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WO2015115322A1 - Ear plug - Google Patents

Ear plug Download PDF

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Publication number
WO2015115322A1
WO2015115322A1 PCT/JP2015/051820 JP2015051820W WO2015115322A1 WO 2015115322 A1 WO2015115322 A1 WO 2015115322A1 JP 2015051820 W JP2015051820 W JP 2015051820W WO 2015115322 A1 WO2015115322 A1 WO 2015115322A1
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WIPO (PCT)
Prior art keywords
space
insertion end
earplug
chamber
partition wall
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Ceased
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PCT/JP2015/051820
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French (fr)
Japanese (ja)
Inventor
芳晴 永松
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DKSH Japan KK
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DKSH Japan KK
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Publication date
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Publication of WO2015115322A1 publication Critical patent/WO2015115322A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/08—Protective devices for the ears internal, e.g. earplugs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/08—Protective devices for the ears internal, e.g. earplugs
    • A61F11/085—Protective devices for the ears internal, e.g. earplugs including an inner channel

Definitions

  • the present invention relates to an earplug that can alleviate ear pain due to a rapid change in atmospheric pressure.
  • the air pressure inside the aircraft cabin is adjusted to maintain a constant air pressure regardless of altitude, but changes in air pressure during takeoff and landing are inevitable. For this reason, many passengers complain of ear pain when taking off and landing on an airplane.
  • the cause is considered to be that the pressure adjustment function of the ear cannot follow the relative pressure change between the middle ear and the external environment, that is, the cabin.
  • the problem to be solved by the present invention is to provide an earplug that can alleviate ear pain due to a sudden change in atmospheric pressure during airplane takeoff and landing.
  • the earplug according to the present invention can be inserted into the external auditory canal and has an earplug body in which a communication space for communicating the insertion end and the anti-insertion end is formed.
  • a partition partitioning into a space on the insertion end side, and the partition bulges toward a space side having a lower pressure due to a relative pressure difference between the space on the insertion end side and the space on the anti-insertion end side.
  • the communication space is gradually reduced in diameter from the opposite insertion end to the vicinity of the partition wall.
  • the communication space includes a chamber, a first space that communicates the chamber and the insertion end, and a second space that communicates the chamber and the anti-insertion end, and the partition is provided inside the chamber.
  • the second space preferably has a diameter gradually reduced from the opposite insertion end toward the chamber.
  • the partition wall has a frame that is airtightly attached to the inner wall of the chamber over the entire circumference, and an elastic film that is airtightly held inside the frame.
  • the earplug body has a contact structure that contacts the inner wall of the ear canal without gaps over the entire circumference.
  • the contact structure is a plurality of flange portions in which a radially outward projecting amount gradually increases from the insertion end to the counter-insertion end.
  • an earplug that can relieve ear pain due to a sudden change in atmospheric pressure during airplane takeoff and landing with a simple configuration.
  • Sectional drawing which illustrates embodiment of the earplug of this invention
  • Sectional drawing which shows the mounting state of the earplug shown in FIG.
  • the earplug 1 includes an earplug 2 inserted into the ear canal H, and a communication space 5 communicating from the insertion end 3 of the earplug 2 to the outer ear canal H to the non-insertion end 4. And a partition wall 6 that partitions the communication space 5 into the spaces 5a and 5c1 at the insertion end 3 and the spaces 5b and 5c2 at the opposite insertion end 4 side.
  • the earplug body 2 has four (multiple) flange portions 9, 10, 11, and 12.
  • the flange portion 9-12 is formed flexibly, and is deformed following the inner wall of the ear canal H when the ear plug 1 is inserted into the ear canal H as shown in FIG. At least one of the quadruple flange portions 9-12 contacts the inner wall of the external auditory canal H without any gap, so that the external auditory canal H is airtightly closed.
  • the earplug 2 includes an insertion portion 2A provided with a flange portion 9-12, a knob portion 2B that is a portion to be picked by a finger when the earplug 1 is inserted into the external ear canal H, and a pinch with the insertion portion 2B. It is comprised by the intermediate part 2C located in the middle with the part 2B.
  • the communication space 5 is opened at the insertion end 3 and the non-insertion end 4 of the earplug 2.
  • the diameter of the opening at the non-insertion end 4 is smaller than the diameter of the opening at the insertion end 3.
  • the communication space 5 includes a space 5a (first space) in the insertion portion 2A, a space 5b (chamber) in the knob portion 2B, and a space 5c (second space) in the intermediate portion 2C.
  • the space 5a in the insertion portion 2A communicates from the insertion end 3 to the space 5c in the intermediate portion 2C.
  • the space 5a in the insertion portion 2A has the same diameter over the entire length.
  • the space 5b in the knob portion 2B communicates with the space 5c in the intermediate portion 2C from the anti-insertion end 4.
  • the space 5a in the knob portion 2B is gradually reduced in diameter as it approaches the space 5c in the intermediate portion 2C from the anti-insertion end 4.
  • the inner diameter of the space 5c in the intermediate part 2C is larger than the inner diameter of the space 5a in the insertion part 2A.
  • the space 5c in the intermediate portion 2C is partitioned by a partition wall 6 into a space 5c1 on the insertion end 3 side and a space 5c2 on the opposite insertion end 4 side.
  • the partition wall 6 includes an annular frame 6A that is airtightly attached to the inner wall of the intermediate portion 2C over the entire circumference, and a disk-like elastic film 6B (elastic body) that is airtightly held on the frame 6A over the entire circumference. ).
  • the elastic membrane 6B swells to the space side where the atmospheric pressure is relatively low due to the difference in atmospheric pressure between the spaces 5a, 5c1 on the insertion end 3 side and the spaces 5b, 5c2 on the opposite insertion end 4 side.
  • FIG. 2A shows the state of the elastic membrane 6B when the pressure in the spaces 5b and 5c2 on the side opposite to the insertion end 4 is lower than the pressure in the spaces 5a and 5c1 on the insertion end 3 side.
  • FIG. 2B shows a state of the elastic film 6B when the pressure in the spaces 5b and 5c2 on the side opposite to the insertion end 4 is higher than the pressure in the spaces 5a and 5c1 on the insertion end 3 side.
  • the earplug 1 configured as described above When the earplug 1 configured as described above is inserted into the ear canal H, at least one of the flange portions 9-12 of the earplug body 2 contacts the inner wall of the ear canal H without any gap, and the ear canal H is It is in a state of being airtightly blocked.
  • the communication space 5 of the ear plug 2 is partitioned by the partition wall 6 into spaces 5a, 5c1 on the insertion end 3 side and spaces 5b, 5c2 on the anti-insertion end 4 side, and the space 5b in the knob portion 2B Since the diameter gradually decreases from the non-insertion end 4 toward the space 5c in the intermediate portion 2C, even if the air pressure in the passenger cabin, that is, the outer space of the earplug 1 changes suddenly during airplane takeoff and landing, etc. The pressure in the space 5a, 5c1 on the end 3 side does not change abruptly.
  • the air pressure in the outer space of the earplug 1 drops rapidly during takeoff, but the diameter gradually decreases as the space 5b in the knob portion 2B approaches the space 5c in the intermediate portion 2C from the anti-insertion end 4. Accordingly, the rate of decrease in the atmospheric pressure in the space 5c2 on the side opposite to the insertion end 4 with respect to the partition wall 6 in the intermediate portion 2C is slower than that in the external space of the earplug 1. Then, as the atmospheric pressure in the space 5c2 decreases, the elastic film 6B of the partition wall 6 slowly swells to the external space side against the elastic force (FIG. 2A). The decreasing speed of the atmospheric pressure in the spaces 5a and 5c1 is further decelerated.
  • the pressure inside the ear is gradually adjusted by the air flowing into the space between the partition wall 6 and the eardrum from the tracheopharyngeal mouth or the like, and the ear Ear pain due to a rapid drop in the air pressure in the external space of the stopper 1 is alleviated.
  • the air pressure in the outer space of the earplug 1 rapidly increases during landing, but the diameter gradually decreases as the space 5b in the knob portion 2B approaches the space 5c in the intermediate portion 2C from the anti-insertion end 4.
  • the rising speed of the atmospheric pressure in the space 5c2 on the side opposite to the insertion end 4 from the partition wall 6 of the intermediate part 2C is slower than that in the external space of the earplug 1.
  • the elastic film 6B of the partition wall 6 slowly swells toward the space 5a, 5c1 side on the insertion end 3 side against the elastic force (FIG. 2B).
  • the rising speed of the atmospheric pressure in the space 5a, 5c1 on the insertion end 3 side is further decelerated.
  • the pressure inside the ear is gradually adjusted by the outflow of air from the space between the partition wall 6 and the eardrum to the tracheopharyngeal mouth or the like by reducing the rising speed of the pressure in the spaces 5a and 5c1 on the insertion end 3 side.
  • the ear pain due to the rapid increase of the air pressure in the external space of the earplug 1 is alleviated.
  • the earplug 2 is expressed as an integrally molded product, but the earplug 2 may actually be composed of a plurality of parts.
  • the earplugs having the quadruple flange portions 9-12 are exemplified, but the number of flange portions may be two, three, or five or more.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Acoustics & Sound (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Headphones And Earphones (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

The ear plug (1) comprises: an ear plug body (2), which can be inserted in the external auditory canal (H) and in which a communicating space (5) for connecting the inserted end (3) with the non-inserted end (4) is formed; and a partition (6) for partitioning the communicating space (5) into inserted end (3)-side spaces (5a, 5c1) and non-inserted end (4)-side spaces (5b, 5c2). The partition (6) swells toward the spaces with lower air pressure as a result of differences in relative air pressure between the inserted end (3)-side spaces (5a, 5c1) and the non-inserted end (4)-side spaces (5b, 5c2). The communicating space (5) slowly decreases in diameter from the non-inserted end (4) to the partition (6).

Description

耳栓Earplug

　本発明は、急激な気圧変化による耳の痛みを緩和し得る耳栓に関する。 The present invention relates to an earplug that can alleviate ear pain due to a rapid change in atmospheric pressure.

　飛行機の客室機内は、高度によらず気圧を一定に維持するべく気圧調整がなされているが、離着陸時の気圧の変化は避けられない。このため、飛行機の離着陸時に耳の痛みを訴える乗客が多い。その原因は、中耳と外部環境すなわち機内との相対的な気圧変化に、耳の持つ気圧調整機能が追従できないためであると考えられている。 The air pressure inside the aircraft cabin is adjusted to maintain a constant air pressure regardless of altitude, but changes in air pressure during takeoff and landing are inevitable. For this reason, many passengers complain of ear pain when taking off and landing on an airplane. The cause is considered to be that the pressure adjustment function of the ear cannot follow the relative pressure change between the middle ear and the external environment, that is, the cabin.

特開平０７－１００１６３号Japanese Patent Laid-Open No. 07-100003 特表平１１－５１３２６１号Special table Hei 11-513261

　本発明が解決しようとする課題は、飛行機の離着陸時等における急激な気圧変化による耳の痛みを緩和し得る耳栓を提供することにある。 The problem to be solved by the present invention is to provide an earplug that can alleviate ear pain due to a sudden change in atmospheric pressure during airplane takeoff and landing.

　本発明に係る耳栓は、外耳道に挿入可能であり、且つ、挿入端と反挿入端を連通させる連通空間が形成された耳栓体と、前記連通空間を前記挿入端側の空間と前記反挿入端側の空間とに仕切る隔壁とを有し、前記隔壁は、前記挿入端側の空間と前記反挿入端側の空間との相対的な気圧差により、気圧が低い方の空間側に膨らみ、前記連通空間は、前記反挿入端から前記隔壁の近傍にかけて徐々に縮径している。 The earplug according to the present invention can be inserted into the external auditory canal and has an earplug body in which a communication space for communicating the insertion end and the anti-insertion end is formed. A partition partitioning into a space on the insertion end side, and the partition bulges toward a space side having a lower pressure due to a relative pressure difference between the space on the insertion end side and the space on the anti-insertion end side. The communication space is gradually reduced in diameter from the opposite insertion end to the vicinity of the partition wall.

　また、前記連通空間は、室、前記室と前記挿入端を連通させる第１空間、及び前記室と前記反挿入端を連通させる第２空間を含み、前記隔壁は、前記室の内部に設けられ、前記第２空間は、前記反挿入端から前記室に向かって徐々に縮径していることが好ましい。 The communication space includes a chamber, a first space that communicates the chamber and the insertion end, and a second space that communicates the chamber and the anti-insertion end, and the partition is provided inside the chamber. The second space preferably has a diameter gradually reduced from the opposite insertion end toward the chamber.

　また、前記隔壁は、前記室の内壁に全周にわたって気密に取り付けられたフレームと、前記フレームの内部に気密に保持された弾性膜とを有することが好ましい。 Further, it is preferable that the partition wall has a frame that is airtightly attached to the inner wall of the chamber over the entire circumference, and an elastic film that is airtightly held inside the frame.

　また、前記耳栓体は、前記外耳道の内壁に全周に亘って隙間なく接触する接触構造を有することが好ましい。 Moreover, it is preferable that the earplug body has a contact structure that contacts the inner wall of the ear canal without gaps over the entire circumference.

　また、前記接触構造は、径方向外方への突出量が前記挿入端から前記反挿入端にかけて徐々に増加する複数連のフランジ部であることが好ましい。 Further, it is preferable that the contact structure is a plurality of flange portions in which a radially outward projecting amount gradually increases from the insertion end to the counter-insertion end.

　本発明によれば、飛行機の離着陸時等における急激な気圧変化による耳の痛みを緩和し得る耳栓を簡単な構成で実現することができる。 According to the present invention, it is possible to realize an earplug that can relieve ear pain due to a sudden change in atmospheric pressure during airplane takeoff and landing with a simple configuration.

本発明の耳栓の実施形態を例示する断面図Sectional drawing which illustrates embodiment of the earplug of this invention 図１に示す耳栓の要部断面図Cross section of the main part of the earplug shown in FIG. 図１に示す耳栓の装着状態を示す断面図Sectional drawing which shows the mounting state of the earplug shown in FIG.

　以下、本発明を実施するための形態について添付図面を参照して説明する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

　図１及び図３に示すように、耳栓１は、外耳道Ｈに挿入される耳栓体２と、耳栓体２の外耳道Ｈへの挿入端３から反挿入端４に連通した連通空間５と、連通空間５を挿入端３の空間５ａ、５ｃ１と反挿入端４側の空間５ｂ、５ｃ２とに仕切る隔壁６と、を有している。 As shown in FIGS. 1 and 3, the earplug 1 includes an earplug 2 inserted into the ear canal H, and a communication space 5 communicating from the insertion end 3 of the earplug 2 to the outer ear canal H to the non-insertion end 4. And a partition wall 6 that partitions the communication space 5 into the spaces 5a and 5c1 at the insertion end 3 and the spaces 5b and 5c2 at the opposite insertion end 4 side.

　耳栓体２は、四重（複数連）のフランジ部９、１０、１１、１２を有している。
　フランジ部９－１２は、柔軟に形成されており、図３に示すように、耳栓１を外耳道Ｈに挿入すると、外耳道Ｈの内壁に倣って変形する。四重のフランジ部９－１２のうち少なくとも一つが外耳道Ｈの内壁に全周に亘って隙間なく接触することにより、外耳道Ｈは気密に塞がれた状態になる。 The earplug body 2 has four (multiple) flange portions 9, 10, 11, and 12.
The flange portion 9-12 is formed flexibly, and is deformed following the inner wall of the ear canal H when the ear plug 1 is inserted into the ear canal H as shown in FIG. At least one of the quadruple flange portions 9-12 contacts the inner wall of the external auditory canal H without any gap, so that the external auditory canal H is airtightly closed.

　耳栓体２は、フランジ部９－１２が設けられている挿入部２Ａと、耳栓１を外耳道Ｈに挿入する際指で摘まむ部分となる摘まみ部２Ｂと、挿入部２Ｂと摘まみ部２Ｂとの中間に位置する中間部２Ｃとで構成される。 The earplug 2 includes an insertion portion 2A provided with a flange portion 9-12, a knob portion 2B that is a portion to be picked by a finger when the earplug 1 is inserted into the external ear canal H, and a pinch with the insertion portion 2B. It is comprised by the intermediate part 2C located in the middle with the part 2B.

　連通空間５は、耳栓体２の挿入端３及び反挿入端４にてそれぞれ開口してなる。反挿入端４における開口の径寸法は挿入端３における開口の径寸法よりも小さい。連通空間５は、挿入部２Ａ内の空間５ａ（第１空間）と、摘まみ部２Ｂ内の空間５ｂ（室）と、中間部２Ｃ内の空間５ｃ（第２空間）とを含んで構成される。 The communication space 5 is opened at the insertion end 3 and the non-insertion end 4 of the earplug 2. The diameter of the opening at the non-insertion end 4 is smaller than the diameter of the opening at the insertion end 3. The communication space 5 includes a space 5a (first space) in the insertion portion 2A, a space 5b (chamber) in the knob portion 2B, and a space 5c (second space) in the intermediate portion 2C. The

　挿入部２Ａ内の空間５ａは、挿入端３から中間部２Ｃ内の空間５ｃに連通している。挿入部２Ａ内の空間５ａは全長に亘って同一径である。 The space 5a in the insertion portion 2A communicates from the insertion end 3 to the space 5c in the intermediate portion 2C. The space 5a in the insertion portion 2A has the same diameter over the entire length.

　摘まみ部２Ｂ内の空間５ｂは、反挿入端４から中間部２Ｃ内の空間５ｃに連通している。摘まみ部２Ｂ内の空間５ａは、反挿入端４から中間部２Ｃ内の空間５ｃに近づくにつれて徐々に縮径している。 The space 5b in the knob portion 2B communicates with the space 5c in the intermediate portion 2C from the anti-insertion end 4. The space 5a in the knob portion 2B is gradually reduced in diameter as it approaches the space 5c in the intermediate portion 2C from the anti-insertion end 4.

　中間部２Ｃ内の空間５ｃの内径寸法は、挿入部２Ａ内の空間５ａの内径寸法よりも大きい。中間部２Ｃ内の空間５ｃは、隔壁６で挿入端３側の空間５ｃ１と反挿入端４側の空間５ｃ２とに気密に仕切られている。 The inner diameter of the space 5c in the intermediate part 2C is larger than the inner diameter of the space 5a in the insertion part 2A. The space 5c in the intermediate portion 2C is partitioned by a partition wall 6 into a space 5c1 on the insertion end 3 side and a space 5c2 on the opposite insertion end 4 side.

　隔壁６は、中間部２Ｃの内壁に全周に亘って気密に取り付けられた環状のフレーム６Ａと、当該フレーム６Ａに全周に亘って気密に保持された円板状の弾性膜６Ｂ（弾性体）とからなる。弾性膜６Ｂは、挿入端３側の空間５ａ、５ｃ１と反挿入端４側の空間５ｂ、５ｃ２との間の気圧差により、気圧が相対的に低い空間側に膨らむ。図２（ａ）は、反挿入端４側の空間５ｂ、５ｃ２の気圧が挿入端３側の空間５ａ、５ｃ１の気圧よりも低いときの弾性膜６Ｂの状態を示している。図２（ｂ）は、反挿入端４側の空間５ｂ、５ｃ２の気圧が挿入端３側の空間５ａ、５ｃ１の気圧よりも高いときの弾性膜６Ｂの状態を示している。 The partition wall 6 includes an annular frame 6A that is airtightly attached to the inner wall of the intermediate portion 2C over the entire circumference, and a disk-like elastic film 6B (elastic body) that is airtightly held on the frame 6A over the entire circumference. ). The elastic membrane 6B swells to the space side where the atmospheric pressure is relatively low due to the difference in atmospheric pressure between the spaces 5a, 5c1 on the insertion end 3 side and the spaces 5b, 5c2 on the opposite insertion end 4 side. FIG. 2A shows the state of the elastic membrane 6B when the pressure in the spaces 5b and 5c2 on the side opposite to the insertion end 4 is lower than the pressure in the spaces 5a and 5c1 on the insertion end 3 side. FIG. 2B shows a state of the elastic film 6B when the pressure in the spaces 5b and 5c2 on the side opposite to the insertion end 4 is higher than the pressure in the spaces 5a and 5c1 on the insertion end 3 side.

　上記のように構成された耳栓１を外耳道Ｈに挿入すると、耳栓体２のフランジ部９－１２のうち少なくとも一つが外耳道Ｈの内壁に全周に亘って隙間なく接触し、外耳道Ｈは気密に塞がれた状態になる。耳栓体２の連通空間５が隔壁６により挿入端３側の空間５ａ、５ｃ１と反挿入端４側の空間５ｂ、５ｃ２とに気密に仕切られ、且つ、摘まみ部２Ｂ内の空間５ｂが反挿入端４から中間部２Ｃ内の空間５ｃに近づくにつれて徐々に縮径しているため、飛行機の離着陸時等に客室機内すなわち耳栓１の外部空間の気圧が急激に変化しても、挿入端３側の空間５ａ、５ｃ１の気圧は急激には変化しない。 When the earplug 1 configured as described above is inserted into the ear canal H, at least one of the flange portions 9-12 of the earplug body 2 contacts the inner wall of the ear canal H without any gap, and the ear canal H is It is in a state of being airtightly blocked. The communication space 5 of the ear plug 2 is partitioned by the partition wall 6 into spaces 5a, 5c1 on the insertion end 3 side and spaces 5b, 5c2 on the anti-insertion end 4 side, and the space 5b in the knob portion 2B Since the diameter gradually decreases from the non-insertion end 4 toward the space 5c in the intermediate portion 2C, even if the air pressure in the passenger cabin, that is, the outer space of the earplug 1 changes suddenly during airplane takeoff and landing, etc. The pressure in the space 5a, 5c1 on the end 3 side does not change abruptly.

　たとえば、離陸時には耳栓１の外部空間の気圧は急激に低下していくが、摘まみ部２Ｂ内の空間５ｂが反挿入端４から中間部２Ｃ内の空間５ｃに近づくにつれて徐々に縮径していることにより、中間部２Ｃの隔壁６よりも反挿入端４側の空間５ｃ２の気圧の低下速度は耳栓１の外部空間のそれよりも遅くなる。そして、当該空間５ｃ２の気圧の低下に伴って、隔壁６の弾性膜６Ｂがその弾性力に抗しつつゆっくりと外部空間側に膨らんでいくため（図２（Ａ））、挿入端３側の空間５ａ、５ｃ１の気圧の低下速度は更に減速される。挿入端３側の空間５ａ、５ｃ１の気圧の低下速度が減速されることにより、気管咽頭口等から隔壁６と鼓膜との間の空間に流れ込む空気によって耳内部の気圧が徐々に調整され、耳栓１の外部空間の気圧の急激な低下による耳の痛みが緩和される。 For example, the air pressure in the outer space of the earplug 1 drops rapidly during takeoff, but the diameter gradually decreases as the space 5b in the knob portion 2B approaches the space 5c in the intermediate portion 2C from the anti-insertion end 4. Accordingly, the rate of decrease in the atmospheric pressure in the space 5c2 on the side opposite to the insertion end 4 with respect to the partition wall 6 in the intermediate portion 2C is slower than that in the external space of the earplug 1. Then, as the atmospheric pressure in the space 5c2 decreases, the elastic film 6B of the partition wall 6 slowly swells to the external space side against the elastic force (FIG. 2A). The decreasing speed of the atmospheric pressure in the spaces 5a and 5c1 is further decelerated. By reducing the rate of pressure reduction in the spaces 5a and 5c1 on the insertion end 3 side, the pressure inside the ear is gradually adjusted by the air flowing into the space between the partition wall 6 and the eardrum from the tracheopharyngeal mouth or the like, and the ear Ear pain due to a rapid drop in the air pressure in the external space of the stopper 1 is alleviated.

　また、着陸時には耳栓１の外部空間の気圧は急激に高くなるが、摘まみ部２Ｂ内の空間５ｂが反挿入端４から中間部２Ｃ内の空間５ｃに近づくにつれて徐々に縮径していることにより、中間部２Ｃの隔壁６よりも反挿入端４側の空間５ｃ２の気圧の上昇速度は耳栓１の外部空間のそれよりも遅くなる。そして、当該空間５ｃ２の気圧の上昇に伴って、隔壁６の弾性膜６Ｂがその弾性力に抗しつつゆっくりと挿入端３側の空間５ａ、５ｃ１側に膨らんでいくため（図２（Ｂ））、挿入端３側の空間５ａ、５ｃ１の気圧の上昇速度は更に減速される。挿入端３側の空間５ａ、５ｃ１の気圧の上昇速度が減速されることにより、隔壁６と鼓膜との間の空間から気管咽頭口等への空気の流出によって耳内部の気圧が徐々に調整され、耳栓１の外部空間の気圧の急激な上昇による耳の痛みが緩和される。 Further, the air pressure in the outer space of the earplug 1 rapidly increases during landing, but the diameter gradually decreases as the space 5b in the knob portion 2B approaches the space 5c in the intermediate portion 2C from the anti-insertion end 4. Thereby, the rising speed of the atmospheric pressure in the space 5c2 on the side opposite to the insertion end 4 from the partition wall 6 of the intermediate part 2C is slower than that in the external space of the earplug 1. Then, as the atmospheric pressure in the space 5c2 rises, the elastic film 6B of the partition wall 6 slowly swells toward the space 5a, 5c1 side on the insertion end 3 side against the elastic force (FIG. 2B). ), The rising speed of the atmospheric pressure in the space 5a, 5c1 on the insertion end 3 side is further decelerated. The pressure inside the ear is gradually adjusted by the outflow of air from the space between the partition wall 6 and the eardrum to the tracheopharyngeal mouth or the like by reducing the rising speed of the pressure in the spaces 5a and 5c1 on the insertion end 3 side. The ear pain due to the rapid increase of the air pressure in the external space of the earplug 1 is alleviated.

　なお、図１及び図３においては、耳栓体２が一体成型品であるように表現されているが、耳栓体２は実際には複数のパーツで構成されてもよい。 In FIGS. 1 and 3, the earplug 2 is expressed as an integrally molded product, but the earplug 2 may actually be composed of a plurality of parts.

　また、上記の実施形態では、四重のフランジ部９－１２を有する耳栓を例示したが、フランジ部の数は２又は３でも５以上でもよい。 In the above embodiment, the earplugs having the quadruple flange portions 9-12 are exemplified, but the number of flange portions may be two, three, or five or more.

　１　耳栓
　２　耳栓体
　２Ａ　挿入部
　２Ｂ　摘まみ部
　２Ｃ　中間部
　３　挿入端
　４　反挿入端
　５　連通空間
　５ａ　空間（第１空間）
　５ｂ　空間（室）
　５ｃ　空間（第２空間）
　５ｃ１　空間
　５ｃ２　空間
　６　隔壁
　６Ａ　フレーム
　６Ｂ　弾性膜
　９－１２　フランジ部
　Ｈ　外耳道 DESCRIPTION OF SYMBOLS 1 Ear plug 2 Ear plug body 2A Insertion part 2B Knob part 2C Intermediate part 3 Insertion end 4 Anti-insertion end 5 Communication space 5a Space (1st space)
5b Space (room)
5c space (second space)
5c1 space 5c2 space 6 partition wall 6A frame 6B elastic membrane 9-12 flange part H ear canal

Claims (5)

　外耳道（Ｈ）に挿入可能であり、且つ、挿入端（３）と反挿入端（４）を連通させる連通空間（５）が形成された耳栓体（２）と、
　前記連通空間（５）を前記挿入端（３）側の空間（５ａ、５ｃ１）と前記反挿入端（４）側の空間（５ｂ、５ｃ２）とに仕切る隔壁（６）とを有し、
　前記隔壁（６）は、前記挿入端（３）側の空間（５ａ、５ｃ１）と前記反挿入端（４）側の空間（５ｂ、５ｃ２）との相対的な気圧差により、気圧が低い方の空間側に膨らみ、
　前記連通空間（５）は、前記反挿入端（３）から前記隔壁（６）の近傍にかけて徐々に縮径している、耳栓（１）。 An earplug (2) that can be inserted into the ear canal (H) and that has a communication space (5) that allows the insertion end (3) and the non-insertion end (4) to communicate with each other;
A partition wall (6) that partitions the communication space (5) into a space (5a, 5c1) on the insertion end (3) side and a space (5b, 5c2) on the anti-insertion end (4) side,
The partition (6) has a lower atmospheric pressure due to a relative atmospheric pressure difference between the space (5a, 5c1) on the insertion end (3) side and the space (5b, 5c2) on the opposite insertion end (4) side. Swell to the space side of
The communication space (5) is an earplug (1) that is gradually reduced in diameter from the opposite insertion end (3) to the vicinity of the partition wall (6). 　前記連通空間（５）は、室（５ｃ）、前記室（５ｃ）と前記挿入端（３）を連通させる第１空間（５ａ）、及び前記室（５ｃ）と前記反挿入端（４）を連通させる第２空間（５ｂ）を含み、
　前記隔壁（６）は、前記室（５ｃ）の内部に設けられ、
　前記第２空間（５ｂ）は、前記反挿入端（３）から前記室（５）に向かって徐々に縮径している、請求項１に記載の耳栓（１）。 The communication space (5) includes a chamber (5c), a first space (5a) for communicating the chamber (5c) and the insertion end (3), and the chamber (5c) and the anti-insertion end (4). Including a second space (5b) for communication;
The partition wall (6) is provided inside the chamber (5c),
The earplug (1) according to claim 1, wherein the second space (5b) is gradually reduced in diameter from the opposite insertion end (3) toward the chamber (5). 　前記隔壁（６）は、前記室（５）の内壁に全周にわたって気密に取り付けられたフレーム（６Ａ）と、前記フレーム（６Ａ）の内部に気密に保持された弾性膜（６Ｂ）とを有する、請求項２に記載の耳栓（１）。 The partition wall (6) includes a frame (6A) that is airtightly attached to the inner wall of the chamber (5) over the entire circumference, and an elastic membrane (6B) that is airtightly held inside the frame (6A). The earplug (1) according to claim 2. 　前記耳栓体（２）は、前記外耳道（Ｈ）の内壁に全周に亘って隙間なく接触する接触構造を有する、請求項１－３のいずれか１項に記載の耳栓（１）。 The earplug (1) according to any one of claims 1 to 3, wherein the earplug body (2) has a contact structure that contacts the inner wall of the ear canal (H) over the entire circumference without any gap. 　前記接触構造は、径方向外方への突出量が前記挿入端（３）から前記反挿入端（４）にかけて徐々に増加する複数連のフランジ部（９－１２）である、請求項４に記載の耳栓（１）。 The contact structure is a plurality of flange portions (9-12) in which a radially outward projecting amount gradually increases from the insertion end (3) to the counter-insertion end (4). Earplug (1) as described.
PCT/JP2015/051820 2014-01-29 2015-01-23 Ear plug Ceased WO2015115322A1 (en)

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CN105012074A (en) * 2015-08-24 2015-11-04 青岛小微声学科技有限公司 Earplugs

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JPS5327596B2 (en) * 1972-07-17 1978-08-09
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US5819745A (en) * 1994-08-16 1998-10-13 House Ear Institute Pressure-regulating ear plug
US20030159878A1 (en) * 2000-04-06 2003-08-28 Jorgen Hakansson Earplug
EP2055276A2 (en) * 2007-11-02 2009-05-06 Janßen, Dirk Hearing protection
US20130126262A1 (en) * 2009-12-22 2013-05-23 Dynamic Ear Company B.V. Ear protector with a sound damping filter, sound damping filter for such an ear protector as well as method for manufacturing a sound damping filter for such an ear protector

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Publication number Priority date Publication date Assignee Title
JPS5327596B2 (en) * 1972-07-17 1978-08-09
JPH07100163A (en) * 1993-10-06 1995-04-18 Shimizu Corp Earplug
US5819745A (en) * 1994-08-16 1998-10-13 House Ear Institute Pressure-regulating ear plug
US20030159878A1 (en) * 2000-04-06 2003-08-28 Jorgen Hakansson Earplug
EP2055276A2 (en) * 2007-11-02 2009-05-06 Janßen, Dirk Hearing protection
US20130126262A1 (en) * 2009-12-22 2013-05-23 Dynamic Ear Company B.V. Ear protector with a sound damping filter, sound damping filter for such an ear protector as well as method for manufacturing a sound damping filter for such an ear protector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2635334A (en) * 2023-11-07 2025-05-14 Uk Technical Applications Ltd Ear protection device

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