EP1677066B1 - Air gun - Google Patents
Air gun Download PDFInfo
- Publication number
- EP1677066B1 EP1677066B1 EP20050000073 EP05000073A EP1677066B1 EP 1677066 B1 EP1677066 B1 EP 1677066B1 EP 20050000073 EP20050000073 EP 20050000073 EP 05000073 A EP05000073 A EP 05000073A EP 1677066 B1 EP1677066 B1 EP 1677066B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve pin
- rear end
- muzzle
- end side
- gun
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003825 pressing Methods 0.000 claims description 38
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 104
- 238000010304 firing Methods 0.000 description 13
- 238000012856 packing Methods 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
- F41B11/70—Details not provided for in F41B11/50 or F41B11/60
- F41B11/72—Valves; Arrangement of valves
- F41B11/723—Valves; Arrangement of valves for controlling gas pressure for firing the projectile only
Definitions
- the present invention relates to an air gun for firing bullets using supplied compressed gas, and for carrying out blowback in order to move a slide towards the rear of the gun to fire the next bullet.
- a gun for carrying out blowback in order to shoot the next bullet
- supply of compressed gas to the air gun for shooting the bullet using the compressed gas is carried out by a gun comprised of a compressed gas chamber for storing compressed gas, an opening and closing valve for carrying out release of compressed gas in order to fire a bullet, and a switching valve for switching a discharge destination for compressed gas supplied by opening the opening and closing valve
- the opening and closing valve being provided inside a handle and opened by striking a valve rod on a hammer to supply compressed gas inside the compressed gas chamber
- the switching valve being provided in a slider section or handle and switching the discharge destination of the compressed gas supplied by opening the opening and closing valve.
- an automatic air gun of the related art that uses compressed carbon dioxide gas or air is known, for example, such as the air gun shown in Fig. 22 (related art 1).
- Numeral 401 indicates an air gun. Operation of the air gun 401 will be described in the following, but up to where a bullet W is supported inside a rubber chamber 408 and the bullet W itself fired, from a state where an exchange valve 409 is moved to the rear of the air gun 401 against urging force of a valve spring 412 will be described.
- a trigger 402 for firing the bullet W is pulled.
- a hammer 403 rotates in the direction shown by an arrow, and presses down a valve pin 404.
- valve 406 By pressing down the valve pin 404 the valve 406 is opened, compressed gas stored in an accumulator chamber 405 passes through the valve 406 and flows to the slide 407 side.
- the exchange valve 409 at this time blocks off a cylinder 413 side so that no compressed air flows out to the cylinder 413 side.
- Compressed gas that flows in to the slide 407 side flows in to the side of a bullet W inside the rubber chamber 408, pressing the bullet W out, passing through the inside of an outer barrel 410 to be fired with force from the muzzle.
- an air gun 501 of related art 2 shown in Fig. 23 is as follows.
- 501 is an air gun.
- the operation of the air gun 501 will be described, but description is from a state where a bullet W is supported inside a loading packing 508.
- an exchange valve 509 is different from that of the first related art, and in a state where a bullet W has been loaded into the loading packing 508, it is possible for compressed gas stored in an accumulator chamber 505 to flow out to the side of a bullet W loaded in the loading packing 509 in a normal state without pressing the bullet, and no air flows out to the cylinder 513 side.
- the trigger 502 is pulled in order to fire the bullet W.
- a hammer 503 rotates in the direction shown by the arrow, and presses a valve rod 504.
- the valve 506 is opened as a result of the valve rod 504 being pressed, and compressed gas stored in the accumulator chamber 505 flows through the valve 506 to a piston block 507 side.
- an exchange valve 509 puts a loading packing 508 side in an open state using urging force of a spring 512, and a side end portion of the exchange valve 509 to the rear of the air gun 501 blocks of the cylinder 513 side, which means that compressed gas that has flowed to the piston block 507 side flows to the bullet W side inside the loading packing 508, which means that the bullet W is forced out, passes inside the outer barrel 510 and is fired with force from the muzzle.
- compressed gas that has been prevented from flowing out to the muzzle side flows to the inside of the piston block 507, the piston block 507 is moved to the rear of the air gun 501, moving the hammer 503 rearwards, and when returned to the muzzle side, a muzzle side tip of the piston block 507 presses the next bullet supplied from a magazine 511, loads the bullet into the loading packing 508, and carries out preparation for firing of the next bullet.
- the air guns of related art 1 and related art 2 the next bullet is supplied by changing whether compressed gas flows from a muzzle side at an upper part of the air gun to a muzzle side inside a slide provided capable of reciprocal sliding to the rear of the gun, or flows to the rear of the gun, but an exchange valve for changing the flow path of the compressed gas is provided inside a slide capable of sliding at an upper part of the air gun.
- an opening and closing valve for supplying compressed gas, and an exchange valve or mechanism for cutting off supply of compressed air to a bullet side after the bullet has been loaded and preparing to fire a bullet, so that compressed gas is supplied in order to move a cylinder etc. to the rear of the gun, are each provided separately.
- an object of the present invention is to reduce the size of functions of an opening and closing valve and an exchange valve to improve compressed gas usage efficiency, and to enable miniaturization of an air gun.
- the air gun of USP 6,026,797 can provide a valve that is compact in function and improves usage efficiency of compressed gas.
- the air gun is constructed with a hit pin arranged in a cylinder portion, a valve body arranged within a hollow portion of the cylinder portion and having a bullet supplying nozzle chamber and a valve pin chamber, a gas inlet port opened to a sleeve-shaped circumferential face of the valve pin chamber, a bullet supplying nozzle arranged within the bullet supplying nozzle chamber, and a valve pin arranged within the valve pin chamber.
- the hit pin is pressed on a muzzle side and the valve pin is made to slide to the muzzle side so that an air-tight state between a valve pin flange portion and a side face of the valve pin chamber on its gun rear end side is released.
- a compressed gas is supplied to a nozzle chamber side opening and a valve pin chamber side opening from a clearance between the valve pin flange portion and the gun rear end side face of the valve pin chamber.
- the air gun of related art 3 is operated by compressed gas, and compressed gas starts to cause the slider to retreat before compressed gas starts to cause the bullet to move inside the barrel. Therefore, start of movement of the bullet and firing are delayed more than retreating movement of the slide. Because of this slide retreating, it is easy for the valve to move up and down, particularly in a downward direction, and there is a problem that shooting precision is lowered.
- the air gun of related art 3 causes operation of a bullet supply nozzle using high pressure compressed gas, and as a result of repeating this operation there may be occasions when problems with durability arise.
- US 6,026,797 A which forms a basis for independent claims 1 and 2, discloses an air gun which is constructed by a hit pin arranged in a cylinder portion, a valve body arranged within a hollow portion of the cylinder portion and having a bullet supplying nozzle chamber and a valve pin chamber, a gas inlet port opened to a sleeve-shaped circumferential face of the valve pin chamber, a bullet supplying nozzle arranged within the bullet supplying nozzle chamber, and a valve pin arranged within the valve pin chamber.
- the hit pin is pressed on a muzzle side and the valve pin is slid to the muzzle side so that an airtight state between a valve pin flange portion and a side face of the valve pin chamber on its gun rear end side is released.
- a compressed gas is supplied to a nozzle chamber side opening and a valve pin chamber side opening from a clearance between the valve pin flange portion and the gun rear end side face of the valve pin chamber.
- the object of the present invention is to improve shooting precision by causing a bullet to be fired before retreating of the slide commences, which is a problem in related art 3. This object is solved by an air gun having the features of claim 1 and an air gun having the features of claim 2.
- An air gun of the present invention comprises:
- the cylinder section is provided within a gun rear end side of the slide capable of free movement, and there is no hit pin.
- Fig. 1 is a cross section explanatory drawing showing an initial state of an air gun of a first embodiment of this invention
- Fig. 2 - Fig 10 are cross sectional explanatory drawings of operational states of the air gun of the first embodiment of this invention
- Fig. 1 is an enlarged partial cross sectional explanatory drawing of the air gun of the first embodiment of this invention
- Fig. 12 is a cross sectional explanatory drawing showing an initial state of an air gun of a second embodiment of this invention
- Fig. 13 - Fig 12 are cross sectional explanatory drawings of operational states of the air gun of the second embodiment of this invention.
- the air gun 1 is an air gun.
- the air gun 1 is an automatic type air gun for firing a bullet W using gas pressure of compressed carbon dioxide gas, and carrying out supply of the next bullet.
- compressed carbon dioxide gas is used, but it is also possible to cause operation using other compressed gas such as compressed nitrogen gas or compressed air.
- compressed carbon dioxide is the compressed gas.
- a handle section 1a is provided in a gun rear end side lower section of the body of the air gun 1.
- a compressed gas cylinder A for supplying compressed gas is housed inside this handle section 1a.
- the compressed gas cylinder A is fitted from under the handle section 1a, and by pressing upwards using a presser screw B a seal is broken using a lower tip of a gas supply port C, which will be described later, and compressed gas is supplied from the gas supply port C.
- the structure is such that the compressed gas cylinder A is housed inside the handle section 1a, but it can also be fitted outside the handle section 1a, or alternatively constructed so that compressed gas is supplied from a compressed cylinder fitted by a user to the air gun 1 using a hose.
- Numeral 2 is a barrel and 2a is a barrel fixing section.
- the barrel 2 is cylindrical in shape, is provided in a direction to the rear of the gun from a muzzle D, and has a chamber 37 provided at a gun rear end side.
- the barrel fixing section 2a is made cylindrical and capable of being inserted into and fixing the barrel 2, and is fixed to the body of the air gun 2 at a gun rear end side of the barrel 2. Therefore, the barrel 2 is fixed to the body of the air gun 1 by fixing to the barrel fixing section 2a.
- Numeral 3 is a slide, and an opening into which the barrel 2 can be inserted is provided in a muzzle D side of the slide 3, the barrel 2 is passed through the opening to span from the muzzle D side to a gun rear end side, the opening is arranged parallel to the barrel 2 so as to envelope the barrel, and is capable of sliding in parallel along the barrel 2. Then, the slide 3 is normally urged to the muzzle D side by a slide spring 4 fitted into the barrel 2 so that one end is supported in the barrel fixing section 2a and the other end is supported on the muzzle side of the slide 3.
- an engagement projection 3a projecting downwards is formed on an intermediate section of the slide 3 above the barrel fixing section 2a, and the slide 3 is controlled so as not to move to the muzzle D side from the gun rear end side of the slide 3 by engagement with the barrel fixing section.
- an engagement indent 3b capable of engaging with a trigger bar which will be described later, is provided in a lower part of a gun rear end side of the slide 3.
- the engagement indent 3b is a groove shape with gently sloping walls for releasing engagement with an engaged trigger bar 26 by sliding the trigger 23, with the trigger bar 26, which will be described later, moving away from the engagement indent 3b while moving downwards, and moving downwards if engagement is released.
- a muzzle side lower section 3c for contacting the barrel fixing section of the slide 3 moves a specified amount to the gun rear end side is provided at a muzzle side lower section of the slide 3.
- Numeral 5 is a magazine.
- the magazine 5 is positioned at a gun rear end side lower section of the barrel 2, capable of being removed from the body of the air gun 1. Then, when fitting to the air gun 1, the upper part of the magazine is provided with an opening 5b in the same direction as the opening of the barrel 2.
- an indent 5a defining substantially the same curved surface as the spherical surface of the bullet W is provided at an inner surface upper part of the opening of the magazine, so that it is easy to hold a fed bullet W.
- a magazine follower 6 and magazine spring 7 normally urging a bullet W loaded in the magazine 5 towards the upper opening are provided in an inner part of the magazine 5.
- the magazine follower 6 has an upper section with a spherical surface the same as a bullet W, and a lower section engages with the magazine spring 7.
- Numeral 8 is a cylinder.
- the cylinder 8 is formed as a cylinder closed at a gun rear end side, and is fixed to an inner wall of the slide 3 so that a muzzle D side is open at a gun rear end side of the slide. Also, at a side surface lower section of the cylinder 8, compared to another side surface, there is a notch 80 cut out to a gun rear end side.
- Numeral 9 is a cylindrical hit pin, with a flange section 9a that is larger in diameter than the rest of the hit pin being provided on one end.
- the hit pin 9 is inserted from the muzzle side D into a through hole formed substantially in the center of a gun rear end side surface opposite an opening of the cylinder from the inner side of the cylinder 8, and projects to the gun rear end side, with the flange section 9a contacting the inner surface of the cylinder 8 and provided capable of sliding.
- the hit pin 9 provided in this way is pressed by a hammer, that will be described later, and moves to the muzzle D side.
- the hammer 10 is a hammer.
- the hammer 10 is provided at a gun rear end side of the cylinder 8.
- a hammer shaft 11 is provided so as to be freely rotatable at to a lower portion of the hammer 10 at the same time as being fixed to the body of the air gun 1, with the hammer 10 being freely rotatable about the hammer shaft 11.
- a hammer strut shaft 12 capable of rotatable attachment of a hammer strut 19, which will be described later, is also provided on the hammer 10, at a gun rear end side of the hammer shaft 11.
- Numeral 14 is a shear.
- the shear 14 is provided close to a muzzle side of the hammer 10, with a lower end being attached to the body of the air gun 1 so as to be rotated by rotation of a rotation shaft 15, with the rotation shaft 15 as a center.
- the shear 14 has a hammer engagement section 16 capable of engagement with the shear engagement section 13 of the hammer 10 provided at a central part, so that a rotational state of the hammer 10 is maintained in a state where the upper part of the hammer 10 has rotated to the gun rear end side.
- An engagement projection 17 for engagement with a trigger bar 26, which will be described later, is provided on an upper end of the shear 14.
- Numeral 18 is a shear spring, arranged between the body of the air gun 1 and the shear 14, and normally urging the shear 14 to the hammer 10 side.
- Numeral 19 is a hammer strut, with one rotatable end, attached to the hammer strut shaft 12 provided on a gun rear end of the hammer shaft 11, and the other end inserted into a through hole formed in a hammer strut fixing section 20 fixed to an inner part of the handle section 1a.
- a hammer spring 22 is then provided on the hammer strut 19 between the projection section 21 provided at an intermediate part of the hammer strut 19 and the hammer strut fixing section 20, urging the hammer 10 to the muzzle D side when it has been rotated to the gun rear end side.
- the hammer 10 is positioned without being rotated, rotated to the gun rear end side as shown in Fig. 3 , and in a state engaged with the shear 14 is urged to the muzzle D side.
- the hammer 10 stores force for rotating to the gun rear end side, and when engagement is released and the hammer 10 rotates to the muzzle D side the hammer 10 comes into contact with the hit pin 9 and the hit pin 9 becomes capable of sliding to the muzzle D side.
- Numeral 23 is a trigger.
- the trigger 23 has a trigger shaft 24 provided at a middle part of the trigger 23 that rotates on a shaft, and is normally urged to the muzzle side by a trigger spring 25.
- Numeral 32 is a bullet feed nozzle link.
- the bullet feed nozzle link 32 has a muzzle D side end engaging with a bullet feed nozzle link shaft 29 at an upper end of the trigger 23, and a gun rear end side is engaged with a bullet feed nozzle 36 that will be described later.
- a bullet feed nozzle engagement projection 51 engaging with a bullet feed nozzle link engagement projection 52 of the bullet feed nozzle 36 is provided on rear part of the bullet feed nozzle link 32.
- the bullet feed nozzle link 32 moves to the nozzle side as a result of a user pulling the trigger 23 to rotate the trigger 23 about the trigger shaft 24 against the urging of the trigger spring 25.
- Numeral 26 is a trigger bar.
- the trigger bar 26 is arranged between the trigger shaft 24 and the bullet feed nozzle link shaft 29, and between the engagement projection 17 of the shear engagement section 13, and rotatably engages with the trigger 23 at an upper end of the trigger 23. If the trigger 23 is pulled by a user, to rotate the trigger 23 about the trigger shaft 24 against the urging force of the trigger spring 25, the trigger bar 26 is moved to the muzzle side.
- a shear projection 27 is provided on a gun rear end side of the trigger bar 26, capable of moving the engagement projection 17 of the shear 14 to the muzzle side by moving the trigger bar 26 to the muzzle side.
- the shear projection 27 of the trigger bar 26 constructed in this way is provided so as to position the shear 14, which means that it is it is positioned at a lower part of the slide 3.
- an engagement projection 27a capable of engaging with the engagement indent 3b is formed.
- the engagement projection 27a is capable of engaging with the engagement indent 3b, by sliding the slide 3 to the gun rear end side engagement of the engagement projection 27a with the engagement indent 3b is released to move the engagement projection 27a downwards.
- the engagement indent 3b at the lower part of the slide 3 is provided having a width capable of moving within the engagement indent 3b even if the trigger bar 26 moves to the gun rear end side as a result of the trigger 23 being pulled in order to fire, and with movement of the trigger bar 26 to the gun rear end side, engagement between the engagement projection 27a and the engagement indent 3b is not released.
- the trigger bar 26 is moved downwards to release engagement between the shear projection 27 of the trigger bar 26 and the engagement projection 17 of the shear 14.
- Numeral 28 is a valve body, and 48 is a valve body rear cover.
- the valve body 28 is cylindrical in shape, with a hollow valve chamber 30 provided at an inner part, and is positioned within the hollow part of the cylinder 8 and fixed to the body of the air gun capable of sliding inside the cylinder 8.
- the valve body 28 fitted into the cylinder 8 also moves to the gun rear end side, which means that a space is formed inside the cylinder 8
- the gun rear end side of the valve body 28 is moved further to the muzzle D side that the notch part 80 of the cylinder 8, and gas within the space inside the cylinder 8 formed by the valve body 28 can be discharged from the notch part 80 to the outside.
- valve body 28 movement distance for the space of the valve body 28 and the gun rear end side inner surface of the cylinder 8 is about 31 mm in a state where the muzzle side lower part 3c of the slide 3 contacts the valve fixing section 2a and the slide 3 is moved as far as possible to the gun rear end side (state shown in Fig. 2 and Fig. 9 ), but compared to this movement distance for positioning the gun rear end side of the valve body 28 at the notch section 80 is about 1 mm.
- through holes of smaller diameter than the valve pin chamber 30 are formed extending from the gun rear end side of the valve body 28 to the muzzle side.
- the respectively formed through holes are called a muzzle side through hole 31 that is formed at a muzzle side of the valve pin chamber 30 and a rear end side through hole 33 formed in a gun rear end side of the valve pin chamber 30.
- the muzzle side through hole 31 is formed enclosing a donut shaped ring packing 35 between a muzzle side wall of the valve body 28 and a packing press washer 34 provided at a valve pin chamber side of the muzzle side wall of the valve body 28.
- the gun rear end side diameter of the rear end side through hole 33 is a larger diameter than the hit pin 9 of the cylinder 8, and when the valve body 28 is positioned as far as possible to the gun rear end side inside the cylinder 8 it is possible for the gun rear end side surface of the valve body 28 to contact a gun rear end side inner surface of the cylinder 8.
- a gas feeding port C being a compressed gas path for feeding from the compressed gas cylinder A housed inside the handle section 1a to the valve body 28 is opened in a side surface lower section of the valve pin chamber 30.
- the gas feeding port C has an upper end opened to the valve pin chamber 30, and a lower end positioned at an upper end of the compressed cylinder inserted in and fixed in the handle section 1a.
- a seal breaking pin (not shown) for breaking a seal section (not shown) provided on an upper part of the compressed gas cylinder A at a lower end of the gas feeding port C, the seal breaking pin breaks the seal of the compressed gas cylinder C by inserting and fitting the compressed gas cylinder into the handle section 1a, compressed gas passes through the gas feeding port C to be fed to the valve pin chamber 30, and it becomes possible to normally increase gas pressure in the compressed gas to the valve pin chamber 30.
- Numeral 36 is a bullet feeding nozzle.
- the bullet feeding nozzle 36 is formed in a cylindrical shape, with a rib shaped bullet feeding nozzle link engagement projection 52 capable of engaging with a bullet feeding nozzle engagement projection 51 being provided at a gun rear end side.
- the bullet feeding nozzle 36 is arranged at a muzzle D side of the valve body 28, a gun rear end side section is fitted into a bullet feeding nozzle insertion section 41 projecting at a muzzle side of the valve body 28, a muzzle side end section is positioned towards a gun rear end side of an upper opening of magazine 5 positioned at a gun rear end side of the barrel 2.
- the bullet feeding nozzle 36 provided in this way has a muzzle D side tip part of the bullet feeding nozzle 36 press a bullet W inside an opening 5b of the magazine positioned at a muzzle D side of the valve body 28 by moving in the muzzle D direction, and move the bullet W into a chamber 37 provided at a gun rear end section of the barrel 2.
- valve pin 39 is a valve pin.
- the valve pin 39 is cylindrical in shape, and is comprised of a gun rear side pin body 40, and a muzzle side bullet feed nozzle insertion section 41.
- a pressing section 42 is provided on a gun rear end side of the pin body 40.
- the pin body 40 has a muzzle D side tip fitted into a muzzle side through hole 31, and sliding is possible while maintaining an air-tight seal between an outer periphery of the pin body 40 and a ring packing 35.
- the bullet feed nozzle insertion section 41 connected to the pin body 40 projects to the muzzle side of the valve body 28.
- the pin body 40 is arranged so that the connected pressing section 42 is inserted into the rear end side through hole 33 to position a gun rear end side tip part of the pressing section 42 adjacent to the hit pin 9. It is then possible for the pressing section 42 to slide in a state where compressed gas cam pass between the pressing section 42 and the rear end side through hole 33.
- a valve pin flange section 43 contacting the gun rear end side side surface of the valve pin chamber 30 is provided at a gun rear end side of the pin body 40, having a smaller diameter than the inner diameter of the valve pin chamber 30.
- the valve pin flange section 43 and the gun rear end side side surface of the valve pin chamber 30 are then brought into contact to give an airtight state.
- a flat packing 47 formed in a ring shape is arranged at a gun rear end side side surface of the valve pin chamber 30 that contacts the valve pin flange section 43.
- valve pin return spring 44 is a valve pin return spring
- the valve pin return spring 44 is a coil spring, with the pin body 40 inserted into it, provided between the valve pin flange section 43 of the pin body 40 and the muzzle side through hole 31, and normally urging the pin body 40 to the gun rear end side.
- the gun rear end side side surface of the valve pin chamber 30 and the valve pin flange section 43 are caused to maintain a sealed state by the urging force of the valve pin return spring 44.
- a passage 45 opening to the muzzle side is provided in a cylindrical section of the pin body 40 provided as described above, and a valve pin chamber opening 46 opening to the side surface of the pin body 40 is provided at a muzzle side of the pressing section 42, enabling through flow of compressed gas.
- valve pin 39 By providing the valve pin 39 in the valve pin chamber 30 of the valve body 28 in this way, if the valve pin 39 is pressed against the hammer 10, pressed against the hit pin 9 that has moved to the muzzle D side, and moved to the muzzle D side, a clearance is formed between the valve pin flange section 43 of the pin body 40 and the gun rear end side side surface of the valve pin chamber 30, compressed gas normally supplied to the valve pin chamber 30 passes from the clearance formed by the gun rear end side side surface of the valve pin chamber 30 and the valve pin flange section 43 through the valve pin side opening 46 of the pin body 40 and the passage 45, is supplied to the muzzle D side opening of the bullet feeding nozzle 36 and fires the bullet W inside the chamber 37.
- a cylinder section 8a of this second embodiment of the invention is cylindrical in shape closed at a gun rear end side, provided so as to be capable of movement at an inner wall of a slide 3 so as to open the muzzle D side at a gun rear end side of the slide 3, and differs from the first embodiment in that there is no hit pin 9.
- a pressing section 42a of the second embodiment is provided at a gun rear end side of the pin body 40, fixed to the pin body 40, inserted into the rear end side through hole 33 of the valve pin 39 to project to the gun rear side, and has a gun rear side tip end positioned capable of contacting a muzzle side inner surface of a rear wall of the cylinder section 8a.
- the pressing section 42a is capable of sliding in a state where compressed gas can pass from a clearance between the outer peripheral surface of the pressing section 42a and the rear end side through hole 33.
- compressed gas supplied from the gas supply port C to the valve pin chamber 30 is supplied from between the gun rear end side side surface of the valve pin chamber 30 and the valve pin flange section 43 to the valve pin chamber side opening 46, through the bullet feed nozzle insertion section 41 and is supplied to the muzzle D side of the bullet feeding nozzle 36 to fire a bullet W from the muzzle.
- compressed gas supplied from the valve pin chamber side opening 46 is supplied from a clearance between the pressing section 42a and the rear end side through hole 33 into which the pressing section 42a is inserted to the gun rear end side, causing the cylinder section 8a to move to the gun rear end side.
- the states shown in Fig. 1 and Fig. 12 are the basic position before operation of the air gun 1.
- the air gun 1 has the hammer rotated to the gun rear end side, in a state where the hit pin is not being pressed, and also, the compressed gas cylinder A is already housed inside the handle section 1a, and has a seal broken by the gas supply port C, with compressed gas then being supplied from the compressed gas cylinder A through the gas supply port C to inside the valve pin chamber 30 of the valve body 28.
- bullets W are already loaded in the magazine 5, urged upwards by the magazine spring 7 and the magazine follower 6, with the first bullet W being positioned in an indent 5a of the opening 5b.
- valve pin chamber 30 of the valve body 28 is already full of compressed gas, and gas pressure of the compressed gas acts uniformly on the inner wall of the valve pin chamber 30 and an outer surface of the pin body 40 exposed to the inside of the valve pin chamber 30, but the force of compressed gas acting on the pin body 40 does not drive the valve pin 39 in a direction to move to the muzzle D side, and the valve pin 39 is urged to the gun rear end side by the valve pin return spring 44 so that valve pin flange section 43 contacts the gun rear end side inner surface of the valve pin chamber 30 in an air tight manner, which means that the valve pin 39 maintains an airtight state of contact between the valve pin flange section 43 and the gun rear end side inner surface of the valve pin chamber 30, and compressed gas does not move from the valve pin chamber 30 to the outside.
- the slide 3 When using the air gun 1, as shown in Fig. 2 and Fig. 13 , the slide 3 is moved to the gun rear end side against the urging force of the slide spring 4. In doing so, the cylinder 8, 8a inside the slide 3 are also moved to the gun rear end side. At this time, the hit pin 9 also moves together with the slide 3 to the gun rear end side, but the valve body 28 does not move. Also, since the valve pin 39 also does not move, compressed gas remains inside the valve pin chamber.
- the cylinder 8, 8a presses the hammer 10 by the extent of that movement at the rear lower end 50 of the cylinder 8, 8a, and the hammer 10 is rotated to the gun rear end side against urging force due to the hammer strut 19 and the hammer spring 22.
- the engagement projection 27a comes away from the engagement indent 3b of the slide 3, is moved downwards by a lower surface of the slide 3 and engagement with the shear 14 is released, which means that regardless of whether the trigger 23 is pulled or not pulled, the shear 14 is positioned at the same initial position at the hammer 10 side as in Fig. 1 and Fig. 12 .
- the muzzle side lower section 3c of the slide 3 comes into contact with the muzzle side lower part of the barrel fixing section and can no longer move to the gun rear end side, movement of the slide 3 is completed, and the slide 3 is returned to the same position as Fig. 1 and Fig. 12 .
- Fig. 3 and Fig. 14 show the state where the slide 3 has been returned.
- the hammer 10 has the shear engagement section 13 engaged with hammer engagement section 16 of the shear 14, and is fastened in a state rotated to the gun rear end side against urging force die to the hammer spring 22.
- the cylinder 8, 8a is also returned to the initial position shown in Fig. 1 and Fig. 12 . Since the cylinder 8, 8a is returned to the initial position, the trigger bar 26 also moves upwards with the engagement projection 27a engaged with the engagement indent 3b of the slide 3.
- the user moves the trigger 23 to the gun rear end side as shown by the arrows in order to fire.
- the trigger bar 26 and the bullet feed nozzle link 32 move to the muzzle D direction.
- the bullet feed nozzle link 32 moves to the muzzle D side by the bullet feed nozzle link engagement projection 52 for engaging with the bullet feed nozzle engagement projection 51, the bullet W at the uppermost position inside the magazine 5 is pushed out from the opening 5b, and loaded inside the chamber 37.Since the bullet feed nozzle 36 is above, the next bullet W inside the magazine 5 can not rise up to the loadable position.
- the hammer 10 presses the hit pin 9.
- the hammer 10 presses the rear section rear surface of the cylinder 8a.
- the valve pin positioned at the muzzle D side of the hit pin 9 or the cylinder 8a is pressed against the rear inner surface of the hit pin 9 or the cylinder 8a and moved to the muzzle D side against the urging force of the valve pin return spring 44.
- valve pin 39 If the valve pin 39 is moved to the muzzle D side, the valve pin flange section 43 of the valve pin 39 is also moved to the muzzle D side, contact of the airtight state between the gun rear end side inner wall of the valve pin chamber 30 and the valve pin flange section 43 is released, compressed air that has been supplied to the valve pin chamber 30 passes through a clearance made possible between the gun rear end side inner wall of the valve pin chamber 30 and the valve pin flange section 43, and supplied into a pin body 40 from a valve pin chamber side provided on the pin body 40 of the valve pin 39. Compressed gas supplied to the inside of the pin body 40 passes through the passage 45, and also through the through hole 36a of the bullet feed nozzle 36, to fire the bullet W loaded inside the chamber 37. At the same time, with the first embodiment, compressed gas flows out from a clearance 49 between the pressing section 42 continuously fixed to the gun rear end side of the pin body 40 and the rear end side through hole 33 of the valve body 28 to the hit pin 9 side.
- Fig. 11 is an enlarged explanatory drawing of the area around the pressing section 42.Inflow of compressed gas continues further, the gun rear end side inner surfaces of the cylinder 8, 8a are pressed by gas pressure of compressed gas flowing out from the clearance 49 between the pressing section 42, 42a and the rear end side through hole 33 to the gun rear end side, a space is formed at the gun rear end side inside the cylinder 8, 8a between the gun rear end side of the valve body 28, and the formed space can be expanded by gas pressure of compressed gas flowing in. This state is shown in Fig. 7 and Fig. 18 .
- the hit pin 9 releases pressing pressure of the pressing section 42 of the valve pin 39
- the cylinder 8a since the cylinder 8a has moved to the gun rear end direction the cylinder 8a releases pressing pressure of the pressing section 42a of the valve pin 39, the valve pin 39 is subsequently pressed back to the gun rear end side by the urging force of the valve pin return spring 44.
- valve pin 39 The state where the valve pin 39 has been returned to the gun rear end side is shown in Fig. 8 and Fig. 19 .
- the valve pin flange section 43 of the valve pin 39 and the gun rear end side inner surface of the valve pin chamber 30 are in an airtight state, and supply of compressed gas to the inside of the valve pin 39 is completed. Even if supply is cut off, since compressed gas already supplied to the inside of the space of the gun rear end side inside the cylinder 8 continues expansion, the cylinder 8, 8a and the slider 3 continue to move further to the gun rear end side as a result of this expansion force and the inertia of the cylinder 8, 8a and the slide 3. If the slide 3 subsequently move as far as possible to the gun rear end side and the hammer rotates to the gun rear end side, the hammer 10 again engages with the shear 14. This state is shown in Fig. 9 and Fig. 20 .
- the cylinder 8, 8a and the slide 3 are also moved as far as possible to the gun rear end side due to contact of the muzzle side lower section 3c with the barrel fixing section 2a, and gas is discharged from a clearance formed between a gun rear end side lower part of the valve body 28 and a notch 80 of the cylinder 8.
- the trigger 23 is pulled to fire the gun, the moved slide 3 moves to the gun rear end side, a successful operation to return again to the state of Fig. 10 and Fig. 21 is instantly carried out, and in the state of Fig. 10 and Fig. 21 the trigger 23 has again been pulled to the gun rear end side.
- the bullet feed nozzle 36 being moved in the muzzle D direction by the bullet feed nozzle link 32 is blocking the opening 5b of the magazine 5, the next bullet W inside the magazine 5 can not be raised to the loadable position.
- the engagement projection 27a of the trigger bar 26 has already reached the lower part of the engagement indent 3b of the slide 3, but the shear engagement section 27 of the trigger bar 26 is positioned at a lower part of the engagement projection of the shear 14, and can not move upwards.
- the trigger 23 is returned to the muzzle D side by urging force of the trigger spring 25, and the bullet feed nozzle link 32 linked to the trigger 23 moves to the gun rear end side.
- the bullet feed nozzle engagement section for to the bullet feed nozzle link 26 is also moved to the gun rear end side. Therefore, the bullet feed nozzle link engagement projection 52 being engaged with the bullet feed nozzle engagement projection 51, and the bullet feed nozzle 36, also move to the gun rear end side.
- the opening 5b of the magazine 5 is opened by rearward movement of the bullet feed nozzle 36, and it is possible to load the next bullet W into the chamber 37.
- the trigger bar 26 is moved to the gun rear end side and the shear engagement projection 27 is moved to the gun rear end side by the engagement projection 17 of the shear 14, making it possible for the trigger bar 26 to move upwards, moving upwards by the urging force of the trigger spring 25, with the engagement projection 27a engaging with the engagement indent 3b of the slide 3.
- This state is shown in Fig. 3 and Fig. 14 .
- the bullet W is loaded in the magazine will be the next bullet, but preparing for the state firing the next bullet W, by pulling the trigger 23 the operations shown in Fig. 3 to Fig. 10 and in Fig. 12 to Fig. 21 are repeated, firing the next bullet, and also preparing for firing of the subsequent bullet.
- the air gun of the present invention it is possible to carry out firing of a bullet before rearward movement of the slide starts. For this reason, since a bullet is fired before the barrel is subjected to any effect due to rearward movement of the slide, shooting precision is improved. Also, the air gun of the present invention has a bullet feed nozzle that is operated manually, and high pressure gas does not act on the nozzle, which means that durability is improved.
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Description
- The present invention relates to an air gun for firing bullets using supplied compressed gas, and for carrying out blowback in order to move a slide towards the rear of the gun to fire the next bullet.
- With a related art air gun for carrying out blowback in order to shoot the next bullet, supply of compressed gas to the air gun for shooting the bullet using the compressed gas is carried out by a gun comprised of a compressed gas chamber for storing compressed gas, an opening and closing valve for carrying out release of compressed gas in order to fire a bullet, and a switching valve for switching a discharge destination for compressed gas supplied by opening the opening and closing valve, the opening and closing valve being provided inside a handle and opened by striking a valve rod on a hammer to supply compressed gas inside the compressed gas chamber, the switching valve being provided in a slider section or handle and switching the discharge destination of the compressed gas supplied by opening the opening and closing valve.
- That is, an automatic air gun of the related art that uses compressed carbon dioxide gas or air is known, for example, such as the air gun shown in
Fig. 22 (related art 1). - Related art one, which is an air gun of the related art, will be described in the following. Numeral 401 indicates an air gun. Operation of the
air gun 401 will be described in the following, but up to where a bullet W is supported inside arubber chamber 408 and the bullet W itself fired, from a state where anexchange valve 409 is moved to the rear of theair gun 401 against urging force of avalve spring 412 will be described. First of all, atrigger 402 for firing the bullet W is pulled. In doing so, a hammer 403 rotates in the direction shown by an arrow, and presses down avalve pin 404. By pressing down thevalve pin 404 thevalve 406 is opened, compressed gas stored in anaccumulator chamber 405 passes through thevalve 406 and flows to theslide 407 side. Theexchange valve 409 at this time blocks off acylinder 413 side so that no compressed air flows out to thecylinder 413 side. - Compressed gas that flows in to the
slide 407 side flows in to the side of a bullet W inside therubber chamber 408, pressing the bullet W out, passing through the inside of anouter barrel 410 to be fired with force from the muzzle. - After firing the bullet W, since there is no longer a bullet W in the
rubber chamber 408 theexchange valve 409 is pressed back to the muzzle side (not shown in the drawing) by the force of thevalve spring 412, flowing out of compressed gas to the muzzle side is prevented, and the cylinder side is opened. As a result, compressed gas that has been prevented from flowing out to the muzzle side flows to the inside of thecylinder 413, thecylinder 413 and theslide 407 are moved to the rear of theair gun 401 against the urging force of theslide spring 414, moving the hammer 403 rearwards, and when returned to the muzzle side, a muzzle side tip of theslide 407 presses the next bullet supplied from amagazine 411, loads the bullet into therubber chamber 408, and carries out preparation for firing of the next bullet. - Also, an
air gun 501 ofrelated art 2 shown inFig. 23 is as follows.
501 is an air gun. In the following the operation of theair gun 501 will be described, but description is from a state where a bullet W is supported inside aloading packing 508. With this second related art, anexchange valve 509 is different from that of the first related art, and in a state where a bullet W has been loaded into theloading packing 508, it is possible for compressed gas stored in anaccumulator chamber 505 to flow out to the side of a bullet W loaded in theloading packing 509 in a normal state without pressing the bullet, and no air flows out to thecylinder 513 side. Then, after firing the bullet W, in the event that compressed gas flows out rapidly to the muzzle (not shown) side, theexchange valve 509 is moved in the muzzle direction by this negative pressure, apiston block 507 side is blocked off, and thecylinder 513 is opened, moving so that compressed gas flows out to thecylinder 513 side. - First of all, the
trigger 502 is pulled in order to fire the bullet W. In doing so, ahammer 503 rotates in the direction shown by the arrow, and presses avalve rod 504. Thevalve 506 is opened as a result of thevalve rod 504 being pressed, and compressed gas stored in theaccumulator chamber 505 flows through thevalve 506 to apiston block 507 side. Inside thepiston block 507, anexchange valve 509 puts aloading packing 508 side in an open state using urging force of aspring 512, and a side end portion of theexchange valve 509 to the rear of theair gun 501 blocks of thecylinder 513 side, which means that compressed gas that has flowed to thepiston block 507 side flows to the bullet W side inside theloading packing 508, which means that the bullet W is forced out, passes inside the outer barrel 510 and is fired with force from the muzzle. - After the bullet W has been fired, since there is no longer a bullet W in the
loading packing 508 compressed gas flows rapidly to theloading packing 508 side, theexchange valve 509 is pressed back to the muzzle (not shown) side against the urging force of thevalve spring 512 by negative pressure generated by compressed gas flow, and outflow of compressed gas to the muzzle side is prevented. Accordingly, compressed gas that has been prevented from flowing out to the muzzle side flows to the inside of thepiston block 507, thepiston block 507 is moved to the rear of theair gun 501, moving thehammer 503 rearwards, and when returned to the muzzle side, a muzzle side tip of thepiston block 507 presses the next bullet supplied from amagazine 511, loads the bullet into theloading packing 508, and carries out preparation for firing of the next bullet. - As described above, the air guns of
related art 1 andrelated art 2 the next bullet is supplied by changing whether compressed gas flows from a muzzle side at an upper part of the air gun to a muzzle side inside a slide provided capable of reciprocal sliding to the rear of the gun, or flows to the rear of the gun, but an exchange valve for changing the flow path of the compressed gas is provided inside a slide capable of sliding at an upper part of the air gun. - Further, air guns of the related art using compressed gas are shown in
USP 2817328 andUSP 5476087 . With these air guns, a valve for carrying out discharge of compressed gas in order to fire a bullet, and a mechanism for carrying out bullet loading and preparation for firing of the next bullet, exist separately. - In this way, with the related art method, an opening and closing valve for supplying compressed gas, and an exchange valve or mechanism for cutting off supply of compressed air to a bullet side after the bullet has been loaded and preparing to fire a bullet, so that compressed gas is supplied in order to move a cylinder etc. to the rear of the gun, are each provided separately.
- However, with the related art method, since the opening and closing valve and the exchange valve are provided separately, there is an increase in the number of component parts, as well as it becoming difficult to miniaturize the overall structure, there is a problem that wasteful use is made of compressed gas to the extend of the volume of compressed gas passing between each of the valves, and it is difficult to unite the two to miniaturize the gun.
- In view of these problems, an object of the present invention is to reduce the size of functions of an opening and closing valve and an exchange valve to improve compressed gas usage efficiency, and to enable miniaturization of an air gun.
- The inventors of this application have also invented an air gun (related art 3) as described in the following, to solve the above described problems of the related art, and acquired a patent, namely
USP 6,026,797 , which was applied for in America on September 25th, 1998. -
American patent No. 6,026,797 shown inFig. 24 will be described in the following.
The air gun ofUSP 6,026,797 can provide a valve that is compact in function and improves usage efficiency of compressed gas. To achieve this, the air gun is constructed with a hit pin arranged in a cylinder portion, a valve body arranged within a hollow portion of the cylinder portion and having a bullet supplying nozzle chamber and a valve pin chamber, a gas inlet port opened to a sleeve-shaped circumferential face of the valve pin chamber, a bullet supplying nozzle arranged within the bullet supplying nozzle chamber, and a valve pin arranged within the valve pin chamber. The hit pin is pressed on a muzzle side and the valve pin is made to slide to the muzzle side so that an air-tight state between a valve pin flange portion and a side face of the valve pin chamber on its gun rear end side is released. A compressed gas is supplied to a nozzle chamber side opening and a valve pin chamber side opening from a clearance between the valve pin flange portion and the gun rear end side face of the valve pin chamber. - However, the air gun of
related art 3 is operated by compressed gas, and compressed gas starts to cause the slider to retreat before compressed gas starts to cause the bullet to move inside the barrel. Therefore, start of movement of the bullet and firing are delayed more than retreating movement of the slide. Because of this slide retreating, it is easy for the valve to move up and down, particularly in a downward direction, and there is a problem that shooting precision is lowered. - Also, the air gun of
related art 3 causes operation of a bullet supply nozzle using high pressure compressed gas, and as a result of repeating this operation there may be occasions when problems with durability arise. -
US 6,026,797 A , which forms a basis forindependent claims - The object of the present invention is to improve shooting precision by causing a bullet to be fired before retreating of the slide commences, which is a problem in
related art 3. This object is solved by an air gun having the features ofclaim 1 and an air gun having the features ofclaim 2. - An air gun of the present invention comprises:
- a slide, provided in an upper part of a gun, capable of sliding parallel to a barrel;
- a cylinder portion, formed of a cylinder that is open at a muzzle side and closed off at a gun rear end side, fixed to a gun rear end side of the slide;
- a hit pin provided projecting from a hollow inner portion of the cylinder portion to a gun rear end side, and capable of sliding in a nozzle direction;
- a hollow valve pin chamber fixed to the gun body so as to be positioned in the hollow inner portion of the cylinder portion;
- a valve body having a through hole passing through from a muzzle side to a gun rear end side at a smaller diameter than the valve pin chamber;
- a gas supply port, opened to a cylindrical peripheral surface of the valve pin surface, for normally supplying compressed gas to the valve pin chamber of the valve body;
- a valve pin, formed as a cylinder, provided inside the valve pin chamber, urged normally to the gun rear end side and having a bullet supply nozzle insertion section formed at a muzzle side, and inserted into the muzzle side through holes of the valve pin chamber to project, and a pin body having a valve pin flange section, capable of sliding in an air-tight state with the muzzle side through hole of the valve pin chamber, and contacting a gun rear end side surface of the valve pin in an air-tight manner at the gun rear end side, the valve pin communicating with a muzzle side providing a valve pin chamber side opening that opens to a pin body side surface at a muzzle side of a pressing section provided in the pin body; a pressing section, provided at a gun rear end side of the pin body, fixed to the valve body, inserted into rear end side through holes of the valve pin to project, positioned so that a tip end of a gun rear side is adjacent to the hit pin, and capable of passing compressed gas from a clearance between the rear end side through holes;
- a bullet feed nozzle link connected to a trigger, the bullet feed nozzle link having a muzzle side end engaging with a bullet nozzle link shaft at an upper end of the trigger and a gun rear end side being engaged with the bullet feed nozzle; and
- a bullet feed nozzle, formed as a cylinder, inserted into a bullet nozzle insertion section of a valve pin nozzle side projecting to a nozzle side of the valve pin chamber, forming a rib-shaped bullet feed nozzle link engagement projection for engaging with the bullet feed nozzle link at an outer periphery of a gun rear end side, and being capable of sliding in the valve pin muzzle side bullet feed nozzle insertion section in order to load a bullet in the chamber in response to movement of the trigger and the bullet feed nozzle link, wherein
- Alternatively, as another embodiment of an air gun, the cylinder section is provided within a gun rear end side of the slide capable of free movement, and there is no hit pin.
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Fig. 1 is a cross sectional explanatory drawing showing an initial state of an air gun of a first embodiment of this invention; -
Fig. 2 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 3 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 4 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 5 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 6 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 7 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 8 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 9 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 10 is a cross sectional explanatory drawing of an operational state of the air gun of the first embodiment of this invention; -
Fig. 11 is an enlarged partial cross sectional explanatory drawing of the air gun of the first embodiment of this invention; -
Fig. 12 is a cross section explanatory drawing showing an initial state of an air gun of a second embodiment of this invention; -
Fig. 13 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 14 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 15 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 16 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 17 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 18 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 19 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 20 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 21 is a cross sectional explanatory drawing of an operational state of the air gun of the second embodiment of this invention; -
Fig. 22 is an explanatory drawing ofrelated art 1. -
Fig. 23 is an explanatory drawing ofrelated art 2. -
Fig. 24 is an explanatory drawing ofrelated art 3. - Next, embodiments of this invention will be described based on the drawings.
Fig. 1 is a cross section explanatory drawing showing an initial state of an air gun of a first embodiment of this invention,Fig. 2 - Fig 10 are cross sectional explanatory drawings of operational states of the air gun of the first embodiment of this invention, andFig. 1 is an enlarged partial cross sectional explanatory drawing of the air gun of the first embodiment of this invention.Fig. 12 is a cross sectional explanatory drawing showing an initial state of an air gun of a second embodiment of this invention,Fig. 13 - Fig 12 are cross sectional explanatory drawings of operational states of the air gun of the second embodiment of this invention. - 1 is an air gun. The
air gun 1 is an automatic type air gun for firing a bullet W using gas pressure of compressed carbon dioxide gas, and carrying out supply of the next bullet. With this embodiment, compressed carbon dioxide gas is used, but it is also possible to cause operation using other compressed gas such as compressed nitrogen gas or compressed air. In the following, compressed carbon dioxide is the compressed gas. Also, a handle section 1a is provided in a gun rear end side lower section of the body of theair gun 1. A compressed gas cylinder A for supplying compressed gas is housed inside this handle section 1a. The compressed gas cylinder A is fitted from under the handle section 1a, and by pressing upwards using a presser screw B a seal is broken using a lower tip of a gas supply port C, which will be described later, and compressed gas is supplied from the gas supply port C. With this embodiment, the structure is such that the compressed gas cylinder A is housed inside the handle section 1a, but it can also be fitted outside the handle section 1a, or alternatively constructed so that compressed gas is supplied from a compressed cylinder fitted by a user to theair gun 1 using a hose. -
Numeral 2 is a barrel and 2a is a barrel fixing section. Thebarrel 2 is cylindrical in shape, is provided in a direction to the rear of the gun from a muzzle D, and has achamber 37 provided at a gun rear end side. Thebarrel fixing section 2a is made cylindrical and capable of being inserted into and fixing thebarrel 2, and is fixed to the body of theair gun 2 at a gun rear end side of thebarrel 2. Therefore, thebarrel 2 is fixed to the body of theair gun 1 by fixing to thebarrel fixing section 2a. -
Numeral 3 is a slide, and an opening into which thebarrel 2 can be inserted is provided in a muzzle D side of theslide 3, thebarrel 2 is passed through the opening to span from the muzzle D side to a gun rear end side, the opening is arranged parallel to thebarrel 2 so as to envelope the barrel, and is capable of sliding in parallel along thebarrel 2. Then, theslide 3 is normally urged to the muzzle D side by aslide spring 4 fitted into thebarrel 2 so that one end is supported in thebarrel fixing section 2a and the other end is supported on the muzzle side of theslide 3. Also, an engagement projection 3a projecting downwards is formed on an intermediate section of theslide 3 above thebarrel fixing section 2a, and theslide 3 is controlled so as not to move to the muzzle D side from the gun rear end side of theslide 3 by engagement with the barrel fixing section. Further, anengagement indent 3b capable of engaging with a trigger bar, which will be described later, is provided in a lower part of a gun rear end side of theslide 3. Theengagement indent 3b is a groove shape with gently sloping walls for releasing engagement with an engagedtrigger bar 26 by sliding thetrigger 23, with thetrigger bar 26, which will be described later, moving away from theengagement indent 3b while moving downwards, and moving downwards if engagement is released. Further, a muzzle sidelower section 3c for contacting the barrel fixing section of theslide 3 moves a specified amount to the gun rear end side is provided at a muzzle side lower section of theslide 3. As a result, in a state where thebarrel fixing section 2a and the muzzle sidelower section 3c are in contact, theslide 3 is in a state moved as far as possible to the gun rear end side. -
Numeral 5 is a magazine. Themagazine 5 is positioned at a gun rear end side lower section of thebarrel 2, capable of being removed from the body of theair gun 1. Then, when fitting to theair gun 1, the upper part of the magazine is provided with anopening 5b in the same direction as the opening of thebarrel 2. As shown inFig. 11 , an indent 5a defining substantially the same curved surface as the spherical surface of the bullet W is provided at an inner surface upper part of the opening of the magazine, so that it is easy to hold a fed bullet W. Also, a magazine follower 6 andmagazine spring 7 normally urging a bullet W loaded in themagazine 5 towards the upper opening are provided in an inner part of themagazine 5. The magazine follower 6 has an upper section with a spherical surface the same as a bullet W, and a lower section engages with themagazine spring 7. By making the magazine follower spherical, downward movement becomes possible even if there are no bullets loaded in the magazine and it is empty, and there is no damage even if the magazine is empty. -
Numeral 8 is a cylinder. Thecylinder 8 is formed as a cylinder closed at a gun rear end side, and is fixed to an inner wall of theslide 3 so that a muzzle D side is open at a gun rear end side of the slide. Also, at a side surface lower section of thecylinder 8, compared to another side surface, there is anotch 80 cut out to a gun rear end side.Numeral 9 is a cylindrical hit pin, with aflange section 9a that is larger in diameter than the rest of the hit pin being provided on one end. Thehit pin 9 is inserted from the muzzle side D into a through hole formed substantially in the center of a gun rear end side surface opposite an opening of the cylinder from the inner side of thecylinder 8, and projects to the gun rear end side, with theflange section 9a contacting the inner surface of thecylinder 8 and provided capable of sliding. Thehit pin 9 provided in this way is pressed by a hammer, that will be described later, and moves to the muzzle D side. - 10 is a hammer. The
hammer 10 is provided at a gun rear end side of thecylinder 8. Ahammer shaft 11 is provided so as to be freely rotatable at to a lower portion of thehammer 10 at the same time as being fixed to the body of theair gun 1, with thehammer 10 being freely rotatable about thehammer shaft 11. Ahammer strut shaft 12 capable of rotatable attachment of ahammer strut 19, which will be described later, is also provided on thehammer 10, at a gun rear end side of thehammer shaft 11. Also, ashear engagement section 13, being a projection capable of engaging with ashear 14 when an upper part of thehammer 10 has rotated to the gun rear end side, is provided on thehammer 10. -
Numeral 14 is a shear. Theshear 14 is provided close to a muzzle side of thehammer 10, with a lower end being attached to the body of theair gun 1 so as to be rotated by rotation of arotation shaft 15, with therotation shaft 15 as a center. Theshear 14 has ahammer engagement section 16 capable of engagement with theshear engagement section 13 of thehammer 10 provided at a central part, so that a rotational state of thehammer 10 is maintained in a state where the upper part of thehammer 10 has rotated to the gun rear end side. Anengagement projection 17 for engagement with atrigger bar 26, which will be described later, is provided on an upper end of theshear 14.Numeral 18 is a shear spring, arranged between the body of theair gun 1 and theshear 14, and normally urging theshear 14 to thehammer 10 side. As a result, theshear engagement section 13 of thehammer 10 and thehammer engagement section 16 of theshear 14 are maintained in an engaged state once they are engaged, and by rotating theshear 14 to the muzzle side against the urging force of theshear spring 18 using thetrigger bar 26, which will be described later, engagement is released to rotate thehammer 10 to the muzzle side. -
Numeral 19 is a hammer strut, with one rotatable end, attached to thehammer strut shaft 12 provided on a gun rear end of thehammer shaft 11, and the other end inserted into a through hole formed in a hammerstrut fixing section 20 fixed to an inner part of the handle section 1a. Ahammer spring 22 is then provided on thehammer strut 19 between theprojection section 21 provided at an intermediate part of thehammer strut 19 and the hammerstrut fixing section 20, urging thehammer 10 to the muzzle D side when it has been rotated to the gun rear end side. As a result, in the state shown inFig. 1 , thehammer 10 is positioned without being rotated, rotated to the gun rear end side as shown inFig. 3 , and in a state engaged with theshear 14 is urged to the muzzle D side. In this way by engaging theshear 14 with thehammer 10 that has been rotated to the gun rear end side, thehammer 10 stores force for rotating to the gun rear end side, and when engagement is released and thehammer 10 rotates to the muzzle D side thehammer 10 comes into contact with thehit pin 9 and thehit pin 9 becomes capable of sliding to the muzzle D side. -
Numeral 23 is a trigger. Thetrigger 23 has atrigger shaft 24 provided at a middle part of thetrigger 23 that rotates on a shaft, and is normally urged to the muzzle side by atrigger spring 25. -
Numeral 32 is a bullet feed nozzle link. The bulletfeed nozzle link 32 has a muzzle D side end engaging with a bullet feednozzle link shaft 29 at an upper end of thetrigger 23, and a gun rear end side is engaged with abullet feed nozzle 36 that will be described later. A bullet feednozzle engagement projection 51 engaging with a bullet feed nozzlelink engagement projection 52 of thebullet feed nozzle 36 is provided on rear part of the bulletfeed nozzle link 32. The bulletfeed nozzle link 32 moves to the nozzle side as a result of a user pulling thetrigger 23 to rotate thetrigger 23 about thetrigger shaft 24 against the urging of thetrigger spring 25. -
Numeral 26 is a trigger bar. Thetrigger bar 26 is arranged between thetrigger shaft 24 and the bullet feednozzle link shaft 29, and between theengagement projection 17 of theshear engagement section 13, and rotatably engages with thetrigger 23 at an upper end of thetrigger 23. If thetrigger 23 is pulled by a user, to rotate thetrigger 23 about thetrigger shaft 24 against the urging force of thetrigger spring 25, thetrigger bar 26 is moved to the muzzle side. Also, ashear projection 27 is provided on a gun rear end side of thetrigger bar 26, capable of moving theengagement projection 17 of theshear 14 to the muzzle side by moving thetrigger bar 26 to the muzzle side. Theshear projection 27 of thetrigger bar 26 constructed in this way is provided so as to position theshear 14, which means that it is it is positioned at a lower part of theslide 3. At theshear projection 27 side of thetrigger bar 26, at a position opposite to theengagement indent 3b provided at a lower part of theslide 3, anengagement projection 27a capable of engaging with theengagement indent 3b is formed. Theengagement projection 27a is capable of engaging with theengagement indent 3b, by sliding theslide 3 to the gun rear end side engagement of theengagement projection 27a with theengagement indent 3b is released to move theengagement projection 27a downwards. However, theengagement indent 3b at the lower part of theslide 3 is provided having a width capable of moving within theengagement indent 3b even if thetrigger bar 26 moves to the gun rear end side as a result of thetrigger 23 being pulled in order to fire, and with movement of thetrigger bar 26 to the gun rear end side, engagement between theengagement projection 27a and theengagement indent 3b is not released. By providing thetrigger bar 26 between thetrigger 23 and theshear 14 in this way, it becomes possible to rotate theshear 14 to the muzzle D side, and by rotating theshear 14 thehammer 10 engaged with theshear 14 is rotated to the muzzle D side. Also, if theslide 3 is slid to the gun rear end side to release engagement between theengagement projection 27a and theengagement indent 3b of theslide 3, thetrigger bar 26 is moved downwards to release engagement between theshear projection 27 of thetrigger bar 26 and theengagement projection 17 of theshear 14. In this way, if thetrigger bar 26 is moved downwards as a result of sliding theslide 3 to the gun rear end side to release the engagement between theengagement projection 27a and theengagement indent 3b, theshear projection 27 of thetrigger bar 26 will no longer be able to engage with theengagement projection 17 of theshear 14, which means that even if thetrigger bar 26 is moved to the muzzle side as a result of pulling thetrigger 23 in order to fire, since theshear 14 moves to thehammer 10 side, which is the initial position, due to the urging force of theshear spring 18, it is possible to once again cause engagement of thehammer 10 and theshear 14. -
Numeral 28 is a valve body, and 48 is a valve body rear cover. Thevalve body 28 is cylindrical in shape, with ahollow valve chamber 30 provided at an inner part, and is positioned within the hollow part of thecylinder 8 and fixed to the body of the air gun capable of sliding inside thecylinder 8. As a result, if theslide 3 moves to the gun rear end side thevalve body 28 fitted into thecylinder 8 also moves to the gun rear end side, which means that a space is formed inside thecylinder 8, if the slide is moved as far as possible to the muzzle D side direction the gun rear end side of thevalve body 28 is moved further to the muzzle D side that thenotch part 80 of thecylinder 8, and gas within the space inside thecylinder 8 formed by thevalve body 28 can be discharged from thenotch part 80 to the outside. With this embodiment,valve body 28 movement distance for the space of thevalve body 28 and the gun rear end side inner surface of thecylinder 8 is about 31 mm in a state where the muzzle sidelower part 3c of theslide 3 contacts thevalve fixing section 2a and theslide 3 is moved as far as possible to the gun rear end side (state shown inFig. 2 andFig. 9 ), but compared to this movement distance for positioning the gun rear end side of thevalve body 28 at thenotch section 80 is about 1 mm. Also, through holes of smaller diameter than thevalve pin chamber 30 are formed extending from the gun rear end side of thevalve body 28 to the muzzle side. The respectively formed through holes are called a muzzle side throughhole 31 that is formed at a muzzle side of thevalve pin chamber 30 and a rear end side throughhole 33 formed in a gun rear end side of thevalve pin chamber 30. The muzzle side throughhole 31 is formed enclosing a donut shaped ring packing 35 between a muzzle side wall of thevalve body 28 and apacking press washer 34 provided at a valve pin chamber side of the muzzle side wall of thevalve body 28. Also, the gun rear end side diameter of the rear end side throughhole 33 is a larger diameter than thehit pin 9 of thecylinder 8, and when thevalve body 28 is positioned as far as possible to the gun rear end side inside thecylinder 8 it is possible for the gun rear end side surface of thevalve body 28 to contact a gun rear end side inner surface of thecylinder 8. Still further, a gas feeding port C, being a compressed gas path for feeding from the compressed gas cylinder A housed inside the handle section 1a to thevalve body 28 is opened in a side surface lower section of thevalve pin chamber 30. - The gas feeding port C has an upper end opened to the
valve pin chamber 30, and a lower end positioned at an upper end of the compressed cylinder inserted in and fixed in the handle section 1a. There is a seal breaking pin (not shown) for breaking a seal section (not shown) provided on an upper part of the compressed gas cylinder A at a lower end of the gas feeding port C, the seal breaking pin breaks the seal of the compressed gas cylinder C by inserting and fitting the compressed gas cylinder into the handle section 1a, compressed gas passes through the gas feeding port C to be fed to thevalve pin chamber 30, and it becomes possible to normally increase gas pressure in the compressed gas to thevalve pin chamber 30. -
Numeral 36 is a bullet feeding nozzle. Thebullet feeding nozzle 36 is formed in a cylindrical shape, with a rib shaped bullet feeding nozzlelink engagement projection 52 capable of engaging with a bullet feedingnozzle engagement projection 51 being provided at a gun rear end side. Thebullet feeding nozzle 36 is arranged at a muzzle D side of thevalve body 28, a gun rear end side section is fitted into a bullet feedingnozzle insertion section 41 projecting at a muzzle side of thevalve body 28, a muzzle side end section is positioned towards a gun rear end side of an upper opening ofmagazine 5 positioned at a gun rear end side of thebarrel 2. Thebullet feeding nozzle 36 provided in this way has a muzzle D side tip part of thebullet feeding nozzle 36 press a bullet W inside anopening 5b of the magazine positioned at a muzzle D side of thevalve body 28 by moving in the muzzle D direction, and move the bullet W into achamber 37 provided at a gun rear end section of thebarrel 2. -
Numeral 39 is a valve pin. Thevalve pin 39 is cylindrical in shape, and is comprised of a gun rearside pin body 40, and a muzzle side bullet feednozzle insertion section 41. - A
pressing section 42 is provided on a gun rear end side of thepin body 40. Thepin body 40 has a muzzle D side tip fitted into a muzzle side throughhole 31, and sliding is possible while maintaining an air-tight seal between an outer periphery of thepin body 40 and a ring packing 35. The bullet feednozzle insertion section 41 connected to thepin body 40 projects to the muzzle side of thevalve body 28. Also, thepin body 40 is arranged so that the connected pressingsection 42 is inserted into the rear end side throughhole 33 to position a gun rear end side tip part of thepressing section 42 adjacent to thehit pin 9. It is then possible for thepressing section 42 to slide in a state where compressed gas cam pass between thepressing section 42 and the rear end side throughhole 33. A valvepin flange section 43 contacting the gun rear end side side surface of thevalve pin chamber 30 is provided at a gun rear end side of thepin body 40, having a smaller diameter than the inner diameter of thevalve pin chamber 30. The valvepin flange section 43 and the gun rear end side side surface of thevalve pin chamber 30 are then brought into contact to give an airtight state. With this embodiment, aflat packing 47 formed in a ring shape is arranged at a gun rear end side side surface of thevalve pin chamber 30 that contacts the valvepin flange section 43.Numeral 44 is a valve pin return spring, and the valvepin return spring 44 is a coil spring, with thepin body 40 inserted into it, provided between the valvepin flange section 43 of thepin body 40 and the muzzle side throughhole 31, and normally urging thepin body 40 to the gun rear end side. The gun rear end side side surface of thevalve pin chamber 30 and the valvepin flange section 43 are caused to maintain a sealed state by the urging force of the valvepin return spring 44. Also, apassage 45 opening to the muzzle side is provided in a cylindrical section of thepin body 40 provided as described above, and a valve pin chamber opening 46 opening to the side surface of thepin body 40 is provided at a muzzle side of thepressing section 42, enabling through flow of compressed gas. - By providing the
valve pin 39 in thevalve pin chamber 30 of thevalve body 28 in this way, if thevalve pin 39 is pressed against thehammer 10, pressed against thehit pin 9 that has moved to the muzzle D side, and moved to the muzzle D side, a clearance is formed between the valvepin flange section 43 of thepin body 40 and the gun rear end side side surface of thevalve pin chamber 30, compressed gas normally supplied to thevalve pin chamber 30 passes from the clearance formed by the gun rear end side side surface of thevalve pin chamber 30 and the valvepin flange section 43 through the valve pin side opening 46 of thepin body 40 and thepassage 45, is supplied to the muzzle D side opening of thebullet feeding nozzle 36 and fires the bullet W inside thechamber 37. - Next, a second embodiment relating to claim 2 of the invention will be described below, but only those parts of the structure that are different from the structure of the first embodiment described above are described.
- A
cylinder section 8a of this second embodiment of the invention is cylindrical in shape closed at a gun rear end side, provided so as to be capable of movement at an inner wall of aslide 3 so as to open the muzzle D side at a gun rear end side of theslide 3, and differs from the first embodiment in that there is nohit pin 9. - A
pressing section 42a of the second embodiment is provided at a gun rear end side of thepin body 40, fixed to thepin body 40, inserted into the rear end side throughhole 33 of thevalve pin 39 to project to the gun rear side, and has a gun rear side tip end positioned capable of contacting a muzzle side inner surface of a rear wall of thecylinder section 8a. Thepressing section 42a is capable of sliding in a state where compressed gas can pass from a clearance between the outer peripheral surface of thepressing section 42a and the rear end side throughhole 33. - When the
cylinder section 8a is pressed to the muzzle D side by thehammer 10 and slides to the muzzle D side, thepressing section 42a is pressed against a muzzle side inner surface of a rear wall of thecylinder section 8a, thevalve pin 39 slides to the muzzle D side against the urging force, and an airtight state between the valvepin flange section 43 and a gun rear end side side surface of thevalve pin chamber 30 is released. - As a result, compressed gas supplied from the gas supply port C to the
valve pin chamber 30 is supplied from between the gun rear end side side surface of thevalve pin chamber 30 and the valvepin flange section 43 to the valve pinchamber side opening 46, through the bullet feednozzle insertion section 41 and is supplied to the muzzle D side of thebullet feeding nozzle 36 to fire a bullet W from the muzzle. At the same time, compressed gas supplied from the valve pinchamber side opening 46 is supplied from a clearance between thepressing section 42a and the rear end side throughhole 33 into which thepressing section 42a is inserted to the gun rear end side, causing thecylinder section 8a to move to the gun rear end side. - Next, operation of the first embodiment configured as described above will be described based on
Fig. 1 to Fig. 11 , and operation of the second embodiment configured as described above will be described based onFig. 12 to Fig. 21 . - The states shown in
Fig. 1 andFig. 12 are the basic position before operation of theair gun 1. In the basic position, theair gun 1 has the hammer rotated to the gun rear end side, in a state where the hit pin is not being pressed, and also, the compressed gas cylinder A is already housed inside the handle section 1a, and has a seal broken by the gas supply port C, with compressed gas then being supplied from the compressed gas cylinder A through the gas supply port C to inside thevalve pin chamber 30 of thevalve body 28. Also, bullets W are already loaded in themagazine 5, urged upwards by themagazine spring 7 and the magazine follower 6, with the first bullet W being positioned in an indent 5a of theopening 5b. - The inside of the
valve pin chamber 30 of thevalve body 28 is already full of compressed gas, and gas pressure of the compressed gas acts uniformly on the inner wall of thevalve pin chamber 30 and an outer surface of thepin body 40 exposed to the inside of thevalve pin chamber 30, but the force of compressed gas acting on thepin body 40 does not drive thevalve pin 39 in a direction to move to the muzzle D side, and thevalve pin 39 is urged to the gun rear end side by the valvepin return spring 44 so that valvepin flange section 43 contacts the gun rear end side inner surface of thevalve pin chamber 30 in an air tight manner, which means that thevalve pin 39 maintains an airtight state of contact between the valvepin flange section 43 and the gun rear end side inner surface of thevalve pin chamber 30, and compressed gas does not move from thevalve pin chamber 30 to the outside. - When using the
air gun 1, as shown inFig. 2 andFig. 13 , theslide 3 is moved to the gun rear end side against the urging force of theslide spring 4. In doing so, thecylinder slide 3 are also moved to the gun rear end side. At this time, thehit pin 9 also moves together with theslide 3 to the gun rear end side, but thevalve body 28 does not move. Also, since thevalve pin 39 also does not move, compressed gas remains inside the valve pin chamber. If thecylinder cylinder hammer 10 by the extent of that movement at the rearlower end 50 of thecylinder hammer 10 is rotated to the gun rear end side against urging force due to thehammer strut 19 and thehammer spring 22. At this time, theengagement projection 27a comes away from theengagement indent 3b of theslide 3, is moved downwards by a lower surface of theslide 3 and engagement with theshear 14 is released, which means that regardless of whether thetrigger 23 is pulled or not pulled, theshear 14 is positioned at the same initial position at thehammer 10 side as inFig. 1 andFig. 12 . If theslide 3 is subsequently moved as far as possible to the gun rear end, the muzzle sidelower section 3c of theslide 3 comes into contact with the muzzle side lower part of the barrel fixing section and can no longer move to the gun rear end side, movement of theslide 3 is completed, and theslide 3 is returned to the same position asFig. 1 andFig. 12 . -
Fig. 3 andFig. 14 show the state where theslide 3 has been returned. Thehammer 10 has theshear engagement section 13 engaged withhammer engagement section 16 of theshear 14, and is fastened in a state rotated to the gun rear end side against urging force die to thehammer spring 22. Thecylinder Fig. 1 andFig. 12 . Since thecylinder trigger bar 26 also moves upwards with theengagement projection 27a engaged with theengagement indent 3b of theslide 3. - Next, as shown in
Fig. 4 andFig. 15 , the user moves thetrigger 23 to the gun rear end side as shown by the arrows in order to fire. In accompaniment with rotation of thetrigger 23 to the rear, thetrigger bar 26 and the bulletfeed nozzle link 32 move to the muzzle D direction. As a result of movement of the bulletfeed nozzle link 32, thebullet feed nozzle 36 moves to the muzzle D side by the bullet feed nozzlelink engagement projection 52 for engaging with the bullet feednozzle engagement projection 51, the bullet W at the uppermost position inside themagazine 5 is pushed out from theopening 5b, and loaded inside the chamber 37.Since thebullet feed nozzle 36 is above, the next bullet W inside themagazine 5 can not rise up to the loadable position. - Also, as a result of movement of the
trigger bar 26 to the muzzle D side, in the state ofFig. 4 andFig. 15 there is engagement between theshear engagement section 27 of thetrigger bar 26 and theengagement projection 17 of theshear 14, which means that theshear engagement section 27 of thetrigger bar 26 causes theengagement projection 17 of theshear 14 to rotate in the muzzle D direction, and theshear 14 rotates to the muzzle D side against the urging force of theshear spring 18. Because theshear 14 has been rotated, as shown inFig. 5 andFig. 16 , engagement between thehammer engagement section 16 of theshear 14 and theshear engagement section 13 of thehammer 10 is released, and thehammer 10 is rotated to the muzzle D direction by the urging force. - With the first embodiment, as shown in
Fig. 6 , thehammer 10 presses thehit pin 9. With the second embodiment, as shown inFig. 17 , thehammer 10 presses the rear section rear surface of thecylinder 8a. As a result of thehit pin 9 or thecylinder 8a being pressed to move to the muzzle D side, the valve pin positioned at the muzzle D side of thehit pin 9 or thecylinder 8a is pressed against the rear inner surface of thehit pin 9 or thecylinder 8a and moved to the muzzle D side against the urging force of the valvepin return spring 44. - If the
valve pin 39 is moved to the muzzle D side, the valvepin flange section 43 of thevalve pin 39 is also moved to the muzzle D side, contact of the airtight state between the gun rear end side inner wall of thevalve pin chamber 30 and the valvepin flange section 43 is released, compressed air that has been supplied to thevalve pin chamber 30 passes through a clearance made possible between the gun rear end side inner wall of thevalve pin chamber 30 and the valvepin flange section 43, and supplied into apin body 40 from a valve pin chamber side provided on thepin body 40 of thevalve pin 39. Compressed gas supplied to the inside of thepin body 40 passes through thepassage 45, and also through the throughhole 36a of thebullet feed nozzle 36, to fire the bullet W loaded inside thechamber 37. At the same time, with the first embodiment, compressed gas flows out from aclearance 49 between thepressing section 42 continuously fixed to the gun rear end side of thepin body 40 and the rear end side throughhole 33 of thevalve body 28 to thehit pin 9 side. - Also, with the second embodiment, at the same time from a
clearance 49 between thepressing section 42 continuously fixed to the gun rear end side of thepin body 40 and the rear end side throughhole 33 of thevalve body 28 to the rear inner surface side of thecylinder 8a. -
Fig. 11 is an enlarged explanatory drawing of the area around the pressing section 42.Inflow of compressed gas continues further, the gun rear end side inner surfaces of thecylinder clearance 49 between thepressing section hole 33 to the gun rear end side, a space is formed at the gun rear end side inside thecylinder valve body 28, and the formed space can be expanded by gas pressure of compressed gas flowing in. This state is shown inFig. 7 andFig. 18 . At this time, since thevalve body 28 is inside the body of theair gun 1, thecylinder slide 3 to which thecylinder 8 is fixed is also moved to the gun rear end side. In the state shown inFig. 7 andFig. 18 , the rearlower end side 50 of thecylinder hammer 10 to the gun rear end side. Also, since theslide 3 slides to the gun rear end side, theengagement projection 27a of thetrigger bar 26 is released from engagement with the engagement indent of the lower section of theslide 3 to contact the lower end of theslide 3 to move downwards, and engagement between thetrigger bar 26 and theshear 14 is released. Also, with the first embodiment, since thecylinder 8 has moved to the gun rear end direction, thehit pin 9 releases pressing pressure of thepressing section 42 of thevalve pin 39, while with the second embodiment, since thecylinder 8a has moved to the gun rear end direction thecylinder 8a releases pressing pressure of thepressing section 42a of thevalve pin 39, thevalve pin 39 is subsequently pressed back to the gun rear end side by the urging force of the valvepin return spring 44. - The state where the
valve pin 39 has been returned to the gun rear end side is shown inFig. 8 andFig. 19 . The valvepin flange section 43 of thevalve pin 39 and the gun rear end side inner surface of thevalve pin chamber 30 are in an airtight state, and supply of compressed gas to the inside of thevalve pin 39 is completed. Even if supply is cut off, since compressed gas already supplied to the inside of the space of the gun rear end side inside thecylinder 8 continues expansion, thecylinder slider 3 continue to move further to the gun rear end side as a result of this expansion force and the inertia of thecylinder slide 3. If theslide 3 subsequently move as far as possible to the gun rear end side and the hammer rotates to the gun rear end side, thehammer 10 again engages with theshear 14. This state is shown inFig. 9 andFig. 20 . - In the state shown in
Fig. 9 andFig. 20 , thecylinder slide 3 are also moved as far as possible to the gun rear end side due to contact of the muzzle sidelower section 3c with thebarrel fixing section 2a, and gas is discharged from a clearance formed between a gun rear end side lower part of thevalve body 28 and anotch 80 of thecylinder 8. - Engagement between the
engagement projection 27a and theengagement indent 3b of theslide 3 is released and thetrigger bar 26 comes into contact with the lower part of theslide 3, causing downward movement, and theengagement projection 17 of the shear and theshear projection 27 of thetrigger bar 26 are not engaged. Theshear engagement section 13 of thehammer 10 and thehammer engagement section 17 of theshear 14 are once again positioned at the engagable position. - Then, since the
slide 13 has been moved as far as possible to the gun rear end side, it is again returned to the muzzle D side by the urging force of theslide spring 4. The state where theslide 3 has been returned to the muzzle D side is shown inFig. 10 andFig. 21 . - From the state shown in
Fig. 3 andFig. 14 , thetrigger 23 is pulled to fire the gun, the movedslide 3 moves to the gun rear end side, a successful operation to return again to the state ofFig. 10 andFig. 21 is instantly carried out, and in the state ofFig. 10 andFig. 21 thetrigger 23 has again been pulled to the gun rear end side. As a result, since thebullet feed nozzle 36 being moved in the muzzle D direction by the bulletfeed nozzle link 32 is blocking theopening 5b of themagazine 5, the next bullet W inside themagazine 5 can not be raised to the loadable position. Also, theengagement projection 27a of thetrigger bar 26 has already reached the lower part of theengagement indent 3b of theslide 3, but theshear engagement section 27 of thetrigger bar 26 is positioned at a lower part of the engagement projection of theshear 14, and can not move upwards. - In this state, of the user takes their finger off the
trigger 23, thetrigger 23 is returned to the muzzle D side by urging force of thetrigger spring 25, and the bulletfeed nozzle link 32 linked to thetrigger 23 moves to the gun rear end side. The bullet feed nozzle engagement section for to the bulletfeed nozzle link 26 is also moved to the gun rear end side. Therefore, the bullet feed nozzlelink engagement projection 52 being engaged with the bullet feednozzle engagement projection 51, and thebullet feed nozzle 36, also move to the gun rear end side. Theopening 5b of themagazine 5 is opened by rearward movement of thebullet feed nozzle 36, and it is possible to load the next bullet W into thechamber 37. - At the same time, the
trigger bar 26 is moved to the gun rear end side and theshear engagement projection 27 is moved to the gun rear end side by theengagement projection 17 of theshear 14, making it possible for thetrigger bar 26 to move upwards, moving upwards by the urging force of thetrigger spring 25, with theengagement projection 27a engaging with theengagement indent 3b of theslide 3. This state is shown inFig. 3 andFig. 14 . Naturally, the bullet W is loaded in the magazine will be the next bullet, but preparing for the state firing the next bullet W, by pulling thetrigger 23 the operations shown inFig. 3 to Fig. 10 and inFig. 12 to Fig. 21 are repeated, firing the next bullet, and also preparing for firing of the subsequent bullet. - In this way, By pulling the
slide 3 to the gun rear end side from the state ofFig. 1 andFig. 12 , in the state where thehammer 10 has been rotated to the gun rear end side it engaged with the sear 14, and after that, it is possible to sequentially fire bullets W by pulling thetrriger 23. - Therefore, according to the air gun of the present invention, it is possible to carry out firing of a bullet before rearward movement of the slide starts. For this reason, since a bullet is fired before the barrel is subjected to any effect due to rearward movement of the slide, shooting precision is improved.
Also, the air gun of the present invention has a bullet feed nozzle that is operated manually, and high pressure gas does not act on the nozzle, which means that durability is improved.
compressed gas supplied from the valve pin chamber side opening is supplied from a clearance between the pressing section and through holes into which the pressing section is inserted to the gun rear end side to cause the cylinder section to move to the gun rear end side.
Claims (2)
- An air gun (1), comprising:a slide (3), provided in an upper part of the gun (1), capable of sliding parallel to a barrel (2);a cylinder portion, formed of a cylinder (8) that is open at a muzzle side (D) and closed off at a gun rear end side, fixed to a gun rear end side of the slide (3);a hit pin (9) provided projecting from a hollow inner portion of the cylinder portion to a gun rear end side, and capable of sliding in a nozzle direction;a hollow valve pin chamber (30) fixed to the gun body so as to be positioned in the hollow inner portion of the cylinder portion;a valve body (28) having a through hole (31, 33) passing through from a muzzle side (D) to a gun rear end side at a smaller diameter than the valve pin chamber (30);a gas supply port (C), opened to a cylindrical peripheral surface of the valve pin surface, for supplying compressed gas to the valve pin chamber (30) of the valve body (28);a valve pin (39), formed as a cylinder, provided inside the valve pin chamber (30), urged normally to the gun rear end side and having a bullet supply nozzle insertion section (41) formed at a muzzle side (D), and inserted into the muzzle side through holes (31) of the valve pin chamber (30) to project, and a pin body (40) having a valve pin flange section (43), capable of sliding in an air-tight state with the muzzle side through hole (31) of the valve pin chamber (30), and contacting a gun rear end side surface of the valve, pin (39) in an air-tight manner at the gun rear end side, the valve pin (39) communicating with a muzzle side (D) providing a valve pin chamber side opening (46) that opens to a pin body side surface at a muzzle side (D) of a pressing section (42) provided in the pin body (40), wherein the pin body (40) is inserted into a valve pin return spring (44) which is provided between the valve pin flange section (43) of the pin body (40) and the muzzle side through hole (31), and normally urging the pin body (40) to the gun rear end side, wherein the side surface of the gun rear end side of the valve pin chamber (30) and the valve pin flange section (43) are caused to maintain a sealed state by the urging force of the valve pin return spring (44), and wherein a passage (45) opening to the muzzle side is provided in a cylindrical section of the pin body (40), and a valve pin chamber opening (46) opening to the side surface of the pin body (40) is provided at a muzzle side of the pressing section (42), enabling though flow of compressed gas;a pressing section (42), provided at a gun rear end side of the pin body (40), fixed to the valve body (28), inserted into rear end side through holes (33) of the valve pin (39) to project, positioned so that a tip end of a gun rear side is adjacent to the hit pin (9), and capable of passing compressed gas from a clearance between the rear end side through holes (33);a bullet feed nozzle link (32) connected to a trigger (23), the bullet feed nozzle link (32) having a muzzle side (D) end engaging with a bullet feed nozzle link shaft (29) at an upper end of the trigger (23) and a gun rear end side being engaged with a bullet feed nozzle (36); andsaid bullet feed nozzle (36), formed as a cylinder, inserted into a bullet nozzle insertion section (41) of a valve pin nozzle side projecting to a nozzle side of the valve pin chamber (30), forming a rib-shaped bullet feed nozzle link engagement projection (52) for engaging with a bullet feed nozzle engagement projection (51) of the bullet feed nozzle link (32), the bullet feed nozzle engagement projection (51) being provided on a rear part of the bullet feed nozzle link (32), wherein the bullet feed nozzle link (32) is adapted to move to the nozzle side as a result of a user pulling the trigger (23) to rotate the trigger (23) about the trigger shaft (24) against the urging of the trigger spring (25), the bullet feed nozzle link engagement projection (52) being capable of sliding in the valve pin muzzle side bullet feed nozzle insertion section (41) in order to load a bullet in the chamber in response to movement of the trigger (23) and the bullet feed nozzle link (32), wherein when the hit pin (9) is pressed to the muzzle side (D) and made to slide to the muzzle side (D), the valve pin (39) slides to the muzzle side (D) against urging force to release an airtight state between the valve pin flange section (43) and the side surface of the valve pin chamber (30) on its gun rear end side, compressed gas supplied to the valve pin chamber (30) from the gas supply port (C) is supplied from between the side surface of the valve pin chamber (30) on its gun rear end side and the valve pin flange section (43) to the valve pin chamber side opening (46), and a bullet is fired from the muzzle by passing compressed gas through the bullet feed nozzle insertion section (41) and supplying to the muzzle side (D) of the bullet feed nozzle (36), andcompressed gas supplied from the valve pin chamber side opening (46) is supplied from a clearance between the pressing section (42) and valve pin rear end side through holes into which the pressing section (42) is inserted to the gun rear end side to cause the cylinder section to move to the gun rear end side.
- An air gun (1), comprising:a slide (3), provided in an upper part of the gun (1), capable of sliding parallel to a barrel (2);a cylinder portion, formed of a cylinder that is open at a muzzle side (D) and closed off at a gun rear end side, provided in a gun rear end side of the slide (3) capable of free movement;a hollow valve pin chamber (30) fixed to the gun body so as to be positioned in the hollow inner portion of the cylinder portion;a valve body (28) having a through hole (31, 33) passing through from a muzzle side (D) to a gun rear end side at a smaller diameter than the valve pin chamber (30);a gas supply port (C), opened to a cylindrical peripheral surface of the valve pin surface, for supplying compressed gas to the valve pin chamber (30) of the valve body (28);a valve pin (39), formed as a cylinder, provided inside the valve pin chamber (30), urged normally to the gun rear end side and having a bullet supply nozzle insertion section (41) formed at a muzzle side (D), and inserted into the muzzle side through holes (31) of the valve pin chamber (30) to project, and a pin body (40) having a valve pin flange section (43), capable of sliding in an air-tight state with the muzzle side through hole (31) of the valve pin chamber (30), and contacting a gun rear end side surface of the valve pin (39) in an air-tight manner at the gun rear end side, the valve pin (39) communicating with a muzzle side (D) providing a valve pin chamber side opening (46) that opens to a pin body side surface at a muzzle side (D) of a pressing section (42) provided in the pin body (40);a pressing section (42), provided at a gun rear end side of the pin body (40), fixed to the valve body (28), inserted into rear end side through holes of the valve pin (39) to project, positioned so that a tip end of a gun rear side is capable of contacting a muzzle side inner surface of the cylinder section, and capable off passing compressed gas from a clearance between the rear end side through holes (33);a bullet feed nozzle link (32) connected to a trigger (23), the bullet feed nozzle link (32) having a muzzle side (D) end engaging with a bullet feed nozzle link shaft (29) at an upper end of the trigger (23) and a gun rear end side being engaged with the bullet feed nozzle (36), anda bullet feed nozzle (36), formed as a cylinder, inserted into a bullet nozzle insertion section (41) of a valve pin nozzle side projecting to a nozzle side of the valve pin chamber (30), forming a rib-shaped bullet feed nozzle link engagement projection (52) for engaging with the bullet feed nozzle link (32) at an outer periphery of its gun rear end side, and being capable of sliding in the valve pin muzzle side bullet feed nozzle insertion section (41) in order to load a bullet in the chamber in response to movement of the trigger (23) and the bullet feed nozzle link (32), whereinwhen the cylinder section is pressed to the muzzle side (D) and made to slide to the muzzle side (D), the pressing section (42) is pressed to a muzzle side inner surface of a cylinder section rear wall, the valve pin (39) slides to the muzzle side (D) against urging force to release an airtight state between the valve pin flange section (43) and the side surface of the valve pin chamber (30) on its gun rear end side, compressed gas supplied to the valve pin chamber (30) from the gas supply port (C) is supplied from between the valve side surface of the valve pin chamber (30) on its gun rear end side and the valve pin flange section (43) to the valve pin chamber side opening (46), and a bullet is fired from the muzzle by passing compressed gays through the bullet feed nozzle insertion section (41) and supplying to the muzzle side (D) of the bullet feed nozzle (36), andcompressed gas supplied from the valve pin chamber side opening (46) is supplied from a clearance between the pressing section (42) and valve pin rear end side through holes into which the pressing section (42) is inserted to the gun rear end side to cause the cylinder section to move to the gun rear end side.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200560010534 DE602005010534D1 (en) | 2005-01-04 | 2005-01-04 | Pressurized gas weapon |
EP20050000073 EP1677066B1 (en) | 2005-01-04 | 2005-01-04 | Air gun |
TW94144557A TWI270652B (en) | 2005-01-04 | 2005-12-15 | Air gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20050000073 EP1677066B1 (en) | 2005-01-04 | 2005-01-04 | Air gun |
Publications (2)
Publication Number | Publication Date |
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EP1677066A1 EP1677066A1 (en) | 2006-07-05 |
EP1677066B1 true EP1677066B1 (en) | 2008-10-22 |
Family
ID=34933202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050000073 Active EP1677066B1 (en) | 2005-01-04 | 2005-01-04 | Air gun |
Country Status (3)
Country | Link |
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EP (1) | EP1677066B1 (en) |
DE (1) | DE602005010534D1 (en) |
TW (1) | TWI270652B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200909766A (en) | 2007-08-28 | 2009-03-01 | Maruzen Co Ltd | Magazine ejector structure for air gun |
JP2011231979A (en) | 2010-04-28 | 2011-11-17 | Maruzen:Kk | Toy gun |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5509399A (en) * | 1995-01-12 | 1996-04-23 | Poor; Keith A. | Semi-automatic fluid powered gun |
DE19542332C1 (en) * | 1995-11-14 | 1997-05-28 | Umarex Gmbh & Co Kg | Pressurized gas firearm |
US5884615A (en) * | 1996-11-20 | 1999-03-23 | Industrias El Gamo, S.A. | Dual mode ammunition loading air or gas-powered gun |
US6026797A (en) | 1998-09-25 | 2000-02-22 | Maruzen Company Limited | Air gun |
ES2233149B1 (en) * | 2002-11-25 | 2006-10-16 | Industrias El Gamo, S.A. | COMPRESSED GAS GUN. |
-
2005
- 2005-01-04 DE DE200560010534 patent/DE602005010534D1/en active Active
- 2005-01-04 EP EP20050000073 patent/EP1677066B1/en active Active
- 2005-12-15 TW TW94144557A patent/TWI270652B/en active
Also Published As
Publication number | Publication date |
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EP1677066A1 (en) | 2006-07-05 |
DE602005010534D1 (en) | 2008-12-04 |
TW200624765A (en) | 2006-07-16 |
TWI270652B (en) | 2007-01-11 |
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