CZ9902778A3 - Gas-operated firearm with light body - Google Patents

Abstract

A compressed gas operated firearm consists of a body (1), mainly (10), breech (13), compressed gas containers (25) and trigger and valve devices (22, 23). Body (1) is made of a lightweight material made of a constant cross section with two superimposed, in the direction of shooting running bores (2, 3) of constant diameter, being the diameter of the upper bore (2) is smaller than the diameter of the lower bore (3). The upper bore (2) accommodates the barrel (10) and the conclusion (13) and the bottom bore (3) a pressurized gas container (25) and a trigger gas a valve device (22, 23). Trigger and Valve Devices (22, 23) are housed in a plug-in block (17) of circular cross-section, which can be inserted into the larger bore (3) of the body (I) from behind

Description

Technical field

The invention relates to a compressed gas firearm consisting of a body, a barrel, a breech, a compressed gas container and an actuating and valve device. For such weapons, which are also used in competitions, accuracy depends to a large extent.

BACKGROUND OF THE INVENTION

In known firearms, the body is a complicated component that is worked out of a block in many time-consuming processing steps. Other functional parts are then mounted on this, making assembly and repair work very labor intensive. Despite the design required for high gas pressure and high accuracy, it is necessary to strive for a favorable position of the center of gravity of the weapon and for a small body weight.

SUMMARY OF THE INVENTION i

It is therefore an object of the present invention to provide such a weapon of such a kind that, with simple machining and assembly and hence low production costs, it is suitable for high pressure and high accuracy at low weight.

Therefore, according to the invention, the body consists of a lightweight material of constant cross-section with two firing holes of constant diameter arranged one above the other in the firing direction, the diameter of the upper bore being smaller than the diameter of the lower bore and the upper bore containing the barrel and breech; tract.

• φ φ φ · · · • • • • • • •

By virtue of a constant cross-section, the unmachined body can be cut from a cross-sectional bar which has been produced by extrusion or extrusion. The cross-section is selected in such a way that maximum stiffness is achieved at minimum weight and only minimal machining is required, since the outer contours and the two continuous bores are dimensionally stable and have a good surface quality.

When using a cylindrical or sliding bolt, it is practical to expose the upper bore around the end of the barrel close to the bolt (claim 2) so that the space between the barrel end and the open bolt is accessible. All you need to do is mill the body at the top.

In a preferred embodiment, the cross-section of the upper bore is formed by two circular arcs of different radius, the circular arc of the smaller radius extending somewhat from the larger (claim 3). Thus, at the transitions between the two circular arcs, two bearings are formed for the rear end of the barrel, which is pressed into the housing by a screw on these bearings.

Furthermore, it is within the scope of the invention to uncover the upper bore in a portion of the barrel length (claim 4). This can be done in one operation together with uncovering the barrel near the end. This saves weight and also partially exposes the barrel.

and

In a further development of the invention, the actuating and valve devices are housed in an insertion block of circular cross-section which can be inserted from the rear into a larger bore of the housing (claim 5). Thus, the actuation and valve assembly can be pre-assembled in the insertion block and then inserted into the body as a complete assembly. In the case of circular cross-sections, precise fitings are particularly easy to make, so that the insertion block can be precisely positioned in the longitudinal direction if the insertion block has a protrusion with a forward facing fitting surface which, when assembled, rests against the housing surface (claim 6).

In a further development of the idea of the invention, the insertion block at the front end is provided with a thread to which the thread of the compressed gas container can be screwed (claim 7). The compressed gas container can be inserted from the front into a larger bore.

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If the body has a lateral longitudinal notch in the region of the insertion block that substantially touches the lower bore (claim 8), a lever for shifting the slide and cocking the trigger can be easily installed. Further, grip fastening means (claim 9) may be provided on the insertion block.

According to a further development of the idea of the invention, the body cross section at the top has a first sight guide (claim 10) and a second guide for handguard fastening means (claim 11).

DETAILED DESCRIPTION OF THE INVENTION

In the following, the invention will be described and explained by means of figures. They show:

Giant. 1 is a cross-sectional view of the profile according to the invention, enlarged; FIG. 2 is a longitudinal cross-section of the weapon according to the invention; FIG. 3 is a cross-section along IH-III in FIG.

and

Figure 1 shows the extruded or extruded profile produced as the starting product of body 1. It has a smaller bore 2 above and a larger circular bore 3 below. 5 lies lower. Depending on the different diameters 2, 3, the side wall 5 of the profile is inclined in the upper part inwards, in the lower approximately vertical. These walls are joined with corresponding roundings by an upper contour 7 with a guide for the sights and a lower contour 8 with a T-groove, on which the foregrip, other sights and the like can be attached as desired. (not shown).

φ φ • · · - - - - - - - - V V V V V V V V »» »» »» »» φ φ φ

Figures 2,3 show the finished body t, with the portion cut out in the front part. In the smaller bore 2, the barrel 10 (shortened at the front) is fixed in the body I by the rear end of the barrel Π ,. The end of the barrel H abuts the transition between the book arches 2 and 4 at the bottom and is pressed at the top by the fastening screws 12. In this way a three-point support is obtained in cross-sectional view. Behind the main 10 is a slide 13, in this case shown in the closed position. The body i is in the region of breech 13 from the top of the top, so that the reveal 14, kletým is the rear end of the barrel Π. accessible for charging. In the same way, a further off-hook 15 is carried out more forward.

A plug-in block 17 having a substantially circular cross-section is inserted from the rear into the large bore 3. It has a protrusion 18 forming a mating surface 19 which abuts against the counter face 20. The counter face 20 is formed by milling the profile part in the rear. These surfaces 19, 20 define the position of the insertion block 17. The screws 21 are fixed in the housing 1 (FIG. 3). The plug-in block comprises an actuating device 22, a valve 23, and terminates at the front with a thread 24 onto which the thread of the compressed gas container 25 that can be inserted from the front is screwed. Finally, at the rear of the insertion block 17 there is still a part 26 for fastening a handle (not shown).

Between the two bores 2,3 is cut from one side a notch 30 (Figure 4), which somewhat touches the larger bore 3. It serves to accommodate a tension lever 31, which can cooperate with the breech 13 by the vertical notch 32.

It can be seen that the body 1 of the profile of Figure 1 can be produced by a relatively small number of operations. In addition to the openings 153, 15 in the upper part, only the rear contour in the longitudinal direction up to the counterpart 20 must be milled at the rear and the two notches for the 3T tensioning lever. It consists of virtually all functional parts and can be pre-assembled into the body i. This creates a lightweight, inexpensive yet very precise construction, which also has an aesthetic shape.

Claims (11)

1. A firearm operated by a compressed gas, consisting of a body, barrel, breech, a container of compressed gas and an actuating and valve device, characterized in that: a) the body (1) is made of lightweight material of constant cross section with two constant diameter bores (2,3) arranged one above the other in the firing direction, the diameter of the upper bore (2) being smaller than the diameter of the lower bore (3), (b) the upper bore (2) accommodates the barrel (10) and the slide (13); and c) the lower bore (3) accommodates the compressed gas container (25) and the trigger and valve assembly (22, 23). Firearm according to claim 1, characterized in that the upper bore (2) has an uncovering (14) close to the breech, in the region of the barrel end (11). Firearm according to claim 1, characterized in that the cross-section of the upper bore (2) is formed by two circular arcs of different radius, wherein the circular arc (4) with a smaller radius projects somewhat from the larger. Firearm according to claim 2, characterized in that the upper bore (2) has a further exposed portion (15) in the barrel portion. Firearm according to claim 1, characterized in that the triggering and valve device (22, 23) is mounted in an insertion block (17) of circular cross-section which can be inserted from the rear into a larger bore (3) of the body (1). Firearm according to claim 5, characterized in that the insertion block (17) has a protrusion (18) with a forward facing surface (19) which, in the assembled state, abuts against the counter surface (20) of the body (1). 900 009 900 008 00 00 000 99 00 -67. Firearm according to claim 5, characterized in that the insertion block (17) has at its front end a thread (24) to which the thread of the pressurized gas container (25) can be screwed. Firearm according to claim 5, characterized in that the body (1) has, in the region of the insertion block (17), a lateral longitudinal notch (30) which substantially contacts the lower bore (3). Firearm according to claim 1, characterized in that the insertion block (17) is provided with gripping means (26). Firearm according to claim 1, characterized in that the body cross section has a first sight guide (7) at the top. 11. Firearm according to claim 1, characterized in that the cross section of the body has a second guide (8) for fastening means of the forend. 12. The firearm of claim 1, wherein the body is made of a light metal extruded profile.