KR101875670B1 - Earphone - Google Patents

Abstract

A housing for mounting the driver unit to form a driver unit and an electric field unit for easily removing foreign substances generated in the nozzle unit of the earphone and easily adjusting the acoustic characteristics, an opening hole provided at one end of the housing, And a nozzle cap provided on the nozzle cap and shielding the opening hole, wherein the nozzle cap has a second peak region of the frequency-output graph, The output of the fourth peak region is increased or the bandwidth is extended.

Description

Earphone {EARPHONE}

The present invention relates to an earphone in which a nozzle cap for covering a nozzle portion is detachable.

The earphone with the nozzle part forms an opening hole at one end of the nozzle part. The opening hole of the nozzle portion is connected to the earphone full-mount portion for mounting the driver unit, and becomes an outlet for outputting sound.

Generally, a mesh is provided in the opening hole of the nozzle portion.

The mesh can prevent the foreign matter from flowing into the earphone, and can also affect the acoustic characteristics of the earphone by controlling the sound pressure acting on the earphone.

When the mesh is integrally connected to the nozzle portion, cleaning for removing accumulated foreign matter is not easy, and further, it may generate noise which is not intended for the acoustic characteristic.

Therefore, in consideration of this problem, the structure of the inlet region of the nozzle portion including the mesh can be replaced.

In the case where the mesh is provided in an interchangeable form, there is a possibility to change the acoustic characteristics by adjusting the sound pressure since it is possible to replace the foreign matter with the mesh having different structure and shape as well as the problem of the foreign substance cleaning.

Accordingly, the present invention introduces a mesh replacement type earphone considering the above features.

Specifically, the sound quality and tone color of the audio output through the receiver are roughly determined by the sound source information, and the sound source signal is electronically deformed by the physical tendency of the receiver outputting the sound source, the audio tuner provided in the receiver, So that the sound quality and tone can be changed. Here, the receiver may include a device for outputting sound such as an earphone or the like.

Regarding the physical tendency of the earphone, the degree of output of a specific band of the output audio can be a factor in the aeration amount of the receiver.

That is, in the housing of the earphone in which the driver unit is mounted, the amount of air entering and exiting the inside of the housing can control the output of a specific range of audio.

Particularly, in order to adjust the output of the low-frequency sound of the earphone, the amount of air communication through the hole of the housing in the rear direction of the driver unit can be made different.

The amount of air supplied by the holes of the housing in the rear direction of the driver unit may be a variable in the distance from the rear surface of the driver unit to the housing hole.

One way to adjust these variables is to adjust the position of the driver unit to vary the distance of the holes formed in the housing. However, since the shape and size of the housing are also limited, it is not possible to position the hole indefinitely away from the driver unit.

Therefore, an earphone structure is required to maximize the distance between the hole and the driver unit in the inner space of the limited earphone housing to adjust the aeration amount.

Also, an earphone structure is required to adjust the output of a specific frequency band by controlling the amount of airflow through other methods.

It is an object of the present invention to easily remove foreign substances generated in the nozzle part of the earphone and to easily adjust the acoustic characteristics.

According to an aspect of the present invention, there is provided an electronic apparatus including a driver unit, a housing for mounting the driver unit by forming an electric field unit, a nozzle unit provided at one end of the housing, A nozzle cap detachably coupled to an outer circumferential surface of the nozzle unit, and a nozzle mesh provided on the nozzle cap to shield the opening hole, the nozzle cap attenuating an output of a second peak region of the frequency- And the output of the fourth peak region is increased or the bandwidth is extended.

According to another aspect of the present invention, the peak region provides an earphone based on a frequency band of 2 kHz to 20 kHz.

According to another aspect of the present invention, there is provided a driver unit including a driver unit, a housing for mounting the driver unit, a nozzle unit provided at one end of the housing to form an opening hole extending from the electric unit, Wherein the nozzle cap includes a replaceable first nozzle cap, a second nozzle cap, and a third nozzle cap, wherein the nozzle cap includes a detachable nozzle cap and a nozzle mesh provided on the nozzle cap to shield the opening hole, To provide an earphone.

According to another aspect of the present invention, when the first nozzle cap is coupled, a base acoustic characteristic is obtained, when the second nozzle cap is coupled, a normal acoustic characteristic is obtained, and when the third nozzle cap is coupled, And outputting the earphone.

According to another aspect of the present invention, the output value corresponding to 1 kHz in the frequency-output graph of the earphone is R, the output value area of R or more in the range of 100 Hz to 1 kHz is A, The value of B / (A + B) when the first nozzle cap is combined is less than 0.35, and the value of B / (A + B) when the second nozzle cap is combined is 0.35 Or more and 0.65 or less, and a value of B / (A + B) when the third nozzle cap is coupled is greater than 0.65.

According to another aspect of the present invention, when the first nozzle cap is coupled, there is a frequency band that is 3 dB or more higher than a frequency band of 2 kHz or more and 6 kHz or less when the second nozzle cap is coupled, The second nozzle cap has a frequency band that is reduced by 3 dB or more from a frequency band of 2 kHz to 6 kHz than when the second nozzle cap is coupled.

According to another aspect of the present invention, there is provided a driver unit including a driver unit, a housing for mounting the driver unit, a nozzle unit provided at one end of the housing to form an opening hole extending from the electric unit, And a hook portion provided on an outer circumferential surface of the nozzle portion and an inner circumferential surface of the nozzle cap. The nozzle cap includes a nozzle cap detachably coupled to the nozzle cap, a nozzle mesh provided on the nozzle cap to shield the opening hole,

According to another aspect of the present invention, the hook portion includes a protruding end formed along the circumference of the outer circumferential surface of the nozzle portion or the inner circumferential surface of the nozzle cap, and a protrusion formed along the circumference of the other of the nozzle portion outer circumferential surface or the inner circumferential surface of the nozzle cap. And a recessed portion provided corresponding to the protruding end.

According to another aspect of the present invention, the outer diameter of the nozzle cap is larger by a predetermined value than the outer diameter of the first nozzle region adjacent to the nozzle cap.

According to another aspect of the present invention, the outer diameter of the nozzle cap is the same as the outer diameter of the second region of the nozzle portion spaced apart from the nozzle cap, and the earphone is formed of the nozzle cap, The earphone further includes an ear tip which is wrapped and joined.

According to another aspect of the present invention, there is provided an earphone, wherein the nozzle cap includes ABS resin and the nozzle cap is insert-injected into the nozzle mesh.

According to another aspect of the present invention, the nozzle cap includes an opening for exposing the nozzle mesh to the outside, and the diameter of the opening and the inner diameter of the nozzle are the same.

According to another aspect of the present invention, there is provided an earphone further comprising a nozzle cap and an eartip for wrapping and coupling the nozzle, wherein the eartip surrounds a region of the upper surface of the nozzle cap.

According to another aspect of the present invention, the nozzle cap and the ear tip each include an opening for exposing the nozzle mesh to the outside, and the opening of the nozzle cap and the diameter of the opening of the ear tip are the same. to provide.

According to another aspect of the present invention, there is provided a driver unit including a driver unit, a housing for mounting the driver unit, a nozzle unit provided at one end of the housing to form an opening hole extending from the electric unit, And a bending portion extending from the nozzle cap and bent toward an inner circumferential surface of the nozzle cap. The bending portion is mounted on a depression formed on an outer circumferential surface of the nozzle portion And provides an earphone.

According to another aspect of the present invention, there is provided an earphone, wherein the nozzle cap includes SUS.

According to another aspect of the present invention, there is provided a driver unit including a driver unit, a housing for mounting the driver unit, a nozzle unit provided at one end of the housing to form an opening hole extending from the electric unit, And a nozzle mesh provided on the nozzle cap for shielding the opening hole, wherein the nozzle cap is screwed to the nozzle unit.

According to another aspect of the present invention, there is provided a driver unit including a driver unit, a housing for mounting the driver unit, a nozzle unit provided at one end of the housing to form an opening hole extending from the electric unit, And a nozzle mesh provided on the nozzle cap for shielding the opening hole, wherein the nozzle mesh includes a first nozzle mesh and a second nozzle mesh overlapped with the first nozzle mesh, Wherein the earphone is an earphone.

According to another aspect of the present invention, the second nozzle mesh is laminated on the upper surface of the first nozzle mesh, and the first nozzle mesh is provided in a part of a first region formed by the second nozzle mesh And an earphone.

According to another aspect of the present invention, there is further provided an auxiliary nozzle mesh provided in an opening hole of the nozzle portion, wherein the nozzle cap is rotatably coupled to an outer circumferential surface of the nozzle portion, And a ventilation amount due to overlapping of the auxiliary nozzle mesh is varied.

According to another aspect of the present invention, the auxiliary nozzle mesh forms a plurality of parallel stripe-shaped ventilation holes, the nozzle mesh overlaps with the plurality of ventilation holes at a first angle of the nozzle cap, And a plurality of vent holes formed perpendicularly to the plurality of parallel ventilation holes at an angle.

The effect of the earphone according to the present invention is as follows.

According to at least one of the embodiments of the present invention, it is possible to easily remove foreign matters accumulating in the nozzle cap or nozzle mesh.

In addition, according to at least one of the embodiments of the present invention, there is an advantage that the nozzle cap can be easily attached and detached from the nozzle portion.

In addition, according to at least one of the embodiments of the present invention, there is an advantage that the shape of the nozzle portion passage is not affected regardless of attachment / detachment of the nozzle cap.

Also, according to at least one of the embodiments of the present invention, there is an advantage that the acoustic characteristics can be influenced by the nozzle cap.

In addition, according to at least one of the embodiments of the present invention, there is an advantage that the acoustic characteristics can be variably changed through the replacement of another kind of nozzle cap.

In addition, according to at least one of the embodiments of the present invention, base, normal, and treble acoustic characteristics can be realized by replacing the nozzle cap.

In addition, according to at least one of the embodiments of the present invention, it is possible to minimize the occurrence of unintended acoustic characteristics despite the detachable nozzle cap.

Also, according to at least one of the embodiments of the present invention, there is an advantage that the output of each frequency band of low, middle, and high frequencies can be independently controlled.

In addition, according to at least one of the embodiments of the present invention, there is an advantage that the degree of output that can not be realized by the conventional nozzle mesh can be controlled.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiment of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art. .

1 is a perspective view of an earphone according to the present invention.
2 is an exploded perspective view of an earphone according to the present invention.
3 is a schematic cross-sectional view of a driver unit of an earphone according to the present invention.
4 is a perspective view of the earphone before and after the nozzle cap engagement according to the present invention.
5 is a partial cross-sectional perspective view of an earphone according to the present invention.
6 is a cross-sectional view of the earphone of FIG.
7 is a rear perspective view of a nozzle cap and nozzle mesh in accordance with the present invention.
8 is a partial cross-sectional perspective view of an earphone of another embodiment related to the present invention.
9 is a partial cross-sectional perspective view of an earphone of another embodiment related to the present invention.
10 is a graph of acoustic characteristics for an earphone of the present invention.
11 is a graph of frequency characteristics relating to characteristics of a nozzle mesh according to the present invention.
12 is a graph of acoustic characteristics of a nozzle cap and a nozzle mesh according to the present invention.
13 shows an algorithm for determining the acoustic characteristics of the nozzle cap and the nozzle mesh according to the present invention.
14 shows another embodiment of the nozzle mesh of an earphone according to the present invention.
Fig. 15 shows another embodiment of the nozzle mesh of an earphone according to the present invention.
16 shows another embodiment of the nozzle mesh of an earphone according to the present invention.
17 (a) to 17 (c) are graphs showing the aeration amount and the sound field characteristics of the earphone according to the present invention.
18 is a partially exploded perspective view of an earphone according to the present invention.
19 is a partially exploded perspective view of an earphone according to the present invention.
20 is a front view of the inner side of the inner case and the inner side of the outer case.
Fig. 21 (a) is a rear perspective view of the rotating portion, and Fig. 21 (b) is a front perspective view of the housing.
22 is a longitudinal sectional view of the earphone.
Fig. 23 is a rear view of the earphone showing some states with different degrees of rotation of the rotating part. Fig.
Fig. 24 shows a rear view of a driver unit associated with the present invention. Fig.
25 shows a rear view of a driver unit associated with the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The earphone with the nozzle part forms an opening hole at one end of the nozzle part. The opening hole of the nozzle portion is connected to the earphone full-mount portion for mounting the driver unit, and becomes an outlet for outputting sound.

Generally, a mesh is provided in the opening hole of the nozzle portion.

The mesh can prevent the foreign matter from flowing into the earphone, and can also affect the acoustic characteristics of the earphone by controlling the sound pressure acting on the earphone.

When the mesh is integrally connected to the nozzle portion, cleaning for removing accumulated foreign matter is not easy, and further, it may generate noise which is not intended for the acoustic characteristic.

Therefore, in consideration of this problem, the structure of the inlet region of the nozzle portion including the mesh can be replaced.

In the case where the mesh is provided in an interchangeable form, there is a possibility to change the acoustic characteristics by adjusting the sound pressure since it is possible to replace the foreign matter with the mesh having different structure and shape as well as the problem of the foreign substance cleaning.

Accordingly, the present invention introduces a mesh replacement type earphone considering the above features.

Fig. 1 is a perspective view of an earphone 10 according to the present invention, and Fig. 2 is an exploded perspective view of an earphone 10 related to the present invention. For convenience of explanation, FIG. 1 and FIG. 2 will be referred to at the same time.

The earphone 10 may be roughly divided into a driver unit 200 and a housing 100 on which the driver unit 200 is mounted.

The driver unit 200 receives the sound source signal and vibrates the diaphragm 210 to generate sound.

The housing 100 forms an outer surface of the earphone 10 to form a full-length portion for mounting the driver unit 200. The main board formed by the housing 100 may also be provided with a main board for mounting an electronic component for driving the driver unit 200.

A tip (101) is coupled to one end of the housing (100) to help seat the user's ear, and external noise can be minimized.

A cable 102 for transmitting / receiving signals from an external device to the wired line may be connected.

The nozzle unit 110 may be formed at one end of the housing 100. The nozzle unit 110 forms a passage 112 through which the sound generated from the driver unit 200 is output. An opening hole formed in one end of the nozzle unit 110 is connected to the former through the passage 112 of the nozzle unit 110.

The nozzle mesh 121 and the nozzle cap 120 may be provided in the opening hole and the passage 112 of the nozzle unit 110 of the earphone 10.

The nozzle mesh 121 and the nozzle cap 120 affect the acoustic characteristics of the earphone 10 by adjusting the air volume of the earphone 10, that is, the sound pressure. Details of this will be described later.

The nozzle mesh 121 refers to a specific form in which the aforementioned mesh is applied to the present invention.

That is, the nozzle mesh 121 shields the opening hole of the nozzle unit 110 like the above-described mesh to prevent foreign substances from entering into the full length part of the housing 100, and at the same time affects the sound pressure, ). ≪ / RTI >

The nozzle mesh 121 may be detachably attached to the housing 100, particularly, the nozzle unit 110 through the nozzle cap 120, or may be detachably or interchangeably provided.

The nozzle cap 120 can be attached to and detached from the nozzle unit 110 while being coupled to the nozzle mesh 121. If necessary, the nozzle mesh 121 and the cover mesh may be provided in the nozzle cap 120 so as to overlap with each other. The cover mesh prevents external foreign substances from entering the nozzle part 110 passageway 112 and forms a certain rigidity to improve durability. The cover mesh may be provided so as not to affect the acoustic characteristics of the earphone 10 by forming holes having a wider spacing than the nozzle mesh 121. [ Therefore, it is assumed that the explanation of the acoustic characteristics by the mesh described later is not affected by the cover mesh.

Meanwhile, a nozzle filter 111 may be provided in the passage 112 of the nozzle unit 110. The provision of the nozzle filter 111 functions to naturally adjust the slope of the frequency band from 1 kHz to 3 kHz. The nozzle filter 111 may have a urethane foam material.

Hereinafter, the principle of how the acoustic characteristics of the earphone 10 are affected by the airflow amount and the sound pressure will be briefly described.

3 is a schematic cross-sectional view of the driver unit 200 of the earphone 10 according to the present invention.

Regarding the physical tendency of the earphone 10, the degree of output of a specific band of the output audio may act as a variable in the aeration amount of the receiver.

That is, in the housing 100 of the earphone 10 on which the driver unit 200 is mounted, the amount of air entering and exiting the housing 100 can control the output of a specific range of audio.

When the diaphragm 210 of the driver unit 200 is compressed as shown in FIG. 3 (a), the inside of the driver unit 200 is compressed and the air is blown to the outside. As shown in FIG. 3 (b) When the expansion unit 210 is inflated, the inside of the driver unit 200 is inflated and air is introduced from the outside.

Sound is generated through a vibration process in which the diaphragm 210 of Figs. 3 (a) and 3 (b) repeats compression and expansion processes.

As the vibration displacement of the diaphragm 210 increases, the output of a specific frequency band may become larger and the output of a specific frequency band may decrease as the vibration displacement of the diaphragm 210 becomes smaller.

The vibration displacement of the diaphragm 210 can be adjusted in accordance with the amount of air that can flow into and out of the driver unit 200.

In a state in which the amount of air that can flow in and out of the driver unit 200 is large, that is, in a state where the amount of air to be supplied is high, the pressure acting on the driver unit 200 is relatively low so that the vibration displacement of the diaphragm 210 may be large, Can rise.

Conversely, in a state where the amount of air entering and exiting the driver unit 200 is small, that is, in a state where the amount of air to be supplied is low, the pressure acting on the driver unit 200 is relatively high so that the vibration displacement of the diaphragm 210 can not be large, .

4 is a perspective view before and after the coupling of the nozzle cap 120 of the earphone 10 according to the present invention.

The shape of the nozzle mesh 121 and the nozzle cap 120 affects the acoustic characteristics of the earphone 10. Therefore, the passage length and diameter of the nozzle unit 110 also affect the acoustic characteristics, and the design of such features is an important variable for controlling the acoustic characteristics.

In consideration of this characteristic, the nozzle cap 120 of the present invention can be attached to and detached from the outer circumferential surface of the nozzle unit 110. If the nozzle cap 120 is coupled to the inner circumferential surface of the nozzle unit 110, the air is unintentionally disturbed by the manufacturing tolerance or coupling tolerance between the nozzle cap 120 and the nozzle unit 110, Noise can be generated in the sound.

Therefore, the shape of the nozzle cap outer peripheral surface 1101 of the nozzle cap 120 can minimize the occurrence of such unintended noise.

The nozzle cap 120 may be coupled to the nozzle unit 110 in a hook manner or in a screw manner. Details will be given later.

5 is a partial cross-sectional perspective view of an earphone 10 according to the present invention.

Hereinafter, an embodiment will be described in which the nozzle cap 120a is coupled to the nozzle unit 110 in a hook manner.

The hook portion 130 is provided on the outer circumferential surface 1101 of the nozzle portion and the inner circumferential surface 1201 of the nozzle cap, thereby realizing a hook-type coupling.

The hook portion 130 may have a protruding end 131 and a depressed end 132.

The protruding end 131 is formed along the circumference of either the nozzle part outer circumferential surface 1101 or the nozzle cap inner circumferential surface 1201 and the recessed end 132 is formed in the nozzle outer circumferential surface 1101 or the nozzle cap inner circumferential surface 1201 May be formed along one circumference. For example, as shown in FIG. 5, the protruding end 131 may be formed along the circumference of the nozzle outer circumferential surface 1101, and the concave end 132 may be formed along the circumference of the nozzle cap inner circumferential surface 1201. Conversely, the projecting end 131 may be provided on the inner circumferential surface of the nozzle cap 120, and the recessed end 132 may be provided on the outer circumferential surface of the nozzle portion 110.

The projecting end 131 and the recessed end 132 may be provided as a pair as shown in FIG. 5, but may be provided in two or more pairs as the case may be.

The nozzle cap 120a may be coupled to the nozzle unit 110 so as to cover one upper area of the outer circumferential surface of the nozzle unit 110 and the upper end surface of the nozzle unit 110. [

FIG. 6 is a sectional view of the earphone 10 of FIG. 5 in a state where the tip 101 is engaged.

The diameter CI of the opening formed by the nozzle cap 120 is preferably equal to or larger than the diameter NI of the opening of the nozzle unit 110. [ This is for the purpose of preventing noises from being generated due to interference of the sound waves output through the nozzle unit 110 by the nozzle cap 120.

The outer diameter CO of the nozzle cap 120 may be larger than the outer diameter of the first region of the nozzle unit 110 adjacent to the nozzle cap 120 by a predetermined value. In other words, the nozzle cap 120 can be easily peeled off by forming a step in the joint boundary region between the nozzle cap 120 and the nozzle unit 110,

The outer diameter CO of the nozzle cap 120 may be the same as the outer diameter of the second region of the nozzle unit 110. [ That is, the first area of the nozzle unit 110 may have a step to form a groove, but the second area may be formed to be the same as the outer diameter of the nozzle cap 120 so that the eartip 101 contacts the nozzle cap 120, It is possible to engage with the region of the portion 110 as much as possible.

The eartip 101 may be fixed by coupling the nozzle cap 120 and the second region of the nozzle unit 110.

The eartip 101 is formed so as to surround a part of the upper surface of the nozzle cap 120, thereby preventing the nozzle cap 120 from being separated from the nozzle unit 110.

The ear tip 101 is made of an elastic material having a restoring force to be coupled to the nozzle unit 110 and the nozzle cap 120 so as not to be easily detached. That is, the inner diameter of the eartip 101 to which the external force is not applied is formed to be smaller than the outer diameter of the nozzle cap 120 or the outer diameter of the second region of the nozzle portion 110 so that the nozzle portion 110 and the nozzle So that it can be coupled to the cap 120.

In addition, the inner bottom surface area of the eartip 101 is fitted in the third area of the nozzle unit 110, so that the coupling strength between the eartip 101 and the nozzle unit 110 can be further increased.

7 is a rear perspective view of the nozzle cap 120 and the nozzle mesh 121 associated with the present invention.

The nozzle mesh 121 may be provided inside the nozzle cap 120. The outer boundary region 1211 of the nozzle mesh 121 and the inner surface 1202 of the upper end portion of the nozzle cap 120 may overlap to form a coupling region.

Since the diameter of the nozzle mesh 121 is larger than the diameter of the opening of the nozzle cap 120, when the nozzle mesh 121 is coupled to the inside of the nozzle cap 120, So that it is possible to maintain a stable engagement and to prevent the escape from the outside.

The nozzle cap 120 and the nozzle mesh 121 may be bonded together or the nozzle cap 120 may be insert injected into the nozzle mesh 121. In this case, the nozzle cap 120 may be made of a material such as ABS resin.

Since the nozzle cap 120 formed through injection has a high degree of freedom in shape, the protruding end 131 can be provided in the central region of the inner peripheral surface of the nozzle cap 120.

8 is a partial cross-sectional perspective view of an earphone 10 of another embodiment related to the present invention.

The nozzle cap 120b may be formed of a metal material. The bending portion 122 formed by the bending after the injection of the metal in the nozzle cap 120 made of metal can serve as a hook.

The bending portion 122 may be formed in an area around the inner circumferential surface of the nozzle cap 120b. In other words, since the bending portion 122 is formed by bending after the mold injection process, unlike the embodiment of FIGS. 5 to 7, the bending portion 122 is deformed when it is formed with respect to the entire peripheral region, so that it can not have an even shape. Therefore, it can be provided only in one area.

The bending part 122 is seated in a depression 133 formed on the outer circumferential surface of the nozzle part 110 and the inner end of the bending part 122 is hooked on the protruding end 131 protruding from the outer surface of the nozzle part 1101, can do.

The metallic nozzle cap 120b forming the bending portion 122 may include SUS. The metal cap 120 may be bonded to the nozzle mesh 121 by bonding.

Other features not mentioned in the embodiment of Fig. 8 may be applied to the same contents as described in Fig. 5 to Fig. 7, provided that they are not arranged.

9 is a partial cross-sectional perspective view of an earphone 10 of another embodiment related to the present invention.

5 to 8 illustrate an embodiment in which the nozzle cap 120c and the nozzle unit 110 are coupled in a hook manner.

On the other hand, the earphone 10 of the embodiment of Fig. 9 has a feature of a screw-coupling type.

The nozzle cap 120c and the nozzle unit 110 can be fixed by screwing. Particularly, the inner circumferential surface of the nozzle cap 120c and the outer circumferential surface of the nozzle unit 110 may be formed with threads 134 and may be coupled or separated by rotation of the nozzle cap 120c.

The structure and the shape of the inside of the nozzle passage 112 are not affected similarly to the previous embodiments when the screw thread 134 is provided on the inner circumferential surface of the nozzle cap 120c and the outer circumferential surface of the nozzle section 110, The noise that can be generated can be minimized.

The nozzle cap 120c may be formed of a metal material. In particular, the nozzle cap 120c may comprise an aluminum material. The nozzle cap 120 may be fixed to the nozzle mesh 121 through bonding.

Other features may be applied within a range that does not contradict the same as the embodiments of Figs.

In the case where the nozzle cap 120 and the nozzle unit 110 are coupled in a hook manner, the length of the passage 112 of the nozzle can be kept constant compared with the case of coupling by the screw method. In other words, the coupling of the hook type nozzle cap 120 can only be attached or detached and there is no coupling degree. On the other hand, in the case of the screw type, the length of the nozzle passageway 112 depends on how much the nozzle cap 120 is rotated This can lead to unexpected variations in the acoustic properties.

Therefore, the hook type earphone 10 can minimize unexpected variations that may occur in the acoustic characteristics.

However, when the above-described characteristic of the earphone 10 of the screw type is utilized, the length of the nozzle passage 112 can be used as a variation of the acoustic characteristic. In addition, in the case of the screw type, the reliability of the coupling between the nozzle cap 120 and the nozzle unit 110 can be increased in that the unexpected detachability of the nozzle cap 120 is less than that of the hook type.

10 is a graph of acoustic characteristics for the earphone 10 of the present invention.

10 (a) shows an earphone 10 with a hook-type nozzle cap 120 of the present invention engaged, and FIG. 10 (b) shows an earphone 10 without a nozzle cap 120 10 (c) is a result value of acoustic characteristics of each earphone 10 of Figs. 10 (a) and 10 (b).

The length of the nozzle passage 112, that is, the length of the end portion of the ear tip 101 from one end of the output direction of the driver unit 200, in order to clarify the difference in acoustic characteristics due to the presence or absence of the nozzle cap 120 in the earphone 10 Are equal to each other.

(Peak, P1 to P4) occur from a region near the frequency of 1 kHz or 2 kHz regardless of the earphone 10 of Figs. 10 (a) and 10 (b) . For the sake of convenience of explanation, it should be counted in order of the highest point occurring in the right direction starting from the 2 kHz frequency.

As can be seen, in the case of the earphone 10 using the nozzle cap 120, the output at the second peak P2 is reduced to form a relatively gentle curve as compared with the earphone 10 to which the nozzle cap 120 is not applied do. This means that the earphone 10 equipped with the nozzle cap 120 has a stable output form that does not bounce in the middle-to-high range.

Also, looking at the output at the fourth peak P4, both graphs have a relatively lower output than the output of the other regions. Therefore, it is required to maximize the output in the corresponding area. At the fourth highest point P4 of each graph, the earphone 10 to which the nozzle cap 120 is applied has a larger output than the earphone 10 to which the nozzle cap 120 is not applied. This means that it is possible to relatively increase the deficient output in the high frequency range.

In addition, the characteristic of the output at the fourth highest point P4 is characterized in that it is expanded or maintained in a wider frequency band region than the earphone 10 to which the nozzle cap 120 is not applied.

Accordingly, the earphone 10 to which the nozzle cap 120 is applied has an advantage in terms of acoustic characteristics in that the earphone 10 has overall uniform characteristics as compared with the earphone 10.

11 is a frequency characteristic graph relating to the characteristics of the nozzle mesh 121 related to the present invention.

The nozzle mesh 121 can change the sound pressure of the earphone 10 according to the material of the mesh, the thickness of the water, and the density of the mesh. This means that the output characteristics of the earphone 10 can be adjusted.

Particularly, the mesh density of the nozzle mesh 121, that is, the interval between the numbers of the meshes, may have the greatest influence on the acoustic characteristics. The higher the density of the mesh, the higher the sound pressure, which can lower the output of the central frequency band, especially from 20 Hz to 20 kHz. Therefore, the characteristics of such a mesh can be used to tune the acoustic characteristics of the corresponding frequency band.

12 is a graph of acoustic characteristics of the nozzle cap 120 and the nozzle mesh 121 related to the present invention.

May be provided in the form of an earphone 10 package that includes a replaceable nozzle cap 120 that can change the acoustic characteristics through the difference in the physical characteristics of the mesh and the characteristics of the replaceable nozzle cap 120.

For example, the first nozzle cap 120, the second nozzle cap 120, and the third nozzle cap 120, which can be replaced, can be provided in one housing 100 provided with the nozzle unit 110 have. The first nozzle cap 120 to the third nozzle cap 120 may have the nozzle mesh 121 of different specifications based on the characteristics of FIG. 10 to realize earphones 10 having different acoustic characteristics.

11, since the nozzle mesh 121 has the greatest influence on the output of the central frequency band among 20 Hz to 20 kHz, the nozzle mesh 121 applied to each nozzle cap 120 has a frequency of 500 Hz or more, particularly 2 kHz to 6 kHz Lt; RTI ID = 0.0 > of the < / RTI >

For example, the first nozzle cap 120 to the third nozzle cap 120 may each have a nozzle mesh 121 that provides acoustic characteristics of Bass, Normal, and Treble, respectively have.

The base nozzle mesh 121 has a relatively low output in the frequency region band, the treble nozzle mesh 121 has a relatively high output in the frequency region band, and the normal nozzle mesh 121 has a relatively low output in the frequency region, Can be output.

The characteristics of the base, normal and treble nozzle meshes 121 can be defined relatively between the plurality of nozzle meshes 121.

The output due to the base nozzle mesh 121 may differ by at least 3 dB from the output due to the normal nozzle mesh 121 in the frequency region in which the output difference due to each nozzle mesh 121 is the largest in the frequency region. Also, the output due to the treble nozzle mesh 121 may differ by at least 3 dB compared to the output due to the normal nozzle mesh 121.

The reason why the minimum value of the output difference should be 3 dB is because it corresponds to the criterion that the public perceives the difference of the output to be perceived.

13 shows an algorithm for determining the acoustic characteristics of the nozzle cap 120 and the nozzle mesh 121 according to the present invention.

The nozzle mesh 121 mainly changes the output of the central frequency band among the audio frequency bands. However, the factors affecting the acoustic characteristics of the earphone 10 are various. Therefore, it is difficult to define the base characteristic, the normal characteristic, and the treble characteristic only by the specification of the nozzle mesh 121. [

Therefore, it is necessary to define base, normal and treble characteristics based on the whole of the audio frequency range of 20 Hz to 20 kHz.

The output value corresponding to 1 kHz is defined as R, the output value area of R or more in a range of 100 Hz or more and 1 kHz or less is defined as A, an R or more output value in a range of 1 kHz or more and 10 kHz or less When the area is B, when the value of B / (A + B) is less than 0.35, it is defined that the acoustic characteristic of the base as a whole has treble acoustic characteristic when the acoustic characteristic of the normal is 0.35 or more and 0.65 or less, can do.

Accordingly, the specifications of the first nozzle cap 120, the second nozzle cap 120, and the third nozzle cap 120, that is, the specification of the nozzle mesh 121 of each nozzle cap 120, You can choose.

The embodiment of FIGS. 14 to 16 relates to a method of realizing a finer or variable acoustic characteristic by using the multi-specification nozzle mesh 121. FIG.

Fig. 14 shows another embodiment of the nozzle mesh 121 of the earphone 10 according to the present invention.

The above-described embodiments are characterized in that one nozzle cap 121 is provided in one nozzle cap 120. Here, the nozzle mesh 121 refers to a mesh having a narrow interval that affects the acoustic characteristics, and does not include the cover mesh described above.

Alternatively, a plurality of nozzle meshes 121 may be stacked as needed. In the case where the plurality of nozzle meshes 121 are stacked, it is significant that a negative pressure which can not be realized by the nozzle mesh 121 of a limited specification can be formed.

For example, there is a limit in the minimum spacing of each number of nozzle meshes 121 in terms of physical or productivity. Therefore, when the nozzle mesh 121 is produced in a stacked manner, it is possible to realize a high sound pressure which can not be realized by the single nozzle mesh 121.

The nozzle mesh 121 is defined as a first nozzle mesh 121a and a second nozzle mesh 121b, for example, in the case where two nozzle meshes 121 are stacked.

The first nozzle mesh 121a and the second nozzle mesh 121b may be provided so that at least one area overlaps.

For example, when the second nozzle mesh 121b is stacked on the upper surface of the first nozzle mesh 121a, the first nozzle mesh 121a is divided into a first region formed by the second nozzle mesh 121b And may be provided in some areas. In one form, the first region may comprise a plurality of circles.

When the second nozzle mesh 121b covers the entire opening of the nozzle passage 112 and the first nozzle mesh 121a is provided for a partial area, i.e., the first area, the second nozzle mesh 121b The sound pressure generated can be increased by a small amount. That is, it is possible to control the minute sound pressure by adding the sound pressure only to some areas.

Fig. 15 shows another embodiment of the nozzle mesh 121 of the earphone 10 according to the present invention.

Or nozzle meshes 121 of different specifications may be provided on one plane to form the same layer. That is, the nozzle mesh 121 having different specifications forms one nozzle mesh 121, so that it can have the character of the nozzle mesh 121 of the new specification.

For convenience of explanation, when the nozzle mesh 121 having different specifications is referred to as a third nozzle mesh 121c and a fourth nozzle mesh 121d, the fifth nozzle mesh 121e, which is newly constructed, is referred to as a third nozzle mesh 121c, And the sound pressure of the earphone 10 formed by the fourth nozzle mesh 121d.

The third nozzle mesh 121c is provided in the second center area of the opening of the nozzle passage 112 and the fourth nozzle mesh 121d is provided in the second passage area of the nozzle passage 112 excluding the third nozzle mesh 121c. And may be provided in the third area.

16 shows another embodiment of the nozzle mesh 121 of the earphone 10 according to the present invention.

The hook-type nozzle cap 120 is rotatable even after the coupling. Therefore, it is possible to consider a structure in which the negative pressure by the nozzle mesh 121 is variably controlled using such a characteristic.

An auxiliary nozzle mesh 123 may be provided in the opening hole of the nozzle unit 110 and a nozzle mesh 121 may be provided in the nozzle cap 120. The auxiliary nozzle mesh 123 and the nozzle mesh 121 can form a variable relative angle by the rotatable nozzle cap 120. [

For example, the auxiliary nozzle mesh 123 and the nozzle mesh 121 may each have a plurality of parallel striped meshes. Accordingly, the plurality of parallel striped meshes can form a plurality of parallel striped vent holes.

When the nozzle cap 120 rotates at a G1 angle with respect to the nozzle unit 110, the stripes of the auxiliary nozzle mesh 123 and the nozzle mesh 121 are formed in parallel to form a maximum vent hole. On the other hand, when the nozzle cap 120 rotates G2 degrees with respect to the nozzle unit 110, each stripe of the auxiliary nozzle mesh 123 and the nozzle mesh 121 is formed vertically to form a minimum ventilation hole . The angular difference between G1 and G2 can be 90 degrees.

The larger the area formed by the vent holes, the lower the sound pressure, and the smaller the area, the higher the sound pressure, which may affect the acoustic characteristics.

The user can adjust the amount of rotation of the nozzle cap 120 in a range between the angles G1 and G2 to adjust the area of the vent hole to adjust the acoustic characteristics.

17 (a) to 17 (c) are graphs showing the aeration amount and the sound field characteristics of the earphone 10 according to the present invention.

As shown in FIG. 17 (a), when the air flow rate of the nozzle unit 110 is adjusted, a region A (a), which is a region close to a resonance frequency f0, which is a peak point immediately before a first peak is generated, The frequency output level of the region can be changed. When the airflow amount of the nozzle unit 110 decreases, the output of the A region band decreases, and when the airflow increases, the output increases.

17 shows a case where the A region is in the vicinity of the 1 kHz to 2 kHz region, but it is not limited thereto and may vary according to the specifications of the earphone 10. This characteristic is also applied to the case where the acoustic characteristics of the regions B and C are described below.

As can be seen, in the previous embodiments, the acoustic characteristics are changed by adjusting the amount of airflow through the nozzle unit 110. [

However, the change in the acoustic characteristic may be changed not only by the nozzle unit 110 but also by the amount of air communication in the other area of the earphone 10.

A method of changing the acoustic characteristics through adjustment of the aeration amount of the other region of the earphone 10 through the following embodiments will be described.

For example, the acoustic characteristics may vary depending on the degree of air circulation of the driver unit 200 itself.

When the amount of air supplied by the holes provided on the rear surface of the driver unit 200 is adjusted, the degree of output of the frequency band excluding the region B in the vicinity of 1 kHz may vary as shown in FIG. 17 (b). The output of the frequency domain band smaller than the B domain is decreased and the output of the frequency domain band larger than the B domain is increased when the air through the hole on the rear side of the driver unit 200 is decreased. On the contrary, when the amount of airflow through the hole on the rear side of the driver unit 200 increases, the output of the frequency region band smaller than the region B increases and the output of the frequency region band larger than the region B decreases.

That is, since the amount of airflow behind the driver unit 200 is large and small, the acoustic characteristic has the same characteristic change as that of the seesaw operation.

As another example, the acoustic characteristics may vary depending on the degree of ventilation on the rear surface of the earphone 10 housing 100. [

In the case where the amount of ventilation by the holes formed in the housing 100 in the rear direction of the driver unit 200 is adjusted, the degree of output of the low frequency band C region may be changed as shown in Fig. 17 (c). The output of the C region band can be reduced when the airflow amount is reduced by the holes formed in the housing 100 in the rear direction of the driver unit 200,

18 is a partially exploded perspective view of the earphone 10 related to the present invention.

The housing 100 may have a base hole 331 and a flat hole 332. In particular, the base hole 331 and the flat hole 332 may be provided on the first surface of the housing 100, and the first surface may be the rear surface of the housing 100.

The sound characteristics can be changed according to the rotation of the rotation part 320 coupled to the rear surface.

The rotation part 320 is provided with an opening / closing hole 326. The opening and closing holes 326 may have different acoustic characteristics by opening and closing the base hole 331 or the flat hole 332 according to the rotation of the rotation part 320. When the opening / closing hole 326 opens the flat hole 332, a sound having a characteristic of a bass booster is performed when the opening / closing hole 326 opens the base hole 331, and a treble booster ). ≪ / RTI >

Bass or treble emphasis is only a few embodiments of the acoustic form, but the acoustic properties may vary depending on the shape and size of the hole.

The opening and closing holes 326 may be provided on the second surface of the rotation unit 320. The second surface means the surface facing the first surface of the housing 100. And the second side is the inner side bracket 321 of the rotation part 320.

The inner bracket 321 may be integrally fixed to the housing 100 and guide the rotation of the inner bracket 321. The details will be described later.

The base hole 331 and the flat hole 332 have different aeration amounts with respect to the enclosure of the housing 100. The base hole 331 has an area of a relatively large hole so that the ventilation amount is relatively larger than that of the flat hole 332. [ The flat hole 332 has a relatively small hole area, and the ventilation amount is relatively smaller than that of the base hole 331 by a pipe-like structure to be described later.

In general, the lower the amount of ventilation, the lower the bass characteristic can be achieved. This can be achieved by reducing the size of the hole, but it is impossible to make the hole diameter unlimited in the side of the hole processing. Therefore, a pipe shape can be implemented for controlling the amount of airflow.

Fig. 19 is a partially exploded perspective view of the earphone 10 related to the present invention, and Fig. 20 is a front view of the inside of the inside case 311 and the inside of the outside case 312. Fig. For convenience of description, FIG. 19 and FIG. 20 are simultaneously referred to.

The housing 100 includes an inner case 311 for directly forming a front portion 3101 for mounting components such as the driver unit 200 and an outer case 311 for enclosing an outer surface 3111 of the inner case 311 312). ≪ / RTI > The inner surface 3121 of the outer case 312 can be coupled to the outer surface 3111 of the inner case 311.

The size of the flat hole 332 can not be made infinitely small as described above and the flat hole 332 and the inner case 311 provided in the outer case 312 and particularly the hole plate 3122 and the inner case 311, The amount of ventilation can be made small through the inner hole 333 provided in the inner space 333.

The flat hole 332 and the inner hole 333 are not provided at the same position in a state where the outer case 312 is coupled to the inner case 311. [ That is, the flat hole 332 and the inner hole 333 are connected by a channel groove 334 formed in the inner side surface 3121 of the inner case 311.

The inner surface 3121 of the outer case 312 is sealed by the outer surface 3111 of the inner case 311 with respect to the region excluding the channel groove 334. [ The air in the enclosure having the driver unit 200 is moved out of the housing 100 in the order of the inner hole 333, the channel groove 334 and the flat hole 332, You can enter the path.

The channel groove 334 forms a depressed area in the inner surface 3121 of the outer case 312. The shape of the channel groove 334 may have a 'C' shape to connect the inner hole 333 and the flat hole 332. However, it may take different forms depending on the length requirements of the pipeline.

The base hole 331 of the inner case 311 and the base hole 331 of the outer case 312 may be disposed at the same point in a state where the inner case 311 and the outer case 312 are engaged. That is, the base hole 331 of the inner case 311 and the base hole 331 of the outer case 312 do not form a separate path from each other. Therefore, the air in the front portion 3101 can be directly inserted and removed through the respective base holes 331 of the inner case 311 and the outer case 312. Therefore, the amount of air entering and exiting the cooler, that is, the amount of air to be supplied, can be larger than when passing through the path including the flat hole 332. [

Referring again to FIG. 18, a sealing gasket 341 is provided between the first surface of the housing 100 and the second surface of the rotation portion 320. The sealing gasket 341 prevents air from leaking to another region that is not opened when the opening / closing hole 326 opens the flat hole 332 or the base hole 331 to prevent unexpected noise from occurring.

The sealing gasket 341 may have holes of the same shape at each of the positions corresponding to the flat holes 332 and the base holes 331 and may be coupled to the outside of the first surface of the housing 100. A fixing protrusion 342 is formed outside the first surface of the housing 100 to prevent the flow of gas between the sealing gasket 341 and the housing 100 and a sealing protrusion 342 corresponding to the shape of the fixing protrusion 342 is formed in the sealing gasket 341 A fixing groove 343 may be provided.

The inner bracket 321 of the rotation part 320 is engaged with the rotation dial 346 and rotates together. The opening and closing holes 326 provided in the inner bracket 321 may open and close at least one of the base hole 331 and the flat hole 332 to allow the air of the enclosure to pass through only one of the two holes 331 and 332 do.

The first ventilation mesh 344 may be coupled to the opening and closing holes 326 as needed to further reduce the ventilation amount.

A rotary dial 346 can be coupled to the rear surface of the inner bracket 321. The rotation dial 346 is formed as described above so that a pattern is formed on the outer circumferential surface so that the user can grasp and rotate the rotation dial 346.

The rotary dial 346 may be provided with at least one hole 3441 for adjusting the amount of air and a second ventilation mesh 348 covering the hole.

FIG. 21A is a rear perspective view of the rotation unit 320, FIG. 21B is a front perspective view of the housing 100, and FIG. 22 is a longitudinal sectional view of the earphone 10. 21 and 22 together for convenience of explanation.

As described above, the rotation unit 320 is rotatably coupled to the housing 100. The housing 100 may have a coupling flange 313 forming a circular opening. The rotating hook portion 322 of the rotating portion 320 is engaged with the engaging flange 313 so as to engage with the hook 3222 and rotate along the inner peripheral surface of the engaging flange 313.

The outer circumferential surface 3221 of the rotary hook portion 322 and the inner circumferential surface of the engaging flange 313 can be engaged with each other to guide the rotation of the rotation portion 320. [

The hook 3222 of the rotation hook portion 322 can be located in the inner space formed by the engagement flange 313 by being stretched inside the engagement flange 313. [

The rotation angle of the rotation part 320 can be realized by the guide part 327 including the guide step part 323 of the rotation part 320 and the fixing protrusion 342 provided on the first surface of the housing 100 .

The both side boundaries of the guide stepped portion 323 can be engaged with the fixing protrusion 342 and rotate within the first angle as the rotating portion 320 rotates to one end or the other end of the first angle.

The rotation hook portion 322 may have a plurality of hook protrusions 322a. The plurality of hook protrusions 322a may be resilient for hook engagement by being partitioned from each other. The plurality of hook protrusions 322a are gathered together and pass through the opening of the coupling flange 313 and are coupled to the housing 100 by the elastic restoring force when the rotation part 320 is coupled to the housing 100. [ It can be restored and fixed again.

However, due to manufacturing tolerances or physical deformation due to the material of the rotating hook portion 322, the rotating portion 320 may not be completely fastened to the housing 100 because the rotating portion 320 is not completely restored to the original state. These problems affect not only simple clearance or flow problems but also aeration, which may have unintended effects on sound output.

The supporting rubber 324 opens the plurality of hook protrusions 322a to the outside to prevent the plurality of hook protrusions 322a from being opened or widened to the original position after being compressed by the material properties. The support rubber 324 may comprise a resilient material.

As the plurality of hook protrusions 322a are sufficiently opened, the clearance between the first surface of the rotation part 320 and the second surface of the housing 100 is prevented to minimize the noise generated in the sound output.

The supporting rubber 324 also has the effect of making the force required for the rotation of the rotation part 320 larger, thereby allowing the rotation part 320 to rotate when the user gives a sufficient force.

23 is a rear view of the earphone 10 showing some states of varying degree of rotation of the rotation unit 320. Fig.

As described above, the rotation part 320 can rotate within the first angle range with respect to the housing 100. [ The first angle range is determined by the width of the fixing protrusion 342 and the guide step 323.

23 (a) shows a first state in which the rotation section 320 rotates in one direction within the first angle range, FIG. 23 (c) shows a second state in which the rotation section 320 rotates in the first angle range in the other direction, And FIG. 23 (b) shows the third state between FIG. 23 (a) and FIG. 23 (c).

In the first state shown in Fig. 23 (a), the opening / closing hole 326 opens the base hole 331 and closes the flat hole 332. Therefore, the front housing portion 3101 of the housing 100 forming the resonance space allows air to flow in and out through the base hole 331 only. The shape and size of the opening and closing hole 326 may be formed to be equal to or larger than that of the base hole 331. [ It is possible to prevent the opening and closing holes 326 from generating noise when the air enters and exits when the opening and closing holes 326 are equal to or larger than the base hole 331.

23 (c), the open / close hole 326 opens the flat hole 332 and closes the base hole 331. In this state, Therefore, the front housing portion 3101 (see FIG. 22) of the housing 100 forming the resonance space allows air to flow in and out through the flat holes 332 only. Since the path of the air entering and exiting through the flat hole 332 has been described above, it will be omitted.

The shape and size of the open / close hole 326 in FIG. 23 (a) may be formed to be equal to or larger than that of the flat hole 332. The reason for this is the same as the reason that the shape and size of the opening / closing hole 326 are equal to or larger than that of the base hole 331. [

In the third state shown in FIG. 23 (b), the open / close hole 326 can simultaneously open partial areas of the base hole 331 and the flat hole 332. Concretely, when the rotation part 320 rotates from the first state to the second state, it is possible to prevent the opening / closing hole 326 from closing all the areas of the base hole 331 and the flat hole 332 .

If the opening and closing holes 326 block the both of the base hole 331 and the flat hole 332, a unintended sound effect may be generated and a heterogeneous sound output may be generated. Thus, the characteristics of such arrangement, shape, and size play a role of allowing natural and quick conversion from the first state to the second state.

Referring again to FIG. 22, the ear wire 301 electrically connects the ear unit 300 and the main body 200. The unit wire 301 is connected to the electronic part of the front portion 3101 of the ear housing 310. The ear unit wire 301 drawn out from the housing 310 is then wrapped for a certain length by the wire support 302 to prevent damage.

The withdrawn portion of the unit wire 301 and the wire support 302 are provided on the side of the ear housing 310. This is because it must be avoided in consideration of the rotation of the rotation unit 320.

When the unit wire 301 is drawn out to the side of the housing 310, the space occupied in the width direction of the entire ear unit 300 becomes large. This affects the case where the unit 300 is seated on the main body 200.

The user can change the acoustic characteristics of the area A in FIG. 17 and the acoustic characteristics of the area C in FIG. 17 through the adjustment of the rotary dial 346 through the replacement of the nozzle cap having the nozzle mesh of different specifications.

Fig. 24 shows a rear view of the driver unit 200 associated with the present invention.

A unit duct hole 201 is provided on the rear surface of the driver unit 200. The aeration amount of the unit duct hole 201 provided in the driver unit 200 affects the acoustic characteristics of the frequency region band excluding the region B shown in Fig. 17 (b) described above.

The unit damper 221 is fixed to the first rotating member 220a and can be coupled to the rear surface of the driver unit 200. [ The first rotating member 220a can be coupled to the rear surface of the driver unit 200. [ In particular, the first rotary member 220a may be rotatably coupled to the rear surface of the driver unit 200.

For example, the first rotating member 220a may have a rotation protrusion 222 formed on the rotation center axis. The rotation protrusion 222 of the first rotating member 220a can be rotationally coupled to the rotation hole 202 of the driver unit 200. [

The unit damper 221 may include a plurality of damper layers having different ventilation rates. One of the plurality of unit dampers 221 may be positioned corresponding to the unit duct hole 201 on the rear surface of the driver unit 200. [ The ventilation rate of the unit damper 221 corresponding to the unit duct hole 201 may affect the sound.

The plurality of unit dampers 221a, 221b, 221c, and 221d may be located at the same distance from the central axis of the first rotating member 220a. One of the unit dampers 221 can be positioned in the unit duct hole 201 when the first rotating member 220a is positioned at the same distance from the central axis.

The plurality of unit dampers 221a, 221b, 221c, and 221d may be sequentially arranged so as to increase or decrease the amount of air in one direction for the convenience of the user.

The unit duct hole 201 and the unit damper 221 corresponding to the unit duct hole 201 may be provided in close contact with each other. That is, the external air can be introduced only through the corresponding unit damper 221, and air can be prevented from entering or exiting through the other unit damper 221 that does not communicate with the unit damper 221.

A sealing member 223 may be provided along the outer perimeter of the unit duct hole 201 to improve the air shield reliability.

The sealing member 223 is provided between the rear surface of the driver unit 200 and the first rotary member 220a so that one side is closely attached to the rear surface of the driver unit 200 and the other side is closely contacted to the inner surface of the first rotary member 220a . The sealing member 223 can be coupled to the rear surface of the driver unit 200 or one side of the inside of the first rotary member 220a.

The sealing member 223 may be made of an elastic material to improve the shielding reliability.

The user can rotate the first rotary member 220a by disassembling the front housing 110 and the rear housing 120 provided with the driver unit 200 as needed.

Or a part of the first rotating member 220a may be exposed to the outside of the housing 101 to immediately rotate the first rotating member 220a without disassembling the housing 101 to control the amount of airflow.

25 shows a rear view of the driver unit 200 related to the present invention.

In the above embodiment, a plurality of damper layers and one unit duct hole 201 are provided. Conversely, there may be a case in which a plurality of damper layers and a plurality of unit duct holes 201 are provided.

The driver unit 200 may include a plurality of unit duct holes 201a, 201b, and 201c. The plurality of unit duct holes 201 may have different sizes. A plurality of unit duct holes 201 may be provided on the rear surface of the driver unit 200 and between the damper layers. The damper layer may correspond to one unit duct hole 201 of the plurality of unit duct holes 201.

A plurality of unit duct holes 201 may be sequentially arranged in order to increase or decrease the amount of air in one direction for the convenience of the user.

The damper layer may be provided on the second rotary member 220b to sequentially face the plurality of unit duct holes 201 according to the second rotary member 220b.

The second rotating member 220b may include a sealing member 223 similar to the first rotating member 220a and may include a rotation protrusion 222 and may be provided to be exposed to the outside of the housing 101 have.

The user can change the acoustic characteristics of Figs. 17 (a) and 17 (c) through the above-described embodiments as well as change the acoustic characteristics described in Fig. 17 (b) through the rotary member 220 of the driver unit 200 The characteristics can also be changed at the same time, so it is possible to tune the acoustic characteristics over the entire audio frequency range.

In some cases, the earphone of the present invention may be provided so that only some of the three methods of tuning the three acoustic characteristics are available. Although the driver unit 200 described above has a variable shape capable of varying the amount of airflow, the driver unit 200 may have the form of a driver unit 200 having a fixed airflow amount depending on circumstances.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

10: earphone 100: earphone housing
101: EARTHIP 102: CABLE
110: nozzle unit 1101: outer circumferential surface of the nozzle unit
111: Nozzle filter 112: Nozzle passage
120: nozzle cap 1201: inner surface of the nozzle cap
1202: inner surface of nozzle cap top part 120a: first hook type nozzle cap
120b: second hook type nozzle cap 120c: third hook type nozzle cap
121: nozzle mesh 1211: nozzle mesh outer boundary area
121a: first nozzle mesh 121b: second nozzle mesh
121c: third nozzle mesh 121d: fourth nozzle mesh
121e: fifth nozzle mesh 122: bending portion
123: auxiliary nozzle mesh 130:
131: protruding end 132: depressed end
133: depression portion 134: threaded portion
200: driver unit 210: diaphragm
302: wire supporting portion 3101:
311: Inner case 3111: Inner case outside face
3112: damper layer 312: outer case
3121: outer case inner side 3122: hole plate
313: coupling flange 320:
321: Inner side bracket 322:
3221: hook portion outer peripheral surface 3222: hook
322a: hook projection 323: guide step portion
324: Supporting rubber 325: Second magnetic part
326: opening / closing hole 327:
331: Base hole 332: Flat hole
333: inner hole 334: channel groove
341: sealing gasket 342: fixing projection
343: fixing groove 344: first ventilation mesh
3441: Hole 346: Rotary dial
348: Second ventilation mesh

Claims (21)

A driver unit;
A housing for mounting the driver unit by forming a full length part;
A nozzle unit provided at one end of the housing to form an opening hole in the front portion;
A nozzle cap detachably coupled to an outer circumferential surface of the nozzle unit; And
And a nozzle mesh provided on the nozzle cap to shield the opening hole,
The nozzle cap attenuates the output of the second peak region of the frequency-output graph of the earphone, increases the output of the fourth peak region or extends the bandwidth,
Wherein the nozzle cap includes a replaceable first nozzle cap, a second nozzle cap, and a third nozzle cap,
Wherein when the first nozzle cap is engaged, the base acoustic characteristic is output, and when the second nozzle cap is coupled, a normal acoustic characteristic is output, and when the third nozzle cap is coupled, a sound of a treble acoustic characteristic is output. The method according to claim 1,
Wherein the high point region is based on a frequency band of 2 kHz to 20 kHz. A driver unit;
A housing for mounting the driver unit by forming a full length part;
A nozzle unit provided at one end of the housing to form an opening hole in the front portion;
A nozzle cap detachably coupled to an outer circumferential surface of the nozzle unit; And
And a nozzle mesh provided on the nozzle cap to shield the opening hole,
Wherein the nozzle cap includes a replaceable first nozzle cap, a second nozzle cap, and a third nozzle cap,
Wherein when the first nozzle cap is engaged, the base acoustic characteristic is output, and when the second nozzle cap is coupled, a normal acoustic characteristic is output, and when the third nozzle cap is coupled, a sound of a treble acoustic characteristic is output. delete The method of claim 3,
When an output value corresponding to 1 kHz in the frequency-output graph of the earphone is defined as R, an output value area of R or more in the band of 100 Hz or more and 1 kHz or less is defined as A, and an output value area of R or more in the band of 1 kHz or more and 10 kHz or less ,
The value of B / (A + B) is less than 0.35 when the first nozzle cap is engaged, and the value of B / (A + B) when the second nozzle cap is engaged is not less than 0.35 and not more than 0.65, Wherein the value of B / (A + B) when combined is greater than 0.65. The method of claim 3,
The second nozzle cap may be coupled to the second nozzle cap, and when the first nozzle cap is coupled, there is a frequency band of 3 dB or more higher than a frequency band of 2 kHz or more and 6 kHz or less when the second nozzle cap is coupled. Wherein a frequency band of 3 dB or more is present in a frequency band of 2 kHz to 6 kHz. A driver unit;
A housing for mounting the driver unit by forming a full length part;
A nozzle unit provided at one end of the housing to form an opening hole in the front portion;
A nozzle cap detachably coupled to an outer circumferential surface of the nozzle unit;
A nozzle mesh provided on the nozzle cap to shield the opening hole; And
And a hook portion provided on an outer circumferential surface of the nozzle portion and an inner circumferential surface of the nozzle cap,
Wherein the nozzle cap includes a replaceable first nozzle cap, a second nozzle cap, and a third nozzle cap,
A base acoustic characteristic when the first nozzle cap is coupled, a normal acoustic characteristic when the second nozzle cap is coupled, and a sound having a treble acoustic characteristic when the third nozzle cap is coupled. 8. The method of claim 7,
The hook portion
A protruding end formed along a circumference of the outer circumferential surface of the nozzle section or the inner circumferential surface of the nozzle cap; And
And a recessed portion provided corresponding to the protruding end along the circumference of the other one of the outer circumferential surface of the nozzle portion or the inner circumferential surface of the nozzle cap. 8. The method of claim 7,
Wherein the outer diameter of the nozzle cap is greater than the outer diameter of the nozzle first region adjacent the nozzle cap by a predetermined value. 8. The method of claim 7,
The outer diameter of the nozzle cap is equal to the outer diameter of the nozzle second region spaced apart from the nozzle cap,
The earphone includes:
Further comprising an eartip to surround the nozzle cap and the nozzle second region. 8. The method of claim 7,
Wherein the nozzle cap includes:
Wherein the nozzle cap includes an ABS resin, and the nozzle cap is insert-injected into the nozzle cap. 8. The method of claim 7,
Wherein the nozzle cap includes an opening for exposing the nozzle mesh to the outside,
And the diameter of the opening is equal to the inner diameter of the nozzle. 8. The method of claim 7,
Further comprising an eartip cap which surrounds the nozzle cap and surrounds the nozzle cap,
Wherein the ear tip surrounds an upper surface area of the nozzle cap. 14. The method of claim 13,
Wherein the nozzle cap and the eartip each include an opening for exposing the nozzle mesh to the outside,
Wherein an opening of the nozzle cap and an opening diameter of the ear tip are the same. A driver unit;
A housing for mounting the driver unit by forming a full length part;
A nozzle unit provided at one end of the housing to form an opening hole in the front portion;
A nozzle cap detachably coupled to an outer circumferential surface of the nozzle unit;
A nozzle mesh provided on the nozzle cap to shield the opening hole; And a bending portion extending from the nozzle cap and bent to an inner peripheral surface,
Wherein the bending portion is seated in a depression formed in an outer peripheral surface of the nozzle portion,
Wherein the nozzle cap includes a replaceable first nozzle cap, a second nozzle cap, and a third nozzle cap,
Wherein when the first nozzle cap is engaged, the base acoustic characteristic is output, and when the second nozzle cap is coupled, a normal acoustic characteristic is output, and when the third nozzle cap is coupled, a sound of a treble acoustic characteristic is output. 16. The method of claim 15,
Wherein the nozzle cap comprises SUS. A driver unit;
A housing for mounting the driver unit by forming a full length part;
A nozzle unit provided at one end of the housing to form an opening hole in the front portion;
A nozzle cap detachably coupled to an outer circumferential surface of the nozzle unit; And
And a nozzle mesh provided on the nozzle cap to shield the opening hole,
Wherein the nozzle cap is screwed to the nozzle portion,
Wherein the nozzle cap includes a replaceable first nozzle cap, a second nozzle cap, and a third nozzle cap,
Wherein when the first nozzle cap is engaged, the base acoustic characteristic is output, and when the second nozzle cap is coupled, a normal acoustic characteristic is output, and when the third nozzle cap is coupled, a sound of a treble acoustic characteristic is output. A driver unit;
A housing for mounting the driver unit by forming a full length part;
A nozzle unit provided at one end of the housing to form an opening hole in the front portion;
A nozzle cap detachably coupled to an outer circumferential surface of the nozzle unit; And
And a nozzle mesh provided on the nozzle cap to shield the opening hole,
Wherein the nozzle mesh comprises:
A first nozzle mesh and a second nozzle mesh overlapping the first nozzle mesh,
Further comprising an auxiliary nozzle mesh provided in an opening hole of the nozzle portion,
Wherein the nozzle cap is rotatably coupled to the outer circumferential surface of the nozzle portion to vary the amount of airtightness due to the overlapping of the nozzle mesh and the auxiliary nozzle mesh according to the rotation of the nozzle cap,
Wherein the auxiliary nozzle mesh forms a plurality of parallel stripe-shaped vent holes, the nozzle meshes overlapping the plurality of vent holes at a first angle of the nozzle cap, and at the second angle, the plurality of parallel vent holes And a plurality of ventilation holes provided vertically. 19. The method of claim 18,
Wherein the second nozzle mesh is laminated on an upper surface of the first nozzle mesh, and the first nozzle mesh is provided in a part of a first region formed by the second nozzle mesh. delete delete

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