Anti-noise head phone (versions)

FIELD: aids for protection against noise.

SUBSTANCE: anti-noise head phone can be used as aid for protection ears of human working under conditions of high acoustic noises and as aid being component of protection helmets etc. Anti-noise head phone has internal case provided with opening being size-adjusted and external case. Both cases are connected by connecting link. Device also has sealing shaft, onto different of which shaft the internal and external cases are connected correspondingly. Space between cases s filled with sound-absorbing facing. As facing the plates made of mineral cotton, like "Rockwool", on basalt basis can be used, or 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" polymer for the first version. Plates on base of aluminum-containing alloys are used 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 second version. For the third version, members made of solid porous noise-absorbing material are used as noise-absorbing facing, which is 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

 

The invention relates to a device for protection against noise and can be used as an independent product for hearing protection person working in conditions of high acoustic noise, and in the composition set, protective headsets, etc.

Famous anti-noise headset for RF patent No. 2063068, G10 11/00, 1996, containing an adjustable according to the size of the bore of the inner casing and the outer casing, which are connected between a connecting element, and an elastic sealing roller, on different shoulders which are installed respectively the outer and inner casing, the space between which is filled with sound-absorbing lining (prototype).

The disadvantage of the prototype is insufficient homosalate.

The technical result is improved sound proofing.

This is achieved by the fact that anti-noise ear containing an adjustable according to the size of the bore of the inner casing and the outer casing, which is connected between a connecting element, and an elastic sealing roller, on different shoulders which are installed respectively the outer and inner casing, the space between which is filled with sound-absorbing cladding, as a sound-absorbing lining used slab mineral wool basalt is again of type "Rockwool", or mineral wool of type "URSA", or basalt wool type P-75, or glass wool lined with glass wool material, or a foamed polymer, such as polyethylene or polypropylene, and an absorbent element across its surface lined with acoustically transparent material, such as fiberglass type EZ-100 or a-type polymer Povide".

Figure 1 shows a diagram of the proposed device; figure 2 - location of beams on elastic sealing platen; figure 3 - mounting options rocker.

Anti-noise headset contains a sealing elastic roller 1 made of elastic material and is covered with a plate hygienic shell 2A, 2B. On the shaft 1 posted by rocker 3. The rocker has a support 4, which is based on the top shell of the roller. The shoulders 5 and 6 of the rocker arm 3 can be mounted on the platen 1, and above it (figure 3). The shoulders 5 and 6 are provided with grooves 7 and 8 which are rounded ends 9 and 10 of the 11 external and internal 12 buildings, between which lies megabusa cavity 13. The outer casing 11 has the outer side of the flange 14, which serves for fastening the cuff 15. Elastic ring 16 is designed to compress the cuff 15 to the outer housing 11.

Inner housing 12 is equipped with an acoustic passage 17, which is adjustable according to the size of the hole or the group of the holes, connecting micorphone cavity 13 and the cavity 18 by the inner housing 12. The ring 19 between the enclosures are made of sound-absorbing lining, which is used slabs of basalt mineral wool on the basis of type "Rockwool", or mineral wool of type "URSA", or basalt wool type P-75, or glass wool lined with glass wool material, or a foamed polymer, such as polyethylene or polypropylene, and an absorbent element across its surface lined with acoustically transparent material, such as fiberglass type EZ-100 or a-type polymer Povide".

As a sound-absorbing lining 19 is used plates on the basis of aluminium-containing alloys, followed by filling them with titanium hydride or by air with a density in the range of 0.5...0.9 kg/m3with the following mechanical properties: compressive strength in the range 5...10 MPa, a bending strength in the range of 10 to 20 MPa (not shown).

As a sound-absorbing lining 19 uses the elements of the hard porous sound-absorbing material, for example of penelopina or cermets, or metalloboranes, or stone-limestone with porosity in the range of optimal values: 30...45% (not shown).

As a sound-absorbing lining 19 elements are used with layer-by-layer and cross-named the th of porous fibers, wound on acoustically transparent frame, for example the wire frame (not shown).

As a sound-absorbing lining 19 are made from solid vibrocentric materials, such as elastomer, polyurethane, or plastic-type "agate", "Antifibrin", "Swim", and particle size of the crumb lies in the optimum range of values: 0,3...2.5 mm (not shown).

Anti-noise headset works as follows.

When exposed to noise acoustic pressure on the outer casing 11 and he comes in an oscillatory motion along the axis 0-0, with its end face 9 slides freely in the grooves 7, will not prevent this movement, which resulted in the cavity 13 is generated acoustic pressure amplitude proportional to the amplitude of the noise and the spectrum of this noise. Because the outer 11 and inner housing 12 is installed on the shoulders of the rocker arm, the inner case will oscillate with the amplitude of the outer casing with the spectrum of the current noise, but out of phase with the outer casing. Thus the end face 10 will slide freely in the grooves 8, not preventing oscillations. Excited in the cavity 18 of the noise due to out-of-phase motion of the body will also be out of phase with the noise in the cavity 13. Thus, if in the cavity 13 occurs, a positive pressure wave in the cavity 18 is negative, so what. occurs attenuation of the noise penetrated into the cavity 18. Cavity 13 and 18 are interconnected acoustic passage 17, adjustable size, which may optionally vary the amplitude of movement of the housing 12 relative to the housing 11, i.e., to achieve optimization of device characteristics, in particular the maximum positive effect in the desired frequency range.

Regulation size acoustic passage by changing its cross-section can be made both during pre-setting device, and in the process of operation.

The cuff 15 is used for additional sound proofing in place of the connection of the roller frame and rockers, as well as for fixing the outer case.

1. Anti-noise headset, containing an adjustable according to the size of the bore of the inner casing and the outer casing, which are connected by a connecting element, and an elastic sealing roller, on different shoulders which are installed respectively the outer and inner casing, the space between which is filled with sound-absorbing cladding, characterized in that as a sound-absorbing lining used slabs of basalt mineral wool on the basis of type "Rockwool", or mineral wool of type "URSA", or basalt wool type P-75, or glass wool with facing steklovata the Ohm, or foamed polymer, such as polyethylene or polypropylene, and an absorbent element across its surface lined with acoustically transparent material, such as fiberglass type EZ-100 or a-type polymer Povide".

2. Anti-noise headset, containing an adjustable according to the size of the bore of the inner casing and the outer casing, which are connected by a connecting element, and an elastic sealing roller, on different shoulders which are installed respectively the outer and inner casing, the space between which is filled with sound-absorbing cladding, characterized in that as a sound-absorbing lining plates are used on the basis of aluminium-containing alloys, followed by filling them with titanium hydride or by air with a density in the range of 0.5...0.9 kg/m3with the following mechanical properties: compressive strength in the range 5...10 MPa, a bending strength in the range of 10 to 20 MPa.

3. Anti-noise headset, containing an adjustable according to the size of the bore of the inner casing and the outer casing, which are connected by a connecting element, and an elastic sealing roller, on different shoulders which are installed respectively the outer and inner casing, the space between which is filled with sound-absorbing lining, ex is different, however, as a sound-absorbing lining elements of the hard porous sound-absorbing material, for example of penelopina or cermets, or metalloboranes, or stone-limestone with porosity in the range of optimal values 30...45%.

4. Anti-noise headset, containing an adjustable according to the size of the bore of the inner casing and the outer casing, which are connected by a connecting element, and an elastic sealing roller, on different shoulders which are installed respectively the outer and inner casing, the space between which is filled with sound-absorbing cladding, characterized in that as a sound-absorbing lining elements are used with layer-by-layer and cross-winding of the porous yarn wound on acoustically transparent frame, for example the wire frame.

5. Anti-noise headset, containing an adjustable according to the size of the bore of the inner casing and the outer casing, which are connected by a connecting element, and an elastic sealing roller, on different shoulders which are installed respectively the outer and inner casing, the space between which is filled with sound-absorbing cladding, characterized in that as a sound-absorbing lining used crumb is C solid vibrocentric materials, for example elastomer, polyurethane or plastic-type "agate", "Antifibrin", "Swim", and particle size of the crumb lies in the optimum range of values of 0.3...2.5 mm



 

Same patents:

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

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EFFECT: possible creation of reversible thermo-chrome materials, capable of changing color when heated up to 200-210°C, accessible and easy to produce and comfortable for use in practice.

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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.

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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.

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