A hose pressing device for bending a hose portion, and an air gun having the hose pressing device

Abstract

To provide a hose pressing device for bending a hose part which does not hinder rearward movement of a nozzle while maintaining a diameter and a length of the hose part, and to provide an air gun having the hose pressing device.SOLUTION: A hose pressing device presses a hose part for sending compressed air generated by a cylinder device to a nozzle, which jets the compressed air, to bend the hose part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a hose pressing device for bending a hose portion that connects a piston cylinder device that generates compressed air and a nozzle that ejects the generated compressed air, and an air gun having the hose pressing device.

Background Art

[0002] Regarding so-called air guns, there is one that fires a bullet held in a cartridge disposed in a magazine by causing a hammer, pulling a trigger, ejecting compressed air from a nozzle into the magazine.

[0003] Such an air gun is disclosed, for example, in Utility Model Registration No. 3175969, "In a simulated gun that raises a hammer and locks it to a stopper, accumulates the spring of a piston cylinder device interlocked with the hammer, pulls a trigger to release the locking of the stopper, and generates compressed air by the piston cylinder device by releasing the accumulation of the spring, and fires a bullet with the compressed air. A cocking load reducing device characterized by using a non-linear spring as a spring acting on the operating member of the piston cylinder device in order to reduce the load when starting the cocking operation by raising the hammer."

[0004] In the above-mentioned invention, it is excellent as a device that exhibits the function as a cocking load reducing device. However, in an air gun having the above device, when pulling the hammer to perform a cocking operation, it is necessary to perform an operation of pulling the nozzle away from the magazine in order to allow the rotation of the magazine. In this case, the operation of the nozzle moving backward is solely performed by a spring. However, when pulling the hammer, although the hose portion connected to the nozzle must be bent, there is a problem that the backward movement of the nozzle is blocked by the elastic force for bending the hose portion.

[0005] In that case, it may be considered to reduce the elastic force by narrowing the diameter of the hose portion. However, the amount of compressed air reaching the nozzle may decrease, leading to a decrease in the speed of the bullet. On the other hand, it may be considered to increase the length of the hose portion to make it easier to bend. However, this may lead to a loss of the compression pressure of the compressed air.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0007] The present invention has been made paying attention to the above points, and the problem thereof is to provide a hose pressing device that bends a hose portion without preventing the nozzle from retracting while maintaining the diameter and length of the hose portion, and an air gun having the hose pressing device.

Means for Solving the Problems

[0008] In order to solve the above problems, the hose pressing device according to the first aspect presses a hose portion for sending the compressed air to a nozzle that injects the compressed air generated by a cylinder device.

[0009] Further, the hose pressing device according to the second aspect cocks the hammer, and when the nozzle that injects the compressed air generated by the cylinder device moves backward, presses the hose portion for sending the compressed air to the nozzle forward.

[0010] Further, the hose pressing device according to the third aspect has, in the second aspect, a hose roller portion that presses the hose portion and a hose spring that biases the hose roller portion forward, and when cocking the hammer, the hose roller portion presses the hose portion to bend it by the hose spring.

[0011] An air gun having a hose pressing device according to a fourth aspect has a hose pressing device that presses a hose portion for sending the compressed air generated by a cylinder device to a nozzle that injects the compressed air.

[0012] An air gun having a hose pressing device according to a fifth aspect has a hose pressing device that half-cocks a hammer and presses a hose portion for sending compressed air to a nozzle forward when the nozzle that injects the compressed air generated by a cylinder device moves backward.

[0013] An air gun having a hose pressing device according to a sixth aspect is an air gun having a hose pressing device according to the fifth aspect, wherein the hose pressing device has a hose roller portion that presses the hose portion and a hose spring that biases the hose roller portion forward, and when the hammer is half-cocked, the hose roller portion presses the hose portion to bend it by the hose spring.

Advantages of the Invention

[0014] Since the present invention is configured and operates as described above, it is possible to provide a hose pressing device that bends a hose portion without preventing the nozzle from retracting while maintaining the diameter and length of the hose portion, and an air gun having the hose pressing device.

Brief Description of the Drawings

[0015]

Figure 1

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Figure 8

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Figure 11

Best Mode for Carrying Out the Invention

[0016] Hereinafter, with reference to the illustrated embodiments, the hose pressing device 100 of the present embodiment and the air gun 500 of the present embodiment having the hose pressing device 100 will be described. The air gun 500 is preferably of a so-called revolver type. The barrel 501 is a passage through which the bullet B passes, and the cartridge chamber 502 can be loaded with a plurality of cartridges 520 (see FIG. 8) described later. Hereinafter, in the state of viewing from the side of the air gun 500, the direction from the piston cylinder device 550 to the muzzle 530 is referred to as the front F direction. Similarly, the direction from the muzzle 530 to the piston cylinder device 550 is referred to as the rear R direction.

[0017] The cartridge 520 is for loading the bullet B. The bullet B is held in a fixed position until firing in the state where the cartridge 520 is loaded in the cartridge chamber 502, and is fired from the muzzle 530 by the compressed air ejected from the nozzle 50. The bullet B is preferably a BB bullet.

[0018] A nozzle 50 is disposed on the rear R side of the cartridge chamber 502, and the nozzle 50 is connected to a piston cylinder device 550 by a hose portion 60 formed of a pipe described later. The piston cylinder device 550 is composed of a cylinder 560 and a piston 570 disposed at the lower part of the grip portion of the gun body. Further, the piston cylinder device 550 has a spring 580 for accumulating pressure on the piston 570, and the spring 580 is disposed inside the piston 570.

[0019] In this embodiment, the cylinder 560 is fixed to the gun body side, and the piston 570 is slidably disposed with respect to the cylinder 560 by the expansion and contraction force of the above-described spring 580. Further, the nozzle 50 further has a nozzle packing 51 in order to be in close contact with the cartridge 520 disposed in the cartridge chamber 502.

[0020] The hose portion 60 connects the nozzle 50 and the piston cylinder device 550, and is for sending the compressed air generated by the piston cylinder device 550 to the nozzle 50.

[0021] Further, the hose portion 60 is preferably made of a synthetic resin having flexibility. Even if it is made of a synthetic resin, it may have a certain degree of rigidity. For this reason, it has a hose pressing device 100 that presses the hose portion 60 in the forward F direction to so-called buckling. The hose pressing device 100 has a hose roller portion 110 that contacts the hose portion 60, and a hose spring 120 that presses the hose roller portion 110 from the rear R direction to the forward F direction. The hose roller portion 110 has a mortar shape and has flange portions 111, 111 in the shape of a flange and a roller portion 112 sandwiched between the flange portions 111, 111. The hose portion 60 is configured not to shift even when pressed by the flange portions 111, 111.

[0022] Also, the hose spring 120 is preferably a so-called torsion spring. Therefore, since the hose pressing device 100 biases the hose portion 60 to be pushed out in the forward F direction, it is arranged in the rearward R direction of the hose portion 60. One end of the hose spring 120, the spring one end portion 121, is connected to the center of the flange-shaped flange portion 111, and the other end, the spring other end portion 122, is in contact with the main body of the air gun 500. Thus, the hose spring 120 biases by pressing the hose roller portion 110 in the forward F direction and further pressing the hose portion 60 in contact with the hose roller portion 110 in the forward F direction.

[0023] Also, in this embodiment, the position where the hose pressing device 100 presses the hose portion 60 is preferably arranged at an intermediate point between the cylinder device 550 and the nozzle 50. This is because, at that position, when applying a pressing force that causes the hose portion 60 to bend, the force becomes relatively small.

[0024] When the hammer 20 is half-cocked as described later, when the nozzle 50 moves rearward, the hose portion 60 acts so as to be bent. The above-described hose pressing device 100 acts to assist that action. Thereby, in this embodiment, it is also possible to prevent the occurrence of a decrease in the speed of the bullet B due to a decrease in the amount of compressed air reaching the nozzle 50.

[0025] Also, the air gun 500 has a pressing device 10 that presses the cartridge 520 arranged in the cartridge chamber 502 by the full-cocking operation of the hammer 20. By having this pressing device 10, it is possible to prevent compressed air from leaking by bringing the nozzle 50 into close contact with the cartridge 520 arranged in the cartridge chamber 502.

[0026] Also, the air gun 500 has an inner frame 650 that constitutes a so-called inner skeleton, and the pressing device 10 is arranged on the inner frame 650.

[0027] The pressing device 10 includes a hammer part 30 that engages with the hammer 20, and a nozzle cam 40 that rotates by engaging with the hammer part 30. The hammer 20 is for performing a half-cocking or full-cocking operation as described later, and has a finger hook part 21 for a user (not shown) to place a finger on the hammer 20 and an engaging part 22 that engages with the hammer part 30. The hammer 20 is pivotally supported and attached to the air gun 500 by a rotating shaft part 25 so as to be rotatable relative to the air gun 500.

[0028] When the hammer 20 is fully cocked, by engaging with the hammer 20, the hammer part 30 rotates, and by engaging with the hammer part 30, the above-described nozzle cam 40 rotates, and as a result, the nozzle cam 40 presses the nozzle 50. In this way, by pressing the nozzle 50 against the cartridge 520 disposed in the magazine 502 by the pressing device 10, the nozzle 50 and the cartridge 520 disposed in the magazine 502 can be brought into close contact as described above, so that leakage of compressed air therefrom can be prevented. Further, since the hammer 20 presses the nozzle 50 against the cartridge 520 disposed in the magazine 502 by fully cocking the hammer 20, the tightness is not affected by the operation of pulling the trigger 700. Therefore, the operation of pulling the trigger 700 can be performed in substantially the same manner as that of a real gun.

[0029] Further, the hammer 20 has a connecting rod connection part 23. Literally, the connecting rod connection part 23 is connected to the connecting rod 80, and the connecting rod 80 is connected to the piston cylinder device 550. Specifically, the connecting rod 80 is connected to a piston connection part 571 that is a part of the piston 570. When the hammer 20 is pulled, the piston 570 is pushed down via the connecting rod 80 to accumulate the spring 580.

[0030] Further, the hammer 20 has a hammer rotating portion 24 that is circular in plan view, and the engaging portion 22 described above is disposed so as to protrude from the rotating portion 24. Further, both the finger-hooking portion 21 and the engaging portion 22 are disposed so as to protrude from the rotating portion 24. In a non-cocked state, the hammer part engaging receiving portion 32, which will be described later, is disposed near the one-end engaging portion 21a, and immediately before full cocking, the hammer part engaging receiving portion 32 engages with the engaging portion 22. Further, a rotating shaft portion 25 is provided at the center of the hammer rotating portion 24, and the rotating shaft portion 25 is pivotally supported so as to be rotatable when a cocking operation is performed on the hammer 20.

[0031] Further, the hammer 20 has a trigger first engaging portion 28 that engages with the trigger 700, and the trigger first engaging portion 28 has a stepped shape in which a substantially circular hammer rotating portion 24 in plan view is missing. Further, the hammer 20 has a trigger second engaging portion 29 that engages with the trigger 700, and the trigger second engaging portion 29 has a stepped shape in which a part of the substantially circular hammer rotating portion 24 in plan view is missing. Both the trigger first engaging portion 28 and the trigger second engaging portion 29 are provided as a part of the hammer rotating portion 24.

[0032] The hammer part 30 has a hammer part rotating portion 31 that is circular in shape and a hammer part engaging receiving portion 32 that protrudes from the hammer part rotating portion 31. The center portion of the hammer part rotating portion 31 is coaxially and rotatably pivotally supported by the center portion of the hammer rotating portion 24 and the rotating shaft portion 25.

[0033] The hammer part engaging receiving portion 32 literally engages with the engaging portion 22 described above. When the hammer 20 is cocked, the hammer rotating portion 24 rotates, and the engaging portion 22 rotates. When the engaging portion 22 engages with the hammer part engaging receiving portion 32, the hammer part engaging receiving portion 32 also rotates.

[0034] Further, the nozzle cam 40 has one end 41, the other end 42, and a rotating part 43 therebetween. The rotating part 43 is rotatably supported by a shaft part 600 attached to the air gun 500, and the one end 41 and the other end 42 are pivotally supported so as to be swingable like a seesaw. Further, the one end 41 presses the other end 42 in the direction of the muzzle 530 (front F direction) by engaging with the hammer part engaging receiving part 32.

[0035] Also, one end 41 of the nozzle cam 40 is biased by a nozzle cam spring 45 to rotate in the rearward R direction. As a result, the other end 42 connected to the nozzle 50 is biased to separate from the cartridge 520 disposed in the magazine part 502.

[0036] One end 41 of the nozzle cam 40 is arranged to engage with one end engaging part 21a arranged near the base of the finger hook part 21 of the hammer 20. In this way, the one end engaging part 21a presses the nozzle cam 40 slightly in the forward F direction so as to counteract the pressing force of the nozzle cam spring 45 by engaging with the one end 41 of the nozzle cam 40.

[0037] Also, as described above, the nozzle 50 is connected to a hollow hose part 60. The hose part 60 is connected to the cylinder 560 and is for sending the compressed air generated by the piston cylinder device 550 to the nozzle 50. As described above, the hose part 60 is preferably made of a synthetic resin having flexibility. The hose pressing device 100 for pressing the hose part 60 has already been described.

[0038] In FIGS. 6 to 11, a state where a user (not shown) pulls the hammer 20 will be described. Here, FIGS. 6 and 7 show the state before pulling the hammer, FIGS. 8 and 9 show the half-cocked state, and FIGS. 10 and 11 show the fully-cocked state. A user (not shown) starts to pull the hammer 20 in the air gun 500 with the above configuration. Before the user (not shown) pulls the hammer 20, the nozzle 50 is pressed against the cartridge 520 disposed in the magazine 502 by the pressing device 10. However, when the user (not shown) starts to pull the hammer 20, the engagement between the one-end engaging portion 21a and the one end portion 41 is released, the nozzle cam 40 rotates in the rearward R direction, the other end portion 42 of the nozzle cam 40 rotates and moves slightly in the rearward R direction, and thus the nozzle 50 connected to the other end portion 42 moves in the rearward R direction, creating a gap between the nozzle 50 and the cartridge 520 disposed in the magazine 502. This may be referred to as half-cocking.

[0039] Also, a user (not shown) starts to pull the hammer 20 in the air gun 500 with the above configuration and half-cocks it. As a result, the nozzle 50 begins to move slightly in the rearward R direction, and the hose pressing device 100 presses the hose portion 60 connected to the nozzle 50 to further bend it.

[0040] As described above, when the nozzle 50 starts to move in the rearward R direction by half-cocking, the hose portion 60 may inhibit the movement because it has elasticity. In this case, the hose roller portion 110 in the hose pressing device 100 is pressed from the rearward R direction to the forward F direction by the hose spring 120, and thus acts to bend the hose portion 60 from the rearward R direction to the forward F direction so as to counteract the elastic force of the hose portion 60, and is against the elastic force. Thereby, even if there is a hose portion 60 that does not exist in a real gun, the hose pressing device 100 acts to cancel the elastic force against the force trying to bend the hose portion, and can solve the problem that the rotation of the magazine is jammed by the non-receding nozzle.

[0041] To maintain this half-cocked state, the trigger 700 engages with the first trigger engaging portion 28 on the hammer 20. At this time, the connecting rod 80 connected to the hammer 20 presses down the piston 570 and accumulates the spring 580.

[0042] Next, a user (not shown) further pulls the hammer 20. As a result, the hammer rotating portion 24 rotates, and the engaging portion 22 rotates in the rearward R direction. When the engaging portion 22 engages with the hammer part engaging receiver 32, the hammer part engaging receiver 32 also rotates in the rearward R direction.

[0043] Due to the rotation of the hammer part engaging receiver 32, the hammer part engaging receiver 32 engages with one end 41 of the nozzle cam 40. As a result, the one end 41 rotates around the shaft portion 600 attached to the air gun 500, and the other end 42 moves in the forward F direction. Since the other end 42 is connected to the nozzle 50, the nozzle 50 is pressed against the cartridge 520 disposed in the magazine 502, and the nozzle 50 is in close contact with the cartridge 520 disposed in the magazine 502. In this way, the nozzle cam 40 presses the nozzle 50. At this time, the connecting rod 80 connected to the hammer 20 further presses down the piston 570 and accumulates the spring 580. In this case, the piston 570 is completely accumulated by the compressed spring 580 and is in a so-called full bottom state. This state may be referred to as full cocking.

[0044] In this full-cocked state, the rotation of the magazine 502 is fixed. Also, to maintain this full-cocked state, the trigger 700 disengages from the first trigger engaging portion 28 on the hammer 20 and engages with the second trigger engaging portion 29.

[0045] Next, when a user (not shown) pulls the trigger 700 in this fully cocked state, the engagement between the trigger 700 and the second trigger engagement portion 29 on the hammer 20 is released. At this time, as the compressed spring 580 returns to its natural length, the piston 570 is pushed up to generate compressed air. The generated compressed air is supplied to the nozzle 50 through the hose portion 60, and the compressed air is jetted onto the cartridge 520 disposed in the magazine 502 to fire the bullet B.

[0046] At this time, since the operation of pulling the trigger 700 only releases the engagement between the trigger 700 and the second trigger engagement portion 29 on the hammer 20, no extra force is applied, and the operation of pulling the trigger 700, which is the same as that of a real gun and has no recoil, can be realized. Thereby, it is possible to reduce as much as possible the risk that the aiming once determined will be displaced and the hitting accuracy will be reduced.

Explanation of Reference Numerals

[0047] 20 Hammer 22 Engagement Portion 23 Connecting Rod Connection Portion 24 Hammer Rotation Portion 30 Hammer Parts 40 Nozzle Cam 41 One End Portion 42 The Other End Portion 43 Rotation Portion 50 Nozzle 51 Nozzle Packing 60 Hose Portion 80 Connecting Rod 100 Hose Pressing Device 110 Hose Roller Portion 120 Hose Spring 500 Air Gun 501 Barrel 502 Magazine 520 Cartridge 530 Muzzle 550 Piston Cylinder Device 560 Cylinder 570 Piston 580 Spring 650 Inner Frame 700 Trigger B Bullet

Claims

1. A hose pressing device for use in an air gun having a hose portion, which presses the hose portion forward to supply compressed air to a nozzle when the nozzle for injecting compressed air generated by a cylinder device moves rearward while the hammer is half-cocked.

2. The hose pressing device includes a hose roller portion that presses the hose portion, and a hose spring that biases the hose roller portion forward. The hose pressing device according to claim 1, wherein when the hammer is half-cocked, the hose roller portion presses the hose portion to bend it by the hose spring.

3. An air gun having a hose pressing device that presses the hose portion for supplying compressed air to a nozzle forward when the nozzle for injecting compressed air generated by a cylinder device moves rearward while the hammer is half-cocked.

4. The hose pressing device includes a hose roller portion that presses the hose portion, and a hose spring that biases the hose roller portion forward. The air gun according to claim 3, having the hose pressing device, wherein when the hammer is half-cocked, the hose roller portion presses the hose portion to bend it by the hose spring.

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