CN212324353U - Coaxial loudspeaker with directivity index changing function - Google Patents
Coaxial loudspeaker with directivity index changing function Download PDFInfo
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- CN212324353U CN212324353U CN202020811343.7U CN202020811343U CN212324353U CN 212324353 U CN212324353 U CN 212324353U CN 202020811343 U CN202020811343 U CN 202020811343U CN 212324353 U CN212324353 U CN 212324353U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 83
- 229910052742 iron Inorganic materials 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 6
- 230000003321 amplification Effects 0.000 abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 241001503991 Consolida Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
The utility model discloses a coaxial loudspeaker with change directive index, magnetic conduction T type iron, bass magnet steel, bass magnetic conduction board, coaxial sound generating mechanism and high pitch horn end section including high pitch driver, woofer, magnetic conduction T type iron is installed to high pitch driver sound output, the axial of magnetic conduction T type iron is hollow, high pitch horn end section is installed to magnetic conduction T type iron sound output. The utility model relates to a coaxial loudspeaker, through the combination of in addition magnetic conduction T type iron and high pitch horn end on the high pitch driver, and the contained angle of its inner wall of hollow axial of magnetic conduction T type iron is different, and its frequency response scope is wide, can simply obtain different directive index. The loudspeaker box manufactured by the coaxial loudspeaker has a series of selectable directivity indexes, so that the loudspeaker box can obtain good definition and tone in different places, and high-quality sound amplification is realized.
Description
Technical Field
The utility model relates to a speaker technical field especially relates to a coaxial loudspeaker with change directive index.
Background
Sound amplification of sound equipment in theaters, multifunctional halls, conference halls, studios, concert halls, large-space stadiums and the like is often subjected to obvious sound defects such as reflected sound, long time delay, sound focusing and the like caused by reverberation time due to different sound establishing conditions, and the timbre and the definition cannot be satisfied.
By using the linear array, although the directivity can be adjusted in the vertical direction, the left and right directions can not be adjusted. In particular, insufficient coverage of high-pitched sounds or unevenness in the coverage often appears due to inadequate sound-producing conditions, which makes the tone and definition unsatisfactory.
When outdoor sound reinforcement is carried out, obvious sound overflows a required area due to improper directivity, and the surrounding sound environment is influenced.
Therefore, it is desirable to design a coaxial speaker with a variable directivity index. The loudspeaker/sound box of the same type has selectable directivity, can perfectly meet the high tone balance of different sound fields, leads the tone color and the definition to be satisfied, and realizes high-quality sound amplification.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a coaxial loudspeaker with change directive property index is provided to solve current speaker directive property not good, can not satisfy the high pitch equilibrium of different sound fields, make tone quality and definition satisfied, realize the problem of high quality public address.
In order to achieve the above object, the utility model provides a coaxial loudspeaker with change directive index, magnetic conduction T type iron, bass magnet steel, bass magnetic conductive plate, coaxial sound generating mechanism and high pitch horn end section including high pitch driver, woofer, high pitch driver sound output end installation magnetic conduction T type iron, the axial of magnetic conduction T type iron is hollow, high pitch horn end section is installed to magnetic conduction T type iron sound output.
Preferably, the included angle of the hollow shaft of the magnetic T-shaped iron to the inner wall of the hollow shaft is 90-115 degrees.
Preferably, the magnetic conduction T-shaped iron is coaxially adhered to the upper end of the high pitch driver.
Preferably, the bass magnetic steel is coaxially sleeved on the axial outer diameter of the magnetic conduction T-shaped iron hollow shaft, and a bass magnetic conduction plate is coaxially adhered to the bass magnetic steel.
Preferably, the coaxial sound generating device is coaxially sleeved on the periphery of the high-pitch horn end section and the bass magnetic conduction plate.
Preferably, the coaxial sound generating device comprises a basin frame, a cone fixing adhesive tape, a cone, a centering sheet and a voice coil, wherein the cone fixing adhesive tape, the cone, the centering sheet and the voice coil are sequentially bonded in the basin frame by glue.
The utility model has the advantages that:
the utility model relates to a coaxial loudspeaker, through the combination of in addition magnetic conduction T type iron and high pitch horn end on the high pitch driver, and the contained angle of its inner wall of hollow axial of magnetism T type iron is different, and its frequency response scope is wide, can simply obtain different directive index. The loudspeaker box manufactured by the coaxial loudspeaker has a series of selectable directivity indexes, so that the loudspeaker box can obtain good definition and tone in different places, and high-quality sound amplification is realized.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic sectional structure diagram of the coaxial speaker of the present invention.
Fig. 2 is a schematic cross-sectional view of another coaxial speaker according to the present invention.
Fig. 3 is a schematic view of the magnetic conduction T-shaped iron and the end of the high pitch horn of the present invention.
Fig. 4 is another schematic view of the magnetic T-shaped iron and the end of the high pitch horn of the present invention.
Detailed Description
As shown in fig. 1-4, a coaxial loudspeaker with a variable directivity index comprises a high pitch driver 1, a magnetic conduction T-shaped iron 2 of a woofer, a bass magnetic steel 3, a bass magnetic conduction plate 4, a coaxial sound generating device 5 and a high pitch horn end section 6, wherein the magnetic conduction T-shaped iron 2 is installed at the sound output end of the high pitch driver 1, the magnetic conduction T-shaped iron 2 is hollow in the axial direction, and the high pitch horn end section 6 is installed at the sound output end of the magnetic conduction T-shaped iron 2.
Wherein, the included angle of the hollow shaft of the magnetic T-shaped iron 2 to the inner wall is 90-115 degrees.
Wherein, the magnetic conduction T-shaped iron 2 is coaxially adhered and installed at the upper end of the high pitch driver 1.
Wherein, bass magnet steel 3 is coaxially sleeved on the hollow axial outer diameter of the magnetic conduction T-shaped iron 2, and a bass magnetic conduction plate 4 is coaxially adhered and installed on the bass magnet steel 3.
Wherein, the coaxial sound producing device 5 is coaxially sleeved on the periphery of the high-pitch horn end section 6 and the bass magnetic conduction plate 4.
Wherein, coaxial sound generating mechanism 5 includes basin frame, cone fixed adhesive tape, cone, centering piece, voice coil loudspeaker voice coil all bond in the basin frame from the top down with glue according to the preface
As shown in fig. 1 and 2, the tweeter is composed of a tweeter driver 1, a magnetic conduction T-shaped iron 2 of a woofer and a tweeter horn end section 6, and the tweeter driver 1 and the tweeter horn end section 6 are removed to form a common woofer. The high and low loudspeakers are embedded coaxially to form a full-range loudspeaker.
The premise of realizing coaxial embedding is that the axial part of the magnetic conduction T-shaped iron 2 of the woofer is hollow, and the reason for doing so is that the magnetic conduction T-shaped iron 2 is a magnetic conduction piece, and the axial part is a magnetic conduction invalid area. The dead zone is removed, a treble channel is provided for the embedded treble driver 1, the heat dissipation capacity of the T-shaped iron is improved, and the overall weight is also reduced.
The magnetic conduction T-shaped iron 2 and the high pitch horn end section 6 form a horn of the high pitch driver, which is shown in figures 3 and 4. There is no directivity for bass propagation, and there is significant directivity for treble propagation. The shape of the acoustic channel of the horn determines the directivity of the treble.
Fig. 3 and 4 show different sound channel shapes and different directivities of high tones. If the angle a marked in the figure 3 is in a possible range and is made into the gradual change of the steps, the high pitch loudspeaker has the directional index of the steps and can meet the requirements of different places.
The 12 th item of electroacoustic parameter measurement specified in the GB/T9397-2013 direct radiation type electrodynamic loudspeaker general Specification, section 5.3 is the directivity index, and only has requirements on matched medium and high-frequency loudspeakers.
Index of directivity (D)i) Should be determined by the following formula:
in the formula:
Lax-sound pressure level measured at 1m from the reference point on the reference axis under free field conditions;
Lp-sound pressure level measured under diffuse field conditions;
t-reverberation time of the reverberation chamber, unit is second(s);
T0-the reference reverberation time is 1 s;
v-reverberation chamber volume, in cubic meters (m)3)；
V0Reference volume 1m3；
25-approximation of relevant parameters in the international system of units.
The measurement method of the directivity index is as follows in GB/T12060.5-2011 acoustic system equipment part 5: loudspeaker main performance test method 23.3.
When the coaxial loudspeaker of the design is applied, the angle a marked in fig. 3 can be made into five numerical values of 90 degrees, 96 degrees, 102 degrees, 108 degrees and 114 degrees when the part number 2(T iron) and the part number 6 (horn end section) are manufactured. The coaxial speaker has five selectable directivity indices. According to different sound establishing conditions of application places of users, the best directivity is provided, and the best sound amplification effect can be obtained.
The utility model discloses a directive property's principle is:
when the high-pitched sound is transmitted, on the axis where the throat of the sound is positioned, the closer to the throat, the louder the sound is, and the closer to the axis, the louder the sound is. This phenomenon is called that treble propagation has directivity, or directivity.
The horn-shaped horn (i.e. the combination of the magnetic conduction T-shaped iron 2 and the tweeter horn end section 6, as shown in fig. 3 and 4) is added on the sounding throat of the tweeter driver 1 (or called a tweeter head), so that the sound can be restrained from being transmitted to the designated direction as much as possible, and the sound efficiency can be improved.
The spread angle of the horn determines the distance and the circumferential extension of the high pitch. It can also be said that changing the horn mouth length and the dispersion angle changes the directivity of the tweeter.
The magnetic T-shaped iron 2 of the woofer is dug and communicated with the middle of the woofer to form a section of pipeline, and the pipeline can be used as a horn or a section of the horn. The sound production throat (on the axis) of the high pitch driver 1 is coaxially connected with the pipeline hollowed by the magnetic conduction T-shaped iron 2, and the high pitch horn with the horn is formed.
The high pitch horn end section 6 is an extension of the horn, and the directivity of the propagation of the high pitch can be changed by changing the spread angle of the horn and changing the length of the horn. In the scheme, the directivity change is obtained by changing the angle of the diffusion opening under the fixed bugle length.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. A coaxial speaker having a variable directivity index, characterized by: magnetic conduction T type iron (2), bass magnet steel (3), bass magnetic conduction board (4), coaxial sound generating mechanism (5) and high pitch horn end section (6) including high pitch driver (1), woofer, high pitch driver (1) sound output is installed on magnetic conduction T type iron (2), the axial of magnetic conduction T type iron (2) is hollow, high pitch horn end section (6) are installed to magnetic conduction T type iron (2) sound output.
2. A coaxial speaker having a variable directivity index as defined in claim 1, wherein: the included angle of the hollow shaft of the magnetic T-shaped iron (2) to the inner wall is 90-115 degrees.
3. A coaxial speaker having a variable directivity index as defined in claim 1, wherein: the magnetic conduction T-shaped iron (2) is coaxially adhered to the upper end of the high-pitch driver (1).
4. A coaxial speaker having a variable directivity index as defined in claim 1, wherein: the bass magnetic steel (3) is coaxially sleeved on the hollow axial outer diameter of the magnetic conduction T-shaped iron (2), and a bass magnetic conduction plate (4) is coaxially adhered to the bass magnetic steel (3).
5. A coaxial speaker having a variable directivity index as defined in claim 1, wherein: the coaxial sound generating device (5) is coaxially sleeved on the periphery of the high-pitch horn end section (6) and the bass magnetic conduction plate (4).
6. A coaxial speaker having a variable directivity index as defined in claim 1, wherein: coaxial sound generating mechanism (5) include basin frame, cone fixed adhesive tape, cone, centering piece, voice coil loudspeaker voice coil all bond in the basin frame from the top down with glue according to the preface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020811343.7U CN212324353U (en) | 2020-05-15 | 2020-05-15 | Coaxial loudspeaker with directivity index changing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020811343.7U CN212324353U (en) | 2020-05-15 | 2020-05-15 | Coaxial loudspeaker with directivity index changing function |
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| Publication Number | Publication Date |
|---|---|
| CN212324353U true CN212324353U (en) | 2021-01-08 |
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| CN202020811343.7U Active CN212324353U (en) | 2020-05-15 | 2020-05-15 | Coaxial loudspeaker with directivity index changing function |
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| CN (1) | CN212324353U (en) |
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- 2020-05-15 CN CN202020811343.7U patent/CN212324353U/en active Active
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240205 Address after: No. 25, Dahuai Cluster, Enping Industrial Park, Enping City, Jiangmen City, Guangdong Province, 529400 Patentee after: Guangdong Aigaoyin Video Technology Co.,Ltd. Country or region after: China Address before: 523000 Industrial Zone, Mowu community, Wanjiang District, Dongguan City, Guangdong Province Patentee before: FDB AUDIO MANUFACTURE CO.,LTD. Country or region before: China |