RU180136U1 - TRANSITION BRACKET FOR MOUNTING OPTICAL SIGHTS ON WEAPONS - Google Patents

Abstract

The invention relates to transition arms for small arms. The adapter bracket for mounting optical sights on a weapon consists of left and right brackets, which are mounted on the weapon seat, respectively, on the left and right side with tightening screws, the contour of the upper surfaces of the brackets forms a profile of the upper mounting base for sights, such as "Picatinny "," Weaver ", and the lower surface contour when tightening the screws forms the dovetail mounting base profile, which is used to mount the adapter bracket on the weapon. In the case of each bracket in the middle part between the lower and upper mounting base, mutually perpendicular threaded holes are made in the horizontal and vertical planes perpendicular to the longitudinal axis of the bracket, into which the set stop screws are screwed, blocking angular and linear movements when tightening the tightening screws. Vertical screws having flat ends abut against the upper surface of the lower mounting base, and horizontal screws also having flat ends abut against the inner vertical surface of the opposite bracket. The technical result is the expansion of the scope of the bracket due to structural changes. 11 ill.

Description

The utility model relates to the field of small arms, in particular to the class of hunting weapons having a seat for the installation of optical sights.

Currently, for mounting optical sights to weapons, in most cases, the use of trunks such as "Dovetail", "Picatinny", "Weaver", "Eurprism" and others, which are installed on the receiver or made directly on it. Accordingly, the optical sights have the same mount.

Recently, the most popular among hunters are small-sized, inexpensive optical collimator sights. For accurate aiming, it is enough to aim the arrow and hold on the target a light spot of the reticle formed by a reflector located in the sight window of the sight housing.

In some cases, for mounting optical sights, including collimator sights, it is possible to install low-profile, small-sized brackets or trims on the receiver of the guns so that they do not interfere with aiming through a mechanical sight without removing them.

This is possible if the mounting base on the receiver is placed slightly below the aiming line through a mechanical sight - a front sight located on a ventilated bar or on the gun barrel.

In our country and neighboring countries, hunting guns of the MP-155 brand are widely popular, the production of which was started by the Izhevsk Mechanical Plant several years ago. At the rear of the receiver of the MP-155 hunting rifle, a dovetail -13 mm mounting base is made, which is located at ~ 5 mm. below the line of sight of the vented bar. Most collimator sights currently have a “Picatinny” or “Weaver” mounting base, so an adapter bracket or bar is required to mount them on the receiver of the MP-155 rifle. Since the receiver is made of aluminum alloy, it is not advisable to reinstall the adapter bracket many times.

Equipping hunting rifles with a transitional low-profile and small-sized bracket for installing collimator sights is an urgent and popular task from consumers (hunters).

There are several devices for mounting optical sights with the installation base "Picatinny", "Weaver" on hunting weapons with an upper mounting base "dovetail".

Among them, as analogues can be distinguished:

1. The adapter bracket Leapers UTG MNT-PMTOWL, shown in figure No. 1. The bracket is designed to create a Weaver (Picatinny) base on airguns and firearms with a dovetail top base. The bracket has an adjustable locking screw that prevents longitudinal movement of the bracket along the base of the weapon.

2. The transition bracket ECT Weaver U, shown in figure No. 2.

The bracket is a universal product and allows you to install an optical, collimator or night vision sight with Weaver and Europrism mounts on weapons equipped with a dovetail seat (Sable, TOZ-78, etc.) or made in the form of two seats having ( Elk-7, Elk-9) or those without a direct approach (Bekas-Avto, etc.).

The Weaver U transition base can be mounted on weapons with a maximum dovetail height of 3.5 millimeters and a dovetail width of 8 to 11.5 millimeters.

3. The bracket adapter патент US4890407, 01/02/1990, USA, shown in figure No. 3.

The bracket is designed for installation of collimator, optical, prismatic and other sights equipped with dovetail mounts on pistols and other small arms having various bracket mount elements (dovetail, grooves on a semicircular surface, threaded holes ...). The bracket consists of 2 parts, which are tightened by tightening screws 20, 22, 24, 26 to each other with inner surfaces 32, first in the upper part, then leaving a gap in the lower part, in order to fix the bracket on the surface of the gun’s seat or other weapons. To prevent bracket displacements along the barrel due to shock loads during firing, screws 38 are used, which are screwed into the counter holes on the weapon and screws 42, which are screwed into the threaded sleeves 36, which enter the lower wide part into the mounting grooves on the weapon, thereby pressing the bracket to horizontal plane of the weapon mounting base.

4. The bracket патент U 202004003173 U1, 02.26.2004, Germany, is shown in figure No. 4.

The bracket is designed to mount collimator, optical, and other sights equipped with a dovetail mount on a sporting small arms with a dovetail mounting base, with the aim of more convenient aiming, from the point of view of preserving posture, by raising the sight above the receiver of the weapon. The bracket consists of 2 parts 1, 2, which are tightened by tightening screws 5, 6 to each other with internal surfaces. Moreover, in the upper part of the bracket forms a dovetail profile, which is a mirror image of the lower dovetail profile. Additionally, parallel to the screws 5, 6, guide pins 3, 4 are installed.

The brackets shown in paragraphs 1, 2 have movable elements in their design, the use of which leads to a decrease in the reliability of their fastening to weapons, an increase in dimensions and, as a result, to a decrease in the scope.

The brackets given in paragraphs 3, 4 can be adopted as prototypes. They consist of 2 brackets, which when installed on a weapon are tightened with screws and in the upper part form the outline of the installation base. A common drawback of these brackets is that in the case of the formation of a weapon in the upper part of the gap between the brackets when installing them on the mounting base and tightening the clamping screws on the sight, the clamping screws of the bracket are subject to bending stress (force), which can lead to their deformation during conducting shooting and loosening the bracket. This was confirmed by the test results of the brackets, made according to a similar scheme, on the hunting rifle MP-155 at the test bench of the Izhevsk Mechanical Plant.

Closest to the proposed device in terms of the parameters selected as the closest analogue (prototype) is a device for mounting optical sights on weapons having a top ventilated bar, RF patent for invention No. 2478180 with priority dated January 26, 2011. The device is shown in figure number 5. The device consists of a bracket for left 1 and right 2, which are connected to each other by tightening screws 3. The screws are inserted into the holes of the brackets and rectangular grooves of the vented bar of the gun.

When tightening the screws, 3 brackets are tightly pressed to the ventilated strip, and their external surfaces in the upper part form the contour of mounting bases of the Picatinny, Weaver type on which sights are mounted, and in the lower part the contour of the vented bar due to the bosses made, whose flat surfaces in contact with one vertical and horizontal surfaces of the inner rectangular grooves of the ventilated strip and thus limit the movement of the brackets in the horizontal and vertical direction. A device for attaching optical sights with a clip of the type "Picatirmy" / "Weaver" in assembly and on a hunting rifle IZH-27 is shown in figures No. 6, No. 7.

The purpose of this utility model is to expand the scope of application of brackets selected as an analogue by introducing changes to its design.

This goal is achieved due to the fact that in the proposed bracket the lower mounting base is made in the form of a "dovetail", and in the middle part between the lower mounting base and the upper there are mutually perpendicular threaded holes in the horizontal and vertical planes perpendicular to the longitudinal axis of the bracket, in which set stop screws are screwed, blocking the angular and linear displacements (stresses) arising during firing.

Vertical screws having flat ends abut against the upper surface of the prism or slats of the lower mounting base, and horizontal screws also having flat ends abut against the inner vertical surface of the opposite bracket. The screws can be located both on the axis and below or above the axis on which the tightening screws are located. The screws are distributed along the entire length of the bracket and, when tightened, keep the width of the gap between the left and right brackets constant and thereby block the linear movement of the brackets relative to each other when tightening the tightening screws.

The essence of the claimed device is illustrated by figure No. 8.

An adapter bracket for mounting optical sights on weapons with a dovetail mounting base on the top surface of the receiver is shown in Figure 8, consists of 2 symmetrical brackets: left - 1 and right - 2, which are connected to each other by screws - 3.

In each bracket, in the middle part of the body, mutually perpendicular threaded holes are made in the horizontal and vertical planes perpendicular to the longitudinal axis of the bracket. The holes (screw) 4, 5 are screwed into the holes.

Brackets as shown in FIG. 11 are installed in the grooves of the dovetail on the left and on the right side. Then the brackets are shown in FIG. 8, tightened with screws 3.

When tightening the screws 3, the brackets are pressed against each other by the inner surfaces, while the upper contour of the surfaces of the brackets forms the external contour of the mounting bases of the Picatinny / Weaver type, and the lower contour of the surfaces of the brackets forms the internal contour of the mounting base of the dovetail type. The dovetail mounting base for mounting sights is carried out on weapons with certain tolerances and therefore has a spread in width and height of the prism. Due to this, when brackets are installed on the weapon, including those specified in clauses 3, 4 (shown in Figs. 3, 4), a gap of a certain width is formed between the left and right brackets. The gap is clearly visible on the bracket, FIG. 11 mounted on the MP-155 shotgun. When installing the sight on the indicated and similar brackets, when tightening the clamping screws under the action of the arising stresses, the brackets may shift relative to each other in this gap, both linear and angular. As a result, the strength of the brackets on the side faces of the prism of the mounting base will decrease. For this reason, when shooting, the sight may shift from the barrel of the weapon, which will affect the final results.

To prevent angular displacements of the left and right brackets relative to each other, vertical screws 5 are used, as shown in FIG. 8 having flat ends with which they abut against the upper surface of the prism of the mounting base. The screws are distributed over the entire surface of the prism and, when tightened, firmly press the inner faces of both brackets to the side faces of the mounting base prism and thereby block angular stresses and prevent the brackets from moving relative to each other when tightening the tightening screws 3. To prevent linear displacements of the left and right brackets horizontal screws 4 are used relative to each other, as shown in FIG. 8, also having flat ends, with which they abut against the vertical surface of the opposite bracket. The screws are distributed along the entire length of the bracket and, when tightened, keep the width of the gap between the left and right brackets constant and thereby block the linear movement of the brackets relative to each other when tightening the tightening screws 3.

Thus, the transitional bracket proposed for registration as a utility model makes it possible to firmly mount optical sights on the weapon’s seat, such as a dovetail.

For a hunting rifle of the MP-155 brand, the installation base, made in the rear of the receiver, is located ~ 5 mm below the aiming line of the ventilated bar. Based on the claimed utility model, brackets ETMI-023 are manufactured. The brackets in assembly and on the MP-155 are shown in FIG. 9, 10, 11.

The design of the brackets uses 3 tightening and 5 persistent screws with a diameter of 3 mm, which determine the thickness of the horizontal flat boss in which they are installed. The thickness of the boss is 5 mm, and when the bracket is mounted on the dovetail MP-155, it does not close the aiming plate of the gun.

The practical tests and firing of the MP-155 rifle in the field fully confirmed the advantage of the design solutions incorporated in the claimed utility model.

Claims (1)

An adapter bracket for mounting optical sights on a weapon, consisting of two parts - the left and right brackets, which are installed on the weapon seat, respectively, on the left and right side with the help of tightening screws, while the contour of the upper surfaces of the brackets forms a profile of the upper mounting base for sights like "Picatinny", "Weaver", and the lower surface contour when tightening the screws forms the profile of the installation base of the "dovetail" type, which is used to install the adapter bracket weapons, characterized in that in the case of each bracket in the middle part between the lower mounting base and the upper mounting base are mutually perpendicular threaded holes in the horizontal and vertical planes perpendicular to the longitudinal axis of the bracket, into which the mounting (thrust) screws are screwed, and the vertical screws have the flat ends and abut against the upper surface of the lower mounting base, and the horizontal screws, also having flat ends, abut against the inner vertical surface the opposite bracket, while they are distributed along the entire length of the bracket and keep the width of the gap between the brackets and the mounting base of the weapon constant when tightening the tightening screws, and thereby block the linear and angular movement (voltage) of the brackets relative to each other.

Images