KR20170003072A - Small Sized Canal-typed Earphone using piezo unit - Google Patents

Small Sized Canal-typed Earphone using piezo unit Download PDF

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Publication number
KR20170003072A
KR20170003072A KR1020150093250A KR20150093250A KR20170003072A KR 20170003072 A KR20170003072 A KR 20170003072A KR 1020150093250 A KR1020150093250 A KR 1020150093250A KR 20150093250 A KR20150093250 A KR 20150093250A KR 20170003072 A KR20170003072 A KR 20170003072A
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KR
South Korea
Prior art keywords
sound
earphone
dynamic driver
housing
unit
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KR1020150093250A
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Korean (ko)
Inventor
권영건
최용선
Original Assignee
(주) 씨엔씨글로벌솔루션
권영건
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Priority to KR1020150093250A priority Critical patent/KR20170003072A/en
Publication of KR20170003072A publication Critical patent/KR20170003072A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/02—Transducers using more than one principle simultaneously

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)

Abstract

The present invention relates to a small-sized canal type earphone using a piezoelectric unit. According to the present invention, the canal type earphone comprises: a bushing provided inside with a wire which transfers an electrical signal of a sound from an earphone jack; a housing continuously connected to the bushing and being a region which receives the electrical signal and plays as sounds; a hollow nozzle being a sound delivery region formed in a front part of the housing; an elastic ear tip, detachably coupled by insertion in a sound delivery direction in the hollow nozzle, part or all of which is inserted into an ear canal of the user; a piezoelectric unit disposed inside the housing and disposed in a plate-shaped form perpendicular to the sound delivery direction to the hollow nozzle to output sounds transmitted as the electrical signal as sounds toward the nozzle; and a dynamic driver disposed in a rear part of the piezoelectric unit and outputting the sounds transmitted as the electrical signal as the sounds toward the nozzle through a perimeter of the piezoelectric unit. According to the present invention, since a sound output region from the piezoelectric unit, which is mainly advantageous for generating a high-pitched sound, and a sound output region from the dynamic driver, which is mainly advantageous for generating a low-pitched sound, are mutually blocked from each other, mutual sound interference is absent when initial sound is generated, and all the sound can be transferred to the ears of a user, so the sound can be listened with high sound quality without degradation of sound quality of the entire sound range from a low-pitched sound to a high-pitched sound.

Description

[0001] The present invention relates to a small-sized canal-type earphone using a piezoelectric unit,

[0001] The present invention relates to an earphone using a piezo unit, and more particularly to a small-sized earphone capable of transmitting a low sound region and a high sound region with good sound quality without mutual interference.

Earphones are largely classified into canal type earphones and open type earphones. As shown in Fig. 1, the canal type earphone has a structure in which external noise is blocked and a sound is heard through the eardrum. The canal earphone of this structure clearly transmits the sound directly to the eardrum by blocking the external noise more clearly than the open earphone.

Such a canal type earphone is classified into a form in which a dynamic driver is adopted as shown in FIG. 2 and a form in which a balanced armature is adopted as shown in FIGS. As used herein, the term "dynamic driver" is used in a general type earphone in such a manner that a coil is wound around a permanent magnet under a vinyl plate or a diaphragm to make a sound. As used herein, the term " balanced amature "means that the alternator electric current is applied to the coil so that the oscillator of the armature placed between the permanent magnets is changed into the N and S poles by the electromagnet principle, This vibration vibrates the thin metal diaphragm through the metal pin to reproduce by sound. It is usually used in high-end earphones.

Particularly, FIG. 3 shows an inner appearance of a cannular earphone to which one balanced armature is applied, and FIG. 4 shows an inner appearance of a cannular earphone to which two balanced armatures are applied. In the case of a cannular earphone with a dynamic driver, it is vulnerable to high frequencies, while a cannon earphone with a balanced armature is somewhat vulnerable. In the latter case, a balanced amateur based on bass sounds is added to reinforce the weak bass region, but the balanced amateur itself is expensive, which leads to a considerable cost burden.

In order to solve this problem, the inventor of the present invention filed a patent application on Sep. 19, 2011, and disclosed Korean Patent No. 10-1185803 (entitled "Small Canal Earphone ") registered on September 19, 2012, The earphone proposed by the present inventor has a limitation in realizing a sound of the highest quality on the space utilization side or the war criminal in the earphone proposed by the inventor of the present invention.

Korean Patent No. 10-0770590 (published on October 22, 2007, entitled "Speaker for Earphone and Earphone") discloses a speaker structure capable of realizing multiple sounds by a single speaker. The earphone speaker according to this patent document includes a diaphragm for vibrating air on the inner space of the ear canal according to a first electrical signal inputted thereto and a bone transducer for vibrating the bone through the inner surface of the ear canal according to a second electrical signal to be inputted . Korean Registered Patent No. 10-1185803 (entitled "Small Canal Earphone" Registered on Sep. 19, 2012)

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a cannular earphone of an improved structure capable of listening to high quality sound without interfering with not only high- There is.

In order to achieve the above and other objects,

A bushing in which an electric wire for transmitting an electrical signal of sound from the earphone jack is provided therein;

A housing connected to the bushing and connected to the bushing, the housing being adapted to receive an electrical signal and reproduce sound;

A hollow nozzle which is an acoustic emission region formed in front of the housing;

An elastic ear tip which is detachably fitted to the hollow nozzle in an acoustic dispensing direction and is partly or wholly inserted into an ear canal of a user;

A piezo unit arranged inside the housing and arranged in the form of a plane perpendicular to the direction of sound emission to the hollow nozzle, for outputting sound acoustically transmitted by the electric signal toward the nozzle; And

And a dynamic driver disposed behind the piezo unit and configured to acoustically output sound transmitted through an electrical signal toward the nozzle through the periphery of the piezo unit.

In the present invention, the sound from the piezo unit is sent directly toward the hollow nozzle, and the sound from the dynamic driver is transmitted toward the hollow nozzle via the periphery of the piezo unit, And the sound from the piezo unit and the sound from the dynamic driver are transmitted to the front of the piezo unit.

According to an embodiment of the present invention, a cap is provided on an inner circumferential surface of the housing, the dynamic driver is inserted into a rear portion of the cap, and the dynamic driver is disposed in front of the cap at a predetermined distance from the dynamic driver. A piezo unit is mounted on the piezoelectric actuator, and sound is emitted from the dynamic driver through the periphery of the piezo unit.

In one embodiment of the present invention, a plurality of open portions are formed at regular intervals around a front side of the housing, and a plurality of open portions are formed at an inner side between the open portion and the neighboring open portions, And a cap having a stepped portion formed outwardly on the rear side thereof,

Wherein a dynamic driver is mounted on the rear side stepped portion and a space between the dynamic driver and the piezoelectric unit and a space between the hollow nozzle and the dynamic portion So that they can communicate with each other.

According to another aspect of the present invention, there is provided a sound absorbing device comprising: a sound absorbing member provided on an inner circumferential surface of a housing, a stepped portion formed on an inner side of a front side and a rear side on an outer side, Is provided,

Wherein a space between the dynamic driver and the piezo-electric unit and a space between the hollow nozzle and the piezo-electric unit is formed in the front-side hole, So that they can communicate with each other.

In the present invention, the acoustic frequency applied to the piezo unit is relatively larger than the acoustic frequency from the dynamic driver.

According to the present invention, since the acoustic output area from the piezo unit, which is mainly advantageous to generate treble sound, and the acoustic output area from the dynamic driver, which is advantageous to generate mainly bass, are physically shielded from each other, When each sound is transmitted to the user's ear without interference, the sound is transmitted and transmitted together, so that it is possible to listen to the sound with good sound quality without damaging the sound quality to the low, middle, and high sounds.

1 is a partially exploded perspective view of a canal type earphone to which the configuration of the present invention can be applied.
FIG. 2 is a cross-sectional view of a main portion of a conventional earphone to which a conventional dynamic driver is applied.
FIG. 3 is a fragmentary cross-sectional view of a conventional earphone of a cannon type to which a conventional balanced armature is applied.
Fig. 4 is a cross-sectional view of a main portion of a conventional earphone of a conventional balanced armature in two applied forms. Fig.
5 is a fragmentary cross-sectional view of a canal type earphone according to one preferred embodiment of the present invention.
6 is a perspective view of a speaker unit applied to a canal type earphone shown in Fig.
7 is a perspective exploded perspective view of the speaker unit shown in Fig.
Fig. 8 is a perspective exploded perspective view of the speaker unit shown in Fig. 7 viewed from another angle. Fig.
9 is a fragmentary sectional view of a canal type earphone according to another preferred embodiment of the present invention.
FIG. 10 is a view showing the main part of the speaker unit applied to the canal type earphone shown in FIG. 9, wherein FIG. 10 (a) is a top view and FIG. 10 (b) is a main sectional view.
11 is a diagram schematically showing a main part of a dynamic driver applied to a canal type earphone according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail with reference to the following illustrative drawings. In describing the present invention, a description of known functions or configurations will be omitted for the sake of clarity of the present invention.

5 to 8 show a canal type earphone according to one preferred embodiment of the present invention. 6 is a perspective view of a main part of a speaker unit applied to a canal type earphone shown in Fig. 5, Fig. 7 is a perspective view showing a main part of a canal type earphone according to one preferred embodiment of the present invention, And FIG. 8 is a perspective exploded perspective view of the speaker unit shown in FIG. 7 viewed from another angle. 11 is a diagram schematically showing a main part of a dynamic driver applied to a canal type earphone according to the present invention.

As used herein, the term "dynamic driver" is used in a general type of earphone in such a manner that a coil is wound around a permanent magnet under a vinyl plate or a diaphragm to make a sound. The present invention includes both of these methods. Thus, unless otherwise stated, the term "dynamic driver" as used herein should be understood to include all of the above schemes.

The term "piezo unit " as used herein should be understood to mean an element or a unit that generates vibration by applying a piezoelectric ceramics instead of a permanent magnet and a coil, for example, as a vibration generating part in general. The principle of piezo itself is well known in the art.

As used herein, the terms "forward" or "front end" and "rearward" or "rear end" refer to the direction in which sound is transmitted and transmitted through a hollow nozzle, The front end or the front end of the earphone is positioned at the end of the earphone, and the portion where the sound is ultimately transmitted is referred to as the rear or rear end.

Further, the present invention is applied to a canal type earphone. However, it goes without saying that the present invention can also be applied to an open type earphone in which the length of a nozzle described later is secured.

5, a canal type earphone 1 according to one preferred embodiment of the present invention includes an earphone jack (not shown) for receiving sound from a sound device as an electrical signal, A bushing 10 connected to an earphone jack, a housing 20 connected to the bushing 10, a nozzle 30 formed in front of the housing 20, and an ear tip (40).

The bushing 10 is provided therein with an electric wire for transmitting an electrical signal of the sound from the earphone jack.

The housing 20, which is connected to the bushing 10 continuously, is equipped with a unit for receiving an electrical signal and regenerating the sound again. This will be described later. The housing 20 is preferably composed of at least two parts in order to more easily mount the unit as described above. Here, the rear housing is referred to as a first housing 20a for convenience's sake, and the front housing is referred to as a second housing 20b or a cover 20b.

In the front of the housing 20, there is provided a hollow nozzle 30 which is an area through which sound is delivered. The shape of the nozzle 30 is not limited, but a cylindrical hollow shape as shown in FIG. 1 is preferable in view of the fact that the human ear is circular.

As shown in FIG. 1, the eartip 40 is detachably fitted to the hollow nozzle 30. The ear tip 40 should be resilient because it is a part that is inserted into the user's ear. As the material of the ear tip 40, a silicon material is mainly used. In addition, the elastic ear tip 40 should have a shape and a size matching the user's external ear canal.

In particular, referring to FIG. 5, a piezoelectric unit 60 as a speaker unit 50 and a dynamic driver 70 are included in a canal type earphone according to one preferred embodiment of the present invention. The definitions of the piezo unit 60 and the dynamic driver 70 are described above. 11, one dynamic driver 70 that can be used in the present invention includes a diaphragm 72, a metal pin 74 connected to the lower portion of the diaphragm 72, A coil 78 and a magnet 80 disposed between the magnet 74 and the vibrating plate 76 disposed above the magnet 80. Reference numeral 80 denotes a face ratio. The dynamic driver 70 sounds by winding a coil on a vinyl plate or a permanent magnet under the diaphragm.

The piezo unit 60 is disposed inside the housing. In this case, as shown in FIG. 5, the sound is arranged in a plate-like shape perpendicular to the direction of sound transmission to the hollow nozzle 30, and the sound transmitted through the electric signal is output to the hollow nozzle 30 as sound.

A dynamic driver (70) is disposed behind the piezoelectric unit (60). At this time, the dynamic driver 70 outputs sound transmitted through the electric signal to the hollow nozzle 30 through the periphery of the piezo unit 60 as sound.

That is, the speaker unit 50 is configured such that the sound from the piezo unit 60 is directly fed toward the hollow nozzle 30, and the sound from the dynamic driver 70 is transmitted to the piezo unit 60 And the sound is emitted from the piezo unit 60 and the sound from the dynamic driver 70 to the front of the piezo unit 70. [ . As a result, not only the low sound level by the dynamic driver 70 but also the high sound level by the piezo unit 60 and the middle sound level are realized, so that high quality sound is transmitted from the low sound level to the high sound level.

5 to 8, a cap 56 is provided on the inner circumferential surface of the housing 20, and the dynamic driver 70 is inserted into the rear of the cap 56 And the piezoelectric unit 60 is mounted on the front of the cap 56 with a predetermined distance from the dynamic driver 70.

At this time, the sound from the dynamic driver (70) is transmitted through the periphery of the piezo unit (60).

To this end, more specifically, the cap 56 is formed with a plurality of open portions 58 at regular intervals around the front, and between the open portion 58 and the adjacent open portion 58 A stepped portion is formed on the inside and a stepped portion is formed on the outside.

A dynamic driver (70) is mounted on the rear side stepped portion and a space between the dynamic driver (70) and the piezo unit (60) The space between the hollow nozzles 30 is configured to communicate with each other through the open portion 58.

Alternatively, as shown in Figs. 9 and 10, a portion of the cap 56A of the dynamic driver 70 may be deformed to make an acoustic emission hole 58A separately, and an inner all- And the piezo unit 60A is inserted in a state of being spaced apart from the piezo unit 60A.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that it is possible.

1: Canal type earphone 10: Bushing
20: housing 20a: first housing (or housing)
20b: the second housing (or cover)
30: nozzle 32: mesh or nonwoven fabric
40: ear tip 50: speaker unit
60: Piezo unit 70: Dynamic driver

Claims (5)

A bushing in which an electric wire for transmitting an electrical signal of sound from the earphone jack is provided therein;
A housing connected to the bushing and connected to the bushing, the housing being adapted to receive an electrical signal and reproduce sound;
A hollow nozzle which is an acoustic emission region formed in front of the housing;
An elastic ear tip which is detachably fitted to the hollow nozzle in an acoustic dispensing direction and is partly or wholly inserted into an ear canal of a user;
A piezoelectric unit disposed inside the housing and arranged in a plate-like shape perpendicular to the direction of sound emission to the hollow nozzle, for outputting sound acoustically transmitted by the electric signal toward the nozzle; And
And a dynamic driver disposed behind the piezo unit and configured to acoustically output sound transmitted through an electrical signal toward the nozzle through the periphery of the piezo unit. The method according to claim 1,
And the sound from the dynamic driver is sent out toward the hollow nozzle via the periphery of the piezo unit so that the sound from the piezo unit can be emitted from the piezo unit, Wherein the sound and the sound from the dynamic driver are transmitted together in front of the piezo unit. The method according to claim 1 or 2,
The dynamic driver is inserted into a rear portion of the cap, and the piezo unit is mounted on the front side of the cap at a predetermined distance from the dynamic driver And a sound from the dynamic driver is transmitted through the periphery of the piezo unit. The method according to claim 1 or 2,
Wherein a plurality of open portions are formed at predetermined intervals around the front portion of the housing and a stepped portion is formed on an inner side between the opened portion and the neighboring open portion, A cap having a stepped portion formed outwardly in the rear thereof,
Wherein a dynamic driver is mounted on the rear side stepped portion and a space between the dynamic driver and the piezoelectric unit and a space between the hollow nozzle and the dynamic portion Wherein the earphone is configured to communicate with the earphone through the earphone. The method according to claim 1 or 2,
A cap provided on an inner circumferential surface of the housing and having a stepped portion formed on an inner side of an inner side of a front side and a rear side of a front side and a plurality of holes formed on a circumference of the front side stepped portion in a direction of sound delivery And,
Wherein a space between the dynamic driver and the piezo-electric unit and a space between the hollow nozzle and the piezo-electric unit is formed in the front-side hole, Wherein the earphone is configured to communicate with the earphone through the earphone.
KR1020150093250A 2015-06-30 2015-06-30 Small Sized Canal-typed Earphone using piezo unit KR20170003072A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022069935A1 (en) * 2020-09-29 2022-04-07 Adapto Global ApS Modular earpiece adaptor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100770590B1 (en) 2004-11-11 2007-10-29 주성대학산학협력단 Speaker, ear-phone and speaker for ear-phone
KR101185803B1 (en) 2011-09-19 2012-10-02 권영건 Small sized canal-typed earphone

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100770590B1 (en) 2004-11-11 2007-10-29 주성대학산학협력단 Speaker, ear-phone and speaker for ear-phone
KR101185803B1 (en) 2011-09-19 2012-10-02 권영건 Small sized canal-typed earphone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022069935A1 (en) * 2020-09-29 2022-04-07 Adapto Global ApS Modular earpiece adaptor
US11991495B2 (en) 2020-09-29 2024-05-21 Adapto Global ApS Modular earpiece adaptor

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