WO2014104922A1

WO2014104922A1 - Adaptive firearm stock

Info

Publication number: WO2014104922A1
Application number: PCT/RU2013/000183
Authority: WO
Inventors: Александр Евгеньевич КОЗЬМИН
Original assignee: Общество С Ограниченной Ответственностью "Промтехнология"
Priority date: 2012-12-27
Filing date: 2013-03-12
Publication date: 2014-07-03

Abstract

The invention relates to firearm stocks, and specifically to the stocks of biathlon rifles. An adaptive stock is provided on a rigid metal frame. The angle of the butt can be adjusted in longitudinal section along a vertical plane, and the length can be adjusted by means of guides, with the possibility of horizontal displacement. The butt includes a securing element which is detachable and height-adjustable. The height of a cheekpiece can be adjusted by means of guides, the angle of the cheekpiece can be adjusted in the transverse and longitudinal sections, and the cheekpiece can be displaced horizontally in directions perpendicular to the longitudinal axis thereof. A grip can be length-adjusted and also adjusted horizontally, perpendicular to the vertical plane passing along the axis of the barrel of the firearm. The angle of a forearm can be adjusted in longitudinal section along a vertical plane. A front-hand support is provided on the trigger guard, can have its length and height adjusted and can be turned horizontally relative to the trigger guard. A firearm stock is thus adaptable to the individual needs of a shooter.

Description

Adaptable box of small arms

The invention relates to the field of weapons technology, namely to the boxes of small arms, for example, biathlon rifles.

The small arms box is a modular modular design with the ability to configure and replace individual components for maximum shooter convenience.

The closest analogue (prototype) of the utility model is an adaptable small arms box according to patent FR 2811419 A1, 1 January 1, 2002. The adaptable bed is made on a rigid metal frame and consists of a fore-end, support under the front hand, handle, butt, cheek and back of the butt. The butt of the butt has the ability to change the slope along the length (in a longitudinal section along a vertical plane), and also has a locking element (hook). The butt cheek is height-adjustable by means of guides, has the ability to change the slope both in the cross section and in length (in the longitudinal section along the vertical plane), has the additional possibility of horizontal displacement in the directions perpendicular to its longitudinal axis. The handle is adjustable in length and also horizontally perpendicular to the vertical plane passing along the axis of the barrel of the small arms. The forend has the ability to change the slope in a longitudinal section along a vertical plane. The support under the front arm is placed on the forend, adjustable in length and height. The disadvantages of the closest analogue (prototype) are that the box is made with insufficient adjustments for accurate and effective shooting. For example, the support under the front arm is placed on the forend, the fulcrum of which is remote from the center of gravity of the rifle, which leads to insufficient rigidity rifles during accurate shooting due to insufficient hand bend of the shooter and, consequently, to the possibility of the rifle falling off during firing. In addition, in the closest analogue (prototype) there are no adjustments to the nape of the butt and the fixing element (hook).

The technical solution consists in expanding the adjustments of the adaptable small arms box, which has interchangeable adaptable (adjusting) units located on the supporting frame. The technical result consists in improving the adaptation of the small arms box to the individual needs of the shooter.

The technical solution is achieved by the fact that the bed of small arms, made on a rigid metal frame and consists of a forearm, support under the front hand, handles, butt, cheeks and butt of the butt. The butt of the butt is adjustable in length by means of guides and has the ability to vary the slope along the length (in a longitudinal section along the vertical plane), in addition, the neck has the ability to move horizontally perpendicular to the vertical plane running along the axis of the gun barrel. The butt of the butt has a locking element (hook), designed for additional fixation of the butt in the shoulder arrow. The locking element (hook) is made removable with adjustable height. The butt cheek is height-adjustable by means of guides. The butt cheek has the ability to change the slope both in cross section and in length

(in longitudinal section along a vertical plane). In addition, the cheek has the additional possibility of horizontal displacement in the directions perpendicular to its longitudinal axis. Lever adjustable in length and also horizontally perpendicular to a vertical plane passing along the axis of the barrel of small arms. The forend has the ability to change the slope in a longitudinal section along a vertical plane. In this case, the forearm or butt made with the possibility of placing removable pads under the cartridge magazine. The support under the front arm has an anthropometric shape and is placed on the trigger bracket, is adjustable in length and height, and also has the ability to rotate horizontally relative to the trigger guard.

Adaptation of the butt cheek is provided by the cheek adjustment unit with interchangeable cheek pads. The movement of the cheek in height (up and down) occurs by moving the guides along the steel bushings of the butt base with fixing them with a clamp using a screw. Special notches are made on the guides to facilitate the search for position during adjustment. The construction of the cheek adjustment base allows the horizontal movement of the cheek in the directions perpendicular to the longitudinal axis of the butt cheek (left and right) and has the ability to change the inclination (angle of rotation) of the cheek in the cross section and length (in the longitudinal section along the vertical plane). The cheek lining can easily be changed to another lining.

Adaptation of the butt of the butt is provided by the neck adjustment mechanism, most of the details of which are unified with the cheek adjustment unit to achieve greater convenience and ease of operation. The movement of the nape along the length (back and forth) is carried out by moving the guides along the bushings of the butt base with fixing with two set screws. To increase the contact area on the rails, platforms are milled. Neck adjustment mechanism identical in design the cheek adjustment unit and allows you to change the inclination (angle of rotation) of the nape along the length (in longitudinal section along the vertical plane), and also has the ability to move horizontally perpendicular to the vertical plane running along the axis of the barrel of the small arms, which provides better adaptation of the nape to the characteristics of the shooter. Moving the whole lower neck hook relative to the bar itself in height (in the vertical plane) allows you to choose the optimal distance between the upper bend and the neck hook under the shoulder arrow. The hook is removed by unscrewing one screw to replace the hook with another shape more suitable for the shooter. For greater comfort during operation, the neck strap is provided with a rubber pad.

Adaptation of the handle of the box provides the ability to move the handle along the length (back and forth). The movement occurs by loosening the two screws that are screwed into the steel grommets of the handle and by shifting the handle along the base of the butt. It is also possible to change the anatomical handle to another for an individual grip shooter. The presence of a developed back ensures a comfortable fit close to the wrist of the palm, which is classic for biathlon lodges, without the possibility of touching the metal frame. The shape of the pistol grip plays a large role in the descent technique, so it is adjusted individually for each shooter.

Adaptation of the arm support when shooting while standing is provided by moving the "champignon" mechanism in length (front-back) and height (up-down), and also has the ability to rotate horizontally relative to the trigger guard. The fastening of the mechanism on the basis of the butt additionally freed up space for comfortable retrieval of stores, as well as the removal of the receiver boxes from the box. The design of the mechanism allows a simple and quick replacement of the lining of the support for the implementation of various grip stocks, as well as for changing it to the lining with a shape more suitable for the shooter.

Adaptation of the forearm of the box is provided by changing its slope in a longitudinal section along a vertical plane (in length) relative to the base of the forearm. The design of the forend adjustment mechanism provides for a simple replacement of the forearm lining with a new lining of a different anatomical shape, as well as lining with the possibility of installing spare stores in it. In addition, holes for carrying additional cartridges are located in the forearm pad. Any of the wooden linings can be modified by the shooter independently to improve ergonomics.

The main advantage of the frame structure is that in case of irreversible damage to any node of the box, for example, in the event of a fall or too much development during fitting, there is no need to redo the entire box, just replace the pad or, in extreme cases, the assembly.

The ability to install various linings for stores allows you to ensure the location of spare stores either in front or in the back of the box at the request of the shooter.

The essence of the utility model is illustrated by the following illustrations:

Figure 1 General view of the box from the side.

Figure 2 General view of the box from above.

Fig. 3 Cheek adjustment at the back.

Figure 4 Adjustment of the cheeks on the side.

Figure 5 The clamping mechanism of the guide cheeks in cross section.

6 Adjustment of the nape on the side. Fig.7 Adjustment of the neck from the top.

Fig. 8 Adjustment of the support in longitudinal section.

Fig.9 Adjustment of the support in cross section.

Figure 10 Adjustment of the forearm in cross section.

Figure 1 1 Adjustment of the forearm in cross section along the axis of rotation.

Fig. 12 Adjustment of the handle.

Fig. 13 Adjustment of the handle in cross section.

A rifle 1 is attached to the adapted box (shown schematically).

The box contains a frame 2, a handle 3, a forearm 4, a support 5, a butt pad 6, a neck strap 7, an abutment 8, a cheek 9, a side pad 10, a base 1 1, a guide 12, a nut 13, a guide screw 14, a hinge 15, a screw 15, a screw base 16, clamp 17, clamp screw 18, guide bushing 19, screw bushing 20, forend adjustment screw 21, strap screw 22, clamp screw 23, rubber pad 24, stop screw 25, stand 26, strap 27, carriage 28, support screw 29, strap screw 30, strut screw 31, carriage screw 32, forend 33, neck nut 34, crank screw 35, spacer 36.

Adaptable box works as follows.

Interchangeable and adjustable elements, such as handle 3, forend 4, support 5, butt pad 6, neck plate 7 with focus 8, cheek 9 and side plate 10 are attached to the aluminum frame 2.

Cheek 9 can be adjusted in four directions. In order to raise or lower the cheek, it is necessary to loosen the clamp screw 18, which will weaken the fixation of the guides 12 between the clamp 17 and the metal bushings of the rail 19. By pulling the cheek 9 up or down and fixing it later, it is possible to adjust the inclination of the cheek along the longitudinal section along the vertical plane . To tilt cheek 9 at an angle in cross section - you need to loosen the screws the guide 14, which will reduce the fixation of the guides 12 with the hinges 15. To fix the hinge 15 with the base 1 1, use the nut 13. Next, turn the nut 13 to the desired angle and tighten the screws of the guide 14. To move the cheek 9 to the right or left horizontally in the directions perpendicular the longitudinal axis of the cheek 9, you need to loosen the screw of the base 16, which fixes the base 1 1. It will be possible to move the cheek 9 with the screws of the guide 14 along the grooves in the base 1 1.

The back of the box can be adjusted in four directions. In order to move the stop 8 relative to the neck plate 7, it is necessary to loosen the screw of the stop 25, which fixes it in one or another position. Further, the stop 8 with the stop screw 25 can be moved along the groove in the neck 7 in height (up or down). In order to extend or push the back of the head, i.e. to move the nape along the length, it is necessary to loosen the clamping screws 23 located in the metal sleeve of the screw 20, similar to the cheeks 9, which will weaken the fixation of the guides 12 between the clamping screws 23 and the metal bushings of the guide 19. To tilt along the length (in the longitudinal section along the vertical plane) of the neck plate 7 it is necessary to vary the guides 19 by loosening the screws of the guides 12, which will reduce the fixing of the guides 12 with the hinges 15. To fix the hinge 15 with the base 1 1, nut 13 is used. emestit nape strap 7 to the right or left in the horizontal perpendicular to the vertical plane passing along the axis of the trunk of small arms, the nape loosen nut 34 which fixes the neck strap with a base. It will be possible to move the neck plate 7 with the neck nut 34 along the grooves in the base 1 1. On The neck plate 7 is equipped with a rubber pad 24 to soften the contact of the shooter with the stock.

The support 5 can be adjusted in three directions. In order to lower or raise the support 5, it is necessary to loosen the screws of the rack 31, which fix the rack 26 in the grooves of the frame 2. To move the support 5 forward or backward, loosen the screws of the carriage 32, which fix the carriage 28 in the grooves of the bar 27. The rack 26 is pulled to the bar 27 using the screw of the strap 30. When adjusting the support along the length or height, it is possible to achieve turning the support horizontally relative to the trigger guard.

The forend 4 has the ability to change the slope in a longitudinal section along a vertical plane. For this, it is necessary to loosen the adjustment screws of the forend 21 and the screws of the bar 22 that fix the forend 33 with the frame 2. The forend 33 and the forearm 4 attached to it will be able to change the tilt on the axis of the screws of the bar 22.

To adjust the handle 3, it is necessary to loosen the screws of the handle 35, which fix the handle 3 with the frame. It will be possible to move the handle 3 along the length (forward and backward) along the grooves in the frame. To offset the handle 3 horizontally (right or left) perpendicular to the vertical plane passing along the axis of the barrel of the small arms, spacers 36 are used, which are installed between the frame 2 and the handle 3 and are located on the screws of the handle 35.

Claims

Claim

1. Adaptable box of small arms, made on a rigid metal frame and consists of forend, support under the front arm, hand grip, butt, cheek and nape of the butt, the nape has the ability to change the slope in the longitudinal section along the vertical plane, the butt cheek is height-adjustable by means of guides and has the ability to change the slope both in the cross section and in the longitudinal section along the vertical plane, the cheek has the additional ability to shift horizontally in the directions perpendicular x its longitudinal axis, the handle is adjustable in length and also horizontally perpendicular to the vertical plane passing along the axis of the small arms barrel, characterized in that the butt of the butt is adjustable in length by means of guides and has the ability to shift horizontally perpendicular to the vertical plane along the axis of the barrel small arms, the back of the butt also contains a locking element for additional fixation of the butt in the shoulder, which is removable with the ability to adjust height, fore-end has the ability to change the slope in the longitudinal section along a vertical plane, a support under the front hand is placed on the trigger guard, adjustable in length and height, but also has the ability to rotate horizontally relative to the trigger guard.

2. Adaptable box of small arms according to claim 1, characterized in that the forend or butt is made with the possibility of placing removable pads under the cartridge magazine.