CN219305011U

CN219305011U - Sound box with adjustable sound beam directivity

Info

Publication number: CN219305011U
Application number: CN202320191354.3U
Authority: CN
Inventors: 赖连洪; 王海山
Original assignee: Guangzhou Shengtuo Electronic Co ltd
Current assignee: Guangzhou Shengtuo Electronic Co ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-07-04
Anticipated expiration: 2033-02-09

Abstract

The utility model relates to a sound box with adjustable sound beam directivity, which has the technical scheme that: comprising the following steps: the device comprises a box body, a plurality of first sound generating units and a plurality of second sound generating units, wherein a plurality of mounting holes which are in one-to-one correspondence with the plurality of first sound generating units are formed in the box body; the first sound generating units are arranged in the mounting holes in a one-to-one correspondence manner; the second sound generating units are arranged on the first sound generating units in a one-to-one correspondence manner; a controller, a frequency divider and a power amplifier are arranged in the box body; the controller is respectively connected with the first sound generating unit and the second sound generating unit through the power amplifier and the frequency divider in sequence; the method has the advantage that the sound beam directivity can be adjusted to improve the definition of sound amplification.

Description

Sound box with adjustable sound beam directivity

Technical Field

The utility model relates to the technical field of sound, in particular to a sound box with adjustable sound beam directivity.

Background

The sound column is an electric device composed of a plurality of loudspeakers and a box body. The sound column has narrow vertical directivity, so that the sound column is widely used in various places with gathering functions, such as churches, conference rooms, waiting halls, stations, subway stations and the like, but the reflectors around the places are more, so that noise interference conditions such as sound cross of sound amplification and feedback of resonance sound exist all the time, the definition of the sound amplification is reduced, and the requirement of clear broadcasting in a wide public area cannot be met, so that the sound column has room for improvement.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a sound box with adjustable sound beam directivity, which has the advantage that the sound beam directivity can be adjusted to improve the definition of sound expansion.

The technical aim of the utility model is realized by the following technical scheme: a sound box with adjustable sound beam directivity, comprising: the device comprises a box body, a plurality of first sound generating units and a plurality of second sound generating units, wherein a plurality of mounting holes which are in one-to-one correspondence with the plurality of first sound generating units are formed in the box body; the first sound generating units are arranged in the mounting holes in a one-to-one correspondence manner; the second sound generating units are arranged on the first sound generating units in a one-to-one correspondence manner; a controller, a frequency divider and a power amplifier are arranged in the box body; the controller is connected with the first sound generating unit and the second sound generating unit through the power amplifier and the frequency divider respectively.

Optionally, the first sound generating unit includes: the device comprises a supporting frame, a drum paper and a magnet fixing frame; the magnet fixing frame is arranged in the supporting frame; the supporting frame is arranged in the mounting hole; the drum paper is arranged on the supporting frame and is opposite to the magnet fixing frame.

Optionally, the second sound generating unit includes: a connecting frame, a basin frame and a basin; the connecting frame is fixed with the supporting frame; the basin stand is arranged on the connecting stand; the cone is arranged on the cone frame and is coaxially arranged with the drum paper.

Optionally, a plurality of supporting blocks for supporting the cone are arranged on the cone frame.

Optionally, a positioning groove matched with the cone is formed on the cone frame.

Optionally, a limiting rod is arranged at the lower end of the cone; and a yielding groove correspondingly adapted to the limiting rod is formed in the basin frame.

In summary, the utility model has the following beneficial effects: the first sound generating unit and the second sound generating unit are arranged on one mounting hole, and the first sound generating unit and the second sound generating unit are controlled by the controller to generate sound respectively, so that the sound beam directivity is adjusted, the sound generating effect of each first sound generating unit and each second sound generating unit is improved through the frequency divider, and the sound beam directivity can be adjusted to improve the definition of sound expansion.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of an exploded construction of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

fig. 4 is a circuit block diagram of the present utility model.

In the figure: 1. a case; 2. a first sound generating unit; 21. a support frame; 22. paper is rolled; 23. a magnet fixing frame; 3. a second sound generating unit; 31. a connecting frame; 32. a basin stand; 33. a sound basin; 4. a mounting hole; 5. a controller; 6. a frequency divider; 7. a power amplifier; 8. a support block; 9. a positioning groove; 10. a limit rod; 11. and (5) giving way.

Detailed Description

In order that the objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

The present utility model will be described in detail below with reference to the accompanying drawings and examples.

The utility model provides a sound box with adjustable sound beam directivity, which is shown in figures 1-4 and comprises: the sound box comprises a box body 1, a plurality of first sound generating units 2 and a plurality of second sound generating units 3, wherein a plurality of mounting holes 4 which are in one-to-one correspondence with the plurality of first sound generating units 2 are formed in the box body 1; the plurality of first sound generating units 2 are arranged in the plurality of mounting holes 4 in a one-to-one correspondence manner; the second sounding units 3 are arranged on the first sounding units 2 in a one-to-one correspondence manner; a controller 5, a frequency divider 6 and a power amplifier 7 are arranged in the box body 1; the controller 5 is connected with the first sounding unit 2 and the second sounding unit 3 through the power amplifier 7 and the frequency divider 6 in sequence. In practical application, according to the principle of the phenomenon of acoustic wave interference, two beams of sine waves with the same frequency meet in the process of propagation, the phenomenon of superposition to the maximum amplitude occurs at the position of each quarter wavelength of the two beams of waves, the wave crest is formed, and the phenomenon of superposition to the maximum amplitude occurs at the position of each three-quarter wavelength, and the wave trough is formed. Each time the point formed by the wave crest and the wave trough is processed into a straight line, a plurality of lines which are perpendicular to two emission points are formed, and partial non-perpendicular lines are formed, so that the wave is in a non-directional state, and when a plurality of units emit at the same time, beams which are perpendicular to the plane of the emission units are formed. Acoustic waves are also a kind of wave and also have this feature. According to this principle, more than two waves can produce a directional beam. Therefore, the first sounding unit 2 and the second sounding unit 3 are arranged on one mounting hole 4, and the first sounding unit 2 and the second sounding unit 3 are controlled to sound respectively through the controller 5, so that the directivity of sound beams is adjusted, and the sounding effect of each first sounding unit 2 and each second sounding unit 3 is improved through the frequency divider 6; in practical application, the first sound generating unit 2 is a bass sound generating unit, and the second sound generating unit 3 is a treble sound generating unit.

Further, the first sound generating unit 2 includes: a support frame 21, a drum paper 22 and a magnet fixing frame 23; the magnet fixing frame 23 is arranged in the supporting frame 21; the supporting frame 21 is arranged in the mounting hole 4; the drum paper 22 is arranged on the supporting frame 21 and faces the magnet fixing frame 23. In practical application, the magnet fixing frame 23 is provided with a magnet and a coil, wherein the coil is fixed with the drum paper 22, the electric signal sent by the controller 5 is amplified by the power amplifier 7 and then the low-frequency audio is transmitted to the coil by the frequency divider 6, and alternating current is generated in the coil and drives the drum paper 22 to vibrate up and down under the action of the magnet, so that sound is generated.

Optionally, the second sound generating unit 3 includes: a connection frame 31, a basin frame 32 and a basin 33; the connecting frame 31 is fixed with the supporting frame 21; the basin stand 32 is arranged on the connecting frame 31; the cone 33 is disposed on the cone frame 32 and coaxially with the drum paper 22. In practical application, the cone 33 is provided with a magnet, a coil and a sound membrane; the sound membrane is fixed with the coil, the electric signal sent by the controller 5 is amplified by the power amplifier 7 and then the frequency divider 6 transmits the high-frequency audio to the coil, alternating current is generated in the coil and drives the sound membrane to vibrate up and down under the action of the magnet, so that sound is generated. The cone 33 is the same as the central axis of the drum paper 22, which is beneficial to adjusting the directionality of sound beams.

Optionally, a plurality of support blocks 8 for supporting the cone 33 are provided on the cone frame 32. The arrangement of the supporting blocks 8 can facilitate the installation and positioning of the cone 33.

Further, a positioning groove 9 adapted to the cone 33 is provided on the cone frame 32. The positioning groove 9 is provided to limit the movement range of the basin 33.

Further, a limiting rod 10 is arranged at the lower end of the cone 33; the basin frame 32 is provided with a relief groove 11 correspondingly adapted to the limit rod 10. The range of movement of the basin 33 can be limited by the cooperation of the stopper rod 10 and the relief groove 11.

According to the sound box with the adjustable sound beam directivity, the sound amplification definition can be improved by adjusting the sound beam directivity.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. An acoustic enclosure with adjustable beam directivity, comprising: the device comprises a box body, a plurality of first sound generating units and a plurality of second sound generating units, wherein a plurality of mounting holes which are in one-to-one correspondence with the plurality of first sound generating units are formed in the box body; the first sound generating units are arranged in the mounting holes in a one-to-one correspondence manner; the second sound generating units are arranged on the first sound generating units in a one-to-one correspondence manner; a controller, a frequency divider and a power amplifier are arranged in the box body; the controller is connected with the first sound generating unit and the second sound generating unit through the power amplifier and the frequency divider respectively.

2. The sound box with adjustable sound beam directivity according to claim 1, wherein the first sound generating unit comprises: the device comprises a supporting frame, a drum paper and a magnet fixing frame; the magnet fixing frame is arranged in the supporting frame; the supporting frame is arranged in the mounting hole; the drum paper is arranged on the supporting frame and is opposite to the magnet fixing frame.

3. The sound box with adjustable sound beam directivity according to claim 2, wherein the second sound unit comprises: a connecting frame, a basin frame and a basin; the connecting frame is fixed with the supporting frame; the basin stand is arranged on the connecting stand; the cone is arranged on the cone frame and is coaxially arranged with the drum paper.

4. A sound box with adjustable sound beam directivity according to claim 3, characterized in that the basin stand is provided with a plurality of support blocks for supporting the basin.

5. The sound box with adjustable sound beam directivity according to claim 4, wherein a positioning groove matched with the sound basin is formed on the basin frame.

6. The sound box with adjustable sound beam directivity according to claim 5, wherein a limiting rod is arranged at the lower end of the sound box; and a yielding groove correspondingly adapted to the limiting rod is formed in the basin frame.