CN206879094U - A kind of megaphone and unmanned plane - Google Patents
A kind of megaphone and unmanned plane Download PDFInfo
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- CN206879094U CN206879094U CN201720822436.8U CN201720822436U CN206879094U CN 206879094 U CN206879094 U CN 206879094U CN 201720822436 U CN201720822436 U CN 201720822436U CN 206879094 U CN206879094 U CN 206879094U
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- megaphone
- magnet
- iron
- main magnet
- washer
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 86
- 230000005291 magnetic effect Effects 0.000 claims abstract description 51
- 229910052742 iron Inorganic materials 0.000 claims abstract description 48
- 239000003292 glue Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Embodiment of the present utility model discloses a kind of megaphone and unmanned plane, is related to megaphone technical field, and while having higher volume, magnetic dispersion is also smaller.The megaphone, including：T iron, main magnet and secondary magnet；Wherein, there is the T iron disk-shaped base portion and the side from the base portion to extend the trunk portion to be formed along perpendicular to the direction of the base portion；The main magnet in a ring, is set in the trunk portion of the T iron, and is supported on the base portion of the T iron；The secondary magnet is located at the opposite side of the base portion of the T iron, and the N poles of the secondary magnet and the N of the main magnet are extremely relative, or, the S poles of the secondary magnet and the S of the main magnet are extremely relative.The megaphone is installed on the unmanned plane.The utility model is suitably mounted to the device of electromagnetic susceptibility such as on unmanned plane.
Description
Technical Field
The utility model relates to a megaphone technical field especially relates to a megaphone and unmanned aerial vehicle.
Background
The current megaphone is basically manufactured by adopting a male die, and in order to ensure high volume, the megaphone is basically in an external magnetic type.
Although the external magnetic megaphone can ensure higher volume, due to the external magnetic structure, when the megaphone is applied to an electromagnetic sensitive device such as an unmanned aerial vehicle provided with an electronic compass, the external magnetic magnet interferes with the normal work of the electromagnetic sensitive device such as the electronic compass on the unmanned aerial vehicle.
Disclosure of Invention
In view of this, the embodiment of the utility model provides a megaphone and unmanned aerial vehicle when having higher volume, the magnetism leaks also lessly.
In a first aspect, an embodiment of the present invention provides a megaphone, include: t iron, main magnet and auxiliary magnet; wherein the T iron is provided with a base part in a disc shape and a column part formed by extending from one side of the base part along a direction vertical to the base part; the main magnet is annular, is sleeved on the column body part of the T iron and is supported at the base part of the T iron; the auxiliary magnet is arranged on the other side of the base of the T iron, and the N pole of the auxiliary magnet is opposite to the N pole of the main magnet, or the S pole of the auxiliary magnet is opposite to the S pole of the main magnet.
With reference to the first aspect, in a first implementation manner of the first aspect, the secondary magnet is smaller in volume than the main magnet.
With reference to the first aspect, in a second embodiment of the first aspect, the megaphone further comprises a magnetic shield, wherein the magnetic shield is a cylindrical structure with a closed bottom and an open top end; the T iron, the main magnet and the auxiliary magnet are arranged in the antimagnetic cover, wherein the auxiliary magnet is positioned at the bottom of the antimagnetic cover.
With reference to the second implementation manner of the first aspect, in a third implementation manner of the first aspect, the magnetic pole further includes a washer, the washer is annular, is sleeved on the column body of the T-shaped iron, and is arranged adjacent to the main magnet; a gap is formed between the washer and the T iron column part; the diamagnetic shield comprises a first inner wall and a second inner wall, the diameter of the first inner wall is larger than that of the second inner wall, and a first table top is arranged between the first inner wall and the second inner wall; the washer comprises a first outer edge and a second outer edge, the diameter of the first outer edge is larger than that of the second outer edge, and a second table top is arranged between the first outer edge and the second outer edge; the first table top is matched with the second table top.
With reference to the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, a predetermined gap is formed between the second inner wall of the antimagnetic cover and the second outer edge of the washer.
With reference to the fourth embodiment of the first aspect, in a fifth embodiment of the first aspect, the gap has a width of 0.2 to 2 mm.
With reference to the third embodiment of the first aspect, in a sixth embodiment of the first aspect, respective axes of the T-iron, the main magnet, the secondary magnet, the washer, and the antimagnetic shield coincide; wherein, the washer is fixedly connected with a support frame of the megaphone.
With reference to the third embodiment of the first aspect, in a seventh embodiment of the first aspect, the T-iron and the main magnet, the secondary magnet and the T-iron, and/or the main magnet and the washer are bonded together by glue.
With reference to the third embodiment of the first aspect, in an eighth embodiment of the first aspect, the antimagnetic cap is bonded to at least the main magnet or the washer through a glue.
In a second aspect, an embodiment of the present invention provides an unmanned aerial vehicle having a megaphone installed thereon, the megaphone is the megaphone of any one of the foregoing embodiments.
The embodiment of the utility model provides a megaphone and unmanned aerial vehicle adopts main and auxiliary magnetic structure, and the magnetic flux in the T iron can be increased to the auxiliary magnet, is convenient for improve the volume of megaphone; in addition, the N pole of the auxiliary magnet is opposite to the N pole of the main magnet, or the S pole of the auxiliary magnet is opposite to the S pole of the main magnet, so that the direction of the magnetic force line of the auxiliary magnet is opposite to the direction of the magnetic force line of the main magnet, the backward magnetic induction intensity of the main magnet can be partially offset, the magnetic force line leaked into the air by the main magnet can be reduced to a certain extent, and the magnetic shielding effect is achieved on the main magnet to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a megaphone according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the T-iron of FIG. 1;
FIG. 3 is a side view of the T iron of FIG. 2;
FIG. 4 is a schematic perspective view of the antimagnetic shield of FIG. 1;
FIG. 5 is a schematic cross-sectional view of the antimagnetic shield of FIG. 4;
FIG. 6 is a front view of the washer of FIG. 1;
3 fig. 3 7 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 a 3- 3 a 3 in 3 fig. 3 6 3. 3
Detailed Description
The relative magnetism to current interior magnetic type megaphone leaks the condition that little but the volume is also low, the embodiment of the utility model provides an adopt main and auxiliary magnet to the outer magnetic structure of subsides, when having higher volume, magnetism leaks also lessly.
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the megaphone of the present embodiment includes: t iron 1, main magnet 2 and auxiliary magnet 3; wherein the T iron 1 is provided with a base 11 in a disc shape and a column part 12 formed by extending from one side of the base 11 along a direction vertical to the base; the main magnet 2 is annular, is sleeved on the column part 12 of the T iron 1 and is supported on the base part 11 of the T iron 1; the auxiliary magnet 3 is arranged on the other side of the base 11 of the T iron 1, and the N pole of the auxiliary magnet 3 is opposite to the N pole of the main magnet 2.
In this embodiment, the megaphone may also be referred to as a horn or a speaker. The T-iron guides the magnetic field of the main magnet to the voice coil (not shown), and the T-iron may be solid to enhance the magnetic flux in the voice coil.
In this embodiment, the N-pole of the main magnet is opposed to the N-pole of the sub magnet. The auxiliary magnet can increase the magnetic flux in the T iron, namely the T iron can guide the N-pole magnetic line of the auxiliary magnet to the column part 12 of the T iron through the magnetic conduction function of the T iron so as to enhance the magnetic force of the column part 12 and facilitate the increase of the volume of the megaphone; in addition, the N pole of the auxiliary magnet is opposite to the N pole of the main magnet, so that the direction of the magnetic force line of the auxiliary magnet is opposite to the direction of the magnetic force line of the main magnet, the backward magnetic induction intensity of the main magnet can be partially offset, the magnetic force line leaked into the air by the main magnet can be reduced to a certain extent, and the magnetic shielding effect is achieved on the main magnet to a certain extent. The backward magnetic induction of the main magnet refers to the magnetic induction of the main magnet towards the direction of the auxiliary magnet.
According to the utility model discloses an embodiment, the utility model discloses megaphone's volume can reach more than 120 decibels, and the magnetism leaks simultaneously and can be less than 0.03 Guass.
According to another embodiment of the present invention, the main magnet and the auxiliary magnet may have a structure in which the S-pole of the auxiliary magnet 3 is opposite to the S-pole of the main magnet 2.
In order to ensure that the auxiliary magnet can better play a role of magnetic shielding on the main magnet to a certain extent, the volume of the auxiliary magnet can be consistent with that of the main magnet. However, since the auxiliary magnet itself has magnetism, if the auxiliary magnet is made larger, the magnetic induction intensity of the auxiliary magnet itself will also be larger, and magnetic interference will also be generated to the external.
According to an embodiment of the present invention, in order to reduce the magnetic leakage of the secondary magnet itself as much as possible, the secondary magnet 3 is smaller in size than the primary magnet 2.
According to an embodiment of the present invention, in order to reduce the leakage of magnetic lines of force in the air, the megaphone further includes a magnetic shield 4, wherein the magnetic shield 4 is a cylindrical structure with a closed bottom and an open top; the T iron 1, the main magnet 2 and the auxiliary magnet 3 are arranged in the antimagnetic cover 4, wherein the auxiliary magnet 3 is positioned at the bottom of the antimagnetic cover. The antimagnetic shield 4 can concentrate the magnetic force lines of the main magnet 2 at the voice coil line, so as to improve the volume, and can reduce the magnetic force lines leaked from the main magnet 2 and the auxiliary magnet 3 to the air, thereby playing a role of magnetic shielding.
In order to avoid as much as possible a too high magnetic flux in the shield to reduce the magnetic flux entering the voice coil wire, the shield side walls can be designed relatively thin. The thickness design of the side wall of the antimagnetic shield can balance the contradiction between magnetic leakage and sound volume.
According to the utility model discloses an embodiment, refer to fig. 1, fig. 4 to fig. 7, the megaphone still includes china 5, china 5 is the annular, and the cover is established cylinder portion 12 of T iron 1, and with the adjacent setting of main magnet 2 china 5 with have the clearance between cylinder portion 12 of T iron 1. The voice coil is arranged at the gap, a voice coil wire is wound on the voice coil, the voice coil is connected with drum paper, the drum paper is arranged on a support frame, and the support frame can be called a basin frame.
In the embodiment in which the N-pole of the main magnet is opposite to the N-pole of the sub magnet, a magnetic circuit is formed among the T-iron 1, the main magnet 2, and the washer 5, in which the T-iron 1 forms the N-pole (+ pole) of the magnetic circuit and the washer 5 forms the S-pole (-pole) of the magnetic circuit. After the voice coil wire is electrified, the voice coil can vibrate based on the electromagnetic induction principle, and therefore drum paper connected with the voice coil is driven to vibrate and sound.
The antimagnetic cover 4 comprises a first inner wall 41 and a second inner wall 42, the diameter of the first inner wall 41 is larger than that of the second inner wall 42, and a first table surface 43 is arranged between the first inner wall 41 and the second inner wall 42; the washer 5 comprises a first outer edge 51 and a second outer edge 52, the diameter of the first outer edge 51 is larger than that of the second outer edge 52, and a second table surface 53 is arranged between the first outer edge 51 and the second outer edge 52; the first mesa 43 mates with the second mesa 53. The washer can lead the magnetic field of the main magnet to the voice coil wire on one hand, and can be matched with the antimagnetic cover on the other hand, so that the edge is sealed, and the effect of magnetic shielding is achieved.
Referring to fig. 1, according to an embodiment of the present invention, a predetermined gap g is formed between the second inner wall 42 of the antimagnetic cover and the second outer edge 52 of the washer. The gap g can play a role of increasing the magnetic resistance, so that the magnetic field of the main magnet is conveniently concentrated to the voice coil wire, and the volume of the megaphone is increased.
The width of the gap may be 0.2-2mm, preferably 0.5 mm.
The main magnet 2, the auxiliary magnet 3 and the washer 5 are all annular; the antimagnetic cover 4 is in a cylinder shape with a closed bottom and an open top; the T iron 1, the main magnet 2, the auxiliary magnet 3, the washer 5 and the antimagnetic shield 4 are all revolving bodies, and the respective axes of the revolving bodies coincide. Specifically, the main magnet 2, the auxiliary magnet 3 and the washer 5 are concentrically arranged together; wherein, the washer 5 and the support frame 6 of the megaphone can be fixedly connected through a screw 7.
The T iron 1, the main magnet 2, the auxiliary magnet 3, the washer 5 and the antimagnetic cover 4 can be bonded together by colloid. Specifically, the T iron and the main magnet, the auxiliary magnet and the T iron, and/or the main magnet and the washer can be bonded together through glue. The antimagnetic cover is at least bonded with the main magnet or the washer through colloid.
The main magnet and the secondary magnet can be made of ferrite Y25. The auxiliary magnet 3 may have a disk-like structure.
The embodiment of the utility model provides an unmanned aerial vehicle is still provided unmanned aerial vehicle is last to install the megaphone, the megaphone is aforementioned any embodiment the megaphone. Because the megaphone has above-mentioned structure, can reduce the magnetism and reveal the interference to the electron compass on the unmanned aerial vehicle.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A megaphone is characterized by comprising a T iron, a main magnet and an auxiliary magnet; wherein,
the T iron is provided with a base part in a disc shape and a column part formed by extending from one side of the base part along a direction perpendicular to the base part;
the main magnet is annular, is sleeved on the column body part of the T iron and is supported at the base part of the T iron;
the auxiliary magnet is arranged on the other side of the base of the T iron, and the N pole of the auxiliary magnet is opposite to the N pole of the main magnet, or the S pole of the auxiliary magnet is opposite to the S pole of the main magnet.
2. The megaphone of claim 1, wherein the secondary magnet is smaller in volume than the primary magnet.
3. The megaphone of claim 1, further comprising a magnetic shield, the shield being a cylindrical structure with a closed bottom and an open top;
the T iron, the main magnet and the auxiliary magnet are arranged in the antimagnetic cover, wherein the auxiliary magnet is positioned at the bottom of the antimagnetic cover.
4. The megaphone of claim 3, further comprising a washer, wherein the washer is annular, is sleeved on the column part of the T-bar, and is arranged adjacent to the main magnet; a gap is formed between the washer and the T iron column part; wherein,
the antimagnetic shield comprises a first inner wall and a second inner wall, the diameter of the first inner wall is larger than that of the second inner wall, and a first table top is arranged between the first inner wall and the second inner wall;
the washer comprises a first outer edge and a second outer edge, the diameter of the first outer edge is larger than that of the second outer edge, and a second table top is arranged between the first outer edge and the second outer edge;
the first table top is matched with the second table top.
5. The megaphone of claim 4, wherein the second inner wall of the shield has a predetermined gap with the second outer edge of the washer.
6. A megaphone as claimed in claim 5, wherein the width of the gap is 0.2-2 mm.
7. The megaphone of claim 4, wherein the axes of the T-bar, the main bar, the secondary bar, the washer and the antimagnetic shield coincide; wherein,
the washer is fixedly connected with a support frame of the megaphone.
8. The megaphone of claim 4, wherein the main magnet and the T-iron, the auxiliary magnet and the T-iron, and/or the main magnet and the washer are bonded together by glue.
9. The megaphone of claim 4, wherein the antimagnetic shield is bonded to at least the main magnet or the washer by a glue.
10. A drone having a megaphone mounted thereon, wherein the megaphone is as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720822436.8U CN206879094U (en) | 2017-07-07 | 2017-07-07 | A kind of megaphone and unmanned plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720822436.8U CN206879094U (en) | 2017-07-07 | 2017-07-07 | A kind of megaphone and unmanned plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206879094U true CN206879094U (en) | 2018-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720822436.8U Active CN206879094U (en) | 2017-07-07 | 2017-07-07 | A kind of megaphone and unmanned plane |
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| Country | Link |
|---|---|
| CN (1) | CN206879094U (en) |
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2017
- 2017-07-07 CN CN201720822436.8U patent/CN206879094U/en active Active
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