WO2024069657A1 - Trigger group for a pistol and pistol comprising said trigger group - Google Patents

Trigger group for a pistol and pistol comprising said trigger group Download PDF

Info

Publication number
WO2024069657A1
WO2024069657A1 PCT/IT2022/000051 IT2022000051W WO2024069657A1 WO 2024069657 A1 WO2024069657 A1 WO 2024069657A1 IT 2022000051 W IT2022000051 W IT 2022000051W WO 2024069657 A1 WO2024069657 A1 WO 2024069657A1
Authority
WO
WIPO (PCT)
Prior art keywords
trigger
lever
arm
pistol
firing pin
Prior art date
Application number
PCT/IT2022/000051
Other languages
French (fr)
Inventor
Simone INVERARDI
Original Assignee
Revo Arms Srl
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 Revo Arms Srl filed Critical Revo Arms Srl
Priority to PCT/IT2022/000051 priority Critical patent/WO2024069657A1/en
Publication of WO2024069657A1 publication Critical patent/WO2024069657A1/en

Links

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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/64—Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers
    • F41A17/72—Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers trigger-operated, i.e. the movement of the trigger bringing a firing-pin safety into inoperative position during the firing
    • 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
    • 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

Definitions

  • Trigger group for a pistol and pistol comprising said trigger group
  • the present invention relates to the firearms field.
  • the present invention relates to a trigger group for a pistol, preferably, but not exclusively, a pistol of the semi-automatic type.
  • the present invention also relates to a pistol comprising said trigger group.
  • firearms such as pistols are provided with a trigger group comprising a trigger and a lever of the trigger to allow the shot.
  • a trigger group comprising a trigger and a lever of the trigger to allow the shot.
  • the firing pin is released forward by the compression elastic force of a spring associated therewith, striking the rear side of the bullet, where the primer is present, with its front end. Percussion causes the primer to explode and then the shot with the bullet coming out of the pistol barrel.
  • the trigger group is configured so that the firing pin is kept in the rest position in opposition to the force exerted by the aforementioned spring directly by the trigger lever by engaging the same with a lower appendix of the firing pin.
  • accuracy rate of accuracy
  • Korean patent application KR101937775 describes a trigger group for a pistol comprising a trigger having an end hinged to the frame of the pistol, a lever of the trigger having an end coupled to the trigger and another end facing towards the rear part of the pistol, an insertion block of the rear guide inserted and installed on the rear part of the pistol, and a trigger element configured to constrain the appendix of a firing pin installed in a receiving groove and to rotate by pressing a certain angle by means of the action of the trigger and of the lever of the trigger so as to release the firing pin.
  • the above application KR 101937775 reports that the trigger group has an improved structure that allows activating the trigger with less force and that can be made more accurately.
  • the main purpose of the present invention is to provide a trigger group for a pistol having an improved structure that allows increasing its reliability, for example in terms of operating consistency, as well as improving shooting accuracy.
  • Another purpose of the present invention is to provide a pistol comprising a trigger group as above.
  • a further purpose of the present invention is to provide a trigger group and a pistol comprising said trigger group which, besides having the above indicated features, may be produced in a simple manner and at low costs.
  • a trigger group for a pistol comprising a trigger, a movable trigger lever in rotation between a position in which it is adapted to engage with a firing pin of said pistol and a position in which it is adapted to disengage from said firing pin, and a connection lever hinged at an end thereof to said trigger and having, at the opposite end, an appendix comprising a first arm that is operatively connected to said trigger lever, and a second arm that is operatively connected to a reset spring, the connection lever being movable between an advanced position in which said trigger lever is in said engagement position, and a retracted position obtained by activating said trigger wherein said connection lever is able to push said trigger lever in rotation so as to displace it from its engagement position to its disengagement position.
  • the first arm of the appendix of the connection lever has a first portion having a surface adapted to abut against a front surface of said trigger lever in the retracted position of the connection lever, and a second portion adapted to abut against a lower surface of the trigger lever.
  • the trigger lever has a side projection having said front surface and said lower surface.
  • the appendix of the connection lever has a third arm opposite the above second arm and extended above the aforementioned first arm.
  • the reset spring is tilted according to a predefined angle, said angle being preferably of 45°.
  • the trigger lever comprises a torsion spring pivoted thereto and is rotatable from said engagement position to said disengagement position under the thrust of said connection lever in opposition to the thrust force exerted by said torsion spring while it may freely rotate from said disengagement position to said engagement position under the thrust of said torsion spring.
  • the trigger lever comprises an upper end tract adapted to engage with the firing pin, the above side projection adapted to contact said abutment surface of the first portion of the first arm of the appendix of the connection lever, and a lower projection adapted to act as end stroke when said trigger lever reaches said rest position.
  • a pistol comprising a base frame, a slide internally provided with a firing pin, said slide and said firing pin both longitudinally sliding on said base frame between a rest or reset advanced position and a retracted position, a tension spring adapted to push said firing pin towards said advanced position and a trigger group having the above indicated features.
  • the slide of the pistol has a slide below, which is able to intercept the appendix of the connection lever, in particular the above third arm of the appendix, while the slide draws back, causes the connection lever to lower and at the same time the first arm of the appendix of the connection lever to disengage / detach from the trigger lever.
  • FIG. 1 shows a perspective view of a pistol according to an embodiment of the invention
  • FIG. 4 shows a schematic view of a trigger group according to the invention along with a firing pin of a pistol, said trigger group being shown in a rest or reset position;
  • FIG. 5 shows a schematic view of the trigger group of Figure 4 along with the firing pin, said trigger group being shown in an operating position thereof when the trigger is being activated;
  • FIG. 6 and 7 each show a schematic view of the trigger group of Figure 4 along with a portion of the pistol comprising the slide and the firing pin, said trigger group being shown in an operating position thereof successive to the activation of the trigger while the slide is drawing back;
  • FIG. 8 and 9 each show a view of a detail of the trigger group of Figure 4 in the operating condition depicted in Figures 6 and 7;
  • FIG. 10 shows a schematic view of the trigger group of Figure 4 along with a portion of the pistol comprising the slide and the firing pin, said trigger group being shown in an operating position thereof successive to the activation of the trigger and to the slide drawing back;
  • FIG. 11 shows a schematic view of the trigger group of Figure 4 along with the firing pin, said trigger group being shown going back to its rest or reset position further to the trigger being released.
  • the pistol 1 is of the semi-automatic type and comprises a base frame 2, a barrel 3 extended longitudinally on a front part of said frame 2 and a slide 4 sliding longitudinally on the frame 2 and on the barrel 3 between a rest or reset advanced position and a retracted position.
  • the slide 4 internally has a channel 5 extended longitudinally on a rear part of the frame 2 and forming a housing seat for a firing pin 6, the channel 5 being aligned to the barrel 3 (same longitudinal axis).
  • the frame 2 comprises a grip at the back having a cavity that is open below for inserting an ammunition magazine 8 (bullets), a trigger guard 9 that defines a space 10 internally where the trigger 21 is located and that is adapted to allow inserting a user’s finger to activate said trigger 21 and a front portion 12 in which a cavity for housing a recoil spring (not shown) is defined.
  • the firing pin 6 slides in the channel 5 between the retracted position and the advanced position and has a lower appendix 6a located close to the rear end thereof. Moreover, a tension spring (not shown) is associated with the firing pin 6, said tension spring, in the absence of constraints on the firing pin 6, tends to push the firing pin 6 towards the advanced position so that the same can hit the primer of an ammunition (bullet) coming from the magazine 8 and arranged in the barrel 3.
  • the firing pin 6 in the retracted position thereof, the firing pin 6 is engaged through its lower appendix 6a to a trigger group 20 of the pistol 1 (described in detail hereinafter) in opposition to the elastic force exerted by the spring associated therewith (which is in a compressed state in said position of the firing pin 6) whereas, when the trigger 21 is being activated, the firing pin 6 is disengaged from the trigger group 20 and pushed by the above spring towards the advanced position so that the firing pin 6 may hit the primer of the ammunition (bullet) coming from the magazine 1 1 and arranged in the barrel 3 (as it will be illustrated hereinafter more in detail) .
  • the trigger group 20 comprises the trigger 21, a movable trigger lever 22 in rotation between an engagement position with the firing pin 6 and a disengagement position with said firing pin 6, and a connection lever 23 arranged between the trigger 21 and the trigger lever 22.
  • the trigger 21 is hinged to the frame 2 through a fixing pin 24 so as to be rotatable about said pin 24.
  • connection lever 23 is hinged at an end to the trigger 21 through a pin 25 and, at the opposite free end, it is fixed to an end of a traction reset spring 26 which, in turn, is fixed to the frame 2 at the opposite end thereof.
  • the traction reset spring 26 is tilted (with reference to the longitudinal axis of the barrel 3 of the pistol) by a predefined angle, preferably of about 45°, so that the spring 26 may push the connection lever 23 upwards (so as to keep it in a raised position) and towards the front part of the pistol 1 (so as to allow the trigger 21 to be reset) .
  • connection lever 23 has, at the free end thereof, an appendix extended substantially vertically and at the back, the appendix comprising a first arm (or first upper arm) 27 extended at the back substantially parallel to the longitudinal axis of the barrel 3, a second arm (or lower arm) 28 which an end of the reset spring 26 is fixed to, and a third arm (or second upper arm) 29 opposite the second arm 28 and extended above the first arm 27.
  • the first arm 27 is operatively connected to the trigger lever 22 and has a substantially “L” shape comprising a first portion 27a having a substantially vertical extension with a surface adapted to abut against or to contact the front surface 33a of a side projection 33 formed on the trigger lever 22, and a second portion 27b having a substantially horizontal (longitudinal) extension adapted to abut against or to contact a lower surface 33b of the side projection 33 formed on the trigger lever 22.
  • the third arm 29 of the appendix is instead adapted to be intercepted by the slide 4 while the same is drawing back towards its rest/ reset position, as it will be better explained hereinafter, so as to cause the connection lever 23 to lower and at the same time the first arm 27 of the appendix of the connection lever 23 to disengage/ detach from the trigger lever 22.
  • connection lever 23 is movable between an advanced position in which the trigger lever 22 engages the lower appendix 6a of the firing pin 6 and axially (longitudinally) spaced apart from the abutment surface of the first portion 27a of the first arm 27, and a retracted position obtained by activating the trigger 21 wherein the connection lever 23 is able to push the trigger lever 22 by abutting the first portion 27a of the first arm 27 against the front surface 33a of the projection 33 of the trigger lever so as to disengage the trigger lever 22 from the firing pin 6 keeping it in the disengagement position.
  • the trigger lever 22 is hinged to the frame 2 through a pin 30 and comprises a torsion spring pivoted thereto (not shown). Therefore, the trigger lever 22 is rotatable about the pin 30 from the engagement position to the disengagement position with the firing pin 6 under the thrust of the connection lever 23 in opposition to the thrust force exerted by the above torsion spring whereas, in the absence of constraints, it may rotate freely from the disengagement position to the engagement position with the firing pin 6 under the thrust of the above torsion spring.
  • the trigger lever 22 comprises an upper end tract 31 adapted to engage with the appendix 6a of the firing pin 6 in the retracted position thereof so as to prevent it from advancing towards its advanced position due to the thrust of the spring associated therewith, the above side projection 33 adapted to contact with own front surface 33a the abutment surface of the first portion 27a of the first arm 27 of the appendix of the connection lever 23 when the same reaches its retracted position obtained by activating the trigger 21, and a lower projection 34 adapted to abut against a vertical surface (not shown) of the frame 2 when the trigger lever 22 reaches its rest position.
  • connection lever 23 is kept in its advanced position through the reset spring 26 which also maintains the appendix of the lever 23 in a raised position. Thanks to the engagement of the second portion 27b of the first arm 27 of the appendix with the projection 33 of the trigger lever, the connection lever 23 is prevented from overtaking the trigger lever 22 pushed by the reset spring 26.
  • the trigger lever 22 is kept, through the respective torsion spring, in its engagement position with the upper end tract 31 that is in a raised position engaging with the lower appendix 6a of the firing pin (also in its rest or reset position) and the lower projection 34 in contact with the abutment vertical surface of the frame 2.
  • connection lever 23 When the trigger 21 is activated/ pressed by the user at the time of the shot ( Figure 5), the same rotates about a pin 24 (Arrow A), causing the connection lever 23 to displace to its retracted position. As a result, the connection lever 23, in turn, abuts through the first portion 27a of the upper arm 27 of the appendix against the front surface 33a of the side projection 33 of the trigger lever 22 and pushes the latter in rotation about the pin 30 causing the upper end tract 31 of the trigger lever 22 to disengage with the lower appendix 6a of the firing pin 6.
  • the firing pin 6 free from the constraint with the trigger lever 22 advances towards the barrel 3 under the thrust of the respective compression spring hitting the primer of an ammunition (bullet) coming from the magazine 8 and arranged in the barrel 3.
  • the explosion of the primer involves the firing of the bullet that comes out of the muzzle of the barrel 3 and also generates a recoil force that makes the slide 4 move back with the respective firing pin 6 (Arrow C in Figures 6 and 7).
  • the slide 4 is provided below with a ramp 35.
  • Said ramp 35 is able to intercept the third arm 29 of the appendix of the connection lever 23 while the slide 4 draws back further to the shot causing the connection lever 23 to lower in opposition to the thrust upwards exerted by the reset spring 26, as depicted in particular in Figure 7 (Arrow D).
  • first arm 27 of the appendix of the connection lever 23 to disengage/ detach, in particular the first portion 27a of the first arm 27 to detach from the front surface 33a of the side projection 33 of the trigger lever 22 and the second portion 27b of the first arm 27 to detach from the lower surface 33b of the side projection 33 of the trigger lever 22 (see Figure 8).
  • the trigger lever 22, freed from the above constraints, may freely rotate about the pin 30 going back to its own engagement position with the firing pin 6 under the thrust of the respective torsion spring with the lower projection 34 abutting against a surface (not shown) of the frame 2 ( Figure 9, Arrow E).
  • the advancement of the slide 4 implies that the ramp 35 does no longer press onto the appendix of the connection lever 23 so that the same is pushed upwards and forward through the reset spring 26 towards its advanced position ( Figure 11, Arrow F). Therefore, by releasing the trigger 21, the latter advances due to the thrust of the aforementioned reset spring 26 (Figure 11, Arrow G) through the connection lever 23, which in turn goes back to the advanced and raised position to push the trigger lever 22 again in a new firing cycle.
  • the trigger group and the pistol according to the invention attain the intended purposes and achieve considerable advantages over the prior art.
  • the trigger group according to the invention has an improved structure and high reliability, in particular in terms of constancy of operation, which also allows improving shooting accuracy.
  • the trigger in the release phase is only pushed by the tilted reset spring and this allows obtaining a constant and fluid movement unlike known trigger groups in which the firing pin, pushed forward by the return of the slide, engages the connection lever and pushes said trigger forward.
  • the thrust of the firing pin to the trigger lever gives the latter a tendency to rotate opposite the release rotation, thus making the engagement between them safe even in the event of a fall of the weapon.
  • the trigger group and the pistol according to the invention do not involve structural complications with respect to the prior art and can be produced in a simple way and at low costs, with conventional techniques.
  • the trigger group according to the invention involves a relatively reduced number of components which can be advantageously made by means of MIM (Metal Injection Moulding) technology.

Abstract

A trigger group (20) for a pistol (1) is herein described, which comprises a trigger (21), a movable trigger lever (22) in rotation between a position in which it is adapted to engage with a firing pin (6) of said pistol (1) and a position in which it is adapted to disengage from said firing pin (6), and a connection lever (23) that is hinged at an end thereof to said trigger (21) and having, at the opposite end, an appendix comprising a first arm (27) that is operatively connected to said trigger lever (22), and a second arm (28) that is operatively connected to a reset spring (26), said connection lever (23) being movable between an advanced position in which said trigger lever (22) is in said engagement position, and a retracted position obtained by activating said trigger (21) in which said connection lever (23) is bale to push said trigger lever (22) in rotation so as to displace it from its engagement position to its disengagement position.

Description

Title: Trigger group for a pistol and pistol comprising said trigger group
DESCRIPTION
Field of application
In its more general aspect, the present invention relates to the firearms field.
In particular, the present invention relates to a trigger group for a pistol, preferably, but not exclusively, a pistol of the semi-automatic type.
The present invention also relates to a pistol comprising said trigger group.
Prior art
As it is known, firearms such as pistols are provided with a trigger group comprising a trigger and a lever of the trigger to allow the shot. Indeed, when the user presses the trigger of the pistol, the firing pin is released forward by the compression elastic force of a spring associated therewith, striking the rear side of the bullet, where the primer is present, with its front end. Percussion causes the primer to explode and then the shot with the bullet coming out of the pistol barrel.
Conventionally, the trigger group is configured so that the firing pin is kept in the rest position in opposition to the force exerted by the aforementioned spring directly by the trigger lever by engaging the same with a lower appendix of the firing pin. However, in this way, constant pressure is maintained on the trigger lever which negatively affects accuracy (rate of accuracy), such as the direction of flight of the bullet since a force is applied to the user’s hand during the firing process.
Korean patent application KR101937775 describes a trigger group for a pistol comprising a trigger having an end hinged to the frame of the pistol, a lever of the trigger having an end coupled to the trigger and another end facing towards the rear part of the pistol, an insertion block of the rear guide inserted and installed on the rear part of the pistol, and a trigger element configured to constrain the appendix of a firing pin installed in a receiving groove and to rotate by pressing a certain angle by means of the action of the trigger and of the lever of the trigger so as to release the firing pin. The above application KR 101937775 reports that the trigger group has an improved structure that allows activating the trigger with less force and that can be made more accurately.
However, the trigger group described in the above application KR10 1937775 turns out to be somewhat complicated from the constructive point of view.
The main purpose of the present invention is to provide a trigger group for a pistol having an improved structure that allows increasing its reliability, for example in terms of operating consistency, as well as improving shooting accuracy.
Another purpose of the present invention is to provide a pistol comprising a trigger group as above.
A further purpose of the present invention is to provide a trigger group and a pistol comprising said trigger group which, besides having the above indicated features, may be produced in a simple manner and at low costs.
Summary of the invention
These and other purposes are primarily attained by a trigger group for a pistol comprising a trigger, a movable trigger lever in rotation between a position in which it is adapted to engage with a firing pin of said pistol and a position in which it is adapted to disengage from said firing pin, and a connection lever hinged at an end thereof to said trigger and having, at the opposite end, an appendix comprising a first arm that is operatively connected to said trigger lever, and a second arm that is operatively connected to a reset spring, the connection lever being movable between an advanced position in which said trigger lever is in said engagement position, and a retracted position obtained by activating said trigger wherein said connection lever is able to push said trigger lever in rotation so as to displace it from its engagement position to its disengagement position.
In an embodiment, the first arm of the appendix of the connection lever has a first portion having a surface adapted to abut against a front surface of said trigger lever in the retracted position of the connection lever, and a second portion adapted to abut against a lower surface of the trigger lever.
In an embodiment, the trigger lever has a side projection having said front surface and said lower surface.
In an embodiment, the appendix of the connection lever has a third arm opposite the above second arm and extended above the aforementioned first arm.
In an embodiment, the reset spring is tilted according to a predefined angle, said angle being preferably of 45°.
In an embodiment, the trigger lever comprises a torsion spring pivoted thereto and is rotatable from said engagement position to said disengagement position under the thrust of said connection lever in opposition to the thrust force exerted by said torsion spring while it may freely rotate from said disengagement position to said engagement position under the thrust of said torsion spring.
In an embodiment, the trigger lever comprises an upper end tract adapted to engage with the firing pin, the above side projection adapted to contact said abutment surface of the first portion of the first arm of the appendix of the connection lever, and a lower projection adapted to act as end stroke when said trigger lever reaches said rest position. The above purposes are also attained by a pistol comprising a base frame, a slide internally provided with a firing pin, said slide and said firing pin both longitudinally sliding on said base frame between a rest or reset advanced position and a retracted position, a tension spring adapted to push said firing pin towards said advanced position and a trigger group having the above indicated features.
In an embodiment, the slide of the pistol has a slide below, which is able to intercept the appendix of the connection lever, in particular the above third arm of the appendix, while the slide draws back, causes the connection lever to lower and at the same time the first arm of the appendix of the connection lever to disengage / detach from the trigger lever.
Further features and advantages of the present invention will become more apparent from the following description which is given by way of non-limiting example also with reference to the given enclosed drawings.
Brief description of the drawings
In the enclosed drawings:
- Figure 1 shows a perspective view of a pistol according to an embodiment of the invention;
- Figures 2 and 3 each show a side view of the pistol of Figure 1;
- Figure 4 shows a schematic view of a trigger group according to the invention along with a firing pin of a pistol, said trigger group being shown in a rest or reset position;
- Figure 5 shows a schematic view of the trigger group of Figure 4 along with the firing pin, said trigger group being shown in an operating position thereof when the trigger is being activated;
- Figures 6 and 7 each show a schematic view of the trigger group of Figure 4 along with a portion of the pistol comprising the slide and the firing pin, said trigger group being shown in an operating position thereof successive to the activation of the trigger while the slide is drawing back;
- Figures 8 and 9 each show a view of a detail of the trigger group of Figure 4 in the operating condition depicted in Figures 6 and 7;
- Figure 10 shows a schematic view of the trigger group of Figure 4 along with a portion of the pistol comprising the slide and the firing pin, said trigger group being shown in an operating position thereof successive to the activation of the trigger and to the slide drawing back;
- Figure 11 shows a schematic view of the trigger group of Figure 4 along with the firing pin, said trigger group being shown going back to its rest or reset position further to the trigger being released.
Detailed description
Hereinafter in the present description, the terms “upper”, “lower”, “outer”, “inner” “front”, “rear”, “backward”, “advanced” relate to the orientation of a particular embodiment as shown in the respective figures.
Moreover, in the present description, it is to be understood that the technical features previously and hereinafter specifically described may be combined with each other in any way, forming further embodiments of the present invention which are not specifically described for the sake of brevity but falling within the scope of the present invention.
With reference to the above Figures, a pistol according to the invention is indicated as a whole with reference number 1.
The pistol 1 is of the semi-automatic type and comprises a base frame 2, a barrel 3 extended longitudinally on a front part of said frame 2 and a slide 4 sliding longitudinally on the frame 2 and on the barrel 3 between a rest or reset advanced position and a retracted position. The slide 4 internally has a channel 5 extended longitudinally on a rear part of the frame 2 and forming a housing seat for a firing pin 6, the channel 5 being aligned to the barrel 3 (same longitudinal axis).
The frame 2 comprises a grip at the back having a cavity that is open below for inserting an ammunition magazine 8 (bullets), a trigger guard 9 that defines a space 10 internally where the trigger 21 is located and that is adapted to allow inserting a user’s finger to activate said trigger 21 and a front portion 12 in which a cavity for housing a recoil spring (not shown) is defined.
The firing pin 6 slides in the channel 5 between the retracted position and the advanced position and has a lower appendix 6a located close to the rear end thereof. Moreover, a tension spring (not shown) is associated with the firing pin 6, said tension spring, in the absence of constraints on the firing pin 6, tends to push the firing pin 6 towards the advanced position so that the same can hit the primer of an ammunition (bullet) coming from the magazine 8 and arranged in the barrel 3.
More in detail, in the retracted position thereof, the firing pin 6 is engaged through its lower appendix 6a to a trigger group 20 of the pistol 1 (described in detail hereinafter) in opposition to the elastic force exerted by the spring associated therewith (which is in a compressed state in said position of the firing pin 6) whereas, when the trigger 21 is being activated, the firing pin 6 is disengaged from the trigger group 20 and pushed by the above spring towards the advanced position so that the firing pin 6 may hit the primer of the ammunition (bullet) coming from the magazine 1 1 and arranged in the barrel 3 (as it will be illustrated hereinafter more in detail) .
According to an aspect of the present invention, the trigger group 20 comprises the trigger 21, a movable trigger lever 22 in rotation between an engagement position with the firing pin 6 and a disengagement position with said firing pin 6, and a connection lever 23 arranged between the trigger 21 and the trigger lever 22.
More in detail, the trigger 21 is hinged to the frame 2 through a fixing pin 24 so as to be rotatable about said pin 24.
The connection lever 23 is hinged at an end to the trigger 21 through a pin 25 and, at the opposite free end, it is fixed to an end of a traction reset spring 26 which, in turn, is fixed to the frame 2 at the opposite end thereof.
Advantageously, according to an aspect of the present invention, the traction reset spring 26 is tilted (with reference to the longitudinal axis of the barrel 3 of the pistol) by a predefined angle, preferably of about 45°, so that the spring 26 may push the connection lever 23 upwards (so as to keep it in a raised position) and towards the front part of the pistol 1 (so as to allow the trigger 21 to be reset) .
According to another aspect of the present invention, the connection lever 23 has, at the free end thereof, an appendix extended substantially vertically and at the back, the appendix comprising a first arm (or first upper arm) 27 extended at the back substantially parallel to the longitudinal axis of the barrel 3, a second arm (or lower arm) 28 which an end of the reset spring 26 is fixed to, and a third arm (or second upper arm) 29 opposite the second arm 28 and extended above the first arm 27.
The first arm 27 is operatively connected to the trigger lever 22 and has a substantially “L” shape comprising a first portion 27a having a substantially vertical extension with a surface adapted to abut against or to contact the front surface 33a of a side projection 33 formed on the trigger lever 22, and a second portion 27b having a substantially horizontal (longitudinal) extension adapted to abut against or to contact a lower surface 33b of the side projection 33 formed on the trigger lever 22. The third arm 29 of the appendix is instead adapted to be intercepted by the slide 4 while the same is drawing back towards its rest/ reset position, as it will be better explained hereinafter, so as to cause the connection lever 23 to lower and at the same time the first arm 27 of the appendix of the connection lever 23 to disengage/ detach from the trigger lever 22.
More in detail, the connection lever 23 is movable between an advanced position in which the trigger lever 22 engages the lower appendix 6a of the firing pin 6 and axially (longitudinally) spaced apart from the abutment surface of the first portion 27a of the first arm 27, and a retracted position obtained by activating the trigger 21 wherein the connection lever 23 is able to push the trigger lever 22 by abutting the first portion 27a of the first arm 27 against the front surface 33a of the projection 33 of the trigger lever so as to disengage the trigger lever 22 from the firing pin 6 keeping it in the disengagement position.
Meanwhile, the engagement/ abutment of the second portion 27b with the lower surface 33b of the projection 33 of the trigger lever 22 limits the movement upwards of the connection lever 23 under the thrust of the reset spring 26.
The trigger lever 22 is hinged to the frame 2 through a pin 30 and comprises a torsion spring pivoted thereto (not shown). Therefore, the trigger lever 22 is rotatable about the pin 30 from the engagement position to the disengagement position with the firing pin 6 under the thrust of the connection lever 23 in opposition to the thrust force exerted by the above torsion spring whereas, in the absence of constraints, it may rotate freely from the disengagement position to the engagement position with the firing pin 6 under the thrust of the above torsion spring.
More in detail, the trigger lever 22 comprises an upper end tract 31 adapted to engage with the appendix 6a of the firing pin 6 in the retracted position thereof so as to prevent it from advancing towards its advanced position due to the thrust of the spring associated therewith, the above side projection 33 adapted to contact with own front surface 33a the abutment surface of the first portion 27a of the first arm 27 of the appendix of the connection lever 23 when the same reaches its retracted position obtained by activating the trigger 21, and a lower projection 34 adapted to abut against a vertical surface (not shown) of the frame 2 when the trigger lever 22 reaches its rest position.
As for the operation of the trigger group 20 according to the invention, in the rest or reset position shown for instance in Figure 4, the connection lever 23 is kept in its advanced position through the reset spring 26 which also maintains the appendix of the lever 23 in a raised position. Thanks to the engagement of the second portion 27b of the first arm 27 of the appendix with the projection 33 of the trigger lever, the connection lever 23 is prevented from overtaking the trigger lever 22 pushed by the reset spring 26.
Meanwhile, the trigger lever 22 is kept, through the respective torsion spring, in its engagement position with the upper end tract 31 that is in a raised position engaging with the lower appendix 6a of the firing pin (also in its rest or reset position) and the lower projection 34 in contact with the abutment vertical surface of the frame 2.
In this way, in the rest or reset position a certain distance is axially left between the first portion 27a bearing the abutment surface of the first arm 27 of the connection lever 23 and the trigger lever 22 which allows having a pre-stroke of the trigger 21 adapted to make the shooter feel when the connection lever 23 impacts the trigger lever 22 and therefore release the firing pin 6.
When the trigger 21 is activated/ pressed by the user at the time of the shot (Figure 5), the same rotates about a pin 24 (Arrow A), causing the connection lever 23 to displace to its retracted position. As a result, the connection lever 23, in turn, abuts through the first portion 27a of the upper arm 27 of the appendix against the front surface 33a of the side projection 33 of the trigger lever 22 and pushes the latter in rotation about the pin 30 causing the upper end tract 31 of the trigger lever 22 to disengage with the lower appendix 6a of the firing pin 6.
The thrust exerted onto the trigger lever 22 by the connection lever 23 due to the activation of the trigger 21 and the thrust upwards exerted by the reset spring 26 prevent the trigger lever 22 from going back to its engagement position with the firing pin 6 opposing the thrust of the torsion spring associated with the trigger lever 22.
Therefore, the firing pin 6 free from the constraint with the trigger lever 22 advances towards the barrel 3 under the thrust of the respective compression spring hitting the primer of an ammunition (bullet) coming from the magazine 8 and arranged in the barrel 3.
The explosion of the primer involves the firing of the bullet that comes out of the muzzle of the barrel 3 and also generates a recoil force that makes the slide 4 move back with the respective firing pin 6 (Arrow C in Figures 6 and 7).
According to another aspect of the present invention (Figures 6-10), the slide 4 is provided below with a ramp 35. Said ramp 35 is able to intercept the third arm 29 of the appendix of the connection lever 23 while the slide 4 draws back further to the shot causing the connection lever 23 to lower in opposition to the thrust upwards exerted by the reset spring 26, as depicted in particular in Figure 7 (Arrow D).
This implies the first arm 27 of the appendix of the connection lever 23 to disengage/ detach, in particular the first portion 27a of the first arm 27 to detach from the front surface 33a of the side projection 33 of the trigger lever 22 and the second portion 27b of the first arm 27 to detach from the lower surface 33b of the side projection 33 of the trigger lever 22 (see Figure 8).
Therefore, the trigger lever 22, freed from the above constraints, may freely rotate about the pin 30 going back to its own engagement position with the firing pin 6 under the thrust of the respective torsion spring with the lower projection 34 abutting against a surface (not shown) of the frame 2 (Figure 9, Arrow E).
The classic firing cycle then makes the slide 4 and the firing pin 6 advance again towards the barrel 3 (Figure 10). However, the firing pin 6 finding the trigger lever 22 in its engagement raised position is blocked with the upper end tract 31 of the trigger lever 22 that engages with the lower appendix 6a of the firing pin 6 whereas the slide 4 continues to advance by compressing the spring of the firing pin 6 so as to make it ready for the next firing cycle.
Moreover, the advancement of the slide 4 implies that the ramp 35 does no longer press onto the appendix of the connection lever 23 so that the same is pushed upwards and forward through the reset spring 26 towards its advanced position (Figure 11, Arrow F). Therefore, by releasing the trigger 21, the latter advances due to the thrust of the aforementioned reset spring 26 (Figure 11, Arrow G) through the connection lever 23, which in turn goes back to the advanced and raised position to push the trigger lever 22 again in a new firing cycle.
In light of the above, the trigger group and the pistol according to the invention attain the intended purposes and achieve considerable advantages over the prior art.
Indeed, the trigger group according to the invention has an improved structure and high reliability, in particular in terms of constancy of operation, which also allows improving shooting accuracy. In this regard, it should be noted that in the trigger group according to the invention, the trigger in the release phase is only pushed by the tilted reset spring and this allows obtaining a constant and fluid movement unlike known trigger groups in which the firing pin, pushed forward by the return of the slide, engages the connection lever and pushes said trigger forward. Moreover, in the trigger group according to the invention, the thrust of the firing pin to the trigger lever gives the latter a tendency to rotate opposite the release rotation, thus making the engagement between them safe even in the event of a fall of the weapon. Moreover, it should be noted that the trigger group and the pistol according to the invention do not involve structural complications with respect to the prior art and can be produced in a simple way and at low costs, with conventional techniques. In particular, the trigger group according to the invention involves a relatively reduced number of components which can be advantageously made by means of MIM (Metal Injection Moulding) technology.
A person skilled in the art may make numerous changes and variants to the trigger group and to the pistol according to the invention, anyway all comprised within the scope of protection of the enclosed claims.

Claims

1. Trigger group (20) for a pistol (1) comprising a trigger (21), a movable trigger lever (22) in rotation between a position in which it is adapted to engage with a firing pin (6) of said pistol (1) and a position in which it is adapted to disengage from said firing pin (6), and a connection lever (23) hinged at an end thereof to said trigger (21) and having, at the opposite end, an appendix comprising a first arm (27) that is operatively connected to said trigger lever (22), and a second arm (28) that is operatively connected to a reset spring (26), said connection lever (23) being movable between an advanced position in which said trigger lever (22) is in said engagement position, and' a retracted position obtained by activating said trigger (21) wherein said connection lever (23) is able to push said trigger lever (22) in rotation so as to displace it from its engagement position to its disengagement position.
2. Trigger group (20) according to claim 1, wherein said first arm (27) of the appendix of the connection lever (23) has a first portion (27a) having a surface adapted to abut against a front surface (33a) of said trigger lever (22) in the retracted position of said connection lever (23), and a second portion (27b) adapted to abut against a lower surface (33b) of said trigger lever (22).
3. Trigger group (20) according to claim 2, wherein said trigger lever (22) has a side projection (33) having said front surface (33a) and said lower surface (33b).
4. Trigger group (20) according to any one of the previous claims, wherein said appendix of the connection lever (23) has a third arm (29) opposite said second arm (28) and extended above said first arm (27).
5. Trigger group (20) according to any one of the previous claims, wherein said reset spring (26) is tilted according to a predefined angle, said angle being preferably of 45°.
6. Trigger group (20) according to any one of the previous claims, wherein said trigger lever (22) comprises a torsion spring pivoted thereto and is rotatable from said engagement position to said disengagement position under the thrust of said connection lever (23) in opposition to the thrust force exerted by said torsion spring while it may freely rotate from said disengagement position to said engagement position under the thrust of said torsion spring.
7. Trigger group (20) according to any one of the previous claims 3 to 6, wherein said trigger lever (22) comprises an upper end tract (31) adapted to engage with said firing pin (6), said side projection (33) adapted to contact said abutment surface of the first portion (27a) of said first arm (27) of the appendix of the connection lever (23), and a lower projection (34) adapted to act as end stroke when said trigger lever (22) reaches said rest position.
8. Pistol (1) comprising a base frame (2), a slide (4) internally provided with a firing pin (6), said slide and said firing pin both longitudinally sliding on said base frame (2) between a rest/ reset advanced position and a retracted position, a tension spring adapted to push said firing pin (6) towards said advanced position and a trigger group (20), wherein said trigger group (20) comprises a trigger (21), a movable trigger lever (22) that is in rotation between an engagement position with said firing pin (6) and a disengagement position with said firing pin (6), and a connection lever (23) hinged at an end thereof to said trigger (21) and having, at the opposite end, an appendix comprising a first arm (27) that is operatively connected to said trigger lever (22), and a second arm (28) that is operatively connected to a reset spring (26), said connection lever (23) being movable between an advanced position in which said trigger lever (22) is in engagement with said firing pin (6), and a retracted position obtained by activating said trigger (21) wherein said connection lever (23) is able to push said trigger lever (22) in rotation so as to disengage it from said firing pin (6) .
9. Pistol (1) according to claim 8, wherein said first arm (27) of the appendix of the connection lever (23) has a first portion (27a) having a surface adapted to abut against a front surface (33a) of said trigger lever (22) in the retracted position of said connection lever (23), and a second portion (27b) adapted to abut against a lower surface (33b) of said trigger lever (22).
10. Pistol (1) according to claim 9, wherein said trigger lever (22) has a side projection (33) having said front surface (33a) and said lower surface (33b).
11. Pistol (1) according to claim 8, 9 or 10, wherein said reset spring (26) is tilted according to a predefined angle, said angle being preferably of 45°.
12. Pistol (1) according to any one of the previous claims 8 to 11, wherein said trigger lever (22) comprises a torsion spring pivoted thereto and is rotatable from said engagement position to said disengagement position under the thrust of said connection lever (23) in opposition to the thrust force exerted by said torsion spring while it may freely rotate from said disengagement position to said engagement position under the thrust of said torsion spring.
13. Pistol (1) according to any one of the previous claims 10 to 12, wherein said trigger lever (22) comprises an upper end tract (31) adapted to engage with said firing pin (6), said side projection (33) adapted to contact said abutment surface of the first portion (27a) of said first arm (27) of the appendix of the connection lever (23), and an end stroke lower projection (34) adapted to abut against said frame (2) when said trigger lever (22) reaches said rest position.
14. Pistol (1) according to any one of the previous claims 8 to 13, wherein said appendix of the connection lever (23) has a third arm (29) opposite said second arm (28) and extended above said first arm (27).
15. Pistol (1) according to any one of the previous claims 8 to 14, wherein said slide (4) has a ramp (35) below, which is able to intercept said appendix of the connection lever (23), preferably said third arm (29) of the appendix, while said slide (4) draws back further to the shot, so as to cause the connection lever (23) to lower and at the same time the first arm (27) of said appendix of the connection lever (23) to disengage / detach from said trigger lever (22) .
PCT/IT2022/000051 2022-09-26 2022-09-26 Trigger group for a pistol and pistol comprising said trigger group WO2024069657A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2022/000051 WO2024069657A1 (en) 2022-09-26 2022-09-26 Trigger group for a pistol and pistol comprising said trigger group

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2022/000051 WO2024069657A1 (en) 2022-09-26 2022-09-26 Trigger group for a pistol and pistol comprising said trigger group

Publications (1)

Publication Number Publication Date
WO2024069657A1 true WO2024069657A1 (en) 2024-04-04

Family

ID=84369581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2022/000051 WO2024069657A1 (en) 2022-09-26 2022-09-26 Trigger group for a pistol and pistol comprising said trigger group

Country Status (1)

Country Link
WO (1) WO2024069657A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8572878B2 (en) * 2010-05-28 2013-11-05 Beretta Usa Corp. De-cocking mechanism for striker-fired semi-automatic pistols
US9383153B2 (en) * 2014-04-11 2016-07-05 Sturm, Ruger & Company, Inc. Fire control system for firearms
US20170059266A1 (en) * 2014-05-23 2017-03-02 Fabbrica D'armi Pietro Beretta S.P.A. Firearm with an improved arming member
KR101937775B1 (en) * 2018-11-27 2019-01-11 다산기공 주식회사 Trigger Assembly of Pistols

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8572878B2 (en) * 2010-05-28 2013-11-05 Beretta Usa Corp. De-cocking mechanism for striker-fired semi-automatic pistols
US9383153B2 (en) * 2014-04-11 2016-07-05 Sturm, Ruger & Company, Inc. Fire control system for firearms
US20170059266A1 (en) * 2014-05-23 2017-03-02 Fabbrica D'armi Pietro Beretta S.P.A. Firearm with an improved arming member
KR101937775B1 (en) * 2018-11-27 2019-01-11 다산기공 주식회사 Trigger Assembly of Pistols

Similar Documents

Publication Publication Date Title
US9383153B2 (en) Fire control system for firearms
US9915485B2 (en) Semi-automatic pistol
US6341442B1 (en) Double action pistol
US9021732B2 (en) Firearm trigger reset assist apparatus and method
AU2018422758B2 (en) Cased telescoped ammunition firearm with translating chamber
US6354032B1 (en) Trigger stop
US8756843B1 (en) Handheld firearms with indexed magazine and compact firing mechanism
US20160320155A1 (en) Firearm with safe axis firing pin and center aligned barrel
US8176836B2 (en) Double action short reset trigger system
US20170241729A1 (en) Bolt Catch for a Rifle
US11644261B2 (en) Trigger group for striker-fired firearms
US10415916B2 (en) Modified trigger assembly and method for actuating a repeated shot
US20230251050A1 (en) Trigger group for striker-fired firearms
US4471549A (en) Actuating mechanisms for small arms
US20120204712A1 (en) Dual action shotgun
US10584932B2 (en) Trigger-locking apparatus, system, and method for semiautomatic firearms
US4467698A (en) Angular shape firing pin for use with a collapsible toggle recoil in a hand held weapon
US10436531B2 (en) Recoil apparatus for firearms
US20210123699A1 (en) Apparatus and method to reduce muzzle rise in a firearm
WO2024069657A1 (en) Trigger group for a pistol and pistol comprising said trigger group
US3803740A (en) Cocking and ejection mechanism for firearms
US10852082B1 (en) Backward swept magazine for pistol
RU2814289C2 (en) Gun
US10473422B2 (en) Flobert cartridge pistol
CZ2005799A3 (en) Self-loading weapon with locked breech mechanism