EP2012083A1 - Projectile for handgun ammunition - Google Patents

Abstract

The projectile has a metallic core (20) partially surrounded by a plastic cladding (10). The metallic core forms a projectile base (22) and has a cylinder section (21) close to the base with a field-near diameter, and an inner cylinder section (26) with small diameter. The plastic cladding has the inner cylinder section, where whole diameter results for a cylinder section (14) connected to the base near the cylinder section, and corresponds to a nominal diameter of a projectile casing of a rifling caliber of a corresponding tube of a handgun.

Description

The invention relates to a bullet for handgun ammunition with a metallic soul, which is at least partially surrounded by a plastic sheath.

State of the art

From the DE 15 78 209 Rheinmetall GmbH is a decay projectile for practice cartridges for handgun or machine guns with a completely enveloping this plastic bullet jacket and a bullet filling consisting of heavy duty powder, wherein a reinforced plastic bottom cap is provided in the bottom region of the bullet jacket.

From the DE 102 09 035 a metal bullet with a plastic jacket is known. The metal core has an annular groove into which the injected plastic material penetrates during manufacture and has a stabilizing effect. The metal core tip of the projectile is not encased and allows a Aufpilzung the projectile when hitting a target.

From the EP 1 209 437 a sabot projectile is known, in which the sub-caliber Zerschellpenetrator comprises a plastic sheath and a metal core, wherein the plastic sheath is open to the projectile nose and the metal core protrudes beyond the sheath.

From the EP 0 907 680 High density composites are known, especially for use in ammunition, consisting of a metal powder and a binder, in particular a polymer binder, wherein the metal powder articles have a size distribution between 2 and 40 microns and the metal is tungsten.

The known projectiles have in common that they have a cheap, pipe-protecting polymer-plastic jacket and a metal core to increase the bullet weight, in particular to obtain the repeating function even with training ammunition and for the preservation of the breakdown effect, unless it is training ammunition.

Summary of the invention

Based on this prior art, the present invention seeks to provide a bullet, which shows no or less mushrooming during impact and also easily fragmented to avoid ricochets when hitting hard targets.

This object is achieved according to the invention for a projectile of the type mentioned above in that the metallic core forms the floor of the projectile and has a bottom-near cylindrical section with a field-near diameter and an adjacent thereto in the direction bullet tip inner cylinder section with a smaller diameter, that the plastic shell comprises only the inner cylinder section, wherein for the adjoining the cylinder portion near the bottom portion of the cylinder results in an overall diameter which corresponds at least to the nominal diameter of the projectile casing of the Zugkalibers a corresponding tube of a handgun.

The provision of a plastic sheath, which is closed to the projectile tip, avoids detachment of the shell from the metal core in the tube of the handgun. There are fewer deposits in the pipe. By providing the shoulder results in a good gas tightness. The Fragmentierungsnuten, in particular the bottom-side transition groove ensure upon impact a hard surface, from which a ricochet behavior of the projectile is to be expected, a fragmentation of the projectile. At the same time these grooves allow a better connection of the molded plastic jacket with the soul, which can be achieved alternatively by a prior filling of the grooves with an adhesive. The plastic sheath can be sprayed onto the soul or previously created, in particular molded plastic shells can be pressed onto the metallic core, wherein the abutment shoulder provides a stop.

The metallic core of steel, copper, tin, tungsten or alloys of these metals allows the production of a sufficiently heavy lead-free projectile.

Brief description of the drawings

Fig. 1

eine perspektivische Ansicht eines Geschosses gemäss einem Ausführungsbeispiel der Erfindung,

Fig. 2

eine Unteransicht des Geschosses nach Fig. 1, und

Fig. 3

eine teilweise Querschnittsansicht und Seitenansicht entlang der Linie III-III der Fig. 2.

The invention will be described in more detail below with reference to an embodiment of the invention in conjunction with the accompanying drawings. These show:

Fig. 1

a perspective view of a projectile according to an embodiment of the invention,

Fig. 2

a bottom view of the projectile Fig. 1 , and

Fig. 3

a partial cross-sectional view and side view along the line III-III of Fig. 2 ,

Detailed description of an embodiment

The Fig. 1 shows a perspective view of a projectile 1 according to an embodiment of the invention. The projectile 1 can be designed in its dimensions for various handgun ammunition, especially for a variety of calibers for pistols and rifles.

The projectile 1 is in two parts, consisting of two different ones Materials exist.

The plastic jacket is provided with the reference numeral 10. It may be thermoplastic material, including in particular higher melting and harder material, for example polyoxymethylene, polyamide, polycarbonates, acrylic resins, polyacrylates, polyether ketones, polyaryl sulfones, polybenzimidazoles, polybutylene terephthalates, polyetherimides, polyethersulfones, polyimides, polyphenylene sulfides, polyethylene, polypropylene , Polysulfones, polyvinyl chlorides, polystyrene, polyphenylene. It can also be a nylon material. Advantageously, it is a sprayable material.

The metallic core is provided with the reference numeral 20. The metallic core 20 may be a cast or rotated metal part, or it may be a sintered core. It can be made of steel, copper, tin or tungsten or of alloys of these metals.

The metallic core 20 has a bottom 22, which is just configured here. This is followed by a near-bottom cylinder section 21. This has a diameter which is close to the field diameter. A diameter near the field diameter means, for example, for a 9 mm projectile for a short weapon 8.82 - 0.1 = 8.72 mm. For a 5.6 x 45 mm with a nominal bullet diameter of 5.68 mm, the diameter of the cylinder portion 21 may be 5.56 - 0.1 = 5.46 mm. The near-surface cylinder portion 21 may be chamfered at the transition to the ground. The length of the cylinder portion 21 may be 3 mm to an automated enclosure for automatic assembly of the projectile resp. To enable encapsulation.

Fig. 2 now shows a bottom view of the projectile Fig. 1 with one on the Fig. 3 referring line III-III. The Fig. 3 shows a partial cross-sectional view and side view along this line III-III of Fig. 2 ,

A radial abutment shoulder 25 adjoins the said bottom-near cylinder section 21, with which the diameter for the inner cylinder section 26 is reduced, for example, to 4 mm. The abutment shoulder 25 has a bottom-side transition groove 24, the depth of which may be between 0.3 mm and 1 mm, this value being chosen to be, for example, 0.4 or 0.5 mm depending on the energy of the projectile in the target.

To the inner cylinder portion 26 of the plastic shell 10 is molded. This has a with the exceptions to be described a substantially uniform thickness, which is for example 0.75 mm in the small caliber area. This allows a high utilization of the available volume over the projectile length of here 21 mm for the metallic core 20. Advantageously, the volume utilization of the core 20 is at least 80% of the total volume of the projectile.

The metallic core 20 has here two further fragmentation grooves 23, which are located at a distance of about 5 mm from each other. In the drawing of the Fig. 2 For example, the fragmentation grooves 23 and the bottom-side transition groove 24 are filled with an adhesive. They can also be filled by the plastic material when spraying the plastic sheath 10.

The grooves 23 and 24 are shown as keyways. It can also be rectangular or rounded grooves. They may have been lifted off by machining or produced by being pressed in, in order to prepare the predetermined breaking points by introducing tension.

The plastic jacket 10 has a conical tip 11, for example, with a cone angle of 75 degrees, which then in a width which corresponds approximately to the diameter of the metallic core 10 into a steeper cone portion 12 at an angle of, for example, 30 degrees. The diameter of the front, first cylinder section 13 in the case of the small caliber projectile shown here is 5.5 mm with a tolerance towards a smaller diameter of less than 0.5 percent. This results in this cylinder section 13, an overall diameter of soul 20 and plastic sheath 10, which is in the range of the diameter of the field caliber of a corresponding tube of a handgun. Effectively, said diameter must be slightly smaller than the field diameter of the barrel of the corresponding caliber. This can be introduced without effort into the chamber, wherein the cylinder portion 13 in the running section behind the transition cone (already has the train / field profile) comes to rest. The whole serves to maximize the volume resp. the bullet mass.

In approximately the middle of the projectile 1, here seen 11 mm from the bottom 22, the first cylinder section 13 ends and passes over the step 15 in the enlarged diameter second cylinder section 16 on. The aim is a maximum guide length and sufficient bullet extraction force, limited by the total length of the cartridge, resulting from the need for compatibility with the magazine. The diameter of the second cylinder portion 16 is shown in the small caliber bullet 5.75 mm with a tolerance towards a smaller diameter of less than 0.4 percent. This ensures that this diameter corresponds at least to the nominal diameter of the Zugkalibers a corresponding tube of a handgun.

The sleeve for the projectile 1 can be pressed in a known manner on the bottom-near cylinder portion 21 or optionally mounted with adhesives or provided with an encapsulation of the metallic core 20 with thermoplastics.

The plastic sheath 10 may be sprayed onto the metallic core 20 or a separately produced plastic sheath 10 may be pressed onto the metallic core 20. In this case, then the tip 11 of the shell 10 may be provided axially or the cone portion 12 radially or obliquely with a channel for the escape of compressed in the interior of the shell 10 air.

With appropriate Massanpassungen this bullet 1 can be used for ammunition for a variety of small arms.

LIST OF REFERENCE NUMBERS

1

bullet

10

Plastic sheath

11

apex

12

cone section

13

first cylinder section

14

second cylinder section

15

Stage between the cylinder sections

16

flush cone transition

20

metallic soul

21

near-bottom cylinder section

22

basement floor

23

Fragmentierungsnuten

24

bottom transitional groove

25

adjoining shoulder

26

Inner cylinder section

Claims (7)

Bullet (1) for small arms ammunition with a metallic core (20) which is at least partially surrounded by a plastic sheath (10), characterized in that the metallic core (20) forms the floor (22) and a bottom-near cylindrical portion (21) a near-field diameter and an adjacent thereto in the direction of the projectile nose inner cylinder portion (26) having a smaller diameter, that the plastic shell (10) only the inner cylinder portion (26), wherein for the cylinder near the bottom portion (21) adjoining the cylinder portion (14) Total diameter results, which corresponds at least to the nominal diameter of the projectile casing of the Zugkalibers a corresponding tube of a handgun. Projectile (1) according to Claim 1, characterized in that the cylinder section (14) adjoining the bottom-near cylinder section (21) extends approximately into the center of the projectile and is followed in the direction of the projectile nose by a further cylinder section (13) Cylinder section (13) results in an overall diameter of soul (20) and plastic sheath (10), which is in the range of the nominal diameter of the field caliber of a corresponding tube of a handgun, in particular slightly lower. Projectile (1) according to claim 1 or 2, characterized in that at the transition between the cylinder portion (21) with a field near diameter and the inner cylinder portion (26) with a smaller diameter, a radial abutment shoulder (25) is provided, which advantageously at the same time in the inner cylinder section (26) formed transition groove (24). Projectile (1) according to one of claims 1 to 3, characterized in that on the inner cylinder portion (26) at least two Fragmentierungsnuten (23, 24) are provided. Projectile (1) according to claim 4, characterized in that the plastic jacket (10) is injection molded and fills the Fragmentierungsnuten (23, 24). Projectile (1) according to claim 4, characterized in that the Fragmentierungsnuten (23, 24) are filled with an adhesive which on the subsequently sprayed on the soul (20) plastic sheath (10) or on the previously created, in particular sprayed, and then adheres to the metallic core (20) to the stop shoulder (25) pressed-plastic jacket (10). Projectile (1) according to one of Claims 1 to 6, characterized in that the metallic core (20) consists of steel, copper, tin, tungsten or of alloys of these metals and / or is sintered.

Images