CN220422023U

CN220422023U - Horn and loudspeaker

Info

Publication number: CN220422023U
Application number: CN202320346044.4U
Authority: CN
Inventors: 曾山
Original assignee: Guangzhou Meizhen Electronic Technology Co ltd
Current assignee: Guangzhou Meizhen Electronic Technology Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2024-01-30
Anticipated expiration: 2033-02-27

Abstract

The utility model discloses a horn and a loudspeaker, which comprise a shell and a phase plug, wherein an inner cavity is arranged in the shell, a first opening and a second opening which is opposite to the first opening are arranged on the surface of the shell, the first opening and the second opening are communicated with the inner cavity, the phase plug is arranged in the inner cavity and is arranged at intervals with the inner wall of the inner cavity to form an acoustic wave channel, the acoustic wave channel is communicated with the first opening and the second opening, the acoustic wave channel comprises a first sound channel and a second sound channel which are sequentially arranged, the width of the second sound channel is gradually reduced from one end, close to the first sound channel, of the second sound channel to one end, far away from the first sound channel, and the horn and the loudspeaker can provide matched acoustic impedance for sound output of the loudspeaker, so that the output efficiency of the horn is improved on the premise of meeting the use requirement.

Description

Horn and loudspeaker

Technical Field

The utility model relates to the technical field of sound, in particular to a horn and a loudspeaker.

Background

The loudspeaker mainly converts electric energy into sound energy through physical effect, namely electroacoustic transducer, its structure makes the voice coil vibrate back and forth in the magnetic air gap with time by means of the intensity and direction of current flowing through the voice coil, and fixes the vibrating diaphragm (cone) on the voice coil, and the vibrating diaphragm vibrates up and down by the voice coil, so that the vibrating diaphragm radiates sound wave outwards, and the conversion between the electric sound energy is realized.

The existing loudspeakers are of various types, and if the loudspeakers are distinguished in a sound radiation mode, the loudspeakers can be divided into a direct radiation type loudspeaker which directly radiates sound to air and an indirect radiation type loudspeaker which radiates sound to air through a horn. The existing horn type speaker structure mainly comprises: the device comprises a shell, a waveguide, a driver and the like, wherein one end of the shell is provided with a second opening which is round, and the opposite end is provided with a first opening which is in an elongated square shape; the waveguide part is arranged inside the shell and is a solid body, the outline section is diamond-shaped, the outer peripheral surface of the waveguide part is provided with a positioning body, and the positioning body is assembled on the shell; the driver comprises a voice coil and a vibrating diaphragm, and is arranged at the second opening of the shell. When the voice coil is electrically connected with an external power supply and the vibrating diaphragm vibrates, the vibrating diaphragm concentrates the radiation sound wave at one point (the sound wave at the moment is of a point sound source type), then the sound wave is transmitted along the waveguide part and along the space between the sound wave and the shell, the sound wave is converted into an annular sound wave along the diamond upper section of the waveguide part and along the space between the sound wave and the shell, then the annular sound wave continues to be collected into a first opening gradually along the diamond lower section of the waveguide part, the annular sound wave is converted into a linear sound source, and finally the converted linear sound source is transmitted through the first opening.

However, in the conventional horn type speaker, for example, patent No. 2022204335593, the application of the name horn and the speaker, the sound wave can be naturally converted into a linear sound source without interference, but the input end is in a structure of big end to small end, so that when the sound is input, the acoustic impedance is too high, and the output efficiency of the horn is low.

Disclosure of Invention

In order to overcome the defects in the prior art, one of the purposes of the utility model is to provide a horn which can provide matched acoustic impedance for the output sound of a loudspeaker, so that the output efficiency of the horn is improved on the premise of meeting the use requirement.

Another object of the present utility model is to provide a speaker.

One of the purposes of the utility model is realized by adopting the following technical scheme:

a horn, comprising:

the shell is internally provided with an inner cavity, the surface of the shell is provided with a first opening and a second opening which is opposite to the first opening, and the first opening and the second opening are communicated with the inner cavity;

the phase plug is arranged in the inner cavity and is arranged with the inner wall of the inner cavity at intervals to form an acoustic wave channel, the acoustic wave channel is communicated with the first opening and the second opening, the acoustic wave channel comprises a first sound channel and a second sound channel which are sequentially arranged, and the width of the second sound channel is gradually reduced from one end, close to the first sound channel, to one end, far away from the first sound channel.

Further, one end of the phase plug extends out of the first opening to form a guide angle, the guide angle is matched with the inner edge of the first opening and encloses a sound outlet communicated with the first sound channel, and the width of the sound outlet is equal to the width of the first sound channel along the width direction of the first opening.

Further, the inner cavity comprises a first cavity section and a second cavity section which are arranged one by one and are mutually communicated, the first cavity section is communicated with the first opening, the second cavity section is communicated with the second opening, the inner diameter of the first cavity section gradually expands from one end, close to the second cavity section, of the first opening to the direction of the first opening along the length direction of the first opening, the cross section profile of the first cavity section along the width direction of the first opening is diamond-shaped, and the inner diameters of the second cavity section are equal everywhere;

the phase plug comprises a first section and a second section which are arranged one by one, wherein the first section is inserted in the first cavity section and is arranged with the inner wall of the first cavity section at intervals to form the first sound channel, the outer contour of the first section is matched with the inner contour of the first cavity section, and the second section is inserted in the second cavity section and is arranged with the inner wall of the second cavity section at intervals to form the second sound channel.

Further, the phase plug comprises a fixing piece which is arranged on the outer surface of the phase plug and is suitable for fixedly connecting the phase plug with the shell.

Further, the first opening is rectangular, and the second opening is circular.

Further, the casing includes first casing section and the second casing section that sets up one by one, be provided with on the first casing section first opening, be provided with on the second casing section the second opening, the external diameter of first casing section is followed first open-ended length direction is followed it is close to first casing section's one end orientation first opening direction diverging, just first casing section is followed first open-ended width direction's cross-section profile is diamond-shaped setting, be provided with the linking arm on the outer wall of first casing section, the external diameter everywhere of second casing section equals, just the second casing section is kept away from first casing section's tip sets up the holding ring, the holding ring is arranged in inserting with the speaker laryngeal.

Further, an outlet line is formed at one end of the first section near the first opening, an inlet point is formed at one end of the second section near the second opening, and lengths of curves from the inlet point to the outlet line along the outer surface of the phase plug are equal everywhere.

Further, the first section is frustum-shaped and is truncated by two planes, and two the planes cross the diameter of the great one end of first section and do not intersect with the little one end of first section, two the plane is followed the diameter symmetry of the great one end of first section, the second section is loudspeaker-shaped, just the great one end of second section with the little one end diameter of first section equals, just the great one end of second section with the little one end of first section is connected and smooth transition.

Further, the outer contour of the end of the first housing section adjacent to the first opening is rectangular.

Further, the end portion of the first housing section adjacent to the first opening is provided with connecting arms on opposite sides in the width direction of the first opening.

a loudspeaker comprises a loudspeaker body and the horn.

Compared with the prior art, the utility model has the beneficial effects that:

through setting the width of second channel to be gradually reducing from its one end that is close to first channel towards keeping away from first channel one end to can provide the acoustic impedance that matches for sound, improve output, effectively avoid sound when passing through sound wave channel, arouse the distortion because of the acoustic impedance is too high, avoid simultaneously because of the acoustic impedance is too little, lead to the too little influence of sound pressure level to use.

Drawings

FIG. 1 is a schematic view of a horn according to the present utility model;

FIG. 2 is a top view of a horn according to the present utility model;

FIG. 3 is a cross-sectional view of a horn of the present utility model taken along section B-B of FIG. 2;

FIG. 4 is a cross-sectional view of a horn of the present utility model taken along section C-C of FIG. 2;

FIG. 5 is a cross-sectional view of a horn removal phase plug of the present utility model;

FIG. 6 is a schematic diagram of a horn phase plug according to the present utility model;

fig. 7 is a schematic structural diagram of a speaker according to the present utility model;

fig. 8 is a cross-sectional view of a speaker of the present utility model;

the diagram is: 10. a housing; 101. a first opening; 102. a second opening; 103. a first chamber section; 104. a second chamber section; 105. a connecting arm; 20. a phase plug; 201. a first section; 202. a second section; 203. a guide angle; 204. a fixing member; 30. an acoustic wave channel; 301. a first channel; 302. a second channel; 40. a speaker body.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1-6, the present utility model discloses a horn comprising:

the device comprises a shell 10, wherein an inner cavity is formed in the shell 10, a first opening 101 and a second opening 102 which is opposite to the first opening 101 are formed in the surface of the shell 10, and the first opening 101 and the second opening 102 are communicated with the inner cavity;

the phase plug 20, the phase plug 20 sets up in the inner chamber to with inner wall interval setting in the inner chamber in order to form sound wave passageway 30, sound wave passageway 30 and first opening 101 and second opening 102 intercommunication, sound wave passageway 30 includes first sound channel 301 and second sound channel 302 that set gradually, and the width of second sound channel 302 tapers from its one end that is close to first sound channel 301 towards one end that is away from first sound channel 301.

In the utility model, the width of the second channel 302 is gradually reduced from one end of the second channel 302 close to the first channel 301 towards one end of the second channel 301 far away from the first channel 301, so that matching acoustic impedance can be provided for sound, output efficiency is improved, distortion caused by over high acoustic impedance when sound passes through the acoustic channel 30 is effectively avoided, and meanwhile, influence on use caused by over low sound pressure level due to over low acoustic impedance is avoided.

Meanwhile, one end of the phase plug 20 extends out of the first opening 101 and forms a guide angle 203, the guide angle 203 is matched with the inner edge of the first opening 101 and encloses an acoustic outlet communicated with the first acoustic channel, and the width of the acoustic outlet along the width direction of the first opening 101 is equal to the width of the first acoustic channel 301.

Since the conventional horn is installed in the sound box, in order to adapt to miniaturization of the sound box, it is generally required to shorten the length of the horn to reduce the volume thereof, and the acoustic channel is required to have a certain length, in order to ensure the acoustic effect thereof, it is common practice to expand the acoustic channel in the horn to the outside so as to lengthen the whole acoustic channel, that is, in the case that the length of the horn is certain, expand the width of the horn so as to lengthen the acoustic channel, but in this way, the sound generates a standing wave in the acoustic channel 30, and the greater the difference between the path in the width direction and the path in the length direction is, the greater the standing wave is, so that the efficiency of the horn is affected by the increase of the standing wave, on this basis, the guide angle 203 is arranged between the sound outlets, and the guide angle 203 can be matched with the first opening 101 and enclose the sound outlet communicating with the first pipe section, so that the path in the length direction of the acoustic channel 30 is prolonged under the condition that the length of the horn is constant, and the path difference between the length direction and the width direction of the acoustic channel 30 is reduced, so that the efficiency of the standing wave is improved.

Specifically, in this embodiment, the inner cavity includes a first cavity section 103 and a second cavity section 104 that are disposed one by one and are mutually communicated, the first cavity section 103 is communicated with the first opening 101, the second cavity section 104 is communicated with the second opening 102, the inner diameter of the first cavity section 103 gradually expands from one end of the first opening 101, which is close to the second cavity section 104, toward the first opening 101 along the length direction of the first opening 101, and the cross-sectional profile of the first cavity section 103 along the width direction of the first opening 101 is diamond-shaped, and the inner diameters of the second cavity section 104 are equal everywhere;

the phase plug 20 comprises a first section 201 and a second section 202 which are arranged one by one, the first section 201 is inserted into the first cavity section 103 and is arranged at intervals with the inner wall of the first cavity section 103 to form a first sound channel 301, the outer contour of the first section 201 is matched with the inner contour of the first cavity section 103, the second section 202 is inserted into the second cavity section 104 and is arranged at intervals with the inner wall of the second cavity section 104 to form a second channel 302, standing waves can be effectively prevented from being generated in the shell 10 by the structure, sound wave energy can be further improved, and sound quality is better.

Further, an outlet line is formed at an end of the first section 201 near the first opening 101, an inlet point is formed at an end of the second section 202 near the second opening 102, and lengths of curves from the inlet point to the outlet line along the outer surface of the phase plug 20 are equal everywhere.

Further, the first section 201 is in a frustum shape and is cut by two planes, the diameter of the two planes passing through the larger end of the first section 201 is not intersected with the smaller end of the first section 201, the two planes are symmetrical along the diameter of the larger end of the first section 201, the second section 202 is in a horn shape, the diameter of the larger end of the second section 202 is equal to the diameter of the smaller end of the first section 201, and the larger end of the second section 202 is connected with the smaller end of the first section 201 and is in smooth transition.

In order to facilitate the fixing of the phase plug 20, the embodiment further includes a fixing member 204, where the fixing member 204 is disposed on the outer surface of the phase plug 20 and is adapted to fixedly connect the phase plug 20 with the housing 10.

In addition, the first opening 101 is rectangular, and the second opening 102 is circular, so that sound waves are converted from the point sound source through the sound wave channel 30, and then are diffused through the first opening 101 to form a linear sound source, so that the sound waves diffused by other speakers are prevented from being interfered.

In this embodiment, the housing 10 includes a first housing section and a second housing section that set up one by one, be provided with first opening 101 on the first housing section, be provided with second opening 102 on the second housing section, the external diameter of first housing section is along the length direction of first opening 101 from its one end that is close to first housing section towards first opening 101 direction diverging, and the cross-section profile of first housing section along the width direction of first opening 101 is diamond-shaped setting, be provided with linking arm 105 on the outer wall of first housing section, specifically, the tip that first housing section is close to first opening 101 all is provided with linking arm 105 along the opposite sides of the width direction of first opening 101, the external diameter everywhere of second housing section equals, and the tip that the second housing section kept away from first housing section sets up the holding ring, the holding ring is arranged in inserting with the speaker laryngeal in, this structure is more convenient with the assembly of number angle on the speaker, do benefit to reducing the assembly degree of difficulty, simultaneously, also can not cause the interference to the speaker.

In this embodiment, the outer contour of the end of the first housing section near the first opening 101 is rectangular, so as to facilitate the user to assemble the horns on two adjacent speakers in an array.

As shown in fig. 7 and 8, the utility model also discloses a speaker, which comprises a speaker body 40 and the horn.

The width of the second channel 302 is gradually reduced from one end, close to the first channel 301, to the end, far away from the first channel 301, of the loudspeaker, so that matching acoustic impedances can be provided for sound, output efficiency is improved, distortion caused by overhigh acoustic impedances when the sound passes through the acoustic channel 30 is effectively avoided, and meanwhile, the influence on use caused by overlow sound pressure level due to overlow acoustic impedances is avoided.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. A horn, comprising:

the device comprises a shell (10), wherein an inner cavity is formed in the shell (10), a first opening (101) and a second opening (102) which is opposite to the first opening (101) are formed in the surface of the shell (10), and the first opening (101) and the second opening (102) are communicated with the inner cavity;

the phase plug (20), the phase plug (20) set up in the inner chamber, and with inner chamber inner wall interval sets up in order to form sound wave passageway (30), sound wave passageway (30) with first opening (101) with second opening (102) intercommunication, sound wave passageway (30) are including first sound channel (301) and second sound channel (302) that set gradually, the width of second sound channel (302) is from its one end that is close to first sound channel (301) towards keeping away from first sound channel (301) one end tapering.

2. A horn according to claim 1, characterized in that: one end of the phase plug (20) extends out of the first opening (101) and forms a guide angle (203), the guide angle (203) is matched with the inner edge of the first opening (101) and encloses an acoustic outlet communicated with the first sound channel (301), and the width of the acoustic outlet is equal to the width of the first sound channel (301) along the width direction of the first opening (101).

3. A horn according to claim 2, characterized in that: the inner cavity comprises a first cavity section (103) and a second cavity section (104) which are arranged one by one and are mutually communicated, the first cavity section (103) is communicated with the first opening (101), the second cavity section (104) is communicated with the second opening (102), the inner diameter of the first cavity section (103) gradually expands from one end, close to the second cavity section (104), of the first opening (101) to the direction of the first opening (101) along the length direction of the first opening, the cross section profile of the first cavity section (103) along the width direction of the first opening (101) is diamond-shaped, and the inner diameters of the second cavity section (104) are equal at all positions;

the phase plug (20) comprises a first section (201) and a second section (202) which are arranged one by one, wherein the first section (201) is inserted into the first cavity section (103) and is arranged at intervals with the inner wall of the first cavity section (103) to form a first sound channel (301), the outer contour of the first section (201) is matched with the inner contour of the first cavity section (103), and the second section (202) is inserted into the second cavity section (104) and is arranged at intervals with the inner wall of the second cavity section (104) to form a second sound channel (302).

4. A horn according to claim 3, characterized in that: an outlet line is formed at one end of the first section (201) close to the first opening (101), an inlet point is formed at one end of the second section (202) close to the second opening (102), and lengths of curves from the inlet point to the outlet line along the outer surface of the phase plug (20) are equal.

5. A horn according to claim 3, characterized in that: the first section (201) is in a frustum shape and is cut by two planes, the two planes pass through the diameter of the larger end of the first section (201) and are not intersected with the smaller end of the first section (201), the two planes are symmetrical along the diameter of the larger end of the first section (201), the second section (202) is in a horn shape, the diameter of the larger end of the second section (202) is equal to the diameter of the smaller end of the first section (201), and the larger end of the second section (202) is connected with the smaller end of the first section (201) and is in smooth transition.

6. A horn according to claim 1, characterized in that: the first opening (101) is rectangular, and the second opening (102) is circular.

7. A horn according to claim 1, characterized in that: the shell (10) comprises a first shell section and a second shell section which are arranged one by one, the first shell section is provided with a first opening (101), the second shell section is provided with a second opening (102), the outer diameter of the first shell section is gradually widened along the length direction of the first opening (101) from one end of the first shell section, which is close to the first shell section, to the direction of the first opening (101), the first shell section is arranged in a diamond shape along the section outline of the width direction of the first opening (101), the outer wall of the first shell section is provided with a connecting arm (105), the outer diameter of the second shell section is equal everywhere, the end part of the second shell section, which is far away from the first shell section, is provided with a positioning ring, and the positioning ring is used for being inserted into a throat of a loudspeaker.

8. A horn according to claim 7, characterized in that: the outer contour of the end of the first housing section, which is close to the first opening (101), is rectangular.

9. A horn according to claim 7, characterized in that: the end portion of the first housing section, which is close to the first opening (101), is provided with connecting arms (105) on both opposite sides in the width direction of the first opening (101).

10. A loudspeaker, characterized by: comprising a speaker body (40) and a horn according to any one of claims 1-8.