EP1541957B1 - Pompe à gaz comprimé pour réplique d'arme - Google Patents

Pompe à gaz comprimé pour réplique d'arme Download PDF

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Publication number
EP1541957B1
EP1541957B1 EP04300852A EP04300852A EP1541957B1 EP 1541957 B1 EP1541957 B1 EP 1541957B1 EP 04300852 A EP04300852 A EP 04300852A EP 04300852 A EP04300852 A EP 04300852A EP 1541957 B1 EP1541957 B1 EP 1541957B1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder head
head
gas
replica
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
Application number
EP04300852A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1541957A1 (fr
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
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Filing date
Publication date
Application filed by Cybergun SA filed Critical Cybergun SA
Publication of EP1541957A1 publication Critical patent/EP1541957A1/fr
Application granted granted Critical
Publication of EP1541957B1 publication Critical patent/EP1541957B1/fr
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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
    • F41B11/70—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
    • F41B11/60—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
    • F41B11/50—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 or compressed air pump for a replica of a ball-blasting weapon of the "Air Soft Gun ®” or “Soft Air ®” type. More specifically, the invention relates to the piston head and the cylinder head of the gas pump which have mutually adapted shapes for better exhausting of gas or compressed air to the barrel of the weapon replica.
  • the invention finds applications in the field of the weapon replica, long or point, operating spring with compression of air or compression of another gas, with a manual or electrical arming.
  • the invention applies, in particular, to the replica weapons whose projectiles are plastic balls, very light, with a diameter of about 6 mm.
  • a gas pump for a replica of a blasting gun having the features of the preamble of claim 1 is known from US 3 958 550 A.
  • a gear system 5 in the weapon body acts on the pump 6 which then evacuates the air or gas contained in said pump to the barrel 1 so as to project the plastic ball out of the barrel of the weapon replica.
  • FIG 2 shows a conventional pump system commonly found in most weapon replicas.
  • This pump system 6 comprises a cylinder 7 which forms the walls of a compartment 72 for holding the gas.
  • the cylinder 7 comprises a cylinder head 71 which forms a side wall, on the 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 spring of compression 11 inside the compartment 72, towards the cylinder head 71.
  • FIG. 2 shows two possible positions of the piston in the compartment 72: the upper part of the piston is shown in its closed position, that is to say when the piston is against the cylinder head and the lower part 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 piston assembly 8, towards the cylinder head 71 provides a compression of the gas in the compartment 72.
  • This compressed gas which then seeks 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. It has a diameter at most equal to that of the balls so that the balls can not enter the tip.
  • the tip may be of different shapes, depending, in particular, the model of the replica weapon, for example if it is an electric model or manual.
  • the tip 9 has a fixed portion 9a integral with the cylinder head 71 and a movable portion 9b connected to the drive fork of the loading tip which ensures the linear movement before /back .
  • This range being itself driven by a pin on one of the gear wheels of the gear system and a return spring.
  • the tip 9 is completely fixed, but the pump being movable (because located inside the bolt which is movable), the loading of the ball in the barrel is carried out in the same way. The ball 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 which 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 in the cylinder 7 to the cylinder head 71, that is to say in a closed position, thus reducing the volume of the compartment 72 and thereby creating the compressed gases which, evacuated by the nozzle 9, eject the ball.
  • the piston 8 is then driven by a rack 84 back again by compressing the spring to prepare the next shot. This movement of the piston 8 has the effect of compressing the gas in the compartment 72.
  • the cylinder head 71 is flat. It comprises, at its center, a gas evacuation orifice 73, in which is housed an end of the ejection nozzle 9. The gas compressed by the piston 8 in the compartment 72 then escapes from said compartment by this
  • the shape of the piston head 81 is adapted to the shape of the cylinder head 71.
  • the piston head 81 is therefore flat, like the cylinder head. In the closed position, the piston head 81 and the cylinder head 71 are therefore in mechanical contact with each other.
  • replica automatic electric weapons it is the engine that suffers the most because of the existence of a spring with high stiffness. It requires a more powerful engine, which consumes more power. However, this engine is powered by a battery, whose size is limited by the available volume for the battery in the replica weapon. The autonomy of engine of the replica weapon is greatly reduced by the use of a spring with high stiffness. In addition, the reduction box composed of several pinions and toothed wheels tire very quickly and the teeth eventually break.
  • the invention provides a gas pump or compressed air in which the piston head has a conical shape which fits into the cylinder head whose shape is adapted to that of the piston head.
  • the cylinder head forms a funnel allowing the compressed gas to be directed to the central orifice of the cylinder head and thus to the ejection nozzle.
  • the funnel shape of the cylinder head associated with the conical shape of the piston head considerably reduces the resistance encountered by the gas to escape from the gas holding compartment by the ejection nozzle.
  • This pump is characterized in that, on the one hand, the piston head has a conical shape and, on the other hand, the cylinder head has a funnel shape, complementary to the conical shape of the piston head.
  • the cylinder head and the piston head have shapes facilitating the thrust of the compressed gas towards the ejection nozzle.
  • a compressed air pump will be described, it being understood that any other gas usually used in the pumps of the replica weapons can also be used in the pump of the invention.
  • FIG. 3 there is shown a side view, in section, of the compressed air pump of the invention.
  • This FIG. 3 shows a cylinder 7 forming a compartment 72 for retaining air.
  • This cylinder 7 is provided with a cylinder head 71 in the center of which an orifice 73 allows the evacuation of air to the barrel of the replica weapon.
  • One end of an ejection tip 9, identical to that of the prior art, is housed near this central orifice 73.
  • This FIG. 3 also shows a piston 8 able to move inside the compartment 72.
  • the piston 8 has a conical piston head 81, that is to say which has the shape of a cone whose top 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, has a first end which passes through the orifice 73 to open into the compartment 72. first end is housed in the cylinder head, near said orifice 73. The second end opens into the barrel of the replica weapon.
  • the nozzle 9 is inserted into the cylinder head by overmolding.
  • the ejection nozzle 9 is intended to pass the compressed air from the air compression compartment 72 to the barrel in which a plastic ball is pending expulsion.
  • the flow of compressed air ensures the expulsion of the ball.
  • the ejection tip In the case of a replica electrically charged weapon, the ejection tip is movable, the arming of the ball being done by a movement of this tip driven by the drive fork. This displacement is represented in FIG. 3 by arrows. In the case of an electric model, the displacement of the ejection tip, also called the loading tip, makes it possible to push the ball into the barrel at the time of firing.
  • the cylinder head 71 is sealed to the air inside the cylinder 7 by means of an O-ring 74 placed in a housing of the cylinder head.
  • the piston head 81 has a first flange 89 and a second flange 90.
  • the second flange 90 has a conical shape. It is this flange which is in contact with the compressed air.
  • 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 pin 83 which is inserted into 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, seals between the piston and the cylinder.
  • This O-ring 88 is placed in a housing 91 made in the first flange 89, whose volume is greater than the diameter of the seal.
  • the pump system also comprises a damper 87 located between the piston head 81 and the cylinder head 71.
  • This damper 87 may be an O-ring. Its role is to dampen the contact between the piston head and the cylinder head, at the moment when the piston head collapses against the cylinder head. Indeed, given the shape of the cylinder head and the piston head, the compressed air is released very quickly in the ejection nozzle, so that the speed of the piston arriving on the cylinder head is relatively important.
  • This damper, or damping gasket, 87 makes it possible to avoid violent mechanical contact between the piston head and the cylinder head, which could damage one or other of the heads.
  • the damping gasket 87 thus provides a minimum necessary distance between the cylinder head and the piston head to avoid a shock of the piston head on the cylinder head.
  • the piston and the spring drive the piston head towards the cylinder head.
  • the air in the air holding compartment 72 is then compressed. Due to the shape of the piston and cylinder heads, 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 a global mass towards the center of the cylinder head.
  • This pump therefore considerably reduces the resistance encountered by the air when it escapes through the ejection nozzle.
  • This resistance is further reduced by using means for swirling the airflow to the ejection 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 to the cylinder head.
  • Figures 4A and 4B show sectional views of the cylinder head of the invention. More specifically, Figure 4B shows a side sectional view of the cylinder head. This figure shows the ejection tip 9 which ends in the central orifice 73 of the cylinder head 71. In the embodiment of FIG. 4B, the cylinder head comprises fins 75 intended to swirl the airflow to the central hole and thus to the ejector 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 the whole compressed air was 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 in number six. Their number, their shape and their location are chosen so as to cause a vortex of the flow of compressed air towards 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 piston head of the invention. This view shows the end of the piston head 81 with its second flattened cone flange 90 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 various elements of the piston together.
  • Figure 5B shows a front sectional view of the piston head 81.
  • This Figure 5B shows six slots 93 for receiving 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 air passage orifices 92 towards the seal 88, an orifice 92 being made at the bottom of each slot 93. It should be noted, however, that the number and location of the orifices 93 Airflow may vary depending on the type of gasket used and the model of the weapon replica.
  • FIG. 6 shows schematically the air flow obtained inside the cylinder head.
  • This airflow is schematized by arrows.
  • this flow of compressed air is directed by the fins 75 towards the center of the cylinder head 71, which forms, in the vicinity of the central orifice 73, a vortex ensuring a greater ejection fast flow of air into the ejection tip.
  • the compressed air between the fins 75 increases in speed and begins to rotate converging towards the center of the cylinder head, thereby creating a centripetal vortex engulfing the ejection tip, which increases substantially the speed of the air and therefore the energy of the flow intended to propel the ball 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)
  • Jet Pumps And Other Pumps (AREA)
  • Compressor (AREA)
  • Nozzles (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Steroid Compounds (AREA)
  • Reciprocating Pumps (AREA)
  • Manipulator (AREA)
EP04300852A 2003-12-12 2004-12-07 Pompe à gaz comprimé pour réplique d'arme Active EP1541957B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=34508778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04300852A Active EP1541957B1 (fr) 2003-12-12 2004-12-07 Pompe à gaz comprimé pour réplique d'arme

Country Status (12)

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

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
WO2010147565A2 (en) * 2009-06-16 2010-12-23 Atak Silah Sanayi Ve Ticaret Limited Sirketti High-power pneumatic weapon system
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
US10401120B2 (en) * 2015-03-24 2019-09-03 Tokyo Marui Co., Ltd. Cut-off device for electric mechanism in simulation gun
WO2016151763A1 (ja) * 2015-03-24 2016-09-29 株式会社東京マルイ 複数弾発射型電動ガン
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
US12055363B2 (en) * 2022-02-09 2024-08-06 Tricord Solutions, Inc. Projectile launching apparatus

Family Cites Families (6)

* 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.
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
SE377182B (ja) * 1973-05-04 1975-06-23 Foerenade Fabriksverken
US5531210A (en) * 1994-11-16 1996-07-02 Hasbro, Inc. Toy gun

Also Published As

Publication number Publication date
ES2270319T3 (es) 2007-04-01
EP1541957A1 (fr) 2005-06-15
US20050183709A1 (en) 2005-08-25
US7114493B2 (en) 2006-10-03
ATE335979T1 (de) 2006-09-15
JP2005172000A (ja) 2005-06-30
TWI274842B (en) 2007-03-01
FR2863698A1 (fr) 2005-06-17
JP4048198B2 (ja) 2008-02-13
KR100646735B1 (ko) 2006-11-23
DK1541957T3 (da) 2006-12-11
DE602004001840T2 (de) 2007-03-08
TW200523520A (en) 2005-07-16
HK1082539A1 (en) 2006-06-09
KR20050058984A (ko) 2005-06-17
PT1541957E (pt) 2006-12-29
DE602004001840D1 (de) 2006-09-21
FR2863698B1 (fr) 2008-02-22

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