WO2016009520A1 - Earpiece - Google Patents

Abstract

[Problem] To provide an earpiece that, in a space formed by an outermost sound barrier, an external auditory meatus and an eardrum, absorbs and attenuates the reflected sounds of sounds emitted from an earphone speaker to the interior of the external auditory meatus and further insulates externally intruding sounds as much as possible. [Solution] An earpiece (1) comprises a cylindrical sound guide opening part (11) for guiding sounds outputted from an earphone speaker and further comprises first, second and third sound barriers (21, 22, 23) formed around the sound guide opening part. The earpiece (1) still further comprises predetermined sound absorption paths (31, 32) and the like in those surfaces of the second and third sound barriers which are opposed to the eardrum.

Description

Earpiece

The present invention relates to an earpiece that is inserted into the ear canal and used.

Conventionally, there are earpieces that block external sounds by blocking the external auditory canal with one or more sound insulation walls (for example, Patent Document 1). It is also known that sound leakage from the external auditory canal to the outside is suppressed by the sound insulation wall.

On the other hand, if the sound from the outside is completely blocked by the sound insulation wall body, various problems such as a sense of blockage, howling, or encountering danger without being able to hear the sound from the outside may occur. There is also known an earpiece in which a through-hole that communicates the ear canal and the outside is provided in a part of the sound insulation wall (for example, Patent Document 2).

JP 2006-295533 A JP 2011-049628 A

When the earpiece of Patent Document 1 described above is inserted into the ear canal, the space formed by the sound insulation wall body, the ear canal and the eardrum closest to the outside is hermetically sealed, so the sound emitted from the earphone speaker into the ear canal A part of the light is reflected on the eardrum or the external auditory canal, and attenuates while repeating the reflection in the space. Therefore, the mixed sound of most of the reflected sound and the sound emitted into the ear canal through the sound guide opening reaches the eardrum.

When the earpiece of Patent Document 2 described above is inserted into the ear canal, the space formed by the sound insulation wall, ear canal and eardrum closest to the outside is not hermetically sealed, so part of the reflected sound is emitted to the outside. obtain. However, since sound is mixed from the outside into the space instead, the mixed sound of the sound from the outside and the sound emitted into the ear canal through the sound guide opening reaches the eardrum.

Therefore, in the present invention, in the space formed by the sound insulation wall, the ear canal and the eardrum on the side closest to the outside, the reflected sound of the sound emitted from the earphone speaker into the ear canal is absorbed and attenuated, and the sound mixed from the outside It is an object to provide an earpiece that cuts off as much as possible.

In order to solve the above-described problems, the earpiece of the present invention includes a cylindrical sound guide opening that guides output sound from an earphone speaker and a plurality of sound insulation walls provided around the sound guide opening, and is inserted into the ear canal. One or more first sound insulation walls that shield as much as possible the sound from the outside to the outside of the ear canal and from the inside of the ear canal when inserted into the ear canal when inserted into the ear canal, and the first sound insulation wall A sound insulation wall body different from the first sound insulation wall body provided at a position closer to the eardrum than the first sound insulation wall body, and arranged at least at a position closest to the eardrum among the sound insulation wall bodies different from the first sound insulation wall body. Provided is an earpiece in which a sound absorbing path is provided on a surface of a tympanic membrane side of two sound insulation walls.

In order to solve the above-described problem, the earpiece of the present invention includes a cylindrical sound guide opening that guides output sound from an earphone speaker, and a plurality of sound insulation walls provided around the sound guide opening. One or more first sound insulation walls that shield as much as possible the sound from outside into the ear canal and inside the ear canal when inserted into the ear canal when inserted into the ear canal, A sound insulating wall body different from the first sound insulating wall body provided at a position closer to the eardrum than the sound insulating wall body, and a sound absorbing path is provided on the surface of the sound insulating wall body except for the first sound insulating wall body on the eardrum side Provide earpieces.

In order to solve the above-described problem, the earpiece of the present invention includes a cylindrical sound guide opening that guides output sound from an earphone speaker, and a plurality of sound insulation walls provided around the sound guide opening. One or more first sound insulation walls that shield as much as possible the sound from outside into the ear canal and inside the ear canal when inserted into the ear canal when inserted into the ear canal, A sound insulating wall body different from the first sound insulating wall body provided at a position closer to the eardrum than the sound insulating wall body, and disposed at least at a position closest to the eardrum among the sound insulating wall bodies different from the first sound insulating wall body A sound absorbing path is provided on the surface of the second sound insulating wall body on the eardrum side, and the sound absorbing path is a through-hole penetrating from the surface of the sound insulating wall body to the back surface of the sound insulating wall body or the sound absorbing path extends from the surface of the sound insulating wall body to the sound insulating wall body. Providing earpiece is a non-penetrating concave not penetrating up to the back surface.

In order to solve the above-described problem, the earpiece of the present invention includes a cylindrical sound guide opening that guides output sound from an earphone speaker, and a plurality of sound insulation walls provided around the sound guide opening. One or more first sound insulation walls that shield as much as possible the sound from outside into the ear canal and inside the ear canal when inserted into the ear canal when inserted into the ear canal, A sound insulating wall body different from the first sound insulating wall body provided at a position closer to the eardrum than the sound insulating wall body, and disposed at least at a position closest to the eardrum among the sound insulating wall bodies different from the first sound insulating wall body A sound absorbing path is provided on the surface of the second sound insulating wall body on the eardrum side, and the sound absorbing path is a through-hole penetrating from the surface of the sound insulating wall body to the back surface of the sound insulating wall body or the sound absorbing path extends from the surface of the sound insulating wall body to the sound insulating wall body. A non-penetrating concave not penetrate the to the back, and the sound absorption path, it provides earpiece disposed symmetrically with respect to the sound guide opening.

In order to solve the above-described problem, the earpiece of the present invention includes a cylindrical sound guide opening that guides output sound from an earphone speaker, and a plurality of sound insulation walls provided around the sound guide opening. One or more first sound insulation walls that shield as much as possible the sound from outside into the ear canal and inside the ear canal when inserted into the ear canal when inserted into the ear canal, A sound insulating wall body different from the first sound insulating wall body provided at a position closer to the eardrum than the sound insulating wall body, and disposed at least at a position closest to the eardrum among the sound insulating wall bodies different from the first sound insulating wall body A sound absorbing path is provided on the surface of the second sound insulating wall body on the eardrum side, and the sound absorbing path penetrates from the surface of the sound insulating wall body to the back surface of the sound insulating wall body in a circular, elliptical, triangular, square, or cut shape. A hole, and the sound absorption path, provides earpiece disposed symmetrically with respect to the sound guide opening.

In order to solve the above-described problem, the earpiece of the present invention includes a cylindrical sound guide opening that guides output sound from an earphone speaker, and a plurality of sound insulation walls provided around the sound guide opening. One or more first sound insulation walls that shield as much as possible the sound from outside into the ear canal and inside the ear canal when inserted into the ear canal when inserted into the ear canal, A sound insulating wall body different from the first sound insulating wall body provided at a position closer to the eardrum than the sound insulating wall body, and disposed at least at a position closest to the eardrum among the sound insulating wall bodies different from the first sound insulating wall body A sound absorbing path is provided on a surface of the second sound insulating wall body on the eardrum side, the sound absorbing path is a non-penetrating concave surface that does not penetrate from the surface of the sound insulating wall body to the back surface of the sound insulating wall body, and the sound absorbing path is connected to the sound conducting path. Providing earpiece disposed symmetrically with respect to radially around the mouth and the sound guide opening.

The earpiece of the invention of the present application is provided with a sound absorbing path in the second sound insulating wall body, so that it reflects on the space between the first sound insulating wall body and the second sound insulating wall body among the spaces formed by the first sound insulating wall body, the ear canal and the eardrum. Since the sound can be absorbed, it is possible to suppress the reflected sound from being mixed with the output sound of the earphone speaker.

Further, the earpiece of the present invention provides a sound absorbing path in the third sound insulating wall body together with the second sound insulating wall body, so that the space between the second sound insulating wall body and the third sound insulating wall body and the third sound insulating wall body and the above Since the reflected sound can be absorbed in the space between the first sound insulation wall and the mixed sound with the output sound of the earphone speaker can be further suppressed.

Further, the earpiece of the present invention can be easily manufactured because the specific structure of the sound absorbing path provided in the sound insulating wall different from the first sound insulating wall is a through hole or a non-through concave surface.

In addition, the earpiece of the present invention can absorb sound in a well-balanced manner because the sound absorption path provided in the sound insulation wall different from the first sound insulation wall is arranged symmetrically with respect to the sound introduction opening.

Further, the earpiece of the present invention can be manufactured more easily because the shape of the through hole constituting the sound absorption path is any one of a circle, an ellipse, a triangle, a quadrangle, and a cut shape.

In the earpiece of the present invention, the non-penetrating concave surface constituting the sound absorption path is arranged in a symmetrical radial shape, so that sound can be absorbed evenly in a balanced manner.

FIG. 1 is an explanatory diagram illustrating a configuration of an earpiece according to the first embodiment. FIG. 2 is a perspective view showing a state in which the earpiece of Example 1 is attached to the earphone. FIG. 3 is an explanatory diagram showing a state and operation in which the earpiece of Example 1 is inserted into the ear canal. FIG. 4 is an enlarged view showing the state and operation of the earpiece of Example 1 inserted into the ear canal. FIG. 5 is an explanatory diagram showing the configuration of the earpiece of the second embodiment. FIG. 6 is a diagram of the earpiece of Example 3 as viewed from the eardrum side.

The earpiece of the present invention is used by being inserted into the ear canal after being attached to the tip of the earphone.

First, the configuration of the earpiece of Example 1 will be described with reference to FIGS.

The earpiece (1) includes a cylindrical sound guide opening (11) for guiding output sound from the earphone speaker into the ear canal, a plurality of sound insulation walls (20) provided around the sound guide opening, and the sound insulation wall. And a sound absorption path (30) provided on a predetermined sound insulation wall (FIG. 1).

In addition, the state after attaching the earpiece (1) of a present Example to the front-end | tip of an earphone is shown in FIG. 2 (FIG. 2).

The sound guide opening (11) may have any structure as long as it is a mechanism for guiding the output sound from the earphone speaker into the ear canal.

When the earpiece is inserted into the ear canal (41), the sound insulating wall body (20) is a first sound insulating wall body (21) disposed at a position near the outside farthest from the eardrum (42), and the eardrum. A second sound insulation wall body (22) disposed at a position closest to (a position away from the outside), and a third sound insulation wall body disposed between the first sound insulation wall body and the second sound insulation wall body ( 23) (FIGS. 1 and 3).

The first sound insulation wall body (21) is provided so as to abut against the entire circumference of the outer ear canal wall (41) when the earpiece is inserted into the ear canal and shield sound from the outside to the outside in the ear canal and from the inside of the ear canal as much as possible. (FIG. 3).

In the first sound insulation wall (21), to shield the sound from the outside in the ear canal and from the outside to the outside is as much as possible except for the following special cases. The special case is, for example, when a very strong (loud) external sound that cannot be physically shielded by one sound insulation wall is generated (the same applies to the case where two or more first sound insulation walls are provided). ) And due to individual differences in the shape of the external auditory canal, a case in which the contact over the entire circumference of the outer ear canal wall (41) is partly separated and sound is mixed in or leaked from the gap is assumed.

On the second sound insulation wall (22), predetermined through holes (31, 32) constituting the sound absorption path (30) penetrating from the front surface (the eardrum side) to the back surface are provided (FIGS. 1 and 3). .

The size of the second sound insulation wall (22) is smaller than that of the third sound insulation wall in consideration of insertion into the external auditory canal (FIGS. 1 and 3).

Predetermined through holes (31, 32) constituting the sound absorption path (30) penetrating from the front surface (the eardrum side) to the back surface are also provided on the third sound insulation wall (23) (FIGS. 1 and 3). .

The size of the third sound insulation wall body (23) is larger than the second sound insulation wall body and smaller than the first sound insulation wall body in consideration of insertion into the ear canal (FIGS. 1 and 3).

Among the through holes, triangular notch through holes (32) that are easy to manufacture (process) are formed at the edge of the second sound insulating wall (22) and the edge of the third sound insulating wall (23). Provided (FIG. 1).

Further, in the through hole, a portion other than the edge portion of the second sound insulating wall body (22) and a portion other than the edge portion of the third sound insulating wall body (23) have a circular shape that is easy to manufacture (process). A through hole (31) was provided (FIG. 1).

As for the shape of the through hole, other shapes are acceptable as long as sound absorption is possible. For example, an ellipse shape, a square shape, or a cut shape may be used.

It is preferable to arrange the through holes (31, 32) symmetrically with respect to the sound guide opening (11) (FIG. 1).

In the present embodiment, two sound insulating wall bodies different from the first sound insulating wall body (21) in the sound insulating wall body (20) are provided, but one may be provided, or three or more may be provided (FIG. 1).

Next, the sound absorption operation of the earpiece will be described with reference to FIGS.

The output sound (music, etc.) from the earphone speaker is released into the ear canal (41) via the sound guide opening (11) as shown by the solid line arrows (FIGS. 3 and 4).

The sound emitted into the ear canal (41) diffuses as shown by the solid arcuate line, reaches the ear canal wall and the eardrum (42), and is reflected (FIG. 4).

The reflected sound repeatedly attenuates reflection in a space closed by the first sound insulating wall (21), the ear canal (41), and the eardrum (42). For example, the sound reflected by the upper external auditory canal wall (41) illustrated by the dotted arrow passes through the through hole (31) provided on the second sound insulating wall body (22), and the second sound insulating wall body and the third sound insulating wall body. It reaches the first sound absorbing space (51) between (23) and is absorbed (FIG. 4).

Further, the sound reflected by the lower eardrum (42) illustrated by the dotted arrow passes through the through hole (31) provided on the second sound insulating wall (22), and the second sound insulating wall and the third sound insulating wall. After reaching the first sound absorbing space (51) between the body (23) and absorbing the sound, a part of the sound that has further reached the first sound absorbing space is a through-hole (provided on the third sound insulating wall body). 31) also passes, reaches the second sound absorbing space (52) between the third sound insulating wall body and the first sound insulating wall body (21), and is absorbed (FIG. 4).

Example 2 is an earpiece having two sound-insulating wall bodies and the same size, and only the differences from Example 1 will be described with reference to FIG.

The earpiece (1) includes a cylindrical sound guide opening (11) that guides output sound from the earphone speaker into the ear canal, a plurality of sound insulating walls provided around the sound guide opening, and a predetermined one of the sound insulating walls. A sound absorbing path (31) provided on the sound insulating wall body, and the sound insulating wall body is disposed at a position near the outside away from the eardrum when the earpiece is inserted into the ear canal. A body (21) and a second sound insulation wall body (22) disposed at a position close to the eardrum (FIG. 5).

The first sound insulation wall body (21) and the second sound insulation wall body (22) have the same size (FIG. 5).

Other configurations are the same as those in the first embodiment, and are omitted.

Also, the sound absorption operation of the earpiece is substantially the same as that of the first embodiment, and thus will be omitted.

Example 3 is an earpiece having a specific configuration of the sound absorption path, and only the configuration different from Example 2 will be described with reference to FIG.

The earpiece includes a cylindrical sound guide opening (11) that guides output sound from the earphone speaker into the ear canal, a plurality of sound insulating walls (20) provided around the sound guide opening, and a predetermined one of the sound insulating walls. And a sound absorbing path (33) provided on the sound insulating wall body, wherein the sound insulating wall body is disposed at a position near the outside away from the eardrum when the earpiece is inserted into the ear canal. And a second sound insulation wall body (22) disposed near the eardrum (FIG. 6).

On the second sound insulation wall (22), four linear non-penetrating concave surfaces (33) are provided symmetrically about the sound guide opening (11) (FIG. 6).

The arrangement and number of the non-penetrating concave surfaces (33) can be changed at any time in consideration of the conditions required by the user, the material, shape, size, etc. of the sound insulation wall.

Next, the sound absorption operation of the earpiece will be described with reference to FIG.

The output sound (music, etc.) from the earphone speaker is released into the ear canal via the sound guide opening (11), diffuses, and is reflected on the ear canal wall or the eardrum. The reflected sound is repeatedly attenuated in the space closed by the sound insulation wall, the ear canal, and the eardrum. For example, the sound reflected by the eardrum passes through the gap between the non-penetrating concave surface (33) provided on the second sound insulation wall (22) and the ear canal, and the sound absorption between the second sound insulation wall and the first sound insulation wall. The sound reaches the space and is absorbed (FIG. 6).

Since the earpiece of the present invention is an excellent earpiece that exhibits excellent voice performance by absorbing part of the reflected sound, it has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Earpiece 11 Sound introduction opening part 20 Sound insulation wall body 21 1st sound insulation wall body 22 2nd sound insulation wall body 23 3rd sound insulation wall body 30 Sound absorption path 31 Triangular notch through-hole provided in the edge part of a 2nd sound insulation wall body and a 3rd sound insulation wall body (Sound absorption path)
32 Circular through-holes (sound absorption paths) provided in parts other than the edges of the second and third sound insulation walls
33 Non-penetrating concave surface (sound absorption path) provided on the surface of the second sound insulation wall on the eardrum side
41 ear canal, ear canal wall 42 tympanic membrane 51 first sound absorbing space 52 second sound absorbing space

Claims (6)

An earpiece comprising a cylindrical sound guide opening that guides output sound from an earphone speaker and a plurality of sound insulation walls provided around the sound guide opening, and inserted into the ear canal,
One or a plurality of first sound insulation walls that shield as much as possible the sound from outside into the ear canal and inside the ear canal when inserted into the ear canal,
A sound insulation wall body different from one or a plurality of the first sound insulation wall bodies provided at a position closer to the eardrum than the first sound insulation wall body;
Consists of
An earpiece in which a sound absorbing path is provided on a surface of the second sound insulating wall disposed on the eardrum side of the second sound insulating wall disposed at least at a position closest to the eardrum among the sound insulating walls different from the first sound insulating wall. The earpiece according to claim 1, wherein a sound absorbing path is provided on a surface on the eardrum side of all the sound insulating walls except the first sound insulating wall. 3. The sound absorbing path is a through-hole penetrating from the surface of the sound insulating wall body to the back surface of the sound insulating wall body, or the sound absorbing path is a non-penetrating concave surface that does not penetrate from the surface of the sound insulating wall body to the back surface of the sound insulating wall body. Earpiece as described in. The earpiece according to claim 3, wherein the sound absorption path is arranged symmetrically with respect to the sound guide opening. The earpiece according to claim 3 or 4, wherein a shape of the through hole constituting the sound absorption path is a circle, an ellipse, a triangle, a quadrangle, or a cut shape. The earpiece according to claim 3 or 4, wherein the arrangement of the non-penetrating concave surfaces constituting the sound absorption path is arranged radially around the sound guide opening.

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