JPH05706Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a bullet feed booster that feeds bullets into machine guns, cannons, etc.

Prior Art Machine guns, cannons, etc. (hereinafter referred to as "machine guns") are constructed in such a way that a force for drawing in the bullets is generated by the recoil of the bullets, the pressure of the firing gas, etc. By facing a series of connected bullets, it is possible to automatically feed bullets into the bullet loading port and fire continuously.

However, if you simply place the bullet train facing the bullet loading port, the bullet retraction force generated by the machine gun will pull the bullet train, increasing the machine gun's bullet retraction resistance. Therefore, smooth continuous shooting may not be possible.

Therefore, in the past, a bullet feed booster was installed to feed a train of bullets into the machine gun's bullet loading port using external power, thereby reducing the bullet retraction resistance of the machine gun and allowing normal continuous firing. .

However, conventional bullet feed boosters use a drive motor to drive the feed shaft, fix a feed gear that meshes with the bullets on this feed shaft, and rotate the feed gear to apply feeding force to the train of bullets, thereby creating a flexible system. Since the bullet train is fed into the machine gun's bullet loading port along the ute, the machine gun's bullet retraction speed and the bullet feed speed of the bullet feed booster cannot be synchronized, so the link in the flexible chute is required.・There is a problem where bullet jams such as bullet jams or broken links occur, making it impossible to shoot normally continuously.

In other words, as shown in the table in Figure 1, the bullet retraction force of a machine gun is generated intermittently, that is, every time a bullet is fired, and the bullet retraction speed varies with time. Therefore, if the bullet train feed speed (bullet train drive speed) of the bullet feed booster is set to the maximum bullet retraction speed A, the bullet train will be fed too far when the bullet retraction force is not being generated, resulting in link and bullet jamming.

Furthermore, if the bullet train feed speed is set to the time average value B of the bullet retraction speed, in the diagonally shaded portion where the bullet retraction speed is higher than that, the bullet train will act as a bullet retraction resistance of the machine gun, causing link breakage.

Purpose of the invention The purpose is to prevent bullets from clogging or link breakage from occurring even if the machine gun's bullet retraction speed and bullet train feed speed are not synchronized.

Structure of the device A feed gear that connects the bullet loading port 2 of the machine gun 1 and the outlet 4 of the bullet box 3 with a flexible chute 5, and engages the bullet row 8 in the bullet box 3 with the bullet 6 of the bullet row 8. 11
In the feed booster configured to feed bullets to the loading port 2 through the flexible chute 5 by a feed mechanism 9 equipped with A bullet feeding booster having a structure in which the one-way clutch 16 transmits the power of the drive motor 15 to the feed gear 11, but does not transmit power from the feed gear 11 to the drive motor 15.

Embodiment FIG. 2 is an overall perspective view of a bullet feed booster, in which a flexible chute 5 is connected between the bullet loading port 2 of the machine gun 1 and the outlet 4 of the bullet box 3.

As shown in FIG. 3, a bullet train 8 in which bullets 6 are connected in a row by links 7 is stored in the bullet box 3, and the bullet train 8 is delivered from the outlet 4 to the flexible shoot 5 by a feeding mechanism 9. It is sent to the bullet loading port 2 through the.

The feed mechanism 9 has a feed shaft 10 rotatably provided between both side walls 3a, 3a of the bullet box 3.
A feed gear 11 that meshes with the bullets 6 of the bullet train 8 and serves as a bullet train feeding means is provided, and the feed shaft 10 is connected to a drive motor 15 via a pulley 12, a belt 13, and a pulley 14. The rotation rotates the feed gear 11 and feeds the train of bullets 8 along the flexible chute 5 to the bullet loading port 2.

The pulley 12 is attached to the feed shaft 10 via a one-way clutch 16, as shown in FIG.
The one-way clutch 16 can rotate the feed shaft 10 in the bullet train feeding direction by the pulley 12, and
The feed shaft 10 has a structure that allows it to rotate freely in the bullet train feeding direction with respect to the pulley 12.

The bullet train feed speed of the feed gear 11 is set to the time average value B of the bullet retraction speed of the machine gun.

Therefore, the bullet train 8 is the feed gear 1 of the bullet feed booster.
1, the bullet train 8 is fed toward the bullet loading port 2, so when the bullet retraction speed of the machine gun 1 is slower than the bullet train feed speed of the bullet feed booster, the bullet train 8 is sent to the bullet loading port 2 by the feed gear 11, It is possible to reduce the bullet array 8 from acting as bullet retraction resistance and prevent bullet/link jamming.

Further, when the bullet retraction speed of the machine gun 1 is faster than the bullet train feeding speed of the bullet feed booster, the feed shaft 10 freely rotates in the bullet train feeding direction with respect to the pulley 12 by the one-way clutch 16, and the feed gear 11, that is, the bullet feed booster does not interfere with the bullet retraction of the machine gun 1, so no link breakage occurs.

Therefore, normal continuous firing can be performed without bullet/link jamming or link breakage.

Effects of the invention When the bullet retraction speed of the machine gun 1 is slower than the bullet train feed speed, the feed gear 11 of the feed mechanism 9 feeds the bullet train 8, and when the bullet retraction speed of the machine gun 1 is faster than the bullet train feed speed, the bullet train 8 is fed. Since the feed gear 11 idles relative to the drive motor 15 by the train 8, no unreasonable force is applied to the bullet train 8, so even if the bullet retraction speed of the machine gun 1 and the bullet train feed speed are not synchronized, the bullets Since bullets can be continuously fed into the bullet loading port 2 of the machine gun 1 without link jamming or link breakage, normal continuous firing can be performed.

Further, since only the one-way clutch 16 is provided between the feed gear 11 of the feed mechanism 9 and the drive motor 15, the structure is simple.

[Brief explanation of the drawing]

Fig. 1 is a table showing the relationship between the bullet retraction speed of a machine gun and the bullet feed speed of the bullet feed booster, Figure 2 and subsequent figures show embodiments of the present invention, and Figure 2 is an overall perspective view of the bullet feed booster. , FIG. 3 is a front view of the bullet train, and FIG. 4 is a detailed cross-sectional view of the feeding mechanism. 1 is a machine gun, 2 is a bullet loading port, 3 is a bullet box, 4 is an outlet, 5 is a flexible chute, 8 is a bullet train, 9 is a feeding mechanism, 11 is a bullet train feeding means, 15 is a motor,
16 is a one-way clutch.

Claims (1)

[Scope of utility model registration request] A feed gear 11 connects the bullet loading port 2 of the machine gun 1 and the outlet 4 of the bullet box 3 with a flexible chute 5, and engages the bullet row 8 in the bullet box 3 with the bullet 6 of the bullet row 8.
In the feed booster configured to feed bullets to the loading port 2 through the flexible chute 5 by a feed mechanism 9 equipped with The one-way clutch 16 transmits the power of the drive motor 15 to the feed gear 11, but does not transmit power from the feed gear 11 to the drive motor 15. Bullet booster.