CN213094426U

CN213094426U - Loudspeaker box

Info

Publication number: CN213094426U
Application number: CN202022145533.2U
Authority: CN
Inventors: 张永龙; 庞泽俊
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-04-30
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses a loudspeaker sound box, which comprises an installation panel and a rear shell, wherein the installation panel is provided with a loudspeaker, an inner cavity is enclosed among the rear shell, the installation panel and the loudspeaker, and a gap is reserved between the outer edge of the installation panel and the rear shell; the loudspeaker box also comprises an air cushion, one side of the air cushion is fixedly connected with the mounting panel, the other side of the air cushion is fixedly connected with the rear shell, and the air cushion and the inner cavity body enclose an audio cavity; the air cushion comprises a plurality of hollow balls which are connected together, each hollow ball is provided with an air hole, and the air holes are arranged towards the inner cavity. The air cushion combines the installation panel and the rear shell into a whole, and the installation panel is used as a low-frequency radiator, so that the effective vibration area is increased, and more low-frequency sound energy can be radiated; the effective vibration area is large, so that the whole vibration displacement of the installation panel driven by the air cushion is relatively reduced, and the distortion is reduced; the damping characteristic of the air cushion reduces the vibration transmitted to the sound cavity by the loudspeaker and improves the signal to noise ratio; and the thickness of the whole sound box is effectively reduced.

Description

Loudspeaker box

Technical Field

The utility model relates to an electroacoustic product technical field especially relates to a speaker audio amplifier.

Background

At present, the volume of the sound box is more and more miniaturized and ultra-thin, but still lower frequency response is pursued. In order to pursue a low-frequency submarine frequency with a limited cabinet volume and an excessively thin cabinet structure, a passive radiator type speaker system is generally employed in which a passive radiator is a separate vibrating part.

The existing passive radiator is usually arranged on a certain face of the sound box, occupies a certain position, and due to space limitation, the structure cannot be implemented, so that the low-frequency performance is poor.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: a speaker enclosure with good low frequency performance is provided.

In order to solve the technical problem, the technical scheme of the utility model is that:

a loudspeaker sound box comprises an installation panel and a rear shell, wherein a loudspeaker is installed on the installation panel, an inner cavity is defined by the rear shell, the installation panel and the loudspeaker, and a gap is reserved between the outer edge of the installation panel and the rear shell; the loudspeaker box also comprises an air cushion, one side of the air cushion is fixedly connected with the mounting panel, the other side of the air cushion is fixedly connected with the rear shell, and the air cushion and the inner cavity body form an acoustic cavity; the air cushion comprises a plurality of hollow balls which are connected together, each hollow ball is provided with an air hole, and the air holes face the inner cavity.

Preferably, the inner wall of the rear shell is provided with an installation platform extending towards one side of the inner cavity, and the air cushion is fixedly arranged on the installation platform.

Preferably, the air cushion comprises a lower attaching surface, all the hollow balls are fixedly arranged on the lower attaching surface, and the lower attaching surface is fixedly arranged on the mounting table.

Preferably, the air cushion further comprises an upper attaching surface opposite to the lower attaching surface, and the upper attaching surface is fixedly connected with the mounting panel.

The air cushion also comprises connecting ribs, the connecting ribs connect all the hollow round balls into a whole, and the connecting ribs are fixedly connected with the upper binding surface.

Preferably, the air cushion is made of an elastic material.

Preferably, the number of the hollow round balls is set by the air cushion according to the required acoustic compliance.

Preferably, the air cushion is made of an elastic material with corresponding hardness according to the required acoustic compliance.

Preferably, the lower attaching surface and all the hollow spheres are of an integral structure.

Preferably, the upper binding surface, the connecting ribs and all the hollow spheres are of an integral structure.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the loudspeaker sound box comprises the installation panel and the rear shell, wherein the installation panel is provided with the loudspeaker, an inner cavity is enclosed among the rear shell, the installation panel and the loudspeaker, and a gap is reserved between the outer edge of the installation panel and the rear shell; the loudspeaker box also comprises an air cushion, one side of the air cushion is fixedly connected with the mounting panel, the other side of the air cushion is fixedly connected with the rear shell, and the air cushion and the inner cavity body enclose an audio cavity; the air cushion comprises a plurality of hollow balls which are connected together, each hollow ball is provided with an air hole, and the air holes are arranged towards the inner cavity. The air cushion combines the installation panel and the rear shell into a whole, and the installation panel is used as a low-frequency radiator, so that the effective vibration area is increased, and more low-frequency sound energy can be radiated; the effective vibration area is large, so that the whole vibration displacement of the installation panel driven by the air cushion is relatively reduced, and the distortion is reduced; the damping characteristic of the air cushion reduces the vibration transmitted to the sound cavity by the loudspeaker and improves the signal to noise ratio; meanwhile, the air cushion is a part of passive vibration and forms a whole sound cavity together with the inner cavity, so that the thickness of the whole sound box is effectively reduced; and the clearance between installation panel and the backshell prevents that the installation panel from touching the backshell inner wall and producing extra abnormal sound at the vibration in-process.

Because the inner wall of the rear shell is provided with the mounting table extending towards one side of the inner cavity, the air cushion is fixedly arranged on the mounting table, so that the air cushion is fixed at the edge part of the inner cavity and forms a sealed sound cavity with the inner cavity, and the whole thickness is effectively reduced.

The air cushion comprises a lower attaching surface, all the hollow balls are fixedly arranged on the lower attaching surface, and the lower attaching surface is fixedly arranged on the mounting table; the surface-to-surface contact connection is reliable.

The air cushion also comprises an upper binding surface which is arranged opposite to the lower binding surface, and the upper binding surface is fixedly connected with the mounting panel; the surface-to-surface contact connection is reliable.

Because the air cushion sets up the quantity of hollow ball according to required sound order, further improve low frequency performance.

Because the air cushion selects the elastic material with corresponding hardness according to the required acoustic compliance, the low-frequency performance is further improved.

To sum up, the utility model discloses a loudspeaker audio amplifier is pursuing the volume miniaturization, when ultra-thin, has had good low frequency performance.

Drawings

Fig. 1 is a schematic structural view of a speaker box according to the present invention;

fig. 2 is a cross-sectional view of the air-cushion speaker box of the present invention;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

fig. 4 is a sectional view of the air-cushion speaker box of the present invention;

fig. 5 is a cross-sectional view of another angle of the air-cushion speaker box of the present invention;

fig. 6 is a schematic structural view of the air cushion of the present invention;

fig. 7 is a cross-sectional view of the air cushion of the present invention;

in the figure: 1-rear shell, 2-installation panel, 3-loudspeaker, 4-air cushion, 40-hollow sphere, 400-air hole, 41-lower bonding surface, 42-upper bonding surface, 43-connecting rib, 5-inner cavity and 6-gap.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 7, a speaker box includes an installation panel 2 and a rear case 1, a speaker 3 is installed on the installation panel 2, an inner cavity 5 is enclosed among the rear case 1, the installation panel 2 and the speaker 3, and a gap 6 is left between the outer edge of the installation panel 2 and the rear case 1; the sound box also comprises an air cushion 4, one side of the air cushion 4 is fixedly connected with the mounting panel 2, the other side of the air cushion 4 is fixedly connected with the rear shell 1, and the air cushion 4 and the inner cavity 5 enclose a sound cavity; the air cushion 4 comprises a plurality of hollow round balls 40 which are connected together, each hollow round ball 40 is provided with an air hole 400, and the air holes 400 are arranged towards the inner cavity 5. The air cushion 4 combines the installation panel 2 and the rear shell 1 into a whole, and the installation panel 2 is used as a low-frequency radiator, so that the effective vibration area is increased, and more low-frequency sound energy can be radiated; the increase of the effective vibration area relatively reduces the whole vibration displacement of the installation panel driven by the air cushion 4, and reduces the distortion; the damping characteristic of the air cushion 4 reduces the vibration transmitted to the sound cavity by the loudspeaker 3 and improves the signal to noise ratio; meanwhile, the air cushion 4 is a part of passive vibration and forms a whole sound cavity together with the inner cavity 5, so that the thickness of the whole sound box is effectively reduced; and the clearance between installation panel 2 and backshell 1 prevents that installation panel 2 from touching the backshell 1 inner wall in the vibration process and producing extra abnormal sound.

As shown in fig. 1 to 5, the sound box is oval in this example, but the oval can be circular, rectangular, etc.; an opening is arranged on the rear shell 1, a mounting panel 2 is fixedly arranged at the opening, the shape of the air cushion 4 in the embodiment is the same as that of the rear shell 1 and is oblong, the size of the air cushion is matched with that of the rear shell 1, and the air cushion 4 is arranged at the edge to form a sound cavity with enough volume. In this example, the inner wall of the rear shell 1 is provided with an installation platform extending towards one side of the inner cavity 5, and the installation platform is fixedly provided with an air cushion 4.

As shown collectively in fig. 2 to 7, the air cushion 4 is made of an elastic material, which may be rubber, silicone, TPV (thermoplastic vulcanizate), or the like; and the air cushion 4 is made of elastic material with corresponding hardness according to the required acoustic compliance so as to obtain better diving frequency and improve the low-frequency performance of the sound box. In this embodiment, the air cushion 4 comprises a lower attaching surface 41, all the hollow spheres 40 are fixedly arranged on the lower attaching surface 41, and the lower attaching surface 41 is fixedly arranged on the mounting table; meanwhile, the air cushion 4 further comprises an upper attaching surface 42 arranged opposite to the lower attaching surface 41, and the upper attaching surface 42 is fixedly connected with the installation panel 1; the upper attaching surface 42 is in surface contact with the mounting panel 1, and the lower attaching surface 41 is in surface contact with the mounting surface, so that the air cushion 4 can be reliably fixed on the mounting surface.

As shown in fig. 7, the air cushion 4 further includes a connecting rib 43, the connecting rib 43 connects all the hollow spheres 40 into a whole, and the connecting rib 43 is fixedly connected with the upper binding surface 42; the air cushion 4 is provided with the number of the hollow spheres 40 according to the required acoustic compliance so as to obtain better diving frequency and improve the low-frequency performance of the sound box.

As shown in fig. 6 and 7, in this embodiment, the lower attaching surface 41 is integrally formed with all the hollow round balls 40; the upper attaching surface 42, the lower attaching surface 41, the connecting rib 43 and all the hollow spheres 40 are integrally structured. The air cushion 4 is integrally arranged, so that the production and the assembly are convenient, and the reliability of the loudspeaker in the use process is improved.

The utility model discloses speaker audio amplifier, air cushion and whole speaker and installation panel are in the same place, and installation panel and audio unit itself become the common radiated sound energy of low frequency irradiator. Has the following advantages:

1. the overall radiating area is much larger than the effective vibration area of the horn, and therefore more low frequency sound energy can be radiated.

2. The increase of the effective vibration area relatively reduces the whole vibration displacement of the air cushion driving panel and reduces the distortion.

3. Because loudspeaker install on the panel, the air cushion is connected with the panel case, because of the damping characteristic of air cushion, so loudspeaker transmit the vibration of sound chamber significantly reduce, have improved the SNR.

4. Because the air cushion is the passive vibration part of the sound box and forms the whole sound cavity of the loudspeaker together with the rear cavity, the thickness of the whole box body is effectively reduced.

The above-mentioned preferred embodiments of the present invention are not intended to limit the present invention, and any modifications made within the spirit and principles of the present invention, equivalent to the modifications of the speaker box, should be included within the scope of the present invention.

Claims

1. A loudspeaker sound box comprises an installation panel and a rear shell, wherein a loudspeaker is installed on the installation panel, and the loudspeaker is characterized in that an inner cavity is defined by the rear shell, the installation panel and the loudspeaker, and a gap is reserved between the outer edge of the installation panel and the rear shell;

the loudspeaker box also comprises an air cushion, one side of the air cushion is fixedly connected with the mounting panel, the other side of the air cushion is fixedly connected with the rear shell, and the air cushion and the inner cavity body form an acoustic cavity; the air cushion comprises a plurality of hollow balls which are connected together, each hollow ball is provided with an air hole, and the air holes face the inner cavity.

2. The loudspeaker box of claim 1, wherein the inner wall of the rear housing is provided with a mounting platform extending to one side of the inner cavity, and the air cushion is fixedly arranged on the mounting platform.

3. The loudspeaker box of claim 2, wherein the air cushion comprises a lower attaching surface, all the hollow round balls are fixedly arranged on the lower attaching surface, and the lower attaching surface is fixedly arranged on the mounting table.

4. The speaker enclosure of claim 3, wherein the air cushion further comprises an upper attachment surface disposed opposite the lower attachment surface, the upper attachment surface being fixedly coupled to the mounting panel.

5. The loudspeaker box of claim 4, wherein the air cushion further comprises a connecting rib, the connecting rib connects all the hollow spheres into a whole, and the connecting rib is fixedly connected with the upper binding surface.

6. The loudspeaker enclosure of any one of claims 1-5, wherein the air cushion is made of an elastic material.

7. The speaker enclosure of claim 3, wherein the lower attachment surface is integral with all of the hollow spheres.

8. The speaker enclosure of claim 5, wherein the upper attachment surface, the ribs, and all of the hollow spheres are integrally formed.