KR102601938B1 - Air pressure balanced earphone - Google Patents

Abstract

The present invention includes a housing having a nozzle formed on one side; A speaker unit disposed inside the housing with a first space between the nozzle and the nozzle; a cover coupled to the opening formed on the other side of the housing; and a duct connecting the inner space of the housing and the outer space of the housing, wherein the first space is communicated with the outer space of the housing through a first pipe formed in the duct. According to the present invention, air pressure balance can be maintained in the front space and rear space of the speaker unit.

Description

Earphones with an air pressure balance structure {AIR PRESSURE BALANCED EARPHONE}

The present invention relates to an earphone with an air pressure balance structure, and to an earphone designed to achieve air pressure balance by eliminating the difference in air pressure between the front space and the back space of the speaker unit.

A speaker converts electrical signals into sound through vibration.

In a speaker, the permanent magnet, plate, and yoke make up the magnetic circuit. A gap is formed between the yoke and the permanent magnet, and a voice coil is disposed within the gap. The magnetic flux generated from the permanent magnet is trapped within the yoke and permanent magnet gap by the plate, and the voice coil vibrates according to the change in polarity of the current under the influence of the magnetic flux.

When current flows through a voice coil placed in a magnetic field, the voice coil receives force and vibrates according to Fleming's left-hand rule. The vibrations of the voice coil are transmitted to the vibrating body, and a wave is generated according to the vibration of the vibrating body. It corresponds to a sound whose wave is a sound wave.

The speaker may be built into the case or housing of a wearable device such as headphones or earphones. Speakers included in headphones or earphones are also called speaker units. A speaker unit includes a frame and a transducer called a driver.

As a technology related to the present invention, an earphone equipped with an air pressure equalizing means disclosed in the Korean Patent Publication discloses an earphone including a first air passage and a second air passage. The first air passage in this related technology is formed in the speaker unit, and the second air passage is formed in the speaker case. In the present invention, the pipe is formed in the housing, and the front and rear spaces of the speaker unit are located outside the housing and within the housing. As it relates to the flow of air between the liver, the purpose, structure and effect of both inventions are distinct from each other.

Republic of Korea Patent No. 10-1958257 (announced on July 2, 2019)

One problem that the present invention aims to solve is to provide an earphone in which the front and back spaces of the speaker unit are independently connected to the external space.

One problem that the present invention aims to solve is to provide an earphone that maintains air pressure balance in the front and back spaces of the speaker unit.

One problem that the present invention aims to solve is to provide an earphone with an air pressure balance pipe formed.

One problem that the present invention aims to solve is to provide an earphone capable of sound tuning using an air pressure balance pipe.

An earphone with an air pressure balance structure according to an embodiment of the present invention includes a housing 110 with a nozzle 111 formed on one side 110a; A speaker unit 130 disposed inside the housing 110 with a first space 11 between the nozzle 111 and the nozzle 111; A cover 140 coupled to the opening 113 formed on the other side 110b of the housing 110; And the housing inner space 10 and the housing outer space 20 include a connecting duct 150, and the first space 11 is a housing outer space ( 20) can be configured to communicate with.

In addition, the earphone has a first hole 112 connecting the housing inner space 10 and the housing outer space 20 formed on the housing 110, and the first conduit 157 has one end. The first hole 112 communicates with the outer space 20 of the housing, and the other end communicates with the first space 11.

In addition, the earphone is arranged so that a second space 12 is formed between the speaker unit 130 and the cover 140, and the second space 12 is located on the first hole 112 or the housing 110. It can be configured to communicate with the housing external space 20 through an independent second hole 122 formed.

In addition, the earphone combines the speaker unit 130 with the inner edge 113b of the opening 113 to divide the second space 12 into the 2-1 space 13 to which the speaker unit 130 belongs, and the speaker unit. It includes a first cover 141 dividing it into a 2-2 space 14 to which (130) does not belong, and the 2-1 space 12a is the first hole 112 or the second hole. It may be configured to communicate with the housing external space 20 by means of a (second hole) 122.

In addition, the earphone further includes a second duct 166 connecting the housing inner space 10 and the housing outer space 20, and the second space 12 is connected to the second duct 166. It can be configured to communicate with the housing external space 20.

Additionally, the earphone may be configured to include a second cover 132 in which the second pipe 166 is disposed on the first pipe 157 and a groove 131 is formed on the inside.

In addition, the earphone has a second cover 132 that covers the first hole 112 and the second hole 122 at one end (132a) connected to the groove 131, and the housing external space 20 has a second hole ( A third hole 133 communicating with the 2-1 space 13 is formed through 122), and a first chamber 15 communicating with the first hole 112 and a second communicating with the second hole 122 are formed. It may be configured to include a partition 134 that spatially separates the chambers 16.

Additionally, the earphone may be configured so that one end of the first pipe 157 communicates with the second space 12 on the side of the speaker unit 130 and the other end communicates with the second hole 122.

Additionally, the earphone may be configured such that the duct 150 includes a duct 117 formed on the inner surface of the housing and a duct cover 151 covering the duct 117.

In addition, the earphone includes an annular portion 143 formed at the other end of the duct cover 151 to fit the circumference of the housing 110, and the inside of the first conduit 157 and the inside of the annular portion 143 within a certain angle range. A connector 144 that allows the first space 11 to communicate may be formed.

Additionally, the earphone may be configured so that the connector 144 intersects the tunnel-shaped first space 11 at 90 degrees.

Additionally, the earphone may be configured to have a plurality of connectors 144 formed along the circumference of the annular portion 143.

Additionally, the earphone may be configured so that the annular portion 143 forms a connection pipe 156 that spatially extends and connects the first pipe 157 and the first space 11.

In addition, the earphone includes a first connector 154 through which the connector 144 communicates with the first pipe 157; and a second connector 155 that communicates with the first space 11, and the connection pipe 156 has one end communicating with the first connector 154 and the other end communicating with the second connector 155. You can.

Additionally, the earphone may be configured such that the first connector 154 and the second connector 155 are formed at a position where the connection pipe 156 rotates within the annular portion 143 within a range of one turn or less.

Specific details of other embodiments are included in “Specific Details for Carrying Out the Invention” and the attached “Drawings.”

The advantages and/or features of the present invention and methods for achieving them will become clear by referring to the various embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the configuration of each embodiment disclosed below, but may also be implemented in various different forms. However, each embodiment disclosed in this specification ensures that the disclosure of the present invention is complete, and the present invention It is provided to fully inform those skilled in the art of the present invention, and it should be noted that the present invention is only defined by the scope of each claim.

According to the present invention, air pressure balance can be maintained in the front and rear spaces of the speaker unit.

In addition, sound tuning in the high, mid, and low ranges is possible using the air pressure balance pipe.

Figure 1 is an exploded view of an earphone with an air pressure balance structure according to an embodiment of the present invention.
Figure 2 is an exemplary diagram of a housing and a cover according to an embodiment of the present invention.
3 is an exemplary view of the inner surface of a housing according to an embodiment of the present invention.
Figure 4 is an exemplary diagram of the spatial division of a housing according to an embodiment of the present invention.
Figure 5 is an exemplary diagram of a duct according to an embodiment of the present invention.
Figure 6 is an exemplary diagram of a duct according to an embodiment of the present invention.
Figure 7 is an exemplary diagram of a duct according to an embodiment of the present invention.
Figure 8 is a cross-sectional view of an earphone having an air pressure balance structure with a duct according to an embodiment of the present invention.
Figure 9 is a cross-sectional view of an earphone having an air pressure balance structure with a duct according to an embodiment of the present invention.
Figure 10 is a cross-sectional view of an earphone having an air pressure balance structure with a duct according to an embodiment of the present invention.
Figure 11 is an exemplary diagram of a duct cover according to an embodiment of the present invention.
Figure 12 is an exemplary diagram of a duct cover according to an embodiment of the present invention.
Figure 13 is an exemplary diagram of a duct cover according to an embodiment of the present invention.

Before explaining the present invention in detail, the terms or words used in this specification should not be construed as unconditionally limited to their ordinary or dictionary meanings, and the inventor of the present invention should not use the terms or words in order to explain his invention in the best way. It should be noted that the concepts of various terms can be appropriately defined and used, and furthermore, that these terms and words should be interpreted with meanings and concepts consistent with the technical idea of the present invention.

That is, the terms used in this specification are only used to describe preferred embodiments of the present invention, and are not used with the intention of specifically limiting the content of the present invention, and these terms refer to various possibilities of the present invention. It is important to note that this is a term defined with consideration in mind.

In addition, it should be noted that in this specification, singular expressions may include plural expressions, unless the context clearly indicates a different meaning, and may include singular meanings even if similarly expressed in plural. .

Throughout this specification, when a component is described as “including” another component, it does not exclude any other component, but includes any other component, unless specifically stated to the contrary. It could mean that you can do it.

Furthermore, if a component is described as being "installed within or connected to" another component, it means that this component may be installed in direct connection or contact with the other component and may be installed in contact with the other component and It may be installed at a certain distance, and in the case where it is installed at a certain distance, there may be a third component or means for fixing or connecting the component to another component. It should be noted that the description of the components or means of 3 may be omitted.

On the other hand, when a component is described as being “directly connected” or “directly connected” to another component, it should be understood that no third component or means is present.

Likewise, other expressions that describe the relationship between components, such as "between" and "immediately between", or "neighboring" and "directly neighboring", have the same meaning. It should be interpreted as

In addition, in this specification, terms such as "one side", "other side", "one side", "the other side", "first", "second", etc., if used, refer to one component. It is used to clearly distinguish it from other components, and it should be noted that the meaning of the component is not limited by this term.

In addition, in this specification, terms related to position such as "top", "bottom", "left", "right", etc., if used, should be understood as indicating the relative position of the corresponding component in the corresponding drawing. Unless the absolute location is specified, these location-related terms should not be understood as referring to the absolute location.

In addition, in this specification, when specifying the reference numeral for each component in each drawing, the same component has the same reference number even if the component is shown in different drawings, that is, the same reference is made throughout the specification. The symbols indicate the same component.

In the drawings attached to this specification, the size, position, connection relationship, etc. of each component constituting the present invention is exaggerated, reduced, or omitted in order to convey the idea of the present invention sufficiently clearly or for convenience of explanation. It may be described, and therefore its proportions or scale may not be exact.

In addition, hereinafter, in describing the present invention, detailed descriptions of configurations that are judged to unnecessarily obscure the gist of the present invention, for example, known technologies including prior art, may be omitted.

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

Figure 1 is an exploded view of an earphone with an air pressure balance structure according to an embodiment of the present invention.

The speaker unit 130 converts electrical signals into sound through vibration. The speaker unit 130 may be arranged within the housing 110 in a front space and a rear space. A vibrating body is placed inside the speaker unit 130, and the air pressure in the space in front of the speaker unit and the space behind the speaker unit is increased due to the waves caused by the vibration of the vibrating body and the close contact structure between the speaker unit 130 and the housing 110. Differences may occur. When wearing the earphone 100, the external auditory canal and the nozzle 141 are in close contact, so the air pressure within the external auditory canal connected to the front space of the speaker unit may show a different air pressure difference from the outside or the back space of the speaker unit. And the difference in air pressure in the ear canal may feel unpleasant to the user.

The air pressure balanced earphone 100 (hereinafter referred to as earphone) according to an embodiment of the present invention is characterized by a structure in which air pressure balance is maintained between the external auditory canal and the outside by reducing the air pressure difference.

The arrangement direction of the earphones 100 can be explained based on the speaker unit 130 disposed inside. For example, the front, which is the direction in which sound is emitted from the speaker unit 130, is designated as the You can decide.

Referring to FIG. 1, the earphone 100 may be configured to include a housing 110, a speaker unit 130, a cover 140, and a duct 150.

The housing 110 may be divided into one side 110a close to the output surface of the speaker unit 130 and the other side 110b opposite, based on the speaker unit 130 disposed in the housing internal space 10. A nozzle 111 may be formed on one side (110a), and an opening 113 may be formed on the other side (110b).

The speaker unit 130 has a sound generating function and may be placed in the housing interior space 10.

The cover 140 may be coupled to the opening 113 formed on the other side 110b of the housing 110.

The duct 150 has an air pressure balance maintenance function and may be placed in the housing interior space 10. The duct 150 may form a conduit independently or together with the housing 110.

Figure 2 is an exemplary diagram of a housing and a cover according to an embodiment of the present invention.

Cover 140 may be composed of one or two units. The cover 140, which is composed of two units, may be configured to include a first cover 141 and a second cover.

Referring to Figure 2, the first cover 141 is depicted. The earphone 100 is configured so that the first cover 141 is coupled to the inner edge 113b of the housing 110, and the second cover (not shown) is coupled to the outer edge 113a of the housing 110. You can.

3 is an exemplary view of the inner surface of a housing according to an embodiment of the present invention.

Referring to FIG. 3, a space for the duct 150 may be provided in the housing 110. The duct 150 may be disposed along the inner surface of the housing 110, including the peripheral surface where the nozzle 111 is formed.

The duct 150 may form a conduit independently of the housing 110, but can effectively form a conduit when using the inner surface of the housing. As an example, the inner surface of the housing includes an annular coupling part 115, a connecting bone 116, a conduit bone 117, a bracket coupling part 119, a first hole 121, a second hole 122, and a partition wall ( 123) can be provided.

The annular coupling portion 115 includes a connecting bone 116 and may be configured to couple with the annular portion of the duct 150. The conduit bone 117 may be formed into a groove and be configured to couple with the first conduit 157 of the duct 150.

The bracket coupling portion 119 may be coupled to the bracket 163 of the duct 150. A first chamber 15 and a second chamber 16 are formed with a partition wall 123 in between, a first hole 121 is formed in the first chamber 15, and a first hole 121 is formed in the second chamber 16. Two holes 122 may be formed.

Figure 4 is an exemplary diagram of the spatial division of a housing according to an embodiment of the present invention.

Referring to Figure 4, the space formed by the housing 110 and the first cover 141 is depicted.

The housing inner space 10 is divided into a first space 11 and a second space 12 by the speaker unit 130, and the second space 12 is divided into a 2-1 space by the first cover 141. It can be divided into (13) and 2-2 space (14). The first space 11 corresponds to the front space of the speaker unit 130, and the second space 12 corresponds to the rear space of the speaker unit 130. The outside of the housing 110 corresponds to the housing external space 20.

Figure 5 is an exemplary diagram of a duct according to the first embodiment of the present invention.

Referring to FIG. 5, the shape of the duct 150 including the first chamber 15 and the first conduit 157 is depicted.

The duct 150 may be configured to include a duct cover 151, a bracket 163, and a mesh 160. The duct cover 151 covers the inner surface of the housing and forms the first pipe 157. One side of the duct cover 151 is coupled to the inner circumference of the nozzle 141, and the other side forms a first chamber 15 corresponding to the first hole 121.

The bracket 163 is coupled to the other side of the duct cover 151 with the mesh 160 interposed therebetween. The bracket 163 forms the thickness of the first chamber 15.

Figure 6 is an exemplary diagram of a duct according to a second embodiment of the present invention.

Referring to FIG. 6, the shape of the duct 150 including the first chamber 15, the second chamber 16, and the first conduit 157 is depicted.

The duct 150 may be configured to include a duct cover 151, a first bracket 164, a second bracket 165, and a first mesh 161 and a second mesh 162. The duct cover 151 covers the inner surface of the housing and forms the first pipe 157. One side of the duct cover 151 is coupled to the inner circumference of the nozzle 141, and the other side includes a first chamber 15 corresponding to the first hole 121, a second chamber 16 corresponding to the second hole, and A third hole 159 is formed. The third hole 159 connects the second chamber 16 and the inner space of the housing.

The first bracket 164 is coupled to the other side of the duct cover 151 with the first mesh 161 in between, and the second bracket 165 is connected to the duct cover 151 with the second mesh 162 in between. joins to the other side of The first bracket 164 defines the thickness of the first chamber 15 and the second bracket 165 defines the thickness of the second chamber 16.

Figure 7 is an exemplary diagram of a duct according to a third embodiment of the present invention.

Referring to FIG. 7, the shape of the duct 150 including the first chamber 15, the second chamber 16, the first conduit 157, and the second conduit 166 is depicted.

The duct 150 includes a duct cover 151, a first bracket 164, a second bracket 165, a first mesh 161, a second mesh 162, a second pipe wall 167, and a second pipe cover. It may be configured to include (168). The duct cover 151 covers the inner surface of the housing and forms the first pipe 157. One side of the duct cover 151 is coupled to the inner circumference of the nozzle 141, and the other side includes a first chamber 15 corresponding to the first hole 121, a second chamber 16 corresponding to the second hole, and A third hole 159 is formed. The third hole 159 connects the second chamber 16 and the inner space of the housing.

The second pipe wall 167 and the second pipe cover 168 are sequentially combined on the duct cover 151 to form the second pipe 166. The first pipe 157 connects the first space 11, which is the space in front of the speaker unit 130, among the interior spaces of the housing, and the exterior space 20 of the housing, and the second pipe 166 connects the interior space of the housing. The 2-1 space (13) corresponding to the rear or side space of the speaker unit (130) is connected to the housing external space (20).

The first bracket 164 is coupled to the other side of the duct cover 151 with the first mesh 161 in between, and the second bracket 165 is connected to the duct cover 151 with the second mesh 162 in between. joins to the other side of The first bracket 164 defines the thickness of the first chamber 15 and the second bracket 165 defines the thickness of the second chamber 16.

The second pipe wall 167 forms the thickness of the second pipe 166, and the second pipe cover 168 forms the second pipe 166 together with the duct cover 151 and the second pipe wall 167. form

Figure 8 is a cross-sectional view of an earphone having an air pressure balance structure with a duct according to an embodiment of the present invention.

Referring to Figure 8, a cross-section of the housing corresponding to the duct 150 depicted in Figure 5 is depicted. The first hole 121 formed in the housing 110 communicates with the outer space of the housing. The first pipe 157 of the duct 150 connects the first space 11 and the outer space of the housing through the first hole 121. The 2-1 space (13) communicates with the outer space of the housing through the third hole (159) and the first hole (121).

Figure 9 is a cross-sectional view of an earphone having an air pressure balance structure with a duct according to an embodiment of the present invention.

Referring to Figure 9, a cross-section of the housing corresponding to the duct 150 depicted in Figure 6 is depicted. The first hole 121 and the second hole 122 formed in the housing 110 communicate with the external space of the housing. The first pipe 157 of the duct 150 connects the first space 11 and the outer space of the housing through the first hole 121. The 2-1 space 13 communicates with the outer space of the housing through the third hole 159 and the second hole 122. That is, the front space and the back space of the speaker unit 130 can communicate with the outer space of the housing through different holes.

Figure 10 is a cross-sectional view of an earphone with an air pressure balance structure having a duct according to an embodiment of the present invention.

Referring to Figure 10, a cross-section of the housing corresponding to the duct 150 depicted in Figure 7 is depicted. The first hole 121 and the second hole 122 formed in the housing 110 communicate with the external space of the housing. The first pipe 157 of the duct 150 connects the first space 11 and the housing external space 20 through the first hole 121. The second pipe 166 of the duct 150 connects the 2-1 space 13 and the housing external space 20 through the second hole 122.

That is, the front space and the back space of the speaker unit 130 can communicate with the outer space of the housing through different conduits and holes.

Figure 11 is an exemplary diagram of a duct cover according to a fourth embodiment of the present invention.

Referring to FIG. 11, a duct cover 151 according to a first embodiment of the present invention included in the duct 150 depicted in FIG. 1 is depicted. The duct cover 151 may be configured to include an annular portion 152, a first pipe 157, and a chamber portion 158.

The annular portion 152 may be formed to include a connector 153 and a connecting pipe 156. The connector 153 may be formed to include a first connector 154 and a second connector 155. The first connector 154 may be formed at one end of the connection pipe 156, and the second connector 155 may be formed at the other end of the connection pipe 156. The connection pipe 156 may be formed to rotate 1/2 times in a circumferential shape within the annular portion 152.

The first pipe 157 in the pipe section communicates with the first space 11 depicted in FIG. 4 through the second connection port 155 and the connection pipe 156 communicating with the first connection port 154.

The connection pipe 156 functions to extend the first pipe 157 of the pipe section.

The first pipe 157 connects the annular portion 152 and the chamber portion 158, and forms the first pipe 157 inside the duct 150.

The chamber portion 158 is coupled to the inner surface of the housing 110.

Figure 12 is an exemplary diagram of a duct cover according to the fifth embodiment of the present invention.

Referring to FIG. 12, a duct cover 151 according to a second embodiment of the present invention included in the duct 150 depicted in FIG. 1 is depicted. The duct cover 151 may be configured to include an annular portion 152, a first pipe 157, and a chamber portion 158.

The annular portion 152 may be formed to include a connector 153 and a connecting pipe 156. The connector 153 may be formed to include a first connector 154 and a second connector 155. The first connector 154 may be formed at one end of the connection pipe 156, and the second connector 155 may be formed at the other end of the connection pipe 156. A plurality of, for example, four first connectors 154 may be formed. The connection pipe 156 may be formed to circle once in a cylindrical shape within the annular portion 152.

The first pipe 157 in the pipe section communicates with the first space 11 depicted in FIG. 4 through a second connection port 155 and a connection pipe 156 that communicates with the four first connection ports 154.

Figure 13 is an exemplary diagram of a duct cover according to the sixth embodiment of the present invention.

Referring to FIG. 13, a duct cover 151 according to a third embodiment of the present invention included in the duct 150 depicted in FIG. 1 is depicted. The duct cover 151 may be configured to include an annular portion 152, a first pipe 157, and a chamber portion 158.

The annular portion 152 may be formed to include a connector 153 and a connecting pipe 156. The connector 153 may be formed to include a first connector 154 and a second connector 155. The first connector 154 may be formed at one end of the connection pipe 156, and the second connector 155 may be formed at the other end of the connection pipe 156. The connection pipe 156 may be formed to circle once in a cylindrical shape within the annular portion 152.

The first pipe 157 in the pipe section communicates with the first space 11 depicted in FIG. 4 through the second connection port 155 and the connection pipe 156 communicating with the first connection port 154.

Depending on the shape and length of the connection pipe 156 according to an embodiment of the present invention, the high-pitched, mid-pitched, and low-pitched sound ranges may be tuned differently.

There is an effect of acoustic characteristics and tuning of the ultra-low range area through air pressure balance, and the internal pressure of the external auditory canal can be relieved when wearing earphones.

Since the front space and rear space of the speaker unit 130 communicate independently with the outer space of the housing through the independent first hole 121 and the second hole 122, the tuning effect can be easily implemented. The space in front of the speaker unit 130 is related to tuning of ultra-low-range sounds, and the space behind the speaker unit 130 is related to tuning of mid-range sounds.

The effect of reducing the high-range sound can be realized by adjusting the length of the connection pipe 156 formed between the housing 110 and the first cover 141.

The second pipe 166 is formed separately to extend between the 2-1 space 13 and the housing external space 20 through the second pipe 166, so that air circulation can be smoother.

As such, according to one embodiment of the present invention, air pressure balance can be maintained in the front space and rear space of the speaker unit.

Additionally, sound tuning in the high, mid, and low ranges is possible using an air pressure balance duct.

Above, various preferred embodiments of the present invention have been described by giving some examples, but the description of the various embodiments described in the "Detailed Contents for Carrying out the Invention" section is merely illustrative and the present invention Those skilled in the art will understand from the above description that the present invention can be implemented with various modifications or equivalent implementations of the present invention.

In addition, since the present invention can be implemented in various other forms, the present invention is not limited by the above description, and the above description is intended to make the disclosure of the present invention complete and is commonly used in the technical field to which the present invention pertains. It is provided only to fully inform those with knowledge of the scope of the present invention, and it should be noted that the present invention is only defined by each claim in the claims.

100: earphone, 110: housing
110a: one side, 110b: other side
111: nozzle, 113: opening
113a: outer edge, 113b: inner edge
115: annular junction, 116: connecting bone
117: duct bone, 119: bracket joint
121: 1st hole, 122: 2nd hole
123: partition wall, 130: speaker unit
141: first cover, 142: second cover
150: duct, 151: duct cover
152: annular part, 153: connector
154: first connector, 155: second connector
156: Connection pipe, 157: First pipe
158: Chamber, 159: Hall 3
160: mesh, 161: first mesh
162: second mesh, 163: bracket
164: 1st bracket, 165: 2nd bracket
166: Second pipe, 167: Pipe wall
168: 2nd pipe cover, 10: inside housing
11: 1st space, 12: 2nd space
13: Space 2-1, 14: Space 2-2
15: first chamber, 16: second chamber
20: Outside of housing

Claims (15)

A housing (110) with a nozzle (111) formed on one side (110a);
A speaker unit disposed inside the housing 110 with a first space 11 between the nozzle 111 and a second space 12 between the cover 140. )(130);
The cover 140 coupled to the opening 113 formed in the other side 110b of the housing 110; and
It includes a duct 150 connecting the housing interior space 10 and the housing exterior space 20,
The first space 11 is communicated with the housing external space 20 through a first pipe 157 formed in the duct 150,
The second space 12 is communicated with the housing external space 20 by a second pipe 166 disposed on the first pipe 157,
The second pipe 166 is configured to include a second cover 132 with a groove 131 formed on the inside,
earphone. In claim 1,
A first hole 112 connecting the housing inner space 10 and the housing outer space 20 is formed on the housing 110,
The first pipe 157 has one end communicating with the housing exterior 110b through the first hole 112 and the other end communicating with the first space 11,
earphone. In claim 2,
The second pipe 166 shares the first hole 112 with the first pipe 157 or uses an independent second hole 122 formed on the housing 110. Constructed to communicate with the external space (20),
earphone. The method of claim 3, wherein the speaker unit 130,
It is coupled to the inner edge 113b of the opening 113 to divide the second space 12 into a 2-1 space 13 to which the speaker unit 130 belongs and a second space 13 to which the speaker unit 130 does not belong. It includes a first cover (141) partitioned into a 2-2 space (14),
The 2-1 space 12a is configured to communicate with the housing external space 20 through the first hole 112 or the second hole 122,
earphone. delete delete The method of claim 4, wherein the second cover 132 is,
One end (132a) covers the first hole 112 and the second hole 122 connected to the valley 131,
A third hole 133 is formed through which the housing external space 20 communicates with the 2-1 space 13 through the second hole 122,
Configured to include a partition 134 that spatially separates the first chamber 15 communicating with the first hole 112 and the second chamber 16 communicating with the second hole 122,
earphone. The method of claim 3, wherein the second pipe 166 is,
One end communicates with the second space 12 on the side of the speaker unit 130,
The other end is configured to communicate with the second hole 122,
earphone. The method of claim 1, wherein the duct 150 is,
Constructed to include a conduit bone 117 formed on the inner surface of the housing and a duct cover 151 covering the conduit bone 117,
earphone. The method of claim 9, wherein the duct cover 151 is,
At the other end, it includes an annular portion 143 formed to fit the circumference of the housing 110,
A connector 144 is formed in a certain angle range of the annular portion 143 to allow the interior of the first pipe 157 to communicate with the first space 11.
earphone. The method of claim 10, wherein the connector 144 is,
Configured to intersect the tunnel-shaped first space 11 at 90 degrees,
earphone. The method of claim 11, wherein the connector 144 is,
Configured to be formed in plural pieces along the circumference of the annular portion 143,
earphone. The method of claim 11, wherein the annular portion 143 is,
Configured to form a connection pipe 156 that spatially extends and connects the first pipe 157 and the first space 11,
earphone. The method of claim 13, wherein the connector 144 is,
A first connection port (154) communicating with the first pipe (157); And a second connector 155 communicating with the first space 11,
The connection pipe 156 is configured such that one end communicates with the first connector 154 and the other end communicates with the second connector 155,
earphone. The method of claim 14, wherein the first connector 154 and the second connector 155 are,
The connection pipe 156 is configured to be formed at a position where it rotates within the annular portion 143 within a range of no more than one turn,
earphone.

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