CN1110485A - Two-part cartridge wad with pneumatic damping - Google Patents

Abstract

Two-part cartridge wad with pneumatic damping intended to the cartridge manufacturing industry, the wad being comprised of two interchangeable parts which are assembled and which correspond to a container (1) and to a damper-seal (8). The container (1) comprises a series of hinged wings (7), as well as a valve (2) for the regulation of the damping and the air injection. Both the container (1) and the damper (8) have side walls (3 and 9) of convexo-concave shape, which are intended to absorb radial deformations with respect to the symmetry axis of the wad. The damper (8) has a quadruple function: it withstands the flexion and deformation of the material, the friction against the walls and the compression of air contained.

Description

Two-part cartridge wad with pneumatic damping

The purpose of patent application of the present invention is the two-part bullet plug (wad) with air damping, compares with the bullet plug that cartridge is used usually, and it has many advantages and novel part.

Usually; with regard to the state of technology; it should be noted that; in cartridge; because the obstruction fully of the enhancing of shooting and the gas flow pattern that produces in the explosive inflammation process and gas can cause gun barrel to occur by the plumbous phenomenon that covers or covered by copper repeatedly; therefore, in order to protect unlikely these phenomenons that occurs of gun barrel, the bullet plug is with a single deformable material manufacturing usually.

Yet, use common bullet to be plugged with many inconvenient parts, promptly following these:

-when relatively by same cartridge and bullet plug, and same rifle do the difference shooting time, (pattern) is inconsistent for flow pattern.

-cause damping by the bending and the distortion of a constituent material, therefore produce expendable energy.

-distortion suddenly when running into the restriction of rifle.In the bullet meeting insert material.

The energy that consumes in-the deformation process and big to the friction of gun barrel.

-powder charge each time needs the bullet plug of specified size, that is, even for same powder charge, it is cun different that bullet quantity difference also needs to play clearance gauge, as when the different situation of cartridge length.

-bullet plug range is excessive, thereby causes ejaculator and third party's misjudgment.

The two-part bullet plug with air damping that becomes the object of the invention is interconnected by two, and element-housing that can exchange and damper gate are formed.

Housing comprises many flexible fins and damping adjusting and air injection valve.Housing and damper have many cancavo-convex cross section walls, and it can absorb the radial direction distortion with respect to bullet plug symmetry axis.

Damper has the effect of four aspects: it bears the crooked and distortion of material, to the friction of gun barrel and the compression of contained air.

Compare with traditional bullet plug, the major advantage of disclosed cartridge bullet plug is as follows:

-flow pattern strengthens.

-for once given powder charge action, need energy less.

-same bullet plug can be applicable to different cartridge length, and can put into different explosive payloads in same cartridge.

-different housing and dampers can exchange.

-can adopt gun barrel restriction (barrel throttle) and different apertures neatly for same bore.

-can be less friction realize that good gas stops up.

-dust-shot embedding bullet plug material is more shallow, makes bullet plug and powder charge be easy to separate.

-bullet plug range is less.

-recoil is more steady.

-damping system can recover energy.

For later explanation being replenished and understanding main feature of the present invention better, a picture group is enclosed in explanation, be not with any restriction as a kind of diagram, comprised more most representative details among the figure.

Fig. 1 represents the longitudinal section of the preferred embodiments of the present invention.

Fig. 2 represents two views (plane and longitudinal section) of housing.

Fig. 3 represents two views (plane and longitudinal section) of damper gate.

Fig. 4,5 and 6 expressions are similar to top Fig. 1, a series of figure of 2 and 3 according to another alternative embodiment of the present invention.

According to above-mentioned figure with according to employing figure notation mode, how the bullet plug of being made up of two independent component housings (1) and damper gate (8) constitutes as can be seen.In case assembling finishes, two elements just constitute a bullet plug.

Housing (1) has characteristics, because its expression profile is columniform, has many fins (7) to be connected with housing with its underpart, and many holes of sidewall (3) are used to place these fins (7) simultaneously.

When fin (7) when folding up, they can put into this hole, and then housing outer forms cylindrical completely.

Housing (1) has outside opening, the smooth inner wall face of truncated cone shape.Bottom or base (4) are the tapering shape convex shaped, and end is an annulus, and annulus is the base of housing; Also be the end of internal face simultaneously.

There is a cannelure lower end of housing on the part foremost at it, be used for being connected with damper gate (8), and its center surface is the tapering shape spill.Be placed with a valve (2) on the centre as the base of housing bottom (4) or wall, it is made of two obstructed holes, and the film (5) that these two Kong Yuyong and housing identical materials are made overlaps.The last hole of valve can be cylindrical or prismatic, and the hole can be truncated cone shape or the shape same with last hole down.As required, the size of film and thickness can change.

Shall also be noted that when needing that film can go up slide with being present under pressure, action is similar to the lid of film, or even with a throttle orifice replacement of regulating air.

Damper gate (8) profile is vase-shaped, and its chamber is determined by the wall (9) of bellows form or produced inflection place slightly rounded by sine curve.This wall (9) is bearing on the transversal wall (12), and the effect of wall (12) is as the baffle plate or the base of bellows, and this base has the convex bottom of being made up of two interconnected truncated cone shapes (11) and (13).

Same wall (12) has the concave bottom of being made up of two interconnected truncated cone shapes (11) and (13).

The top of damper (8) or edge (10) have the groove of a ring-type.Groove has a lips edge, can make watertightness better when supporting in the plane.In addition, also have the muscle of an annular, it cooperates with housing (1), can prevent from damper (8) easily they to be taken apart with after housing (1) is connected.

The present invention attempts to solve the inconvenient part of existing bullet plug all.For this purpose, selected the bullet plug of two-part, two elements are to make with the method for injection moulding or blowing, and they can be made by the non-rigid or semirigid material of plastics.

After two elements of bullet plug assemble, can pack the bullet plug in the cartridge into.

When the bullet plug is put into carton, the flank sheet will fold in its housing, and remain under this condition and launch from rifle until the bullet plug.The flank sheet will be as stabilizer and brake and is launched then.

When the bullet plug was placed in the housing and lean against on the explosive, damper will be by warpage, and the air in the cartridge will be compressed (this compression is by the decision of damper bellows length) simultaneously.On this position, the bullet plug is equipped with little range boosting explosive at an upper portion thereof, is ready to and can have shot.

When considering all above each points, when rifle is shot, because the warpage of damper wall (bellows) material adds that damper will be worked to the friction of housing or the generation of rifle wall.When the bellows of damper is folding fully, the convex cone of damper base will promote the concave cone that folding wall withstands shell wall side.Shell wall face body produces distortion, till the shape of it and two awls adapts to, then, the air that is included in the chamber (6) and compresses therein will reach essential pressure, to open valve (2), spray one compressed air, excite little range boosting explosive, reclaim the energy that a part is used for damping simultaneously, and be translated into shooting useful pulse.If this valve is designed to can open when the extra pressure that it is subjected to being come by the restriction of rifle, then it can utilize the little range boosting of the portion of energy deexcitation explosive that accumulates in the damping process, and then, when the internal compression resistance lowers, can make the restriction of bullet plug by rifle.

Because the transversal wall of housing and the closure wall mask of damper have the male-female shape, they can absorb the radial contraction for bullet plug symmetry axis, make the bullet plug that has little range boosting explosive become steady by restriction.

In addition, as required, the opening pressure by changing valve simply or the sectional area of pore.Valve (2) can snap action or gradual the action.In this case, make easily that air is almost instantaneous to flow or more gradual flowing, thereby reach last desirable damping action.

When the bullet plug shot out from rifle, fin was tending towards launching.Air with very high speed contact fin will help fin to launch.In case fin launches, they can not make the bullet plug stop, but can make its stability-of-path, make separating rapidly and steadily of bullet plug and little range explosive, and the running orbit by little range explosive boosting is seldom distorted.

When the bullet plug breaks away from the boosting explosive suddenly, owing to the braking action of air, it will drop near the ejaculator, and whether he has hit target to be not easy to make it to feel uncertain.

Claims (7)

1, a kind of two-part that is used for projectile weapon cartridge and similar device has the bullet plug of air damping, it is characterized in that, it is to be made of two interchangeable element-housings connected to one another (1) and damper gate (8), described two elements is with injection moulding or blow moiding method manufacturing, and makes with plastics or any other non-rigid or semirigid material.Described housing comprises many folding edge flap (7), when the bullet plug shot out from rifle, fin can launch, and can make the bullet plug stop and stablizing its track so rapidly, thereby make bullet plug and little range boosting explosive rapidly and separate reposefully, the while distortion of track is little.

2, the bullet plug that has air damping according to the two-part of claim 1, it is characterized by, housing (1) is a cylindrical shape, described fin (7) is outstanding from base, the bottom of fin is connected with the bullet plug, fin is placed in many and the groove that wall (3) overlaps with folded state, wall (3) is flat and outside open truncated cone shape, its bottom or base (4) are protruding truncated cone shape, terminal on an annulus, this annulus is exactly the base of described shell case, the ragged edge of housing lower surface partly has annular groove, can place damper gate (8) and be mated, and center surface is a recessed truncated cone shape that the core of base (4) has a valve (2), it is made up of two holes, with being connected with film (5) that the same material of housing is made, film can be used to promote the present hole of going up the lid that slides or regulating air output by pressure and replace if needed.

3, the bullet plug that has air damping according to the two-part of claim 1 or 2, it is characterized by, damper gate (8) is for the vase shape and have a chamber (6), chamber (6) is surrounded by wall (9), wall (9) is a corrugated tube shape, be fixed on the transversal wall (12), transversal wall (12) constitutes the baffle plate of wall (9) or base and by two truncated cone shape spares (11) and (13) formation, the top of damper (8) has a cannelure, this cannelure has the edge with two lips, make and to guarantee necessary watertightness when being placed on the plane at the lip edge, in addition, described top has an annular recess to be placed in the housing (1), prevents that damper (8) from separating with housing (1), damper (8) can bear the folding and crooked of material, and in the shooting course to the friction of wall and the compression of contained air.

4, according to two-part any in the claim 1 to 3 have air damping the bullet plug, it is characterized by, because the bullet plug is placed in the housing and heads on little range boosting explosive, therefore has the ability to anticipate, it is folding that this can make damper (8) produce, the air compression that its inside is comprised, when this position, the bullet plug is equipped with little range boosting explosive at an upper portion thereof, and cartridge is ready to and can shoots.

5, the bullet plug that has air damping according to two-part any in the claim 1 to 4, it is characterized by, after the shooting, damper (8) is to move by the song change of its wall (9) material and to the friction of housing (1) or rifle wall (3), like this, when the bellows of this wall is folded fully, the convex cone of damper base will promote the concave cone that folding wall heads on housing wall, make these wall distortion, till they adapt to the shape of two awls.

6, the bullet plug that has air damping according to two-part any in the claim 1 to 5, it is characterized by, can predict, be included in the inner compressed air in chamber (6) and reach enough pressure, valve (2) is opened, discharge the little range boosting of one compressed air deexcitation explosive, thereby reclaim the energy that a part is used for damping, it is converted into shooting useful pulse, and no matter whether this valve (2) originally was designed to can open when being subjected to doing the time spent from the extra pressure of gun trigger, can make the bullet plug by gun trigger like this, reduce its internal compression resistance, the size of described valve can change.

7, the bullet plug that has air damping according to two-part any in the claim 1 to 6, it is characterized by, the transversal wall of housing and the transversal wall of damper baffle plate have suitable male-female shape, can absorb radial deformation, make and perfectly to be shot and to make the bullet plug restriction by rifle reposefully different bore diameter for bullet plug symmetry axis.

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