RU2546757C1 - Adjustment mechanism of cheek and heel of butt of small arms - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: device includes a base, a screw, an adjustment wheel, a plank and guides. Guides enter the base in the form of a magazine that on the side of one of the guides is made in the form of a clamp with moving parts pressing the above guide. In the clamp there installed is a spring-loaded element on the opposite side of which a handle-lever acting on the moving parts of the clamp is fixed.

EFFECT: simplifying and improving reliability of an adjustment mechanism, namely fixation of a cheek or a heel of a small arms butt.

4 dwg

Description

The invention relates to small arms, for example, hunting carbines or sniper rifles, and in particular to mechanisms for adjusting the stock of weapons, in particular the cheeks and the back of the butt.

Known small arms with a mechanism for adjusting the cheek of the butt (DE 137376 C, 12.20.1901), selected as an analogue. The butt cheek adjustment mechanism is a rod (b) with serrated notches in the form of a wedge. The butt cheek rod has the ability to move up and down and is fixed by means of wedge clips (i) included in the serrated notches. The disadvantage of the adjustment mechanism is that the butt cheeks are not securely fixed, especially when the butt cheek is shifted up.

A known mechanism for adjusting the nape of the butt of a small arms (SN 96889 A, 31.16.1922), selected as an analogue. The mechanism for adjusting the butt of the butt, namely, the displacement of the neck (b) up and down, is carried out by means of a latch (k) made in the body of the butt. The latch (k) in a fixed (closed) position pushes the back of the head (b) to the butt. In the position where the latch (k) is released (loose), the back of the head (b) is released and moves up and down with respect to the guide (a1). The disadvantage of the adjustment mechanism is the insufficiently secure fixation of the butt of the butt.

A known mechanism for adjusting the elements of the butt of small arms (DE 3743092 A1, 07/07/1998), in particular the back of the head, selected as the closest analogue (prototype). The butt adjustment mechanism, in particular the nape, contains a screw (58), at the end of which a nape is fixed, and an adjustment wheel (62). The butt of the butt is moved by means of the adjusting wheel (62). At the same time, the adjusting wheel (62) is fixed from being accidentally scrolled by a spring ball, and the screw (58) is additionally tightened by the screw (64), under which a separate adjusting tool is provided. The disadvantage of the butt adjustment mechanism is the complexity of the design.

The technical result of the claimed invention is to simplify and increase the reliability of the adjustment mechanism, in particular the fixation of the cheeks and / or neck of the butt of a small arms.

The technical result is ensured by the fact that the mechanism for adjusting the cheek or the back of the butt of the small arms contains a base, a screw, an adjustment wheel, guides and a bar, while the guides enter the base in the form of a holder, which on the side of one of the guides is made in the form of a clamp with moving parts, pressing the specified guide. A spring-loaded element is installed in the clamp, on the opposite side of which there is a handle-lever acting (expanding and compressing) on the moving parts of the clamp.

The essence of the invention is illustrated by drawings:

figure 1 is a front view;

figure 2 is a left view;

figure 3 is a top view;

figure 4 is an isometry.

The adjusting mechanism of the small arms stock contains a base in the form of a holder 1, screw 2, adjusting wheel 3, guides 4, cheek strip 5, spring element 6 (screw), clamp 7, lever handle 8, lock nut 9, pin 10, spring 11 .

The base in the form of a holder 1 is made so that on the side of one of the guides there are two movable parts forming a clamp 7. The movable parts of the holder 1 must then press the specified guide 4 to fix the cheek or the butt of the butt. In the clamp 7 on the axis is a spring-loaded element 6, for example, made in the form of a screw. On one side, a lock nut 9 is screwed onto the spring element 6 (screw) to fix it in the clamp 7. The lock nut 9 is surrounded by a lever handle 8, which is fixed by a pin 10, which enters the hole for the pin 10 in the body of the spring element 6 (screw) . There is a small free distance between the handle-lever 8 and the housing of the movable part of the clamp 7, designed to allow the handle-lever 8. to be rotated. On the other side of the spring element 6 (screw), a spring 11 is located on the side of its inner end of the cap and the clamp body 7.

The work of the adjusting mechanism of the cheeks or the nape of the butt of small arms is as follows. When the position of the butt cheek is adjusted by rotating the adjusting wheel 3 and the selected position needs to be fixed, the shooter turns the lever handle 8, latching it all the way. In this case, the spring-loaded element 8 (screw) is pressed against the clamp body 7, choosing the free movement of the spring 11 and the necessary free distance between the handle lever 8 and the housing of the movable part of the clamp 7. The movable parts of the clamp 7 are closed, pressing the specified guide 4, preventing its inadvertent displacement. The handle-lever 8 itself is fixed when turning to the closed position due to the displacement of the center of the axial load relative to the axis of attachment of the handle-lever 8 to the pin 10. Due to the possible weakening of the spring 11 during the operation of the weapon, it is possible to adjust the compression force of the clamp 7 and, therefore, securely fix handle-lever 8 by means of a spring-loaded element 6 (screw). In addition, from the inside of the handle-levers 8, a recess is made for the adjustment wheel 3. In the closed position, the handle-lever 8 closes the adjustment wheel 3, which is included in the specified recess.

Claims (1)

A mechanism for adjusting the cheek or nape of a small arms butt, comprising a base, a screw, an adjusting wheel and a bar, characterized in that the adjustment mechanism comprises guides included in the base in the form of a holder, which, on the side of one of the guides, is made in the form of a clamp with movable parts pressing the specified guide, while in the clip a spring-loaded element is installed, on the opposite side of which a handle-lever acting on the moving parts of the clip is fixed.

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