CN220191015U - Megaphone with resonant cavity - Google Patents
Megaphone with resonant cavity Download PDFInfo
- Publication number
- CN220191015U CN220191015U CN202321448606.2U CN202321448606U CN220191015U CN 220191015 U CN220191015 U CN 220191015U CN 202321448606 U CN202321448606 U CN 202321448606U CN 220191015 U CN220191015 U CN 220191015U
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- China
- Prior art keywords
- shell
- megaphone
- resonant cavity
- protective cover
- resonant
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- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 13
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of megaphone, in particular to a megaphone with a resonant cavity, which comprises a shell with an opening at the upper part, wherein a connecting plate is arranged at one end of the shell, a woofer is arranged on the lower surface of the shell, a bass reinforcing module is arranged above the shell, the bass reinforcing module comprises a protective cover arranged at the opening position of the shell, the lower end of the protective cover is communicated with the shell to form a resonant cavity, a resonant diaphragm is arranged on the upper end surface of the protective cover, the resonant cavity is formed by splicing the shell and the protective cover, the woofer is arranged below the resonant cavity to make bass sounds, and the resonant diaphragm is arranged above the resonant cavity to promote the bass effects when the megaphone is amplified after being connected with a main body containing topics.
Description
Technical Field
The utility model relates to the technical field of megaphone, in particular to a megaphone with a resonant cavity for enhancing bass effect.
Background
The megaphone is divided into a mobile handheld type and a fixed installation type according to the type of a product, the megaphone belongs to common public address equipment, the public address function of the two megaphones is realized through a tweeter, the structure is simple, the manufacturing cost is low, for example, the utility model patent with the application number of 202222764276X discloses a police megaphone, which comprises an installation box, an installation cavity is formed in the installation box, installation plates are symmetrically arranged on two sides of the installation box, an installation hole is formed in the installation plate, a turntable is rotatably arranged in the middle of the top end of the installation box, a megaphone body is movably arranged at the top end of the turntable, and a protection component is arranged on one side of the top end of the installation box; can realize the downshifting of protection casing and adjust, when meeting heavy rainfall bad weather suddenly, can realize the shielding protection to the megaphone body through downshifting the protection casing.
The main spare part of this megaphone also carries out the public address through single tweeter, but this kind of public address mode does not possess the bass effect, when using under the great environment of noise, receives the interference of external noise easily, and then leads to the megaphone public address function to receive the influence, leads to the public address regional reduction, can not play good public address effect.
Disclosure of Invention
The utility model aims to overcome the defect that the bass function of a megaphone is poor to cause the damage of a sound amplifying effect in the prior art, and provides the megaphone with the effect of enhancing the bass effect by adding a resonant cavity.
The utility model is realized by the following technical scheme: the megaphone with the resonant cavity comprises a shell with an opening at the upper part, wherein a connecting plate is arranged at one end of the shell, a woofer is arranged on the lower surface of the shell, and a bass reinforcing module is arranged above the shell;
the bass strengthening module comprises a protective cover arranged at the opening position of the shell, the lower end of the protective cover is communicated with the shell to form a resonant cavity, and the upper end face of the protective cover is provided with a resonant diaphragm.
Further, the width of the protective cover gradually decreases from bottom to top, and the inner side wall is arc-shaped.
Further, the upper end face of the protective cover is provided with a bearing boss for mounting the resonance membrane, and a positioning ring plate for fixing the resonance membrane is arranged above the bearing boss.
Further, a sealing extension plate positioned between the bearing boss and the positioning ring plate is arranged at the edge of the resonance diaphragm.
Further, the lower surface of protection casing is provided with the column of counterpoint, the bottom of casing is provided with the joint platform that uses with the column cooperation of counterpoint.
Further, the casing is detachably connected with the protection casing, the upper end of casing sets up joint and extends the board, the lower terminal surface of protection casing is provided with the draw-in groove that uses with joint and extends the board cooperation.
The utility model has the beneficial effects that: this take megaphone of resonance cavity through add the resonance cavity on the megaphone, and this resonance cavity is constituteed by casing and protection casing concatenation, and the bass loudspeaker of below installation of resonance cavity carries out the bass sound production, promotes the bass effect in the top installation resonance diaphragm of resonance cavity, promotes the bass effect when whole megaphone is public address after being connected with the topic-containing main part.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a top view of the present utility model;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a cross-sectional view taken along line B-B of fig. 2.
Wherein: 1-a housing; 2-connecting plates; 3-woofers; 4-protecting cover; 5-a resonant cavity; 6-a resonant diaphragm; 7-receiving the boss; 8-positioning ring plates; 9, sealing the extension plate; 10-aligning columns; 11-a clamping table; 12-clamping the extension plate; 13-clamping groove.
Detailed Description
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1-4, a megaphone with a resonant cavity 5 comprises a shell 1 with an opening at the upper part, wherein a connecting plate 2 is arranged at one end of the shell 1, the shell 1 is connected with a megaphone main body through the connecting plate 2, a woofer 3 is arranged on the lower surface of the shell 1, and a bass reinforcing module is arranged above the shell 1;
the bass enhancement module comprises a protective cover 4 positioned at the opening position of the shell 1, the lower part of the protective cover 4 is connected with the opening position of the shell 1, the lower end of the protective cover 4 is communicated with the shell 1 to form a resonant cavity 5, and a detachable resonant diaphragm 6 is arranged on the upper end face of the protective cover 4.
The width of the protective cover 4 gradually decreases from bottom to top, the inner side wall is arc-shaped, and the vibration of the resonance membrane 6 is enhanced due to the vibration of the inner side wall and the air, so that the effect of improving the bass effect is achieved.
The up end of protection casing 4 is equipped with the boss 7 of accepting that is used for installing resonance diaphragm 6, accepts boss 7 and the inboard of protection casing 4 upper end that is located into the indent of protection casing 4 integrative injection moulding, and the top of accepting boss 7 is equipped with the holding collar plate 8 that is used for fixed resonance diaphragm 6, and holding collar plate 8 and accept boss 7 and pass through the bolt and fasten, and the sealing washer is laid to the lower surface of holding collar plate 8.
The edge of the resonance diaphragm 6 is provided with a sealing extension plate 9 positioned between the bearing boss 7 and the positioning ring plate 8, the sealing extension plate 9 is adhered to the edge of the resonance diaphragm 6, and after the sealing extension plate 9 is placed on the upper surface of the bearing boss 7, the sealing extension plate is tightly pressed by the positioning ring plate 8 and then is connected and fastened by using bolts.
The lower surface of protection casing 4 is equipped with counterpoint post 10, and the one end and the protection casing 4 fixed connection of counterpoint post 10, and the other end diameter reduces gradually and forms the bayonet joint, and the bottom of casing 1 is provided with the joint platform 11 that uses with the cooperation of counterpoint post 10, and the blind hole that uses with the cooperation of bayonet joint is seted up at the middle part of joint boss, and the butt joint realizes the counterpoint installation function of protection casing 4 and casing 1 with the blind hole.
The casing 1 is detachably connected with the protection casing 4, and the upper end of casing 1 sets up joint and extends board 12, and the lower terminal surface of protection casing 4 is provided with and extends the draw-in groove 13 that board 12 cooperation was used with the joint, joint that board 12 and draw-in groove 13 are extending in the joint of protection casing 4 and casing 1, utilize the sealant to seal after the block to this reinforcing resonance cavity 5 construction period vibrations's effect.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. A megaphone with a resonant cavity, characterized in that: the low-noise loudspeaker comprises a shell with an opening at the upper part, wherein a connecting plate is arranged at one end of the shell, a low-noise loudspeaker is arranged on the lower surface of the shell, and a low-noise reinforcing module is arranged above the shell;
the bass strengthening module comprises a protective cover arranged at the opening position of the shell, the lower end of the protective cover is communicated with the shell to form a resonant cavity, and the upper end face of the protective cover is provided with a resonant diaphragm.
2. The megaphone with resonant cavity of claim 1 wherein: the width of the protective cover gradually decreases from bottom to top, and the inner side wall is arc-shaped.
3. The megaphone with resonant cavity of claim 1 wherein: the upper end face of the protective cover is provided with a bearing boss for mounting the resonance membrane, and a positioning ring plate for fixing the resonance membrane is arranged above the bearing boss.
4. A megaphone with resonant cavity as defined in claim 3, wherein: and a sealing extension plate positioned between the bearing boss and the positioning ring plate is arranged at the edge of the resonance diaphragm.
5. The megaphone with resonant cavity of claim 1 wherein: the lower surface of protection casing is provided with the counterpoint post, the bottom of casing is provided with the joint platform that uses with the cooperation of counterpoint post.
6. The megaphone with resonant cavity of claim 1 wherein: the shell is detachably connected with the protective cover, the upper end of the shell is provided with a clamping extension plate, and the lower end face of the protective cover is provided with a clamping groove matched with the clamping extension plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321448606.2U CN220191015U (en) | 2023-06-07 | 2023-06-07 | Megaphone with resonant cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321448606.2U CN220191015U (en) | 2023-06-07 | 2023-06-07 | Megaphone with resonant cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220191015U true CN220191015U (en) | 2023-12-15 |
Family
ID=89104491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321448606.2U Active CN220191015U (en) | 2023-06-07 | 2023-06-07 | Megaphone with resonant cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220191015U (en) |
-
2023
- 2023-06-07 CN CN202321448606.2U patent/CN220191015U/en active Active
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| GR01 | Patent grant | ||
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