EP1541957A1 - Luftdruckpumpe für eine Luftdruckwaffe - Google Patents

Luftdruckpumpe für eine Luftdruckwaffe Download PDF

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Publication number
EP1541957A1
EP1541957A1 EP04300852A EP04300852A EP1541957A1 EP 1541957 A1 EP1541957 A1 EP 1541957A1 EP 04300852 A EP04300852 A EP 04300852A EP 04300852 A EP04300852 A EP 04300852A EP 1541957 A1 EP1541957 A1 EP 1541957A1
Authority
EP
European Patent Office
Prior art keywords
piston
head
cylinder head
gas
cylinder
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
EP04300852A
Other languages
English (en)
French (fr)
Other versions
EP1541957B1 (de
Inventor
Bertrand Marsac
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.)
Cybergun SA
Original Assignee
Cybergun SA
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 Cybergun SA filed Critical Cybergun SA
Publication of EP1541957A1 publication Critical patent/EP1541957A1/de
Application granted granted Critical
Publication of EP1541957B1 publication Critical patent/EP1541957B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • F41B11/68—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas the gas being pre-compressed before firing
    • F41B11/681—Pumping or compressor arrangements therefor
    • 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
    • F41B11/71—Electric or electronic control systems, e.g. for safety purposes
    • 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
    • F41B11/50—Magazines for compressed-gas guns; Arrangements for feeding or loading projectiles from magazines
    • F41B11/57—Electronic or electric systems for feeding or loading
    • 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
    • F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • F41B11/64—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas having a piston effecting a compressor stroke during the firing of each shot
    • 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
    • F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
    • F41B11/89—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes for toys

Definitions

  • the invention relates to a gas pump or compressed air for replica Bullet gun of the "Air Soft Gun ®” or “Soft Air ®” type.
  • the invention relates more specifically to the piston head and the cylinder head of the gas pump which have shapes, adapted to each other, to ensure a better escape of gas or compressed air to the gun of the replica weapon.
  • the invention finds applications in the field of replication weapon, long or stitch, spring operated with air compression or compression of another gas, with manual or electric arming.
  • the invention applies, in particular, to replica weapons whose projectiles are plastic balls, very light, of a diameter about 6 mm.
  • a gear system 5 in the weapon body acts on the pump 6 which then evacuates the air or the gas contained in said pump towards the barrel 1 so as to project the ball into plastic out of the barrel of the weapon replica.
  • FIG. 2 represents a conventional pump system that can be found commonly found in most weapon replicas.
  • This pump system 6 comprises a cylinder 7 which forms the walls of a containment compartment 72 some gas.
  • the cylinder 7 comprises a cylinder head 71 which forms a wall side, barrel side 1, of said compartment 72.
  • This pump system 6 also comprises a piston 8 provided with a piston head 81. The piston is pushed by a compression spring 11 inside the compartment 72, towards the cylinder head 71.
  • Figure 2 shows two possible positions of the piston in the compartment 72: the upper part of the piston is shown in its position closed, that is to say when the piston is against the cylinder head and the part bottom shows the open position of the piston, that is to say when the piston is retained by the compression spring 11. These two positions will be described in detail later.
  • the movement of the piston head 81, driven by the whole of the piston 8, towards the cylinder head 71 ensures a compression of the gas located in compartment 72.
  • This compressed gas which then seeks to to escape from the compartment 72, engulfs in an ejection nozzle 9 connecting the cylinder head 71 and the barrel 1.
  • This nozzle 9 is generally cylindrical and housed inside the central orifice 73 of the cylinder head. He has a diameter at most equal to that of the balls so that the balls do not can enter the mouthpiece.
  • the tip can be of different shapes, depending, in particular, on the model of the replica weapon, for example if This is an electric or manual model.
  • the tip 9 comprises a fixed part 9a integral with the cylinder head 71 and a part mobile 9b connected to the drive fork of the loading tip which ensures the linear movement forward / backward. This range being itself driven by a pin on one of the toothed wheels of the gear system and a return spring. So, before the head of piston does not crash against the cylinder head, the moving part 9b of the tip 9 is pushed towards the barrel 1, which pushes the ball located at the head from the magazine to the barrel entrance in the barrel joint. At the same time, gas evacuated from the compartment 72 passes through the tip 9, reaches the ball and the propels out of the barrel.
  • the tip 9 is completely fixed, but the pump being movable (because located inside the breech which is movable), the loading the ball into the barrel is done in the same way. The marble is then propelled out of the barrel in the same way under the effect of the gas.
  • the compartment 72 has a large volume and the gas that is in this volume is decompressed.
  • the compression spring 11 is decompressed, released as a result of the action on the trigger, it pushes the piston 8 into the cylinder 7 to the cylinder head 71, that is to say in a closed position, thereby reducing the volume of the compartment 72 and thereby creating the gases tablets which, evacuated by the tip 9, eject the ball.
  • the piston 8 is then driven by a rack 84 again to the rear in compressing the spring to prepare the next shot. This movement of the piston 8 has the effect of compressing the gas in compartment 72.
  • the head cylinder 71 is flat. It comprises, in its center, an orifice 73 gas discharge, in which is housed an end of the nozzle ejection 9. The gas compressed by the piston 8 in the compartment 72 then escapes from said compartment by this nozzle 9.
  • the shape of the head of piston 81 is adapted to the shape of the cylinder head 71.
  • the piston head 81 is flat, like the cylinder head. In the closed position, the head of piston 81 and the cylinder head 71 are therefore in mechanical contact with each other. the other.
  • the invention proposes a gas pump or compressed air in which the piston head has a conical shape that comes fit into the cylinder head whose shape is adapted to that of the piston head.
  • the cylinder head forms a funnel allowing the gas compressed to be directed to the central hole of the cylinder head and so to the ejection tip.
  • the funnel shape of the cylinder head associated with the tapered shape of the piston head can significantly reduce the resistance encountered by the gas to escape from the compartment of gas restraint, by the ejection tip.
  • This pump is characterized by the fact that, on the one hand, the piston head has a conical shape and, on the other hand, the cylinder head has a shape in funnel, complementary to the conical shape of the piston head.
  • the head of cylinder and the piston head have shapes facilitating the thrust of the gas compressed to the ejection tip.
  • a compressed air pump we describe a compressed air pump, it being understood that any other gas used usually in the replica weapons pumps can also be used in the pump of the invention.
  • FIG. 3 shows a side view, in section, of the compressed air pump of the invention.
  • This figure 3 shows a cylinder 7 forming an air holding compartment 72.
  • This cylinder 7 is provided with a cylinder head 71 in the center of which an orifice 73 allows the evacuation of air towards the barrel of the replica weapon.
  • One end of a mouthpiece ejection 9, identical to that of the prior art, is housed near this central orifice 73.
  • This FIG. 3 also shows a piston 8 which can be move within compartment 72.
  • the piston 8 has a conical piston head 81, that is to say which has the shape of a cone whose summit is flattened.
  • the cylinder head 71 has a funnel shape. In other words, the cylinder head forms a conical neck whose center is the orifice 73.
  • the shape of the piston head 81 is adapted to fit into the funnel shape of the cylinder head 71.
  • the cylinder head 71 is fixed in the cylinder 7. It comprises a central orifice 73.
  • the ejection nozzle 9, in the invention, comprises a first end which passes through the orifice 73 to open into the compartment 72. This first end is housed in the cylinder head, near said orifice 73. The second end opens into the barrel of the weapon replica.
  • the tip 9 is inserted into the cylinder head by overmolding.
  • the ejection tip 9 is intended to make to pass the compressed air from the compartment 72 of air compression, to the barrel in which a plastic ball is pending deportation.
  • the flow of compressed air ensures the expulsion of the ball.
  • the tip of ejection In the case of a replica electrically charged weapon, the tip of ejection is mobile, the arming of the ball being done by a movement of this tip animated by the training fork. This displacement is shown in Figure 3 by arrows. In the case of a model electric, the displacement of the ejection tip, also called the mouthpiece loading, allows to push the ball in the barrel at the time of the shot.
  • the cylinder head 71 is made airtight, inside the cylinder 7, by means of an O-ring 74 placed in a housing of the head of cylinder.
  • the piston head 81 comprises a first flange 89 and a second flange 90.
  • the second flange 90 has a conical shape. It is this flask that is in contact with compressed air.
  • the flat top of the cone of the second flange located opposite the orifice 73 of the cylinder head, allows to direct maximum compressed air to the central hole of the cylinder head.
  • the first flange 89 is located at the rear of the second flange. It serves as an interface between the piston head 81 and the other elements of the piston 8. In particular, the first flange 89 is fixed on the rack 84 for driving the piston.
  • a screw 85 passes through the second flange 90 and the first flange 89.
  • This screw 85 is screwed into a nut 86, against which the spring 11 is supported.
  • This nut 86 has a rotational locking lug 83 which is inserted in the first flange 89 of the piston.
  • This locking pin 83 makes it possible to avoid any rotation of the piston 8 inside the cylinder 7.
  • An O-ring 88 placed between the first flange 89 and the second flange 90 of the piston, ensures the seal between the piston and the cylinder.
  • This seal toric 88 is placed in a housing 91 made in the first flange 89, whose volume is greater than the diameter of the joint. So when the head of piston approaches the cylinder head, a little compressed air from the compartment 72 passes into the housing 91 of the O-ring, by through the passage holes 92. This has the effect of pressing the seal outwards, that is to say against the cylinder 7, which ensures the seal between the piston head and the cylinder, avoiding any air rejection behind the piston head.
  • the pump system also comprises a damper 87 located between the piston head 81 and the cylinder head 71.
  • damper 87 may be an O-ring. Its role is to dampen contact between the piston head and the cylinder head, at the moment when the piston head comes crashing against the cylinder head. Indeed, given the shape of the cylinder head and the piston head, the compressed air is very quickly in the ejection tip, so that the piston speed arriving on the cylinder head is relatively important.
  • This damper, or damping gasket, 87 avoids violent mechanical contact between the piston head and the cylinder head, which could damage one or the other of heads.
  • the damping gasket 87 thus ensures minimum distance required between the cylinder head and the piston head to prevent shock of the piston head on the cylinder head.
  • the compressed air pump of the invention when user presses the trigger of the replica weapon, and the spring drive the piston head to the cylinder head.
  • the air present in the compartment air retainer 72 is then compressed. Due to the shape of the piston heads and cylinder, the flow of compressed air is directed directly to the orifice 73 and therefore to the ejection nozzle 9. The air flow is thus concentrated in one overall mass towards the center of the cylinder head.
  • This pump therefore makes it possible to considerably reduce the resistance encountered by the air as it escapes through the ejection nozzle. This resistance is further diminished by using means intended to make swirl the airflow to the ejector tip.
  • These means consist of fins placed on the surface of the cylinder head. The piston head then has slots or notches for receiving these fins, that is to say to fit around the fins, when the piston head is close of the cylinder head.
  • FIG. 4B shows a view in side cut of the cylinder head.
  • the mouthpiece ejection 9 which terminates in the central orifice 73 of the cylinder head 71.
  • the cylinder head comprises fins 75 for swirling the air flow to the central orifice and therefore towards the ejection tip.
  • This figure also shows the O-ring 87, placed at the front of the cylinder head so that the piston head and the cylinder head can not come into direct contact with each other, when all the compressed air has been evacuated.
  • FIG. 4A shows a front sectional view of the cylinder head 71.
  • the cylinder head 71 on which are fixed different fins 75.
  • these fins are number of six. Their number, shape and location are chosen from way to cause a vortex of compressed air flow to the center of the cylinder head that is to say towards the orifice 73.
  • These fins can be fixed on the cylinder head by any known fastening means. They can also be molded with the cylinder head.
  • FIG. 5A there is shown a side sectional view of the head piston of the invention.
  • This view shows the end of the piston head 81 with its second flange 90 in the shape of a flattened cone and its first flange 89, both separated by a seal 88. It also shows the assembly screw 85 which passes through the piston head to fix the different elements of the piston together.
  • FIG. 5B shows a front sectional view of the piston head 81.
  • This FIG. 5B shows six slots 93 intended to receive the six fins of the cylinder head. These slots 93 have dimensions and adapted shapes to fit around the fins. These slots are made in the second flange 90, for example during the molding of said flange.
  • FIG. 5B also shows six airflow orifices 92 towards the seal 88, an orifice 92 being formed at the bottom of each slot 93. It should be noted, however, that the number and location of airflow may vary depending on the type of joint used and the model of the replica weapon.
  • FIG. 6 schematically represents the air flow obtained at inside the cylinder head.
  • This airflow is schematized by arrows.
  • this compressed air flow is led by the fins 75 towards the center of the cylinder head 71, which forms, in the vicinity the central orifice 73, a vortex ensuring a faster ejection of the flow of air in the ejection tip.
  • the compressed air between the fins 75 sees its speed increase and starts to turn converging towards the center of the cylinder head, thus creating a centripetal swirl engulfing the ejection tip, which substantially increases the speed of the air and therefore the energy of the flow intended to propel the ball located at the entrance of the barrel.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Nozzles (AREA)
  • Manipulator (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Reciprocating Pumps (AREA)
  • Steroid Compounds (AREA)
EP04300852A 2003-12-12 2004-12-07 Luftdruckpumpe für eine Luftdruckwaffe Active EP1541957B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0351032 2003-12-12
FR0351032A FR2863698B1 (fr) 2003-12-12 2003-12-12 Pompe a gaz comprime pour replique d'arme

Publications (2)

Publication Number Publication Date
EP1541957A1 true EP1541957A1 (de) 2005-06-15
EP1541957B1 EP1541957B1 (de) 2006-08-09

Family

ID=34508778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04300852A Active EP1541957B1 (de) 2003-12-12 2004-12-07 Luftdruckpumpe für eine Luftdruckwaffe

Country Status (12)

Country Link
US (1) US7114493B2 (de)
EP (1) EP1541957B1 (de)
JP (1) JP4048198B2 (de)
KR (1) KR100646735B1 (de)
AT (1) ATE335979T1 (de)
DE (1) DE602004001840T2 (de)
DK (1) DK1541957T3 (de)
ES (1) ES2270319T3 (de)
FR (1) FR2863698B1 (de)
HK (1) HK1082539A1 (de)
PT (1) PT1541957E (de)
TW (1) TWI274842B (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060191523A1 (en) * 2004-12-07 2006-08-31 Paletz James S Apparatus for propelling projectiles
US7730881B1 (en) * 2005-02-07 2010-06-08 Impulse Solutions Llc Portable electric motor driven compressed air projectile launcher
EP2443410A2 (de) * 2009-06-16 2012-04-25 Atak Silah Sanayi Ve Ticaret Limited Sirketti Hochleistungsdruckluftwaffensystem
US8931467B2 (en) * 2011-07-05 2015-01-13 Si Young Lee Magazine rifle
GB201223006D0 (en) * 2012-12-20 2013-01-30 Roots Noel L A spring powered gas operated weapon
US20150316345A1 (en) * 2013-09-07 2015-11-05 Gaither Tool Company, Inc. Quick-Release Valve Air Gun
CN104034206B (zh) * 2014-06-03 2015-09-02 绍兴市岭峰气枪制造有限公司 一种气瓶式气手枪
JP6676618B2 (ja) * 2015-03-24 2020-04-08 株式会社東京マルイ 複数弾発射型電動ガン
WO2016151764A1 (ja) * 2015-03-24 2016-09-29 株式会社東京マルイ 模擬銃における電動機構のカットオフ装置
US10350656B2 (en) 2016-11-11 2019-07-16 Milwaukee Electric Tool Corporation Drain clearing air gun
US10955215B2 (en) * 2019-08-22 2021-03-23 Tricord Solutions, Inc. Projectile launching apparatus
US11243045B2 (en) * 2020-06-05 2022-02-08 Tricord Solutions, Inc. Projectile launching apparatus
US20230251056A1 (en) * 2022-02-09 2023-08-10 Tricord Solutions, Inc. Projectile Launching Apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312734A (de) * 1953-04-25 1956-02-29 Furter Albert Luftgewehr
DE1030735B (de) * 1956-07-10 1958-05-22 J G Anschuetz G M B H Luftgewehr
DE1107560B (de) * 1958-04-30 1961-05-25 J G Anschuetz G M B H Luftgewehr
US3958550A (en) * 1973-05-04 1976-05-25 Forenade Fabriksverken Air rifle
US5531210A (en) * 1994-11-16 1996-07-02 Hasbro, Inc. Toy gun

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1299901A (en) * 1917-04-13 1919-04-08 Benjamin L Blair Air-gun.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312734A (de) * 1953-04-25 1956-02-29 Furter Albert Luftgewehr
DE1030735B (de) * 1956-07-10 1958-05-22 J G Anschuetz G M B H Luftgewehr
DE1107560B (de) * 1958-04-30 1961-05-25 J G Anschuetz G M B H Luftgewehr
US3958550A (en) * 1973-05-04 1976-05-25 Forenade Fabriksverken Air rifle
US5531210A (en) * 1994-11-16 1996-07-02 Hasbro, Inc. Toy gun

Also Published As

Publication number Publication date
FR2863698A1 (fr) 2005-06-17
KR20050058984A (ko) 2005-06-17
KR100646735B1 (ko) 2006-11-23
TWI274842B (en) 2007-03-01
US7114493B2 (en) 2006-10-03
FR2863698B1 (fr) 2008-02-22
TW200523520A (en) 2005-07-16
DE602004001840T2 (de) 2007-03-08
JP4048198B2 (ja) 2008-02-13
PT1541957E (pt) 2006-12-29
ES2270319T3 (es) 2007-04-01
DK1541957T3 (da) 2006-12-11
DE602004001840D1 (de) 2006-09-21
JP2005172000A (ja) 2005-06-30
EP1541957B1 (de) 2006-08-09
US20050183709A1 (en) 2005-08-25
ATE335979T1 (de) 2006-09-15
HK1082539A1 (en) 2006-06-09

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