CN212183714U - Headphones with improved feedback channel - Google Patents

Abstract

The utility model discloses an earphone with improved feedback sound channel, which comprises a shell, a sound production unit and a feedback unit, wherein the sound production unit comprises a sound production body and a sound production surface arranged on the sound production body, the sound production body is arranged in the shell and divides the shell into a front cavity and a rear cavity, and the sound production surface faces the front cavity; the feedback unit comprises a radio body and a radio surface arranged on the radio body, the radio body is arranged in the rear cavity, and the radio surface is used for receiving the sound from the front cavity; the utility model discloses a rear chamber is arranged in to the radio reception body, does benefit to the front chamber volume miniaturization, and the comfort level is worn with effective the promotion to the equipment of being convenient for.

Description

Headphones with improved feedback channel

Technical Field

The utility model relates to an earphone technical field especially relates to an earphone with improve feedback sound channel.

Background

The earphone is a device which is popular with people and is used for enjoying music and assisting voice communication. The earphones comprise various forms and are divided according to wearing modes, and comprise head earphones, ear-hanging earphones, in-ear earphones and the like; the wireless earphone is divided into wired earphones and wireless earphones according to the communication mode with the signal source. The basic principle of different types of headphones is to convert an audio signal into a sound wave that is perceptible to humans through loudspeakers located close to the user's ears.

Since the headset needs to be used close to the ear, the headset will form a somewhat closed space near the user's ear. The principle of the earphone with active noise reduction popular in the market is that a noise reduction system generates sound waves with the same frequency as external noise but opposite phases to neutralize the noise, so that the active noise reduction effect is realized. Practice proves that the noise reduction effect of the active noise reduction earphone can far exceed that of the passive noise reduction earphone. The earphone with active noise reduction is characterized in that a feedback microphone is added into an earphone sound channel to detect sound waves and perform feedback calculation to determine whether the sound waves are consistent with the sound played by a loudspeaker, and if the sound waves are not consistent with the sound played by the loudspeaker, interference adjustment is performed to enable the next played sound to be consistent with the expected played sound. The position of the feedback microphone in active noise reduction is important.

However, most of the existing feedback microphones are located on the front cavity wall, and placing the feedback microphones in the front cavity will undoubtedly result in the volume increase of the front cavity, and the front cavity is usually the side of the earphone facing the ear, therefore, the volume increase of the front cavity will result in the increase of the ear-entering part of the earphone, thereby increasing the wearing difficulty and the wearing comfort of the user. In addition, the front cavity structure of the earphone is relatively complex relative to the rear cavity, and the feedback microphone is arranged in the front cavity, so that the assembly difficulty is increased undoubtedly, and the yield is increased easily.

Therefore, there is a need for a headphone with an improved feedback channel to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an earphone with improve feedback sound channel, the back chamber is arranged in to its radio reception body, does benefit to the miniaturization of front chamber volume, is convenient for assemble and effectively promotes and wears the comfort level.

In order to realize the purpose, the utility model discloses an earphone with improved feedback sound channel, which comprises a shell, a sound production unit and a feedback unit, wherein the sound production unit comprises a sound production body and a sound production surface arranged on the sound production body; the feedback unit comprises a radio body and a radio surface arranged on the radio body, the radio body is arranged in the rear cavity, and the radio surface is used for receiving sound from the front cavity.

Compared with the prior art, the utility model discloses a rear chamber is located to the radio reception body of feedback unit, and the radio reception face is used for receiving the sound that comes from the ante-chamber, on the one hand, avoids establishing the feedback unit in the ante-chamber and occupies the finite space in ante-chamber to cavity volume before can furthest's reduction effectively reduces the volume of going into the ear, promotes greatly and wears the comfort level and reduces the degree of difficulty, and avoids concentrating the components and parts and arrange in the ante-chamber, effectively reduces the equipment degree of difficulty, effectively reduces because the equipment is complicated and the defective products that lead to.

Preferably, a feedback sound channel with two open ends is arranged in the shell, and the feedback sound channel is communicated with the front cavity and the sound receiving surface.

Specifically, the earphone with the improved feedback sound channel further comprises a sound guide microphone sleeve, the sound guide microphone sleeve is arranged in the shell, the feedback sound channel is formed in the sound guide microphone sleeve, the first end of the feedback sound channel is communicated with the front cavity, and the second end of the feedback sound channel is in butt joint with the sound receiving surface.

Preferably, the second end is hermetically sleeved on the sound receiving surface.

Preferably, the earphone with the improved feedback sound channel further comprises a control circuit, the sounding body is electrically connected with the control circuit, the feedback unit further comprises a flexible circuit, and the flexible circuit is electrically connected with the sound receiving body and the control circuit respectively.

Specifically, the sound guide microphone sleeve is provided with a through hole for the flexible circuit to pass through.

Preferably, the sound conducting microphone sleeve is a silica gel piece.

Preferably, the sound receiving body is arranged in the rear cavity and close to the front cavity.

Preferably, the sound receiving surface is arranged on the back or front of the sound receiving body.

Preferably, the earphone with the improved feedback sound channel further includes a protective sleeve, the casing protrudes outwards to form an ear portion, the ear portion penetrates through the ear portion to form a sound outlet channel, one end of the sound outlet channel, which is far away from the front cavity, forms the sound outlet hole, the front cavity is communicated with the external environment through the sound outlet hole, and the protective sleeve is sleeved on the ear portion and exposes the sound outlet hole to the external environment.

Drawings

Fig. 1 is a schematic structural diagram of the earphone with improved feedback channel of the present invention.

Fig. 2 is an exploded view of the earphone with improved feedback channel of the present invention.

Fig. 3 is a perspective view of the earphone with improved feedback channel, in which the feedback unit is of a back-in type.

Fig. 4 is a perspective view of the earphone with improved feedback channel, in which the feedback unit is forward-type.

Fig. 5 is a circuit block diagram of the earphone with improved feedback channel of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1 to 5, the earphone 100 with the improved feedback channel 41 of the present embodiment is suitable for miniaturizing the front cavity 11 to reduce the assembly difficulty and improve the wearing comfort of the user, and the earphone 100 with the improved feedback channel 41 includes a housing 10, a sound generating unit 20, a feedback unit 30 and a control circuit 50, where the sound generating unit 20 is a speaker, and the feedback unit 30 is a feedback microphone of a type of MEMS.

Wherein, sound generating unit 20 includes sound generating body 21 and locates the sound surface 22 on sound generating body 21, and sound generating body 21 locates in casing 10 to separate preceding chamber 11 of formation and back chamber 12 with casing 10, its sound surface 22 towards preceding chamber 11, preferred person, sound generating body 21 installation is fixed in the casing 10 inner wall. The feedback unit 30 includes a sound receiving body 31 and a sound receiving surface 32 disposed on the sound receiving body 31, the sound receiving body 31 is disposed in the rear cavity 12, and the sound receiving surface 31 is used for receiving the sound from the front cavity 11, wherein the sound includes the sound emitted by the sound emitting unit 20 and the noise from the external environment. Preferably, the sound receiving body 31 is installed in the rear cavity 12 near the front cavity 11 and fixed on the inner wall of the casing 10 corresponding to the rear cavity 12, so as to shorten the distance between the sound receiving body 31 and the sound generating body 21, and avoid the need to set the length of the rear cavity 12 too long and/or the volume too large because the feedback unit 30 is disposed at the rear position of the rear cavity 12.

The sounding body 21 is directly electrically connected with the control circuit 50 through a cable, and the control circuit 50 controls the sounding body 21 to play audio signals. The feedback unit 30 is electrically connected to the control circuit 50, and the feedback unit 30 feeds back the monitored noise to the control circuit 50 for the control circuit 50 to adjust in real time to perform active noise reduction operation, thereby reducing the influence of the noise on the user.

The sound receiving surface 32 in this embodiment may be disposed on the back surface of the sound receiving body 31, or may be disposed on the front surface of the sound receiving body 31, when the sound receiving surface 32 is disposed on the back surface of the sound receiving body 31 as shown in fig. 3, the feedback unit 30 in this embodiment is a feedback microphone of a type of back-surface sound receiving, and at this time, the front surface of the sound receiving body 31 is fixed on the inner wall of the casing 10, so as to fix the feedback unit 30; when the sound receiving surface 32 is disposed on the front surface of the sound receiving body 31 as shown in fig. 4, the feedback unit 30 of the present embodiment is a front type sound receiving feedback microphone, and the back surface of the sound receiving body 31 is fixed on the inner wall of the casing 10 to fix the feedback unit 30. The above arrangement enables the earphone 100 with the improved feedback channel 41 of the present embodiment to adapt to various types of feedback microphones with the sound receiving surface 32 located at different positions of the sound receiving body 31, and the adaptability is stronger, so that the feedback microphones can be flexibly selected according to requirements.

Referring to fig. 2-5, the casing 10 of the present embodiment has a feedback channel 41 with two open ends, the feedback channel 41 communicates the front cavity 11 and the sound receiving surface 32, and the feedback unit 30 receives the sound from the front cavity 11 through the feedback channel 41. Specifically, the earphone 100 with the improved feedback channel 41 further comprises a sound guide sleeve 40, the sound guide sleeve 40 is disposed in the casing 10 in a stacking/pressing manner, the sound guide sleeve 40 is internally and penetratingly formed with the feedback channel 41 with two open ends, wherein a first end 411 of the feedback channel 41 is communicated with the front cavity 11, a second end 412 is connected with the sound receiving surface 32 in an abutting manner, and sound in the front cavity 11 enters the feedback channel 41 from the first end 411 and enters the rear cavity 12 from the second end 412 for being received by the sound receiving surface 32.

Preferably, the second end 412 of the feedback channel 41 is hermetically sleeved on the sound receiving surface 32, so that on one hand, the sound entering the feedback channel 41 from the first end 411 can be completely received by the sound receiving surface 32, and on the other hand, the feedback unit 30 can only receive the sound from the front cavity 11, thereby preventing the external irrelevant sound from entering the feedback unit 30 and preventing the external irrelevant sound from affecting the normal operation of the feedback unit 30.

Preferably, the sound guide microphone cover 40 of the present embodiment is specifically a silicone member, which is soft and can generate a better sealing effect by stacking/extruding, and the silicone member is easy to be shaped, and the shape of the silicone member may be a regular shape or an irregular shape to adapt to different installation environments. Of course, the material and shape of the sound guiding sleeve 40 are not limited to the above-mentioned materials, provided that the sound guiding sleeve 40 can provide the feedback channel 41 for the sound of the front cavity 11 to be transmitted to the sound receiving surface 32 in a sealed manner.

Furthermore, the sound guide microphone sleeve 40 is formed with a through hole 42 for the flexible circuit 33 to pass through, the feedback unit 30 further comprises a flexible circuit 33, the flexible circuit 33 is electrically connected with the sound receiving body 31 and the control circuit 50 respectively, when being installed, the flexible circuit 33 directly passes through the sound conducting microphone sleeve 40 through the through hole 42 to be respectively and electrically connected with the sound receiving body 31 and the control circuit 50, and the electric connection mode of matching the flexible circuit 33 and the through hole 42 can avoid that when the sound receiving body 31 is directly and electrically connected with the control circuit 50 through a cable, the cable of the sound generating unit 20 must bypass the edge of the sound generating unit to complete the electrical connection with the control circuit 50, which effectively reduces the difficulty of the electrical connection between the feedback unit 30 and the control circuit 50, and the flexible circuit 33 is used for replacing the cable, so that the phenomenon that after the assembly is finished, the sound leakage caused by the gap formed by the parts in the assembly process can be prevented by a process of dispensing sealant, and the assembly process is effectively reduced.

Referring to fig. 1-4, the earphone 100 with the improved feedback channel 41 of the present embodiment further includes a protective sleeve (not shown), the casing 10 protrudes outward to form the ear portion 13, the ear portion 13 penetrates to form the sound outlet channel 131, one end of the sound outlet channel 131 far away from the front cavity 11 forms the sound outlet hole 1311, the front cavity 11 is communicated with the external environment through the sound outlet hole 1311, and the protective sleeve is sleeved on the ear portion 13 and exposes the sound outlet hole 1311 to the external environment.

Combine fig. 1-fig. 5, the utility model discloses a feedback unit 30's radio reception body 31 locates in the casing 10, and radio reception face 32 is towards rear chamber 12, on the one hand, avoid establishing feedback unit 30 in front chamber 11 and occupy the finite space of front chamber 11, thereby chamber 11 volume before the reduction that can furthest, effectively reduce the volume of going into ear 13, promote greatly and wear the comfort level and reduce and wear the degree of difficulty, and avoid concentrating components and parts and arrange front chamber 11, effectively reduce the equipment degree of difficulty, effectively reduce because the equipment is complicated and the defective products that lead to.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (10)

1. A headphone with an improved feedback channel, comprising:

a housing;

the sounding unit comprises a sounding body and a sounding surface arranged on the sounding body, the sounding body is arranged in the shell and divides the shell into a front cavity and a rear cavity, and the sounding surface faces the front cavity;

the feedback unit comprises a radio body and a radio surface arranged on the radio body, the radio body is arranged in the rear cavity, and the radio surface is used for receiving sound from the front cavity.

2. The headphone with an improved feedback channel as in claim 1, wherein: the shell is internally provided with a feedback sound channel with two open ends, and the feedback sound channel is communicated with the front cavity and the sound receiving surface.

3. The headphone with an improved feedback channel as in claim 2, wherein: the sound guide microphone is arranged in the shell, the feedback sound channel is formed in the sound guide microphone, the first end of the feedback sound channel is communicated with the front cavity, and the second end of the feedback sound channel is in butt joint with the sound receiving surface.

4. A headphone having an improved feedback channel as claimed in claim 3, wherein: the second end is in sealed sleeve joint with the sound receiving surface.

5. A headphone having an improved feedback channel as claimed in claim 3, wherein: still include control circuit, the sound production body electricity is connected control circuit, the feedback unit still includes flexible circuit, flexible circuit electricity respectively connects the radio reception body with control circuit.

6. The headphone with an improved feedback channel as in claim 5, wherein: the sound guide microphone sleeve is provided with a through hole for the flexible circuit to pass through.

7. A headphone having an improved feedback channel as claimed in claim 3, wherein: the sound conduction microphone sleeve is a silica gel piece.

8. The headphone with an improved feedback channel as in claim 1, wherein: the radio body is arranged in the rear cavity and close to the front cavity.

9. The headphone with an improved feedback channel as in claim 1, wherein: the sound receiving surface is arranged on the back or the front of the sound receiving body.

10. The headphone with an improved feedback channel as in claim 1, wherein: still include the protective sheath, the casing is to the protruding formation of stretching into the ear of stretching outward, it runs through and forms out the sound passageway to go into the ear, it keeps away from to go out the sound passageway the one end of antechamber forms out the sound hole, the antechamber borrows by go out sound hole intercommunication external environment, the protective sheath cover is established go into the ear and make it exposes in external environment to go out the sound hole.

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