CN204014052U - A kind of loud speaker - Google Patents
A kind of loud speaker Download PDFInfo
- Publication number
- CN204014052U CN204014052U CN201420475729.XU CN201420475729U CN204014052U CN 204014052 U CN204014052 U CN 204014052U CN 201420475729 U CN201420475729 U CN 201420475729U CN 204014052 U CN204014052 U CN 204014052U
- Authority
- CN
- China
- Prior art keywords
- fore shell
- loudspeaker
- loud speaker
- shaped
- slit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model discloses a kind of loud speaker, it includes cup-shaped fore shell, is covered on the back shroud of fore shell and is located at the loudspeaker between the two, the bottom of fore shell offers front sound hole, on back shroud, offer rear sound hole, fore shell inner side is formed with a plurality of L shaped projections, the first protuberance of L shaped projection is positioned at the sidewall of fore shell, the second protuberance of L shaped projection is positioned at the bottom of fore shell, loudspeaker are carried on a plurality of L shaped projections, between adjacent two L shaped projections, be formed with slit, slit is communicated with the forward and backward side of loudspeaker.This loud speaker utilize acoustic short circuit eliminate loudspeaker front side unnecessary in, low-frequency sound wave, thereby obtain more clear, thorough sound, and obtain the design effect of low distortion.This loud speaker is without the parts such as diaphragm, magnetic circuit, voice coil loudspeaker voice coil that change loudspeaker, thereby is easier to realize, and meanwhile, the simplicity of design of L shaped projection, makes loud speaker have lower product cost and design cost.
Description
Technical field
The utility model relates to loud speaker, relates in particular to a kind of loud speaker of being convenient to regulate high, medium and low frequency frequency response curve.
Background technology
Loud speaker is a kind of energy transducer that the signal of telecommunication is changed into acoustical signal, and the performance quality of loud speaker is very large on the impact of tonequality, with the product of high-performance loud speaker manufacture, means have lower distortion and better tonequality.In prior art, conventionally regulate as follows the frequency response curve of loud speaker and obtain the design effect of low distortion simultaneously: overlay before increasing, on horn bracket, offer through hole, adjust diaphragm, adjust magnetic circuit, adjust voice coil loudspeaker voice coil, or increase the damping materials such as adjustable sound paper, screen cloth, adhesive-bonded fabric.Above-mentioned regulative mode exists following not enough: first, the degree of amplitude modulation of each parts is large not, can not produce appreciable results at high, medium and low frequency simultaneously; Secondly, need a plurality of parts actings in conjunction, increased the difficult design of low distortion; Again, the design difficulty of diaphragm, magnetic circuit, voice coil loudspeaker voice coil is large.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of frequency response curve that can conveniently regulate high, medium and low frequency, obtains more clear, thorough sound, the loud speaker that keeps low distortion design object simultaneously and be easy to realize.
For solving the problems of the technologies described above, the utility model adopts following technical scheme.
A kind of loud speaker, it includes cup-shaped fore shell, is covered on the back shroud of fore shell and is located at the loudspeaker between the two, the bottom of described fore shell offers front sound hole, on described back shroud, offer rear sound hole, described fore shell inner side is formed with a plurality of L shaped projections, the first protuberance of described L shaped projection is positioned at the sidewall of fore shell, the second protuberance of described L shaped projection is positioned at the bottom of fore shell, described loudspeaker are carried on a plurality of L shaped projections, between adjacent two L shaped projections, be formed with slit, described slit is communicated with the forward and backward side of loudspeaker.
Preferably, the bottom of described fore shell is embedded with iron plate.
Preferably, the bottom of described fore shell is pasted with the first screen cloth, and described the first screen cloth is covered in front sound hole.
Preferably, described back shroud is pasted with the second screen cloth, and described the second screen cloth is covered in rear sound hole.
Preferably, the outside of described fore shell and be provided with cushion rubber in the bottom of fore shell.
In the disclosed loud speaker of the utility model, loudspeaker are located in fore shell, and loudspeaker are carried on a plurality of L shaped projections.Owing to being formed with slit between two adjacent L shaped projections, and slit is communicated with the front and back side of loudspeaker, so, a sound wave part for loudspeaker rear side is spread out of by rear sound hole, another part transfers to the front side of loudspeaker via slit, and then produces acoustic short circuit phenomenon with the acoustic wave segment of loudspeaker front side, utilize acoustic short circuit eliminate loudspeaker front side unnecessary in, low-frequency sound wave, thereby obtain more clear, thorough sound, and obtain the design effect of low distortion.This loud speaker has reduced the design difficulty of the parts such as the diaphragm, magnetic circuit, voice coil loudspeaker voice coil of loudspeaker, thereby is easier to realize, and meanwhile, the simplicity of design of L shaped projection, makes loud speaker have lower product cost and design cost.
Accompanying drawing explanation
Fig. 1 is the side sectional view of loud speaker.
Fig. 2 is the partial enlarged drawing of A part in Fig. 1.
Fig. 3 is the side sectional view of loudspeaker.
Fig. 4 is the stereogram of fore shell.
Fig. 5 is the front view of back shroud.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in more detail.
The utility model discloses a kind of loud speaker, in conjunction with shown in Fig. 1 to Fig. 5, it includes cup-shaped fore shell 1, be covered on the back shroud 2 of fore shell 1 and be located at the loudspeaker 3 between the two, the bottom of described fore shell 1 offers front sound hole 11, on described back shroud 2, offer rear sound hole 20, described fore shell 1 inner side is formed with a plurality of L shaped projections 10, the first protuberance 100 of described L shaped projection 10 is positioned at the sidewall of fore shell 1, the second protuberance 101 of described L shaped projection 10 is positioned at the bottom of fore shell 1, described loudspeaker 3 are carried on a plurality of L shaped projections 10, between adjacent two L shaped projections 10, be formed with slit 12, described slit 12 is by before loudspeaker 3, rear side is communicated with.
In above-mentioned loud speaker, loudspeaker 3 are located in fore shell 1, and loudspeaker 3 are carried on a plurality of L shaped projections 10, owing to being formed with slit 12 between two adjacent L shaped projections 10, and slit 12 is communicated with the front and back side of loudspeaker 3, so, a sound wave part for loudspeaker 3 rear sides is spread out of by rear sound hole 20, another part transfers to the front side of loudspeaker 3 via slit 12, and then produce acoustic short circuit phenomenon with the acoustic wave segment of loudspeaker 3 front sides, utilize acoustic short circuit eliminate loudspeaker 3 front sides unnecessary in, low-frequency sound wave, thereby it is more clear to obtain, thorough sound, and obtain the design effect of low distortion.This loud speaker has reduced the design difficulty of the parts such as the diaphragm, magnetic circuit, voice coil loudspeaker voice coil of loudspeaker, thereby is easier to realize, and meanwhile, the simplicity of design of L shaped projection 10, makes loud speaker have lower product cost and design cost.
Principle about acoustic short circuit phenomenon is as follows:
The vibrating diaphragm of loudspeaker, when seesawing, except there being the sound wave of forwards radiation, also has the sound wave of rearward radiation, and the acoustic radiation phase place of both direction is just in time contrary, differs 180 degree.Because the wavelength of low-frequency sound wave is very long, its diffracting power is very strong, if loudspeaker are not isolated front and back side, the sound wave of backward radiation will disappear mutually around the radiation out-phase of Laiing with the place ahead above, forward acoustic wave radiation energy generally is just weakened greatly, and this phenomenon is called " acoustic short circuit ".
In prior art, conventionally " acoustic short circuit " phenomenon is managed to eliminate, otherwise low frequency radiation effectively.But, if there is too much medium and low frequency sound loudspeaker front side, will affect the whole definition of sound.The utility model is that the forward and backward side of loudspeaker is communicated with by slit, effectively utilizes acoustic short circuit phenomenon to reach design object, by eliminate loudspeaker front side unnecessary in, low-frequency sound obtains more clear, thorough sound.
In order to reduce magnetic leakage, the bottom of described fore shell 1 is embedded with iron plate 13.
In the present embodiment, the bottom of described fore shell 1 is pasted with the first screen cloth, and described the first screen cloth is covered in front sound hole 11.Described back shroud 2 is pasted with the second screen cloth, and described the second screen cloth is covered in rear sound hole 20.These two screen cloths, as damping material, can provide trickleer regulating effect in conjunction with cavity design.In actual applications, also can be by adjusting the thickness of the quantity of the quantity of front sound hole 11 and aperture, rear sound hole 20 and aperture, the second protuberance 101, the size of the slit of side and adjust flexibly sound pressure level, audio etc. before and after being communicated with.
As a kind of optimal way, the outside of described fore shell 1 and be provided with cushion rubber 14 in the bottom of fore shell 1.
In the disclosed loud speaker of the utility model, a sound wave part for loudspeaker 3 rear sides is spread out of by rear sound hole 20, another part transfers to the front side of loudspeaker 3 via slit 12, and then produce acoustic short circuit phenomenon with the acoustic wave segment of loudspeaker 3 front sides, and utilize acoustic short circuit eliminate loudspeaker 3 front sides unnecessary in, low-frequency sound wave, thereby obtain more clear, thorough sound, and obtain the design effect of low distortion.This loud speaker has reduced the design difficulty of the parts such as the diaphragm, magnetic circuit, voice coil loudspeaker voice coil of loudspeaker, thereby is easier to realize.Meanwhile, the simplicity of design of L shaped projection 10, makes loud speaker have lower product cost and design cost.In addition, this loud speaker also reduces magnetic leakage by being embedded at the iron plate 13 of fore shell 1 bottom, further to improve the applicability of loudspeaker unit.
The above is the utility model preferred embodiment, is not limited to the utility model, all modifications of making in technical scope of the present utility model, is equal to and replaces or improvement etc., all should be included in the scope that the utility model protects.
Claims (5)
1. a loud speaker, it is characterized in that, include cup-shaped fore shell, be covered on the back shroud of fore shell and be located at the loudspeaker between the two, the bottom of described fore shell offers front sound hole, on described back shroud, offer rear sound hole, described fore shell inner side is formed with a plurality of L shaped projections, the first protuberance of described L shaped projection is positioned at the sidewall of fore shell, the second protuberance of described L shaped projection is positioned at the bottom of fore shell, described loudspeaker are carried on a plurality of L shaped projections, between adjacent two L shaped projections, be formed with slit, described slit is communicated with the forward and backward side of loudspeaker.
2. loud speaker as claimed in claim 1, is characterized in that, the bottom of described fore shell is embedded with iron plate.
3. loud speaker as claimed in claim 1, is characterized in that, the bottom of described fore shell is pasted with the first screen cloth, and described the first screen cloth is covered in front sound hole.
4. loud speaker as claimed in claim 1, is characterized in that, described back shroud is pasted with the second screen cloth, and described the second screen cloth is covered in rear sound hole.
5. loud speaker as claimed in claim 1, is characterized in that, the outside of described fore shell and be provided with cushion rubber in the bottom of fore shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475729.XU CN204014052U (en) | 2014-08-21 | 2014-08-21 | A kind of loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475729.XU CN204014052U (en) | 2014-08-21 | 2014-08-21 | A kind of loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204014052U true CN204014052U (en) | 2014-12-10 |
Family
ID=52053988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420475729.XU Expired - Fee Related CN204014052U (en) | 2014-08-21 | 2014-08-21 | A kind of loud speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204014052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635883A (en) * | 2016-02-25 | 2016-06-01 | 歌尔声学股份有限公司 | Earphone |
| CN109246560A (en) * | 2018-08-13 | 2019-01-18 | 歌尔股份有限公司 | Sounding device |
-
2014
- 2014-08-21 CN CN201420475729.XU patent/CN204014052U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635883A (en) * | 2016-02-25 | 2016-06-01 | 歌尔声学股份有限公司 | Earphone |
| CN109246560A (en) * | 2018-08-13 | 2019-01-18 | 歌尔股份有限公司 | Sounding device |
| CN109246560B (en) * | 2018-08-13 | 2020-05-22 | 歌尔股份有限公司 | Sound producing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203984671U (en) | Loud speaker module | |
| CN106341760B (en) | Coaxial moving-coil speaker and earphone | |
| CN103220608A (en) | Loudspeaker module | |
| TWM482225U (en) | Improved integrated electrostatic earphone monomer module structure | |
| CN204014052U (en) | A kind of loud speaker | |
| CN203827509U (en) | Loudspeaker single-body with sound chamber and electroacoustic product using loudspeaker single-body | |
| CN105704589A (en) | Earphone | |
| JP2965978B2 (en) | Speaker device | |
| CN204362280U (en) | Three frequency division is with chamber supercharging loud speaker | |
| CN201995113U (en) | Coaxial loudspeaker provided with double horns and waveguide tube | |
| CN204316703U (en) | Two rear sound chambeies earphone | |
| CN207235087U (en) | A kind of linear array speaker for being used for the academic cinema of business | |
| CN204350270U (en) | A kind of high sensitive miniature loudspeaker box | |
| CN203057482U (en) | Active double-membrane resonance one-piece voice box 2.1 | |
| CN215345058U (en) | Adjustable coaxial loudspeaker | |
| CN201039445Y (en) | TV set built-in sound box | |
| CN203872349U (en) | Loudspeaker unit with multi-range vents and electroacoustic product using the same | |
| CN206061072U (en) | Earphone | |
| CN203225866U (en) | Loudspeaker module | |
| CN206577396U (en) | Speaker unit | |
| CN104113796A (en) | Passive radiation type sound box improved structure | |
| CN207968806U (en) | A kind of earphone horn of high-fidelity | |
| TWM624217U (en) | Micro-speaker | |
| CN204014049U (en) | The earphone that the moving-coil of ear type and moving iron mix | |
| CN208227307U (en) | The one coaxial loudspeaking component of type spherical surface Whole frequency band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150821 |
|
| EXPY | Termination of patent right or utility model |