RU2605465C1 - Gun drop-down barrel unit locking assembly - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to weapons, namely, to the gun drop-down barrel unit locking assemblies. Locking assembly contains a key, a locking frame. Locking frame consists of side posts and a bottom bonding tab. Rear frame can move in opposite guide slots made in the side walls of the breech frame and through a lower shaped cutout made in the lower part of the breech frame. On the rear barrel coupling there are side - the left and the right ones - and at least one lower ledges-"tusks". Locking frame is designed for interaction at locking with both support surfaces of the guide slots and the lower shaped cutout of the breech frame, and the locked surfaces of the side and at least one lower ledges-"tusks" of the rear barrel coupling and is kinematically connected with the key.

EFFECT: provided is uniform locking and technically long service life.

3 cl, 12 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to units for locking a reclining barrel unit in samples of firearms having a fixed bolt and a barrel block containing one or more barrels, swinging relative to the bolt on a transverse hinge (hinges).

BACKGROUND

The vast majority of samples of hunting smooth-bore firearms refers to systems that have a receiver that is essentially a fixed bolt and a movable barrel unit that reclines on a transverse hinge (s). In these systems, multidirectional forces act on the receiver and bolt during firing, which leads, over time, to the inevitable loosening of the hinge, which serves as an element for fixing the receiver inside the receiver and, accordingly, is an element of locking, and the appearance of an unacceptable gap between the shield of the receiver (mirror shutter) and an official cut of the barrel unit.

From the prior art systems are known that partially or completely eliminate the load on the transverse hinge and at the same time lock the barrel unit from opening. Nevertheless, of the main disadvantages inherent in such systems, it is necessary to point out the following:

No. 1. The presence on the breech section of the barrel block of protruding parts, creating significant inconvenience when charging.

Examples: Griner shutter and its improved version - Kersten shutter (DRP patent No. 141334 from 1902), Jaeger shutter (DRP No. 209.113 from 1906), etc.

No. 2. When locking onto lateral radial surfaces, unloading is carried out not on planes, but due to the interaction of contact points lying on a tangent with respect to the plane of the shutter mirror, i.e. locking plane, which leads to a potential slip relative to each other of the specified contact points.

Example: Adolf, Kaprinus locks and Beretta lock with pin locking.

Number 3. The functions of locking the barrel unit in the receiver of the gun and the functions of unloading the hinge of the suspension of the barrel unit are assigned to several independent locking units, which complicates the design and makes the repair economically impractical.

Number 4. The presence between the interacting planes of the nodes of unloading and locking of the so-called "running" gaps necessary for moving these planes relative to each other during the rotation of the barrel unit, the presence of which leads to a significant decrease in the density of locking and serves as a prerequisite for the beginning of subsequent loosening.

No. 5. The suspension unit (hinge unit) with its center of rotation is included in the positioning system of the breech section of the barrel unit along the X and Y axes relative to the shutter mirror, which does not allow the suspension unit to be excluded from the opening locking mechanism.

Example: Jaeger shutter, “Ideal” shutter.

No. 6. Structural weakening of the most loaded part of the shutter (mirror) with various holes or cutouts to ensure the interaction of the locking elements of the shutter.

Example: Greener, Kersten, and Beretta bolt locks with pin lock.

Number 7. Different degrees of unloading of the articulated joint in vertically double-barreled or multi-barrel systems due to the different geometric arrangement of the trunks relative to the central axis of the barrel unit and the contact pads of the unloading units.

Example: Beretta lock with pin locking, Kersten lock, etc.

Of the locking systems related to the invention, it is necessary to mention:

- Beretta patent of 1955 (locking and unloading with the help of lateral support protrusions - “fangs” and their pins). The specified technical solution is characterized by the above disadvantages No. 2, 3, 4, 6 and 7;

- patent of the company "Manufactory de France" from 1889 (Shotgun "Ideal". Locking on a vertical wedge bolt). The specified technical solution is characterized by the above disadvantages No. 1, 5, 6 and 7;

- F. Beasley’s patent BP No. 22512 of 1913 (locking with one rear vertical pillar). The specified technical solution is characterized by the above disadvantages No. 1, 3, 5 and 7;

- patent of the company “BLASER FINANCE HOLDING GMB” (DE) RU 2401965 (locking with a vertical sliding shutter of Eger). The specified technical solution is characterized by the above disadvantages No. 1, 4 and 5.

SUMMARY OF THE INVENTION

The objective of the invention, taking into account the disadvantages known from previous structural solutions for locking from the disclosure of the receiver and the simultaneous unloading of the hinge of the suspension of the receiver, is to provide the following:

1. The exception to the design of the protruding parts on the breech section of the barrel unit.

2. Locking not on contact points, but on contact pads (contact "spots").

3. The use of a single one-piece locking unit and giving this node universality by simultaneously combining in this node both the function of locking the barrel unit from opening and the function of unloading the articulated suspension of the barrel unit.

4. Elimination at the final stage of locking the "running" gaps between the interacting locking and locking planes.

5. Ensuring self-sufficiency in terms of fixing the breech slice of the barrel unit along the X and Y axes relative to the shutter mirror without taking into account the center of rotation in the hinge suspension unit of the barrel unit.

6. Ensuring the integrity of the receiver mirror.

7. Ensuring the stability of the unloading of the articulated joint, regardless of the location of the firing barrel relative to the central axis of the barrel unit and the unloading units in vertically double-barrel or multi-barrel systems.

According to the invention, the locking unit of the reclining firearm barrel mounted on the hinge / hinges of the receiver’s suspension, contains a key, a locking frame, structurally consisting of side racks and a lower jumper, arranged to move in opposite guide grooves made in the side walls of the receiver, and through the lower curly cutout made in the lower part of the receiver. On the rear barrel clutch of the barrel unit, lateral (left and right) and lower (left and right) or one lower “fangs” protrusions are formed. The locking frame is designed to interact when locking both with the supporting surfaces of the guide grooves and the lower figured cut-out of the receiver, and with the lockable surfaces of the side and lower (lower) protrusions - “fangs” of the rear receiver of the barrel unit. The locking frame is kinematically connected to the key.

In the first embodiment of the locking unit, the guide grooves for the locking frame are made at an angle relative to the vertical axis of the weapon with the upper part of the grooves tilted towards the receiver side mirror, while all locking surface of the frame and the locked surface of the side and lower (lower) protrusions of the “back” fangs the barrel clutch of the barrel unit are located at the same angle of inclination relative to the vertical axis with the inclination of the upper part of these surfaces also towards the mirror of the receiver, and the angle Pull grooves is greater than the angle of inclination of the locking and lockable surfaces (Fig. 1). In the second embodiment of the locking assembly, the guide grooves for the locking frame are vertical, while the locking surfaces of the frame and the locking surfaces of the lateral and lower (lower) protrusions “fangs” are either vertical or are located at the same angle of inclination relative to the vertical axis with an inclination the upper part of these surfaces toward the muzzle end (Fig. 2).

The result of the application of the invention is the fulfillment of the tasks set for the invention — locking the barrel unit from opening in the receiver with one piece (locking frame) and simultaneously unloading the hinged suspension of the barrel unit, since the breech section of the barrel block is fixed relative to the receiver mirror along the horizontal axis X guns, and along the vertical axis Y of the gun due to the presence of an angle (f1), while the so-called "running" gaps are eliminated and is ensured by The difference in angles (f2) and (f3) is the required locking density due to grinding of the mating surfaces, as well as the uniformity of unloading of the articulated suspension of the barrel unit in vertically double-barreled or multi-barrel systems due to the distribution of locking forces across four (three) locking planes symmetrically relative to the central axis barrel unit and, accordingly, eliminating the dependence of the unloading of the articulated suspension on the geometric location of the firing barrel in the receiver unit.

LIST OF DRAWINGS FIGURES

FIG. 1 - Elements that make up the locking mechanism of the gun, side view.

FIG. 2 - Elements that make up the locking mechanism of the gun, side view.

FIG. 3 - Elements that make up the locking mechanism of the gun and located on the rear barrel clutch, front and side views.

FIG. 4 - Part of the shotgun with an open barrel unit, side view.

FIG. 5 - Part of the shotgun with an open barrel unit and an open locking system, top view.

FIG. 6 - Part of a shotgun with an open barrel unit and an open locking system in partial sections from FIG. 5 and local views, side view.

FIG. 7 - Part of a shotgun with a closed receiver, side view.

FIG. 8 - Part of the shotgun with a closed receiver and an open locking system in partial section, top view.

FIG. 9 - Part of a shotgun with a closed receiver and an open locking system in partial sections from FIG. 8 and local views, side view.

FIG. 10 - Part of the gun with folding trunks with a closed receiver unit, side view.

FIG. 11 - Part of a shotgun with a closed barrel unit and a closed locking system in partial section, side view.

FIG. 12 - Part of the folding gun with a closed barrel unit and a closed locking system in partial sections from FIG. 11 and local views, side view.

DETAILED DESCRIPTION OF THE INVENTION

A sample of a smooth-bore hunting firearm (shotgun) with two vertically arranged trunks according to the invention comprises a rear barrel clutch (1) of the barrel unit with lateral - left and right (1a, 1b) and lower (1c, 1d) protrusions - “fangs”, located on hinges (or hinge) of the suspension (2) inside the receiver (3), which has two opposite grooves in the side walls (cheeks), united by a common curved notch in the lower part of the receiver (3), as well as the upper rear shaped slot-nests, executed at the top hour the length of the cheeks of the receiver (3) in accordance with the shape of the rear and lower parts of the side protrusions “fangs” (1a, 1b) of the rear receiver sleeve (1) of the receiver unit, the guide grooves being inclined at an angle (f1) to the side of the receiver mirror relative to the vertical axis Y of the gun.

Inside the receiver (3) there is a locking frame (4), structurally consisting of side racks and a lower jumper, inserted into the opposing grooves of the cheeks of the receiver, which can be moved in these grooves and, with its lower jumper, enters a curved notch in the lower part of the receiver ( 3). The frame (4) in its upper parts, as well as on the lower jumper, has rear locking surfaces “D1”, “D2”, “D3” and “D4” that face the receiver mirror (3) and have an angle (f2) along relative to the vertical axis Y of the gun and, accordingly, to the plane of the forehead (mirror) of the receiver (3), while (f2) <(f1). The front lockable surfaces of the lateral and lower projections of the “fangs” of the rear clutch of the barrel block “C1”, “C2”, “C3” and “C4” have an angle (f3), while (f3) = (f2), which allows for the effect grinding between locking and locking surfaces in the closed state of the gun.

The movement of the frame (4) can be controlled using the generally accepted V. Richards upper key (5) through various intermediate elements, for example, a slider with longitudinal rods (6), rocker arms (7) interacting with the frame (4), or in other ways. The execution of this locking unit is possible in two variants of the arrangement of the locking frame - inclined (Fig. 1) and vertical (Fig. 2). In the vertical arrangement of the locking frame, the locking surfaces of the frame and the lockable planes of the “fangs” have an angle (f4) with respect to the Y axis, functionally similar to the angle (f3) = (f2), in order to provide a grinding effect.

In FIG. 1, FIG. 2, FIG. Figure 3 shows the elements of the locking unit, which in a particular case uses the frame drive (4), the key of V. Richards (hereinafter the key) (5), which controls the movement of the slider with longitudinal rods (6), and two (left and right) rockers (7 )

In FIG. 4, FIG. 5 and FIG. 6, the key (5) is allotted as far as possible to the right to the angle A. The slider (6) is retracted to the rear position and interacts with the frame (4) through the rocker arms (7). In the open state, the frame (4) is pushed down in the receiver (3) and lowered, and the barrel unit is folded up on the hinges of the suspension (2) by an official slice of the rear barrel clutch (1) up.

In FIG. 7, FIG. 8 and FIG. 9, when the shotgun is closed, the barrel unit and, accordingly, the rear barrel clutch (1) are turned to the standard closed position. The key (5) is set as far as possible to the right to the angle A. In the unlocked position, the frame (4) is still lowered down, respectively, between the front plane of the left and right, as well as the lower “fangs” and the front planes of the side through grooves, as well as the front plane of the lower curly the cutout of the receiver (3) formed gaps equal to the size of the side projection of the locking frame.

In FIG. 10, FIG. 11 and FIG. 12, the key (1) is turned to the left, in the locking position, providing, through the intermediate elements (6) and (7), the frame (4) moves upward to the locking position.

For clarity, we consider the work of only the left side of the frame (4). The work of the right side of the frame (4), containing the locking plane "D2" and "D4" and interacting with the right side of the rear barrel sleeve (1), containing the right side "canine" (16) with the lockable plane "C2" and the lower right "canine "(1g) with a lockable plane" C4 ", is similar.

When moving the frame (4) up the lateral through grooves of the receiver (3), the left pillar of the frame (4) enters the corresponding gap between the lateral “fang” protrusion (1a) of the rear barrel coupling (1) and the front surface of the left side groove of the receiver (3), and the lower jumper of the frame enters the gap between the front plane of the lower figured cut-out of the receiver (3) and the lower protrusion “fang” (1c) of the rear barrel clutch (1). At the final stage of the movement of the frame (4) to its highest position, the "running" gaps are eliminated and the effect of grinding in the mating surfaces is ensured, i.e. tight contact between the supporting surface “A1” of the left pillar of the frame (4) and the supporting surface “B1” of the upper front of the left side groove of the receiver (3) and, respectively, between the locking surface “D1” of the frame (4) with the lockable surface “C1” of the side the protrusion of the “canine” (1a) of the rear barrel sleeve (1), as well as between the supporting surface “A3” of the lower bridge of the frame (4) and the supporting surface “B3” of the front of the figured cutout in the lower part of the receiver (3) and, respectively, between locking surface “D3” of the lower frame jumper (4) from the locking surface "C3" lower left vystupa- "canine" (1c) of the rear receiver sleeve (1) the barrel unit.

Claims (3)

1. The locking unit of the reclining barrel of a firearm mounted on a hinged suspension in the receiver, containing a key, a locking frame, structurally consisting of side racks and a lower jumper, located with the possibility of movement in opposite guide grooves made in the side walls of the receiver, and through the lower figured cutout made in the lower part of the receiver, the rear receiver sleeve, on which the side - left and right and at least one lower protrusions are formed - “fangs”, while the locking frame is designed to interact when locking as with the supporting surfaces of the guide grooves and the lower curly cutout of the receiver, and with lockable surfaces of the side and at least one lower protrusions of the “fangs” of the rear barrel coupling and kinematically connected with a key. 2. The locking unit according to claim 1, characterized in that the guide grooves and the lower figured cutout for the locking frame are made at an angle relative to the vertical axis of the weapon with an inclination towards the receiver’s mirror, with the upper and at least one lower locking surface frames and lockable surfaces of the side and at least one lower protrusions of the “canines” of the rear barrel clutch of the barrel unit are located at the same angle of inclination relative to the vertical axis of the weapon, with the inclination of the upper part indicated on top nostrils also toward the mirror of the receiver, and the angle of inclination of the grooves is greater than the angle of inclination of the locking and lockable surfaces. 3. The locking unit according to claim 1, characterized in that the guide grooves and the lower figured cutout for the locking frame are made vertically, while the upper and at least one lower locking surface of the frame and the locking surface of the side and at least one lower protrusions “fangs” are either vertical or located at the same angle of inclination relative to the vertical axis with the inclination of the upper part of these surfaces towards the muzzle end.

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