JPS5916718Y2 - Closing machine for internal reduction gun for cartridge guns - Google Patents

Description

[Detailed description of the invention] The present invention is designed to fire a small-caliber sub-fire gun that uses cartridge-type ammunition and is inserted into the barrel of a cartridge gun for the 11th training session. This invention relates to a closing machine with a safety device.

In the past, ammunition subguns were attached to the top of a cartridge gun for target practice.

In this case, the subgun had its own closing mechanism, and even though the cartridge gun was out of line for operation, it was not possible to practice operating the cartridge closing mechanism.

Moreover, it could not, of course, be attached to a cartridge gun with a turret, and therefore could not be used.

On the other hand, for these reasons, an internal compact gun for cartridge guns, which can be used by inserting the gun into the barrel of the cartridge gun and partially modifying the closing mechanism for cartridge guns, has been developed. However, in the case of a cartridge gun in which the chain door is automatically rotated by a spring, if the rotation speed is too fast, the firing pin may protrude due to inertia at the end of rotation, or it may explode. There are accidents in which the firing pin is struck with a hammer due to an incorrect operation before the threaded part and the breech ring part engage, causing an accidental firing.

In such a case, it is expected that the chain door, screw, breech head, etc. will be blown off backwards by the projectile gas, so to prevent this risk, the screw thread and breech ring thread should be It is necessary to provide a safety measure that prevents firing unless the two are securely engaged.

The object of this invention is to obtain a closing machine with a firing safety device for an internal control gun for cartridges, which can automatically and reliably prevent such explosions due to inertia and erroneous operation without manual operation. This is the purpose.

Hereinafter, the present invention will be explained based on the accompanying drawings showing one embodiment thereof.

In FIG. 1, a subgun barrel 1 is inserted concentrically with a cartridge gun barrel 2, and is fixed to a breech ring 3.

A chain door 6 is attached to the ear part 4 of the breech ring 3 so as to rotate about 100 degrees around a shaft 5, and a spring 7 for automatically rotating the chain door 6 is connected to the shaft 5. are placed concentrically.

Further, a hammer 8 is provided on the chain door 6 so as to strike the head of the firing pin 10 by rotating around a shaft 9.

Furthermore, a shaft portion 11 is provided at the tip of the chain door 6 so that when the chain door 6 rotates and comes to the position shown in FIG. ing.

Next, a screw 12 is rotatably inserted into the outer periphery of the shaft 11 of the chain door 6, and in the state shown in FIGS. 1 and 2, the screw 13 of the screw 12 is It engages with the threaded portion 14 of the breech ring 3, and also has a threaded body 1 as shown in FIG.
2 by a predetermined angle of rotation, the threaded portion 1 of the screw body 12
3 and the threaded portion 14 of the breech ring 3 are disengaged.
A threaded portion 13 having a notch is provided on the outer periphery.

A swivel head 15 is fitted inside the shaft portion 11 of the chain door 6, and is secured by a nut 17 via a spring 16 so as not to come off. It is made unrotatable with respect to the shaft portion 11 of the chain door 6.

Note that the current surface 19 of the free head 15 rotatably contacts the screw 12 and serves to prevent the screw 12 from coming off.

Next, a firing pin 10 is slidably inserted into the breech head 15 and is pushed rearward by a spring 20.
A ring 21 prevents removal.

In addition, a safety element 2 is provided at the front of the swing head 15 at right angles to the firing pin 10.
2 is provided so as to be slidable within the breech head 15 in a direction perpendicular to the firing pin 10.

As shown in FIG. 2, the safety element 22 has a large diameter portion 2 at the center.
3' and a small diameter part 23'' that communicates with this in the radial direction. 10
” is large enough to pass through.

Further, contact surfaces 22' and 22'' at both ends of the safety element 22 are in contact with cam surfaces 24 and 25 formed on the inner surface of the screw body 12, respectively.

Note that when the cam surfaces 24 and 25 of the molten body 12 are engaged with the threaded portion 13 of the screw 12 and the threaded portion 14 of the breech ring 3 (the state shown in FIGS. 1 and 2), The firing pin shaft portion 10' of the firing pin 10 can pass through the large diameter portion 23' of the hole 23 of the safety element 22 and move forward, and the threaded portion 13 of the screw body 12 and the threaded portion 14 of the breech ring 3 are engaged with each other. If it comes off (the state shown in FIG. 3), move the safety element 22 so that it is in a position where the stepped portion 26 of the firing pin 10 cannot pass through it. It is formed in such a shape that the safety element 22 can be moved by pushing it.

The present invention has the above-mentioned configuration, and its operation will be explained next.

First, in order to load the ammunition 27, the screw 12 is turned by a predetermined angle in the direction shown by arrow A in FIG. Remove the engagement.

In that case, the cam surfaces 24.25 formed on the screw 12 are in contact with the immediate surfaces 22', 22'' of the safety element 22, and the screw 12
As a result of the rotation, the cam surface 24 pushes the surface 22' to shift the safety element 22 downward in FIG. 26 is in contact with the safety element 22 as shown in FIG.
0 is restricted from advancing in the direction of the ammunition 27.

The chain door 6 is then rotated by about 100 DEG against the spring 7 to open the closing mechanism and held in that position by a separately provided limiter (not shown).

Next, when the loading of the ammunition 27 is completed, the limiter is removed and the chain door 6 is automatically rotated about 100' by the force of the spring 7 to close it, and then the screw 12 is moved to the arrow mark in FIG. The threaded portion 13 of the screw body 12 and the threaded portion 14 of the breech ring 3 are completely engaged by turning it by a predetermined angle in the direction shown by .

In that case, the inner cam surfaces 25 of the cam surfaces 24 and 25 formed on the screw 12 push the immediate surface 22'' of the safety element 22, and the safety element 2
2 is pushed upward in the figure to the state shown in FIGS. 1 and 2, and by moving the large diameter portion 23' of the hole 23 toward the axis, the firing pin 10 is moved into the large diameter portion 23' of the hole 23. It became possible to move forward through the
By striking the head of the firing pin 10 against the hammer 8,
The firing pin 10 protrudes without being restricted by the safety element 22 and fires the ammunition 27.

Since the present invention has the above-described structure and operation, the following effects can be obtained.

Since the safety element is automatically and reliably moved by the rotation of the screw to limit and release the firing pin protrusion, there is no possibility of erroneous operation that would result in manual operation.

In addition, the chain door is rotated and closed by the force of the spring after ammunition is loaded, but even if the chain door rotates too quickly, the movement of the firing pin is restricted by the safety element, so the thread is completely closed at the breech. Before engaging the ring, inertia prevents the firing pin from protruding and causing a burst.

Furthermore, since the hammer is structured so that it can be moved at any time, if it is moved before the threaded part of the breech ring and the threaded part of the screw body are engaged, the hammer will not be restricted by the safety element. It is expected that the firing pin will move and explode, but according to the present invention, that risk is completely eliminated.

As described above, according to the present invention, it is possible not only to obtain a closing machine for an internal control gun for a cartridge gun that can be operated safely without any danger of explosion due to incorrect operation or inertia, but also
This has the effect that the opening and closing operations of the sub-gun closing machine also enable training for opening and closing the closing machine of the cartridge gun itself.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of one embodiment of the present invention when the closing machine is in the closed state, Fig. 2 is a sectional view taken along line II-II in Fig. 1, and Fig. 3 is a threaded portion of the screw. II-II in Fig. 1 in a state in which the breech ring neck and the breech ring are disengaged.
FIG. 1... Submarining gun barrel, 2... Cartridge gun barrel, 3... Breech ring, 4... Ear part, 5...
...shaft, 6 ... chain door, 7 ... spring, 8 ... hammer, 9 ... shaft, 10.
...Firing pin, 11...Shaft, 12...
...Screw body, 13...Threaded part, 14...
Threaded portion, 15...Lead head, 16...Spring, 17...Nut, 18...Key, 1
9...For now, 20...Spring, 21...
...Ring, 22...Safety element, 22', 2
2"...for now, 23...hole, 23'...
...Large diameter hole, 23''...Small diameter hole, 2
4.25...Cam surface, 26...Step part,
27...Ammunition.

Claims (1)

[Scope of utility model registration request] In an internal control gun for a cartridge gun, a chain door 6 has a shaft portion 11 whose axis coincides with the off-axis, and a threaded portion 1 of a breech ring 3 on the outer periphery.
4, a screw 12 rotatably provided on the outer periphery of the shaft 11 of the chain door 6; a swivel head 15 slidably provided inside the shaft 11; A stepped firing pin 10 is located inside the head 15 and slides in the direction off the axis, and a threaded firing pin 10 is located at the front part of the breech head 15 and is slidable in the direction perpendicular to the axis.
The current surface 22 that is in contact with the cam surface 24.25 provided on the inner circumference of 2
22'' and a safety element 22 having a hole 23 consisting of a large-diameter hole 23' and a small-diameter hole 23'' through which the firing pin 10 passes and communicates in the center. Closing machine for internal reduction gun for cannon.