RU153942U1 - VEHICLE PROTECTIVE SCREEN - Google Patents

Abstract

A vehicle protective screen comprising a rectangular box-shaped frame with two flat, perforated horizontal viewing slots placed therein with the possibility of vertical reciprocating movement and equipped with guide sleeves of circular cross section along the vertical ends, rectangular armor plates, the position of which is fixed with a threaded ladder connection, and the horizontal ends are rigidly mated by helical springs with the inner surfaces of the horizontal ntal shelves of the frame, while the total stiffness of the springs of the armor plates is different, the attachment points are support racks, one ends of which are rigidly attached to the vertical walls of the frame with the wing screws, and the other ends are pivotally fastened to the body of the vehicle through the support heels.

Description

The utility model relates to the field of automotive industry, namely to transport safety devices (protecting the driver and passengers) used when operating the vehicle under the influence of small arms bullets, fragments of explosive devices (mines, ammunition) on it.

When using vehicles under the influence of small arms bullets and fragments of explosive devices, it becomes necessary to protect the driver and passengers from them. At the same time, visibility is a prerequisite for road safety. [1] Therefore, the development of screens should provide not only protection from the damaging elements of kinetic action, but also visibility, without which the safe movement of the vehicle is not possible.

Known methods of bulletproof and anti-fragmentation protection of personnel and vehicles by attaching on their spatial frame armor plates. [2]

The disadvantages of this technical solution is the lack of protection of the windshield of the passenger compartment (cabin) of the vehicle.

There are various designs of single and multi-layer bulletproof glass to protect people in vehicles that do not interfere with the external view from the inside of the vehicle. [3] They are widely used in army vehicles and in armored vehicles.

The disadvantages are the high cost of such glasses, as well as the fact that when a bullet or a fragment hits a bulletproof glass, it is covered by a network of small cracks that reduce the driver’s field of vision and visibility (up to the impossibility of further movement), which reduces road safety.

Known shield [4], containing an armor plate made of resistant to the effects of bullets and fragments of ammunition material. It is made of a flat or curved sheet having perforated sections. The overview of the space due to the shield is carried out within the perforated zone (the ratio of perforation to the full surface is 1: 2 ... 1: 4). The perforation coefficient is adopted based on the ratio of perforation to the full surface within the perforated zone of the side of the shield opposite to the observer.

The disadvantage of this device is that while the vehicle is moving, visibility and visibility through the openings of the perforated area for the driver is limited.

The closest analogue is a safety device for a vehicle, which includes a protective screen in the form of two flat rectangular armor plates perforated with viewing slots with viewing slots. The sheets are enclosed in an armored frame and have a drive mechanism that provides simultaneous reciprocating movement of the armor plates in diametrically opposite directions. In this case, the frequency of flickering of viewing slits is higher than the threshold of sensitivity of the human eye. [5]

The disadvantage of this device is its low structural reliability, which is due to the high probability of failure of the drive mechanism, which incorporates a series of structural elements (parts, assemblies). Failure of many of these drive elements will lead to failure of the drive itself and the entire device as a whole. In addition, a failure can be caused by the impact on the drive elements of small arms bullets and fragments of explosive devices.

The presented device is taken as a prototype.

The purpose of the utility model is to increase the reliability of the protective screen.

To achieve this goal, the task of creating a device that does not have a drive mechanism, and the reciprocating movement of the armor plates is provided due to the vertical vibrations of the vehicle caused by its movement on the road (off-road).

The proposed device is illustrated by drawings, presented on:

- FIG. 1 is a front view;

- FIG. 2 is a side view (section along AA);

- FIG. 3 is a side view (section along BB);

- FIG. 4 is a top view;

The protective screen (Fig. 1, 2) is a box-shaped rectangular frame 1 (for example, welded) made of armor material. In the frame 1 with a gap above and below, rectangular protective armor plates 2 and 3 are placed, in each of which through horizontal longitudinal viewing slots are made 4. The dimensions of the viewing slots of 4 armor sheets 2 and 3 are equal in size, and are placed along the height of the sheet with the same pitch so that adjacent slots 4 in the absence of movement of the vehicle in the horizontal plane coincided in the light.

The vertical ends of the armor plates 2 and 3 along the length are rigidly coupled (for example, by welding) with the guide bushings 5 of the annular section (Fig. 1, 2, 4). The position of the armor plates 2, 3 relative to the frame 1 is fixed by step-rails 6, inserted with a gap into the through holes made coaxially in the upper and lower flange of the frame 1 (Fig. 4), through the guide bushings 5 of the armor sheets 2 and 3, using a threaded compound 7.

Between the inner surfaces of the frame 1 and the ends of the armor plates 2 and 3 there are cylindrical steel springs 8 that are rigidly attached on one side to the inner surfaces of the shelves of the frame 1 (along their entire length), and on the other hand, to the horizontal ends of each of the armor sheets 2 and 3 (Fig. 1, 2). The stiffness of the springs 8 (or the number with equal stiffness) of the armor plate 2 and the armor plate 3 are different.

The attachment points of the protective screen (Fig. 3, 4) are support racks 9, which, with the help of thumb screws 10, can be mounted externally to the vertical walls of the frame 1 with the possibility of changing the length of their supporting part, in which the threads are made in the upper and lower parts holes. On the opposite side, the supporting posts 9 are pivotally attached to the supporting heels 12 with screws 11, in which holes are made for fastening to the vehicle body. Through such attachment points, the protective shield can be mounted on any vehicle, and if necessary, dismantled.

The proposed device operates as follows.

Fasteners are attached to the protective screen using the wing screws 10 (Fig. 3, 4), but are not finally fixed. The support heels of the 12 attachment points are rigidly attached (for example, using the screw-nut connection) through the holes made in them to the vehicle body in front of the protected window opening. The position of the screen is adjusted by changing the length of the support part of the support posts 9 and the position of the hinges of the support heels 12, and is finally fixed by the thumb screws 10 and screws 11. The device is ready for operation.

In the stationary position of the vehicle, the protective screen is at rest. The armor plates 2 and 3 in accordance with their own weight and occupy relative to the frame 1 the equilibrium position set by the total stiffness of the springs 8 in this way. At the same time, adjacent viewing slots 4, made in armor plates 2 and 3, coincide in the horizontal plane, which ensures visibility by the driver of the road traffic situation when stopping and parking.

When the reaction moves from the roughness of the road surface (off-road) are transmitted to the vehicle in the form of vertical, longitudinal, transverse and angular vibrations. [6] Depending on the size of the sprung mass of the vehicle, the micro- and macroprofile of the road surface, the stiffness and damping properties of the suspension, the resulting vertical vibrations from the vehicle’s body are transmitted through the struts 9 to the protective shield frame 1, from where through the springs 8 to the armor plates 2 and 3, causing them to reciprocate. Guide sleeves 5 are moved along the ladder-guides 6, providing the course of the armor plates 2 and 3.

The travel speeds (oscillation frequency) of the armor plate 2 and the armor plate 3 are different relative to the frame 1, since the calculated total stiffnesses of their springs are uneven 8. Therefore, the armor plates 2 and 3 move reciprocally stochastically either in one direction or towards each other, opening or blocking the viewing slots 4 in the light in the horizontal plane, and ensuring the protective properties of the screen while ensuring the driver’s visibility of the road traffic situation. Dismantling the device is carried out in the reverse installation sequence.

The proposed device is simple in execution, does not have a drive mechanism, therefore, it can be used more reliably and can be used as a vehicle protection under the influence of small arms bullets and fragments of ammunition and mines without affecting the visibility and visibility of the road traffic situation.

Used sources:

1. Kuperman A.I. the art of driving: Reference, allowance / A.I. Cooperman, M.B. Afanasyev: - M.: Higher. school, 2003 .-- 263 p.

2. Pat. RF №2082634 C1 Russian Federation IPC ⁶ B60R 21/12, B62D 33/00, F41H 7/02. A vehicle primarily for transportation of valuables / A.A. Anakhin, V.V. Makovetsky, V.D. Shorin. No. 93021681/02; Application 04/26/1993, publ. 06/27/1997.

3. RF patent No. 2465536, C2 Russian Federation IPC F41H 5/04, ЕВВ 5/12, B60J 1/02, В32В 3/06, В32В 7/02, В32В 17/06. Bulletproof glass / McCARTY Dennis P. (US), MILLER John P. (US) No.2010139510 / 11; Application 02/25/2009, publ. 10/27/2012.

4. RF patent No. 2198372, C2 Russian Federation IPC ⁷ F41H 3/00, F41H 5/08. Shield (options) / N.G. Shakhvorostov, Y.Ya. Khadzhieva, S.A. Reznichenko, V.F. Volynsky, B.V. Pustynin No. 2000118273/02; Application 07.17.2000, publ. 02/10/2003.

5. RF patent No. 138979, U1, Russian Federation IPC F41H 5/00. Safety device for a vehicle / O.A. Matveev O.A., A.Yu. Dashchenko, A.P. Trofimov, G.I. Shibaev, D.A. Kovachev No. 2013144883/11, Application 07.10. 2013, publ. 03/27/2014, bull. No. 9.

6. Vakhlamov V.K. Cars: Design and elements of calculation / V.K. Vakhlamov. - M.: Academy, 2006 .-- 480 p.

Claims (1)

A vehicle protective screen comprising a rectangular box-shaped frame with two flat, perforated horizontal viewing slots placed therein with the possibility of vertical reciprocating movement and equipped with guide sleeves of circular cross section along the vertical ends, rectangular armor plates, the position of which is fixed with a threaded ladder connection, and the horizontal ends are rigidly mated by helical springs with the inner surfaces of the horizontal ntal shelves of the frame, while the total stiffness of the springs of the armor plates is different, the attachment points are support racks, one ends of which are rigidly attached to the vertical walls of the frame with the wing screws, and the other ends are pivotally fastened to the body of the vehicle through the support heels.

Images