KR101724154B1

KR101724154B1 - Earphone system with a built-in double sound unit that can turn up sound balance

Info

Publication number: KR101724154B1
Application number: KR1020160038841A
Authority: KR
Inventors: 채성수
Original assignee: 채성수
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-04-06

Abstract

The present invention relates to an earphone system with two-unit sound balance. In an earphone, the earphone system comprises: a casing having a hollow structure having a snail-like shape with an opened rear face, and including an upper end portion in which a cable is drawn and an upper stepped surface and a lower stepped surface formed on an inner wall thereof; a cover coupled to a rear surface of the casing; an inner double casing having a first tubular body having a first stepped surface formed on an inner circumference thereof and a lower outer circumference mounted on the upper stepped surface, and a second tubular body integrally formed with the lower outer circumference of the first tubular body, having a second stepped surface formed on an inner circumference thereof, and a lower outer circumference mounted on the lower stepped surface; a base output part inserted into the first tubular body such that a lower end portion thereof is mounted on the first stepped surface; a medium/high tone output part inserted into the second tubular body such that a lower end portion thereof is mounted on the second stepped surface; an acoustic discharge portion protruding so as to pass through one side of the front surface of the casing. Even when conventional casing and cover are used, the earphone system of the present invention can improve the output of the low tone and the medium/high tone.

Description

[0001] The present invention relates to a two-unit sound balance earphone system,

The present invention relates to a two-unit sound balance earphone system capable of optimizing balance between low and high frequencies.

As shown in FIG. 1, a housing having a driver unit including a diaphragm that vibrates when a signal is input, a speaker unit (not shown) An acoustic tube which is protruded in a direction away from the center of the front portion of the housing at the front portion of the housing and a member having elasticity so as to be deformed and closely fitted to the shape of the ear canal at the front end portion of the acoustic tube And an ear piece for holding the housing on the auricle, wherein when the ear piece is mounted on the ear canal, the housing does not contact at least the distal end of the ear.

Such a conventional technique can increase the size of the diaphragm housed in the housing by providing a large width of the housing, thereby providing a high-quality sound with effective bass. On the other hand, in order to realize the effect, There is a fundamental problem that it is not possible to apply to a general type of housing as well as an excessive cost.

In addition, Korean Patent No. 1519201 (filed on May 5, 2015, entitled "Earphone with Acoustic Tuning Mechanism"), as shown in FIG. 2, has an earphone having a body portion An earphone housing, said body portion being acoustically coupled to a tube portion extending from said body portion, said body portion having an acoustic output opening (" acoustic output opening; And an acoustic tuning member located within the body portion for acoustically coupling the driver to the tube portion, wherein the acoustic tuning member comprises: (a) the acoustic tuning member comprises a back volume chamber for the actuator said sound output port being formed through a wall of said acoustic tuning member, and (b) an acoustic groove formed in the acoustic groove to define an acoustic groove, ) Is formed along a rear surface of the acoustic tuning member (10) facing the inner surface of the body portion, the acoustic groove mating with a housing groove formed along an inner surface of the body portion Wherein the earphone is acoustically coupled.

This prior art teaches that when the acoustic tuning element 510 occupies a large area behind the driver 302, the open ear gain increases in frequency and occupies a small area (i.e., the air volume in the back volume chamber increases , The open ear gain is claimed to have a decreasing effect on the frequency, while it is a natural effect due to the design change and there is a fundamental problem that can not solve the sound distortion of the bass and the middle tone.

An object of the present invention is to provide a two-unit sound balance earphone system capable of optimizing a balance between a low sound and a high sound.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an earphone which has a snail-like hollow structure having a back surface opened, a casing in which a cable is drawn into an upper end portion, and an upper stepped surface and a lower stepped surface are formed on the inner wall; A cover coupled to a back surface of the casing; A first tube body having a first stage main surface formed on its inner periphery and having a lower end outer periphery attached to the upper stepped surface and a second stepped surface formed integrally with a lower end outer periphery of the first tube body, An inner double casing having a lower end outer periphery and a lower end outer periphery; A base output unit inserted into the first tubular body such that a lower end of the first tubular body is mounted on the first stepped surface; A second sound output unit inserted into the second body such that a lower end of the second sound source is mounted on the second step surface; A ring member body made of a metal and having an acoustic ejection opening protruding from one side of a front surface of the casing, the ring member body being interposed between a lower end of the base output portion and the first stepped surface and having a plurality of through- And a ring member having an anti-vibration member inserted into the through-hole, wherein the anti-vibration member has a tubular portion made of a silicon material and a sponge member inserted into the tubular portion, .

Preferably, the acoustical ejection orifice of the present invention is located at a lower portion of the second tubular body, the center of the inner diameter of the acoustical ejection port is arranged on the same line as the first virtual line passing through the inner diameter center of the second tubular body, The second imaginary line passing through the center of the inner diameter of the tube is parallel to the first imaginary line and the elevation step height h0 between the upper end of the first tube and the upper end of the second tube is 0.4H ('H' ) Or more and 0.6 H ('H': first tube height).

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Preferably, a ring spacer made of a paper material interposed between a lower end of the base output portion of the present invention and the upper surface of the ring member is further provided, and the first ring spacer is interposed between the lower surface of the ring member and the first step surface. And a second ring spacer made of a paper material.

Preferably, the apparatus further comprises a plurality of buffer members provided on the inner circumference of the first tube of the present invention, wherein the buffer member comprises: a plurality of insertion grooves spaced apart in the longitudinal direction of the inner circumference of the first tube; And a buffer piece having a half body silicon body inserted into the insertion groove to be in close contact with the outer periphery of the base output part and a sponge piece attached to the front surface of the silicon body.

As described above, the present invention has the effect of improving the output of bass and middle sounds even when the conventional casing and the cover are used.

1 is a block diagram of an earphone device according to an embodiment of the present invention;
2 is a schematic diagram showing an earphone having an acoustic tuning mechanism according to another embodiment of the prior art.
3 is a perspective view showing a two-unit sound balance earphone system according to the present invention.
4 is an enlarged sectional view taken along line 4-4 of FIG.
5 is an exploded perspective view showing a coupling relationship between the internal double casing and the output units according to the present invention.
6 is an enlarged sectional view taken along line 6-6 of FIG.
FIG. 7 is a graph of a Hertz-decibel correlation of an earphone tuned by the present embodiment and an earphone according to the prior art.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

3 to 6, a two-unit sound balance earphone system 100 according to the present invention includes a casing 10, a cover 20, an acoustic ejection opening 40, an internal double casing 50, A ring member 60, ring spacers 71 and 73 and a cushioning member 80. The cushioning member 80 is made up of a cushioning material BP,

The casing 10 is made of a synthetic resin or a non-metallic material, and has a snail-like hollow structure with its back surface opened, and a cable CBL is led into an upper end thereof.

In the casing 10, an upper stepped surface 11 and a lower stepped surface 13 are formed on the inner wall.

The cover (20) is coupled to the back surface of the casing (10). Here, the cover 20 is made of synthetic resin or a non-metallic material.

The inner double casing 50 includes a first tubular body 51 having a first stepped surface 51a formed on its inner periphery and a second tubular body 51 formed integrally with the outer peripheral edge of the lower end of the first tubular body 51, And a second tube body 53 on which the first tube body 53a is formed.

The first tubular body 51 and the second tubular body 53 may have the same inner diameter and height, respectively.

The outer peripheral edge of the lower end of the first tubular body 51 is fixed to the upper step surface 11 of the casing 10 and the outer peripheral edge of the lower end of the second tubular body 53 is fixed to the lower step surface 13 of the casing 10, .

The base output unit BP is composed of a speaker and a head for outputting a low sound, but these components are similar to those of known components, and a detailed description thereof will be omitted. Here, the base output portion BP is inserted into the first step surface 51a of the first tube body 51 so that the lower end thereof is stationary.

The middle tone output unit HP is composed of a speaker and a head for outputting middle and high tones. However, these components are similar to known components, and a detailed description thereof will be omitted. Here, the middle tone output unit HP is inserted into the second stepped surface 53a of the second tubular body 53 so that the lower end thereof is stationary.

The acoustic ejection openings 40 are formed so as to protrude through one side of the front surface of the casing 10. The sound ejecting opening 40 of the present embodiment may be a portion inserted into the ear canal of a user and may be equipped with a silicone cap to relieve pain upon insertion.

More specifically, the center of the inner diameter of the second tube 53 and the center of the inner diameter of the sound ejecting opening 40 are located on the same first imaginary line L1 (L1) As shown in Fig. The second imaginary line L2 passing through the center of the inner diameter of the first tube 51 (or the center of the base output BP) is parallel to the first imaginary line L1.

Therefore, unnecessary noise is reduced as the low-frequency sound output from the base output unit BP strikes the bottom surface of the casing 10 and harmonized with the high-frequency sound output from the high-frequency sound output unit HP inserted into the second tube 53 And can be discharged to the sound discharge opening 40 without distortion or loss of sound.

The step height h0 and the height H of the first tube body 51 have the relationship expressed by the following equation (1). Here, the step height h0 means the height difference between the upper end of the first tube body 51 and the upper end of the second tube body 53 (see Fig. 4).

The center of the inner diameter of the second tube 53 and the center of the inner diameter of the sound ejecting opening 40 are not located on the same line on the first imaginary line L1 and are not less than 0.65H , The internal double casing 50 can not be housed in the casing 10 and the cover 20 or is difficult.

The ring member 60 is interposed between the lower end of the base output portion BP and the first step face 51a of the first tube body 51. [ Here, the ring member 60 is made of copper, aluminum or stainless steel and has a ring member body 61 having a plurality of through holes 61h formed along the periphery thereof, a vibration member (not shown) inserted into the through hole 61h 63).

The through holes 61h are through holes formed in the upper surface and the lower surface of the ring member body 61, respectively, and inserted into the respective anti-vibration members 63 at the steps formed on the upper and lower surfaces. The anti-vibration member 63 is composed of a silicon-made tubular portion 63a and a sponge member 63b inserted into the tubular portion 63a.

The first ring spacer 71 is a ring member of paper interposed between the lower end of the base output portion BP and the upper surface of the ring member 60.

The second ring spacer 73 is a ring member made of paper interposed between the lower surface of the ring member 60 and the first step surface 51a of the first tube body 51.

Here, the first ring spacer 71 is provided to directly contact the ring member 60 made of a metal and the base output BP so as to prevent sound from being distorted, and the second ring spacer 73 Is provided to prevent mechanical friction generated between the lower surface of the ring member (60) and the first step surface (31a) of the first tube body (31).

It is also preferable that the first and second ring spacers 71 and 73 form a polyethylene coating film on the surface.

The buffer member 80 includes a plurality of insertion grooves 81 spaced apart from each other in the longitudinal direction (or height direction) of the inner peripheral edge of the first tubular body 31, 81 which is inserted into the cushion 83.

The cushion 83 is composed of a half body silicon body 83b and a sponge piece 83a attached to the front surface of the silicon body 83b. The cushioning piece 83 is provided to prevent vibration generated during the operation of the base output part BP, so that the noise generated in the bass can be blocked through the cushioning piece 83.

The power is directly supplied to the head of the base output BP and the head of the middle tone output unit HP through the cable CBL in the present embodiment, Circuit, a Bluetooth module, or any other circuit / module capable of performing various functions.

As shown in FIG. 7, the two-unit sound balance earphone system 100 (solid line display) of the present embodiment is configured such that the output (sound) of 20 Hz to 500 Hz in the low frequency region , And it was confirmed that the output was improved even in the range of 1 kHz to 20 kHz, which is the middle tone range.

Accordingly, when the configuration of the present embodiment is applied to an earphone having a standard size of the casing 10 and the cover 20, it is possible to prevent distortion and loss of sound and to improve the output of bass and middle sounds.

Here, the graph of FIG. 7 is a graph showing the results when the two-unit sound balance earphone system of the present embodiment and the earphone of the related art use both a casing and a cover of the same size.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10: casing 11, 13:
20: cover
40: sound outlet
50: inner double casing 51, 53: tubular body
60: ring member
80: buffer member
100: 2-unit sound balance earphone system

Claims

In the earphone,
A casing in which a cable is drawn into an upper end portion of the hollow structure having a snail-like shape with its back surface being opened, and an upper stepped surface and a lower stepped surface are formed on the inner wall;
A cover coupled to a back surface of the casing;
A first tube body having a first stage main surface formed on its inner periphery and having a lower end outer periphery attached to the upper stepped surface and a second stepped surface formed integrally with a lower end outer periphery of the first tube body, An inner double casing having a lower end outer periphery and a lower end outer periphery;
A base output unit inserted into the first tubular body such that a lower end of the first tubular body is mounted on the first stepped surface;
A second sound output unit inserted into the second body such that a lower end of the second sound source is mounted on the second step surface;
And an acoustic ejection opening protruding from one side of a front surface of the casing,
Further comprising a ring member having a ring member body disposed between the lower end of the base output section and the first step difference surface and having a plurality of through holes formed along the periphery thereof and a vibration preventing member inserted into the through hole,
Wherein the anti-vibration member has a tubular portion made of silicon and a sponge member inserted into the tubular portion.

The method according to claim 1,
Wherein the acoustic discharge port is located at a lower portion of the second tube body and the inner diameter center of the acoustic discharge port is disposed on the same line as the first virtual line passing through the inner diameter center of the second tube body,
The second virtual line passing through the center of the inner diameter of the first tube and the first virtual line are parallel,
Wherein a height step (h0) between the upper end of the first tube and the upper end of the second tube is equal to or greater than 0.4H ('H': first tube height) and 0.6H ('H': first tube height) Two-unit sound balance earphone system.

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The method according to claim 1,
And a first ring spacer made of a paper material interposed between a lower end of the base output portion and an upper surface of the ring member,
And a second ring spacer made of a paper material interposed between the lower surface of the ring member and the first stepped surface.

The method according to claim 1,
Further comprising a plurality of buffer members provided on an inner circumference of the first tube body,
The buffer member includes a plurality of insertion grooves spaced apart in the longitudinal direction of the inner circumference of the first tube; And a buffer piece having a half body silicon body inserted into the insertion groove to be in close contact with an outer periphery of the base output unit and a sponge piece attached to a front surface of the silicon body.