JP2017098877A - earphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earphone capable of more stably reducing touch noise.SOLUTION: The earphone comprises: a bushing 5 extending from a main body 1; a speaker unit SP accommodated in the main body 1; and a code 6 including a connecting portion 6e connected to the speaker unit SP in the main body 1 and a supporting portion 6f supported by the bushing 5. The code 6 comprises a contact portion Ta which is exposed to the outside between the connecting portion 6e and the supporting portion 6f in a projected manner and is capable of coming into contact with a lower ear leg or an earring ring in a state where the main body 1 is attached to an ear concha.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an earphone, and more particularly to an earphone that satisfactorily reduces touch noise.

As an earphone type, an inner ear type and a canal type (also referred to as an earplug type) are known.
The inner ear type is used by attaching a main body unit containing a speaker unit to the concha of the auricle and outputting sound from the main body unit to the external auditory canal.
In the canal type, a sound tube portion protruding from a main body portion and fitted with an earpiece is inserted and mounted in the ear canal, and sound is output from the sound tube portion to the inside of the ear canal.
Here, the inner ear type and the canal type are referred to as an in-ear type.

  By the way, in the in-ear type earphone, when the cord extending from the main body comes into contact with clothing or the like, the vibration generated by the contact is transmitted to the concha or the inner wall of the ear canal and is heard as noise called touch noise. There is a case.

For this reason, various devices for reducing touch noise have been studied.
For example, Patent Document 1 describes an in-ear type earphone having a structure in which a cord extending from an earphone main body attached to an auricle is brought into contact with an earlobe.
The earlobe is a sufficiently soft site in the pinna. Therefore, when the cord is brought into contact with the earlobe, the vibration that causes the touch noise is absorbed and attenuated by the earlobe before the vibration energy reaches the concha or ear canal. Thereby, touch noise can be reduced.

JP 2014-168115 A

By the way, the shape of the external ear (auricle and external auditory canal) varies greatly from person to person, and the contact condition between the cord and the earlobe when the earphone described in Patent Document 1 is attached to the auricle in a posture where the sound can be best heard. However, it is affected by the shape of the ear.
Therefore, it is assumed that the degree of reduction in touch noise is not always stable and may cause individual differences.
For this reason, the technique described in Patent Document 1 has room for improvement in that touch noise can be more stably reduced without being affected by the shape of the ear as much as possible.

  Therefore, a problem to be solved by the present invention is to provide an earphone that can more stably reduce touch noise.

In order to solve the above problems, the present invention has the following configuration.
1) Main body,
A bushing extending from the main body,
A speaker unit housed in the main body,
A cord having a connection part connected to the speaker unit in the main body part and a support part supported by the bushing;
With
The cord includes a contact portion that protrudes to the outside between the connection portion and the support portion, and that can contact the lower leg or the earring of the earpiece while the main body portion is mounted on the concha. It is an earphone.

  According to the present invention, touch noise can be more stably reduced.

FIG. 1 is a plan view of an earphone 51 as an example of the earphone according to the embodiment of the present invention as viewed from the left. FIG. 2 is a side view of the earphone 51 as viewed from the rear. FIG. 3 is a plan view seen from the left side for explaining a mounting state of the earphone 51 on the pinna E. FIG. 4 is a cross-sectional view for explaining the cord 6 of the earphone 51. FIG. 5 is a cross-sectional view for explaining the arm portion 3 and the exposed portion Ra of the cord 6 in the earphone 51. FIG. 6 is a cross-sectional view at the position S6-S6 in FIG. FIG. 7 is a plan view of the earphone 51 </ b> A of the first modification when viewed from the left. FIG. 8 is a side view of the earphone 51A as viewed from the rear. FIG. 9 is a plan view seen from the left side for explaining a state where the earphone 51A is attached to the pinna E. FIG. FIG. 10 is a cross-sectional view for explaining the arm portion 3 and the exposed portion RaA of the cord 6 in the earphone 51A. FIG. 11 is a plan view of the earphone 51 </ b> B of Modification 2 as viewed from the left. FIG. 12 is a side view of the earphone 51B viewed from the rear. FIG. 13 is a plan view seen from the left side for explaining a state where the earphone 51B is attached to the pinna E. FIG. FIG. 14 is a side view of the earphone 52 according to the second embodiment as viewed from the front. FIG. 15 is a plan view of the earphone 52 viewed from the left. FIG. 16 is a plan view seen from the left side for explaining a mounting state of the earphone 52 to the pinna E.

Example 1
The configuration of an earphone 51, which is Example 1 of an earphone according to an embodiment of the present invention, will be described with reference to FIGS. 1 and 2 with respect to the configuration and with reference to FIG.

The earphone 51 is a canal in-ear type and is for the left ear.
In FIG. 1 and FIG. 2, for convenience, the front, rear, up, down, left and right directions of the head with the earphone 51 attached to the left ear are indicated by arrows.
FIG. 1 is a plan view seen from the left. FIG. 2 is a side view seen from the rear. FIG. 3 is a view seen from the left side for explaining a use state in which the earphone 51 is mounted on the pinna E of the left ear.

  The earphone 51 includes a main body portion 1, an arm portion 3 protruding from the main body portion 1, a bushing 5 that is a cord introduction portion, and a cord 6 that is supported by the bushing 5 at a support portion 6 f and extends from the tip to the outside.

The main body 1 is generally formed in a flat barrel shape crushed in the direction of the axis CL1 extending in the left-right direction, and houses the speaker unit SP therein.
The main body 1 includes a projecting portion 1a projecting rearward and downward in the radial direction, and a sound tube portion 1b projecting with an axis CL2 extending in the front upper direction intersecting the axis CL1 as a central axis.

An earpiece 2 made of silicone rubber is detachably attached to the sound tube portion 1b.
The main body 1 is made of a resin such as ABS resin, for example.

The arm portion 3 is formed in a shape curved in an arc shape so as to extend rearward and upward in the radial direction from the main body portion 1 and gradually toward the front upper right side as the distal end side is separated from the main body portion 1.
The arm 3 is made of a soft material such as elastomer or silicone rubber, and can be elastically deformed very easily in the direction of the arrow Da shown in FIG.

The bushing 5 is connected to the main body portion 1 on the left surface side via a connection portion 4 having a smaller diameter than the main body portion 1.
The bushing 5 is formed along a plane extending generally in the up and down and front and rear directions. Specifically, the bushing 5 is formed in a bow shape extending from the main body portion 1 to the front lower side in the radial direction and facing downward as the distal end side is separated from the main body portion 1.
The connection portion 4 and the bushing 5 are softer than the main body portion 1 and are formed of an equivalent or hard material (for example, hard elastomer or resin) with respect to the arm portion 3.

  A cord 6 extends outward from the tip of the bushing 5. A plug 6p is attached to the extended tip of the cord 6. The plug 6p is connected to an audio playback device (not shown).

As shown in FIG. 4 which is a cross-sectional view, the cord 6 includes two lead wires 6c each corresponding to hot and grounding of an audio signal, and a sheath 6d covering the two lead wires 6c.
Each lead wire 6c includes a metal conducting wire 6a and a covering portion 6b covering the metal conducting wire 6a.
Inside the bushing 5, the sheath 6 d is in contact with the bushing 5.

The end of the cord 6 on the side drawn into the bushing 5 is electrically and mechanically connected to the speaker unit SP at the connection portion 26e via a cord routing route RT described later.
As a result, the audio signal output from the audio reproducing apparatus to which the plug 6p is connected is supplied to the speaker unit SP through the cord 6.
The speaker unit SP outputs sound based on the supplied audio signal. The output sound is emitted from the sound tube portion 1b into the ear canal Eb.

Next, the cord routing route RT in the earphone 51 will be described.
The cord routing route RT means a route between the bushing 5 and the speaker unit SP in the cord 6.

The earphone 51 is configured such that the cord 6 is exposed to the outside at at least one point in the cord routing route RT.
Specifically, as shown in FIG. 1 to FIG. 3, the cord 6 drawn into the bushing 5 from the outside passes through the inside of the connecting portion 4 from the bushing 5 and enters the inside of the main body portion 1. It is pulled out from the position P1 on the rear side of the part 1.

  In the path between the connecting portion 4 and the position P1 including the main body portion 1 formed of a hard resin, the cord 6 is loosely held without being held firmly (movable gap). Be drawn around.

The cord 6 pulled out from the position P1 is pulled out from the position P1 along the arm portion 3 toward the tip of the arm portion 3 so that approximately half of the cross-sectional shape of the cord 6 is exposed to the outside.
The position P <b> 1 is a root position where the rear side edge portion of the arm portion 3 is connected to the main body portion 1.

In this example, the arm 3 has a groove 3a in which a part of the cord 6 (approximately half of the cross-sectional shape in this example) is received from the root position P1 to the tip position P2.
The cord 6 is housed in the groove portion 3a, and a half of the cross-sectional shape is projected from the arm portion 3 and exposed.

Fig.5 (a) is sectional drawing in the S4-S4 position in FIG. 1, Comprising: The code | cord | chord 6 of the state accommodated in the groove part 3a and the groove part 3a is shown.
FIG. 5B is a cross-sectional view of only the arm 3 excluding the cord 6 from FIG.

The cord 6 is housed in the groove 3a from the base position P1 of the arm 3 to the tip position P2 in the rear upper upper edge 3d on the side farther from the main body 1 in the arm 3, and is part of the exposed portion Ra. As exposed to the outside.
The cord 6 is separated from the arm portion 3 at the position P2 of the tip of the arm portion 3, and is drawn into the inside of the main body portion 1 from the position P3 of the upper portion of the main body portion 1.

  The cord 6 drawn into the main body 1 from the position P3 is formed with a knotted ball (not shown) for preventing the disconnection, and is electrically and mechanically connected to the speaker unit SP at the end connection 6e. Has been.

  Between the root position P1 and the tip position P2 of the arm portion 3, the cord 6 is fitted into the groove portion 3a by a strong fitting with mutual elastic deformation, or is fixed with an adhesive or a double-sided tape. It is integrated with the arm part 3 by this method.

A portion between the position P1 and the position P3 in the cord 6 is an exposed portion Ra exposed to the outside.
Further, a portion between the position P1 and the position P2 in the exposed portion Ra is referred to as a contact portion Ta. The contact portion Ta is a portion that is supported by the arm portion 3 and protrudes rearward and upward. Specifically, the contact portion Ta is a portion that can be brought into contact with the lower leg Ed or the earpiece Eh (see FIG. 3) with the earphone 51 attached to the pinna E.

A state in which the earphone 51 having the above-described configuration is attached to the pinna E of the left ear will be described with reference mainly to FIG.
The earphone 51 inserts the sound tube portion 1b fitted with the earpiece 2 into the external auditory canal Eb, and sets the bushing 5 as a position for entering the notch Eg between the tragus Ef and the antitragus Ec. Attach to concha Ea.
The front part of the main body 1 is stored so as to fit between the tragus Ef and the concha Ea, and the rear overhanging portion 1a fits between the antitragus Ec and the concha Ea. .

In this state, the arm portion 3 from which the contact portion Ta of the cord 6 protrudes is formed to be large so that at least the tip side is positioned above the lower leg Ed of the antiaural ring in a natural state. Therefore, the tip end side can be elastically deformed downward to be brought into urging contact with the lower inner surface Ed1 of the lower leg Ed.
That is, when the arm portion 3 is elastically deformed and brought into contact with the lower inner surface Ed1, the contact portion Ta of the arm portion 3 and the cord 6 urges the lower inner surface Ed1 of the anti-ankle lower leg Ed upward by an elastic repulsive force.

Since the lower leg Ed of the anterior ring is a portion that is somewhat soft in the auricle E, it elastically repels the urging of the contact portion Ta.
Therefore, the main body 1 is urged downward in a state in which it is housed in the concha Ea by the reaction force of the urging of the lower leg Ed against the ankle ring by the arm 3 and the elastic repulsive force of the lower leg Ed against the earring. Is done. Thereby, the main-body part 1 is mounted | worn in the pinna E in the very stable state.

In this mounted state, at least a part of the contact portion Ta of the cord 6 is pressed against the lower inner surface Ed1 of the lower leg Ed.
Accordingly, the vibration generated in the portion of the cord 6 extending from the bushing 5 to the outside is propagated through the cord 6 toward the main body 1 and the vibration energy is transmitted to the lower leg Ed against the earring before reaching the main body 1. It is absorbed well and attenuates, and hardly transmits to the main body 1.

The vibration propagating through the cord 6 will be described in detail.
When a portion of the cord 6 extending from the bushing 5 to the outside comes into contact with clothes or the like and vibration is generated, the vibration propagates through the cord 6 and reaches the bushing 5.
In the earphone 51, since the sheath 6d of the cord 6 is in contact with the bushing 5 and the connection portion 4 made of a relatively soft material in the bushing 5 and the connection portion 4, the vibration transmitted through the cord 6 is propagated particularly in the sheath 6d. A part of the vibration energy is absorbed by the bushing 5 and the connecting portion 4 and attenuates.

On the other hand, the lead wire 6c of the cord 6 is not in direct contact with the bushing 5 and the connecting portion 4, and is not compressed in the radial direction, so that vibration propagating through the lead wire 6c is difficult to attenuate.
Therefore, the vibration propagating through the cord 6 is attenuated to some extent at the bushing 5 and the connecting portion 4 and then reaches the exposed portion Ra as vibration propagating mainly through the lead wire 6c.

Between the position P1 and the position P2, the cord 6 is in contact with the arm portion 3 whose sheath 6d is equal to or softer than the bushing 5.
Therefore, even if the vibration propagating through the sheath 6d remains, the vibration is further attenuated as the vibration energy is absorbed by the arm portion 3.
On the other hand, the vibration propagating through the lead wire 6c causes the contact portion Ta, which is a part of the exposed portion Ra, to abut against the lower leg Ed or the earring Eh with the earphone 51 attached to the pinna E. Since the vibration energy is absorbed by the lower leg Ed against the ear ring, the vibration energy is attenuated.

This will be described in more detail with reference to FIG. FIG. 6 is a cross-sectional view at the position S6-S6 in FIG.
As shown in FIG. 6, the cord 6 is pressed against the lower leg Ed of the earring, whereby the metal lead 6a of the lead wire 6c is pressed against the lower leg Ed of the earring via the covering portion 6b and the sheath 6d.
That is, it is pressed inside the cord 6 with no gap in the urging direction.

Therefore, the vibration transmitted through the lead wire 6c of the cord 6 is attenuated because the vibration energy is reliably absorbed by the lower leg Ed (or the earring Eh).
For this reason, even if the portion of the cord 6 that extends downward from the bushing 5 comes into contact with clothes or the like when the earphone 51 is attached to the auricle E, vibration occurs before reaching the main body 1. The main body 1 is hardly reached.
Thereby, the earphone 51 can reduce touch noise.

Further, the arm portion 3 can be elastically deformed greatly, and the contact portion Ta of the cord 6 is elastically brought into contact with the lower leg Ed or the earring Eh even in various auricles having different shapes and sizes. Energize. Therefore, the vibration that causes the touch noise can be surely attenuated by absorbing the vibration energy to the lower leg Ed or the earpiece Eh.
Thereby, the earphone 51 can stably reduce touch noise regardless of individual differences in the shape and size of the pinna E.

  The earphone 51 described in detail above may be modified into the earphone 51A and the earphone 51B of the modification 1A and the modification 1B described below.

(Modification 1A)
The earphone 51A has a cord routing route RTA that is a modification of the cord routing route RT of the cord 6 in the earphone 51.
Specifically, as shown in FIGS. 7 and 8, the earphone 51 </ b> A has the cord 6 exposed between the root position P <b> 1 and the tip position P <b> 2 of the arm portion 3 in the earphone 51. An exposed portion RaA is exposed between the intermediate position P1A and the intermediate position P2A located on the tip side of the intermediate position P1A.

The intermediate position P1A and the intermediate position P2A are located in the outer edge 3d at the rear upper side in the arm 3 which is far from the main body 1.
The intermediate position P1A is set, for example, at a substantially central position from the root to the tip of the arm portion 3, and the exposed portion RaA is provided on the tip side of the arm portion 3.
For this reason, the exposed portion RaA functions as a contact portion TaA that can be brought into contact with the lower leg Ed of the antiauricular ring with the earphone 51A attached to the auricle E as a whole.
Thus, the contact portion TaA is an exposed portion that is supported by the arm portion 3.

The contact relationship between the cord 6 and the arm 3 is shown in FIG. 10, which is a cross-sectional view at the position S10-S10 in FIG.
In this example, as shown in FIG. 10A, a flat flat edge 3b is formed at the rear upper end of the arm 3 instead of the groove. The cord 6 is disposed so as to be in contact with the flat edge portion 3b and along the arm portion 3.

  The rear upper end portion of the arm portion 3 may be not the flat edge portion 3b but a concave portion 3c having a curved surface with a concave middle portion in the left-right direction, as shown in FIG. 10B. Of course, the groove portion 3 a may be formed like the earphone 51.

  The cord routing route RTA for the cord 6 in the earphone 51A will be described more specifically with reference to FIGS.

The cord 6 drawn into the bushing 5 from the plug 6p side passes through the inside of the connection part 4, the main body part 1, and the base part of the arm part 3, and is rearward and upward from the outer edge part 3d of the arm part 3 at the intermediate position P1A. It is pulled out so as to protrude to the side.
And it extends along the surface of the outer edge part 3d of the arm part 3 from the intermediate position P1A to the intermediate position P2A on the front end side, and passes through the inside of the arm part 3 again at the intermediate position P2A.

  The cord 6 that has entered the inside of the arm 3 is pulled out again from the inner intermediate position P4A that is substantially opposite to the intermediate position P2A. Then, the cord 6 is pulled in from the position P3 of the main body 1 to form a knotted ball (not shown), and is electrically and mechanically connected to the speaker unit SP at the end connection portion 6e. .

FIG. 9 is a rear view showing a state in which the earphone 51A is attached to the pinna E.
As shown in FIG. 9, the main body 1 and the bushing 5 are mounted in the same manner as the earphone 51, and the arm portion 3 is in contact with the inner surface of the lower leg Ed of the ankle ring together with the cord 6 protruding as the exposed portion RaA. The portion 3 is biased upward by elastic deformation.
In the earphone 51A, since the exposed portion RaA is provided in a portion near the tip of the arm portion 3, the entire exposed portion RaA functions as a contact portion TaA that urges and abuts against the lower inner surface Ed1 of the lower leg Ed. .

  As a result, the earphone 51A, like the earphone 51, transmits the vibration transmitted through the lead wire 6c (particularly, the metal conductor 6a) from the portion of the cord 6 that extends from the bushing 5, and the vibration energy is transferred to the contact portion TaA. By abutting and urging the lower ring leg Ed, the lower leg Ed can be surely absorbed and attenuated.

  As a result, even when the earphone 51A is attached to the auricle E and the portion of the cord 6 extending downward from the bushing 5 comes into contact with clothes or the like and vibration occurs, the vibration is applied to the main body 1. Attenuating sufficiently before reaching, hardly reaching the main body 1 and reducing touch noise.

(Modification 1B)
The earphone 51B also has a cord routing route RTB obtained by modifying the cord routing route RT of the cord 6 in the earphone 51.
Specifically, as shown in FIGS. 11 and 12, the earphone 51 </ b> B has the cord 6 exposed between the root position P <b> 1 and the tip position P <b> 2 of the arm portion 3 in the earphone 51. For example, it has an exposed portion RaB protruding and exposed in a loop shape from the tip portion. The exposed portion RaB is a portion in which the cord 6 is formed in a loop shape extending in the front-rear and up-down directions and protrudes forward and upward from the arm portion 3.

  The size of the loop is not limited. The shape of the loop is preferably formed so that a portion located above the arm portion 3 in the vertical direction is formed. The position where the exposed portion RaB is provided is not limited to the tip portion, and may be an arbitrary position on the outer edge portion 3d of the arm portion 3.

The cord routing route RTB will be described.
As shown in FIG. 11, the cord 6 drawn into the bushing 5 from the plug 6p side passes through the inside of the arm portion 3 from the inside of the main body portion 1, and in this example, from a position P1B located at the tip of the arm portion 3. Pulled out.
The cord 6 drawn to the outside is formed in a loop shape as the exposed portion RaB as described above, and is again passed through the inside of the arm portion 3 from the position P2B adjacent to the side closer to the main body portion 1 with respect to the position P1B. .

Then, the cord 6 is pulled out again from the inner position P4B, which is substantially opposite to the position P2B in the arm 3, and is pulled in from the upper position P3 of the main body 1 to the inside.
A knot ball (not shown) is formed inside the main body 1 and is electrically and mechanically connected to the speaker unit SP at the end connection portion 6e.

In the cord routing route RTB, the cords 6 are not in contact with each other.
In particular, in the loop-shaped exposed portion RaB, the root portion approaches, but the members of the arm portion 3 are interposed so as to be separated so as not to contact each other.

  This is because, when the cords 6 come into contact with each other at the base portion of the exposed portion RaB, vibrations transmitted from the bushing 5 side to the cord 6 are not transmitted to the loop-shaped portion, but are mostly drawn into the main body portion 1 from the contacted portion. It is transmitted to the part and is heard as touch noise.

FIG. 13 is a rear view showing a state in which the earphone 51B is attached to the pinna E.
As shown in FIG. 13, the main body 1 and the bushing 5 are mounted in the same manner as the earphone 51, and the arm 3 is mounted by being elastically deformed in the direction of the arrow Da in FIG.
With this attachment, the exposed portion RaB of the arm portion 3 and the cord 6 abuts and urges the lower inner surface Ed1 of the lower leg Ed against the earring or the inner wall surface Ej1 of the earring leg Ej.
That is, the arm portion 3 is urged upward by the elastic force, and the exposed portion RaB is urged upward by the deformation force caused by the deformation of the loop shape, the lower inner surface Ed1 or the inner wall surface Ej1.

  As described above, in the earphone 51 </ b> B, the exposed portion RaB is provided so as to protrude forward and upward from the tip of the arm portion 3 or upward or rearward and upward from the intermediate portion of the arm portion 3. Therefore, the exposed portion RaB functions as a contact portion TaB that abuts and urges the lower inner surface Ed1 of the lower leg Ed of the earring or the inner wall surface Ej1 of the earring leg Ej. Also in this example, the contact portion TaB is supported by the arm portion 3.

  As described above, the exposed portion RaB serving as the contact portion TaB is not limited to be supported by the arm portion 3 so as to protrude and be exposed from the tip. For example, it may be supported by the arm portion so as to protrude and be exposed radially outward from the intermediate portion.

  As a result, the earphone 51B, like the earphone 51, transmits the vibration transmitted through the lead wire 6c (particularly the metal conductor 6a) from the portion of the cord 6 extending from the bushing 5 to the vibration energy of the contact portion TaB. It can be surely absorbed and attenuated by the lower leg Ed against the auricle by the urging force against the lower leg ring Ed or the ear ring leg Ej.

  As a result, even when the earphone 51B is attached to the auricle E and the portion of the cord 6 that extends downward from the bushing 5 comes into contact with clothes or the like and vibration occurs, the vibration is sufficiently absorbed. Touch noise can be reduced with hardly reaching the main body 1.

The earphone 51 according to the first embodiment and the earphones 51A and 51B according to the first and second modifications described in detail above are provided between the connection portion 6e connected to the speaker unit SP and the support portion 6f supported by the bushing 5 in the cord 6. This part is provided with contact portions Ta, TaA, and TaB for making contact with the auricle E such as the lower leg Ed of the antiaural ring in a state of being attached to the auricle E.
Further, in the portion passing through the main body 1 on the plug 6p side with respect to the contact portions Ta, TaA, TaB, the main body 1 has a margin of movement and is drawn loosely.
As a result, the vibration propagating from the plug 6p side of the cord 6 toward the main body 1 is absorbed by the auricle E due to the abutment bias of the contact portions Ta, TaA, TaB to the auricle E. Therefore, it is sufficiently attenuated and there is almost no risk of being heard as touch noise.

  That is, the earphones 51, 51A, 51B can more stably reduce touch noise regardless of the shape of the pinna E.

(Example 2)
Next, the configuration of the earphone 52, which is Example 2 of the earphone according to the embodiment of the present invention, will be described with reference to FIGS.

The earphone 52 is a canal in-ear type and is for the left ear.
In FIG. 14 and FIG. 15, for convenience, the front, rear, up, down, left and right directions of the head with the earphone 52 attached to the left ear are indicated by arrows.
FIG. 14 is a side view seen from the front. FIG. 15 is a plan view seen from the left.
FIG. 16 is a view seen from the rear for explaining a use state in which the earphone 52 is attached to the pinna E of the left ear.

  The earphone 52 includes a main body portion 21, a bushing 25 that protrudes from the main body portion 21 as a cord introduction portion, and a cord 26 that is supported by the bushing 25 at a support portion 26 f and extends from the tip to the outside.

The main body 21 is formed in a flat shell shape that is sunk leftward about an axis line CL21 extending in the left-right direction, and accommodates the speaker unit SP therein.
The main body 21 has a sound tube portion 21b that protrudes to the right. A rubber earpiece 22 is detachably attached to the sound tube portion 21b.
The main body 21 is made of a resin such as ABS resin.

  A cord 26 extends outward from the tip of the bushing 25. A plug 26p is attached to the extended end of the cord 26. The plug 26p is connected to an audio playback device (not shown). The configuration and cross-sectional shape of the cord 26 are the same as those of the cord 6.

The end of the cord 26 on the side pulled into the bushing 25 is electrically and mechanically connected to the speaker unit SP at the connection portion 26e at one end via the cord routing route RT2.
The bushing 25 extends downward from the main body 21 and is formed of a hard elastomer or resin.

  As described above, the cord 26 includes the connection portion 6e electrically and mechanically connected to the speaker unit SP and the support portion 26f supported by the bushing 25.

Next, the cord routing route RT2 of the cord 26 in the earphone 52 will be described with reference to FIGS.
In the cord routing route RT2, the cord 26 is radially outside of the outer shape of the main body portion 21 with the axis line CL21 being approximately centered after being pulled from the outside into the bushing 25 and connected to the speaker unit SP. And has an exposed portion Ra2 that has an arc shape.

Specifically, the cord 26 drawn into the inside of the bushing 25 from the tip position P21 in the bushing 25 is drawn out again from the position P22 on the back side of the root in the bushing 25 again.
The cord 26 pulled out from the position P22 is spaced apart radially outward from the main body 21 and passes through the arc-shaped exposed portion Ra2 that passes from the rear lower part to the rear, rear upper part, and upper part of the main body part 21 to the front upper part. Forming.
The exposed portion Ra2 extends along a plane extending generally in the front-rear and up-down directions.
In order to stably maintain the shape of the exposed portion Ra2 and facilitate the handling between the main body portion 21 and the plug 26p, the cord 26 includes a rigidity of a portion that forms the exposed portion Ra2 and a portion drawn from the bushing 25. The rigidity may be different.

  In other words, the cord 26a used for the portion that becomes the exposed portion Ra2 is preferably made to be more rigid than the cord 26b used for the portion pulled out from the bushing 25. For this purpose, the cord 26a and the cord 26b may be electrically connected by a flexible substrate in the bushing.

  The cord 26 of the exposed portion Ra2 reaching the front upper side of the main body portion 21 is drawn into the main body portion 21 from the front upper position P23 of the main body portion 21, forming a knot (not shown). The connection unit 26e is electrically and mechanically connected to the speaker unit SP.

A state in which the earphone 52 having the above-described configuration is mounted on the pinna E of the left ear will be described with reference mainly to FIG.
The earphone 52 is inserted into the outer ear canal Eb with the sound tube portion 21b to which the earpiece 22 is attached, and the bushing 25 is attached as a position that enters the interlaced notch Eg between the tragus Ef and the antitragus Ec.
The main body 21 is attached to the concha. Specifically, the front portion of the main body portion 21 is accommodated so as to be fitted between the tragus Ef and the concha Ea, and the rear portion is fitted between the antitragus Ec and the concha Ea.

The exposed portion Ra2 of the cord 26 is formed in an arc shape that is sufficiently larger than the area of the concha Ea. For this reason, the earphone 52 is mounted so that the exposed portion Ra2 is crushed in the direction of reducing the diameter and placed in the concha Ea.
As a result, in a state where the main body portion 21 is housed in the concha Ea, a part of the exposed portion Ra2 partially abuts on the lower inner surface Ed1 of the lower leg Ed or the earring Eh, and the repulsive force of deformation causes them to Energize outward.

A portion of the exposed portion Ra2 that abuts and urges the lower leg Ed or the earpiece Eh is defined as a contact portion Ta2.
FIG. 16 shows a state in which the contact portion Ta2 is in contact with the contact portion Pt of the lower leg Ed of the ankle wheel and is crushed and deformed, and the contact portion Pt is urged by the reaction force.

As a result, the earphone 52 of the second embodiment reliably absorbs the vibration energy transmitted through the lead wire 26c from the portion of the cord 26 extending from the bushing 25 to the lower leg Ed or the earpiece Eh. Can be attenuated.
Therefore, even if the portion of the cord 26 extending downward from the bushing 25 comes into contact with clothes and the like generates vibration, the vibration is sufficiently attenuated before reaching the main body 21 and hardly reaches the main body 21. .
Thereby, the earphone 52 can reduce touch noise.

As described above, the earphone 52 of the second embodiment is connected to the auricle E in the portion of the cord 26 between the connection portion 26 connected to the speaker unit SP and the support portion 26f supported by the bushing 25. There is provided a contact portion Ta2 that comes into contact with the auricle E such as the lower leg Ed or the earpiece Eh in the mounted state.
Thereby, the vibration propagating from the plug 26p side of the cord 26 toward the main body portion 21 is sufficiently absorbed by the auricle E due to the vibration energy of the contact portion Ta2 being urged against the auricle E. It is attenuated and there is almost no risk of being heard as touch noise.

  That is, the earphone 52 can more stably reduce touch noise regardless of the shape of the pinna E.

  The embodiment and the modification described in detail above are not limited to the above-described configuration, and may be another modification without departing from the gist of the present invention.

  The earphone 51 and the earphone 52 of the first embodiment and the second embodiment, and the earphones 51A and 51B which are modifications of the first embodiment may be used for the right ear by making a front-rear inverted shape. Moreover, it is good also as a stereo earphone provided with the object for left ears, and the object for right ears, respectively.

Although Embodiment 1 and Embodiment 2 have been described as canal-type earphones, an inner-ear type may be used.
The first embodiment, the second embodiment, and the modifications thereof can be appropriately combined within a possible range.

1,21 Main body part 1a Overhang part, 1b, 21b Sound tube part 2,22 Earpiece 3 Arm part 3a Groove part, 3b Flat edge part, 3c Recessed part, 3d Outer edge part 4 Connection part 5, 25 Bushing (cord introduction part)
6, 26, 26a, 26b Cord 6a Metal conductor, 6b Covering part, 6c Lead wire, 6d Sheath 6e, 26e Connection part, 6f, 26f Support part 6p, 26p Plug 51, 51A, 51B, 52 Earphone CL1, CL21 Axis E Auricle Ea Auricular concha, Eb External auditory canal, Ec antitragus, Ed antipodal lower leg Ed1 Lower inner surface, Ef tragus, Eg intercostal notch, Eh antiaural ring Ej P4A, P1B, P2B, P4B, P21, P22 Position Pt Contact part RT, RTA, RT2 Cord routing path Ra, RaA, RaB, Ra2 Exposed part SP Speaker unit Ta, TaA, TaB, Ta2 Contact part

Claims (3)

The main body,
A bushing extending from the main body,
A speaker unit housed in the main body,
A cord having a connection part connected to the speaker unit in the main body part and a support part supported by the bushing;
With
The cord includes a contact portion that protrudes to the outside between the connection portion and the support portion, and that can contact the lower leg or the earring of the earpiece while the main body portion is mounted on the concha. Earphone. The main body portion has an arm portion capable of elastically urging the lower leg of the antiaural ring in a state where the main body portion is mounted on the concha.
The earphone according to claim 1, wherein the contact portion protrudes and is exposed at an outer edge of the arm portion. The main body portion has an arm portion capable of elastically urging the lower leg of the antiaural ring in a state where the main body portion is mounted on the concha.
The earphone according to claim 1, wherein the contact portion is exposed in a loop shape from the arm portion.

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