EP3540360A1 - Abfeuerungsmechanismus für eine sportwaffe - Google Patents

Abfeuerungsmechanismus für eine sportwaffe Download PDF

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Publication number
EP3540360A1
EP3540360A1 EP19160599.7A EP19160599A EP3540360A1 EP 3540360 A1 EP3540360 A1 EP 3540360A1 EP 19160599 A EP19160599 A EP 19160599A EP 3540360 A1 EP3540360 A1 EP 3540360A1
Authority
EP
European Patent Office
Prior art keywords
firing
firing mechanism
release lever
trigger
firing pin
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
EP19160599.7A
Other languages
English (en)
French (fr)
Other versions
EP3540360B1 (de
Inventor
Giovanni Pietro Pardini
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.)
Pardini Armi Srl
Original Assignee
Pardini Armi Srl
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Publication date
Application filed by Pardini Armi Srl filed Critical Pardini Armi Srl
Publication of EP3540360A1 publication Critical patent/EP3540360A1/de
Application granted granted Critical
Publication of EP3540360B1 publication Critical patent/EP3540360B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • F41A19/31—Sear arrangements therefor
    • F41A19/32—Sear arrangements therefor for catching the percussion or firing pin after each shot, i.e. in single-shot or semi-automatic firing mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/12—Sears; Sear mountings

Definitions

  • the invention relates to the sector of weapons.
  • the invention relates to a firing mechanism for a sporting firearm, and precisely of carbine type.
  • a carbine firearm essentially comprises a stock, a barrel with chamber, a breech block and a firing mechanism.
  • the breech block of a carbine is provided with:
  • the firing mechanism is the assembly of mechanical parts destined to cause, when operated by the shooter, release of the firing pin that produces the impact thereof against the bottom of the round of ammunition contained in the chamber.
  • the firing mechanism In order to operate, the firing mechanism must be provided with a ratchet, the purpose of which is to hold back the mainspring or the firing pin in the cocking position, through a detent pawl. This latter in turn counteracts a trigger pawl that is operated, through sliding, by a control mechanism composed of various elements and levers located at the end of which is the trigger, i.e., an end lever on which the finger of the shooter rests and that, under the pulling action of the shooter, activates the assembly of the components of the firing mechanism.
  • a conventional firing mechanism comprises:
  • the most widely used firing mechanisms are sear devices, consisting of a first sear belonging to the trigger pawl and a second sear belonging to one of the levers connected to the trigger.
  • Said first and said second sear engage with each other, partially overlapping, during loading of the firearm, slide in relation to each other during actual firing until they disengage completely, with consequent yielding of the detent pawl, release of the preloaded firing pin and priming of the round of ammunition.
  • Firing mechanisms must be fluid in the mutual movements of their components, to prevent deviation of the firearm line of fire during activation of the trigger, and at the same time precise, to ensure operating safety, eliminating the possibility of unwanted accidental shots going off.
  • the sears must be very smooth, hardened and mirror polished, and there must be substantially no friction between them. Therefore, it is clear that the overlapped portion of the two sears must be as small as possible.
  • the firing devices described above have an evident disadvantage: the compression force of the mainspring, usually around 15 kg, rests, at least until the time of firing, on an extremely small portion of the overlapping sears, with the risk of friction occurring.
  • the components of the firing mechanism in particular the levers and the sears, over time can become worn and interact with one another with greater difficulty also causing frictions and compromising the efficacy of the device.
  • the invention intends to overcome these limits, producing a firing mechanism for a sporting firearm that is precise, to ensure sharp and fluid firing, but which is at the same time safe to avoid accidental yielding of the ratchet that blocks the breech block.
  • Another object of the invention is to minimize the resistance to release of the firing pin that must be overcome by the user pressing the trigger, also offering the user the opportunity to adjust this resistance as a function of his/her sensitivity to release of the shot.
  • a firing mechanism for a sporting firearm of the type comprising a barrel with a chamber, a breech block comprising a firing pin driven by a mainspring and positioned to strike a round of ammunition contained in said chamber, and a firing mechanism adapted to cooperate with said firing pin, where said firing mechanism comprises:
  • said elastic means are applied to said release lever on the opposite side to said detent pawl with respect to the fulcrum of the lever.
  • said elastic means comprise a coil spring.
  • said coil spring comprises a first and a second end, where said first end is associated with said release lever, and said second end is associated, at least indirectly, with said containment structure of said firing mechanism.
  • said elastic means comprise means for regulating the elastic force of said coil spring.
  • said regulating means comprise a screw accessible from outside said containment structure.
  • said regulating means comprise a lever rotatingly associated with said containment structure and having a first and a second arm, where:
  • a firing mechanism for a sporting firearm according to the invention has many advantages.
  • the elastic means associated with the firing mechanism minimize the resistance to the release of the firing pin, partially offsetting the force exerted by the spring of the breech block on the detent pawl.
  • Attenuation on the sears can be dosed by offsetting the pressing force of the spring of the breech block by means of the resistive elastic force of the coil spring.
  • the elastic force of the coil spring adapted to oppose the force exerted by the mainspring of the firing pin on the detent pawl can be calibrated through specific regulating means.
  • the user of the firearm acting on these regulating means, can modify the pressure that he/she must exert on the trigger to overcome the pressing force responsible for the friction between the sears, to take account of its sensitivity, of a wide variety of environmental disturbance or wear factors that can occur and that can interfere with the precision of the shot and with the efficacy of the firing mechanism.
  • Said regulating means are advantageously accessible from outside the firearm and thus make rapid and constant adjustment of the firearm possible without the need to disassemble and reassemble it.
  • FIG. 1-3 a portion of a sporting firearm A with firing mechanism 1 according to the invention is shown.
  • Said firearm A substantially comprises:
  • Said firing mechanism 1 comprises:
  • said levers comprise a first lever 6, responsible for travel of the trigger 5, and a second lever 7 (this latter defined in technical jargon detent counter-pawl), both rotatingly associated with said containment structure 8, respectively in a first 16 and in a second fulcrum 17, and adapted to transmit a force, reducing it, from said trigger 5 to said release lever 4.
  • the sears that determine the efficacy of the actual firing mechanism 1 are located between said second lever 7 and said release lever 4.
  • a first sear 40 belongs to said release lever 4, obtained at the first end 4' thereof, and a second sear 70 belongs to said second lever 7 connected to the trigger 5.
  • Said first 40 and said second 70 sear mutually engage, partially overlapping, during loading of the firearm A ( Fig. 2 ), slide in relation to each other during the actual firing until they become completely disengaged, with consequent yielding of the detent pawl 24, release of the firing pin 13 preloaded by the spring 23 of the breech block and priming of the round of ammunition M ( Fig. 3 ).
  • said firing mechanism 1 further comprises elastic means applied to said release lever 4, and adapted to oppose its rotation determined by the action of said trigger 5 or, in other terms, to oppose the force transferred by the mainspring 23 to the detent pawl 24.
  • said elastic means are applied to said release lever 4 on the side opposite said detent pawl 24 with respect to the fulcrum 14 of the lever.
  • said elastic means comprise a coil spring 9 having a first 9' and a second 9" end.
  • the first end 9' of said coil spring 9 is associated with the second end 4" of said release lever 4; the second end 9" of said coil spring 9 is instead associated with said containment structure 8 of said firing mechanism 1.
  • Said elastic means comprise means 10 for regulating the elastic force of said coil spring 9.
  • Said regulating means 10 comprise a calibration screw 11, accessible from outside said containment structure 8, and hence from outside the firearm A, and an L-shaped lever 12 rotatingly associated with said containment structure 8.
  • Said L-shaped lever 12 comprises a first 12a and a second 12b arm.
  • Said first arm 12a is associated with the second end 9" of said coil spring 9, while said second arm 12b is in supporting constraint with said screw 11.
  • the firing mechanism 1 is in neutral position: the detent pawl 24 is not engaging the firing pin 13, the sears 40, 70 of the release lever 4 and of the second lever 7 connected to the trigger 5 are not in contact.
  • the breech block 3 of the firearm A is closed and the firing mechanism 1 is calibrated by the user, i.e., the shooter.
  • the shooter cocks the firing pin 13 preloading the mainspring 23, and the firing mechanism 1 is arranged in locked configuration: the detent pawl 24 blocks the firing pin 13 fully absorbing the pressing force of the mainspring 23; the two sears 40, 70 are in contact with each other, partially overlapped.
  • the user screws the calibration screw 11 and loads the coil spring 9 as much as possible, increasing its extension and thereby absorbing all the force transferred to the detent pawl 24 by the firing pin 13 pushed by the mainspring 23.
  • the resistive force of the coil spring 9 is greater than the force of the mainspring 23 of the breech block 3.
  • the user gradually unscrews the calibration screw 11 relaxing the coil spring 9 until finding the right point of balance between the force that is absorbed by the detent pawl 24 and the force exerted on the coil spring 9, the sum of which must be just below 15 kg transferred by the mainspring 23 of the breech block 3.
  • the shot can be fired, pressing the trigger 5, which will be light, sharp and fluid, according to regulation.
  • the weapon A When the firing operation begins, the weapon A must be immobile and the previous operations, calibration of the firearm, breathing and aiming, must have already been carried out successfully.
  • the firing operation is composed of a first half and a second half, this latter responsible for disengagement of the firing pin 13 by the detent pawl 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Lubricants (AREA)
  • Polymerisation Methods In General (AREA)
EP19160599.7A 2018-03-13 2019-03-04 Abfeuerungsmechanismus für eine sportwaffe Active EP3540360B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000003479A IT201800003479A1 (it) 2018-03-13 2018-03-13 Dispositivo di scatto per un'arma da fuoco sportiva

Publications (2)

Publication Number Publication Date
EP3540360A1 true EP3540360A1 (de) 2019-09-18
EP3540360B1 EP3540360B1 (de) 2020-10-14

Family

ID=62530343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19160599.7A Active EP3540360B1 (de) 2018-03-13 2019-03-04 Abfeuerungsmechanismus für eine sportwaffe

Country Status (2)

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EP (1) EP3540360B1 (de)
IT (1) IT201800003479A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025116865A1 (en) * 2023-11-29 2025-06-05 Akdaş Si̇lah Anoni̇m Şi̇rketi̇ A new assembly for fully automatic firing in firearms

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224758A (en) * 1939-03-10 1940-12-10 Savage Arms Corp Release mechanism for semiautomatic firearms
US3950876A (en) * 1974-03-12 1976-04-20 J. G. Anschutz Gmbh Trigger device for fire arms particularly competition fire arms
DE4125148A1 (de) * 1991-07-30 1993-02-04 Gerold Domhan Abzugseinrichtung fuer schusswaffen
US6634129B1 (en) * 2000-08-22 2003-10-21 Richard N. Freeman, Jr. Modified bolt assembly and firing mechanism for an MG 34 Mauser rifle
WO2014084757A1 (ru) * 2012-11-27 2014-06-05 Общество С Ограниченной Ответственностью "Промтехнология" Спусковой механизм

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224758A (en) * 1939-03-10 1940-12-10 Savage Arms Corp Release mechanism for semiautomatic firearms
US3950876A (en) * 1974-03-12 1976-04-20 J. G. Anschutz Gmbh Trigger device for fire arms particularly competition fire arms
DE4125148A1 (de) * 1991-07-30 1993-02-04 Gerold Domhan Abzugseinrichtung fuer schusswaffen
US6634129B1 (en) * 2000-08-22 2003-10-21 Richard N. Freeman, Jr. Modified bolt assembly and firing mechanism for an MG 34 Mauser rifle
WO2014084757A1 (ru) * 2012-11-27 2014-06-05 Общество С Ограниченной Ответственностью "Промтехнология" Спусковой механизм

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025116865A1 (en) * 2023-11-29 2025-06-05 Akdaş Si̇lah Anoni̇m Şi̇rketi̇ A new assembly for fully automatic firing in firearms

Also Published As

Publication number Publication date
IT201800003479A1 (it) 2019-09-13
EP3540360B1 (de) 2020-10-14

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