JPH0253719B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention freely switches the number of bullets fired from semi-auto (single shot) to burst (single shot) to full auto (repeated shot) according to the tilted position of the selector lever. This relates to a gas gun that uses gas pressure to fire bullets.

[Conventional technology]

There are various types of guns that fire bullets using gas pressure. an inner cylinder that can be moved to
A strong spring that retracts the inner cylinder, a bullet loading member that guides the bullets one by one into the engine section, a weak spring that advances the bullet loading member in the axial direction, and a space between the front end of the bullet loading member and the rear end of the inner cylinder. O with elasticity interposed in
It includes a ring, a stepped part provided in a part of the engine part, and a passage for introducing gas into the inside of the engine part, and the O-ring is advanced to the stepped part by a bullet receiving gas pressure and expands its diameter. He has already applied for a patent for a fully automatic gas gun that allows bullets to pass through an O-ring before being fired. However, although this gas gun had a continuous firing function, it was not possible to freely switch the number of bullets fired from semi-auto to burst to full auto.

[Problem that the invention seeks to solve]

The present invention was proposed in view of the above-mentioned drawbacks of gas guns, and it is possible to freely switch the number of bullets fired from semi-auto to burst to full-auto with a single touch, making it especially suitable for use in play and training. The plan is to provide gas guns.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a gas gun in which a bullet is fired through an O-ring, and a valve that opens and closes the passage by vertical movement, which is provided in the middle of the gas introduction passage. , a trigger that is pivoted in the center and whose shoulder is pressed down by a spring, and a rear part that slides between the lower end of the valve and the shoulder of the trigger, and a front part that is pivoted via a shaft and has multiple upper and lower parts. A sear that has a latch and is retracted by a spring, an engagement piece that is attached to the inner cylinder and comes into contact with the front end of the engine section and slides up and down to engage with the top latch of the sear, and one side that is moved by a spring. is engaged with the lower latch of the sear, and the other side is in contact with the tip of the trigger, and the rocking member presses the rear end of the sear to tilt it, select the number of bullets to be fired depending on the tilt position, and set the safe position. The gas gun is characterized in that it is provided with a selector lever that locks the trigger when the gun is in the fully automatic position, and a rod that releases the engagement between the rocking member and the lower surface of the latch of the sear when the gun is in the full auto position.

[Effect]

Since the gas gun of the present invention is constructed as described above, when the selector lever is tilted to the safe position, the trigger is locked and cannot be fired.
Conversely, when the selector lever is tilted to the full auto position, the rod releases the engagement between the rocking member and the bottom surface of the sear's latch, allowing the sear to move freely back and forth, and the bullet continues to fire as long as the trigger is pulled. It will be launched in Also, when the selector lever is in the safe position and full auto position,
The sear moves according to the tilted position of the selector lever, and the engagement position with the engaging piece and the latch of the swinging member changes, so it is possible to switch between semi-auto and berth depending on the number of latches, and pull the trigger. The valve is pushed up through the sear and the bullet is fired.

〔Example〕

Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.

FIG. 1 is a sectional view showing the internal structure of a gas gun according to an embodiment of the present invention, FIG. 2 is a side view of the selector lever, and FIG. 3 is a perspective view showing the sear, trigger, and valve taken out. FIG. 4 is a perspective view showing how the engagement piece is attached to the inner cylinder.

In the figure, 1 is the barrel of a gas gun that uses gas pressure, 2 is the engine part connected to the gun barrel 1, and from the gun barrel 1 to the engine part 2, an inner cylinder 3 is inserted into the inside of the gun barrel so that it can move in the axial direction. ing. Reference numeral 4 denotes an elastic O-ring movably positioned at the rear end of the inner cylinder 3, and a bullet loading member 5 is further inserted behind the O-ring so as to be movable in the axial direction inside the engine section 2. Note that 6 is a weak spring that moves the bullet loading member 5 forward. 7 is a strong spring that moves the inner cylinder 3 backward; the inner cylinder 3 moves backward against the spring 6 until the locking piece 8 attached to the inner cylinder 3 comes into contact with the front end surface of the engine section 2, and the O-ring 4 It is held and stopped between the inner cylinder 3 and the bullet loading member 5. Reference numeral 9 denotes a magazine for supplying bullets 10, through a magazine attachment port 11 provided in the engine section 2.
The bullet 10 is a bullet loading member 5 whose upper surface is partially open.
The O-rings 4 are supplied one at a time, and are opposed to the O-ring 4. The inner diameter of the O-ring 4 is smaller than the outer diameter of the bullet 10, but when the inner cylinder 3 moves forward and the O-ring 4 reaches the large-diameter step 12 provided in the engine section 2, the O-ring 4 has elasticity. Therefore, bullet 1
When 0 is pressed, the pressure expands the diameter to the same diameter as the bullet 10, allowing the bullet 10 to pass through. Note that when the O-ring 4 advances to the stepped portion 12, the bullet loading member 5 is advanced by the spring 6, so the magazine attachment port 11 is closed by the advanced bullet loading member 5, and airtightness is maintained. It turns out.

Reference numeral 13 denotes a passage for introducing gas G into the interior of the engine section 2. A valve 15 is provided in the middle of the passage to open and close the passage 13 by moving up and down against a spring 14. Nozzle 16
moves to the right against the spring 17, gas G is guided into the engine section 2 through the valve 15, and when the valve 15 descends, the nozzle 16 is pushed by the spring 17 and moves to the left, causing the passage 13 to move to the right. is becoming blocked. Reference numeral 18 denotes a trigger whose center portion is pivotally supported by a shaft 19, and a shoulder portion 21 is pressed down by a spring 20. When the trigger 18 is pulled,
The shoulder portion 21 is designed to rise. Note that a lock groove 22 is provided at the rear of the trigger 18. 23 has a rear portion that slides between the lower end of the valve 15 and the shoulder 22 of the trigger 18;
The shear 23 has a plurality of upper and lower latches 25a and 25b on the upper and lower front parts which are pivotally supported via a shaft 24, and the shear 23 is constantly pressed in the backward direction by a spring 26. The engagement piece 8 that is attached to the inner cylinder 3 and comes into contact with the distal end surface of the engine section 2 is
Although it cannot move in the axial direction relative to the inner cylinder 3,
The lower end of the engaging piece 8 is engaged with the latch 25a on the upper surface of the sear 23. Reference numeral 27 denotes a swinging member whose one side engages with the lower latch 25b of the sear 23 by a spring 28 and whose other side comes into contact with the tip 29 of the trigger 18, and is pivotally supported by a shaft 30. In addition, Sea Air 23
The lower surface latch 25b is provided one pitch at a time backward from the upper surface latch 25a. 31 pushes the rear end of the sear 23 and tilts, tilting position A,
This is a selector lever that selects the number of bullets to be fired using B, C, D, and E. In addition, selector lever 3
1 is the selector lever 3 when it is in the safe position A.
A protrusion 32 provided on the trigger 18 engages with a locking groove 22 provided on the trigger 18 to completely lock the trigger 18, and is pivotally supported by a shaft 33. Reference numeral 34 serves to pull down the tip of the swinging member 27 against the spring 28 when the selector lever 31 is set to the full auto position E, thereby releasing the engagement between the swinging member 27 and the lower surface of the latch 25 of the sear 23. It is a rod that fulfills its purpose.

Next, the operation of the gas gun of the present invention having the above configuration will be explained.

Now, when the selector lever 31 is set to the safe position A, the protrusion 3 on the inside of the selector lever 31
2 just engages with the lock groove 22 provided in the trigger 18, so the trigger 18 can no longer be pulled. Next, as shown in Fig. 7A, selector lever 3
1 to semi-auto (single shot) position B and trigger 1
When 8 is pulled, the valve 15 is pushed up using the shear 23 as a spacer, and the nozzle 16 is moved back to the right, as shown in FIG.
5 into the engine section 2, and pushes the bullet 10. Then, as shown in Fig. 7C, the inner cylinder 3
moves forward and when the O-ring 4 reaches the stepped portion 12, the inner diameter of the O-ring 4 becomes wider, and the bullet 10, which had been pressed by the gas G, passes through the O-ring 4 and is fired. In this case, the rear end 50 of the sear 23 is in the position before firing, but as the inner cylinder 3 moves forward, the locking piece 8 attached to the inner cylinder 3 engages with the upper latch 25a and moves the sear 23 forward. When pushed, the rear end 50 also moves forward. Three stages of upper surface latches 25a and lower surface latches 25b are formed in the front part of the sear 23, but as the sear 23 moves forward, the rear end 50 moves forward, and among the three stages of lower surface latches 25b, the rear end 50 moves forward. Locking piece 8 on the latch at the rear end
will be locked. In other words, the sear 23 pushed forward when the bullet 10 is fired is locked by the swinging member 27 that engages with the lower latch 25b and cannot retreat, until the lower end of the valve 15 and the shoulder 21 of the trigger 18 As the shear 23 that was sandwiched between them moves forward and comes out, a gap is created between the lower end of the valve 15 and the shoulder 21 of the trigger 18, and the valve 15 is pushed down by the force of the spring 14, and the nozzle 16 moves back forward, the passage 13 is closed, and the inflow of gas G is blocked. On the other hand, when the trigger 18 is released, the rear end of the swinging member 27 is pushed up by the tip 29 of the trigger 18, and the engagement with the bottom latch 25b of the sear 23 is released. A spring 2 is inserted into the gap between the shoulder 21 of the trigger 18 and the shoulder 21 of the trigger 18.
6, it will be retreated. Therefore, in this state, each time the trigger 18 is pulled, a single bullet 10 is fired, making semi-automatic operation possible.

Next, as shown in FIG. 8, when the selector lever 31 is set to the burst (two shots) position C, the rear end of the sear 23 comes to the position, so the sear 23 moves forward twice by the locking piece 8, that is, the bullet 10 After two shots have been fired, the valve 15 is pushed down to block the flow of gas G in the same manner as in the case of a semi-auto, and the burst (two shots) firing ends.

Next, burst selector lever 31 (3 shots)
When set to position D (that is, the position shown in Figure 1), the rear end of the sear 23 comes to the position as shown in the figure, so the sear 23 is advanced three times by the engaging piece 8, that is, the bullet 10 is fired three times. After firing, the valve 15 is pushed down to block the flow of gas G in the same manner as in the case of semi-auto, and the burst (3 shots) firing is completed.

Next, as shown in FIG. 9, when the selector lever 31 is moved to the full auto (repeat) position E, the rod 34 directly connected to the selector lever 31 causes the swinging member 2 to move.
7 is pulled, and the engagement between the swinging member 27 and the lower latch 25b of the sear 23 is released, allowing the sear 23 to move forward and backward. On the other hand, since the sear 23 is sandwiched between the lower end of the valve 15 and the shoulder 21 of the trigger 18, there is no gap between the lower end of the valve 15 and the shoulder 21 of the trigger 18.
5 is gradually pushed up and the gas G is constantly guided into the engine section 2 through the passage, so the bullets 10 are fired one after another, and can be stopped by returning the trigger 18 to its original position. do.

Next, a method for supplying gas G to this gas gun will be explained. Freon gas is generally used as the firing pressure source for gas G for gas guns, and a low pressure cylinder of about 5 to 6 atmospheres is usually used. However, even if the gas pressure is initially strong, the heat of vaporization lowers the temperature of the cylinder, which weakens the vaporization and lowers the gas pressure, which can change the trajectory and impair accuracy. FIG. 5 shows an embodiment in which an air accumulator 36 is connected to a gas cylinder 35, and after pressure is once stored in the air accumulator 36, gas is supplied to the gas gun. Figure 6 shows the inside of the gun stock 37 in the air storage chamber 3.
8, and the gas cylinder 3 is attached to the bottom of the stock 37.
9 can be set by screwing. When the gun stock 37 is used as the gas storage chamber 38 in this way, the gas in the gas cylinder 39 can be introduced into the gas storage chamber 38 and the pressure can be accumulated, making it possible to utilize high-pressure gas to a large extent. . Further, by using the gas storage chamber 38, it becomes possible to use a small gas cylinder 39. Further, since the direction, height, distance, etc. of the gas ejection port 40 from the gas cylinder 39 and the gas outlet port 41 from the gas storage chamber 38 can be greatly changed, the raw gas in the gas cylinder 39 can be directly supplied to the gas outlet port 41. They will not be led to the engine department. In addition, the gas injected from the gas cylinder 39 into the gas storage chamber 38 hits the wall surface inside the gas storage chamber 38 and rapidly changes direction, promoting mixture vaporization, so that all the gas in the cylinder is efficiently used. This is extremely convenient as it will be well vaporized.

〔Effect of the invention〕

As specifically explained above, according to the gas gun of the present invention, the number of bullets fired can be freely switched from semi-auto to burst to full auto with a single touch by simply changing the inclination position of the selector lever. Also, the trigger is securely locked in the safe position, so it is safe. In addition, each part automatically returns to its original position due to spring pressure, so it has many advantages such as reliable operation and easy handling.The structure is also relatively simple and can be manufactured at low cost, making it especially suitable for play. This makes it possible to provide a gas gun that is most suitable for use in commercial and training purposes.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing the internal structure of a gas gun according to an embodiment of the present invention, Fig. 2 is a side view of the selector lever, Fig. 3 is a perspective view showing the sear, trigger, and valve taken out. FIG. 4 is a perspective view showing how the locking piece is attached to the inner cylinder, FIG. 5 is a side view showing the connection between the gas cylinder and the storage chamber, and FIG. 6 is a sectional view showing the inside of the gun stock. In addition, Figures 7A, B, and C are cross-sectional views of the main parts showing the state of the main parts during semi-auto firing, and Figure 8 is a two-shot burst,
FIG. 9 is a sectional view of the main parts during full automatic firing. 1... Barrel, 2... Engine section, 3... Inner cylinder, 4...
...O-ring, 5... Bullet loading member, 6... Spring,
7... Spring, 8... Locking piece, 9... Magazine, 1
0... Bullet, 11... Magazine attachment port, 12... Step, 13... Passage, 14... Spring, 15... Valve, 16... Nozzle, 17... Spring, 18... Trigger, 19... ...shaft, 20 ... spring, 21 ... shoulder, 22 ... lock groove, 23 ... sear, 24
...Shaft, 25a...Top latch, 25b...Bottom latch, 26...Spring, 27...Swinging member, 28
... Spring, 29 ... Tip, 30 ... Shaft, 31 ...
...Selector lever, 32...Protrusion, 33...
Shaft, 34... Rod, 35... Gas cylinder, 36
...Air storage device, 37...Buttstock, 38...Air storage chamber, 3
9...Gas cylinder, 40...Ejection port, 41...Outlet port, 50...Sear rear end.

Claims (1)

[Claims] 1. A gas gun that fires bullets using gas pressure has an inner cylinder that can be moved in the axial direction from the barrel to the engine part, and a strong spring that moves the inner cylinder back.
a bullet loading member that guides the bullets one by one into the engine section;
a weak spring that advances the bullet loading member in the axial direction;
An elastic O-ring interposed between the front end of the bullet loading member and the rear end of the inner cylinder, a stepped portion provided in a part of the engine section, and a passageway for introducing gas into the inside of the engine section. In a gas gun, the O-ring is propelled by a bullet receiving gas pressure to a stepped portion and enlarges its diameter, so that the bullet passes through the O-ring and is fired. There is a valve that opens and closes a passage by vertical movement, a trigger that is pivoted in the center and whose shoulder is pushed down by a spring, and a rear part that slides between the lower end of the valve and the shoulder of the trigger and rotates the shaft. The sear has multiple latches at the top and bottom of the front part that are pivoted through the latches, and is retracted by a spring, and the upper latch of the sear that is attached to the inner cylinder and abuts the front end of the engine section and slides up and down. One side engages with the lower latch of the sear by means of a spring,
a swinging member, the other of which is in contact with the tip of the trigger; a selector lever that tilts by pushing the rear end of the sear, selects the number of bullets to be fired depending on the tilted position, and locks the trigger in the safe position;
A gas gun characterized by being provided with a rod that releases the engagement between the swinging member and the bottom surface of the sear latch when the selector lever is set to the full auto position.