RU209135U1 - VISOR BULLET-RESISTANT - Google Patents

Abstract

The utility model relates to personal protective equipment against splinters and bullets. The bulletproof visor includes three polycarbonate panels, as well as polyurethane layers located between the panels and connecting the panels to each other. The thickness of each of the polycarbonate panels ranges from 5.5 mm to 6.1 mm. In this case, all polycarbonate panels can be made of the same thickness. The thickness of the polyurethane layer is from 0.9 to 1 mm. The technical result is an increase in the bullet resistance of the visor in an extended operating temperature range from plus 50°C to minus 50°C, simplicity of design and the possibility of using one material for panels. 2 w.p. f-ly, 2 ill.

Description

The utility model relates to means of individual protection of a person from shrapnel and bullets, in particular, to the design of a bullet-resistant visor for helmets.

Known visors do not provide bullet resistance at low temperatures, typical for the vast territories of the Russian Federation, in particular, for the regions of the Arctic and Siberia.

The prior art design bulletproof visor, see patent DE 3244152 A1, 05/30/1984, IPC F41H 1/04, containing an outer panel of acrylic and an inner panel of polycarbonate, glued together with a transparent adhesive. Preferably, the thickness of the acrylic panel is 10 mm, the thickness of the inner panel is 5 mm, the thickness of the adhesive layer between the panels is 1-2 mm.

The disadvantages of the above design are:

the use of various materials to make the outer and inner shield;

increased weight of the product due to the use of acrylic;

discrepancy took protection class Br1 according to GOST R 57560-2017;

lack of bullet resistance at low temperatures.

A visor design is known from the prior art, see US patent 7841026 B2, 11/30/2010, IPC A42B 1/08, containing an outer small-area shield made of acrylic and an inner shield made of polycarbonate, glued together.

The disadvantages of the above design are:

poor visibility due to the small area of the outer shield and the transparent zone of the inner shield;

the use of various materials to make the outer and inner shield;

increased weight of the product due to the use of acrylic;

discrepancy took protection class Br1 according to GOST R 57560-2017;

lack of bullet resistance at low temperatures.

The closest analogue of the claimed utility model is the design of a bulletproof visor for PAGSGT (abbr. from the English “Personnel Armor System for Ground Troops”, “personnel armor protection system for ground forces”), known from information sources available on the Internet at the following addresses:

https://www.bulletproof-it.com/product-page/ballistic-visor-with-band-adjustment-for-pasgt-mich-and-ach-style-helmet

https://www.maxdefensecn.com/showroom/new-style-mask-cheap-devtac-bulletproof-ballistic-helmet-with-face-shield.html

The design of the bulletproof visor includes sequentially located:

polycarbonate panel 1 mm thick;

polyurethane layer 1.25 mm thick;

panel made of polymethyl methacrylate (hereinafter referred to as PMMA) 12 mm thick;

polyurethane layer 1.25 mm thick; and

polycarbonate panel 6 mm thick.

The disadvantages of the closest analogue are:

increased weight of the product due to the use of PMMA;

the use of various materials to make the outer and inner panels;

discrepancy took protection class Br1 according to GOST R 57560-2017;

lack of bullet resistance at low temperatures.

The task to be achieved by the claimed device is to create a bullet-resistant visor, characterized by bullet resistance of protection class Br1 according to GOST R 57560-2017 in an extended operating temperature range from plus 50 to minus 50 ° C, simplicity of design and the use of one material to make all panels .

The technical results to be achieved by the utility model are to ensure the bullet resistance of the visor in an extended operating temperature range from plus 50°C to minus 50°C, the simplicity of the design and the use of one material for the manufacture of all panels.

These technical results are achieved in the design of a bulletproof visor, which includes external and internal polycarbonate panels, as well as polyurethane layers located between the panels and connecting the panels to each other.

Technical results are achieved in that the visor is provided with an intermediate panel made of polycarbonate, and the thickness of each of the panels is in the range from 5.5 mm to 6.1 mm.

In this case, all polycarbonate panels can be made of the same thickness.

The thickness of the polyurethane layer is from 0.9 mm to 1 mm.

The bullet resistance of the visor of the above design in an extended operating temperature range from plus 50°C to minus 50°C was confirmed during testing.

The utility model is illustrated by the following pictures.

On FIG. 1 shows a bulletproof visor - the closest analogue;

On FIG. 2 shows the claimed bulletproof visor.

Positions on the images are indicated:

1 - claimed bulletproof visor; 2 - outer panel of the visor; 3 - inner panel of the visor; 4 - intermediate panel of the visor; 5 - a layer of polyurethane.

The proposed utility model can be implemented as follows.

Three polycarbonate visor panels are made in succession - outer 2, inner 3 and intermediate 4.

For the manufacture of panels, it is preferable to use injection molding in a mold, although other methods of obtaining a panel of a given radius are also acceptable.

The shape of the intermediate 4 and inner 2 panels is corrected in a special tooling, achieving full coincidence of the contact surfaces of adjacent panels 2, 3, 4 of the visor 1.

Panels 2, 3, 4 are assembled from polycarbonate into a package, placing between the panels a thermopolyurethane film (hereinafter referred to as TPU film) with a thickness of 0.9 mm-1 mm, from which polyurethane layer 5 is subsequently formed.

Triplexing of the assembled package of panels and TPU films is carried out in an autoclave.

The resulting block is cut to the size of the final product, holes are made for attaching the screen to the rotary locking device.

The simplicity of the design of the bulletproof visor is ensured by the implementation of all three panels from the same material - polycarbonate, with molding / casting at the same temperature and pressure parameters.

The advantage of the proposed design is also the possibility of using an outer panel made of polycarbonate with a thickness of 5.5 mm-6.1 mm as a shatterproof visor. Thus, panels for two types of visors - anti-bullet and anti-fragmentation - can be made using the same mold.

The visor is installed and attached to a ballistic helmet to protect the user's face from small arms bullets and fragments of mines and shells.

Tests of bulletproof visors made in accordance with the claimed utility model confirmed the industrial applicability of the utility model and its compliance with the claimed technical results.

Claims (3)

1. Bulletproof visor, including three panels, two of which are made of polycarbonate, as well as polyurethane layers located between the panels and connecting the panels to each other, characterized in that the third panel is also made of polycarbonate, and the thickness of each of the panels is in the range from 5.5 mm to 6.1 mm. 2. Bulletproof visor according to claim 1, characterized in that all polycarbonate panels are made of the same thickness. 3. Bulletproof visor according to claim 1, characterized in that the thickness of the polyurethane layer is from 0.9 mm to 1 mm.

Images