阅读说明：本技术 一种扬声器 (Loudspeaker ) 是由 陈敦汉 彭浩 于 2020-05-11 设计创作，主要内容包括：本发明提供了一种扬声器,所述的扬声器包括扬声器本体、用于安装扬声器本体的外壳、固定在外壳的谐振腔内的吸音材料块,所述的吸音材料块通过双面胶粘接在外壳的底部,吸音材料块为块体结构,所述吸音材料块还包括纤维,所述的纤维呈纵横交错布置。本发明的扬声器,沸石原粉颗粒中添加了纤维,双面胶通过纤维就可以固定整个吸音材料块,纤维不仅可以使吸音材料块用更少量的粘结剂实现更大的强度,不易变形和破碎,起到了补强的作用,还能够与双面胶相配合,使整个吸音材料块粘接在外壳内。该扬声器结构简单稳定,体积小。(The invention provides a loudspeaker which comprises a loudspeaker body, a shell for mounting the loudspeaker body, and a sound-absorbing material block fixed in a resonant cavity of the shell, wherein the sound-absorbing material block is bonded at the bottom of the shell through a double-sided adhesive tape, is of a block structure, and further comprises fibers, and the fibers are arranged in a criss-cross manner. According to the loudspeaker, the fibers are added into the zeolite raw powder particles, the whole sound-absorbing material block can be fixed by the double faced adhesive tape through the fibers, the fibers can enable the sound-absorbing material block to achieve higher strength by using a smaller amount of bonding agent, and the sound-absorbing material block is not easy to deform and break, plays a role in reinforcement, and can be matched with the double faced adhesive tape to enable the whole sound-absorbing material block to be bonded in the shell. The loudspeaker is simple and stable in structure and small in size.)

1. The utility model provides a loudspeaker, its characterized in that, loudspeaker include the speaker body, be used for installing the shell of speaker body, fix the sound-absorbing material piece in the resonant cavity of shell, the sound-absorbing material piece bond in the bottom of shell through the double faced adhesive tape, the sound-absorbing material piece is the block structure, the sound-absorbing material piece still includes the fibre, the fibre be vertically and horizontally staggered arrangement.

2. The loudspeaker of claim 1, wherein the fibers are present in the sound absorbing material in a mass ratio of no greater than 50%.

3. The loudspeaker of claim 1, wherein the block structure has a plurality of holes in the longitudinal direction, and sound absorbing material is filled between the holes.

4. A loudspeaker according to claim 3, wherein the centre-to-centre spacing between adjacent channels is in the range 0.05mm to 3 mm.

5. A loudspeaker as claimed in claim 4, wherein the mass of sound-absorbing material comprises particles of zeolite raw powder, a binder binding the particles of zeolite raw powder together.

6. The loudspeaker in accordance with claim 5 wherein at least a portion of the open ends of the plurality of openings in the block of sound absorbing material are exposed to the resonant cavity.

7. The loudspeaker of claim 6 wherein the particles of the zeolite raw powder of the MFI structure have an average particle size of from 100 nm to 10 microns.

8. A loudspeaker as claimed in claim 1, wherein the block of sound absorbing material is spaced from the top of the inner wall of the enclosure.

Technical Field

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

Background

With the increasing lightness and thinness of electronic products, the resonant cavity of a loudspeaker system component is smaller and smaller, the resonant frequency is increased, the sensitivity of low-frequency sound pressure is reduced, and the acoustic performance is directly influenced. In the prior art, the sound-absorbing material blocks are usually made of zeolite raw powder particles bonded by a bonding agent, and the structure is easy to fall off if the structure is bonded by a double-sided adhesive tape. In the invention patent with publication number CN20190827, sound-absorbing cotton is filled between the sound-absorbing material block and the inner wall of the speaker container to play a supporting role, and the invention patent has the defect that the sound-absorbing cotton occupies the space of the speaker housing, so that the volume of the whole speaker is increased.

Disclosure of Invention

The invention aims to provide a loudspeaker with a simple and stable structure.

In order to solve the technical problem, the invention provides a loudspeaker which comprises a loudspeaker body, a shell for mounting the loudspeaker body, and a sound-absorbing material block fixed in a resonant cavity of the shell, wherein the sound-absorbing material block is bonded at the bottom of the shell through a double-sided adhesive tape, is of a block structure, and further comprises fibers, and the fibers are arranged in a criss-cross manner.

Preferably, the mass ratio of the fibers in the sound-absorbing material is not more than 50%.

Preferably, a plurality of pore channels are arranged in the longitudinal direction of the block structure, and sound absorption materials are filled between the pore channels.

Preferably, the center-to-center distance between adjacent pore channels is 0.05mm-3 mm.

Preferably, the sound-absorbing material mass comprises zeolite raw powder particles, a binder binding the zeolite raw powder particles together.

Preferably, at least a portion of the open ends of the plurality of cells of the block of sound absorbing material are exposed to the resonant cavity.

Preferably, the particles of the zeolite raw powder of the MFI structure have an average particle size of from 100 nm to 10 microns.

Preferably, a gap is formed between the sound-absorbing material block and the top of the inner wall of the shell.

According to the loudspeaker, the fibers are added into the zeolite raw powder particles, the whole sound-absorbing material block can be fixed by the double faced adhesive tape through the fibers, the fibers can enable the sound-absorbing material block to achieve higher strength by using a smaller amount of bonding agent, and the sound-absorbing material block is not easy to deform and break, plays a role in reinforcement, and can be matched with the double faced adhesive tape to enable the whole sound-absorbing material block to be bonded in the shell. The loudspeaker is simple and stable in structure and small in size.

Drawings

Fig. 1 is a schematic structural diagram of a loudspeaker according to a first embodiment of the present application;

fig. 2 is a schematic structural diagram of a speaker according to a second embodiment of the present application;

FIG. 3 is a graph showing the variation of the frequency F0 corresponding to the peak impedance of the speaker with the gap h when the height of the inside of the housing of the speaker in the second embodiment is 4 mm;

FIG. 4 is a graph showing the variation of the frequency F0 corresponding to the peak impedance of the speaker with the gap h when the height of the inside of the housing of the speaker in the second embodiment is 5 mm;

fig. 5 is a top view of the block of sound absorbing material of the present application;

fig. 6 is a cross-sectional view of the sound-absorbing material block of the present application.

Wherein: 1. a sound absorbing material block; 2. a duct; 3. zeolite raw powder particles; 4. fibers; 5. double-sided adhesive tape; 6. a housing; 7. a speaker body; 8. a gap; 9. and (7) a supporting block.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.