WO2019092820A1

WO2019092820A1 - Friction reduction device to reduce friction between piston and cylinder in gas-type replica guns

Info

Publication number: WO2019092820A1
Application number: PCT/JP2017/040318
Authority: WO
Inventors: 巌岩澤
Original assignee: 株式会社東京マルイ
Priority date: 2017-11-08
Filing date: 2017-11-08
Publication date: 2019-05-16
Also published as: EP3708943A1; TW201918685A; EP3708943A4; TWI795459B; JP7006965B2; JPWO2019092820A1

Abstract

[Problem] To provide a friction reduction device to reduce friction between a piston and a cylinder. [Solution] A friction reduction device to reduce friction between a piston and a cylinder has a piston into which a gas flows and that retracts in order to load the next bullet, a cylinder that accommodates the piston so same can move, and a piston rolling body that is rotatably disposed in the piston. The piston rolling body is rotated by the piston rolling body rotatably disposed in the piston being in contact with the interior of the cylinder when the piston is retracting.

Description

Friction reduction device to reduce friction between piston and cylinder in gas simulant gun

The present invention relates to a friction reducing device for reducing friction between a piston and a cylinder in a gas simulated gun.

In a conventional simulated gun, there is a so-called gas gun which fires a bullet by filling a cylinder body with compressed gas into the gun body and injecting it into the bullet. In addition, there is a so-called blowback for moving the slide backward so as to load the next bullet with the firing of the bullet in order to make a motion resembling a real gun.

For example, according to Japanese Patent Application Laid-Open No. 2014-240722, in a play-back blowback gas gun, when sliding the inside of a cylinder in a state where the piston is fixed to a slide, A blowback gas gun is disclosed that prevents the leakage of compressed gas and allows the blowback retraction operation to be performed quickly. This is in a playback blow gas gun in which the piston fixed to the slide is retracted along the inner circumference of the cylinder by the pressure of compressed gas supplied into the cylinder in front of the piston when firing a projectile. A shaft is projected at the front end of the piston housed with clearance on the inner periphery of the cylinder, and a collar is mounted on the outer periphery of the shaft, and an elastic piston is mounted in an annular groove formed on the outer periphery of the collar. A piston packing that slides in the cylinder by allowing the collar to move in the circumferential direction by a clearance around the shaft by fitting the packing and further connecting the piston head to the front end of the shaft of the piston. The axis of the shaft coincides with the axis of the cylinder.

However, in the above-described invention, leakage of compressed gas is prevented rather than preventing so-called misalignment which makes the gap between the cylinder and the piston appropriate. Therefore, these displacements can not be prevented, and friction is generated between the piston moving backward to load the next bullet and the cylinder in contact with that piston, particularly in a gas-type simulated gun over many years of use, The cylinder may wear out. In particular, this is because the cylinder is made of synthetic resin.

JP, 2014-240722, A

The present invention has been made in view of the above situation, and its object is to reduce the friction between a piston and a cylinder.

The friction reducing device for reducing the friction between the piston and the cylinder according to the first aspect of the present invention comprises a piston which receives gas and retracts to load the next bullet, a cylinder which movably stores the piston, and the piston And a piston rolling element rotatably disposed, and when the piston moves backward, the piston rolling element rotatably disposed on the piston contacts the inside of the cylinder, whereby the piston rolling element Will rotate.

The friction reducing device for reducing friction between a piston and a cylinder according to the second aspect of the present invention is characterized in that, in the first aspect, the piston rolling elements are disposed at both ends of a horizontally disposed rotatable axle portion And a wheel portion.

In a friction reducing device for reducing friction between a piston and a cylinder according to a third aspect of the present invention, in the first aspect, the piston rolling elements are arranged horizontally and a second axle part as an axis and a second axle part And a second axle portion disposed at the center of the second wheel portion.

The friction reducing device for reducing friction between the piston and the cylinder in the fourth aspect comprises: a piston which moves in for a gas to move backward to move the next bullet; and a slider integrally connected to the piston; A cylinder having a piston movably accommodated therein and a slider rolling element rotatably disposed on the slider, wherein the piston moves backward and the slider integrally coupled to the piston moves backward. The slider rolling element rotatably disposed on the slider contacts the outside of the cylinder, thereby reducing friction between a piston and a cylinder integrally coupled to the slider while the slider rolling body rotates. It is said that.

The friction reducing device for reducing friction between the piston and the cylinder according to the fifth aspect of the present invention is characterized in that, in the fourth aspect, the slider rolling element is disposed at both ends of the rotatable slider axle portion disposed in the horizontal direction And a slider wheel portion.

A friction reducing device for reducing friction between a piston and a cylinder according to a sixth aspect of the present invention is the fourth aspect according to the present invention, wherein the slider rolling element is disposed horizontally and serves as an axis a second slider axle portion and a second slider And a second slider wheel portion disposed at an axle portion, and a second slider axle portion serving as an axis of the second slider wheel portion is disposed at the center of the second slider wheel portion.

According to a seventh aspect of the present invention, there is provided a blowout gas simulated gun including the friction reducing device for reducing friction between a piston and a cylinder according to the first to third aspects.

A blowout gas simulated gun according to an eighth aspect comprises the pistons of the fourth to sixth aspects and a friction reducing device for reducing friction between the cylinder and the piston.

A blowout gas simulated gun according to a ninth aspect includes the friction reducing device for reducing friction between the piston of the first aspect to the third aspect, the cylinder, the piston of the fourth aspect to the sixth aspect, and the cylinder And a friction reducing device for reducing friction between the two.

Since the present invention is configured and operates as described above, the friction between the piston and the cylinder can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The whole sectional view of the gas type simulation gun which has a friction reduction device in a 1st example. A is the elements on larger scale of the gas type simulation gun which has a friction reduction device in a 1st example. B is a 2B line partial cross-sectional view of A. A is a general sectional view of a gas simulated gun having a friction reducing device in a first embodiment in which a bullet moves in a barrel. B is an enlarged sectional view of the friction reducing device in the first embodiment in the state of A. FIG. A is a general sectional view of a gas simulated gun having a friction reducing device in a first embodiment with a projectile fired. B is an enlarged sectional view of the friction reducing device in the first embodiment in the state of A. FIG. A is an overall cross-sectional view of a gas simulated gun having a friction reducing device in the first embodiment with the projectile fired and the piston moved backward. B is an enlarged sectional view of the friction reducing device in the first embodiment in the state of A. FIG. A is a general sectional view of a gas simulated gun having a friction reducing device in the first embodiment in which the next bullet is placed. B is an enlarged sectional view of the friction reducing device in the first embodiment in the state of A. FIG. A is a partial enlarged view of a gas type simulated gun having a friction reducing device in a second embodiment. B is a 7B line partial cross-sectional view of A. A is the elements on larger scale of the gas simulation gun which has a friction reduction device in a 3rd example. B is a 8B line partial cross-sectional view of A. A is an overall sectional view of a gas simulated gun having a friction reducing device in a third embodiment in which a bullet moves in a barrel. B is an enlarged sectional view of the friction reducing device of the third embodiment in the state of A. FIG. A is a general sectional view of a gas simulated gun having a friction reducing device in a third embodiment with a projectile fired. B is an enlarged sectional view of the friction reducing device of the third embodiment in the state of A. FIG. A is an overall sectional view of a gas simulated gun having a friction reducing device according to a third embodiment of the present invention in which the projectile is fired and the piston is moved rearward. B is an enlarged sectional view of the friction reducing device of the third embodiment in the state of A. FIG. A is a general sectional view of a gas simulated gun having a friction reducing device in a third embodiment in a state where the next bullet is disposed. B is an expanded sectional view of a friction reducing device of three examples in a state of A. FIG. A is a partial enlarged view of a gas type simulated gun having a friction reducing device in a fourth embodiment. B is a partial cross-sectional view taken along line 13B of A.

The friction reducing device in the first example will be described below with reference to the illustrated embodiment. The friction reducing device 10A in the first embodiment is disposed in the blow-back gas simulation gun 100, and the piston 20 moves in a direction in which compressed gas flows in and retracts to load the next bullet. It has the cylinder 30 which accommodates the piston 20 movably, and the piston rolling element 40 rotatably arrange | positioned at the piston 20. As shown in FIG. The rotation of the piston rolling element 40 is intended to reduce the friction between the piston 20 and the cylinder 30, thereby reducing the wear of the cylinder 30. That is, when the magazine having the bullet B is loaded on the gas simulation gun 100, the cylinder 30 is pressed upward, but the piston 20 is not pressed, so the lower portion 20a of the piston 20 relatively approaches the cylinder 30, There is a problem that the gap between the piston 20 and the cylinder 30 is narrowed, but having the piston rolling element 40 makes the gap between the piston 20 and the cylinder 30 appropriate, so-called misalignment between the piston 20 and the cylinder 30 The solution is also to reduce the friction between the piston 20 and the cylinder 30 and thereby reduce the wear of the cylinder 30, as described above. Here, the blowback is to automatically load a bullet B1 to be fired next to the fired bullet B and is an operation performed in a real gun. Also in the gas type simulated gun 100, the real gun and its configuration are different from each other in appearance, and the effect of mounting the next bullet, which is a bullet to be fired next, is simulated.

Here, the gas simulated gun 100 is a simulated gun called a so-called gas gun, which fires a bullet B from the muzzle 110 by releasing a so-called compressed gas, which will be described in detail later.

The friction reducing device 10A will be described. The piston 20 is disposed in the cylinder 30 so as to be able to move backward (meaning to move to the right in FIG. 1) in response to the pressure of compressed gas as described later. Further, the piston 20 has a piston body 21, a resiliently arranged piston packing 22 which is arranged at the tip thereof and has a ring shape, and a screw portion 23 fixing the piston packing 22 to the piston body 21. . Airtightness between the piston 20 and the cylinder 30 is secured by the piston packing 22. Further, a piston rolling element holding portion 24 rotatably holding the piston rolling element 40 and a fixing portion 25 for fixing the piston rolling element holding portion 24 to the piston main body 21 are provided. In addition, the fixing | fixed part 25 can use a screw.

The inside of the cylinder 30 has a tubular shape. Further, the gas discharged into the flow path 123 described later flows into the cylinder 30, thereby moving the piston 20 stored therein in a direction to retract.

As described above, the piston rolling element 40 rotates in response to the movement of the piston 20, and so to say, the rotatable axle portion 41 horizontally disposed like a train wheel and the wheel portions disposed at both ends thereof 42 and 42, and is rotatably fixed to the piston main body 21 in the piston rolling element holding portion 24. The

surfaces

43, 43 of the

wheel portions

42, 42 in contact with the cylinder 30 have a curved surface shape so as to follow the inner peripheral surface of the cylinder 30. Accordingly, the

wheel portions

42, 42 are in surface contact with the inner peripheral surface of the cylinder 30 (see FIGS. 2A and 2B).

Here, the operation of the gas simulated gun 100 and the operation of the friction reducing device 10A having the above-described configuration will be described together. From the state of FIG. 2, the bullet B that is first fired is engaged with the engagement portion 127 by performing a so-called cocking operation. Next, by pulling the trigger 120, the first on-off valve 122 which has been closed is moved by a member not shown, whereby the liquefied gas previously filled in the tank 121 is vaporized, and the gas is The fluid is discharged from the first on-off valve 122 into the flow passage 123.

The spring 124 biases the second on-off valve 125 in the direction (right direction in the drawing) opposite to the muzzle 110. That is, the second on-off valve 125 is biased to be open. In this state, the gas discharged into the flow path 123 passes through the second on-off valve 125 in the open state, passes through the inside of the nozzle 126, and is jetted to the bullet B engaged with the engaging portion 127. The engaging portion 127 is elastic.

The projectile B from which the gas is injected has a cylindrical structure and moves rapidly in the barrel 128 for firing the projectile B. At that time, the piston 20 is disposed in the cylinder 30, and the piston 20 is disposed in the cylinder 30 in the left direction in the drawing (see FIGS. 3A and 3B).

The bullet B from which the gas is jetted has a cylindrical structure, passes through the barrel 128 for firing the bullet B, and the bullet B is fired from the muzzle 110. As described above, when the gas discharged into the flow path 123 passes through the second on-off valve 125 in the open state, the second on-off valve 125 is against the biasing force of the spring 124 along the gas flow. And move in the direction of the muzzle 110. Since the second on-off valve 125 is adjusted to be closed when the bullet B moves away from the muzzle 110, the second on-off valve 125 is closed when the bullet B is fired from the muzzle 110. Therefore, since the second on-off valve 125 is closed, the gas does not flow into the barrel 128, but this time, the gas flows into the cylinder 30.

By the gas flowing into the cylinder 30, the piston 20 moves in the right direction in the drawing (see FIGS. 4A and 4B). In accordance with the movement of the piston 20, the piston rolling element 40 is rotated.

Further, the gas flows into the cylinder 30, whereby the piston 20 moves in the right direction in the drawing (see FIGS. 5A and 5B). Along with the movement of the piston 20, the piston rolling element 40 further rotates. The piston 20 retracts further (moves to the right in the drawing) than the rear end opening 31 of the cylinder 30 at the maximum retraction thereof. The piston 20 and the slider 130 are integrally coupled at the rear portion. Accordingly, the slider 130 is retracted as well as the piston 20. At the same time, the main body spring 151 is compressed by retracting the gun main body 150 integrally coupled with the slider 130. Further, the nozzle 126 integrally coupled to the slider 130 is also retracted (see FIGS. 5A and 5B).

At that time, the bullet opening 140 is opened, and the bullet B1 located at the top of the plurality of bullets B biased to ascend by the bullet spring 141 and then fired and the next bullet is further elevated.

As the compressed body spring 151 restores to its natural length, the slider 130 moves forward (in the left direction in the drawing), that is, in the direction of the muzzle 110, and the piston rolling element 40 reversely rotates, and the piston 20 moves in the left direction in the drawing. Move to (see FIG. 6A, B). At that time, the bullet B1 positioned at the top of the plurality of bullets B is moved toward the muzzle 110 of the nozzle 126 so that the bullet B1 is pushed to the nozzle 126 and the bullet B1 engages with the engaging portion 127 . In this way, the so-called blowback is loaded with the next bullet, the bullet B1. Thus, each time the bullet B is fired, the above operation is repeated.

Here, the above operation is repeated each time the projectile B is fired, and since the operation is instantaneous, the friction reducing device 10A in this embodiment is rotated with the piston 20 by the rotation of the piston rolling element 40. The friction generated with the cylinder 30 can be reduced as much as possible, and wear thereby can be prevented. Needless to say, as described above, by having the piston rolling element 40, so-called misalignment between the piston 20 and the cylinder 30 is prevented.

Next, the friction reducing device 10B in the second embodiment will be described. The configuration of the gas simulation gun 100 other than the friction reducing device 10B is the same as that described above, and thus the description thereof is omitted. The friction reducing device 10B is arranged between the second piston 200 and the second cylinder 300 by arranging the second piston rolling element 400 rotating between the second piston 200 and the second cylinder 300 for blowback. To reduce friction. That is, although the second cylinder 300 is pressed upward when the magazine having the bullet B is loaded on the gas simulation gun 100, the second piston 200 is not pressed, so the lower portion 200a of the second piston 200 is relatively the second Although the problem occurs that the gap between the second piston 200 and the second cylinder 300 is narrowed by approaching the cylinder 300, the gap between the second piston 200 and the second cylinder 300 can be obtained by providing the second piston rolling element 400. By reducing the friction between the second piston 200 and the second cylinder 300, as described above, by solving the misalignment between the so-called second piston 200 and the second cylinder 300. Thereby, the wear of the second cylinder 300 is reduced.

In the friction reducing device 10B, the second piston 200 is disposed in the second cylinder 300 movably in the direction (the drawing right direction in FIG. 7A) in which it receives the pressure of the compressed gas and retracts similarly to the piston 20 described above. Ru. Further, the second piston 200 is provided with a second piston body 210, a second piston packing 220 which is disposed at the tip and has elasticity, and has a ring shape for receiving compressed gas, and the second piston packing 220. And a second screw portion 230 fixing the piston to the second piston main body 210. Furthermore, a second piston rolling element holding portion 240 for holding the second piston rolling element 400 rotatably and a second fixing portion for fixing the second piston rolling element holding portion 240 to the second piston main body 210 It has 250. In addition, the 2nd fixing | fixed part 250 can use a screw.

The second cylinder 300 is similar to the cylinder 30 in the friction reducing device 10A, but to be on the assumption, it has a cylindrical shape, and the gas discharged into the flow path 123 described later is contained in the second cylinder 300. By flowing in, the second piston 200 is moved in the backward direction.

As described above, the second piston rolling element 400 rotates in response to the movement of the second piston 200, and is disposed horizontally like the wheel of a single wheel, so to speak, with the second axle portion 410 serving as the shaft. , And a substantially circular second wheel portion 420 disposed on the second axle portion 410 and rotating therewith. However, the 2nd axle part 410 and the 2nd wheel part 420 which become a shaft may not rotate together, but may rotate independently, respectively. In addition, a state in which the second axle portion 410 serving as the axis thereof is disposed at the center of the substantially circular second wheel portion 420 is exhibited, and the second axle portion 410 in which the second wheel portion 420 is disposed in the horizontal direction. On the other hand, the second piston rolling element holding portion 240 is rotatably disposed as described in FIG. 7B.

The second piston rolling element holding portion 240 is rotatably fixed to the second piston main body 210 by the second piston rolling element fixing portion 250 so that the second wheel portion 420 can rotate. Further, the surface 430 of the second wheel 420 in contact with the second cylinder 300 has a curved surface so as to follow the inner circumferential surface of the second cylinder 300 (see FIG. 7B). Therefore, the second wheel portion 420 is in contact with the inner circumferential surface of the second cylinder 300 with its curved surface.

The friction reducing device 10B according to the second embodiment of the above configuration can reduce as much as possible the friction generated between the second piston 200 and the second cylinder 300 by rotation of the second piston rolling element 400. , It can prevent wear. In addition, it is needless to say that the so-called misalignment between the second piston 200 and the second cylinder 300 can be prevented by having the second piston rolling element 400 as described above.

The friction reducing device 10C in the third embodiment will be described. The friction reducing device 10C in the third embodiment is disposed in another gas-type simulated gun 101, and the direction in which compressed gas flows in and then retracts to load the next bullet, which is a bullet to be fired next. And a third slider 600 integrally joined at the rear with the third piston 500 and moving backward according to the movement of the third piston 500 in the backward direction, and the third piston 500 movably accommodated The third piston 500 integrally coupled to the third slider 600 by disposing the third cylinder 700 and the slider rolling element 800 rotating between the third slider 600 and the third cylinder 700; The friction of the third cylinder 700 is reduced to thereby reduce the wear of the third cylinder 700. That is, when the magazine having the bullet B is loaded on another gas-type simulated gun 101, the third cylinder 700 is pressed upward, but the third piston 500 is not pressed, so the third lower portion 500a of the third piston 500 is relative As a result, the third cylinder 700 approaches the third cylinder 700, and the gap between the third piston 500 and the third cylinder 700 narrows. However, by having the slider rolling element 800 rotating between the third slider 600 and the third cylinder 700, the gap between the third slider 600 and the third cylinder 700 is optimized, and the third As described above, by solving the so-called misalignment which optimizes the gap between the third piston 500 and the third cylinder 700 integrally coupled to the slider 600, as described above, the third piston 500 and the third cylinder 700 To reduce the friction between them and thereby reduce the wear of the third cylinder 700. The blowback is as described above. Further, the difference between the other gas simulation guns 101 and the gas simulation gun 100 is that the friction reduction device 10C of the third embodiment is included instead of the friction reduction device 10A of the first embodiment. It is.

Further, the friction reducing device 10C will be described. The third piston 500 receives the pressure of the compressed gas and moves backward (means moving to the right in the drawing in FIG. 8A) as described later. It is arranged. The third piston 500 has a third piston main body 501, a third piston packing 502 which is disposed at its tip end and has elasticity, and exhibits a ring shape, and the third piston packing 502 as a third piston main body 501. And a third screw portion 503 fixed to the Airtightness with the third cylinder 700 is secured by the third piston packing 502. Furthermore, it has the slider rolling element holding part 804 which hold | maintains the slider rolling element 800 rotatably (refer FIG. 8B).

The inside of the third cylinder 700 has a tubular shape. Further, the gas discharged into the flow path 123 described later flows into the third cylinder 700, thereby moving the third piston 500 accommodated therein in a direction to retract it.

The third slider 600 is integrally coupled to the above-described third piston 500 at its rear portion, and the third slider 600 is also moved rearward by the rearward movement of the third piston 500. In addition, as described above, the third slider 600, the third piston 500, and the rear portion are integrally connected, and at the front portion, the third cylinder 700 is vertically moved by the third piston 500 and the third slider 600. It is configured to be sandwiched between.

The slider rolling element 800 is rotated according to the movement of the third piston 500 as described above, and is disposed at both ends of the rotatable slider axle portion 801 horizontally disposed like the wheels of a train and so on The slider rolling elements 800 are rotatably fixed to the slider rolling element holding section 804 to the third slider 600. Further, slider wheel surfaces 803 and 803 in contact with the third cylinder 700 in the

slider wheel portions

802 and 802 have a curved surface shape. Therefore, the slider wheel surfaces 803 and 803 in the

slider wheel portions

802 and 802 are in surface contact with the outer peripheral surface of the third cylinder 700 (see FIGS. 8A and 8B).

Here, the operation of the other gas simulation gun 101 and the operation of the friction reducing device 10C in the third embodiment will be described together. The same parts as those of the above-described gas type simulated gun 100 will be described with the same reference numerals. From the state of FIG. 8, the bullet B that is fired first is engaged with the engagement portion 127 by performing a so-called cocking operation.

Next, by pulling the trigger 120, the first on-off valve 122 which has been closed is moved by a member not shown, whereby the liquefied gas previously filled in the tank 121 is vaporized, and the gas is The fluid is discharged from the first on-off valve 122 into the flow passage 123.

The spring 124 biases the second on-off valve 125 in the direction opposite to the muzzle 110 (right direction in the drawing of FIG. 9A). That is, the second on-off valve 125 is biased to be open. In this state, the gas discharged into the flow path 123 passes through the second on-off valve 125 in the open state, passes through the inside of the nozzle 126, and is jetted to the bullet B engaged with the engaging portion 127. The engaging portion 127 is elastic.

The projectile B from which the gas is injected has a cylindrical structure and moves rapidly in the barrel 128 for firing the projectile B. At that time, the third piston 500 is disposed in the third cylinder 700, and the third piston 500 is disposed in the third cylinder 700 in the left direction in the drawing (see FIGS. 9A and 9B). ).

The bullet B from which the gas is jetted has a cylindrical structure, passes through the barrel 128 for firing the bullet B, and the bullet B is fired from the muzzle 110. As described above, when the gas discharged into the flow path 123 passes through the second on-off valve 125 in the open state, the second on-off valve 125 is against the biasing force of the spring 124 along the gas flow. And move in the direction of the muzzle 110. Since the second on-off valve 125 is adjusted to be closed when the bullet B moves away from the muzzle 110, the second on-off valve 125 is closed when the bullet B is fired from the muzzle 110. Therefore, since the second on-off valve 125 is closed, no gas flows into the barrel 128, and this time, the gas flows into the third cylinder 700.

The gas flows into the third cylinder 700, whereby the third piston 500 moves in the right direction in the drawing (see FIGS. 10A and 10B). As the third piston 500 moves, the slider rolling element 800 rotates.

Further, the gas flows into the third cylinder 700, whereby the third piston 500 moves in the right direction in the drawing (see FIGS. 11A and 11B). Along with the movement of the third piston 500, the slider rolling element 800 disposed on the third slider 600 further rotates. The third piston 500 retracts further than the third rear end opening 701 of the third cylinder 700 at its maximum retraction. As described above, since the third piston 500 and the third slider 600 are integrally connected at the rear portion, the third slider 600 also retracts in the same manner as the third piston 500. At the same time, the main body spring 151 is compressed by retracting the gun main body 150 integrally coupled with the third slider 600. In addition, the nozzle 126 integrally coupled to the third slider 600 is also retracted.

At that time, the bullet opening 140 is opened, and the bullet B1 positioned at the top of the plurality of bullets B biased to ascend by the bullet spring 141 is fired next, and the bullet B1 to be the next bullet further rises.

As the compressed body spring 151 restores to the natural length, the third slider 600 moves in the direction of the muzzle 110, and the slider rolling element 800 disposed on the third slider 600 also reversely rotates, and the third piston 500 Moves in the left direction of the drawing (see FIGS. 12A and 12B). At that time, the bullet B1 positioned at the top of the plurality of bullets B is moved toward the muzzle 110 of the nozzle 126 so that the bullet B1 is pushed to the nozzle 126 and the bullet B1 engages with the engaging portion 127 . In this way, the so-called blowback is loaded with the next bullet, the bullet B1. Thus, each time the bullet B is fired, the above operation is repeated.

Here, the above operation is repeated each time the projectile B is fired, and since the operation is instantaneous, the friction generated between the third piston 500 and the third slider 600 is The rotation of the moving body 800 can reduce it as much as possible, thereby preventing wear. Also for this, as described above, by having the slider rolling element 800, the gap between the third slider 600 and the third cylinder 700 is optimized, and the third slider 600 is integrally coupled to the third slider 600. It is needless to say that the so-called misalignment is prevented by optimizing the gap between the three piston 500 and the third cylinder 700.

Next, a friction reducing device 10D according to a fourth embodiment will be described. The configuration of the gas simulation gun 101 other than the friction reducing device 10C in the third embodiment is the same as that described above, and thus the description thereof will be omitted. The difference between the friction reducing device 10D in the fourth embodiment and the friction reducing device 10C in the third embodiment is the difference in configuration between the slider rolling element 800 and the second slider rolling element 900. Therefore, by arranging the second slider rolling element 900 that rotates between the third slider 600 and the third cylinder 700, which are integrally coupled at the rear portion and the third piston 500 for blowback, The third embodiment is the same as the third embodiment for reducing the friction between the third slider 600 and the third cylinder 700.

The second slider rolling element 900 rotates in response to the movement of the third slider 600 as described above, and is disposed horizontally like a wheel of a single wheel, and serves as an axis of the second slider axle 910 as an axis. And a substantially circular second slider wheel portion 920 which rotates with it. However, the second slider axle unit 910 and the second slider wheel unit 920 as the shafts may not rotate together, but may rotate independently. In addition, a second slider axle 910 serving as an axis is disposed at the center of the substantially circular second slider wheel 920, and the second slider axle 920 is disposed horizontally in the second slider axle 910. With respect to 910, the second slider rolling element holding portion 940 is rotatably disposed as described in FIG. 13B.

The second slider rolling element 900 is rotatably fixed to the third slider 600 by the second slider rolling element holder 940. The second slider wheel surface 930, which is a surface of the second slider wheel 920 in contact with the third cylinder 700, has a curved surface (see FIG. 13B).

The above-mentioned third piston 500 is disposed in the third cylinder 700 movably in the direction (the right direction in the drawing in FIG. 13A) of receiving the pressure of the compressed gas. The third cylinder 700 is the same as the cylinder 30 in the friction reducing device 10A, but to be on the assumption, it has a cylindrical shape, and the gas discharged into the flow path 123 described later is contained in the second cylinder 300. By flowing in, the third piston 500 is moved in the backward direction.

The friction reducing device 10D having such a configuration is repeated each time the projectile B is fired, and since the operation is instantaneous, conventionally between the third piston 500 and the third slider 600 according to the prior art. The friction generated in the second slider rolling element 900 can be reduced as much as possible by the rotation of the second slider rolling element 900, and the wear thereby can be prevented. Also for this, as described above, by having the second slider rolling element 900, the position between the third slider 600 and the third cylinder 700 is optimized, and the third slider 600 is integrally coupled to the third slider 600. It goes without saying that so-called misalignment can be prevented by optimizing the gap between the three piston 500 and the third cylinder 700.

Further, either of the friction reducing device 10A in the first embodiment and the friction reducing device 10B in the second embodiment can be provided in the gas simulation gun 100. Further, either of the friction reducing device 10C in the third embodiment and the friction reducing device 10D in the fourth embodiment can be provided in the gas simulation gun 101. Furthermore, any one of the friction reducing device 10A in the first embodiment and the friction reducing device 10B in the second embodiment, the friction reducing device 10C in the third embodiment, and the friction reducing device in the fourth embodiment Either 10D can be placed on the gas simulant simultaneously (not shown).

10A Friction reducing device 10B in the first embodiment Friction reducing device 10C in the second embodiment Friction reducing device 10D in the third embodiment Friction reducing device 20 in the fourth embodiment Piston 30 Cylinder 40 Piston rolling element 41 Axle Part 42 Wheel part 100 Gas simulated gun 101 Other gas simulated gun 200 Second piston 300 Second cylinder 400 Second piston rolling element 410 Second axle part 420 Second wheel part 500 Third piston 600 Third slider 700 Third slider 3 cylinder 800 slider rolling element 801 slider axle section 802 slider wheel section 900 second slider rolling element 910 second slider axle section 920 second slider wheel section

Claims

A piston that moves in to allow gas to flow in and to load the next bullet;
A cylinder movably accommodating the piston;
A piston rolling element rotatably disposed on the piston;
When the piston moves backward, the piston rolling element rotatably disposed on the piston contacts the inside of the cylinder, whereby the piston rolling body is rotated and between the piston and the cylinder Friction reducing device to reduce friction.
The piston rolling element is a horizontally disposed rotatable axle portion;
2. A friction reducing device for reducing friction between the piston and the cylinder according to claim 1, further comprising: wheel portions disposed at both ends thereof.
The piston rolling element is disposed in the horizontal direction, and is a second axle portion serving as a shaft;
And a second wheel portion disposed at the second axle portion,
The friction reducing device for reducing the friction between the piston and the cylinder according to claim 1, wherein the second axle portion serving as its axis is disposed at the center of the second wheel portion.
A piston that moves in to allow gas to flow in and to load the next bullet;
A slider integrally coupled to the piston;
A cylinder movably accommodating the piston;
A slider roller rotatably disposed on the slider;
When the piston moves backward and the slider integrally connected to the piston moves backward, the slider rolling element rotatably disposed on the slider contacts the outside of the cylinder. A friction reducing device for reducing friction between the cylinder and the piston which is integrally coupled with the slider while the slider rolling element rotates.
The slider rolling element is a horizontally-arranged rotatable slider axle portion;
5. A friction reducing device for reducing friction between the piston and the cylinder according to claim 4, further comprising slider wheel portions disposed at both ends thereof.
The slider rolling element is disposed in the horizontal direction, and a second slider axle portion serving as an axis;
And a second slider wheel disposed at the second slider axle.
5. A friction reducing device for reducing friction between the piston and the cylinder according to claim 4, wherein the second slider axle which is an axis of the second slider wheel is disposed at the center of the second slider wheel.
A blow-back type gas simulation gun comprising a friction reducing device for reducing friction between the piston and the cylinder according to any one of claims 1 to 3.
A blowout gas gun having a friction reducing device for reducing friction between the piston and the cylinder according to any one of claims 4 to 6.
A friction reducing device for reducing friction between the piston and the cylinder according to any one of claims 1 to 3, the piston according to any one of claims 4 to 6, and the cylinder And a friction reducing device for reducing friction between the blowout and gas simulated guns.