CN201114712Y - Earphone with acoustical filter - Google Patents
Earphone with acoustical filter Download PDFInfo
- Publication number
- CN201114712Y CN201114712Y CNU2007201290577U CN200720129057U CN201114712Y CN 201114712 Y CN201114712 Y CN 201114712Y CN U2007201290577 U CNU2007201290577 U CN U2007201290577U CN 200720129057 U CN200720129057 U CN 200720129057U CN 201114712 Y CN201114712 Y CN 201114712Y
- Authority
- CN
- China
- Prior art keywords
- receiver
- earphone
- protecting cover
- groove
- acoustic filter
- 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
- 238000009738 saturating Methods 0.000 claims description 9
- 230000008030 elimination Effects 0.000 description 8
- 238000003379 elimination reaction Methods 0.000 description 8
- 238000013016 damping Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 210000000613 ear canal Anatomy 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
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- Headphones And Earphones (AREA)
Abstract
The utility model relates to an earphone with an acoustic filter, which comprises a mini-receiver, a shell of the earphone and a protecting cover of the receiver that is arranged in front of the receiver and is closely jointed with the shell of the earphone, wherein, the outer edge of the protecting cover of the receiver is provided with a sound hole of the outer edge of the receiver; a groove is arranged at the position where the shell of the earphone is corresponding to the sound hole of the outer edge of the receiver. The earphone with the acoustic filter of the utility model forms a Helmholtz resonator to play the function of the acoustic filter by the protecting cover of the receiver, the sound hole of outer edge of the receiver and the corresponding groove which absorb redundant resonant energy to improve the frequency response characteristic of the earphone.
Description
Technical field
The utility model relates to earphone, more particularly, relates to a kind of earphone that has acoustic filter.
Background technology
In earphone, particularly in the ear-canal earphones, run into the tonequality that resonance peak influences earphone through regular meeting.Common way is to add damping material at the sound tube front end that is positioned at the receiver front.As shown in Figure 1, be the modular design of existing common ear-canal earphones.Wherein, the 1st, the receiver protecting cover is used to protect receiver diaphragm 3; 2 is earphone outer covering one, and it and earphone outer covering 26 are formed earphone outer coverings jointly; Front end at earphone outer covering 1 has a pipeline output sound, and damping material 17 just is arranged on the end of this pipeline.Absorb resonance by damping material 17, can improve earphone tonequality, but this method can cause high-frequency signal loss too much to make the high frequency response deficiency of earphone.Because damping material at the sound that absorbs resonance frequency simultaneously, also can absorb the sound of disresonance frequence.
The utility model content
The technical problems to be solved in the utility model is, at the above-mentioned defective of prior art, provides a kind of earphone at the band acoustic filter.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of earphone with acoustic filter, comprise: receiver, be arranged on the preceding protecting cover of described receiver, surround the earphone outer covering of whole receiver and protecting cover, be arranged on the sealing ring of earphone outer covering front end sound tube pipeline outer wall, wherein, the described protecting cover of being talked about is provided with interior and outer two kinds of senders, be provided with groove in the described earphone outer covering, the position of the outer sender of described protecting cover is corresponding with the groove on the described earphone outer covering.After receiver protecting cover and earphone outer covering fitted tightly, the groove shaped nucleation nurse Hertzian resonator by receiver protecting cover outer sender and correspondence position played acoustic filter.By adjusting the relative dimensions of sound hole and groove, make the resonance frequency of nuclear nurse Hertzian resonator consistent with the earphone resonance frequency that needs filtering, can reach the purpose of filtering or inhibition resonance.
Implement the earphone of band acoustic filter of the present utility model, have following beneficial effect:, and keep the high pitch effect of acoustic wave energy to obtain of disresonance frequence as much as possible by acoustic filter filtering resonance frequency acoustic wave energy.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a common ear-canal earphones structural representation in the prior art;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the structural representation of first embodiment of earphone of the utility model band acoustic filter;
Fig. 4 is the A-A cutaway view of Fig. 3;
Fig. 5 is the structural representation of second embodiment of earphone of the utility model band acoustic filter;
Fig. 6 is the A-A cutaway view of Fig. 5.
Fig. 7 is the structural representation of the 3rd embodiment of earphone of the utility model band acoustic filter;
Fig. 8 is the A-A cutaway view of Fig. 7.
Fig. 9 is the structural representation of the 4th embodiment of earphone of the utility model band acoustic filter;
Figure 10 is the A-A cutaway view of Fig. 9.
Among the figure: 1. receiver protecting cover; 2. earphone outer covering one; 3. receiver diaphragm; 4. receiver support; 5.U type cup; 6. earphone outer covering two; 7. voice coil loudspeaker voice coil; 8. front plate; 9. magnet; 10.PCB; 11. rivet; 12. sealing ring; 13. receiver protecting cover outer sender; 14. receiver central authorities sender; 15. the saturating sound mouth of groove; 16. groove; 17. damping material.
Embodiment
Shown in Fig. 3,4, be first embodiment of the earphone of band acoustic filter of the present utility model, Fig. 4 is the A-A cutaway view of Fig. 3.In this earphone; form receiver by receiver diaphragm 3, receiver support 4, U type cup 5, magnet 9, front plate 8, voice coil loudspeaker voice coil 7, PCB10, rivet 11; receiver protecting cover 1 is used to protect receiver diaphragm, adds the essential part of earphone outer covering 1 and earphone outer covering 26 composition earphones.Receiver protecting cover 1 is provided with receiver protecting cover outer sender 13 and receiver central authorities sender 14.Wherein receiver central authorities sender 14 is used for output sound to people's ear over against earphone outer covering sound tube road.It is corresponding with receiver protecting cover outer sender 13 to be provided with groove 16 and its position in earphone outer covering 1, after receiver protecting cover 1 and earphone outer covering one 2 fluid-tight engagement, the top of groove 16 is just sealed by receiver protecting cover 1 and is formed a cavity, and examines the nurse Hertzian resonators with receiver protecting cover outer sender 13 common formation.By the relative dimensions of groove 16 and sender 13 is set, make that the resonance frequency of nuclear nurse Hertzian resonator is consistent with the resonance frequency of desire elimination, by the resonance absorption resonant energy, thereby reach elimination or suppress the influence of resonance the performance of earphone sound.
Shown in Fig. 5,6, be second embodiment of the earphone of band acoustic filter of the present utility model, Fig. 6 is the A-A cutaway view of Fig. 5.In this earphone; form receiver by receiver diaphragm 3, receiver support 4, U type cup 5, magnet 9, front plate 8, voice coil loudspeaker voice coil 7, PCB10, rivet 11; receiver protecting cover 1 is used to protect receiver diaphragm, adds the essential part of earphone outer covering 1 and earphone outer covering 26 composition earphones.Receiver protecting cover 1 is provided with receiver central authorities sender 14, and its position is used for output sound to people's ear over against earphone outer covering sound tube road.Be provided with groove 16 at earphone outer covering one 2 inwalls, and the wall of groove 16 is provided with the saturating sound mouth 15 of groove, after receiver protecting cover 1 and earphone outer covering 1 fitted tightly, the open top of saturating sound mouth 15 was just sealed by receiver protecting cover 1, forms a hole; And the top of groove 16 is also sealed by receiver protecting cover 1 and is formed a cavity at this moment, so a nuclear nurse Hertzian resonator has just formed.By the relative dimensions of groove 16 and saturating sound mouth 15 is set, make that the resonance frequency of nuclear nurse Hertzian resonator is consistent with the resonance frequency of desire elimination, by the resonance absorption resonant energy, thereby reach elimination or suppress the influence of resonance the performance of earphone sound.
Shown in Fig. 7,8, be the 3rd embodiment of the earphone of band acoustic filter of the present utility model, Fig. 8 is the A-A cutaway view of Fig. 7.In this earphone; form receiver by receiver diaphragm 3, receiver support 4, U type cup 5, magnet 9, front plate 8, voice coil loudspeaker voice coil 7, PCB10, rivet 11; receiver protecting cover 1 is used to protect receiver diaphragm, adds the essential part of earphone outer covering 1 and earphone outer covering 26 composition earphones.Receiver protecting cover 1 is provided with receiver protecting cover outer sender 13 and receiver central authorities sender 14.Wherein receiver central authorities sender 14 is used for output sound to people's ear over against earphone outer covering sound tube road.The wall of erectting by inside and outside two circles on receiver protecting cover 1 forms a groove 16, after receiver protecting cover 1 and earphone outer covering one 2 fluid-tight engagement, the bottom of groove 16 is just sealed by earphone outer covering 1 and is formed a cavity, and examines the nurse Hertzian resonators with receiver protecting cover outer sender 13 common formation.By the relative dimensions of groove 16 and sender 13 is set, make that the resonance frequency of nuclear nurse Hertzian resonator is consistent with the resonance frequency of desire elimination, by the resonance absorption resonant energy, thereby reach elimination or suppress the influence of resonance the performance of earphone sound.
Shown in Fig. 9,10, be the 4th embodiment of the earphone of band acoustic filter of the present utility model, Figure 10 is the A-A cutaway view of Fig. 9.In this earphone; form receiver by receiver diaphragm 3, receiver support 4, U type cup 5, magnet 9, front plate 8, voice coil loudspeaker voice coil 7, PCB10, rivet 11; receiver protecting cover 1 is used to protect receiver diaphragm, adds the essential part of earphone outer covering 1 and earphone outer covering 26 composition earphones.Receiver protecting cover 1 is provided with receiver central authorities sender 14, and its position is used for output sound to people's ear over against earphone outer covering sound tube road.The wall of erectting by inside and outside two circles on receiver protecting cover 1 forms a groove 16, and the wall of groove 16 is provided with the saturating sound mouth 15 of groove, after receiver protecting cover 1 and earphone outer covering 1 fitted tightly, the bottom opening of saturating sound mouth 15 was just sealed by earphone outer covering 1, forms a hole; And the bottom of groove 16 is also sealed by earphone outer covering 1 and is formed a cavity at this moment, so a nuclear nurse Hertzian resonator has just formed.By the relative dimensions of groove 16 and saturating sound mouth 15 is set, make that the resonance frequency of nuclear nurse Hertzian resonator is consistent with the resonance frequency of desire elimination, by the resonance absorption resonant energy, thereby reach elimination or suppress the influence of resonance the performance of earphone sound.
Claims (6)
1. earphone with acoustic filter, comprise: receiver and earphone outer covering, be provided with receiver protecting cover (1) in receiver the place ahead, receiver protecting cover (1) fits together closely with earphone outer covering one (2), it is characterized in that: be provided with receiver outer sender (13) in the outer of receiver protecting cover (1), on earphone outer covering, be provided with groove (16) with the corresponding position of receiver outer sender (13).
2. the earphone of band acoustic filter according to claim 1 is characterized in that: the wall of groove (16) is provided with the saturating sound mouth of groove (15), simultaneously the receiver protecting cover outer sender (13) on the receiver protecting cover (1) is sealed.
3. the earphone of band acoustic filter according to claim 2 is characterized in that: keep the saturating sound mouth of receiver protecting cover outer sender (13) and groove (15) simultaneously.
4. according to the earphone of the described band acoustic filter of claim 1～3, it is characterized in that: groove (16) is arranged on the receiver protecting cover (1).
5. according to the earphone of the described band acoustic filter of claim 1～4, it is characterized in that: receiver protecting cover (1) is not set directly on the receiver, but one independently plays the parts of same function.
6. according to the earphone of the described band acoustic filter of claim 1～4, it is characterized in that: receiver protecting cover (1) lumps together a part that forms the receiver support with the part of receiver support (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201290577U CN201114712Y (en) | 2007-08-14 | 2007-08-14 | Earphone with acoustical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201290577U CN201114712Y (en) | 2007-08-14 | 2007-08-14 | Earphone with acoustical filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114712Y true CN201114712Y (en) | 2008-09-10 |
Family
ID=39966461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201290577U Expired - Fee Related CN201114712Y (en) | 2007-08-14 | 2007-08-14 | Earphone with acoustical filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201114712Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102318368A (en) * | 2009-02-11 | 2012-01-11 | 森海塞尔电子股份有限及两合公司 | Earpiece |
-
2007
- 2007-08-14 CN CNU2007201290577U patent/CN201114712Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102318368A (en) * | 2009-02-11 | 2012-01-11 | 森海塞尔电子股份有限及两合公司 | Earpiece |
| CN102318368B (en) * | 2009-02-11 | 2015-02-18 | 森海塞尔电子股份有限及两合公司 | Earpiece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20090914 |