CN214381388U - Annular linear array full-directional loudspeaker - Google Patents

Abstract

The utility model discloses a full directional speaker of annular linear array, including support and the sealed lid of cover on the support, wherein be provided with bugle access mechanism and a plurality of bases of installation high pitch subassembly on the support, bugle access mechanism is by 360 annular structure of a plurality of bugle passageway range constitution. The utility model has the advantages that: the problem of phase interference among multiple sound sources annularly arranged on a cylindrical intelligent sound box is solved, a sound field in a 360-degree range tends to be uniformly distributed, and the listening consistency is good; by using the multi-loudspeaker annular array, a plurality of monomers share power, so that the power margin of a single loudspeaker is sufficient, and the performance dynamic range of the single loudspeaker is greatly improved.

Description

Annular linear array full-directional loudspeaker

Technical Field

The utility model relates to a speaker field, in particular to annular linear array is directional speaker entirely.

Background

Smart speaker and traditional audio amplifier are in acoustics angle, and the biggest difference is exactly smart speaker demand omni-directional, expects in 360 degrees omnidirectional scopes of the level of audio amplifier, can both have clear unanimous sound transmission, and the people of being convenient for can both carry out good mutual experience with smart speaker in the family optional position. The tweeter that current intelligent audio amplifier used is several kinds of direct radiation formula tweeters of generally using in the trade, divides from the vibrating diaphragm shape, has the ball top formula, W shape, toper, wave and so on, but from the radiation mode, all are direct radiation formula.

Technical characteristics of direct radiation formula high pitch loudspeaker: the direction of sound wave propagation is consistent with the vibration direction of the diaphragm; the diaphragm radiates sound waves to directly propagate to human ears in a free field without other acoustic treatment processes; the acoustic energy density is gradually reduced along with the increase of the angle along with the propagation rule of the point sound source; the larger the angle deviating from the propagation direction of the point sound source, the more the sound pressure level is attenuated; the higher the radiated sound wave frequency, the greater the amplitude of sound pressure level attenuation.

But the defects of the existing high pitch loudspeaker are also obvious:

1. in practice, the listener is positioned 90 degrees off-axis of the tweeter diaphragm. In this direction, the high frequency attenuation is severe, and the high frequency performance is poor.

2. A reflecting cone structure is used in front of the diaphragm, but the high-frequency band sound wave frequency is high, the wavelength is short, most vibration energy is absorbed and lost by cone materials when the vibration energy is incident on the surface of the reflecting cone, a small part of the vibration energy is reflected out, the higher the incident sound wave frequency is, the higher the loss is, because the available reflecting cone materials are basically plastics, the inherent frequency of the reflecting cone is in the range of 1kHz-15kHz, and the natural frequency of the reflecting cone is equivalent to the sound wave frequency radiated by a high pitch loudspeaker.

3. A plurality of high pitch loudspeakers are used to form a plurality of point sound sources which are distributed, and at any listening position around the sound box, the plurality of point sound sources have distance difference and off-axis angle difference to human ears, so that sound waves received by the ears have phase difference and time difference, sound interference is formed, and harmonic distortion is generated. The sound pressure deviation of different positions is large, and a non-uniform sound field is formed. Therefore, the tone quality is not clear enough, the details are not fine and smooth enough, and the listening experience is greatly reduced.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model provides an annular linear array is directional speaker entirely adopts following technical scheme.

The utility model provides a full directional speaker of annular linear array, includes the support and covers the sealed lid on the support, be provided with bugle access mechanism and a plurality of bases of installation high pitch subassembly on the support, bugle access mechanism is by 360 annular structure that a plurality of bugle passageways were arranged and are constituteed.

Further, the high pitch subassembly includes a plurality of tweeters, tweeter and level are 45, tweeter's vibrating diaphragm orientation is 45 downwards for the slope, and a plurality of tweeters' axis assembles to same centre of a circle.

Furthermore, the base comprises a throat for mounting the loudspeaker, and an acoustic flow channel is communicated with the throat.

Further, the acoustic flow channels are curved acoustic flow channels, and each acoustic flow channel is communicated with a plurality of horn channels.

Furthermore, the base also comprises a partition board, and the cavity in the sealing cover is divided into a plurality of sound cavities by the partition board.

Further, the high pitch subassembly includes tweeter and throat plug subassembly, the throat plug subassembly includes high pitch phase stopper and speaker mount pad, the edge of high pitch phase stopper is connected with tweeter's vibrating diaphragm, and the center of high pitch phase stopper is connected with the speaker mount pad and is formed the sound hole.

Further, the treble component also comprises a reflection cone, and the reflection cone is positioned in the tone hole.

The utility model has the advantages that: the problem of on the cylindrical intelligent audio amplifier, phase place interference between the annular installation's the multiple sound source is solved, let the sound field in 360 scopes tend to evenly distributed, and the listening sense uniformity is than better.

By using the multi-loudspeaker annular array, a plurality of monomers share power, so that the power margin of a single loudspeaker is sufficient, and the performance dynamic range of the single loudspeaker is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a speaker according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a bracket according to an embodiment of the present invention.

Fig. 3 is a schematic view of an installation structure of the high pitch assembly according to the embodiment of the present invention.

Fig. 4 is a schematic sectional structure diagram of a speaker according to an embodiment of the present invention.

Fig. 5 is a schematic longitudinal sectional view of a speaker according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a tweeter according to an embodiment of the present invention.

Fig. 7 is a schematic longitudinal sectional view of a tweeter according to an embodiment of the present invention.

Reference numbers in the figures:

1-support, 2-sealing cover, 3-high pitch component, 4-base, 41-throat, partition-42, 5-horn channel mechanism, 6-horn channel, 7-sound cavity, 8-sound channel, 31-high pitch loudspeaker, 32-mounting seat, 33-high pitch phase plug and 34-reflecting cone; 311-U iron, 312-magnet, 313-washer sheet, 314-voice coil, 315-corrugated ring, 316-front compression cavity, 317-diaphragm.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-5, an annular linear array full directional loudspeaker comprises a support 1 and a sealing cover 2 covering the support, wherein a high pitch horn channel mechanism 6 and a plurality of bases 4 for mounting high pitch components 3 are arranged on the support 1, and the horn channel mechanism 5 is a 360-degree annular structure formed by arranging a plurality of horn channels 6.

As shown in fig. 2-3, the tweeter assembly 3 is oriented at 45 ° to the horizontal plane, the diaphragm 317 of the tweeter assembly 3 is oriented at 45 ° inclined downward, and the axes of the plurality of tweeter assemblies 3 converge toward the same center.

As shown in fig. 3 to 5, the base 4 includes a throat 41 for mounting a speaker, and in communication with the throat 41 is an acoustic flow path 8, the acoustic flow path 8 being a curved acoustic flow path, each acoustic flow path 8 communicating with a plurality of horn channels 51, but each adjacent acoustic flow path 8 does not communicate. The base 4 further comprises a partition 42, and the partition 42 divides the cavity in the sealing cover into a plurality of sound cavities 7.

As shown in fig. 5-6, the tweeter assembly 3 includes a tweeter 31 and a throat plug assembly including a tweeter phase plug 33 and a speaker mount 32, an edge of the tweeter phase plug 33 is connected to a grommet 315 of the tweeter, a center of the tweeter phase plug 33 is connected to the speaker mount 32 and forms a sound hole, the tweeter assembly 3 further includes a reflection cone 34, the reflection cone 34 is a tweeter reflection cone, and the reflection cone 34 is located in the sound hole.

In other embodiments of the present invention, the tweeter may be replaced with a full-band speaker.

As shown in fig. 5-6, the tweeter 31 of the tweeter assembly includes a U-iron 311, a magnet 312 and a washer 313 are sequentially disposed in the U-iron 311, a voice coil 314 is disposed between the magnet 312 and the washer 313, an edge of the U-iron is bonded to an edge of a ring 315, and the ring 315 is an edge portion of a diaphragm 317.

After the treble phase plug 33 is bonded with the edge of the corrugated rim 315, a front compression cavity 316 is formed in the cavity in the treble phase plug 33, and the diaphragm 317 is a concave spherical surface. When the high pitch loudspeaker works, the vibration diaphragm 317 of the concave spherical surface vibrates to radiate sound waves, and the sound waves have phase difference with the sound waves of the same frequency due to the height difference of the concave spherical surface. A phase plug is arranged in front of the concave spherical surface and used for adjusting the phase difference of different areas of the diaphragm, and the phases of sound waves tend to be relatively consistent after the sound waves pass through the phase plug.

The radiation efficiency of the prior direct radiation speaker described in the background art is 2% -5%. In the embodiment of the present invention, each tweeter increases the radiation efficiency of the single speaker to 20%.

The first embodiment is as follows:

in the embodiment of the present invention, the high pitch assembly 3 takes six high pitch speakers 31 as an example, and is explained as follows:

the base of installation high pitch subassembly is six, and the base evenly divide into six equallions with annular support, and the baffle of base evenly divides into six equallions with the high pitch sound chamber that sealed lid and support formed.

The diaphragms of the six tweeters are inclined downwards by 45 degrees, and the axes converge towards a circle center.

The outer walls of six curved sound flow channels formed by each high pitch loudspeaker and the base are mapped to a horizontal plane, and the outer walls of the sound flow channels are exactly positioned on an equal dividing line of six equal parts of a circle; the tweeter and the generated sound waves pass through the progressively expanding curved acoustic flow path, and the sound waves begin to spread.

The formed six large bending sound flow channels are equally divided into 10 horn-shaped channels after entering a plane area, each bending sound flow is communicated with the 10 horn-shaped channels, sound waves enter the 10 separate plane horn-shaped flow channels after passing through the independent bending sound flow channels, and the separate horn-shaped flow channels can adjust the uniformity of sound wave diffusion.

The horn channel mechanism comprises 60 horn channels, and the partition wall of each horn channel is inwards converged to the same circle center.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a full directional speaker of annular linear array, includes the support and covers the sealed lid on the support, its characterized in that, be provided with bugle access mechanism and a plurality of bases of installation high pitch subassembly on the support, bugle access mechanism is by 360 annular structure that a plurality of bugle passageways were arranged and are constituteed.

2. The annular linear array fully directional speaker of claim 1, wherein the tweeter assembly comprises a plurality of tweeters, the tweeters being oriented at 45 ° from the horizontal, the diaphragms of the tweeters being oriented at 45 ° obliquely downward, the axes of the plurality of tweeters converging toward a common center.

3. The annular linear array fully directional speaker of claim 1, wherein the base includes a throat for mounting the speaker, and an acoustic flow channel is in communication with the throat.

4. The linear annular array omni-directional speaker of claim 3, wherein the acoustic flow channels are curved acoustic flow channels, each acoustic flow channel communicating with a plurality of horn channels.

5. The annular linear array full directivity loudspeaker of claim 3, wherein the base further comprises a baffle dividing the cavity in the sealing cover into a plurality of sound chambers.

6. The annular linear array full directional speaker of claim 1, wherein the tweeter assembly comprises a tweeter and a throat plug assembly, the throat plug assembly comprising a tweeter phase plug and a speaker mount, an edge of the tweeter phase plug being connected to a diaphragm of the tweeter, a center of the tweeter phase plug being connected to the speaker mount and forming a sound hole.

7. The annular linear array fully directional loudspeaker in accordance with claim 6, wherein the tweeter assembly further comprises a reflective cone, the reflective cone positioned within the soundhole.

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