-11-02
Publication date: 2010-09-22
Anticipated expiration: 2019-11-02

Abstract

The utility model discloses a drum structure of a loudspeaker, which comprises a drum and an annular edge material, wherein the upper part edge of the drum is fixed on an inner ring of the edge material; and the drum comprises an upper-layer drum formed by injection plastic at one step and a lower-layer drum. The drum structure has the advantages of simple process, low defective rate, high SPL (sound pressure level) value and less possibility of ageing.

Description

A kind of loud speaker drum paper structure

Technical field

The utility model relates to a kind of bulging paper structure, particularly relates to a kind of compound bulging paper structure that is used for loud speaker.

Background technology

Conventional loudspeakers drum paper is made up of drum ply of paper and annular sapwood, as disclosed a kind of loud speaker drum paper among the Chinese patent literature CN2867781Y, comprise by bond the successively bulging ply of paper (trunk) that forms and the ring limit that is used for fixing the annular of described bulging ply of paper of various material material layer and forming.But in the prior art, the complex procedures of preparation drum ply of paper need cause drum paper fraction defective higher unlike material material layer boning in layer; It is compound to adopt solid to bond, and the loudspeaker sound performance can be influenced by binding agent, and SPL (sound pressure level) is on the low side, and the sound adjustment is difficult for, in addition, and after the ageing test test, the existing ageing time of the compound loud speaker drum paper structure of solid bonding that adopts is short, and useful life is corresponding shorter.

The utility model content

The utility model is in order to overcome defective in the above-mentioned prior art, provides a kind of and has adopted having that one-step moulding method makes preparation section is simple, SPL value is higher and the bulging paper structure of the compound loudspeaker of long service life.

The utility model provides a kind of loud speaker drum paper structure, comprises trunk and annular sapwood, and on described trunk top edge was fixed in and encircles in the described sapwood, described trunk comprised the upper strata trunk by the injected plastics material single injection-molded, and lower floor's trunk.

In the technique scheme, described upper strata trunk is the single layer structure by at least a injected plastics material injection mo(u)lding among ABS, PC, PS, PP, PA, the PMMA.

In the technique scheme, described upper strata trunk is the single layer structure by the injection mo(u)lding of PP material.

In the technique scheme, the single layer structure that described lower floor trunk cuts into for paper, cloth or foam material by sheet, it is sheathed on the trunk outside, described upper strata.

In the technique scheme, described sapwood is made of foam, rubber, cloth or plasthetics.

In the technique scheme, described trunk flare is on Kuan Kou is fixed at the edge and encircles in the sapwood.

The beneficial effect that the utlity model has: owing to adopted the trunk structure of single injection-molded in the drum of the loud speaker in the utility model paper structure, there is not the solid bonding process of using in the whole preparation section, can simplify the preparation section of bulging paper structure on the one hand greatly, reduce the fraction defective of loud speaker drum paper, on the other hand, compared to the loud speaker drum paper that adopts traditional bonding process preparation, loud speaker drum paper in the utility model has higher SPL value, through the senile experiment testing authentication, its ageing time also is longer than traditional loud speaker drum paper far away.

In addition, can change the material in the trunk of upper strata, thereby adjust loudspeaker sound flexibly according to the loud speaker real needs.

Description of drawings

Fig. 1 is a compound bulging paper decomposition elevation in the utility model;

Fig. 2 is a compound bulging paper exploded perspective view among Fig. 1;

Fig. 3 is a compound bulging paper product three-dimensional view among Fig. 1;

Fig. 4 is a compound bulging paper product front view among Fig. 3.

Mark the following drawings mark thereon in conjunction with the accompanying drawings:

1-upper strata trunk, 2-lower floor trunk, 3-sapwood.

Embodiment

Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection range of the present utility model is not subjected to the restriction of embodiment.

Loud speaker drum paper structure as shown in Figure 1, 2 comprises flaring trunk and annular sapwood 3, and described trunk top edge is fixed in the described sapwood 3 to be encircled, and described trunk comprises the upper strata trunk 1 of single injection-molded, and lower floor's trunk 2.Wherein, described upper strata trunk 1 is the tubaeform single layer structure by the injection mo(u)lding of PP material; The tubaeform single layer structure that described lower floor trunk 2 cuts into for paper, cloth or foam material by sheet, it is sheathed on trunk 1 outside, described upper strata and shape matches with upper strata trunk 1; Described sapwood 3 is made of foam, rubber, cloth or plasthetics.Certainly, can be according to the concrete needs of using of loud speaker, change injected plastics material in the trunk 1 of upper strata, as adopt among commercially available ABS (acrylonitrile-butadiene-styrene copolymer), PC (polychloroprene), PS (polystyrene), PP (polypropylene), PA (polyamide), the PMMA (tool acrylamide) any one or multiple material to carry out injection mo(u)lding, can obtain the upper strata trunk of making by unlike material 1.By changing upper strata trunk 1 injected plastics material, can realize adjusting flexibly the purpose of loudspeaker sound effect.

The preparation section of the loud speaker drum paper structure in the utility model is: according to position shown in Fig. 1,2 upper strata trunk 1 is sheathed in lower floor's trunk 2, and two-layer trunk wide mouth end edge is fixedly connected in the annular sapwood 3 on the ring edges, promptly finish the preparation section of loud speaker drum paper structure.

More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection range of the present utility model.

Claims

1. a loud speaker drum paper structure comprises trunk and annular sapwood, and on described trunk top edge was fixed in and encircles in the described sapwood, it is characterized in that: described trunk comprised the upper strata trunk by the injected plastics material single injection-molded, and lower floor's trunk.

2. bulging paper structure according to claim 1 is characterized in that: described upper strata trunk is the single layer structure by the injection mo(u)lding of PP material.

3. bulging paper structure according to claim 1 is characterized in that: the single layer structure that described lower floor trunk cuts into for paper, cloth or foam material by sheet, it is sheathed on the trunk outside, described upper strata.

4. bulging paper structure according to claim 1 is characterized in that: described sapwood is made of foam, rubber, cloth or plasthetics.

5. according to any described bulging paper structure of claim 1 to 4, it is characterized in that: described trunk flare, on Kuan Kou is fixed at the edge and encircles in the sapwood.