EP2151660A1 - Pistolet pneumatique avec mécanisme de refoulement - Google Patents

Pistolet pneumatique avec mécanisme de refoulement Download PDF

Info

Publication number
EP2151660A1
EP2151660A1 EP08014231A EP08014231A EP2151660A1 EP 2151660 A1 EP2151660 A1 EP 2151660A1 EP 08014231 A EP08014231 A EP 08014231A EP 08014231 A EP08014231 A EP 08014231A EP 2151660 A1 EP2151660 A1 EP 2151660A1
Authority
EP
European Patent Office
Prior art keywords
valve
rear end
valve body
barrel
discharge valve
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.)
Granted
Application number
EP08014231A
Other languages
German (de)
English (en)
Other versions
EP2151660B1 (fr
Inventor
Tetsuo Maeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maruzen Co Ltd
Original Assignee
Maruzen Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maruzen Co Ltd filed Critical Maruzen Co Ltd
Priority to EP20080014231 priority Critical patent/EP2151660B1/fr
Publication of EP2151660A1 publication Critical patent/EP2151660A1/fr
Application granted granted Critical
Publication of EP2151660B1 publication Critical patent/EP2151660B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 a bullet and performing blowback using compressed gas, and having a mechanism for both firing a bullet and performing blowback with energy supplied from compressed gas. More specifically, the structure of the air gun is more simplified compared to air guns having conventional blowback mechanisms and the air gun has a blowback mechanism that shoots a bullet and performs blows-back more effectively.
  • a mechanism of a conventional air gun that shoots a bullet and performs blowback by compressed gas includes a magazine, a compressed air source, a slide, a cylinder, an inner barrel, a barrel body, and trigger.
  • a valve pin is provided in a valve body air chamber that is a space containing compressed gas in the valve body.
  • a hit pin is provided in a gun rear end side of the valve pin. The hit pin has a hammer that rotates backward by the action of the trigger. The hammer that rotates by the action of the trigger hits the hit pin to move the hit pin and valve pin towards the muzzle side of gun, causing the gas in the valve body air chamber to spout onto the valve pin to shoot a bullet and perform blowback.
  • a US patent, USP 7,353,816 (Related Art 3) is a divisional application of the Related Art 2 and has become common knowledge.
  • a gun has a structure where a cylinder that is provided in a gun rear end side of the slide capable of free movement, has a hammer and no hit pin.
  • an air gun with a blowback mechanism disclosed in the Related Art 1 to 4 at least has a hammer at the rear end of the gun.
  • the hammer rotates by a trigger bar or a shear that transmits the movement of the trigger, hits a hit pin from behind and moves the hit pin and valve pin from the muzzle side of the gun to eject the gas in the valve body air chamber to the valve pin for firing a bullet and performing blowback.
  • an air gun with a blowback mechanism has members such as a hammer, a shear, a trigger bar, a bullet supplying nozzle, a bullet supplying nozzle link and their fittings, making the structure complicated.
  • the members move every time a bullet is fired so that members are likely to be worn, and the air gun is easily damaged and likely to have problems with durability.
  • compressed gas functions as a force to press the cylinder backward, then compressed gas starts applying power on a bullet on the muzzle side.
  • a bullet is fired while the cylinder is retreating, and shooting a bullet during the retreat of the cylinder decreases the grouping on a target.
  • an object of this invention is to provide an air gun comprising a magazine, a compressed gas source, a slide, a cylinder, an inner barrel, a valve body, a trigger and a mechanism that shoots a bullet using compressed gas and performs blowback
  • the valve body is provided with a space that is a valve body air chamber capable of being supplied with compressed gas from a compressed gas source and being sealed to contain the compressed gas and a discharge valve that can move from the muzzle side to the gun rear end side in the valve body air chamber
  • the discharge valve is provided with a valve through hole extending from the muzzle side to the gun rear end side and a gas supply port that opens and closes the valve body air chamber and the valve through hole by movement from the muzzle side to the gun rear end side
  • a blowback mechanism is provided, which moves the discharge valve towards the gun rear end side by the retreat of the inner barrel so that the gas supply port of the discharge valve opens to eject compressed gas to the valve through hole from the valve body air chamber for shooting a
  • an air gun comprising a magazine, a compressed gas source, a slide, a cylinder, an inner barrel, a valve body, a barrel latch, a trigger, and a mechanism that shoots a bullet by compressed gas and performs blowback
  • the valve body is provided with a space that is a valve body air chamber capable of being supplied with compressed gas from a compressed gas source and being sealed to contain the compressed gas and a discharge valve that can move from the muzzle side to the gun rear end side in the valve body air chamber
  • the discharge valve is provided with a valve through hole extending from the muzzle side to the gun rear end side and a gas supply port that opens and closes the valve body air chamber and the valve through hole by the movement from the muzzle side to the gun rear end side
  • a pin through hole positioned on the muzzle side of the discharge valve that extends from the muzzle side to the gun rear end side is provided, a hit pin that can move from the muzzle side to the gun rear end side and move the discharge valve
  • the present invention eliminates the need for members such as a hammer, a shear, a trigger bar, a bullet supplying nozzle, a bullet supplying link and fittings that were conventionally used for air guns with a blowback mechanism, and the number of parts is decreased compared to the Related Art, reducing the cost of manufacturing and problems, and improving durability of an air gun.
  • an air gun with a conventional blowback mechanism becomes ready to shoot a bullet by rotating a hammer through retreat of a slide.
  • the retreat energy of a slide is smaller than the Related Art because a hammer is not rotated when a slide is retreated so that compressed gas can be used more effectively.
  • compressed gas according to the present invention can shoot a bullet before retreating a cylinder, different from the Related Art 1. Consequently, an air gun does not move because of retreat of a cylinder, and grouping is rarely affected to improve performance of the air gun.
  • FIGS. 1 to 9 are front section explanatory drawings showing one cycle of actions until shooting of a bullet from an air gun
  • Figs. 10 to 18 that are enlarged front cutaway sections of essential parts
  • Figs. 19 to 23 that are the discharge valve used in the air gun of the present invention
  • Fig. 24 to 26 that show the relationships among the inner barrel, the barrel housing and the barrel latch.
  • Fig. 1 is a front cutaway section showing the overall structure of an air gun with a blowback mechanism according to an embodiment of the present invention, with a magazine containing bullets and a cylinder containing compressed gas inserted into the air gun.
  • An air gun according to an embodiment of the present invention is an automatic air gun that shoots a bullet W using gas pressure of compressed carbon dioxide gas while performing blowback and loading of the next bullet.
  • compressed dioxide gas is used.
  • the gun may be operated by other compressed gases such as compressed nitrogen gas and compressed air.
  • compressed dioxide gas is called compressed gas in this embodiment.
  • a frame (grip) 2 is provided at the bottom of the gun rear end side of the air gun main body 1.
  • the frame 2 contains a replacable gas cylinder A that is a compressed gas source supplying compressed gas.
  • An accumulator may be provided in the frame 2 as a compressed gas source other than an accumulator cylinder A.
  • the gas cylinder A is inserted from the side of the frame 2 and pressed upward by a cap screw so that a gas supplying port C at the upper end is opened and the compressed gas is supplied to a valve body air chamber 17a via a gas passage 18.
  • the gas cylinder A of compressed gas is contained in the frame 2.
  • the gas cylinder A may be attached to the outside of the frame 2 or gas may be supplied from a gas cylinder worn by a user to the air gun main body 1 via hose, etc.
  • the major parts of the air gun of the present invention include an air gun main body with a frame 2 (grip) at the back side, a magazine 15 detachable to and from the frame 2, an inner barrel 5 that is a bullet path, an outer barrel 4 provided outside the inner barrel, a slide 3 slidably provided parallel to the outer barrel 4, a cylinder 23 fixed to the inside of the gun rear end side of the slide 3, a chamber 11 provided at the gun rear side of the barrel 5, a valve body 17 with a hollow valve body air chamber 17a provided between a chamber 11 and cylinder 23, a discharge valve 19 provided in the valve body air chamber 17a, a hit pin 22 provided between the inner barrel 5 and the discharge valve 19, and barrel latch 9 operated by a trigger 13.
  • the slide 3 can be slid along the outer barrel 4 and is biased on the muzzle side by the tensile force of a recoil spring 12.
  • the inner barrel 5 is provided inside the outer barrel 4, both of which are cylindrical.
  • a barrel housing 8 is fixed in an integrated manner close to the center of the longitudinal direction of the inner barrel 5, can be freely slid along the outer barrel 4, and is biased towards the gun rear end side by the barrel spring 6.
  • a barrel latch 9 is rotatably provided on the barrel housing 8 centering on the barrel latch rotational axis 9c. The uniform barrel latches 9 are attached to the two sides of the barrel housing 8 and the inner barrel 5 (Refer to Figs. 24 to 26 ).
  • a barrel spring washer 7 is provided at the muzzle side of the barrel housing 8 and abuts on the gun rear end side of the barrel spring 6.
  • the barrel spring 6 and barrel spring washer 7 are slidably provided between the tip of the muzzle side of the inner barrel 5 and the side of the muzzle of the barrel housing 8.
  • the barrel spring washer 7 forms the lower part as a frame locking part 7a.
  • the frame locking part 7a abuts on a barrel spring washer retreat stop part 2b to stop retreat of the barrel.
  • the lower part of the barrel latch 9 is biased to the muzzle side in the barrel housing 8 by the barrel latch spring 10.
  • the gun rear end side is downwardly biased centering on the barrel latch rotational axis 9c.
  • the barrel latch 9 is locked when the barrel housing locking part 9b formed at the gun rear end side of the barrel latch 9 abuts against the barrel latch locking part 8a of the barrel housing 8.
  • the barrel latch 9 and the trigger abutment 9a formed on the gun rear end side lock and release the lock of the trigger upper top 13b and trigger 13.
  • the chamber 11 is a cylindrical space positioned between the rear end of the inner barrel 5 and the front end of the valve body 17.
  • the lower surface opening 11a is provided on the lower surface of the chamber. The bullet W supplied from the magazine 15 is supplied into the chamber 11 via the lower surface opening 11a.
  • the trigger 13 is rotatably centered on the trigger axis provided on the air gun main body 1.
  • the upper end of the trigger 13 is biased against the gun rear end side by the trigger spring 14.
  • the magazine 15 is detachably provided in the frame 2. Multiple bullets W are loaded in the magazine 15.
  • a magazine spring 16 is provided in the magazine 15. Bullets W are always biased upwards by the magazine spring 16.
  • a bullet W abuts against the lower part of the outer circumferential surface of the rear end of the inner barrel 5 and is locked.
  • a bullet W moves upwards by the urging force of the magazine spring 16 and is placed in the chamber 11 (the bullet is loaded in the chamber).
  • the valve body 17 fixed to the frame 2 is provided between the chamber 11 on the muzzle side and the cylinder 23 on the gun rear side and incorporates a hollow valve body air chamber 17a inside.
  • the valve body 17 can be sealed to contain the compressed gas.
  • the discharge valve 19 is provided in the valve body air chamber 17a capable of moving away from the muzzle side to the gun rear end side.
  • the discharge valve 19 has a valve through hole 190 passing from the muzzle side to the gun rear end side in the valve body air chamber 17a, is cylindrical, has the flange part 19a on the circumference, and has a valve spring 21 that biases the discharge valve 19 towards the muzzle on the circumferential surface.
  • the diameter of the flange part 19a is larger than the other outer diameters of the discharge valve 19. If the discharge valve 19 is biased towards the muzzle side by the valve spring 21, the flange part 19a abuts against the valve packing 20 provided in front of the valve body air chamber 17a to close the gas inlet port 19b and the inside of the valve body air chamber 17a.
  • the discharge valve 19 has the gas inlet port 19b that can open or close the valve body air chamber 17a and valve through hole 190 depending on the movement from the muzzle to the gun rear end side on the muzzle side of the flange part 19a and further has a discharge valve front part 19c with a front through hole 190b on the muzzle side of the gas supply port 19b.
  • the cylindrical diameter of the discharge valve front part 19c is smaller than the cylindrical diameter of the rear of the flange part 19a.
  • the cylindrical diameter of the discharge valve front part 19c can fit the internal cylindrical diameter of the hit pin 22 described below.
  • the valve through hole 190 passes completely from the muzzle to the gun rear end side.
  • a rear through hole 190a is formed at the gun rear end side of the gas supply port 19b and a front through hole 190b is formed at the muzzle side.
  • the hit pin 22 is positioned at the muzzle side of the discharge valve 19, has a pin through hole 22a that completely pass from the muzzle to the gun rear end side, and can move in the longitudinal direction.
  • the hit pin 22 fits the discharge valve front part 19c of the discharge valve 19.
  • the hit pin 22 can move the discharge valve 19 in the longitudinal direction by the retreat of the inner barrel 5.
  • the cylinder 23 is slidably provided on the slide 3 in an integrated manner.
  • the cylinder 23 is cylindrical and provided with the rear wall surface on the gun rear end side.
  • the inner surface of the wall is constituted as the cylinder pressure receiving surface 23a.
  • the rear part of the valve body 17 is inserted into the cylinder 23.
  • the gas cylinder A is provided in the frame 2 of the air gun main body.
  • the gas cylinder is inserted into the frame 2.
  • the compressed gas in the gas cylinder A passes through the gas supply port C and gas passage to impregnate the valve body air chamber 17a so that the initial state is obtained.
  • Figs. 2 and 11 show a state in which a user manually pulls the trigger 13 towards the gun rear end side starting from the state shown in Fig. 1 .
  • the trigger 13 rotates centering on the trigger axis 13a and the upper tip part 13b of the trigger abuts against and presses the trigger abutting part 9a of the barrel latch 9.
  • the barrel housing 8 presses the barrel spring washer 7 towards the muzzle side.
  • the barrel spring washer 7 moves to the muzzle side while pressing the barrel spring 6.
  • the inner barrel 5 and the barrel housing 8 move towards the muzzle.
  • Figs. 3 and 12 will be explained. If the trigger 13 is pulled further towards the gun rear end side, the upper tip part 13b of the trigger is tripped from the trigger abutting part 9a of the barrel latch 9 and the abutment between the trigger 13 and the barrel latch 9 is released.
  • a bullet W is biased above the magazine spring 16 in the magazine 15 and the bullet cannot move into the chamber 11 because it abuts on the lower part of the circumference of the rear end of the inner barrel 5.
  • the inner barrel 5 moves towards the muzzle side and the lower surface opening 11a of the chamber 11 opens and a bullet W is inserted into the chamber 11 from the lower surface opening 11a to be loaded.
  • Figs, 5 and 14 will now be explained.
  • the inner barrel 5 moves further towards the gun rear end side from the state shown in Figs. 4 and 13 .
  • the barrel spring washer 7 stops retreating towards the gun rear end side because the frame locking part 7a formed below the barrel spring washer 7 abuts on the barrel spring washer retreat stop part 2b formed in the frame 2.
  • the inner barrel 5 and the barrel housing 8 keep on moving towards the gun rear end side by the movement inertial force due to their own weight, even though the barrel spring washer 7 has stopped retreating.
  • the barrel spring washer 7 is removed from the barrel housing 8.
  • the gun rear end side of the inner barrel 5 keeps on moving backward due to its inertial force, enters the inner circumference of the chamber 11, hits the hit pin 22 and presses and moves the hit pin 22 towards the gun rear end side.
  • Figs. 7 and 16 will now be explained.
  • the remaining gas enters the valve through hole 190 from the valve body air chamber 17a via the gas supply port 19b, and discharged from the opening at the rear end of the discharge valve 19 to press the cylinder pressure receiving surface 23a.
  • This pressure thrusts back the cylinder 23 and the slide 3 consolidated with the cylinder 23.
  • the slide 3 and the cylinder 23 further keep on retreating while resisting the urging force of the recoil spring 12 because the gas in the valve body air chamber 17a keep on blowing out.
  • the slide 3 stops retreating when the slide locking part 3b provided on the lower part of the muzzle side of the slide 3 abuts on the slide retreat stopping part 2a provided on the frame 2.
  • the gas remaining in the cylinder 23 is discharged into the atmosphere from the muzzle side opening of the cylinder 23.
  • Figs. 9 and 19 will now be explained.
  • the trigger 13 rotates in a clockwise direction centering on the trigger axis 13a by the urging force of the trigger spring 14 to return to the original position (the state shown in Fig. 1 ).
  • the barrel latch 9 is raised by the upper tip part 14b of the trigger 13 due to the movement of the trigger 13 to return to the original position. After that, the barrel latch 9 is locked when the barrel housing locking part 9b of the barrel latch 9 abuts on the barrel latch locking part 8a of the barrel housing 8.
EP20080014231 2008-08-08 2008-08-08 Pistolet pneumatique avec mécanisme de refoulement Active EP2151660B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20080014231 EP2151660B1 (fr) 2008-08-08 2008-08-08 Pistolet pneumatique avec mécanisme de refoulement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080014231 EP2151660B1 (fr) 2008-08-08 2008-08-08 Pistolet pneumatique avec mécanisme de refoulement

Publications (2)

Publication Number Publication Date
EP2151660A1 true EP2151660A1 (fr) 2010-02-10
EP2151660B1 EP2151660B1 (fr) 2011-12-28

Family

ID=40193773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080014231 Active EP2151660B1 (fr) 2008-08-08 2008-08-08 Pistolet pneumatique avec mécanisme de refoulement

Country Status (1)

Country Link
EP (1) EP2151660B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016181426A1 (fr) * 2015-05-13 2016-11-17 株式会社スカイロボット Dispositif de tir de bille de couleur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6026797A (en) 1998-09-25 2000-02-22 Maruzen Company Limited Air gun
US6458009B1 (en) 2000-06-07 2002-10-01 Chuan-Tien Chuang Fishing toy
US20060162711A1 (en) * 2004-12-30 2006-07-27 Maruzen Company Limited Air gun
US20070181116A1 (en) * 2006-02-06 2007-08-09 Wilson Wei Air gun
EP1939576A1 (fr) 2006-12-29 2008-07-02 Maruzen Company Limited Pistolet pneumatique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6026797A (en) 1998-09-25 2000-02-22 Maruzen Company Limited Air gun
DE19847638A1 (de) * 1998-09-25 2000-04-27 Company Limited Tokio Maruzen Luftpistole
US6458009B1 (en) 2000-06-07 2002-10-01 Chuan-Tien Chuang Fishing toy
US20060162711A1 (en) * 2004-12-30 2006-07-27 Maruzen Company Limited Air gun
US7267119B2 (en) 2004-12-30 2007-09-11 Maruzen Company Limited Air gun
US7353816B2 (en) 2004-12-30 2008-04-08 Maruzen Company Limited Air gun
US20070181116A1 (en) * 2006-02-06 2007-08-09 Wilson Wei Air gun
EP1939576A1 (fr) 2006-12-29 2008-07-02 Maruzen Company Limited Pistolet pneumatique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016181426A1 (fr) * 2015-05-13 2016-11-17 株式会社スカイロボット Dispositif de tir de bille de couleur
JP6097448B1 (ja) * 2015-05-13 2017-03-15 株式会社 スカイロボット カラーボール発射装置

Also Published As

Publication number Publication date
EP2151660B1 (fr) 2011-12-28

Similar Documents

Publication Publication Date Title
US7766000B2 (en) Air gun with a blowback mechanism
US7353816B2 (en) Air gun
RU2333446C2 (ru) Пневматический пистолет
USRE39805E1 (en) Air gun
US7677235B2 (en) Toy gun
TWI407074B (zh) 電動空氣槍
US4015512A (en) Gas-operated firearm
JP2989162B2 (ja) 自動弾丸供給機構付玩具銃
TWI390173B (zh) 玩具槍
US7856969B2 (en) Air gun
TW200940942A (en) Air gun and magazine for air gun
US7849845B2 (en) Degassing tool for high pressure pre-charged pneumatic airgun
EP1939576B1 (fr) Arme à air comprimé
EP2151660B1 (fr) Pistolet pneumatique avec mécanisme de refoulement
JPH03236598A (ja) 玩具銃におけるブローバック方法およびその装置
JPH07225096A (ja) 玩具空気銃
TWI400426B (zh) Air gun with automatic override
EP1677066B1 (fr) Arme à air comprimé
TWI338119B (fr)
JPH0477240B2 (fr)
JPH11344298A (ja) エアガン
JP3502780B2 (ja) 自動弾丸供給機構付玩具銃
JPH08233491A (ja) 玩具ガス銃
JP2657781B2 (ja) 玩具空気銃
JP2561444B2 (ja) ガス蓄圧供給装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20100602

17Q First examination report despatched

Effective date: 20100628

AKX Designation fees paid

Designated state(s): DE FR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008012280

Country of ref document: DE

Effective date: 20120308

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20121001

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008012280

Country of ref document: DE

Effective date: 20121001

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230824

Year of fee payment: 16

Ref country code: DE

Payment date: 20230824

Year of fee payment: 16