RU2302224C1 - Anti-noise head phones (versions) - Google Patents

Abstract

FIELD: safety engineering.

SUBSTANCE: anti-noise head phone can be used as aid for protection ears of human against hazardous influence of excess noise. Anti-noise head phones have headband, case with protector, made of material with magnetic properties, and noise-absorbing facing. According to first version, as noise-absorbing facing the plates made of mineral on basalt base cotton, like "Rockwool", can be used, as well as mineral cotton "URSA", either basalt cotton P-75, or glass cotton provided with facing made of glass felt, or foamed polymer like polyethylene or polypropylene. Sound-absorbing element has its total surface faced by acoustic transparent material, for example, with glass tissue of EZ-100 type or "Povyden". According to second version, plates on base of aluminum-containing alloys can be used which plates are filled with titanium hydride or with air at density within 0,5-0,9 kg/m3 to have the following properties: compression strength is within 5-10 MPa, bent strength is within 10-20 MPa. For the third version, members made of solid porous noise-absorbing material are used as noise-absorbing facing, which are namely foamed aluminum or metal ceramics, either metal plastics, or shell rocks with degree of porosity being within 30-45% range. According to fourth version, members with layer-by-layer reeling of porous threads, reeled upon acoustic transparent frame, like wire frame, are used. According to fifth version, crunches of solid vibration damping materials are used, for example, elastomer, polyurethane, or "Agat", "Antivibrit", "Shwim" type flexible PVC. Size of fractions of crunch is 0,3-2,5 mm.

EFFECT: higher noise protection.

5 cl, 3 dwg

Description

The invention relates to safety, and in particular to devices for the individual protection of human hearing from the harmful effects of noise of an increased level.

Known anti-noise headphones containing a headband, body with protectors, sound-absorbing lining according to the patent of the Russian Federation No. 20132301, A61F 11/06, 1991 (prototype).

However, well-known headphones do not provide healthy, safe working conditions.

The technical result is the reduction of the harmful effects of noise on the human body.

This is achieved by the fact that in anti-noise headphones containing a headband, a protector case made of a material having magnetic properties and a sound-absorbing cladding, rockwool or rockwool type mineral wool slabs are used as sound-absorbing cladding URSA ", or P-75 type basalt wool, or glass wool lined with glass wool, or a foamed polymer, such as polyethylene or polypropylene, and the sound-absorbing element is lined with ac -terrorist transparent material, such as fiberglass-type EG-100 or a polymer type "Poviden".

The drawing shows anti-noise headphones, a cut.

Anti-noise headphones include a headband 1 to which a housing 2 with a protector 3 is attached. The protector is made of a material having magnetic properties, for example, magnetic rubber. The cavity of the housing 2 is filled with a sound absorber 4.

As sound-absorbing cladding 4, slabs made of rockwool basalt mineral wool or URSA mineral wool or P-75 basalt wool or glass wool lined with glass wool or foamed polymer, for example polyethylene or polypropylene are used, moreover the sound-absorbing element is lined with an acoustically transparent material over its entire surface, for example, EZ-100 fiberglass or Poviden type polymer.

As sound-absorbing cladding 4, plates based on aluminum-containing alloys are used, followed by filling them with titanium hydride or air with a density in the range of 0.5 ... 0.9 kg / m ³ with the following strength properties: compressive strength in the range of 5 ... 10 MPa, bending strength within 10 ... 20 MPa (not shown).

As sound-absorbing cladding 4, elements of rigid porous sound-absorbing material are used, for example, foam aluminum or cermets, or metal foam, or shell rock with a porosity degree in the range of optimal values: 30 ... 45% (not shown).

As sound-absorbing cladding, elements are used with layer and cross winding of porous threads wound on an acoustically transparent frame, for example a wire frame (not shown).

As sound-absorbing cladding 4, crumbs from solid vibration-damping materials, for example, elastomer, polyurethane, or plastic compound such as Agate, Anti-Vibrate, Shvim, are used, and the size of the crumb fractions lies in the optimal range of values: 0.3 ... 2, 5 mm (not shown).

Anti-noise headphones work as follows.

When using anti-noise headphones, the body 2 with the protector 3 is pressed against the auricle. Biologically active points located in the region of the auricle are exposed to the magnetic field created by the tread 3 and the casing 2, which have magnetic properties. The influence of a magnetic field on biologically active points located in the region of the auricle relieves a headache and makes it possible to cope with the stress state resulting from exposure to noise (see the journal "Health". No. 7, 1990).

The proposed anti-noise headphones compared to the base object (prototype) can significantly reduce the harmful effects of noise on the human body through the use of new sound-absorbing materials of the sound absorber 4.

Claims (5)

1. Noise-reducing headphones containing a headband, a protector case made of a material having magnetic properties, and a sound-absorbing lining, characterized in that as rock-sounding lining, slabs made of rockwool basalt-based mineral wool or “rockwool-type” mineral wool are used URSA ", or P-75 type basalt wool, or glass wool lined with glass wool, or foamed polymer, such as polyethylene or polypropylene, moreover, the sound-absorbing element is lined with acoustics over its entire surface a transparent material, such as fiberglass type EZ-100 or polymer type "Poviden." 2. Anti-noise headphones containing a headband, a protector case made of a material having magnetic properties, and a sound-absorbing cladding, characterized in that plates based on aluminum-containing alloys are used as a sound-absorbing cladding, followed by filling them with titanium hydride or air with a density within 0.5 ... 0.9 kg / m ³ with the following strength properties: compressive strength in the range of 5 ... 10 MPa, bending strength in the range of 10 ... 20 MPa. 3. Anti-noise headphones containing a headband, a protector case made of a material having magnetic properties, and a sound-absorbing lining, characterized in that elements of a rigid porous noise-absorbing material, such as foam aluminum or cermets, or metal foam, or stone, are used as sound-absorbing lining. shell rock with a degree of porosity in the range of optimal values of 30 ... 45%. 4. Noise-reducing headphones containing a headband, a protector case made of a material having magnetic properties, and a sound-absorbing lining, characterized in that elements with layer-wise and cross-wound porous threads wound around an acoustically transparent frame are used as sound-absorbing lining wire frame. 5. Anti-noise headphones containing a headband, a protector case made of a material having magnetic properties and a sound-absorbing lining, characterized in that crumbs of solid vibration-damping materials, for example elastomer, polyurethane, or agate plastic compound, are used as sound-absorbing lining , "Anti-vibrate", "Shvim", moreover, the size of the fractions of the crumbs lies in the optimal range of values of 0.3 ... 2.5 mm.