CN214591895U - Ear canal type earphone with improved radio reception and noise reduction structure - Google Patents
Ear canal type earphone with improved radio reception and noise reduction structure Download PDFInfo
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- CN214591895U CN214591895U CN202120211654.4U CN202120211654U CN214591895U CN 214591895 U CN214591895 U CN 214591895U CN 202120211654 U CN202120211654 U CN 202120211654U CN 214591895 U CN214591895 U CN 214591895U
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Abstract
The ear canal earphone with improved sound receiving and noise reducing structure has one casing with holding space, and circuit board parallel to the holding space and between the front wall and the back wall is set inside the holding space; a main microphone for picking up voice and a noise reduction microphone for picking up environmental noise are arranged on the circuit board, and a main sound hole and a noise reduction sound hole which respectively correspond to the main microphone and the noise reduction microphone are formed in the shell; the shell is provided with a cylindrical isolation structure on the rear wall of the accommodating space, the noise reduction sound hole is directly communicated with the isolation structure, and the noise reduction sound hole is matched with the isolation structure to form a sound collecting channel of the noise reduction microphone; still dispose a rubber circle between isolation structure's opening and the circuit board, the rubber circle is by the tight fit between isolation structure's opening and circuit board to make the sound collection passageway of falling the microphone of making an uproar be independent of the accommodation space of casing, it is better to keep apart the effect, has promoted the radio reception directive property of falling the microphone of making an uproar, helps improving the radio reception of earphone and falls the performance of making an uproar.
Description
Technical Field
The utility model relates to an electroacoustic technology field, specific is a improve ear canal formula earphone of structure of making an uproar falls in radio reception.
Background
The auditory canal type earphone is an earphone, and on the basis of a common earphone, the auditory canal type earphone can be inserted into the auditory canal by a plug of colloid when in use, so that better auditory canal tightness is obtained, the performance effect of the earphone is greatly increased, and the earphone has the advantages of small volume, sound leakage prevention and isolation of the influence of external noise on playing.
For an in-ear earphone with a microphone for receiving sound, besides a main microphone for picking up voice is disposed in the earphone, a noise reduction microphone for picking up ambient noise is also disposed in the earphone to recognize and isolate the ambient noise mixed in the voice.
Because the ear canal earphone is small in size, the ear canal earphone in the prior art is provided with a noise reduction microphone on a circuit board inside the earphone, in order to obtain a better noise reduction microphone sound receiving effect, a rubber ring surrounding the noise reduction microphone is also arranged on the circuit board, the rubber ring is tightly matched between the circuit board and a shell of the earphone to form an independent cavity for isolating the noise reduction microphone, and meanwhile, a sound hole corresponding to the independent cavity is formed in the shell of the earphone.
The applicant researches and discovers that in the technical scheme, the noise reduction microphone is isolated only by the rubber ring, the isolation effect is poor, the sound reception directivity of the noise reduction microphone is poor, and the quality of the obtained environmental noise signal is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a great deal of not enough to above-mentioned prior art provides an improve ear canal formula earphone of structure of making an uproar falls in radio reception, and technical scheme is as follows.
The ear canal type earphone with the improved sound receiving and noise reducing structure is provided with a shell with an accommodating space, the shell is provided with an earplug head formed by bulging on the front wall of the accommodating space, a loudspeaker is assembled inside the earplug head, the outer end of the earplug head is provided with a colloid plug head used for being inserted into an ear canal, a circuit board parallel to the accommodating space and arranged between the front wall and the rear wall of the accommodating space is arranged in the accommodating space of the shell, and the circuit board provides an electroacoustic signal for the loudspeaker; a main microphone for picking up voice and a noise reduction microphone for picking up environmental noise are arranged on the circuit board, and a main sound hole and a noise reduction sound hole which respectively correspond to the main microphone and the noise reduction microphone are formed in the shell;
the shell is provided with a cylindrical isolation structure on the rear wall of the accommodating space, an opening of the isolation structure faces the circuit board, the noise reduction microphone is located in the opening range of the isolation structure, the noise reduction sound hole is directly communicated with the isolation structure, and a sound collection channel of the noise reduction microphone is formed by matching the noise reduction sound hole and the isolation structure;
a rubber ring is arranged between the opening of the isolation structure and the circuit board, and the rubber ring is tightly matched between the opening of the isolation structure and the circuit board, so that the sound collection channel of the noise reduction microphone is independent of the accommodating space of the shell.
Compared with the prior art, the beneficial effects of the utility model reside in that:
make the sound collection passageway of falling the microphone of making an uproar through isolation structure cooperation rubber circle and be independent of the accommodation space of casing, it is better to keep apart the effect, has promoted the radio reception directive property of falling the microphone of making an uproar, and the environmental noise signal quality of acquireing is better, helps improving the radio reception of earphone and falls the performance of making an uproar.
The present invention will be further described with reference to the drawings and the detailed description.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic structural diagram of the circuit board of the present invention.
Fig. 4 is a schematic structural diagram of the middle rubber ring of the present invention.
Detailed Description
As shown in fig. 1 to 4, the ear canal type earphone with improved sound receiving and noise reducing structure comprises a housing 1 with a containing space therein, the housing 1 has a raised earplug head 2 at the front wall of the containing space, a speaker 3 is arranged inside the earplug head 2, the outer end of the earplug head 2 is provided with a colloid plug 4 for being inserted into the ear canal, a circuit board 5 parallel to the containing space is arranged in the containing space of the housing 1, and the circuit board 5 provides an electroacoustic signal for the speaker 3; a main microphone 61 for picking up voice and a noise reduction microphone 62 for picking up environmental noise are arranged on the circuit board 5, and a main sound hole 11 and a noise reduction sound hole 12 corresponding to the main microphone 61 and the noise reduction microphone 62 respectively are formed on the shell 1;
a cylindrical isolation structure 13 is formed on the rear wall of the accommodating space of the shell 1, the opening of the isolation structure 13 faces the circuit board 5, the noise reduction microphone 62 is positioned in the opening range of the isolation structure 13, the noise reduction sound hole 12 is directly communicated with the isolation structure 13, and the noise reduction sound hole 12 is matched with the isolation structure 13 to form a sound collecting channel of the noise reduction microphone 62;
a rubber ring 7 is further disposed between the opening of the isolation structure 13 and the circuit board 5, and the rubber ring 7 is tightly fitted between the opening of the isolation structure 13 and the circuit board 5, so that the sound collection channel of the noise reduction microphone 62 is independent of the accommodating space of the housing 1.
In the above technical scheme, the ear canal earphone with the improved radio reception noise reduction structure enables the sound collection channel of the noise reduction microphone 62 to be independent of the accommodating space of the shell 1 through the matching of the isolation structure 13 and the rubber ring 7, the isolation effect is better, the radio reception directivity of the noise reduction microphone 62 is improved, the acquired environmental noise signal quality is better, and the improvement of the radio reception noise reduction performance of the earphone is facilitated.
As an improvement of the above technical scheme, the periphery of the rubber ring 7 is formed with the flange 71 sleeved on the isolation structure 13, and the flange 71 and the outer wall of the isolation structure 13 form a tight fit, so that the rubber ring 7 is assembled more firmly and has a better isolation effect.
As another improvement of the above technical solution, the noise reduction microphone 62 is disposed on a side of the circuit board 5 opposite to the isolation structure 13, and the circuit board 5 is provided with a sound collection hole 51 leading into the isolation structure 13 for the noise reduction microphone 62 to collect sound.
As a further improvement of the above technical solution, the noise reduction sound hole 12 is provided at the top end of the housing 1. In view of the wearing manner of the ear canal type earphone, the top end of the housing 1 is the best ambient noise sound receiving point, so the noise reduction sound hole 12 is arranged at the top end of the housing 1, which can pick up the ambient noise in the largest range, and contributes to improving the sound receiving and noise reducing performance of the earphone.
In a preferred embodiment, the isolation structure 13 is filled with a sponge-like sound absorbing material 8. The sound absorbing piece 8 is also arranged to improve the sound receiving and noise reducing performance of the earphone.
For those skilled in the art, the protection scope of the present invention is not limited to the details of the above-described exemplary embodiments, and all the embodiments with variations within the scope and meaning equivalent to the elements of the present invention should be included in the present invention without departing from the spirit or essential characteristics of the present invention.
Claims (5)
1. The ear canal type earphone with the improved sound receiving and noise reducing structure is provided with a shell with an accommodating space, the shell is provided with an earplug head formed by bulging on the front wall of the accommodating space, a loudspeaker is assembled inside the earplug head, the outer end of the earplug head is provided with a colloid plug head used for being inserted into an ear canal, a circuit board parallel to the accommodating space and arranged between the front wall and the rear wall of the accommodating space is arranged in the accommodating space of the shell, and the circuit board provides an electroacoustic signal for the loudspeaker; a main microphone for picking up voice and a noise reduction microphone for picking up environmental noise are arranged on the circuit board, and a main sound hole and a noise reduction sound hole which respectively correspond to the main microphone and the noise reduction microphone are formed in the shell;
the method is characterized in that:
the shell is provided with a cylindrical isolation structure on the rear wall of the accommodating space, an opening of the isolation structure faces the circuit board, the noise reduction microphone is located in the opening range of the isolation structure, the noise reduction sound hole is directly communicated with the isolation structure, and a sound collection channel of the noise reduction microphone is formed by matching the noise reduction sound hole and the isolation structure;
a rubber ring is arranged between the opening of the isolation structure and the circuit board, and the rubber ring is tightly matched between the opening of the isolation structure and the circuit board, so that the sound collection channel of the noise reduction microphone is independent of the accommodating space of the shell.
2. The ear canal earphone with improved sound reception and noise reduction structure as set forth in claim 1, wherein: the periphery of the rubber ring is formed with a flange which is sleeved on the isolation structure, and the flange and the outer wall of the isolation structure form a tight fit.
3. The ear canal earphone with improved sound reception and noise reduction structure as set forth in claim 1, wherein: the noise reduction microphone is arranged on the side of the circuit board opposite to the isolation structure, and the circuit board is provided with a sound collection hole communicated with the isolation structure so that the noise reduction microphone can collect sound.
4. The ear canal earphone with improved sound reception and noise reduction structure as set forth in claim 1, wherein: the noise reduction sound hole is formed in the top end of the shell.
5. The ear canal earphone with improved sound reception and noise reduction structure as claimed in claim 1, 2, 3 or 4, wherein: the isolation structure is filled with a spongy sound absorbing piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120211654.4U CN214591895U (en) | 2021-01-26 | 2021-01-26 | Ear canal type earphone with improved radio reception and noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120211654.4U CN214591895U (en) | 2021-01-26 | 2021-01-26 | Ear canal type earphone with improved radio reception and noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214591895U true CN214591895U (en) | 2021-11-02 |
Family
ID=78371411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120211654.4U Active CN214591895U (en) | 2021-01-26 | 2021-01-26 | Ear canal type earphone with improved radio reception and noise reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214591895U (en) |
-
2021
- 2021-01-26 CN CN202120211654.4U patent/CN214591895U/en active Active
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