JPH0356798Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the field of cartridges incorporating a bullet firing device.

(Prior art) A conventional cartridge whose head is filled with a bullet has a compressed spring built into the cartridge case.
Air pressure generated by compressing the air inside an airtight cartridge case instantly by using the elastic force of a spring or the elasticity that is a characteristic of a spring. in,
It was a method in which the bullet loaded in the head of the cartridge was fired.

There were also models that filled with compressed gas.

(Problems to be solved by the present invention) The present invention compresses the air inside the cartridge using the elasticity of the spring, like a conventional cartridge, and fires the bullet using the pressure of the compressed air. The cartridge case has a double structure consisting of a cartridge case and an inner case, and the inner case is filled with compressed gas (nitrogen, carbon dioxide, liquefied gas, etc. alone or in combination), and an adjustment support is used. By striking only the bottom of the bullet, the compressed gas filled in the bullet is ejected, and the pressure of the compressed gas causes the bullet to be fired. Unlike those that compress air, by adjusting the magnitude of the compression force and filling it, you can freely adjust the flight distance of the bullet, and the filled compressed gas can be released from inside the inner case. This is to ensure that no leaks occur.

(Means for Solving the Problem) The present invention forms a hollow cartridge having a recess by bending a horizontal bottom portion having an opening inward by a predetermined length, and A cartridge case with a built-in bullet firing device, which is formed by forming an inner case having a bottom part with a through hole to be inserted and a stepped part at the upper part, and the bottom part of the inner case is inserted into a recess of a cartridge case to assemble both cases. The lower part has a concave part on the outer periphery, and has a bottom part that can be inserted into the inner case, and the upper part has an outer flange part, an inner flange part, and a protruding part, and reaches the bottom part from the upper opening. forming an adjustment support having a bottomed elongated groove and a through hole connected to the groove above the bottom;
A packing is inserted into the recess of the body to fit the support into the inner case, a spring is placed on the inner flange, a through hole is fitted into the protrusion, and a small hole communicates with the hole. and a blowout prevention body having a locking part on the inside and a recess into which a gasket is fitted on the outer periphery, the body fits into the protrusion, and maintains airtightness with the upper inner part of the inner case. and placed on the outer flange, with a bottomed protrusion below and a locking part above the protrusion.
A recess into which the gasket is inserted and a small hole are formed above the locking part, and an injection body having a bottomed injection hole is formed on the inner side, and the protruding part of the body is inserted into the spring, and the locking part is inserted. is placed on the spring, and the injector is inserted into the blowout preventer so that the gasket inserted into the recess is locked with the locking part of the blowout preventer, and the blade with the through-support part inserted is placed above the inner case. This is a cartridge case with a built-in bullet firing device, which is characterized by fitting into the bearing part and loading the bullet into the bearing part.

(Example) Reference numeral 1 denotes a hollow cartridge case formed by drawing or cutting to form a cartridge case a, and has the following configuration. That is, the bottom part 2 having the opening 3 is horizontally extended by a predetermined length, and the end edge is bent inward by a predetermined length at right angles to form the recess 4. The above is the configuration of the cartridge case 1. 5 is a hollow inner case that is inserted into the case 1;
It consists of the following composition. That is, the case 5 has a through hole 6 that fits into the recess 4 of the cartridge case 1.
The case 5 is connected to the cartridge case 1 with a bottom part 7 and a stepped part 8 on the inside of the upper part that connects with the through hole 6.
A flange portion 9 that is engaged with the upper opening of the case 1 when inserted into the case 1, and a recess portion 10 are formed on the outer periphery above the flange portion 9. The above is the configuration of the inner case 5. 11
is an adjustment support that is fitted into the inner case 5 and has the following structure. That is, it has a recess 2 on the outer periphery of the lower part, a bottom part 13 that can be fitted into the inner case 5, and a collar part extending upward from the bottom part 13 and protruding at right angles to the axial direction. An outer flange 15 and an inner flange 16 are formed via a protrusion 14 that protrudes parallel to the axial direction. Reference numeral 17 designates a bottomed elongated groove formed from the upper opening 18 of the protrusion 14 to the bottom 13;
A through hole 19 connected to 7 is formed. The above is the adjustment support 11. The support body 11 is attached to the inner case 5
In order to fit inside the inner case 5, the bottom part 13 with the gasket 20 fitted into the recess 12 may be inserted into the through hole 6 of the inner case 5. Thereby, the airtightness of the compressed gas etc. filled in the inner case 5 can be maintained. 2
Reference numeral 1 denotes a spring that is fitted into the protrusion 14 and placed on the inner flange 16. Reference numeral 22 denotes a blowout preventer, which has the following configuration. A through hole 23 that fits into the protrusion 14 , and a small hole 24 that communicates with the hole 23 and is located slightly above the protrusion 14 .
are bored, have a locking part 25 on the inside, and form a recess 27 on the outer periphery into which a gasket 26 is inserted. The above is the blowout preventer 22. To assemble it, put the gasket 26 in the recess 27 as shown in the drawing.
is inserted from the outside of the protruding part 14 and placed on the outer flange part 15, and then fitted to the step part 8 of the inner case 5 via the packing 26 while maintaining airtightness. Reference numeral 28 denotes an injection body, which has the following configuration. That is, there is a bottomed protrusion 29 at the bottom,
A locking portion 30 is formed above the protrusion 29, a recess 32 into which a gasket 31 is inserted is formed above the locking portion 30, and an injection hole 3 is formed in the recess 32.
A small hole 34 connected to 3 is bored. Note that the injection body 28 is formed in a shape that can be inserted into the through hole 23 of the blowout prevention body 22. The above is the injection body 28, and in order to assemble the body 28 with the blowout prevention body 22,
The protruding part 29 of the injection body 28 is fitted into the spring 21, the locking part 30 is placed above the spring 21, and the gasket 31 fitted into the recess 32 is engaged with the locking part 25 of the blowout preventer 22. Assemble in the stopped state. Reference numeral 35 denotes a penetrating support portion, which is fitted into the penetrating bullet 36 to prevent it from flying out to the outside, and a bullet 37 is loaded into the support portion 35. The blade 36 is fitted with a gasket 3 in the recess 10 of the inner case 5.
8 and fit into the upper opening of the case 5.

(Operation) Next, the operation of the present invention will be explained. In order to inject compressed gas into the cartridge case a constructed as described above, the nozzle of a gas cylinder (not shown) is inserted into the injection hole 33 of the injection body 28 with no bullet 37 loaded therein. At the time of this insertion, the cylinder is pressed slightly toward the bottom 2 of the cartridge case 1.
Due to this pressing force, the injection body 28 and the packing 31
Only the spring 21 is slightly pressed and lowered.
During this descent, the small hole 34 that was blocked by the packing 31 is pressed by the recess 32 and appears below the partially thinned packing 31, and at the same time, the small hole 34 communicating from the injection hole 33 is opened. Furthermore, the adjustment support 11 in a fixed state from inside the inner collar 16
A predetermined amount of compressed gas is filled into the inner groove 17, from the groove 17 into the through hole 19, and further into the inner case 5. The filled compressed gas, etc. is transferred to the blowout preventer 1
1 will not cause any leakage. When the cylinder is filled with a predetermined amount of compressed gas as described above, when the cylinder is pulled out, the spring 21 expands and pushes the injector 28 upward, causing the gasket 31 to cover the small hole 34 and at the same time locking the locking part 25. It is locked to prevent the filling gas from blowing out. After filling with gas, the bullet 37 is loaded into the bearing portion 35.

Next, in order to fire the loaded bullet 37, the process described below is performed. That is, after loading the cartridge case a into the magazine, the adjustment support 11 that constitutes the cartridge case a
When the bottom part 13 of the cartridge case 1 and the inner case 5 are fixed and do not move, the adjustment support 11 fitted to the inner case 5 is forced to move forward, and this support In proportion to the advancement of the body 11, the blowout prevention body 22, the spring 21, and the injection body 28 placed on both the inner and outer flanges 16, 15 move forward instantly, and the inner case 5
Compressed gas is ejected from the gap between the ejection preventer 22 and the inner case 5, whose airtightness has been broken, and the pressure of this gas causes the bullet 37 being loaded to fire. The above is the firing process of the bullet 37.

(Effects) (1) In the present invention, the inner case and the blowout preventer are fitted to the outer flange of the adjustment support through the packing, so that the compressed gas filled in the inner case can be prevented from leaking. I was able to do it.

(2) In addition, in the present invention, by hitting the bottom of the adjustment support fitted in the inner case with a hammer, the blowout preventer placed on the outer flange can move the support forward. advances in proportion to the inner case, forms a gap with the inner case, instantaneously ejects the compressed gas filling the case, and uses this ejection force to fire the loaded bullet, Therefore, it has the advantage of being of great interest to model gun enthusiasts.

[Brief explanation of the drawing]

FIG. 1 is an enlarged longitudinal cross-sectional view of a cartridge housing the bullet firing device of the present invention. a...Cartridge case, 1...Cartridge case, 2...
...bottom, 3...opening, 4...recess, 5...inner case, 6...through hole, 7...bottom, 8...step, 9...flange, 10...recess, 11... ...adjustment support, 12... recess, 13... bottom, 14... protrusion, 15... outer flange, 16... inner flange, 1
7...Groove, 18...Opening, 19...Through hole,
20...Patsukin, 21...Spring, 22...
...Blowout prevention body, 23...Through hole, 24...Small hole,
25... Locking part, 26... Packing, 27... Recessed part, 28... Injector, 29... Protruding part, 30...
Locking part, 31... Packing, 32... Recessed part, 33
... Injection hole, 34 ... Small hole, 35 ... Supporting part, 3
6...Bullet, 37...Bullet, 38...Patsukin.

Claims (1)

[Scope of utility model registration request] A horizontal bottom portion having an opening is bent inward by a predetermined length to form a hollow cartridge having a recess, and the bottom portion has a through hole that fits into the recess of the case, and a stepped portion at the upper portion. In a cartridge case with a built-in bullet launcher, the bottom part of the inner case is fitted into a recess of a cartridge case to assemble both cases. a bottom part that can be inserted into the
The upper part has an outer flange part, an inner flange part, and a protruding part, a bottomed elongated groove part that reaches from the upper opening to the bottom part, and a through hole connected to the groove part above the bottom part. A support is formed, a packing is inserted into the recess of the body to fit the support into the inner case, a spring is placed on the inner flange, and a through hole is fitted into the protrusion; A blowout prevention body is formed, which has a small hole communicating with the hole, a locking part on the inside, and a recess into which a gasket is fitted on the outer periphery. and a bottomed protrusion below, a locking part above the protrusion, and a recess into which the packing is inserted above the locking part. A small hole is formed into an injection body having a bottomed injection hole on the inside, the protruding part of the body is inserted into the spring, the locking part is placed on the spring, and the gasket is inserted into the recess. The injector was inserted into the blowout prevention body so that it was locked in the locking part of the blowout prevention body, the bullet with the through-bearing part inserted was fitted into the upper part of the inner case, and the bullet was loaded into the bearing part. A cartridge with a built-in bullet firing device.