JP2016102617A - Tracer bullet and process of manufacture of tracer bullet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tracer bullet capable of stabilizing fixing of light-emitting material and a process of manufacture of the tracer bullet.SOLUTION: A tracer bullet 10 has an outside part of a bullet core 11 covered with a sheath 15 and a sheet-like light-emitting material 20 exposed at its rear end part. The sheath 15 has a case part 16 having a rear end opened and storing the bullet core 11, and an extension part 17 extending from an opening end of the case part 16 inward. The light-emitting material 20 is overlapped on the rear surface of the bullet core 11 and held by the extension part 17 and the bullet core 11. In order to manufacture the tracer bullet 10, at first, the bullet core 11 and the light-emitting material 20 are stored in the case body having a rear end opening and at the same time the light-emitting material 20 is kept to be overlapped on the rear surface of the bullet core 11. Then, the opening end of the case body is bent inward to form the sheath 15 and then the light-emitting material 20 is held by the bent part and the bullet core 11.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fluorescent bullet in which a luminescent material is exposed to the outside and a method for manufacturing the same.

  Conventionally, as this type of fluorescent bullet, one in which a light emitting material is fixed to the rear end of a bullet with an adhesive is known (for example, see Patent Document 1).

US Pat. No. 8,402,896 (FIGURE 3, 7)

  However, in the above-described fluorescent bullet, there is a possibility that the light emitting material may be peeled off from the bullet, and there is a problem that the fixing of the light emitting material is unstable.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a fluorescent bullet capable of stabilizing the fixation of a light emitting material and a method for manufacturing the same.

  In order to achieve the above object, a method for producing a fluorescent bullet according to the first aspect of the present invention provides a method for producing a fluorescent bullet in which the outer side of a bullet core is covered with a shell and a light emitting material is exposed at a rear end opposite to the warhead. In the manufacturing method, the core and the light emitting material are accommodated in the case body whose rear end is open, and the light emitting material is overlapped on the rear surface of the core, and the case body is folded inward to form the armor. However, it has a feature in that the light emitting material is sandwiched between the bent portion and the core.

  The invention of claim 2 is characterized in that, in the method of manufacturing a fluorescent bullet according to claim 1, the light emitting material is temporarily fixed to the rear surface of the core, and then the core and the light emitting material are accommodated in the case body. Have.

  The invention of claim 3 is characterized in that, in the method for manufacturing a fluorescent bullet according to claim 1, after the bullet is received in the case body, the light emitting material is overlapped on the rear surface of the bullet.

  The invention of claim 4 is characterized in that, in the method for manufacturing a fluorescent bullet according to any one of claims 1 to 3, after the bent portion is formed, the bent portion is pressed forward.

  The fluorescent bullet according to the invention of claim 5 is a fluorescent bullet in which the outer side of the bullet core is covered with the shell and the luminescent material is exposed at the rear end opposite to the warhead. A case portion that accommodates the heart, and a protruding portion that protrudes inward from the opening end of the case portion, and the light emitting material is stacked on the rear surface of the bullet and is sandwiched between the protruding portion and the bullet It has features.

  According to a sixth aspect of the present invention, in the fluorescent bullet according to the fifth aspect, the light emitting material is formed in a sheet shape, and the overhanging portion is formed in an annular shape so as to overlap the entire circumferential direction of the outer peripheral portion of the light emitting material. Has characteristics.

[Invention of claims 1 to 3]
In the method for manufacturing a fluorescent bullet according to the present invention, the core and the light emitting material are accommodated in a case body having an open rear end, and the cover body is formed by bending the open end of the case body inward. And a luminescent material is pinched | interposed by the bending site | part and a bullet core. As described above, according to the present invention, it becomes possible to sandwich the light emitting material between the bullet core and the armor, and the light emitting material can be fixed more stably than the conventional fluorescent bullet in which the light emitting material is bonded and fixed. Figured.

  Here, as a method of accommodating the bullet and the luminescent material in the case body, as in the invention of claim 2, after temporarily fixing the luminescent material on the rear surface of the bullet, the bullet and the luminescent material are attached. The case may be accommodated in the case body, or the bullet may be accommodated in the case body and the light emitting material may be stacked on the rear surface of the bullet as in the invention of claim 3. In addition, according to invention of Claim 2, it becomes possible to suppress the position shift of the light-emitting material with respect to a bullet core. Further, according to the invention of claim 3, it is possible to manufacture a fluorescent bullet in the same manner as a normal bullet without a light emitting material.

[Invention of claim 4]
According to the invention of claim 4, the shape of the rear end portion of the fluorescent bullet is adjusted, and the fixing of the light emitting material is further stabilized.

[Invention of claim 5]
According to the fluorescent bullet according to the invention of claim 5, since the light emitting material is sandwiched between the overhanging portion of the armor and the core, the light emitting material is fixed as compared with the conventional fluorescent bullet to which the light emitting material is bonded and fixed. Can be stabilized.

[Invention of claim 6]
According to the invention of claim 6, since the overhanging portion is overlapped over the entire circumferential direction of the outer peripheral portion of the sheet-like light emitting material, it is possible to narrow a range in which light of the light emitting material leaks by the overhanging portion. Thereby, it becomes possible to restrict the range in which the light of the luminescent material is visible to the emission side of the fluorescent bullet.

1 is a perspective view of a fluorescent bullet according to a first embodiment of the present invention. (A) Side cross-sectional view, (B) Bottom view of fluorescent bullet Cross section of a normal bullet (A) The figure which shows the process which accommodates a bullet center in a case body in the manufacturing method of a normal bullet, (B) The figure which shows the bending process of the opening end of a case body, (C) The pressing process of the bending part of an armor Figure showing (A) The figure which shows the process of sticking a luminescent material to a bullet core, (B) The figure which shows the process of accommodating a bullet core and a luminescent material in a case body. (A) The figure which shows the bending process of the opening end of a case body, (B) The figure which shows the press process of the bending part of a shell (A) The figure which shows a mode that the light of a fluorescent bullet leaks, (B) The figure which shows a mode that the light of the conventional fluorescent bullet leaks The figure which shows the process of accommodating a bullet core and a luminescent material in a case body in the manufacturing method of the fluorescent bullet which concerns on 2nd Embodiment of this invention. Cross-sectional view of a fluorescent bullet according to a modification (A) Cross-sectional view around the luminescent material in the fluorescent bullet according to the modification, (B) Cross-sectional view around the luminescent material in the fluorescent bullet according to the modification.

[First Embodiment]
A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the fluorescent bullet 10 of the present embodiment has an overall shape in which one end of a cylinder is sharpened in a substantially conical shape, and is fired with the sharpened portion as a warhead. Further, the light emitting material 20 is exposed at the rear end portion of the fluorescent bullet 10 opposite to the warhead (see FIG. 2B). Thereby, it is possible to visually recognize the light of the light emitting material 20 from the launch side of the fluorescent bullet 10.

  As shown in FIG. 2A, the fluorescent bullet 10 has a structure in which the outer side of the bullet core 11 is covered with a case-shaped armor 15. The bullet core 11 includes a cylindrical body portion 11B, a pointed portion 11A that is tapered in front of the body portion 11B, and a tapered portion 11C that is constricted in a truncated cone shape toward the rear side behind the body portion 11B. And is composed of. The bullet core 11 is made of a metal such as iron or steel.

  The armor 15 is composed of a case portion 16 whose rear end is open and an overhang portion 17 that protrudes inward from the open end of the case portion 16. The inner shape of the case portion 16 is substantially the same shape as the bullet core 11. Specifically, the case portion 16 includes a cylindrical barrel 16B and a tip sharp portion 16A that is narrowed in a substantially conical shape from the front end of the barrel. The rear end portion of the body portion 16B has a tapered shape that is reduced in diameter toward the rear side. The tip end surface of the pointed portion 11 </ b> A of the bullet core 11 is flat, and a gap 18 is formed between the tip end surface of the pointed portion 11 </ b> A and the tip end portion of the case portion 16. Note that the shell 15 is made of, for example, a copper alloy, and the thickness of the shell 15 is about 0.5 to 0.7 mm.

  As shown in FIG. 2A, in the fluorescent bullet 10 of the present embodiment, the above-described light emitting material 20 is in the form of a sheet and is sandwiched between the overhanging portion 17 of the armor 15 and the bullet core 11. ing. Thereby, the light emitting material 20 is prevented from coming off, and the light emitting material 20 is more stably fixed as compared with a conventional fluorescent bullet in which the light emitting material is fixed only by an adhesive. In addition, although the thickness of the light emitting material 20 is about 0.1 mm and is thinner than the thickness of the shell 15, the light emitting material 20 is used in the examples of FIGS. 2A and 5 to 7. The thickness of is greatly exaggerated.

  Here, as shown in FIG. 2B, the overhanging portion 17 protrudes from the entire circumferential direction at the opening end of the case portion 16 and has an annular shape. That is, the overhang portion 17 is disposed so as to overlap the entire circumferential direction of the outer peripheral portion of the light emitting material 20. Thereby, it becomes possible to narrow the range in which the light of the light emitting material 20 leaks by the overhanging portion 17 (see FIG. 7A), and the range in which the light of the light emitting material 20 can be visually recognized is limited to the launch side of the fluorescent bullet 10. It becomes possible to do. In FIG. 7B, a conventional fluorescent bullet 1 is shown. In this fluorescent bullet 1, the overhanging portion 17 is addressed to the rear surface of the core 11, and the light emitting material 20 is adhered and fixed to the rear surface of the core 11 and is accommodated inside the overhanging portion 17. Specifically, the rear surface of the light emitting material 20 is flush with the rear surface of the overhang portion 17. As can be seen from the comparison between FIG. 7A and FIG. 7B, the range R1 in which the light of the light emitting material 20 is visible in the fluorescent bullet 10 is the range in which the light of the light emitting material 20 is visible in the conventional fluorescent bullet 1. It is narrower than the range of R2.

  This completes the description of the configuration of the fluorescent bullet 10. Next, a method for manufacturing the fluorescent bullet 10 will be described. As a preceding step, first, a method for manufacturing the normal bullet 100 (hereinafter referred to as “normal bullet 100”) shown in FIG. 3 will be described.

  As shown in FIG. 3, the normal bullet 100 has a configuration in which the luminescent material 20 is removed from the fluorescent bullet 10, and the outer side of the bullet core 11 is covered with an armor 15. The production of the normal bullet 100 is performed as follows.

  That is, first, as shown in FIG. 4A, the bullet 11 is accommodated in the case body 30 with the sharpened portion 11A as the tip. Here, the case body 30 includes a cylindrical portion 31A and a conical portion 31B that is constricted in a substantially conical shape from the front end of the cylindrical portion 31A. The bullet core 11 is common between the normal bullet 100 and the fluorescent bullet 10.

  Next, as shown in FIG. 4B, the rear end portion of the case body 30 is bent to form the shell 15. Specifically, the case body 16 is formed by pressing the rear end portion of the case body 30 against the taper portion 11C of the bullet core 11 to form a taper shape, and a tension projecting inward from the rear end of the taper portion. A protruding portion 17 is formed.

  Next, as shown in FIG. 4C, the projecting portion 17 is pressed forward with the pressing tool 90 to adjust the shape of the rear end portion of the upper 15. Specifically, the rear surface of the armor 15 is flattened, and the overhanging portion 17 is brought into close contact with the rear surface 11M of the bullet core 11. Thus, the normal bullet 100 is completed.

  This completes the description of the method for manufacturing the normal bullet 100. Next, a method for manufacturing the fluorescent bullet 10 will be described.

  In order to manufacture the fluorescent bullet 10, first, the light emitting material 20 is temporarily fixed to the rear surface 11M of the bullet core 11 (see FIG. 5A). Next, the core 11 and the light emitting material 20 are accommodated in the case body 30 (see FIG. 5B). Here, the temporary fixing of the light emitting material 20 may be performed so long as the positional deviation with respect to the core 11 is suppressed, and the light emitting material 20 may be peeled off from the core 11 after being accommodated in the case body 30. In addition, if the light emitting seal | sticker by which the adhesive material was apply | coated to one side is used as the light emitting material 20, it will become possible to perform an affixing operation | work easily.

  When the core 11 and the light emitting material 20 are accommodated in the case body 30, the same process as the method for manufacturing the normal bullet 100 is performed. That is, first, the upper end of the case body 30 is bent to form the shell 15 (see FIG. 6A). At this time, the light emitting material 20 is sandwiched between the overhanging portion 17 of the shell 15 and the bullet core 11. The overhanging portion 17 corresponds to a “bending portion” of the invention of claim 1.

  Next, as shown in FIG. 6 (B), the overhanging portion 17 is pressed forward with the pressing tool 90, and the shape of the rear end portion of the upper 15 is adjusted. At this time, the overhanging portion 17 is pressed against the light emitting material 20, and the light emitting material 20 is sandwiched between the overhanging portion 17 and the bullet core 11. Thus, the fluorescent bullet 10 is completed.

  This completes the description of the method for manufacturing the fluorescent bullet 10. Next, the effect of the fluorescent bullet 10 and the method of manufacturing the fluorescent bullet 10 will be described.

  According to the fluorescent bullet 10 and the method of manufacturing the fluorescent bullet 10 of the present embodiment, the light emitting material 20 can be sandwiched between the core 11 and the shell 15 and the conventional fluorescent bullet 1 in which the light emitting material 20 is bonded and fixed. As compared with the above, the fixation of the light emitting material 20 is stabilized. Moreover, in the method for manufacturing the fluorescent bullet 10 of the present embodiment, the process after the core 11 is accommodated in the case body 30 is the same as the method for manufacturing the normal bullet 100. The bullet core 11 and the case body 30 used for manufacturing the normal bullet 100 can be used, and the manufacturing equipment for the normal bullet 100 can be used.

  Moreover, in the manufacturing method of the fluorescent bullet 10 of this embodiment, since the light emitting material 20 is affixed on the rear surface 11M of the bullet core 11, and the bullet core 11 and the light emitting material 20 are accommodated in the case body 30, the bullet 11 It is possible to suppress the positional deviation of the light emitting material 20 with respect to the above.

  Furthermore, in the method for manufacturing the fluorescent bullet 10 according to the present embodiment, the protruding end 17 is pressed to the front side after the opening end of the case body 30 is bent inward to form the extended portion 17. It is possible to arrange the shape of the light emitting material 20 and to stabilize the light emitting material 20 more stably.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. The present embodiment is a modification of the method for manufacturing the fluorescent bullet 10 of the first embodiment, and the process of housing the core 11 and the light emitting material 20 in the case body 30 is different. Specifically, as shown in FIG. 8, the bullet 11 is accommodated in the case body 30 with the pointed portion 11 </ b> A as the tip, and then the light emitting material 20 is overlapped on the rear surface of the bullet 11.

  According to the method for manufacturing the fluorescent bullet 10 of the present embodiment, it is possible to stabilize the fixation of the light emitting material 20 as in the first embodiment. Further, in the present embodiment, unlike the first embodiment, it is not necessary to newly provide a step of attaching the light emitting material 20 to the core 11, and the fluorescent bullet 10 is manufactured in the same process as the manufacturing process of the normal bullet 100. It becomes possible to do.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications are possible within the scope of the invention other than the following. It can be changed and implemented.

  (1) Like the fluorescent bullet 10V shown in FIG. 9, the bullet core 11 may be composed of a first bullet component 13A and a second bullet component 13B. In this case, in the manufacture of the fluorescent bullet 10V, similar to the first embodiment, the light emitting material 20 is pasted on the rear surface of the second core structure 13B, and then the first and second core structures 13A. , 13B may be accommodated in the case body 30. Similarly to the second embodiment, the first core constituent body 13A, the second core constituent body 13B, and the light emitting material 20 are sequentially arranged in the case body 30. The opening end of the case body 30 may be bent. Note that the first and second core structures 13A and 13B may be made of the same material or different materials.

  (2) In the above embodiment, the pressing step of the overhang portion 17 is performed only once, but may be performed a plurality of times. Thereby, it is possible to suppress variations in the shape of the upper 15. In addition, in this structure, you may vary the press location of each press process.

  (3) In the above embodiment, the light emitting material 20 may be thickened. In this case, the length of the bullet 11 in the fluorescent bullet 10 may be made shorter than the length of the bullet 11 in the normal bullet 100. Even with this configuration, the light emitting material 20 is sandwiched between the overhanging portion 17 of the armor 15 and the core 11, so that it is possible to stabilize the light emitting material 20.

  (4) In the above embodiment, the light emitting material 20 is a sheet having a substantially uniform thickness. However, as shown in FIG. 10A or FIG. The structure provided with 20T may be sufficient.

  (5) The bullet of the present invention is not limited to the shape of the bullet 11 of the above-described embodiment. For example, it may have a shape in which the rear portion is straight without providing the tapered portion 11C. Alternatively, the outer peripheral surface may be provided with irregularities and grooves.

DESCRIPTION OF SYMBOLS 10 Fluorescent bullet 11 Bullet 15 Covered 16 Case part 17 Overhang | projection part 20 Luminescent material 30 Case body

Claims (6)

In the method of manufacturing a fluorescent bullet in which the outer side of the bullet core is covered with armor and the luminescent material is exposed at the rear end opposite to the warhead,
The casing and the light emitting material are accommodated in a case body whose rear end is open, and the light emitting material is overlaid on the rear surface of the bullet.
A method of manufacturing a fluorescent bullet, wherein the case body is formed by bending an opening end of the case body inward, and the light emitting material is sandwiched between the bent portion and the core.   The method for producing a fluorescent bullet according to claim 1, wherein the light emitting material is temporarily fixed to a rear surface of the bullet, and then the bullet and the light emitting material are accommodated in the case body.   The method for manufacturing a fluorescent bullet according to claim 1, wherein after the bullet is received in the case body, the light emitting material is stacked on a rear surface of the bullet.   The method for producing a fluorescent bullet according to any one of claims 1 to 3, wherein the bent part is pressed forward after the bent part is formed. In the fluorescent bullet where the outer side of the bullet is covered with armor and the luminescent material is exposed at the rear end opposite to the warhead,
The armor has a case portion that opens at the rear end and accommodates the core, and an overhang portion that protrudes inward from the opening end of the case portion,
A fluorescent bullet characterized in that the light emitting material is stacked on the rear surface of the bullet and is sandwiched between the projecting portion and the bullet. The light emitting material has a sheet shape,
The fluorescent bullet according to claim 5, wherein the projecting portion is formed in an annular shape and is overlapped over the entire circumferential direction of the outer peripheral portion of the light emitting material.

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