CN216673288U - Low-cost loudspeaker structure - Google Patents
Low-cost loudspeaker structure Download PDFInfo
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- CN216673288U CN216673288U CN202123327350.3U CN202123327350U CN216673288U CN 216673288 U CN216673288 U CN 216673288U CN 202123327350 U CN202123327350 U CN 202123327350U CN 216673288 U CN216673288 U CN 216673288U
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Abstract
The utility model provides a low-cost loudspeaker structure which comprises an outer cover, a magnetic conductive sheet, a magnet and a magnetic conductive supplement piece, wherein the magnetic conductive sheet and the magnet are positioned on the inner side of the outer cover, the magnetic conductive sheet is positioned on the upper side of the magnet, an annular magnetic gap is formed among the magnetic conductive sheet, the magnet and the magnetic conductive supplement piece, an upward arched bulge is arranged on the lower side of the magnet, the magnet is fixed on the upper side of the bulge, and a hollow groove is formed at the lower end of the bulge. According to the horn structure, the structures of the outer cover and the magnetic conduction supplement piece are improved, so that the use of rare earth permanent magnet materials can be greatly reduced, washers are not needed, and the production cost is reduced.
Description
Technical Field
The utility model relates to the field of loudspeakers, in particular to a low-cost loudspeaker structure.
Background
The horn is also called loudspeaker, is a very common electroacoustic transducer, can change the electrical signal into the acoustical signal, its sound production principle is: when the voice coil of the loudspeaker is connected with audio current, the voice coil generates an alternating magnetic field under the action of the current, and the magnet also generates a constant magnetic field with unchanged size and direction. Because the size and the direction of the magnetic field generated by the voice coil are continuously changed along with the change of the audio current, the interaction of the two magnetic fields enables the voice coil to move in a direction vertical to the current direction in the voice coil, and the voice coil is connected with the vibrating membrane so as to drive the vibrating membrane to vibrate, and the vibrating membrane vibrates to cause the vibration of air to make sound.
The loudspeaker in the prior art generally comprises a shell, U-shaped iron, a magnet, a washer, a voice coil and a vibrating diaphragm, wherein the U-shaped iron and the magnet are made of rare earth permanent magnet materials, the structures of the U-shaped iron and the magnet are mostly solid structures, a large amount of rare earth permanent magnet materials are needed in production, the rare earth permanent magnet materials are continuously reduced along with resources, the cost of the rare earth permanent magnet materials is higher and higher, and the production cost of the loudspeaker is higher.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a low-cost horn structure, and by improving the structures of the outer cover and the magnetic conduction supplement piece, the use of rare earth permanent magnet materials can be greatly reduced, and washer is not needed, so that the production cost is reduced.
In order to achieve the purpose, the utility model is solved by the following technical scheme:
the utility model provides a low-cost horn structure, includes dustcoat, magnetic conductive plate, magnet, magnetic conduction complement, magnetic conductive plate, magnet are located the dustcoat is inboard, magnetic conductive plate is located the magnet upside, magnetic conductive plate, magnet with form an annular magnetic gap between the magnetic conduction complement, the magnet downside is equipped with the arch of upwards arching, magnet is fixed protruding upside, protruding lower extreme is formed with the fretwork groove.
Specifically, the magnet is of an annular structure.
Specifically, the protrusion is connected to the bottom of the inner cavity of the outer cover.
Specifically, the magnetic conduction supplement piece enables the outer cover and the magnetic conduction supplement piece to be integrally formed in a mode of pressurizing and thickening through the mold.
Specifically, the open end of the magnetic conduction supplement piece is sleeved with the protrusion and the outer part of the outer cover, and the magnetic conduction supplement piece is fixedly connected with the outer cover in a riveting mode.
Specifically, the magnetic conduction supplement piece is embedded into the fixing position of the outer cover, the magnetic conduction supplement piece is of an annular structure, and the magnetic conduction supplement piece is fixedly connected with the outer cover in a riveting mode.
Specifically, the protrusion is connected to the bottom of the magnetic conductive supplement piece.
Specifically, the magnetic conduction supplement piece is embedded into a fixing position of the outer cover, and the magnetic conduction supplement piece is fixedly connected with the outer cover in a riveting mode.
The utility model has the beneficial effects that:
1. according to the horn structure, the structures of the outer cover and the magnetic conduction supplement piece are improved, so that the lower side of the magnet is provided with the upward arched bulge which has a certain elastic buffering effect, the traditional washer can be replaced, the cost is reduced, the hollow groove is formed at the bottom of the bulge, compared with a conventional U-shaped iron structure, the use of rare earth permanent magnet materials can be greatly reduced, and the production cost is reduced;
2. the magnet with the annular structure is adopted, the use of rare earth permanent magnet materials is also reduced, and the production cost is reduced.
Drawings
Fig. 1 is an exploded view of a horn of example 1.
Fig. 2 is a sectional structure view of the horn of embodiment 1.
Fig. 3 is a magnetic field simulation diagram of the magnetic gap position of example 1.
Fig. 4 is an exploded view of the horn of example 2.
Fig. 5 is a sectional structure view of a horn of embodiment 2.
Fig. 6 is a magnetic field simulation diagram of the magnetic gap position of example 2.
Fig. 7 is an exploded view of the horn of example 3.
Fig. 8 is a sectional structure view of a horn of embodiment 3.
Fig. 9 is a magnetic field simulation diagram of the magnetic gap position of example 3.
Fig. 10 is an exploded view of the horn of example 4.
Fig. 11 is a sectional structure view of a horn of embodiment 4.
Fig. 12 is a magnetic field simulation diagram of the magnetic gap position of example 4.
Fig. 13 is a sectional structure view of a horn of embodiment 5.
Fig. 14 is a magnetic field simulation diagram of the magnetic gap position of example 5.
The reference signs are: the magnetic conduction device comprises an outer cover 1, a magnetic conduction sheet 2, a magnet 3, a magnetic conduction supplement piece 4, a magnetic gap 5, a protrusion 6 and a hollow groove 61.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Please refer to fig. 1-2:
a low-cost horn structure comprises an outer cover 1, a magnetic conductive sheet 2, a magnet 3 and a magnetic conductive supplement piece 4, wherein the magnetic conductive sheet 2 and the magnet 3 are positioned at the inner side of the outer cover 1, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, the carbon content is lower than 0.04 percent, the material components comprise electromagnetic pure iron, electrolytic iron and carbonyl iron, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, it is characterized by high saturation magnetization, low cost, good processing performance, and being capable of satisfying the optimal magnetic conduction and magnetic leakage prevention performance, the magnetic conductive sheet 2 is positioned on the upper side of the magnet 3, an annular magnetic gap 5 is formed among the magnetic conductive sheet 2, the magnet 3 and the magnetic conduction supplement piece 4, the magnetic gap 5 is used for placing a voice coil which is not shown in the figure, the upper end of the voice coil is connected with a diaphragm which is not shown in the figure, after the voice coil is connected with audio current, the voice coil generates an alternating magnetic field under the action of current, and the magnet 3 also generates a constant magnetic field with invariable magnitude and direction. Because the size and direction of the magnetic field generated by the voice coil are changed continuously along with the change of the audio current, the interaction of the two magnetic fields enables the voice coil to move in a direction vertical to the current direction in the voice coil, the voice coil is connected with the diaphragm, so that the diaphragm is driven to vibrate, and the vibration of the air caused by the vibration of the diaphragm generates sound;
the lower side of the magnet 3 is provided with the bulge 6 which is arched upwards, the magnet 3 is fixed on the upper side of the bulge 6, and the position of the bulge 6 has a certain elastic buffering effect, so that the traditional washer can be replaced, and the cost is reduced; in addition, in order to reduce the consumption of rare earth permanent magnet materials and on the basis of not influencing the performance such as the tone quality of a loudspeaker, the lower end of the bulge 6 is provided with a hollow groove 61, and the part of the bulge 6 can be made of low-carbon steel materials and has a certain magnetic conduction effect.
In order to further reduce the amount of rare-earth permanent magnet material, the magnet 3 of the present embodiment is designed to have a ring-shaped structure, and the hollow portion is a material-omitted portion, so that the amount of rare-earth permanent magnet material required can be reduced from 1/4 to 1/3 compared to a conventional solid magnet.
Preferably, the protrusion 6 is attached to the bottom of the cavity of the housing 1.
Preferably, the magnetic conductive supplement 4 is formed by integrally molding the outer cover 1 and the magnetic conductive supplement 4 by pressurizing and thickening the mold.
The width of the magnetic gap 5 is set to be 0.9mm, magnetic field simulation test is performed on the position of the magnetic gap 5 of the horn in embodiment 1, and the test result is shown in fig. 3, where Bl values of the magnetic gap 5 are all within a range of 0.95 ± 0.5T, which indicates that the present embodiment can still ensure that the Bl value of the magnetic gap 5 is within a higher range under the condition of reducing the use of rare-earth permanent magnet materials, so as to ensure that the tone quality of the horn is not affected.
Example 2
Please refer to fig. 4-5:
a low-cost horn structure comprises an outer cover 1, a magnetic conductive sheet 2, a magnet 3 and a magnetic conductive supplement piece 4, wherein the magnetic conductive sheet 2 and the magnet 3 are positioned at the inner side of the outer cover 1, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, the carbon content is lower than 0.04 percent, the material components comprise electromagnetic pure iron, electrolytic iron and carbonyl iron, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, it is characterized by high saturation magnetization, low cost, good processing performance, and being capable of satisfying the optimal magnetic conduction and magnetic leakage prevention performance, the magnetic conductive sheet 2 is positioned on the upper side of the magnet 3, an annular magnetic gap 5 is formed among the magnetic conductive sheet 2, the magnet 3 and the magnetic conduction supplement piece 4, the magnetic gap 5 is used for placing a voice coil which is not shown in the figure, the upper end of the voice coil is connected with a diaphragm which is not shown in the figure, after the voice coil is connected with audio current, the voice coil generates an alternating magnetic field under the action of current, and the magnet 3 also generates a constant magnetic field with invariable magnitude and direction. Because the size and direction of the magnetic field generated by the voice coil are changed continuously along with the change of the audio current, the interaction of the two magnetic fields enables the voice coil to move in a direction vertical to the current direction in the voice coil, the voice coil is connected with the diaphragm, so that the diaphragm is driven to vibrate, and the vibration of the air caused by the vibration of the diaphragm generates sound;
the lower side of the magnet 3 is provided with the bulge 6 which is arched upwards, the magnet 3 is fixed on the upper side of the bulge 6, and the position of the bulge 6 has a certain elastic buffering effect, so that the traditional washer can be replaced, and the cost is reduced; in addition, in order to reduce the consumption of rare earth permanent magnet materials and on the basis of not influencing the performance such as the tone quality of a loudspeaker, the lower end of the bulge 6 is provided with a hollow groove 61, and the part of the bulge 6 can be made of low-carbon steel materials and has a certain magnetic conduction effect.
In order to further reduce the amount of rare-earth permanent magnet material, the magnet 3 of the present embodiment is designed to have a ring-shaped structure, and the hollow portion is a material-omitted portion, so that the amount of rare-earth permanent magnet material required can be reduced from 1/4 to 1/3 compared to a conventional solid magnet.
Preferably, the protrusion 6 is attached to the bottom of the cavity of the housing 1.
Preferably, the open end of the magnetic conduction supplement piece 4 is sleeved with the protrusion 6 and the outer part of the outer cover 1, and the magnetic conduction supplement piece 4 is fixedly connected with the outer cover 1 in a riveting mode.
The width of the magnetic gap 5 is set to be 0.9mm, and a magnetic field simulation test is performed on the position of the magnetic gap 5 of the horn in the embodiment 2, and the test result is shown in fig. 6, where Bl values of the magnetic gap 5 are all within a range of 0.95 ± 0.5T, which indicates that the present embodiment can still ensure that the Bl value of the magnetic gap 5 is within a higher range under the condition of reducing the use of rare-earth permanent magnet materials, so as to ensure that the tone quality of the horn is not affected.
Example 3
Please refer to fig. 7-8:
a low-cost horn structure comprises an outer cover 1, a magnetic conductive sheet 2, a magnet 3 and a magnetic conductive supplement piece 4, wherein the magnetic conductive sheet 2 and the magnet 3 are positioned at the inner side of the outer cover 1, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, the carbon content is lower than 0.04 percent, the material components comprise electromagnetic pure iron, electrolytic iron and carbonyl iron, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, it is characterized by high saturation magnetization, low cost, good processing performance, and being capable of satisfying the optimal magnetic conduction and magnetic leakage prevention performance, the magnetic conductive sheet 2 is positioned on the upper side of the magnet 3, an annular magnetic gap 5 is formed among the magnetic conductive sheet 2, the magnet 3 and the magnetic conduction supplement piece 4, the magnetic gap 5 is used for placing a voice coil which is not shown in the figure, the upper end of the voice coil is connected with a diaphragm which is not shown in the figure, after the voice coil is connected with audio current, the voice coil generates an alternating magnetic field under the action of current, and the magnet 3 also generates a constant magnetic field with invariable magnitude and direction. Because the size and direction of the magnetic field generated by the voice coil are changed continuously along with the change of the audio current, the interaction of the two magnetic fields enables the voice coil to move in a direction vertical to the current direction in the voice coil, the voice coil is connected with the diaphragm, so that the diaphragm is driven to vibrate, and the vibration of the air caused by the vibration of the diaphragm generates sound;
the lower side of the magnet 3 is provided with the bulge 6 which is arched upwards, the magnet 3 is fixed on the upper side of the bulge 6, and the position of the bulge 6 has a certain elastic buffering effect, so that the traditional washer can be replaced, and the cost is reduced; in addition, in order to reduce the consumption of rare earth permanent magnet materials and on the basis of not influencing the performance such as the tone quality of a loudspeaker, the lower end of the bulge 6 is provided with a hollow groove 61, and the part of the bulge 6 can be made of low-carbon steel materials and has a certain magnetic conduction effect.
In order to further reduce the amount of rare-earth permanent magnet material, the magnet 3 of the present embodiment is designed to have a ring-shaped structure, and the hollow portion is a material-omitted portion, so that the amount of rare-earth permanent magnet material required can be reduced from 1/4 to 1/3 compared to a conventional solid magnet.
Preferably, the protrusion 6 is connected to the bottom of the magnetically conductive supplement 4.
Preferably, the magnetic conduction supplement piece 4 is embedded into the fixing position of the outer cover 1, and the magnetic conduction supplement piece 4 is fixedly connected with the outer cover 1 in a riveting mode.
The width of the magnetic gap 5 is set to be 0.9mm, magnetic field simulation test is performed on the position of the magnetic gap 5 of the horn in embodiment 3, and the test result is shown in fig. 9, where Bl values of the magnetic gap 5 are all within a range of 0.95 ± 0.5T, which indicates that the present embodiment can still ensure that the Bl value of the magnetic gap 5 is within a higher range under the condition of reducing the use of rare-earth permanent magnet materials, thereby ensuring that the tone quality of the horn is not affected.
Example 4
Please refer to fig. 10-11:
a low-cost horn structure comprises an outer cover 1, a magnetic conductive sheet 2, a magnet 3 and a magnetic conductive supplement piece 4, wherein the magnetic conductive sheet 2 and the magnet 3 are positioned at the inner side of the outer cover 1, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, the carbon content is lower than 0.04 percent, the material components comprise electromagnetic pure iron, electrolytic iron and carbonyl iron, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, it is characterized by high saturation magnetization, low cost, good processing performance, and being capable of satisfying the optimal magnetic conduction and magnetic leakage prevention performance, the magnetic conductive sheet 2 is positioned on the upper side of the magnet 3, an annular magnetic gap 5 is formed among the magnetic conductive sheet 2, the magnet 3 and the magnetic conduction supplement piece 4, the magnetic gap 5 is used for placing a voice coil which is not shown in the figure, the upper end of the voice coil is connected with a diaphragm which is not shown in the figure, after the voice coil is connected with audio current, the voice coil generates an alternating magnetic field under the action of current, and the magnet 3 also generates a constant magnetic field with invariable magnitude and direction. Because the size and direction of the magnetic field generated by the voice coil are changed continuously along with the change of the audio current, the interaction of the two magnetic fields enables the voice coil to move in a direction vertical to the current direction in the voice coil, the voice coil is connected with the diaphragm, so that the diaphragm is driven to vibrate, and the vibration of the air caused by the vibration of the diaphragm generates sound;
the lower side of the magnet 3 is provided with the bulge 6 which is arched upwards, the magnet 3 is fixed on the upper side of the bulge 6, and the position of the bulge 6 has a certain elastic buffering effect, so that the traditional washer can be replaced, and the cost is reduced; in addition, in order to reduce the consumption of rare earth permanent magnet materials and on the basis of not influencing the performance such as the tone quality of a loudspeaker, the lower end of the bulge 6 is provided with a hollow groove 61, and the part of the bulge 6 can be made of low-carbon steel materials and has a certain magnetic conduction effect.
In order to further reduce the amount of rare-earth permanent magnet material, the magnet 3 of the present embodiment is designed to have a ring-shaped structure, and the hollow portion is a material-omitted portion, so that the amount of rare-earth permanent magnet material required can be reduced from 1/4 to 1/3 compared to a conventional solid magnet.
Preferably, the protrusion 6 is attached to the bottom of the cavity of the housing 1.
Preferably, the magnetic conduction supplement piece 4 is embedded into the fixing position of the outer cover 1, the magnetic conduction supplement piece 4 is of an annular structure, and the magnetic conduction supplement piece 4 is fixedly connected with the outer cover 1 in a riveting mode.
The width of the magnetic gap 5 is set to be 0.9mm, and a magnetic field simulation test is performed on the position of the magnetic gap 5 of the horn in the embodiment 4, and the test result is shown in fig. 12, where Bl values of the magnetic gap 5 are all within a range of 0.95 ± 0.5T, which indicates that the present embodiment can still ensure that the Bl value of the magnetic gap 5 is within a higher range under the condition of reducing the use of rare-earth permanent magnet materials, so as to ensure that the tone quality of the horn is not affected.
Example 5
Please refer to fig. 13:
a low-cost horn structure comprises an outer cover 1, a magnetic conductive sheet 2, a magnet 3 and a magnetic conductive supplement piece 4, wherein the magnetic conductive sheet 2 and the magnet 3 are positioned at the inner side of the outer cover 1, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, the carbon content is lower than 0.04 percent, the material components comprise electromagnetic pure iron, electrolytic iron and carbonyl iron, the magnetic conductive sheet 2 is made of low-carbon steel or pure iron material, it is characterized by high saturation magnetization, low cost, good processing performance, and being capable of satisfying the optimal magnetic conduction and magnetic leakage prevention performance, the magnetic conductive sheet 2 is positioned on the upper side of the magnet 3, an annular magnetic gap 5 is formed among the magnetic conductive sheet 2, the magnet 3 and the magnetic conduction supplement piece 4, the magnetic gap 5 is used for placing a voice coil which is not shown in the figure, the upper end of the voice coil is connected with a diaphragm which is not shown in the figure, after the voice coil is connected with audio current, the voice coil generates an alternating magnetic field under the action of current, and the magnet 3 also generates a constant magnetic field with invariable magnitude and direction. The size and direction of the magnetic field generated by the voice coil are changed continuously along with the change of the audio current, so that the voice coil moves in a direction vertical to the current direction in the voice coil due to the interaction of the two magnetic fields, the voice coil is connected with the diaphragm, the diaphragm is driven to vibrate, and the vibration of air is caused by the vibration of the diaphragm to make sound.
Preferably, the magnetic conductive supplement 4 is formed by integrally molding the outer cover 1 and the magnetic conductive supplement 4 by pressurizing and thickening the mold.
Preferably, the magnets 3 used are of conventional solid magnet construction.
The width of the magnetic gap 5 is set to be 0.9mm, and a magnetic field simulation test is performed on the position of the magnetic gap 5 of the horn in example 5, and the test result is shown in fig. 14, where Bl values of the magnetic gap 5 are all within a range of 0.95 ± 0.5T, which indicates that the present embodiment can still ensure that the Bl value of the magnetic gap 5 is within a higher range under the condition of reducing the use of rare-earth permanent magnet materials, so as to ensure that the tone quality of the horn is not affected.
The above examples only express 5 embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a low-cost horn structure, includes dustcoat (1), magnetic conductive sheet (2), magnet (3), magnetic conduction replenisher (4), its characterized in that, magnetic conductive sheet (2), magnet (3) are located dustcoat (1) is inboard, magnetic conductive sheet (2) are located magnet (3) upside, magnetic conductive sheet (2), magnet (3) and form an annular magnetic gap (5) between magnetic conduction replenisher (4), magnet (3) downside is equipped with arch (6) that upwards arch, magnet (3) are fixed arch (6) upside, arch (6) lower extreme is formed with fretwork groove (61).
2. A low cost horn structure according to claim 1 wherein said magnets (3) are of annular configuration.
3. A low cost horn structure according to claim 1 wherein said protrusion (6) is attached to the bottom of the inner cavity of said housing (1).
4. A low cost horn structure according to claim 3, wherein the magnetically conductive supplement (4) is formed by integrally molding the cover (1) and the magnetically conductive supplement (4) by means of mold pressing and thickening.
5. A low-cost horn structure according to claim 3, wherein the open end of the magnetic conduction supplement piece (4) is sleeved on the protrusion (6) and the outside of the outer cover (1), and the magnetic conduction supplement piece (4) is fixedly connected with the outer cover (1) by riveting.
6. A low-cost horn structure according to claim 3, wherein the magnetic conductive supplement piece (4) is embedded in the fixing position of the outer cover (1), the magnetic conductive supplement piece (4) is in a ring structure, and the magnetic conductive supplement piece (4) is fixedly connected with the outer cover (1) in a riveting manner.
7. A low cost horn structure according to claim 1 wherein said protrusion (6) is attached to the bottom of said magnetically conductive complement (4).
8. A low-cost horn structure according to claim 7, characterized in that the magnetic conductive supplement piece (4) is embedded in the fixing position of the outer cover (1), and the magnetic conductive supplement piece (4) is fixedly connected with the outer cover (1) in a riveting manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123327350.3U CN216673288U (en) | 2021-12-27 | 2021-12-27 | Low-cost loudspeaker structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123327350.3U CN216673288U (en) | 2021-12-27 | 2021-12-27 | Low-cost loudspeaker structure |
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| Publication Number | Publication Date |
|---|---|
| CN216673288U true CN216673288U (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123327350.3U Active CN216673288U (en) | 2021-12-27 | 2021-12-27 | Low-cost loudspeaker structure |
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| CN (1) | CN216673288U (en) |
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2021
- 2021-12-27 CN CN202123327350.3U patent/CN216673288U/en active Active
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