KR100550972B1 - Earphone - Google Patents

Abstract

The present invention relates to an earphone having a speaker unit of a size that can be inserted into the ear in front of the earphone so as to be inserted into the inside of the ear to prevent external noise while being easily inserted for a long time without ear pain. The present invention is a speaker unit for converting an electrical signal from the outside into a voice signal; A housing in which the speaker unit is mounted at the front and an air circulation space is formed at the rear to achieve an air circulation with the speaker unit; A rear cap coupled to the rear side to seal the housing and inserting a signal line receiving a signal from the outside to guide the signal line to the speaker unit of the housing; And an outer ear canal insert earphone surrounding the housing outside the speaker unit and including a silicon cap formed to be elastically inserted into the ear canal entrance of the ear.

Speaker, Groove, Magnet, Diaphragm, Voice Coil, Wire

Description

Ear canal insertion earphones {earphone}

1 is a cross-sectional view showing a state in which a conventional earphone is coupled to the ear.

2 is a cross-sectional view showing the structure of a conventional insert earphone.

3 is a perspective view of the ear canal earphone of the present invention.

Figure 4 is an exploded view of the ear canal insert earphone of the present invention.

5 is a cross-sectional view of the speaker unit of FIG. 4.

6 is a partially cutaway perspective view illustrating the inside of the speaker unit of FIG. 4.

7 is a cross-sectional view of the ear canal earphone of the present invention.

8 is a view showing a state in which the ear canal insert earphone of the present invention is coupled to the ear.

Explanation of symbols on the main parts of the drawings

10: speaker unit 20: housing

30: silicone cap 40: rear cap

50: guider 60: signal line

14: inlet groove 23: air circulation space

The present invention relates to an earphone having a speaker unit of a size that can be inserted into the ear in front of the earphone so as to be inserted into the inside of the ear to prevent external noise while being easily inserted for a long time without ear pain.

The conventional earphone 100 was used to fit the outer portion 3 of the ear as shown in FIG. However, these earphones are easily released during use, and there is a problem that the sound is not effectively delivered to the eardrum mixed with external noise. These earphones are not good adhesion between the ear and the earbuds, the air in the ear is easily released, and because of this, the pressure in the ear drops, so that the bass is easily leaked. This phenomenon causes the bass region to deliver insufficient sound.

Recently, the ear canal insert earphone is developed instead of the general earphone. 2 is related to Korean Patent Laid-Open Publication No. 2000-77482, "Earphone", and has a speaker device 101, a housing 102 having a hole for emitting sound from the front of the speaker device, and housing the speaker device. And an elastic orifice wearing member 117 disposed around the hole, and the space sealed by the drum membrane, the speaker device, and the orifice wearing member when the earphone is worn on the orifice is a ventilation resistor 123. It discloses an earphone that is in communication with the outside of the earphone through.

In FIG. 2, the speaker device 101 accommodated in the housing 102 has a diaphragm 103 and a magnetic circuit portion 104 for vibrating the vibrating plate. The diaphragm and the magnetic circuit part are accommodated in the housing case 105, and the orifice wearing member 117 is formed in the recess 121 at the front end of the orifice insertion part and the base of the fitting part 118 to be detachably installed. do.

The earphone of FIG. 2 also has a speaker device 101 having a size used for a conventional earphone and is formed at the same position as a conventional earphone, but has an orifice insert 115 having a diameter that can be inserted into an ear at a front portion of the speaker device. ) Was formed. However, the insertion portion 115 is inserted into the ear has a certain length, the sound loss occurs in the process of transmitting the sound through the insertion portion, the center of gravity of the earphone is in the portion that is not inserted into the ear earphones There is a disadvantage that the structure can be easily separated.

The present invention has been made to solve the above problems, an object of the present invention is to provide a earphone having a small speaker unit arranged in the front side of the sound transfer of the earphone, thereby improving the sound transfer characteristics in the ear-insert earphone. .

In addition, an object of the present invention is to provide an earphone to form an airflow space on the rear side of the speaker unit of the earphone, to form a sealed type so that air is blocked from the outside to improve the sound quality, and to achieve more efficient sound transmission. do.

In addition, an object of the present invention is to provide an earphone that can be easily attached and detached by attaching a guide to the rear side of the earphone to facilitate insertion into the ear.

As a construction means for achieving the above object, the present invention provides a speaker unit for converting an electrical signal from the outside into a voice signal; A housing in which the speaker unit is mounted at the front and an air circulation space is formed at the rear to achieve an air circulation with the speaker unit; A rear cap coupled to the rear side to seal the housing and inserting a signal line receiving a signal from the outside to guide the signal line to the speaker unit of the housing; And surrounding the housing outside the speaker unit, the ear canal of the ear is formed to be elastically inserted into the inlet, penetrated inside, and a stepped portion having a diameter larger than the diameter of the front side is formed on the rear side, and the inner front side is It provides an ear canal insert earphone including a; silicon cap formed to expose the front surface of the speaker unit.

Preferably the speaker unit comprises a diaphragm; A magnet arranged in a lower portion of the diaphragm and formed in a ring shape; A frame in which the diaphragm and the magnet are mounted, and at least one inlet groove is formed on an inner side of the diaphragm to allow the outside air to flow along the side of the magnet; A substrate arranged under the magnet and receiving electrical signals from the outside; A voice coil arranged at a lower portion of the diaphragm and a central portion of the magnet and electrically connected to the substrate; And a grill arranged at an upper portion of the diaphragm, mounted to an upper opening of the frame, and having a plurality of through holes formed therein to transmit sound generated from the diaphragm to the outside.

Also preferably the diaphragm is a biaxially stretched polyethylene naphthalate (PEN) film formed to a thickness of 4.2-6 μm. In addition, the frame is formed of an upper and lower frame that can be fitted to each other, the inlet groove is preferably formed in the upper and lower frames, respectively.

The frame may further include at least one circulation groove formed along the side surface of the magnet from between the magnet and the diaphragm so as to circulate air located between the diaphragm and the magnet.

In addition, the silicon cap is penetrated inside, a stepped portion having a diameter larger than the diameter of the front side is formed on the rear side, and the grille of the speaker unit is exposed inside the silicon cap.

Also preferably, the housing may have a cylindrical shape in which the front and rear sides are opened, and the frame of the speaker unit is fitted to the front, and the rear of the speaker unit forms an air circulation with the speaker unit to resonate the sound from the speaker unit. A space above the speaker unit insertion space may be formed.

Also preferably, the housing is provided with a coupling protrusion protruding along the circumferential surface to the outside, and a ring-shaped guide inserting portion having a groove formed inwardly so that the coupling protrusion is inserted, and protruding rearward in a vertical direction with the insertion portion. It may further include a guide including a guide frame to form a.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 3 is a perspective view of the ear canal earphone of the present invention.

The ear canal refers to the tunnel-shaped part from the ear canal (early entrance) to the eardrum. Until now, all general earphones have been used over a relatively large portion of the ear (refer to FIG. 2). However, such a fastening structure is easy to fall out during use, and the sound quality is degraded during the sound transmission process.

Accordingly, the present invention proposes an ear canal insert earphone which is inserted into the ear canal of the ear to block noise from the outside and there is no deterioration of sound quality in the sound transmission process. 3 is a perspective view of such an ear canal insert earphone 1.

In the front part of the earphone (the part close to the eardrum of the ear is called the front part), a silicon cap 30 is arranged, and the silicon cap 30 is fitted in the housing 20. The guide 50 is coupled to the outside of the housing to facilitate detachment. A signal line 60 receiving a signal from the outside enters the inside from the rear side of the housing 20, which is connected to a speaker unit (not shown in FIG. 3) located at the front part of the housing.

4 is an exploded view of the ear canal earphone of the present invention, Figure 7 is a cross-sectional view of the ear canal earphone of the present invention. The ear canal insert earphone of the present invention includes a cylindrical housing 20. The housing 20 has an opening formed at the front side to mount the speaker unit 10 at the front side, and an air circulation space 23 is formed at the rear side to achieve air circulation with the speaker unit 10.

The speaker unit 10 is mounted to the front of the housing 20. The speaker unit 10 mounted to the earphone of the present invention is located in front of the earphone and arranged in the position closest to the eardrum than other earphone components. The speaker unit 10 can be arranged in the front side of the earphone in this way because the size of the speaker unit can be made smaller than before, and the structure of such a speaker unit will be described in detail.

Speaker unit

5 is a cross-sectional view of the speaker unit according to the present invention. The speaker unit according to the present invention includes a frame (10a) formed in a cylindrical shape on the outside, the inside of the frame (10a) includes a diaphragm 12, magnet 18, yoke, substrate 17 and the like.

First, the diaphragm 12 is formed of a thin film vibration film, and the thickness is selected to match the acoustic frequency according to the design value. As the vibrating film, a polyester film is used, in particular, a biaxially stretched polyester naphthalate (PEN) film.

The polyester film has excellent tensile strength, impact strength, rupture strength, etc. due to the rigid molecular chain structure, and also has an appropriate elongation. The film has a melting point of about 266 degrees, and particularly has excellent thermal dimensional stability with a glass transition temperature of 123 degrees. The diaphragm uses a film of 4.2 ~ 6 ㎛ depending on the acoustic frequency of the design value. The smaller the thickness of the film, the better the sound quality.

In the upper side of the diaphragm 12, as shown in the cross section of FIG. The voice coil 11 is a current is input to create a magnet and an electromagnetic field to function to cause the vibration of the diaphragm.

The voice coil 11 is located in a space formed at the center of the magnet 18. The magnet 18 is formed in a ring shape so that the voice coil 11 is located at the center thereof, and is formed to be supported while being in contact with the inner surface of the frame 26. The magnet 18 is supported via the yoke 27, in particular at the bottom. The yoke 27 has a central portion projecting upward to be inserted and supported at the center of the ring magnet 18.

The lower part of the yoke is arranged with a substrate 17 which receives an input of an electrical signal from the outside and transmits it to the voice coil. In addition, a grill 13 having a plurality of holes is arranged on the upper surface of the diaphragm 12.

The speaker unit frame according to the present invention is characterized in that it comprises an inlet groove 14 formed on the inner surface to allow the inflow (or outflow) of the outside air along the side of the magnet. In addition, in addition to the inlet groove, the circulation groove may be additionally formed, and each frame is formed by separating the upper and lower frames and combining them.

6 is a perspective view illustrating the frame 26 of the speaker unit 10. In the frame of the present invention, at least one inlet groove 14 is formed to allow inflow (or outflow) of outside air. In order to form the inlet groove 14, the upper frame and the lower frame may be separately assembled. The upper frame and the lower frame may have a structure in which the coupling protrusion and the coupling groove are coupled to each other to be fitted. However, the coupling structure of the upper frame and the lower frame is not limited thereto.

The frame 26 is formed in a cylindrical shape in this embodiment, and a protrusion 28 protruding a predetermined length in a ring shape is formed inside. The protrusion 28 functions to partition the space to form a space between the diaphragm 12 and the magnet 18, and the diaphragm 12 is adhesively arranged on the top of the protrusion 28.

The inlet groove 14 of the frame is a groove formed with a predetermined width from the lower surface of the frame 26 to a lower portion of the protrusion 28, where air from the outside is introduced or air between the diaphragm and the magnet is outside. It acts as a passageway to allow the gas to be discharged. That is, when the magnet 18 is in contact with the lower surface of the protrusion 28 and the inner surface of the frame when the inlet groove 14 is formed only on the inner surface of the frame it is blocked by the magnet to provide an air inflow (outflow) effect You will not be able to. Therefore, in order to form the inlet groove inlet to the protrusion, the inlet groove 14 is preferably formed from a portion of the protrusion to the lower frame.

Speaker unit 10 mounted to the earphone of the present invention forms an inlet groove for air circulation on the inner surface of the frame. Accordingly, the micro speaker unit provides a structure capable of forming a flow path for air circulation. In addition, as shown in FIG. 5, a circulation groove 19 for internal air circulation may be additionally formed in addition to the inflow groove. The circulation grooves 19 may be formed at both sides of the inflow grooves 14 and the inflow grooves, respectively, preferably in the circulation grooves 19.

The circulation groove 19 may be formed in plural so as to circulate air between the diaphragm 12 and the magnet 18 to improve sound characteristics. The circulation groove 19 functions to expand the air circulation path of the space to make the air circulation more smooth. In order to more easily form the circulation groove 19, the frame 26 may be separately formed into upper and lower frames, respectively. At this time, the inlet groove 14 and the circulation groove 19 is formed on the inner surface of the upper frame, the inlet groove 14 is formed only in the lower frame, the upper surface of the lower frame is the lower surface of the circulation groove 19 To form a circulation groove (19). In this way, if the upper and lower frames are formed, the undercut injection process for forming the circulation groove can be avoided, and the frame inner surface structure can be easily formed.

In the speaker unit 10, air may flow in (or outflow) from the lower portion of the frame to the protrusion along the inflow groove formed in the frame, so that the air is circulated from the outside to smoothly ensure vibration of the diaphragm. It is possible to improve the characteristics. In addition, although the lead wire of the voice coil arranged in the lower part of the diaphragm is conventionally attached to the diaphragm with the side of the diaphragm, the lead wire is pulled out, and the lead wire is pulled out of the frame and connected to the lower substrate. The wire may be connected to the lower substrate through the inlet groove formed therein.

As a result, wires are attached to the diaphragm to prevent imbalance of vibration characteristics due to differences in weight. In other words, the vibration of the diaphragm can be made uniformly up and down, thereby providing a good sound quality.

delete

7 is a cross-sectional view illustrating a state in which the speaker unit 10 described above is coupled to the housing 20. In FIG. 7, the speaker unit 10 is inserted into and fixed to the front side of the housing 20 so that the grill 13 is located at the foremost side of the earphone. The inlet groove 14 of the speaker unit 10 serves as a passage through which air is introduced or discharged from the air circulation space 23 formed at the rear of the housing. The arrow of FIG. 7 shows such an air circulation path.

The air circulation space 23 is formed by a rear cap 40 coupled to the rear of the housing. The rear part of the housing 20 is open for assembly so that the signal line 60 can be inserted from the outside and connected to the speaker unit 10, and the rear cap 40 is configured to seal the rear part of the housing 20. It is formed to fit fit with the rear portion of the housing. In addition, the rear cap 40 serves as a guide so that the signal line 60 is inserted from one side to be introduced into the housing.

The air circulation space 23 has a sealed structure due to the combination of the housing 20 and the rear cap 40, and is formed to a size that the sound from the speaker unit 10 can be resonant. Preferably, it is formed with a space above the space of the front part (part into which the speaker unit is inserted) of the housing. The inlet groove 14 of the speaker unit 10 functions as a passage for inflowing or outflowing air from the air circulation space 23 at the rear of the housing, whereby sound from the diaphragm is larger in the rear of the housing. Resonant resonances at to obtain sufficient clear sound characteristics. In addition, as the air in the air circulation space 23 flows into the speaker unit 10, smooth vibration of the diaphragm is possible, and the vibration characteristics are not deteriorated even if the size of the speaker unit is reduced. In addition, the air circulation space is sealed to the outside, thereby preventing external noise from entering the speaker unit. By such external noise blocking, excellent sound characteristics without noise interference can be obtained.

Silicone cap

The silicon cap 30 is formed to be elastically inserted into the inlet of the ear canal 5. The silicon cap 30 includes an outer cover 31 that forms a curvature on the outer circumference toward the rear side and spun regions, and an insertion portion 32 formed to contact the front outer peripheral surface of the housing 20. .

The insertion portion 32 of the silicon cap 30 penetrates along the cross-sectional shape of the housing 20, and a stepped portion 33 having a wide diameter is formed behind the insertion portion, that is, the rear side of the housing. This step portion 33 is pressed while contacting the outer peripheral surface of the front portion of the housing 20, the insertion portion 32 is positioned in front of the grill 13 of the speaker unit 10. Therefore, the grill 13 of the speaker unit 10 is exposed through the central through portion of the silicon cap 30.

Forming the step as described above is to prevent excessively pushed in when the silicon cap 30 is inserted, this structure allows the replacement of the silicon cap 30. The silicon cap 30 may be formed in various sizes according to the size of the user's inlet of the ear canal, and the user may replace and use it.

guide

The outer surface of the housing 20 is formed along the circumferential surface of the groove 21 to distinguish the front and rear side in the middle portion. This is formed to define the alignment position of the speaker unit 10. In addition, the engaging projection 22 protruding outward adjacent to the groove is formed along the circumferential surface.

Coupling protrusion 22 is for coupling the guide 50 of FIG. The guide 50 is formed in the guide 50 in a ring shape so that the coupling protrusion 22 can be inserted therein. The guide 50 includes a handle 52 formed to protrude to the rear side in the central axis direction, that is, the vertical direction of the guide inserting portion 51. The handle 52 of the guide 50 forms a structure that protrudes up and down so that a user can easily grab the outer surface of the housing 20. The guide 50 coupled to the outside of the housing allows the user to easily attach and detach the small ear canal insert earphone into the ear.

8 is a view showing a state in which the ear canal insert earphone of the present invention is coupled to the ear. As shown in FIG. 8, the user may insert and use the ear canal insert earphone 1 according to the present invention at the inlet side of the ear canal 5.

The ear canal insert earphone of the present invention can enhance the coupling force with the ear compared to the earphone used in the outside of the ear canal by inserting the earphone front part into the ear canal of the ear, thereby providing an effect that is not easily detached even during use.

In addition, the speaker unit used in the earphone of the present invention can reduce the size of the speaker unit by forming an inlet groove for air circulation to the outside on the inner surface of the frame, whereby the speaker unit is located on the front side of the earphone It becomes possible. The loudspeaker unit can be located closer to the ear tympanum by the front side, and the sound transmission path can be shortened to prevent loss in sound transmission.

In addition, the speaker unit is located at the front side, so that the user can hear louder with less power, so that the user can obtain the same or better sound reproducing effect, and the sound transmission path is shortened, thereby preventing bass loss during the delivery process. We can improve bass characteristic.

In addition, the present invention can facilitate the vibration of the diaphragm of the speaker unit through the air circulation space of the inlet groove and the rear of the housing unit, so that the sound from the speaker unit can be resonated in the air circulation space The bass characteristics superior to the conventional one can be obtained.

In addition, the present invention provides an effect that can be attached and detached more easily when using a small earphone by combining a guide formed with a handle on the outside of the earphone housing.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (8)

A speaker unit configured to convert electrical signals from the outside into voice signals; A housing in which the speaker unit is mounted at the front and an air circulation space is formed at the rear to achieve an air circulation with the speaker unit; A rear cap coupled to the rear side to seal the housing and inserting a signal line receiving a signal from the outside to guide the signal line to the speaker unit of the housing; And Surrounding the housing of the outside of the speaker unit, the ear canal of the ear is formed to be elastically inserted into the inlet, penetrates inside, a stepped portion of a diameter larger than the diameter of the front side is formed on the rear side, the speaker to the inner front side A silicon cap formed to expose the front surface of the unit; Ear canal insert earphone comprising a. The method of claim 1, wherein the speaker unit tympanum; A magnet arranged in a lower portion of the diaphragm and formed in a ring shape; A frame in which the diaphragm and the magnet are mounted, and at least one inlet groove is formed on an inner side of the diaphragm to allow the outside air to flow along the side of the magnet; A substrate arranged under the magnet and receiving electrical signals from the outside; A voice coil arranged at a lower portion of the diaphragm and a central portion of the magnet and electrically connected to the substrate; And A grill arranged at an upper portion of the diaphragm, mounted in an upper opening of the frame, and having a plurality of through holes formed to transmit sound generated from the diaphragm to the outside; Ear canal insert earphone, characterized in that it comprises a. 3. The ear canal insert earphone according to claim 2, wherein the diaphragm is a biaxially stretched polyethylene naphthalate (PEN) film formed to a thickness of 4.2 to 6 [mu] m. The ear canal insert earphone according to claim 2, wherein the frame is formed of upper and lower frames that can be fitted to each other, and the inflow grooves are formed in upper and lower frames, respectively. The method of claim 2, wherein the frame, Ear canal insert earphone characterized in that at least one circulation groove is formed along the side of the magnet from the magnet and the diaphragm to circulate the air located between the diaphragm and the magnet. delete 3. The housing of claim 2, wherein the housing has a cylindrical shape with openings at the front and rear sides, and the frame of the speaker unit is fitted at the front, and the sound from the speaker unit is formed in the air at the rear of the speaker unit. Ear canal insert earphone, characterized in that the space is formed more than the speaker unit insertion space to resonate. The method of claim 1, The housing has a coupling protrusion protruding along the circumferential surface to the outside, An ear canal insert earphone further comprising a guide including a ring-shaped guide inserting groove formed inwardly so that the coupling protrusion is inserted and a guide frame protruding rearwardly in a vertical direction with the inserting portion to form a handle.

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