CN110677756A

CN110677756A - Structure of earphone for controlling pressure reduction and sound release

Info

Publication number: CN110677756A
Application number: CN201810813061.8A
Authority: CN
Inventors: 王士俊; 郭泰呈; 孙珮铃
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-03
Filing date: 2018-07-23
Publication date: 2020-01-10
Anticipated expiration: 2038-07-23
Also published as: JP6595056B1; TWI702852B; CN110677756B; TW202007182A; JP2020010307A

Abstract

The invention discloses a structure for controlling pressure reduction and sound leakage of an earphone, wherein a front end, a rear end and an air flow channel are arranged on an earphone body, the air flow channel penetrates through the front end and the rear end, and the earphone body is provided with an accommodating space; a loudspeaker, which is arranged in the accommodating space and is correspondingly provided with a vibrating membrane; the silencing unit is arranged in the air flow channel and is provided with an input end and an output end, a plurality of silencing cavities communicated with each other are arranged between the input end and the output end, and the inner walls of the silencing cavities are respectively provided with a conical shape gradually expanding from the input end to the output end. Thereby, the sound attenuation cavity can prevent sound waves from leaking, and the effects of effectively attenuating the sound waves, improving the bass tone quality and the like are achieved.

Description

Structure of earphone for controlling pressure reduction and sound release

Technical Field

The present invention relates to the field of earphone technology, and more particularly to a structure of earphone for controlling pressure reduction and sound leakage, which can improve the quality of bass sound and reduce sound wave leakage.

Background

A commonly used earphone structure at present, such as a new earphone of moving coil piezoelectric dual-audio speaker M529998 issued in taiwan in china in 2016, 10, 1, discloses: a housing and a compound speaker unit; the inner part of the shell is hollow to form an inner cavity; the combined type loudspeaker unit sets up among the inner chamber of shell, includes: a basin cavity, a moving coil speaker, a piezoelectric speaker and a circuit unit; the basin cavity is a container with a bottom and forms a basin cavity therein, the basin cavity is provided with an opening, the piezoelectric type speaker is arranged in the opening of the basin cavity, the mobile speaker is arranged in the basin cavity and is arranged between the piezoelectric type speaker and the bottom of the basin cavity, the circuit unit is arranged outside the bottom of the basin cavity and is used for electrically connecting the mobile speaker, the piezoelectric type speaker and an external sound source circuit; the moving coil speaker and the piezoelectric speaker are arranged in the structure of the basin cavity together, so that the assembly yield can be improved, the occupied space in the inner cavity can be reduced, and the effects of expanding the bandwidth and improving the resolution and the high frequency can be achieved.

The earphone of the prior patent has the following defects in use:

1. when the earphone is worn on the ear, the ear canal can be closed by the earphone, so that sound waves generated by the vibrating membrane can be transmitted back and forth between the earphone and the ear canal, abnormal pressure is generated on the ear canal by the sound waves, and discomfort is caused to a user.

2. The sound waves transmitted back and forth in the auditory canal can cause reverse depression force to the vibration membrane, so that the subsequent sound waves emitted by the vibration membrane are influenced, and the tone quality is distorted, particularly the middle-high tone and the high-high tone are influenced more obviously.

Therefore, there is a patent of "earphone providing ear canal decompression and natural sound quality improvement and its manufacturing method" in patent No. I628961 issued in taiwan in china in 7/1/2018, which discloses: the earphone includes: the earphone body is provided with an air flow channel which penetrates through the earphone body, a containing space is arranged in the earphone body, and a vibration film is arranged in the containing space; a loudspeaker, which is arranged in the containing space and corresponds to the vibrating membrane. When a user wears the earphone body on the ear, the ear canal of the ear is communicated with the outside by virtue of the air flow channel, sound waves generated by the vibration membrane can not be transmitted back and forth in the ear canal after being reflected by the eardrum, and can be transmitted to the outside from the air flow channel, so that abnormal pressure caused by the sound waves to the eardrum can be reduced, the force of backward depression caused by the sound waves to the vibration membrane due to reflection can be avoided, and the sound quality is distorted.

Although the air flow channel directly and unimpededly penetrates through the front end, the central position and the rear end of the earphone body, after the sound wave generated by the vibration membrane is output, the sound wave is reflected by the eardrum and then cannot be transmitted back and forth in the ear canal, and the sound wave can be directly transmitted to the outside through the air flow channel, so that abnormal pressure on the eardrum caused by the back and forth transmission of the sound wave is reduced. With the structure, the sound wave is directly transmitted to the outside through the air flow channel, and part of the sound wave is leaked out and heard by people around the earphone. While the bass quality is also affected.

Accordingly, the present invention has been made in view of the above-described phenomenon of the conventional earphone structure.

Disclosure of Invention

The invention aims to provide a structure for controlling pressure reduction and sound leakage of an earphone, which achieves the effects of effectively attenuating sound waves, improving the bass tone quality and the like.

Based on the above, the present invention mainly adopts the following technical means to achieve the above object.

A structure of earphone for controlling pressure reduction and sound release comprises: the earphone body is provided with a front end, a rear end and an air flow channel, the air flow channel penetrates through the front end and the rear end, and the earphone body is provided with an accommodating space; the loudspeaker is arranged in the accommodating space and is correspondingly provided with a vibrating membrane; the silencing unit is arranged in the air flow channel and is provided with an input end and an output end, the input end is communicated with the air flow channel, and at least one silencing cavity is arranged in the silencing unit.

Furthermore, the inner wall of the sound-deadening cavity is a conical shape gradually expanding from the input end to the output end.

Furthermore, the inner wall of the silencing cavity is in a pyramid shape, a spherical shape, a cylindrical shape, a quadrangle shape, a pentagon shape, a honeycomb shape or a polygonal shape.

Furthermore, a plurality of sound-deadening cavities communicated with each other are arranged between the input end and the output end in the sound-deadening unit.

Further, the silencing unit is arranged in the air flow passage at a position close to the rear end.

Further, the input end is located inside the air flow passage, and the output end is located outside the air flow passage.

Furthermore, the accommodating space is arranged at a position close to the periphery of the air flow channel in the earphone body.

Furthermore, the loudspeaker signal is connected with a signal line, and the signal line penetrates through the earphone body.

After the technical means are adopted, the invention has the following advantages:

1. the inner wall of the sound deadening cavity is respectively provided with a conical shape or a pyramid shape, a spherical shape, a cylindrical shape, a quadrangle shape, a pentagon shape, a honeycomb shape and a polygon shape which are gradually expanded, so that the transmission speed of a part of sound waves can be reduced, the sound waves are delayed, the part of the sound waves can not be leaked to the outside and can not be heard by people around the earphone, and the effects of inhibiting and reducing the leakage of the sound waves can be achieved.

2. The sound waves pass through each sound attenuation cavity of the sound attenuation unit in sequence and then are transmitted to the outside through the output end, so that the sound waves can be effectively attenuated, the low-pitched sound quality can be improved, the sound quality distortion cannot be caused, and the low-pitched sound can be improved to avoid excessive reduction.

3. When a user wears the earphone body on the ear, the ear canal of the ear is communicated with the outside by the air flow channel, and sound waves generated by the vibration membrane are reflected by the eardrum and cannot be transmitted back and forth in the ear canal and are transmitted to the outside from the air flow channel, so that abnormal pressure on the eardrum caused by back and forth transmission of the sound waves can be reduced, and the earphone is comfortable to use.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is a combined sectional view of an embodiment of the present invention.

FIG. 3 is an enlarged view of the portion III of FIG. 2 according to the embodiment of the present invention.

Fig. 4 is a schematic view of the embodiment of the present invention placed in the ear.

FIG. 5 is a schematic diagram of sound wave attenuation according to an embodiment of the present invention.

Fig. 6 is an enlarged view of the portion VI of fig. 5 according to the embodiment of the present invention.

[ notation ] to show

1 earphone body

11 front end

12 rear end

13 air flow passage

14 space for accommodating

2 loudspeaker

21 vibration diaphragm

22 signal line

3 silencing unit

31 input terminal

32 output terminal

33 sound deadening chamber

34 conical shape

A ear

A1 auditory canal

A2 eardrum.

Detailed Description

Referring to fig. 1 and 2, an embodiment of the present invention includes: earphone body 1, speaker 2 and amortization unit 3, wherein:

the earphone body 1 has a front end 11, a rear end 12, and an air channel 13 passing through the front end 11 and the rear end 12. An accommodating space 14 is disposed inside the earphone body 1 near the periphery of the air flow channel 13.

The speaker 2 is disposed in the accommodating space 14 of the earphone body 1. The speaker 2 is correspondingly provided with a vibration film 21, and the speaker 2 is connected with a signal line 22 through the earphone body 1.

And a silencer unit 3 disposed in the air flow passage 13 at a position close to the rear end 12. The muffler unit 3 has an input end 31 and an output end 32, wherein the input end 31 is located inside the air flow channel 13 and is communicated with the air flow channel 13. And the output end 32 is located outside the air flow channel 13. The interior of the sound-deadening unit 3 is provided with a plurality of sound-deadening chambers 33 (as shown in fig. 3) which are communicated with each other, and the inner wall of each sound-deadening chamber 33 is provided with a conical shape 34 which is gradually expanded from the input end 31 to the output end 32, so as to effectively attenuate the transmission of sound waves. In addition, the inner wall of each muffling cavity 33 in the embodiment of the present invention can be designed to be pyramid, sphere, cylinder, quadrangle, pentagon, honeycomb or polygon, so as to achieve the effect of effectively attenuating the transmission of sound waves.

In use, as shown in fig. 4 and 5, the front end 11 of the earphone body 1 is worn in an ear a, so that the front end 11 of the earphone body 1 can be in close contact with an ear canal a1 of the ear a, thereby fixing the earphone body 1. When playing audio, a voice signal is externally input through the signal line 22 and transmitted to the speaker 2. The speaker 2 generates a sound wave after vibrating through the vibrating membrane 21, and the sound wave can be output from the front end 11 of the earphone body 1 through the air flow channel 13 and then enter the ear canal a1 of the ear a. When the sound wave is reflected from an eardrum a2 of the ear a, the sound wave is reflected back to the air channel 13 through the ear canal a1, and then the sound wave passes through the air channel 13 and sequentially enters the sound-deadening chamber 33 through the input end 31 of the sound-deadening unit 3 (as shown in fig. 6), and when the sound wave enters the first sound-deadening chamber 33 close to the input end 31, the conical shape 34 with the gradually expanding inner wall of the sound-deadening chamber 33 can reduce the transmission speed of a part of the sound wave, so as to generate the phenomenon of sound wave retardation. The sound waves sequentially pass through each independent sound-deadening cavity 33 and are finally transmitted to the outside through the output end 32 of the sound-deadening unit 3, so that after the sound waves are attenuated, no part of the sound waves leak out of the earphone body 1 and are heard by people around the earphone. Meanwhile, the sound waves can be effectively attenuated, the excessive raising of low frequency is avoided, and therefore the bass tone quality can be improved without causing tone quality distortion. Meanwhile, the air channel 13 penetrating the front end 11 and the rear end 12 of the earphone body 1 can directly connect the ear canal a1 of the ear a to the outside, so that the sound wave is not transmitted back and forth in the ear canal a1, the pressure in the ear canal a1 can be balanced, and the pressure in the ear canal a1 can be relieved, thereby reducing the abnormal pressure of the sound wave on the eardrum a 2. Therefore, it is within the scope of the present invention to provide the structure of the sound-deadening unit 3 and the sound-deadening chamber 33 thereof, regardless of whether the earphone is an earmuff type earphone or an earplug type earphone, or any other type of earphone, such as an ear-canal type earphone, an ear-hook type earphone, a neck-hook type earphone, a bluetooth wireless earphone, a full-hood type headset, an anti-noise type earphone, a half-hood type headset, a rear-open type earphone or a rear-closed type earphone.

The operation, use and efficacy of the present invention can be fully understood from the description of the embodiments, which are given by way of illustration only, and the scope of the invention should not be limited thereby, i.e., the invention is intended to cover various modifications and equivalents.

Claims

1. A structure of earphone for controlling pressure reduction and sound release, comprising:

the earphone body is provided with a front end, a rear end and an air flow channel, the air flow channel penetrates through the front end and the rear end, and the earphone body is provided with an accommodating space;

the loudspeaker is arranged in the accommodating space and is correspondingly provided with a vibrating membrane;

the silencing unit is arranged in the air flow channel and is provided with an input end and an output end, the input end is communicated with the air flow channel, and at least one silencing cavity is arranged in the silencing unit.

2. The earphone structure for controlling pressure reduction and sound leakage of claim 1, wherein: the inner wall of the sound-deadening cavity is a conical shape gradually expanding from the input end to the output end.

3. The earphone structure for controlling pressure reduction and sound leakage of claim 1, wherein: the inner wall of the silencing cavity is in a pyramid shape, a spherical shape, a cylindrical shape, a quadrangle shape, a pentagon shape, a honeycomb shape or a polygonal shape.

4. The earphone structure for controlling pressure reduction and sound leakage of claim 1, wherein: and a plurality of sound-deadening cavities communicated with each other are arranged between the input end and the output end in the sound-deadening unit.

5. The earphone structure for controlling pressure reduction and sound leakage of claim 1, wherein: the silencing unit is arranged in the air flow passage and close to the rear end.

6. The earphone structure for controlling pressure reduction and sound leakage of claim 1, wherein: the input end is positioned inside the air flow passage, and the output end is positioned outside the air flow passage.

7. The earphone structure for controlling pressure reduction and sound leakage of claim 1, wherein: the accommodating space is arranged in the earphone body and close to the periphery of the air flow channel.

8. The earphone structure for controlling pressure reduction and sound leakage of claim 1, wherein: the loudspeaker signal is connected with a signal line, and the signal line penetrates through the earphone body.