WO2006054944A1 - Earmuff - Google Patents
Earmuff Download PDFInfo
- Publication number
- WO2006054944A1 WO2006054944A1 PCT/SE2005/001724 SE2005001724W WO2006054944A1 WO 2006054944 A1 WO2006054944 A1 WO 2006054944A1 SE 2005001724 W SE2005001724 W SE 2005001724W WO 2006054944 A1 WO2006054944 A1 WO 2006054944A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- earmuff
- pressure
- cup
- annular element
- cap
- Prior art date
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 generally to an ear- muff comprising a cup-shaped cap, which has an edge por ⁇ tion defining an opening, and an annular element which is arranged to extend along said edge portion, the cup- shaped cap and the annular element being secured to one another by a locking means.
- a common type of hearing protector comprises two earmuffs and a headband connecting the earmuffs to one another.
- a conventional earmuff usually comprises a cup- shaped cap, an annular bottom plate, a padded sealing ring which is connected to the bottom plate and arranged to abut against a user's head, and stuffing which can be made of foam plastic and is positioned in the cap.
- the cup-shaped cap and the annular bottom plate are tightly fixed to each other by a conventional snap lock.
- a con ⁇ ventional snap lock is provided, for instance, by the cap being provided with a projection extending along the opening portion of the cap. The projection is formed on the inside of the opening portion of the cap.
- the bottom plate has a connecting portion which is arranged to extend a certain distance into the opening portion of the cap.
- the connecting portion has on the outside a circum ⁇ ferential groove. The groove cooperates with the projec ⁇ tion to tightly hold the cap and the bottom plate toge ⁇ ther.
- an earmuff Owing to the difference, it is also difficult to adjust an earmuff to a specific purpose.
- To adjust an earmuff to a specific purpose means, for instance, satis ⁇ fying a requirement that the capacity of damping sound in a certain frequency range be improved.
- the problem is, among other things, that different earmuffs of the same type damp, as mentioned above, sound in a certain fre ⁇ quency range to different degrees.
- An adjustment of an earmuff so that it has a good capacity of damping sound in a first frequency range means, in practice, that it is necessary to accept an inferior damping capacity in a second frequency range.
- the difference in the damping capacity of different earmuffs of the type described above can very well be in the same order as the distance between said first and second frequency ranges.
- an object of the pre ⁇ sent invention is to provide an improved earmuff.
- a special object of the invention is to provide ear- muffs which have a consistent sound damping capacity.
- consistent sound damping capacity is meant, for instance, that two earmuffs which are of the same type and have been manufactured in the same way have essentially the same sound damping capacity.
- a further object of the invention is to provide an earmuff which has improved sound damping capacity.
- Another object of the invention is to provide a basic construction of an earmuff which allows great free ⁇ dom in design.
- an earmuff comprising a cup-shaped cap, which has an edge portion defining an opening, and an annular element which is arranged to extend along said edge portion, the cup-shaped cap and the annular element being secured to one another by a locking means.
- the earmuff is characterised in that it further comprises at least one pressure-equalising means, which is arranged between and in contact with the cup- shaped cap and the annular element.
- an improved earmuff in which tension or pressure between the cup-shaped cap and the annular element is distributed substantially uniform ⁇ ly around the opening portion of the cap. Effects of dif ⁇ ferences with respect to geometry, rigidity or the like which, for instance, arise in manufacture and which would result in differences in the transmission of sound between the cap and the annular element are eliminated to a great extent owing to the pressure-equalising means.
- a particular advantage of the inventive earmuff is that two earmuffs achieve a similar sound damping capacity.
- a fur ⁇ ther advantage is that the earmuff can be adjusted to different surroundings and to sound in specific frequency ranges .
- annular is not necessarily limited to a circular shape, but the ring shape defines an element which extends around a central opening.
- the ring shape can be more or less square or have other shapes.
- the annular element can be formed with different cross-sectional shapes depending on what other components it is arranged to cooperate with.
- Said at least one pressure-equalising means is arranged in an engaging surface between the cup-shaped cap and the annular element of said locking means. By the pressure-equalising means being arranged in an engaging surface, it will provide a pressure-equalising power transmission between the cap and the annular element, which adds to consistent transmission of sound.
- the engaging surface defines a geometric band extending along the opening and having a width, the pressure-equalising means being arranged to extend along the opening along a first portion of the width of the engaging surface.
- the pressure-equalising means By the pressure-equalising means extending along the opening, consistent force transmis ⁇ sion is obtained along the entire circumference of the cap and the annular element.
- the cup-shaped cap and the annular element can, along a second portion of the width of the engaging sur ⁇ face, abut directly against each other, which brings the advantage of obtaining a dimensionally stable contact between the cap and the annular element.
- the pressure-equalising means may comprise an annular element, which brings the advantage that the pressure-equalising means can be manufactured in a simple manner.
- the pressure-equalising means has in the longitudinal direction the shape of a ring. This also means that the pressure-equalising means helps to ensure tightness in the connection between the cup-shaped cap and the annular element. Thus the tole ⁇ rances in the manufacture of the cup-shaped cap and the annular element can be increased.
- the pressure-equalising means may comprise an elas ⁇ tic insert, which means that the pressure-equalising means can be manufactured in a simple and inexpensive manner.
- the elastic insert may help to main ⁇ tain tension in the locking means.
- the elastic insert can be made of a polymer mate ⁇ rial, which brings the advantage that it can be manu- factured in a simple and inexpensive manner.
- the locking means may comprise a snap lock.
- snap lock is meant a lock comprising two parts. In locking, one of the parts is pressed onto the other part and snaps, by temporary elastic deformation, onto this other part and locks the two parts relative to one another.
- a snap lock is pro ⁇ vided by the cap being provided with a projection which extends along the opening portion of the cap. The projec ⁇ tion is formed on the inside of the opening portion of the cap.
- the annular element has a flange which is arranged to extend a certain distance into the opening portion of the cap. The flange has on its outside a cir- cumferential recess. The recess cooperates with the pro ⁇ jection to tightly hold the cap and the annular element together.
- the pressure-equalising means can be arranged in said recess.
- the location of the pressure-equalising means brings the advantage that it simplifies mounting since it easily retains its position in the recess. It also brings the advantage that the pressure-equalising means is located in the position in which the greatest power transmission between the cap and the annular ele- ment usually occurs.
- the elastic insert can have a circular, square, triangular or H-shaped cross-section.
- the elastic insert can have a homogeneous or hollow cross-section, such as a tube of various cross-sectional shapes.
- Fig. 1 is a side view of a hearing protector com ⁇ prising two inventive earmuffs.
- Fig. 2 is an exploded view of an inventive earmuff.
- Fig. 3 is a cross-sectional view of the earmuff in Fig. 1 along line I-I.
- Fig. 4 is a cross-sectional view of an enlarged part of Fig. 3.
- Fig. 1 illustrates a hearing protector 1 comprising a headband 2 and two earmuffs 3.
- the earmuffs 3 are con ⁇ nected to the respective ends of the headband 2.
- a user places an earmuff 3 over each ear, the headband 2 holding the earmuffs 3 in place on the user's head.
- the earmuff 3 comprises a cup-shaped cap 4, stuffing material 5, a pressure- equalising means 6, an annular element 7 and a sealing ring 8.
- the stuffing material 5 is arranged in the cavity of the cup-shaped cap 4.
- a farther side, the side facing away from a user, of the annular element 7 is fixed to the cup-shaped cap 4 by a locking means 9 in the form of a snap lock 9.
- the snap lock 9 comprises a first and a second part 10, 11. The first part 10 is positioned on the cup-shaped cap 4 and the second part 11 is positioned on the annular element 7.
- the pressure-equalising means 6 is positioned in an engaging surface between, and is in contact with, both the first and the second part 10, 11 of the snap lock 9, see Fig. 3 and Fig. 4.
- the sealing ring 8 is fixed by a second snap lock (not shown) to a front side, the side facing a user, of the annular ele ⁇ ment 7.
- the cap 4 is in the form of a cup and has an edge portion 12 which defines an opening 13 of the cap. As shown in Fig. 2 and Fig. 3, the opening 13 of the cap 4 defines a space which resembles a space as enclosed by a half-sphere.
- the fastening means 14 which can be, for instance, two pins, are arranged to fasten the headband 2 to the cap 4.
- the first part 10 of said snap lock 9 is positioned on the inside of the cap 4, that is the side facing a user and the enclosed space.
- the first part 10 comprises a projection 15 which extends around the inside of an open ⁇ ing portion 16 of the cap 4.
- the opening portion 16 has an engaging surface which in the assembled state is adapted to engage and abut against on the one hand the pressure-equalising means 6 and, on the other, a corre ⁇ sponding engaging surface of the second part 11 of the snap lock 9.
- the projection 5 and the cap 4 are made in one piece of a polymer material. It will be appreciated that the parts can be separately made and subsequently assembled in a suitable manner, for instance by welding or gluing.
- the annular element 7 has a front side and a rear side, the front side being the side facing the sealing ring 8 and thus also a user, and the rear side being the side facing the cap 4 and thus also facing away from a user.
- the annular element 7 which is called bottom plate has a through hole 17 extending from the front side to the rear side.
- the second part 11 of the snap lock 9 is formed on the rear side of the annular element 7.
- the second part 11 extends as a circumferential flange 18 around the annular element 7.
- the second part 11 has an extent corresponding to the shape of the opening 13 of the cup- shaped cap 4.
- a recess 19 is formed on the side of the flange 18 which faces away from the through hole 17.
- the recess 19 has a shape supplementary to the projection 15 of the cup-shaped cap 4.
- the flange 18 On the same side as the recess 19, the flange 18 has an engaging surface.
- the surface of the recess 19 is included in the engaging surface, which in the assembled state is in contact with the pressure-equalising means 6 and the engaging surface of the cap 4.
- the second part 11 can be formed with a smaller height relative to corre ⁇ sponding parts according to prior art, which brings the advantage that the requirements as to the shape of the cap 4 are reduced.
- the pressure-equalising means 6 consists in the shown example of an annular flexible insert 6.
- the insert 6 is circular in cross-section.
- the insert 6 is arranged between the cup-shaped cap 4 and the annular element 7.
- the insert 4 is in contact with both the cup-shaped cap 4 and the annular element 7 in the respective engaging surfaces.
- the pressure-equalising means 6 also brings the advantage that the tolerances in the manufacture of the cup-shaped cap 4 and the annular element 7 can be increased, which results in reduced costs of manufacture. The reason for this is that the pressure-equalising means 6 also helps to provide a seal between the cap 4 and the annular ele- ment 7.
- the pressure-equalising means 6 is positioned in the recess 19 of the second part 11 of the annular element 7, which is illustrated in Fig. 3 and Fig. 4.
- the projection 15 of the snap lock 9 of the cap 4 presses the pressure-equalising means 6 against the recess 19 of the snap lock 9 of the annular element 7.
- the present invention is not limited to the embodiments described above and that a person skilled in the art can modify the above- described earmuff within the scope of the invention as defined in the claims .
- the elastic insert also outside the recess which is adapted to pro ⁇ vide the snap lock function.
- the flange of the annular portion is advantageously provided with a further groove which is adapted to accommodate the annular elastic insert.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Otolaryngology (AREA)
- Psychology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Closures For Containers (AREA)
- Headphones And Earphones (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Finger-Pressure Massage (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602005016005T DE602005016005D1 (en) | 2004-11-17 | 2005-11-16 | EAR CAP |
EP05803618A EP1811932B1 (en) | 2004-11-17 | 2005-11-16 | Earmuff |
AU2005307157A AU2005307157B2 (en) | 2004-11-17 | 2005-11-16 | Earmuff |
BRPI0517728A BRPI0517728A8 (en) | 2004-11-17 | 2005-11-16 | EAR PROTECTOR |
JP2007542973A JP2008520337A (en) | 2004-11-17 | 2005-11-16 | Earmuff |
AT05803618T ATE439108T1 (en) | 2004-11-17 | 2005-11-16 | EAR PROTECTION CAP |
US11/804,393 US9980855B2 (en) | 2004-11-17 | 2007-05-17 | Consistent blocking earmuff |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0402799-1 | 2004-11-17 | ||
SE0402799A SE530035C2 (en) | 2004-11-17 | 2004-11-17 | The ear cup |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/804,393 Continuation-In-Part US9980855B2 (en) | 2004-11-17 | 2007-05-17 | Consistent blocking earmuff |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006054944A1 true WO2006054944A1 (en) | 2006-05-26 |
Family
ID=33488260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2005/001724 WO2006054944A1 (en) | 2004-11-17 | 2005-11-16 | Earmuff |
Country Status (10)
Country | Link |
---|---|
US (1) | US9980855B2 (en) |
EP (1) | EP1811932B1 (en) |
JP (1) | JP2008520337A (en) |
CN (1) | CN100508921C (en) |
AT (1) | ATE439108T1 (en) |
AU (1) | AU2005307157B2 (en) |
BR (1) | BRPI0517728A8 (en) |
DE (1) | DE602005016005D1 (en) |
SE (1) | SE530035C2 (en) |
WO (1) | WO2006054944A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9980855B2 (en) | 2004-11-17 | 2018-05-29 | Honeywell Safety Products Usa, Inc. | Consistent blocking earmuff |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8443467B2 (en) * | 2008-02-15 | 2013-05-21 | Sound Team Enterprise Co., Ltd. | Earmuff assembly |
US20110225705A1 (en) * | 2010-03-16 | 2011-09-22 | 3M Innovative Properties Company | Hearing protective device with moisture resistant earmuff sound absorbers |
JP6316692B2 (en) * | 2014-07-23 | 2018-04-25 | 株式会社オーディオテクニカ | Ear pad adjusting member, and headphones and ear muffs using the ear pad adjusting member |
KR101696270B1 (en) * | 2015-09-23 | 2017-01-16 | 김수봉 | hearing protection earmuffs for military use |
CN111372544B (en) | 2017-11-21 | 2023-05-16 | 3M创新有限公司 | Pad for a hearing protector or an audio headset |
JP7358895B2 (en) | 2019-10-08 | 2023-10-11 | 株式会社Jvcケンウッド | earmuffs |
WO2022214010A1 (en) * | 2021-04-09 | 2022-10-13 | Tecmen Electronics Co., Ltd. | Ear muff and ear muff assembly |
USD1021855S1 (en) * | 2021-12-09 | 2024-04-09 | Tao Peng | Headphone |
USD1016036S1 (en) * | 2021-12-20 | 2024-02-27 | Tao Peng | Headphone |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2130470A (en) * | 1982-09-15 | 1984-06-06 | Minisonic Ag | Ear-protection device |
CH659772A5 (en) * | 1982-12-13 | 1987-02-27 | Kurt Herzig | Sealing cushion for protective earpieces |
DE8801284U1 (en) * | 1988-02-03 | 1988-04-07 | Optac GmbH, 6074 Rödermark | Earmuffs |
SE514555C2 (en) * | 1999-07-08 | 2001-03-12 | Peltor Ab | Method of making cover and cover made according to the procedure |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3535710A (en) * | 1969-01-10 | 1970-10-27 | Gentex Corp | Sound-attenuating earcup and helmet containing same |
US3952158A (en) * | 1974-08-26 | 1976-04-20 | Kyle Gordon L | Ear protection and hearing device |
FI51143C (en) * | 1975-02-14 | 1976-11-10 | Exel Oy | Hearing protection earmuff seal attachment device. |
US4459707A (en) * | 1982-08-23 | 1984-07-17 | Cabot Corporation | Ear protecting device |
US4523661A (en) * | 1983-05-16 | 1985-06-18 | Gentex Corporation | Earphone system for use in large-cavity earcups |
NL8901482A (en) | 1989-06-12 | 1991-01-02 | Focus Veilig Bv | HEARING PROTECTOR. |
SE500417C2 (en) * | 1990-11-02 | 1994-06-20 | Peltor Ab | Ear cover for ear protectors or headphones |
JPH067397A (en) * | 1992-06-26 | 1994-01-18 | Shigematsu Seisakusho:Kk | Soundproof ear cover |
US5920911A (en) * | 1997-11-17 | 1999-07-13 | Poiesis Research, Inc. | Earcup soft-seal with thinned lips and interleaving layers of damping materials |
US5996123A (en) * | 1998-10-16 | 1999-12-07 | Bacon Usa Safety, Inc. | Earmuff for noise blocking |
US6353938B1 (en) * | 2001-05-10 | 2002-03-12 | Moldex-Metric, Inc. | Sound attenuating earmuff |
CN2513549Y (en) | 2001-10-18 | 2002-10-02 | 蔡开谋 | Ear shield |
US7761932B2 (en) * | 2002-04-08 | 2010-07-27 | Polar Fusion Llc | Ear protection device |
AU2003901685A0 (en) * | 2003-04-10 | 2003-05-01 | Gath, Ricky James Mr | Lightweight helmet detachable ear protector and audio system |
SE530035C2 (en) | 2004-11-17 | 2008-02-12 | Sperian Hearing Prot Llc | The ear cup |
US7444687B2 (en) * | 2005-08-29 | 2008-11-04 | 3M Innovative Properties Company | Hearing protective device that includes cellular earmuffs |
-
2004
- 2004-11-17 SE SE0402799A patent/SE530035C2/en not_active IP Right Cessation
-
2005
- 2005-11-16 AU AU2005307157A patent/AU2005307157B2/en active Active
- 2005-11-16 JP JP2007542973A patent/JP2008520337A/en active Pending
- 2005-11-16 WO PCT/SE2005/001724 patent/WO2006054944A1/en active Application Filing
- 2005-11-16 AT AT05803618T patent/ATE439108T1/en not_active IP Right Cessation
- 2005-11-16 DE DE602005016005T patent/DE602005016005D1/en active Active
- 2005-11-16 EP EP05803618A patent/EP1811932B1/en active Active
- 2005-11-16 BR BRPI0517728A patent/BRPI0517728A8/en active Search and Examination
- 2005-11-16 CN CNB2005800392971A patent/CN100508921C/en active Active
-
2007
- 2007-05-17 US US11/804,393 patent/US9980855B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2130470A (en) * | 1982-09-15 | 1984-06-06 | Minisonic Ag | Ear-protection device |
CH659772A5 (en) * | 1982-12-13 | 1987-02-27 | Kurt Herzig | Sealing cushion for protective earpieces |
DE8801284U1 (en) * | 1988-02-03 | 1988-04-07 | Optac GmbH, 6074 Rödermark | Earmuffs |
SE514555C2 (en) * | 1999-07-08 | 2001-03-12 | Peltor Ab | Method of making cover and cover made according to the procedure |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9980855B2 (en) | 2004-11-17 | 2018-05-29 | Honeywell Safety Products Usa, Inc. | Consistent blocking earmuff |
Also Published As
Publication number | Publication date |
---|---|
DE602005016005D1 (en) | 2009-09-24 |
EP1811932B1 (en) | 2009-08-12 |
SE0402799D0 (en) | 2004-11-17 |
BRPI0517728A8 (en) | 2018-06-12 |
CN100508921C (en) | 2009-07-08 |
SE0402799L (en) | 2006-05-18 |
US20070226877A1 (en) | 2007-10-04 |
JP2008520337A (en) | 2008-06-19 |
ATE439108T1 (en) | 2009-08-15 |
CN101076306A (en) | 2007-11-21 |
AU2005307157A1 (en) | 2006-05-26 |
BRPI0517728A (en) | 2008-10-21 |
US9980855B2 (en) | 2018-05-29 |
SE530035C2 (en) | 2008-02-12 |
AU2005307157B2 (en) | 2009-04-09 |
EP1811932A1 (en) | 2007-08-01 |
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