WO2007086793A1 - Ear cup - Google Patents

Ear cup Download PDF

Info

Publication number
WO2007086793A1
WO2007086793A1 PCT/SE2007/000060 SE2007000060W WO2007086793A1 WO 2007086793 A1 WO2007086793 A1 WO 2007086793A1 SE 2007000060 W SE2007000060 W SE 2007000060W WO 2007086793 A1 WO2007086793 A1 WO 2007086793A1
Authority
WO
WIPO (PCT)
Prior art keywords
cup
sealing
ear
sealing portion
cup portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2007/000060
Other languages
French (fr)
Inventor
Joakim Birgersson
Anders Roos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MSA Sordin AB
Original Assignee
MSA Sordin AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MSA Sordin AB filed Critical MSA Sordin AB
Priority to CN2007800022422A priority Critical patent/CN101370452B/en
Priority to EP07709286.4A priority patent/EP1981456B1/en
Priority to US12/087,361 priority patent/US8360068B2/en
Publication of WO2007086793A1 publication Critical patent/WO2007086793A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs

Definitions

  • the present invention relates to an ear cup, which is intended to be used in a hearing protector unit that has two ear cups and a means for fastening the hearing protector unit to a wearer's head, the means being connected to the ear cups, the ear cup having a cup portion with a support surface as well as a sealing device, placed against the support surface of the cup portion for bearing against a wearer' s head in an area around an ear of the wearer.
  • the sealing device is produced from a frame of rigid plastic, a ring of foam plastic and a PVC-film.
  • the ring is placed on the frame, the PVC-film is placed on the ring and is then welded on the frame such that an indivisible unit is formed.
  • the frame of the sealing device is fastened onto the cup portion of the ear cup.
  • the frame and the cup portion are both produced from rigid plastic, whereby rigid material bears against rigid material. If a surface of the frame that bears against the support surface of the cup portion has a shape that differs from the shape of the support surface, this will result in a poor sealing and, thereby, an unsatisfactory noise attenuation.
  • a drawback with such a sealing device is thus that it may allow proportionally much noise to pass through, such that the noise attenuating effect is impaired.
  • the object of the invention is therefore to provide an ear cup that is designed so as to eliminate the above drawback, i.e. such that a good sealing is achieved between the cup portion and the sealing device, even if the surface of the sealing device that bears against the support surface of the cup portion has a shape that differs from the shape of the support surface.
  • an ear cup of the kind described above which is characterized in that the sealing device comprises a sealing portion of a soft material, such as rubber, which has a peripherally extending circumference slot, and which in its periphery area bears against said support surface with the opening of the circumference slot directed towards the cup portion, a sound-attenuating ring, which is placed in the circumference slot of the sealing portion, and a clamping ring of a rigid material, such as rigid plastic, which is situated in the circumference slot of the sealing portion to expand the sealing portion produced from soft material, and in that the sealing portion is provided with a peripherally extending flange, which is introduced in the cup portion such that it bears against the inner side of the cup portion, whereby the clamping ring bears against the flange and presses the flange against the inner side of the cup portion for fastening the sealing device to the cup portion.
  • the sound-attenuating ring can be produced in one piece together with the sealing portion and from the same soft material
  • Fig. 1 is a sectional view showing an ear cup according to the invention.
  • Fig. 2 is an exploded view showing parts of a sealing device of an ear cup according to the invention.
  • Fig. 3 is a sectional view showing a sealing portion of the sealing device.
  • a hearing protector unit has two ear cups 1, from which only one is shown in fig. 1.
  • the ear cups 1 are connected to each other by a headband 2 for fastening the hearing protector unit on a wearer's head.
  • the two ear cups 1 can have, instead of the headband 2, a mounting each, which is adapted to be fixed to a helmet or the like, to be worn by the user.
  • Each of the ear cups 1 has a cup portion 1' , which preferably is produced from rigid plastic.
  • the cup portion 1' shown in fig. 1 has a peripherally extending support surface 3, against which a sealing device 4 attached to the cup portion bears.
  • the sealing device 4 is adapted to bear against the wearer' s head in the area around one of the wearer's ears.
  • the shown sealing device 4 consists of three separate parts, namely a sealing portion 5, a sound- attenuating ring 6 and a clamping ring 7 (see fig. 2) .
  • the sealing portion 5 is cup-formed and has a cup opening 5a, a cup bottom 5b and a peripherally extending circumference slot 5c.
  • the cup opening 5a is directed towards the wearer's ear, i.e. away from the cup portion 1' , and the opening of the circumference slot 5c is directed towards the cup portion 1' .
  • holes are punched to facilitate circulation of air.
  • the sealing portion 5 is produced from soft rubber material, such as TPE.
  • the sealing portion 5 is further equipped with a peripherally extending flange 5d that is snapped in the cup portion 1' for fastening the sealing device 4 thereon. Outside the peripherally extending flange 5d, the sealing portion 5 has a peripherally extending bearing surface 5e, which bears against the support surface 3.
  • the sound-attenuating ring 6, which is produced from foam plastic, is situated in the circumference slot 5c of the sealing portion 5, and bears against the bottom of the slot 5c.
  • the thickness of the sound-attenuating ring 6, i.e. its extension in axial direction, can be varied as required.
  • the clamping ring 7 is located in the circumference slot 5c of the sealing portion 5, outside the sound- attenuating ring 6.
  • the clamping ring 7 bears against the flange 5d and expands the sealing portion 5 produced from soft rubber material in order to press the flange 5d against the inner side of the cup portion 1' .
  • the clamping ring 7 holds the sound-attenuating ring 6 in place in the circumference slot 5c of the sealing portion 5.
  • the clamping ring 7 is preferably produced from rigid plastic.
  • the sealing device 4 is formed as one unit, whereby the sound- attenuating ring 6 is produced in one piece with the sealing portion 5 and of the same soft rubber material as the sealing portion and the clamping ring 7 and the sealing portion 5 with the sound-attenuating ring 6 constitute one moulded unit.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Headphones And Earphones (AREA)
  • Gasket Seals (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

An ear cup (1) has a cup portion (I' ) with a support surface (3) , as well as a sealing device (4) , which is placed against the support surface of the cup portion for bearing against a wearer' s head in an area around an ear of the wearer. The sealing device (4) comprises a sealing portion (5) of a soft material, which in its periphery area bears against said support surface (3) , and a clamping ring (7) of a hard material, which expands the sealing portion (5) . The sealing portion (5) is provided with a peripherally extending flange, which is introduced in the cup portion (1') and bears against the inner side of the cup portion, whereby the clamping ring (7) bears against the flange and presses the flange against the inner side of the cup portion (1') for fastening the sealing device (4) to the cup portion (I' ).

Description

EAR CUP
Field of the invention
The present invention relates to an ear cup, which is intended to be used in a hearing protector unit that has two ear cups and a means for fastening the hearing protector unit to a wearer's head, the means being connected to the ear cups, the ear cup having a cup portion with a support surface as well as a sealing device, placed against the support surface of the cup portion for bearing against a wearer' s head in an area around an ear of the wearer.
Background Art
In prior art ear cups of this type, the sealing device is produced from a frame of rigid plastic, a ring of foam plastic and a PVC-film. The ring is placed on the frame, the PVC-film is placed on the ring and is then welded on the frame such that an indivisible unit is formed. The frame of the sealing device is fastened onto the cup portion of the ear cup. The frame and the cup portion are both produced from rigid plastic, whereby rigid material bears against rigid material. If a surface of the frame that bears against the support surface of the cup portion has a shape that differs from the shape of the support surface, this will result in a poor sealing and, thereby, an unsatisfactory noise attenuation. A drawback with such a sealing device is thus that it may allow proportionally much noise to pass through, such that the noise attenuating effect is impaired.
Summary of the Invention
The object of the invention is therefore to provide an ear cup that is designed so as to eliminate the above drawback, i.e. such that a good sealing is achieved between the cup portion and the sealing device, even if the surface of the sealing device that bears against the support surface of the cup portion has a shape that differs from the shape of the support surface. This object is achieved according to the invention by an ear cup of the kind described above, which is characterized in that the sealing device comprises a sealing portion of a soft material, such as rubber, which has a peripherally extending circumference slot, and which in its periphery area bears against said support surface with the opening of the circumference slot directed towards the cup portion, a sound-attenuating ring, which is placed in the circumference slot of the sealing portion, and a clamping ring of a rigid material, such as rigid plastic, which is situated in the circumference slot of the sealing portion to expand the sealing portion produced from soft material, and in that the sealing portion is provided with a peripherally extending flange, which is introduced in the cup portion such that it bears against the inner side of the cup portion, whereby the clamping ring bears against the flange and presses the flange against the inner side of the cup portion for fastening the sealing device to the cup portion. The sound-attenuating ring can be produced in one piece together with the sealing portion and from the same soft material as the sealing portion. For this embodiment, the clamping ring and the sealing portion with the sound-attenuating ring can constitute one moulded unit.
Brief Description of the Drawings
The invention will in the following be described in more detail with reference to the accompanying drawings. Fig. 1 is a sectional view showing an ear cup according to the invention. Fig. 2 is an exploded view showing parts of a sealing device of an ear cup according to the invention.
Fig. 3 is a sectional view showing a sealing portion of the sealing device.
Description of Preferred Embodiments
A hearing protector unit has two ear cups 1, from which only one is shown in fig. 1. The ear cups 1 are connected to each other by a headband 2 for fastening the hearing protector unit on a wearer's head. In an alternative embodiment, the two ear cups 1 can have, instead of the headband 2, a mounting each, which is adapted to be fixed to a helmet or the like, to be worn by the user. Each of the ear cups 1 has a cup portion 1' , which preferably is produced from rigid plastic.
The cup portion 1' shown in fig. 1 has a peripherally extending support surface 3, against which a sealing device 4 attached to the cup portion bears. The sealing device 4 is adapted to bear against the wearer' s head in the area around one of the wearer's ears. The shown sealing device 4 consists of three separate parts, namely a sealing portion 5, a sound- attenuating ring 6 and a clamping ring 7 (see fig. 2) .
From fig. 3 it appears that the sealing portion 5 is cup-formed and has a cup opening 5a, a cup bottom 5b and a peripherally extending circumference slot 5c. The cup opening 5a is directed towards the wearer's ear, i.e. away from the cup portion 1' , and the opening of the circumference slot 5c is directed towards the cup portion 1' . In the cup bottom 5b, holes are punched to facilitate circulation of air. The sealing portion 5 is produced from soft rubber material, such as TPE. The sealing portion 5 is further equipped with a peripherally extending flange 5d that is snapped in the cup portion 1' for fastening the sealing device 4 thereon. Outside the peripherally extending flange 5d, the sealing portion 5 has a peripherally extending bearing surface 5e, which bears against the support surface 3.
The sound-attenuating ring 6, which is produced from foam plastic, is situated in the circumference slot 5c of the sealing portion 5, and bears against the bottom of the slot 5c. The thickness of the sound-attenuating ring 6, i.e. its extension in axial direction, can be varied as required.
The clamping ring 7 is located in the circumference slot 5c of the sealing portion 5, outside the sound- attenuating ring 6. The clamping ring 7 bears against the flange 5d and expands the sealing portion 5 produced from soft rubber material in order to press the flange 5d against the inner side of the cup portion 1' . Moreover, the clamping ring 7 holds the sound-attenuating ring 6 in place in the circumference slot 5c of the sealing portion 5. The clamping ring 7 is preferably produced from rigid plastic.
In a not shown alternative embodiment, the sealing device 4 is formed as one unit, whereby the sound- attenuating ring 6 is produced in one piece with the sealing portion 5 and of the same soft rubber material as the sealing portion and the clamping ring 7 and the sealing portion 5 with the sound-attenuating ring 6 constitute one moulded unit.

Claims

1. Ear cup for use in a hearing protector unit having two ear cups and a means for fastening the hearing protector unit to a wearer' s head, the means being connected to the ear cups, and which ear cup (1) has a cup portion (1') with a support surface (3) as well as a sealing device (4), placed against the support surface of the cup portion and intended to bear against a wearer' s head in an area around an ear of the wearer, characterized in that the sealing device (4) comprises a sealing portion (5) of a soft material, such as rubber, which has a peripherally extending circumference slot (5c) , and which in its periphery area (5e) bears against said support surface (3) with the opening of the circumference slot (5c) directed towards the cup portion (1'), a sound-attenuating ring (6), which is situated in the circumference slot (5c) of the sealing portion, and a clamping ring (7) of a rigid material, such as rigid plastic, which is situated in the circumference slot (5c) of the sealing portion (5) to expand the sealing portion (5) produced from soft material, and that the sealing portion (5) is provided with a peripherally extending flange (5d) , which is introduced in the cup portion (1') such that it bears against the inner side of the cup portion, whereby the clamping ring (7) bears against the flange (5d) and presses the flange against the inner side of the cup portion (1') for fastening the sealing device (4) to the cup portion (1').
2. Ear cup according to claim 1, whereby the sound- attenuating ring (6) is produced in one piece with the sealing portion (5) and from the same soft material as the sealing portion.
3. Ear cup according to claim 2, characterized in that the clamping ring (7) and the sealing portion (5) with the sound-attenuating ring (6) constitute one moulded unit.
PCT/SE2007/000060 2006-01-24 2007-01-23 Ear cup Ceased WO2007086793A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2007800022422A CN101370452B (en) 2006-01-24 2007-01-23 Ear cup
EP07709286.4A EP1981456B1 (en) 2006-01-24 2007-01-23 Ear cup
US12/087,361 US8360068B2 (en) 2006-01-24 2007-01-23 Ear cup

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0600145-7 2006-01-24
SE0600145A SE0600145L (en) 2006-01-24 2006-01-24 The ear cup

Publications (1)

Publication Number Publication Date
WO2007086793A1 true WO2007086793A1 (en) 2007-08-02

Family

ID=37395490

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/000060 Ceased WO2007086793A1 (en) 2006-01-24 2007-01-23 Ear cup

Country Status (5)

Country Link
US (1) US8360068B2 (en)
EP (1) EP1981456B1 (en)
CN (1) CN101370452B (en)
SE (1) SE0600145L (en)
WO (1) WO2007086793A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8391534B2 (en) * 2008-07-23 2013-03-05 Asius Technologies, Llc Inflatable ear device
CN101785327B (en) * 2007-07-23 2013-11-20 艾瑟斯技术有限责任公司 Diaacoustic sound conversion connection coupler and earbuds
US20110228964A1 (en) * 2008-07-23 2011-09-22 Asius Technologies, Llc Inflatable Bubble
US8774435B2 (en) 2008-07-23 2014-07-08 Asius Technologies, Llc Audio device, system and method
AU2010247865A1 (en) * 2009-05-09 2012-01-12 Asius Technologies, Llc Inflatable ear device
US8526651B2 (en) * 2010-01-25 2013-09-03 Sonion Nederland Bv Receiver module for inflating a membrane in an ear device
US9901246B2 (en) 2014-02-05 2018-02-27 Verathon Inc. Cystoscopy system including a catheter endoscope and method of use
KR101930668B1 (en) * 2015-07-07 2018-12-18 선전 로욜 테크놀로지스 컴퍼니 리미티드 Ear muff
WO2025120436A1 (en) * 2023-12-07 2025-06-12 3M Innovative Properties Company Hearing protection device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4572323A (en) 1983-03-28 1986-02-25 Racal Safety Limited Hearing protectors
WO1990015584A1 (en) * 1989-06-12 1990-12-27 Focus Veilig B.V. Ear protector

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GB258732A (en) * 1925-09-22 1926-09-30 Percival Joseph Pearsall Improvements in or relating to attachments for telephone earpieces
SE389604B (en) * 1973-12-21 1976-11-15 Gullfiber Ab COMFORT COLLAR FOR ORONKAPOR
US4519106A (en) * 1981-08-19 1985-05-28 Ralph Sandquist Spine board
US4794656A (en) * 1984-08-20 1989-01-03 Henley Jr Albert F Emergency backboard
SE500417C2 (en) * 1990-11-02 1994-06-20 Peltor Ab Ear cover for ear protectors or headphones
CN1067370A (en) * 1992-03-24 1992-12-30 孙国平 Noise disease therapeutic appliance with decrease of noise functions
CN1097296A (en) * 1993-07-10 1995-01-18 姜国先 Silencer
US6151717A (en) * 1999-07-20 2000-11-28 Aearo Company Transparent or translucent earmuff cup
US6363936B1 (en) * 1999-12-06 2002-04-02 2Protectu, Inc. Strapping device for patient transport
CN2409941Y (en) * 2000-01-24 2000-12-13 彭永华 Heated earmuffs
SE0100292D0 (en) * 2001-02-01 2001-02-01 Kompositprodukter Ab Cover and washer for hearing protection
US7281285B2 (en) * 2002-09-10 2007-10-16 Zucker Stefanie A Pediatric emergency transport device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4572323A (en) 1983-03-28 1986-02-25 Racal Safety Limited Hearing protectors
WO1990015584A1 (en) * 1989-06-12 1990-12-27 Focus Veilig B.V. Ear protector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1981456A4

Also Published As

Publication number Publication date
CN101370452A (en) 2009-02-18
EP1981456B1 (en) 2015-09-30
US20090014014A1 (en) 2009-01-15
EP1981456A1 (en) 2008-10-22
US8360068B2 (en) 2013-01-29
SE528428C2 (en) 2006-11-14
CN101370452B (en) 2011-01-12
SE0600145L (en) 2006-11-14
EP1981456A4 (en) 2013-03-27

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