RU200783U1 - PROTECTIVE INSERT OF FIREFMER'S GLOVE - Google Patents

Abstract

The utility model relates to hand protection equipment for firefighters and rescuers in emergency situations to increase the level of safety of personnel involved in extinguishing fires. The technical result achieved by the implementation of the utility model consists in expanding the arsenal of technical means used to protect the hands of a firefighter, in increasing the thermal resistance and mechanical strength of gloves, which are made of several functional layers, as well as in increasing the level of safety of personnel involved in extinguishing fires fire. To achieve the technical result, a protective insert for a firefighter's glove is proposed, built into a multilayer glove (1) between a thermal protection layer (7) and a hygienic layer (6) adjacent to the palm of the hand. The protective liner (2) is made with two layers (3) with the possibility of forming a space between them, filled in the working position with air. In this case, on one of the layers (3) of the liner, springs (4) made of a material with shape memory are fixed, which ensures the elongation of the springs when the temperature of the spring reaches the point of transformation of the shape of its material to act on the opposite layer of the protective liner and create space. The springs (4) have a rectangular shape and the ability to move freely under tension and compression during transformation, and also have the shape of a flat rectangle under isothermal conditions. The layers (3) of the protective liner are made of dense breathable cotton fabric and are sewn along the liner contour with overcast-type stitches, providing air flow into the liner inner space formed by the layers. On opposite sides, the protective liner (2) is provided with mounting material (5) for fixing it on the hygienic layer (6) along the glove in the palm part. 3 C.p. f-ly. 3 ill.

Description

The utility model relates to hand protection for firefighters and rescuers in emergency situations to increase the safety level of personnel involved in extinguishing fires.

It is known from the prior art to use in the composition of a firefighter's combat kit protective equipment for hands in the form of gloves for firefighters, containing mainly four functional layers: an outer layer that provides protection against high temperatures, an aggressive environment, contact with open fire and hot surfaces; waterproof layer; heat-insulating layer and inner hygienic layer (https://tdstroi.ru/perchatki-dlja-pozharnyh.html, viewed on February 27, 2020).

Known is a package of materials for special protective clothing for a firefighter containing an outer layer of fabric made from aramid fibers, a waterproofing coating of a polymer composition applied to the inner surface of the outer layer, intermediate and inner layers, while the fabric of the outer layer is impregnated with a polymer solution of organofluorine compounds, the waterproofing coating of the outer layer is made on the basis of polyurethane, the intermediate layer is made of a non-woven material based on polyester microfibers, and the inner layer is made of a fabric based on aramid fibers, impregnated with a solution of a polymer of organofluorine compounds and having a waterproofing coating made of a polymer composition based on polyurethane on the side of the intermediate layer (RF Patent No. 179336 U1, priority date 05/10/2017, publication date 05/08/2018, authors: Smirnova E.L., et al., RU).

The disadvantage of the known analogs is the need to use special materials for the manufacture of functional layers.

Known protective glove for a firefighter, consisting of an outer glove made of fire-retardant textile material based on polyaramide fibers with an inner polymer coating, and an inner glove made of breathable heat-insulating textile material, in particular, rubber-textile material of double-sided duplication (RF Patent No. 168072 U1 , priority date 04/19/2016, publication date 01/17/2017, author: V.P. Mishta, RU).

A disadvantage of the known firefighter's glove is the difficulty in aligning the two gloves and the use of a special material for the inner glove.

Known protective glove for a firefighter, consisting of an outer glove made using a heat-resistant material and with a polymer coating on one of its surfaces, and an inner glove, and on the back of the outer glove reinforcing linings are made of fire-retardant textile material, and the inner glove contains an outer waterproof layer , which has vapor permeability, and an internal heat-insulating layer with the formation of a heat-insulating air gap between them (RF Patent No. 126904 U1, priority date 11/19/2012, publication date 04/20/2013, authors: EL Smirnova et al., RU).

The disadvantage of the known glove is the insufficient efficiency of protection due to the low fire-retardant function of the reinforcing linings of the outer glove and the low efficiency of the heat-insulating air gap between the layers of the inner glove.

From the prior art is known adopted as a prototype protective liner against overheating, which is a removable part of a firefighter's clothing containing a multilayer material, the liner is made with at least two layers of gas-tight material with the possibility of forming between these layers a sealed space filled with cooling gas, in particular nitrogen, while on one of the layers or on an additional lining springs are fixed from a material with a shape memory, in particular nitinol, in the form of flat spirals, which are rolled into a circle under isothermal conditions, and as a source of cooling gas, a nitrogen cartridge equipped with an outlet valve with an element made of material with a shape memory and a grip, the can is fixed between the layers that can be pulled apart by means of springs with the possibility of its removal for filling with nitrogen, while along the contour of the protective liner, tight seams are made, forming a section with an internal through cavity formed by layers of fabric, in p The canister with nitrogen is hermetically installed, the outlet valve facing the inside of the space between the layers, and gripping outward (RF Patent No. 2553005 C1, priority date 07.24.2014, publication date 06.10.2015, authors: Enyutina T.A. et al., RU).

The disadvantage of the prototype is that it is advisable to either build it into a firefighter's clothes, or use it as a separate piece of clothing, while its design requires the creation of a sealed space and the presence of a gas cartridge of limited volume, which must be filled with nitrogen after use or changed under operating conditions ...

The technical problem solved by the utility model is the creation of a simplified design of a protective liner to increase the safety level of personnel involved in extinguishing fires and is designed to effectively protect the hands of a firefighter by increasing the thermal resistance and mechanical strength of gloves.

To solve the technical problem and achieve the technical result, a protective liner for a firefighter's glove is proposed, which is built into a multilayer glove between the thermal protection layer and the hygienic layer adjacent to the palm. The protective insert is made with two layers with the possibility of forming a space between them, which is filled in the working position with air. In this case, springs made of a shape memory material are fixed on one of the layers of the liner, which ensures the elongation of the springs when the temperature of the spring reaches the point of transformation of the shape of its material to act on the opposite layer of the protective liner and create space. The springs are rectangular in shape and can move freely under tension and compression during transformation, and also have the shape of a flat rectangle under isothermal conditions. The layers of the protective liner are made of dense breathable cotton fabric and are sewn along the liner contour with overcast-type stitches that provide air flow into the inner space of the liner formed by the layers. On opposite sides, the protective liner is provided with mounting material for fixing it on the hygienic layer along the glove in the palm part.

According to the invention, the protective liner of a firefighter's glove, in particular, is characterized in that the springs are fixed on one of the layers of the liner in a staggered manner to form a support surface in the palm part of the glove.

According to the invention, the protective liner of a firefighter's glove, in particular, is characterized by the fact that the springs are fixed on one of the layers of the liner by means of an adhesive bond.

According to the utility model, the protective liner of a firefighter's glove is characterized by the fact that the springs are made of nitinol.

FIG. 1 schematically shows a protective insert for a firefighter's glove, built into the palm part, general view; in fig. 2 - section А-А, inoperative position; in fig. 3 shows a fragment of a multilayer glove with a protective insert embedded between the layers of the glove, working position.

The drawings show the following designations: 1 - firefighter's glove; 2 - protective liner; 3 - liner layers; 4 - springs from nitinol; 5 - assembly matter; 6 - hygienic inner layer of the glove; 7 - layer of thermal protection and 8 - layer of mechanical protection of the glove.

The protective insert 2 built into the multilayer firefighter's glove 1 is made with at least two layers 3 of dense breathable cotton fabric, with the possibility of forming a space between these layers, filled in the working position with air. On one of their layers 3, springs 4 are fixed, for example, by an adhesive bond, made of a material with a shape memory, for example, nitinol, which ensures the extension of the spring when the temperature of the spring reaches the point of transformation of the shape of its material to act on the opposite layer of the protective insert 2 and create space. In this case, the springs 4 are staggered, have a rectangular shape and the possibility of free movement (stretching, compression) during transformation, and in isothermal conditions they fold in the form of a flat rectangle, as shown in Fig. 1. Breathable cotton layers 3 are sewn along the contour of the protective liner with overlock stitches, between which air can enter the inner space formed by the layers 3. On opposite sides, the protective insert 2 is provided with mounting material 5 for fixing it on the hygienic layer 6 along the palm part of the glove 1.

The installation of a protective insert 2 inside a multilayer glove 1 having an inner hygienic layer 6, a thermal protection layer 7 and an outer mechanical protection layer 8 is carried out between the thermal protection layer 7 and the hygienic layer 6 adjacent directly to the palm of the fireman's hand (Fig. 2, Fig. 3). In this case, the protective insert 2 is fixed to the hygienic layer 6 using the mounting material 5 in any known manner.

The implementation of the protective function using the inventive protective liner is carried out as follows.

In the standard fail-safe mode, the staggered springs 4 have an original flat rectangle shape to provide an optimal bearing surface area. When performing work on extinguishing fires in an environment with an elevated temperature, the layers that make up the glove 1 are heated. As a result, when the temperature of the spring reaches the point of transformation of the shape of its material, the rectangular springs made of a material with a shape memory and which are the driving element of the automatic actuation mechanism become longer and, acting on the layers 3 of the protective insert, form a space filled with air, as shown in Fig. 3. This increases the thermal resistance of the glove and its mechanical strength. After completing the work to extinguish the fires, the springs 4 return to their original initial position.

During the experiment, the manufactured insert was placed in the glove between the hygienic protection layer and the heat-protective layer. As the glove was heated, the springs lengthened to create a space. When the glove gripped any object, the springs provided elastic resistance and did not interfere with the work.

Thus, the advantage of the inventive protective insert is the simplicity of the design due to the small number of its constituent elements and the possession of an automatic actuation mechanism due to the use of springs made of shape memory material as actuating elements. In addition, the protective liner is compact, does not require special maintenance and is quite cheap. The protective insert can be made of any arbitrary shape.

The technical result achieved during the implementation of the utility model consists in expanding the arsenal of technical means used to protect the hands of a firefighter, in increasing the thermal resistance and mechanical strength of gloves, which are made of several functional layers, as well as in increasing the level of safety of personnel involved in extinguishing fires fire.

Claims (4)

1. Protective liner of a firefighter's glove, embedded inside a multilayer glove between the thermal protection layer and a hygienic layer adjacent to the palm, made with two layers with the possibility of forming a space between them, filled in the working position with air, while on one of the layers of the liner, springs from material with shape memory, which provides the elongation of the springs when the temperature of the spring reaches the point of transformation of the shape of its material to act on the opposite layer of the protective liner and create space, the springs are rectangular in shape and can move freely when stretched and compressed during transformation, and also have the shape of a flat rectangle in isothermal conditions, the layers of the protective liner are made of dense breathable cotton fabric and are sewn along the contour of the liner with overlock stitches that provide air flow into the inner space of the liner formed by the layers, and from the opposite On the sides, the protective liner is provided with mounting material for fixing it on the hygienic layer along the glove in the palm part. 2. Protective liner of a firefighter's glove according to claim 1, characterized in that the springs are fixed on one of the layers of the liner in a staggered manner to form a support surface in the palm of the glove. 3. A protective liner of a firefighter's glove according to claim 1, characterized in that the springs are attached to one of the layers of the liner by means of an adhesive bond. 4. A protective liner for a firefighter's glove according to claim 1, characterized in that the springs are made of nitinol.

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