CN106658278B

CN106658278B - Loudspeaker horn

Info

Publication number: CN106658278B
Application number: CN201611080731.7A
Authority: CN
Inventors: 唐永均
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2023-11-28
Anticipated expiration: 2036-11-30
Also published as: CN106658278A

Abstract

The invention relates to the technical field of sound products, in particular to a loudspeaker horn. The loudspeaker horn comprises a horn-shaped shell, wherein the small end of the shell is connected with a mounting seat, the large end of the shell is a face plate, the shell comprises a throat connected with the mounting seat, a plurality of manifolds are fixedly arranged in the throat, and the manifolds are communicated with two ports of the throat. The invention greatly improves the upper limit frequency of the horn.

Description

Loudspeaker horn

Technical Field

The invention relates to the technical field of sound products, in particular to a loudspeaker horn.

Background

In conventional speaker system designs, a full-frequency speaker box using a high-frequency driver and a low-frequency unit to form a two-division frequency is often encountered, and the high-frequency driver is equipped with a horn to cooperate with the low-frequency unit so that sound waves reproduced by the high-frequency driver are projected into a usage space.

According to the acoustic theory, the sound wave has sound wave reflection and interference phenomena, and when the high-frequency driver diaphragm moves forwards and backwards in a piston motion, the generated sound wave radiates outwards through the horn throat to form sound. However, not all sound waves are directly out-diffused and some sound waves will be cross-reflected at the reflective surface of the horn before being sent to the listener's ear. In a conventional horn, sound waves will be reflected first to the other side and then to the listener. Since these sound waves are actually generated at the same time but heard at different times, this process again generates a sound wave interference phenomenon with the sound waves generated by the diaphragm, which forms standing wave distortion. The phase plug can rapidly emit secondary reflection waves, so that the delay time is reduced.

The phase plug can effectively improve the frequency response characteristic, prevent standing waves and crossover distortion, enable the off-axis frequency response diffusion characteristic and the on-axis frequency response diffusion characteristic to be smoother, and avoid off-axis frequency response peak-valley phenomena frequently occurring in the horn. That is, the presence of the phase plug can effectively improve the phase behavior of the speaker, which is the name of the phase plug.

At present, a horn carried by a high-frequency driver is generally in an eight shape, a joint part of a horn shell and the high-frequency driver is a round hole and is generally called a horn throat, and the horn shell is generally outwards expanded to a large opening (a face plate) of the horn shell from the horn throat according to a certain line shape. The horn used in the high-pitch driver in the market generally has no phase plug or only uses a simple bullet phase plug, and the bullet phase plug only has a certain positive effect on the circumference uniform type 'eight' -shaped horn shell, and when the horn shell is in other shapes, the needs can not be met far.

In addition, in the prior art, the upper limit frequency of the horn of the high-frequency driver is only 16.5kHz, and a certain distance is required between the upper limit frequency and the upper limit frequency of 20kHz, which is required by high quality; the lower limit frequency of the horn of the high frequency driver is also not satisfactory.

According to the above disadvantage of the horn of the high frequency driver used in the existing market, it is necessary to invent a horn having more excellent performance in order to manufacture a more excellent speaker system.

Disclosure of Invention

In order to solve the technical problems, the invention provides the loudspeaker horn which can raise the upper limit frequency of the horn, expand the lower limit frequency and reduce the acoustic wave transmission distortion.

In order to realize the technical effects of the invention, the following technical scheme is adopted:

the utility model provides a loudspeaker horn, includes a loudspeaker form shell, the mount pad is connected to the tip of shell, and the big end is the face dish, the shell includes the choke that links to each other with the mount pad, the choke internal fixation is equipped with a plurality of manifold, the manifold is linked together with two ports of choke.

As a further improvement, the horn further comprises a deflector for diverting the sound waves of the high-frequency driver.

Of course, when the high frequency driver is connected to the housing, the high frequency driver is in close contact with the small end of the housing. The housing may be connected to the high frequency driver by a mount.

As a further improvement, a part of the flow director is arranged in the throat pipe, and the other part of the flow director is arranged outside the shell and extends into the throat groove of the high-frequency driver when the shell is connected with the high-frequency driver; the manifold is closely distributed on the periphery of the flow guider.

As a further improvement, a phase plug is also arranged in the shell, and the phase plug is partially arranged in the throat.

As a further improvement, the part of the flow director extending out of the shell is conical, and when the shell is connected with the high-frequency driver, the small head of the flow director is arranged in the throat groove, and the large head of the flow director is close to the throat; when the housing of the high frequency horn is connected to the high frequency driver, the manifold of the high frequency horn communicates with the throat of the high frequency driver.

As a further improvement, the phase plug is closely attached to one end of the deflector near the face plate.

As a further improvement, the two sides of the top of the shell are symmetrically provided with clarion lips.

As a further improvement, the outer wall of the shell is also closely provided with reinforcing ribs for resonance elimination.

As a further improvement, the top of the shell is also provided with a horn resonance reduction type position, and the manifold is in a streamline curve.

As a further improvement, the cross section of the shell is quadrilateral; the phase plug is gradually thinned from bottom to top, the front side and the rear side are sloping, the projection of the left side and the right side in the vertical direction is streamline, and the top end is arc-shaped; each side of the phase plug corresponds to a side of a quadrilateral.

The invention has the following beneficial effects:

1) According to the invention, the manifold is arranged, so that the upper limit frequency of the horn can be greatly improved.

2) The phase plug is additionally arranged on the reflecting surface of the shell (the expansion part), standing waves and crossover distortion can be prevented, so that the off-axis frequency response diffusion characteristic and the on-axis frequency response diffusion characteristic are smoother, off-axis frequency response peak-valley phenomenon frequently occurring in the horn is avoided, and horn sound is greatly reduced.

3) Because the high-frequency driver has a sounding throat, the size specification of the horn throat is generally consistent with that of the sounding throat to be matched, but the horn in the prior art is not provided with a conical horn deflector, namely a straight throat, sound focusing can be generated when the sound wave capacity is overlarge or is overlarge, namely sound wave air explosion (horn sound) is generated when the sound wave capacity is overlarge, and the sound node is separated from a bass unit when the sound wave capacity is overlarge, so that the defect of no bass or no treble is generated.

4) The horn lip is arranged, so that the length of the horn is prolonged, and the effective frequency of the lower limit of the horn is improved.

5) The reinforcing rib for removing resonance and the horn resonance reduction groove are arranged, so that the intensity of the horn is greatly increased, the mechanical vibration of the horn during working is greatly reduced, and the sound wave output of the horn is more stable.

Drawings

FIG. 1 is a schematic diagram of the horn structure of the speaker of the present invention;

FIG. 2 is a schematic view of the exterior structure of the horn of the speaker of the present invention;

FIG. 3 is a schematic view of the external front view of the horn of the speaker of the present invention;

FIG. 4 is a schematic diagram of the connection between the high frequency driver and the horn of the loudspeaker of the present invention;

wherein 1 is a horn reflecting surface; 2 is a manifold; 3 is a phase plug; 4 is the horn lip; 5 is a horn resonance abatement position; 6 is the laryngeal inlet; 7 is a deflector; 8 is a high frequency driver locking hole; 9 is a reinforcing rib; 10 is a housing; 11 is a throat; 12 is insert and position; 13 is a throat; 14 is a mounting seat, 15 is a horn mounting hole site; 16 is a high frequency driver; 17 is a throat.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The utility model provides a loudspeaker horn, includes a loudspeaker form shell 10, the mount pad 14 is connected to the tip of shell 10, and the big end is the face dish, shell 12 includes the choke 11 that links to each other with the horn driver, choke 11 internal fixation is equipped with a plurality of manifold 2, manifold 2 is linked together with two ports of choke 11. The invention can greatly raise the upper limit frequency of the horn by arranging the manifold 2.

Preferably, the horn further comprises a deflector 7 for diverting sound waves of the loudspeaker high frequency driver 16. The arrangement of the deflector 7 can shunt the sound generated by the high-frequency driver 16, so that the phenomenon of sound focusing can not occur. The speaker high frequency driver is connected with the mounting base and is arranged on one side of the mounting base far away from the shell.

Preferably, a part of the deflector 7 is arranged in the throat pipe 11, and the other part is arranged outside the shell and extends into the throat 17 of the high-frequency driver 16 when the shell is connected with the high-frequency driver 16; the manifold 2 is closely distributed around the perimeter of the deflector 7. The phase plug is additionally arranged on the reflecting surface 1 of the shell, standing waves and crossover distortion can be prevented, so that the off-axis frequency response diffusion characteristic and the on-axis frequency response diffusion characteristic are smoother, off-axis frequency response peak-valley phenomenon frequently occurring in the horn is avoided, and horn sound is greatly reduced. When the horn is connected to the high frequency driver, the sound waves of the high frequency driver first enter the throat and then exit the manifold 2.

Preferably, a phase plug 3 is further disposed in the housing 12, and the phase plug 3 is partially disposed in the throat 11.

Preferably, the part of the deflector 7 extending out of the housing is conical, and the small end of the deflector is arranged in the throat 17 when the housing is connected with the high-frequency driver, and the large end of the deflector is close to the throat 11; when the housing is connected to the high frequency driver, the manifold communicates with the throat 17 of the high frequency driver. The phase plug is tightly attached to one end of the deflector close to the face plate.

The part of the deflector 7 extending out of the housing (which may be the part extending into the throat) is conical, so that the sound can be better split. It is possible that the end of the deflector close to the faceplate is provided with a seat 12 (recess) and the phase plug 3 is partially inserted into the seat 12 (recess), of course the phase plug being provided at the top of the manifold. The phase plug is arranged at the top of the manifold, so that the turbulence of sound waves can be reduced, the distortion is reduced, the sound wave transmission efficiency is improved, and the sound wave loss is reduced. The manifold may be evenly distributed around the periphery of the phase plug.

Preferably, the mounting seat 14 may be sleeved outside the housing and integrally formed with the housing.

Preferably, the two sides of the top of the shell 10 are symmetrically provided with the horn lips 4. This lengthens the horn length, increasing the effective frequency of the lower horn limit. The clarion lips 4 may be convex with a planar inner side and a cambered outer side.

Preferably, the outer wall of the housing 10 is also provided with a reinforcing rib 9 for resonance elimination. The reinforcing ribs 9 are preferably triangular in shape, and are further stable.

Preferably, a horn resonance reduction type position 5 is further arranged at the top of the shell 10. The horn resonance reduction type position can be a bulge or a groove.

The reinforcing rib 9 for removing resonance and the horn resonance reduction type position 5 are arranged, so that the strength of the horn is greatly increased, and then the mechanical vibration of the horn during working is greatly reduced, and the sound wave output of the horn is more stable.

Preferably, the cross section of the housing 10 is quadrilateral; the phase plug 3 is gradually thinned from bottom to top, the front side and the rear side are sloping, the projection of the left side and the right side in the vertical direction is streamline, and the top end is arc-shaped; each side of the phase plug 3 corresponds to a side of a quadrilateral. Each side of the phase plug 3 corresponds to a side of a quadrilateral, meaning that a sloping surface of the phase plug is opposite an inner wall of the housing. Thus, the sound transmitted from the high-frequency driver passes through the phase plug with such a structure, so that the loss of the energy of the sound can be significantly reduced, and the sound propagation efficiency can be improved. Of course, the sides of the quadrangle may be arcs and the corners of the quadrangle may be chamfers.

Preferably, the manifold 2 is twelve; and the upper limit frequency of the horn can be raised to be more than 30 kHz.

Preferably, the manifold is preferably streamlined, and has the effect of low wind resistance and low interference.

It should be noted that the top, upper and lower of the present invention refer to the top, upper and lower when placed in the position shown in fig. 3. The speaker horn is typically a high frequency horn.

However, the foregoing is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, i.e., the invention is defined by the appended claims and their description with the full scope of equivalents to which they are entitled. Furthermore, the abstract sections and headings are provided solely for the purpose of aiding in the search of the patent document and are not intended to limit the scope of the claims.

Claims

1. The loudspeaker horn comprises a horn-shaped shell, wherein the small end of the shell is connected with a mounting seat, and the large end of the shell is a face plate; the horn also includes a deflector for diverting sound waves of the high frequency driver; one part of the flow guide is arranged in the throat, and the other part of the flow guide is arranged outside the shell and extends into the throat groove of the high-frequency driver when the shell is connected with the high-frequency driver.

2. The loudspeaker horn of claim 1 wherein the manifold is disposed closely adjacent the perimeter of the deflector.

3. A loudspeaker horn according to any one of claims 1 to 2 wherein a phase plug is also provided in the housing, the phase plug being partially provided in the throat.

4. A loudspeaker horn according to claim 3 wherein the portion of the deflector extending beyond the housing is conical and has a small head disposed in the throat and a large head adjacent the throat when the housing is connected to the high frequency driver; when the housing of the high frequency horn is connected to the high frequency driver, the manifold of the high frequency horn communicates with the throat of the high frequency driver.

5. The loudspeaker horn of claim 4 wherein the phase plug is in close proximity to an end of the deflector adjacent the face plate.

6. The loudspeaker horn of claim 1 wherein the horn lips are also symmetrically disposed on both sides of the top of the housing.

7. The loudspeaker horn of claim 1 wherein the outer wall of the housing is further provided with stiffening ribs for antiresonance.

8. The loudspeaker horn of claim 1 wherein the top of the housing is further provided with horn resonance abatement sites and the manifold is streamlined in curve.

9. A loudspeaker horn according to claim 3 wherein the cross section of the housing is quadrilateral; the phase plug is gradually thinned from bottom to top, the front side and the rear side are sloping, the projection of the left side and the right side in the vertical direction is streamline, and the top end is arc-shaped; each side of the phase plug corresponds to a side of a quadrilateral.