JP2010078294A - Slug bullet nose holding member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slug bullet nose holding member capable of improving hitting accuracy of a slug bullet. <P>SOLUTION: The slug bullet nose holding member includes a disc part 11, a bullet nose holding part 15 formed protruding on one face of the disc part 11, and a recessed part 14 bestriding the disc part 11 and the bullet nose holding part 15. A ratio L<SB>2</SB>/L<SB>1</SB>of a thickness L<SB>1</SB>of the disc part 11 and a height L<SB>2</SB>of the bullet nose holding part 15 is within a range of 0.4-2.5, and a circumferential face of the disc part 11 includes an annular slanted face part 13 (an angle &alpha; is within a range of 45-85 degrees). <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a slag warhead holding member used for holding a slag warhead, and a slag bullet including a slag warhead held by the slag warhead holding member.

  Patent Document 1 discloses an invention for increasing the accuracy required for a slag bullet used in a shotgun. In the invention of Patent Document 1, as shown in FIGS. 4 to 6, the accuracy of hitting is improved by using a slag bullet with a core 11 fitted in the internal space a of the bullet 9. FIG. 4 shows the core 11 having various shapes.

When the bullet 9 is fired, the core 11 is compressed in the axial direction by the pressure at the time of firing, and flies together in a state of being sunk into the internal space a of the bullet 9 (FIG. 6). Further, when the plastic wad 10 as shown in FIG. 2 is provided, the bullet 9 flies in a state separated from the wad 10.
Japanese Patent Publication No. 64-2880

  In the invention of Patent Document 1, as can be understood from FIG. 4, the thickness of the annular plate portion A of the core 11 is considerably smaller than the thickness (height) of the convex portion B of the core 11. For this reason, since the overall length in the state of FIG. 6 after the launch is not much different from the length of the bullet 9 (that is, the length other than the bullet 9 is small), the straightness is impaired and the accuracy of hitting is improved. There is room for improvement in that it cannot be raised sufficiently.

  The invention of the present application is a slag warhead holding member that can improve its accuracy when used in a slag bullet by improving the invention corresponding to the core 11 by improving the invention of Patent Document 1, and It is an object to provide a slag bullet using the same.

The invention of claim 1 is a solution to the problem.
A slag warhead holding member for holding a slag warhead,
The slug warhead holding member has a disk portion and a warhead holding portion formed so as to protrude on one surface of the disk portion, and further includes a recess straddling the disk portion and the warhead holding portion. Have
Slag warhead holding, wherein the ratio (L ₂ / L ₁ ) between the thickness L ₁ of the disk portion and the height L ₂ of the warhead holding portion from the disk portion surface is in the range of 0.4 to 2.5. Providing a member.

Since the slag warhead holding member of the present invention has a ratio of L ₂ / L ₁ within a predetermined range as described above, the slag warhead and the slag warhead holding member fly together after the slag bullet is fired. When compared with the relationship between the bullet 9 and the core 11 in the invention of Patent Document 1, the total length of L ₂ and L ₁ is large, and the length of the portion other than the slag warhead is also large. For this reason, the flight of the slag bullet is stabilized, and the accuracy of hitting when it is landed is further improved.

The invention of claim 3 is another solution to the problem.
A slag warhead holding member for holding a slag warhead,
The slug warhead holding member has a disk portion and a warhead holding portion formed so as to protrude on one surface of the disk portion, and further includes a recess straddling the disk portion and the warhead holding portion. Have
The disk portion has an upper peripheral surface portion from which the warhead holding portion is protruded, and an annular inclined surface portion that is inclined toward the central axis on the opposite surface side to the surface on which the warhead holding portion is formed,
The ratio (L ₂ / L ₁ ) between the thickness L ₁ of the upper peripheral surface portion of the disk portion and the height L ₂ from the surface of the disk portion of the warhead holding portion is in the range of 0.4 to 2.5. A slug warhead holding member is provided.

By using the above-mentioned L ₂ / L ₁ ratio within a predetermined range and having an annular inclined surface as the slag warhead holding member of the present invention, the slag bullet flying is more stable and the accuracy of hitting when landing Is further enhanced.

  According to a fifth aspect of the present invention, as a means for solving another problem, the concave portion of the slug warhead as well as a plurality of components including a detonator, a propellant and a feed are provided in the cartridge case. Provided is a slag bullet provided with a slag warhead holding member fitted with a warhead holding portion.

  For feeding, a cup wad or a combination of felt and cup wad can be used. The cup wad is preferably a resin cup wad that is plastically deformed by the pressure at the time of firing, and when the feed is a cup wad, the recess of the slug warhead and the cup wad are arranged adjacent to each other in the axial direction and facing each other. It is preferable.

  Since the slag bullet of the present invention uses the slag warhead holding member of the present invention, the flight after launch is stable and the accuracy of hitting when hit is further improved.

  Since the slag ammunition of the present invention uses a combination of a slag warhead holding member and a slag ammunition of a specific shape, the flight after the launch is stable, and the accuracy of hitting upon landing is further improved.

<Slag Warhead Holding Member-1>
1A is a front view of the slag warhead holding member 10A, and FIG. 2B is a back view of FIG. 2A (a plan view viewed from the bottom surface 10b side).

  The slag warhead holding member 10 </ b> A is made of high-density polyethylene, and includes a disk portion 11 and a warhead holding portion 15 formed to protrude on one surface of the disk portion 11. The disc part 11 and the warhead holding part 15 are integrally formed, and the respective central axes X coincide with each other.

  Since the warhead holding part 15 is fitted into the concave part (warhead cavity part) of the slag warhead, its outer shape and size are formed in accordance with the shape and size of the warhead cavity part. In FIG. 1A, the warhead holding portion 15 is composed of a columnar portion 16 and a truncated cone portion 17, but can be appropriately changed according to the shape of the warhead cavity portion described above.

  The slug warhead holding member 10 </ b> A has a concave portion 14 formed over the disc portion 11 and the warhead holding portion 15. The recess 14 is open to the bottom surface 10b side and is not penetrated to the top surface 10a side.

In the slag warhead holding member 10A, the ratio (L ₁ / L ₂ ) between the thickness L ₁ of the disc portion 11 and the height L ₂ of the warhead holding portion 15 from the surface of the disc portion 11 is 0.4 to 2.5. The range is preferably 0.5 to 2.0, more preferably 0.6 to 1.5.

<Slag warhead holding member-2>
2A is a front view of the slag warhead holding member 10B, and FIG. 2B is a back view of FIG. 2A (a plan view seen from the bottom surface 10b side).

  The slag warhead holding member 10 </ b> B is made of high-density polyethylene, and includes a disk portion 11 and a warhead holding portion 15 formed to protrude on one surface of the disk portion 11. The disc part 11 and the warhead holding part 15 are integrally formed, and the respective central axes X coincide with each other.

  The peripheral surface of the disc portion 11 is divided into an upper peripheral surface portion 12 and an annular inclined surface portion 13 that is inclined toward the central axis X. The outer diameter of the upper peripheral surface portion 12 is set to a dimension substantially equal to the inner diameter of the barrel. And the angle (alpha) which the bottom face 10b and the cyclic | annular inclined surface part 13 make has the preferable range of 45-85 degrees, and the range of 60-83 degrees is more preferable.

  Since the warhead holding part 15 is fitted into the concave part (warhead cavity part) of the slag warhead, its outer shape and size are formed in accordance with the shape and size of the warhead cavity part. In FIG. 1A, the warhead holding portion 15 is composed of a columnar portion 16 and a truncated cone portion 17, but can be appropriately changed according to the shape of the warhead cavity portion described above.

  The slug warhead holding member 10 </ b> B has a recess 14 formed across the disc portion 11 and the warhead holding portion 15. The recess 14 is open to the bottom surface 10b side and is not penetrated to the top surface 10a side.

In the slug warhead holding member 10B, the ratio (L ₁ / L ₂ ) between the thickness L ₁ of the disc portion 11 and the height L ₂ of the warhead holding portion 15 from the surface of the disc portion 11 is 0.4 to 2.5. The range is preferably 0.5 to 2.0, more preferably 0.6 to 1.5.

The L ₁ length of the slag warhead holding material 10B can be shorter than the L ₁ length of the slag warhead holding material 10A shown in FIG. 1, and can be in the range of 15 to 85% of the L ₁ length of 10A. it can.

<Slag bullet-1>
An embodiment of the slag bullet 20A will be described with reference to FIGS. FIG. 3 is an axial sectional view of the slag bullet 20A, and FIG. 4 is an axial sectional view showing a state after the slag bullet 20A of FIG. 3 is fired.

  One end opening of the cylindrical case 21 is closed with a base metal 22. A detonator 24 and a base wad 23 are disposed at the end on the base metal 22 side, and a necessary amount of explosive (propellant) 25 is filled.

  At the tip of the explosive 25, a feed (cup wads made of low density polyethylene) 26a is arranged, and at the tip of the gunpowder 25, the warhead holding portion 15 is fitted in the recess (warhead cavity) 28 of the slag warhead 27. A combination of slug warhead holding members 10B is arranged. The slag warhead holding member 10 </ b> B and the cup wad 26 a are both lighter than the slag warhead 27. A space is preferably provided between the top surface 10a of the slag warhead holding member 10B and the slag warhead 27 in order to prevent the top of the warhead 27 from becoming extremely thin due to deformation at the time of launch.

  As shown in the figure, a fold portion 21a is formed on the periphery of the other end opening of the cartridge case 21. The fold portion 21a is brought into contact with the slag warhead 27, whereby the shaft of the slag warhead 27 is formed. Directional movement is prevented.

  Next, the state change when the slag bullet 20A shown in FIG. 3 is loaded into a shotgun and fired will be described.

  After firing with the shotgun, the slug warhead 27 is pushed by the warhead holding member 10B by the combustion gas pressure of the gunpowder 25 during the movement inside the barrel, and is compressed and deformed in the axial direction and the outer diameter is enlarged. However, the outer diameter is then deformed to match the barrel inner diameter. At this time, the warhead cavity portion 28 of the slag warhead 27 is also compressed, but the warhead holding portion 15 of the warhead holding member 10B comes into close contact with the warhead cavity portion 28, resulting in a state as shown in FIG. For this reason, the compressive strength of the warhead holding member 10B is set to be higher than the compressive strength of the slag warhead 27 and the cup wad 26a. Further, the cup wad 26a is plastically deformed by the pressing at the time of launch.

Then, after jumping out from the barrel, as shown in FIG. 4, the slug warhead 27 and the warhead holding member 10B are brought into close contact with each other, and the central portion of the cup wad 26a is indented into the recess 14 of the warhead holding member 10B. Fly together. At this time, since the total length of L ₁₁ and L ₁₂ (particularly the length of L ₁₁ ) is longer than that in FIG. 6 of Patent Document 1, the flight is stabilized and the accuracy of hitting is improved. .

<Slag bullet-2>
An embodiment of the slag bullet 20B will be described with reference to FIGS. 5 is an axial sectional view of the slag bullet 20B, and FIG. 6 is an axial sectional view showing a state after the slag bullet 20B of FIG. 5 is fired.

  One end opening of the cylindrical case 21 is closed with a base metal 22. A detonator 24 and a base wad 23 are disposed at the end on the base metal 22 side, and a required amount of explosive (propellant) 25 is filled.

  A feed (cup wads) 26b is arranged at the tip of the explosive 25, and a disc-like feed (felt) 29 is placed at the tip. At the tip of the felt 29, a combination of the slag warhead holding member 10B in a state where the warhead holding portion 15 is fitted in a recess (warhead cavity) 28 of the slag warhead 27 is disposed. The slag warhead holding member 10 </ b> B and the cup wad 26 a are both lighter than the slag warhead 27. A space is preferably provided between the top surface 10a of the slag warhead holding member 10B and the slag warhead 27 in order to prevent the top of the warhead 27 from becoming extremely thin due to deformation at the time of launch.

  As shown in the figure, a fold portion 21a is formed on the periphery of the other end opening of the cartridge case 21. The fold portion 21a is brought into contact with the slag warhead 27, whereby the shaft of the slag warhead 27 is formed. Directional movement is prevented.

  Next, the state change when the slag bullet 20B shown in FIG. 5 is loaded into a shotgun and fired will be described.

  After firing with the shotgun, the slug warhead 27 is pushed by the warhead holding member 10B by the combustion gas pressure of the gunpowder 25 during the movement inside the barrel, and is compressed and deformed in the axial direction and the outer diameter is enlarged. However, the outer diameter is then deformed to match the barrel inner diameter. At this time, the warhead cavity portion 28 of the slag warhead 27 is also compressed, but the warhead holding portion 15 of the warhead holding member 10B comes into close contact with the warhead cavity portion 28, resulting in a state as shown in FIG. Since the felt 29 is fibrous and hardly deformed, the felt 29 is not in a state of being recessed into the concave portion 14 of the warhead holding member 10B as in the case of the cup watts 26a shown in FIGS.

Thereafter, after jumping out of the barrel, as shown in FIG. 6, it flies in a state where only the slug warhead 27 and the warhead holding member 10B are integrated. At this time, the total length of L ₂₁ and L ₂₂ (particularly the length of L ₂₁ ) is longer than that in FIG. 6 of Patent Document 1, so that the flight is stabilized and the accuracy of hitting is improved. .

Note that the total length of L ₂₁ and L ₂₂ is shorter than the total length of L ₁₁ and L ₁₂ in FIG. 4, but the annular inclination of the warhead holding member 10B is shorter than the state of FIG. Since the surface portion 13 is easily in contact with air, the accuracy of the hit accuracy equivalent to the slag bullet 20A of FIG. 3 can be maintained by the action of the annular inclined surface portion 13.

Examples 1-6, Comparative Examples 1-3
(Slag warhead holding member)
Using high-density polyethylene (trade name: Novatec HB330NP, manufactured by Nippon Polyethylene Co., Ltd.), a slag warhead holding member having the dimensions shown in Table 1 was manufactured in the shape shown in FIG. 1 or FIG. In Table 1, the maximum diameter of the disk portion indicates the outer diameter of the disk portion 11 for the holding member in FIG. 1 and the outer diameter of the upper peripheral surface portion 12 for the holding member in FIG.

(Slag bullet)
Using the slag warhead holding member shown in Table 1, a slag bullet having the structure shown in FIG. 3 or FIG. 5 was manufactured. However, in the slag bullet (FIG. 5) using the holding member 10A of FIG. 1, the holding member 10B becomes the holding member 10A. A known member was used except for the slag warhead holding member.

(Launch test)
Each slag bullet shown in Table 1 was used, the gun was fixed on the launch pad, and a gauge number 12 and a 30-inch muzzle throttle flat tube were used. In the test, at the initial speed shown in Table 1, slug ammunition was fired five times toward the target 50 m ahead, and the diameter of the smallest circle including all five bullet holes on the target was measured, and the accuracy was determined. The smaller the diameter, the higher the accuracy of hit. In addition, the states after hitting a target were the states as shown in FIG. 6 in Examples 1 to 4, and Comparative Example 1, and Examples 5 and 6 were in the state as shown in FIG. The results are shown in Table 1.

  The accuracy of hits in Examples 1 to 6 were all less than 10 cm, and were higher than those in Comparative Examples 1 to 3.

  From the comparison between Example 1 and Example 4, the holding member having the annular inclined surface of FIG. 2 was better in accuracy than the holding member of FIG.

From the comparison between the length of L ₂₂ + L ₂₁ in Example 4 and the length of L ₁₂ + L ₁₁ in Examples 5 and 6, the length corresponding to L ₂₂ + L ₂₁ or L ₁₂ + L ₁₁ is larger. Hit accuracy was good.

(A) is a front view of the slag warhead holding member of this invention, (b) is a back view of (a). (A) is a front view of the slug warhead holding member which is another embodiment of the present invention, and (b) is a back view of (a). The axial direction sectional view of the slag bullet using the slag warhead holding member of the present invention. The figure which shows the state after the slag bullet of FIG. 3 was fired. The axial direction sectional view of the slag bullet which is another embodiment using the slag warhead holding member of the present invention. The figure which shows the state after the slag bullet of FIG. 5 was fired.

Explanation of symbols

10A, 10B Slag warhead holding member 11 Disc portion 12 Upper peripheral surface portion 13 Annular inclined surface portion 14 Recess 15 Warhead holding portion 20A, 20B Slag bullet 27 Slag warhead

Claims (6)

A slag warhead holding member for holding a slag warhead,
The slug warhead holding member has a disk portion and a warhead holding portion formed so as to protrude on one surface of the disk portion, and further includes a recess straddling the disk portion and the warhead holding portion. Have
Slag warhead holding, wherein the ratio (L ₂ / L ₁ ) between the thickness L ₁ of the disk portion and the height L ₂ of the warhead holding portion from the disk portion surface is in the range of 0.4 to 2.5. Element. The slag warhead holding member according to claim 1, wherein L ₂ / L ₁ is in a range of 0.5 to 2.0. A slag warhead holding member for holding a slag warhead,
The slug warhead holding member has a disk portion and a warhead holding portion formed so as to protrude on one surface of the disk portion, and further includes a recess straddling the disk portion and the warhead holding portion. Have
The disk portion has an upper peripheral surface portion from which the warhead holding portion is protruded, and an annular inclined surface portion that is inclined toward the central axis on the opposite surface side to the surface on which the warhead holding portion is formed,
The ratio (L ₂ / L ₁ ) between the thickness L ₁ of the upper peripheral surface portion of the disk portion and the height L ₂ from the surface of the disk portion of the warhead holding portion is in the range of 0.4 to 2.5. Slag warhead holding member. The L ₂ / L ₁ is in the range of 0.5 to 2.0, and the angle α formed by the surface opposite to the surface on which the warhead holding portion is formed and the annular inclined surface portion is in the range of 45 to 85 °. The slag warhead holding member according to claim 3.   In the cartridge case, a plurality of components including a detonator, a propellant and a feed are provided, and the slag warhead holding member according to any one of claims 1 to 4 is fitted into the recess of the slag warhead. The slug ammunition.   The slag according to claim 5, wherein the feed is a resin-made cup wad that is plastically deformed by a pressure at the time of firing, and the concave portion of the slag warhead and the cup wad are arranged adjacent to each other in the axial direction and facing each other. Bullet.

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