EP4130640B1 - Tête de culasse pour une arme à feu - Google Patents

Tête de culasse pour une arme à feu Download PDF

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Publication number
EP4130640B1
EP4130640B1 EP21189286.4A EP21189286A EP4130640B1 EP 4130640 B1 EP4130640 B1 EP 4130640B1 EP 21189286 A EP21189286 A EP 21189286A EP 4130640 B1 EP4130640 B1 EP 4130640B1
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EP
European Patent Office
Prior art keywords
extractor
bolt
leaf spring
axis
bearing
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
EP21189286.4A
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German (de)
English (en)
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EP4130640C0 (fr
EP4130640A1 (fr
Inventor
Elmar Bilgeri
Michael Kriz
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Glock Technology GmbH
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Glock Technology GmbH
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.)
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Publication date
Priority to EP21189286.4A priority Critical patent/EP4130640B1/fr
Application filed by Glock Technology GmbH filed Critical Glock Technology GmbH
Priority to PCT/EP2022/070325 priority patent/WO2023011921A1/fr
Priority to BR112023023907A priority patent/BR112023023907A2/pt
Priority to IL308919A priority patent/IL308919A/en
Priority to CA3222232A priority patent/CA3222232A1/fr
Priority to US18/431,685 priority patent/US12235058B2/en
Publication of EP4130640A1 publication Critical patent/EP4130640A1/fr
Application granted granted Critical
Publication of EP4130640C0 publication Critical patent/EP4130640C0/fr
Publication of EP4130640B1 publication Critical patent/EP4130640B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
    • F41A15/12—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns
    • F41A15/14—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns the ejector being mounted on or within the bolt; Extractors per se

Definitions

  • the invention relates to a bolt head with an extractor for cartridges or cartridge cases of a firearm.
  • the closure head comprises a cylindrical body with a groove-shaped recess for receiving the extractor, as well as a spring element according to the preamble of claim 1 and the GB 183776 A .
  • the breech includes a sliding piece that is movably arranged in the housing, also called a breech carrier, and a breech head that can be rotated and displaced in the sliding piece along the barrel axis and around it.
  • a cartridge Before a shot can be fired, a cartridge is inserted from the magazine into the chamber.
  • the locking head In the course of cartridge feeding, the locking head is usually rotated during the locking process by the interaction of a control bolt, which is arranged on the locking head, with a control link, which is arranged in the slider. The bottom of the case comes into contact with the bottom of the bolt head.
  • a locking section of the locking head, or the locking lugs arranged thereon, interact with corresponding locking lugs of the barrel or a barrel sleeve in order to lock the weapon to the outside for firing shots.
  • an extractor is arranged on the breech head in order to remove the fired cartridge case from the chamber after the shot has been fired as part of the unlocking process.
  • this extractor should release the cartridge case again as easily as possible at a predefined position of the slider or the bolt head, which is usually supported by an ejector.
  • Naturally undesirable are ejection disturbances that lead to feed jams when the next cartridge is advanced again and drawn in.
  • a leaf spring was used as an alternative to pretension the extractor.
  • a U-shaped leaf spring was used, which has an inwardly projecting extractor claw on one side.
  • the CH 214423 A shows a T-shaped extractor device, the long leg being designed as a kind of leaf spring and acting as a spring element and extractor at the same time.
  • a curved leaf spring is used for preload a pin-shaped extractor is used on its back, while in the GB 160773 A a straight leaf spring acts on the back of the extractor.
  • an extractor device with a leaf spring which is arranged in a locking head with a cylindrical body in a groove-shaped recess.
  • the locking head has - as is generally the case - a locking section with a shock base on the barrel side, on which several radially outwardly projecting locking lugs and a groove-shaped recess running backwards with an undercut for receiving the extractor and the leaf spring are formed.
  • the extractor When viewed in the installed state, the extractor has a first lever arm on the barrel side with an inwardly projecting, hook-shaped extractor claw, and in a central section a bearing extension that projects inwards, i.e. in the direction of the barrel axis.
  • the extractor is mounted on the body with this bearing extension so that it can pivot around an edge.
  • This edge acts as a kind of bearing point or extractor axis, around which the leaf spring biases the extractor inwards by means of a second lever arm, which projects backwards against the direction of travel as a spring bearing.
  • the bearing extension is opened to the front, which is necessary to brace the extractor forward by pressing in the leaf spring.
  • leaf springs are relatively sensitive to excessive pressure.
  • forces that are transverse to the intended loading direction of the leaf spring for example in the direction of the barrel axis, can lead to compression or even This can lead to destruction of the leaf spring, which means that functional reliability is no longer guaranteed.
  • the pull-out device is constructed as simply as possible, i.e. preferably with as few components as possible, and/or enables relatively simple (dis)assembly.
  • the closure head has an extractor device which includes an extractor and a leaf spring.
  • the bearing extension on the extractor is designed to be hook-shaped so that it rests on an extractor axis.
  • the bearing extension has a bearing opening that is open to the rear, i.e. against the direction of travel.
  • the bearing extension On its front side, i.e. in the direction of travel, the bearing extension includes a contact surface for contact with a stop surface of the body, which contacts the extractor under tensile load.
  • the locking head also has a body on which a groove-shaped recess is provided to accommodate the leaf spring and the extractor.
  • This recess is at least partially opened laterally on one side tangential to the circumferential direction via an insertion area.
  • the recess merges laterally and/or backwards into an undercut, which serves to hold or as an abutment for the spring element, preferably a leaf spring, in the body of the closure head.
  • the body also has a recess in the area of the extractor axis, about which the extractor is pivotally mounted in the installation situation, for receiving the bearing extension.
  • This depression can be designed as one or more partial depressions relative to an imaginary, preferably tangential, plane of the recess.
  • the extractor is first assembled by pivoting the bearing extension around the extractor axis. Due to the rear-facing bearing opening, the extractor can move forward within the limits of the recess and is still held radially, i.e. in the normal direction outwards, by the bearing extension on the extractor axis.
  • the leaf spring is installed by pivoting laterally into the recess.
  • this structure has the advantage that the forces on the extractor during the closing movement can be diverted into the locking head via the extractor axis and are not transferred to the leaf spring, which means that damage to the leaf spring caused by forces in the longitudinal direction can be avoided. Furthermore, when the extractor is under tensile load when the locking head returns, force is transferred from the contact surface to the stop surface, whereby the extractor axis is relieved, a relatively low surface pressure occurs on the body and thus force is introduced in a way that is gentle on the material. These measures can significantly increase the service life of the locking head.
  • the terms left, right, top, bottom, front and back always refer to the shooting direction of the firearm from the shooter's perspective when it is held ready to fire.
  • the terms "front”, “rear”, “top”, “bottom”, “inside”, “outside” and so on are used in the common form and with reference to the Item in its usual position of use, used. This means that the muzzle of the barrel of the weapon is “at the front”, that the breech or slide is moved “backwards” by the explosion gases, etc.
  • Transverse to a direction essentially means a direction rotated by 90° to it.
  • the locking head has a running direction designated 91, passing through the barrel axis 9.
  • a normal direction 93 pointing outwards, in the selected representation "upwards" is indicated and a rotation around the running axis 9 or the running direction 91 follows in the circumferential direction 92.
  • Fig. 1 is a locking head 1 in two side views, with direction 91 to the left ( Fig. 1a ) or direction 91 to the right ( Fig. 1b ) shown schematically.
  • the locking head 1 has a locking section 13 on the barrel side on the cylindrical body 11 with a plurality of locking lugs 14 projecting radially outwards.
  • Fig. 1a an exemption can be seen on the body 11, in which an ejector 5 is movably inserted in the longitudinal direction.
  • the ejector 5 is designed to strike the base of a cartridge case 4 parallel to the barrel axis 9 at an edge region of the butt base 15 through the ejector opening 51.
  • an outwardly projecting control bolt 17, which in this case is shown formed integrally with the body 11.
  • Fig. 1b is the bolt head from the opposite side Fig. 1a viewed in assembled condition.
  • the recess 12 can be viewed as essentially groove-shaped. It preferably runs parallel to the running axis 9 as a flat surface, with inclined planes relative to the running axis 9 also being possible, for example in order to specifically adjust the preload and/or the play of the leaf spring 3.
  • the recess for receiving the leaf spring 3 is at least partially opened laterally on one side tangential to the circumferential direction via an insertion area 122.
  • the recess 12 merges towards the rear into an undercut 121, in which the rear end section of the leaf spring 3 is received.
  • the undercut 121 can be opened laterally - as shown - which makes it even easier to pivot in the leaf spring 3.
  • Fig. 2 the closure head 1 is shown in a kind of exploded view.
  • the extractor 2 when viewed in the installed state, has a first and a second lever arm, as well as a bearing extension 23 projecting inwards from a central section.
  • the bearing extension 23 serves to rest on and for limited tilting around an extractor axis 21 ( Fig. 1b , this means both the axis of rotation itself and its design as a shaft, pin, etc.) and is hook-shaped with the bearing opening 231 open to the rear, i.e. against the direction of rotation 91 ( Fig. 7a ) educated.
  • an inwardly projecting, hook-shaped extractor claw 22 is arranged on the first lever arm, which serves to engage in the edge of a cartridge case 4. It is also very clear from these illustrations that the extractor 2 has a second, rearwardly projecting lever arm, which serves as a spring bearing 24, on which the leaf spring 3 engages on the underside when installed and pushes it outwards. This serves to pretension the extractor claw 22 inwards, in the direction of the barrel axis 9.
  • a spring holder 241 is provided on the underside of the spring bearing 24 (also Fig. 2 ) on the underside of the spring bearing 24 (also Fig. 2 ) trained and can e.g Fig. 7c very good in combination with Figs. 1 and 8th be seen.
  • This spring receptacle 241 has the advantage that it can serve as a kind of insertion aid when assembling the leaf spring 3 and also serves as a lateral guide. Depending on the depth of the clearance, the spring holder 241 can even serve as an additional measure against unintentional slipping or shaking out of the front end section of the leaf spring 3. This can further improve the functionality of the firearm.
  • Fig. 2 The leaf spring 3 is also shown, which is shown in detail in Fig. 8 is shown in more detail and will be described further below.
  • the ejector 5 can also be seen in this illustration, although alternatively designed ejectors with the closure head 1 according to the invention or the extractor 2 can also be easily provided by a person skilled in the art.
  • the extractor axis 21 can be clearly seen, which is designed as a separate pin 25.
  • FIG. 2 Another central feature of the invention can be in Fig. 2 can be seen from the exploded view, according to which the body 11 in the area of the extractor axis 21 has a recess 16 for receiving the bearing extension 23 relative to an imaginary plane of the recess 12.
  • This recess 16 can be designed as a continuous pocket or in the form of several pocket-shaped partial recesses in the direction of the barrel axis 9, as shown in conjunction with Figs. 3 and 4 clearly visible.
  • the recess 16 is delimited towards the front in the running direction 91 by the impact base 15 or its rear wall, whereby a stop surface 183 for the extractor 2 is formed towards the front.
  • the bearing extension 23 has a corresponding contact surface 232 on its front, which serves to stop or support the stop surface 183 in the holding position.
  • the recess 16 is formed in the area of the extractor axis 21 relative to an imaginary plane of the recess 12. Contrary to the running direction 91, the recess 16, starting from the bearing axis 21, has sufficient free space so that the leaf spring 3 cannot be displaced when the cartridge case 4 is gripped, see also Fig. 6a to 6c , is possible. In this way, the extractor axis 21 can interact with the bearing extension 23 as a joint or pivot point for the two lever arms.
  • the recess 16 is delimited by an additional support area 18 extending from the bottom 15 backwards to the stop surface 183, which contributes to stiffening the closure head 1 and thereby reducing the elastic deformation during the closing or pulling-out process.
  • the support area 18 preferably has a longitudinal extent of 0.1 to 1.5 times, in particular 0.4 to 0.8 times, the average diameter of the body 11.
  • the support area 18, also very clearly visible in Fig. 4 extends so far back against the running direction 91 to the adjacent recess 16 that a pivotable insertion of the extractor 2 is made possible by pivoting in the bearing extension 23 around the extractor axis 21 with the spring element 3 removed, but with an extractor 2 in the rest position, as in Fig.
  • the sequence of movements can be Fig. 6a to 6c , especially in conjunction with the Figs. 2 , 7 and 9 , a particularly preferred embodiment can be seen, according to which the bearing extension 23 can have an insertion bevel 233 between its underside in the direction of the extractor claw 22, preferably up to the contact surface 232.
  • Such a bevel allows the insertion or pivoting of the bearing extension 23 around the extractor axis 21 to be made easier.
  • the longitudinal extent of the support area 18 can be enlarged towards the rear, whereby the clearance between the bearing extension 23 and the support area 18 can be optimized.
  • the tensile load is initiated on the extractor claw 22 after a very short distance - as soon as the contact surface 232 comes into contact with the stop surface 183.
  • the brief jolt that occurs is also advantageous for the extraction process of the cartridge case 4 from the cartridge chamber.
  • the support area 18 may have a trough-shaped pocket 181.
  • This pocket 181 could be referred to as a "dirty pocket" because smaller dirt particles, unwanted oil accumulations and the like can escape there.
  • the risk of insufficient pivoting movement of the extractor 2 due to, for example, accumulations of dirt between the extractor 2 and the body 11 can be reduced, which improves functionality.
  • FIG. 3a shows a closure head 1 whose extractor axis 21 coming from the manufacturing process is designed as a kind of web 26 integrally with the body 11.
  • This web 26 thus forms the extractor axis 21 in the integral version and is preferably rounded in the contact area for the bearing extension 23 or its bearing opening 231.
  • Fig. 4a The web 26 can be seen sloping backwards Formed towards recess 16, which enables the extractor to be inserted pivotally.
  • Such an integral design of the extractor axis 21 increases the rigidity of the closure head 1 under load and also reduces the number of components and the assembly effort.
  • the groove-shaped recess 12 with the laterally open insertion area 122 can be clearly seen.
  • the recess 12 can be aligned tangentially to the circumferential direction 92 as a kind of flattening and merges into the undercut 121 in the rear area.
  • the undercut 121 has a height which approximately corresponds to the thickness of the leaf spring 3.
  • this undercut 121 can be pocket-shaped and closed laterally at least on one side, as shown Fig. 3 very clearly visible. This prevents the leaf spring 3 from accidentally "swinging over" during installation, which promotes functional reliability.
  • Another possible embodiment aims to be able to specifically adjust the pretension of the leaf spring 3.
  • a line-shaped elevation 124 as an example, the possibility of specifically forming a support for the leaf spring 3 using one or more point-shaped, or also line-shaped, elevations 124 should be mentioned.
  • This elevation 124 can be seen well in the sectional view Figs. 4a and 4b can be recognized, which is directed to the section plane BB ' of Fig. 5b.
  • the person skilled in the art is responsible for specifically adjusting the preload on the leaf spring 3 by selecting the height, position and shape of the elevation 124.
  • At least one step 125 can be formed laterally outwards on the recess 12 and/or a provided elevation 124.
  • This step 125 can be perceived as a clearly noticeable detent when the leaf spring 3 is pivoted in, which indicates to the user the correct position of the leaf spring 3 when it "latches” or "snaps" into the correct position.
  • a stage can 125 serve as resistance against unintentionally leaving the correct position of the leaf spring 3 in the installation situation, whereby an additional measure can be designed to increase functionality in the highly dynamic movement processes in the operating state.
  • Fig. 3a As an example, another possibility is shown for limiting or specifically adjusting the movement of the extractor 2, in which the support area 18 is designed obliquely relative to the barrel axis 9.
  • the support area 18 can be inclined in the running direction 91 by an angle of inclination 182 towards the running axis 9.
  • the angle of inclination 182 is preferably from 1° to 5°, relative to the barrel axis 9. In this way, a slight tilting of the extractor 2 towards the barrel axis 9 can be made possible, which, among other things, can improve the gripping of the cartridge case 4.
  • FIG. 4a and 4b are cross-sectional representations of the closure heads 3a and 3b shown, which correspond to the sectional plane of the representation in FIG. 5b.
  • the central firing pin channel can be clearly seen in the cross section, which allows the passage of a firing pin on the butt base 15 by means of the firing pin opening 60.
  • FIGs. 5a and 5b each show a closure head 1 with or without an extractor 2.
  • FIG. 5a an empty cartridge case 4 is also shown in the front view, which is gripped by the extractor 2 at its edge of the case.
  • Fig. 6 shows schematically a sequence of movements on the section plane AA ' as indicated in Fig. 5a.
  • the extractor 2 is in the rest position, with the leaf spring 3 clearly engaging the spring bearing 24 on the underside and pressing the extractor claw 22 inwards.
  • the support area 18 extends so far back that the bearing extension 23 can still be pivoted in.
  • the bearing extension 23 can also be designed with two feet, which is why in the cross-sectional view of Fig. 6 part of the bearing extension 23 can be seen in section and part of the foot can be seen in the side view. It's easy to see However, the at least partial wrap around the extractor axis 21, which in this case is shown as a bearing pin 25.
  • Fig. 6b the state is shown, which shows the extractor 2 in a deflection position, which occurs when the cartridge case 4 is gripped during the closing process. See also detail IV-B, in which the deflection of the leaf spring 3 can be clearly seen.
  • Fig. 6c The gripped cartridge case 4 can be seen in the extractor 2, which can be referred to as the holding position. From detail IV-C it can be seen that the first lever arm is slightly spaced from the support area 18 in this position, as a result of which a high holding force acts on the cartridge case 4.
  • the contacting of the contact surface 232 of the bearing extension 23 with the stop surface 183 of the body 11 or the support area 18 can be recognized.
  • the two surfaces are essentially normal to the barrel axis 9.
  • the required clearances between the bearing extension 23 and the stop surface 183 must be provided by a person skilled in the art in such a way that pivotable installation is possible.
  • FIGS. 5b, 6a-c and 3a-b Another particularly preferred embodiment can be seen from the synopsis of FIGS. 5b, 6a-c and 3a-b can be seen, after which the impact base 15 ( Fig. 3b ) is essentially designed as an elongated hole.
  • the butt base can have a first and second center point for the elongated hole.
  • the first center point is formed by the firing pin opening 60 and the second center point 61 is arranged offset in the direction of the extractor 2, starting from an ejection opening 51 arranged in the edge region of the impact base 15.
  • a modification of the closure head 1 can also provide that a centering bevel 52, starting from the ejection opening 51, is formed on the inner wall of the locking section 13 in the circumferential direction.
  • These centering bevels are in 3a and 3b clearly visible and can also be used in Fig. 6 be seen.
  • the centering bevels 52 ensure that the gripped cartridge case 4 comes into contact with the inner wall of the locking section 13 by the force of the extractor 2 along the centering bevels 52 in a predefined position on the abutment base 15, specifically in front of the ejection opening 51.
  • This measure allows the cartridge case 4 to always be hit at the same angle by the ejector 5 relative to the extractor 2. In this way, the precision when ejecting the cartridge case 4 can be improved to the extent that the cartridge cases 4 are reproducibly ejected from the ejection opening of the firearm at the same angle.
  • Fig. 8a is an example of a leaf spring 3 in an oblique view or top view ( Fig. 8b ) shown, which is particularly suitable for the closure head 1 and extractor 2 according to the invention.
  • the leaf spring 3 has a longitudinal extension in the running direction 91 and a significantly smaller strength in the normal direction 93.
  • the lateral extent and shape can vary over the length of the leaf spring 3, as shown. Bevels on the edges and/or edge areas can also serve to make assembly easier.
  • the leaf spring 3 can have a reduced cross-section relative to its average width on its running-side end section 32, viewed in the installed situation, and this can be rounded off in a substantially circular shape at its running-side end.
  • a leaf spring 3 shaped in this way and narrower at its front end section 32 compared to the average width of the leaf spring 3 has the advantage that the leaf spring 3 is easier to insert into the insertion opening 122.
  • a narrowed end section 32 is particularly advantageous in order to be able to connect to an aforementioned, optionally provided spring receptacle 241, such as in Fig. 7c clearly visible to work together, resulting in the same advantages as mentioned above.
  • the body 11 can have a recess 12 on which a dismantling window 123 is provided laterally, on the side opposite the insertion area 122.
  • This dismantling window 123 is of such a size that an attached leaf spring 3 can be pressed laterally out of the recess 12 using a finger or a simple makeshift tool (possibly with a cartridge tip), which makes dismantling the leaf spring 3 much easier if necessary.
  • the leaf spring 3 has a lateral extension which is designed analogously to the dismantling window 123, preferably in a shape complementary to it.
  • This locking extension 31 is in Fig. 2 and Figs. 8a and 8b very clearly visible and has a longitudinal extension that is designed to be complementary in shape to the system in the area of the dismantling window 123.
  • This measure can limit or even prevent an unintentional longitudinal displacement of the leaf spring 3 forward in the running direction 91 in the operating state. As a result, a pressure load on the leaf spring 3 can be reduced in the direction of its longitudinal extent and the service life of the leaf spring 3 can be extended.
  • FIGs. 9 and 10 A closure head 1 can be seen schematically in a further, preferred embodiment without a leaf spring 3.
  • an extractor 2 can be seen, the contact surface 232 of which is formed at an oblique angle to the direction of travel 9.
  • the stop surface 183 is designed to complement this oblique contact surface 232 Fig. 9b .
  • the contact surface 232 and the stop surface 183 are therefore each designed to be slanted relative to the normal direction 93 in order to cause the extractor 2 to be displaced inwards in the direction of the barrel axis 9 when the extractor 2 is subjected to a forward tensile load.
  • This connection is very good from the holding position Fig. 10 can be seen, which is a sectional view on the section plane AA ' analogous to Fig. 5a, applied to the extractor 2 and the body 11 9a and 9b , corresponds.
  • Fig. 10a the holding position of the closure head 1 is analogous to Fig. 6c - visible.
  • the bevel of the contact surface 232 and the stop surface 183 can result in the extractor being displaced into one Self-locking holding position of the cartridge case 4 can be made possible under tensile load on the extractor 2, as in Fig. 10b is illustrated by the dashed movement arrow (without reference symbols) - essentially parallel to the bevels mentioned.
  • the risk of undesirable release of the cartridge case 4 due to vibration, for example can be further reduced, especially at very high cadences, whereby the reliability of the breech head 1 can be further increased.
  • the invention is not limited to the exemplary embodiments shown and described, but can be modified and designed in various ways.
  • the cross-sectional shapes shown of the housing and closure parts mentioned, bolts, rails, recesses, etc. can be adapted to the specified basic data, and the lengths and positions with respect to the housing can also be easily adapted for the person skilled in the art given knowledge of the invention.
  • equivalent designs are obvious given knowledge of the invention and can be easily carried out by a person skilled in the art.
  • substantially means a deviation of up to 10% of the specified value, if physically possible, both downwards and upwards, otherwise only in the sensible direction, for degrees (angle and temperature) , and terms such as “parallel” or “normal” mean ⁇ 10°. When it comes to terms like “essentially constant” etc., what is meant is the technical deviation possibility that the expert uses as a basis and not the mathematical one.
  • a “substantially L-shaped cross section” comprises two elongated surfaces, each of which merges into the end of the other surface at one end, and whose longitudinal extent is arranged at an angle of 45° to 120° to one another.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Claims (15)

  1. Tête de culasse (1) dotée d'un extracteur (2) pour des douilles de cartouches, comprenant
    un corps cylindrique (11) sur lequel sont réalisés, côté canon, une partie de verrouillage (13) avec un fond de percussion (15), au moins deux bossages de verrouillage (14) faisant saillie radialement vers l'extérieur, et, partant du fond de percussion (15) et s'étendant vers l'arrière, un évidement (12) en forme de rainure doté d'une contre-dépouille (121) et destiné à accueillir l'extracteur (2) et une lame de ressort (3), et
    un extracteur (2) qui, vu à l'état monté, présente, côté canon, un premier bras de levier, comportant une griffe d'extracteur (22) en forme de crochet s'étendant vers l'arrière, ainsi que, dans une partie médiane, une saillie de support (23) avançant vers l'intérieur, et présente un deuxième bras de levier, comportant un support de ressort (24) avançant vers l'arrière et conçu pour être monté sur le corps (11), avec possibilité de pivotement autour d'un axe d'extracteur (21), et pour coopérer avec la lame de ressort (3) en vue de la précontrainte de l'extracteur (2),
    caractérisée en ce que
    - en vue de l'appui sur l'axe d'extracteur (21) à l'état monté, la saillie de support (23) est réalisée en forme de crochet, avec une ouverture de support (231) s'ouvrant vers l'arrière, et présente une surface de contact (232) côté canon, et
    - sur le corps (11), l'évidement (12) en forme de rainure, destiné à accueillir la lame de ressort (3), est ouvert sur un côté, tangentiellement à la direction circonférentielle, latéralement au moins en partie sur une zone d'insertion (122), et est réalisé de manière à se raccorder à la contre-dépouille (121), latéralement et/ou vers l'arrière, et
    - le corps (11) présente un creux (16) destiné à accueillir la saillie de support (23), dans la région de l'axe d'extracteur (21), par rapport à un plan imaginaire de l'évidement (12).
  2. Tête de culasse (1) selon la revendication 1, caractérisée en ce que le creux (16) est délimité côté canon, vers l'avant, par une zone d'appui (18) s'étendant vers l'arrière depuis le fond de percussion (15), jusqu'à une surface de butée (183), de manière à ce qu'une insertion de l'extracteur (2) soit rendue possible par pivotement vers l'intérieur de la saillie de support (23) autour de l'axe d'extracteur (21), lorsque l'élément ressort (3) est démonté.
  3. Tête de culasse (1) selon la revendication 1 ou 2, caractérisée en ce que la saillie de support (23) présente une rampe d'insertion (233), depuis sa face inférieure en direction de la griffe d'extracteur (22).
  4. Tête de culasse (1) selon l'une des revendications précédentes, caractérisée en ce que la lame de ressort (3), sur sa partie d'extrémité (32) côté canon, vue dans la situation de montage, présente une section réduite par rapport à sa largeur moyenne et que celle-ci est arrondie sous une forme sensiblement circulaire à son extrémité côté canon.
  5. Tête de culasse (1) selon l'une des revendications précédentes, caractérisée en ce que la contre-dépouille (121) est réalisée en forme de poche et est fermée sur les côtés, en vue d'accueillir au moins en partie une portion arrière de l'élément ressort (3).
  6. Tête de culasse (1) selon l'une des revendications précédentes 2 à 5, caractérisée en ce que la zone d'appui (18) présente une poche (181) en forme de cavité.
  7. Tête de culasse (1) selon l'une des revendications précédentes 2 à 6, caractérisée en ce que la zone d'appui (18) est inclinée, côté canon, en direction de l'axe de canon (9), de préférence avec un angle d'inclinaison (182) de 1° à 5°.
  8. Tête de culasse (1) selon l'une des revendications précédentes, caractérisée en ce que l'évidement (12) comporte latéralement, sur le côté opposé à la zone d'insertion (122), une fenêtre de démontage (123).
  9. Tête de culasse (1) selon la revendication 8, caractérisée en ce que l'élément ressort (3) présente une saillie de blocage (31) latérale qui a une dimension longitudinale réalisée avec une forme complémentaire en vue de l'appui dans la région de la fenêtre de démontage (123).
  10. Tête de culasse (1) selon l'une des revendications précédentes, caractérisée en ce que sur le corps (11), au moins une protubérance (124) ponctuelle et/ou linéaire est réalisée sur l'évidement (12), et/ou en ce que dans la zone de bord, au moins un gradin (125) est réalisé latéralement vers l'extérieur sur l'évidement (12) ou sur la protubérance (124), au nombre d'au moins une.
  11. Tête de culasse (1) selon l'une des revendications précédentes, caractérisée en ce que sur la face inférieure du support de ressort (24), il est prévu un logement de ressort (241).
  12. Tête de culasse (1) selon l'une des revendications précédentes, caractérisée en ce que le fond de percussion (15) est réalisé sensiblement sous forme de trou oblong dont le premier centre est une ouverture de percuteur (60) et dont le deuxième centre (61) est décalé en direction de l'extracteur (2), en partant d'une ouverture d'éjecteur (51) disposée dans la zone de bord du fond de percussion (15).
  13. Tête de culasse (1) selon la revendication 12, caractérisée en ce que sur la paroi intérieure de la partie de verrouillage (13), il est prévu, respectivement dans la direction circonférentielle, une rampe de centrage (52), en partant de l'ouverture d'éjecteur (51).
  14. Tête de culasse (1) selon l'une des revendications précédentes, caractérisée en ce que l'axe d'extracteur (21) est constitué d'une broche (25) ou en ce que l'axe d'extracteur (21) est réalisé d'une seule pièce sur le corps (11), sous forme de traverse (26).
  15. Tête de culasse (1) selon l'une des revendications 2 à 14, caractérisée en ce que la surface de contact (232) et la surface de butée (183) sont réalisées respectivement de façon complémentaire entre elles, de préférence en étant biseautées par rapport à la direction normale (93), de manière à engendrer, en cas de contrainte de traction de l'extracteur (2) vers l'avant, un déplacement de l'extracteur (2) en direction de l'axe de canon (9), vers l'intérieur.
EP21189286.4A 2021-08-03 2021-08-03 Tête de culasse pour une arme à feu Active EP4130640B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP21189286.4A EP4130640B1 (fr) 2021-08-03 2021-08-03 Tête de culasse pour une arme à feu
BR112023023907A BR112023023907A2 (pt) 2021-08-03 2022-07-20 Cabeça de ferrolho para uma arma de fogo
IL308919A IL308919A (en) 2021-08-03 2022-07-20 Bolt for a firearm
CA3222232A CA3222232A1 (fr) 2021-08-03 2022-07-20 Tete de culasse pour arme a feu
PCT/EP2022/070325 WO2023011921A1 (fr) 2021-08-03 2022-07-20 Tête de culasse pour arme à feu
US18/431,685 US12235058B2 (en) 2021-08-03 2022-07-20 Bolt for a firearm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21189286.4A EP4130640B1 (fr) 2021-08-03 2021-08-03 Tête de culasse pour une arme à feu

Publications (3)

Publication Number Publication Date
EP4130640A1 EP4130640A1 (fr) 2023-02-08
EP4130640C0 EP4130640C0 (fr) 2024-03-06
EP4130640B1 true EP4130640B1 (fr) 2024-03-06

Family

ID=77206935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21189286.4A Active EP4130640B1 (fr) 2021-08-03 2021-08-03 Tête de culasse pour une arme à feu

Country Status (6)

Country Link
US (1) US12235058B2 (fr)
EP (1) EP4130640B1 (fr)
BR (1) BR112023023907A2 (fr)
CA (1) CA3222232A1 (fr)
IL (1) IL308919A (fr)
WO (1) WO2023011921A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12287165B2 (en) 2022-07-26 2025-04-29 Sig Sauer, Inc. Extractor for an autoloading firearm
WO2025165355A1 (fr) * 2024-01-31 2025-08-07 Sig Sauer, Inc. Extracteur pour arme à feu à chargement automatique

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US431670A (en) * 1890-07-08 Paul mauser
US136850A (en) * 1873-03-18 Improvement in breech-loading fire-arms
US808463A (en) * 1904-06-28 1905-12-26 Georg Luger Firearm.
GB191208157A (en) * 1912-04-04 1913-07-04 Arthur Trevor Dawson Improvements in or relating to Small Arms.
NL6378C (fr) * 1917-07-17
US1352515A (en) * 1918-03-26 1920-09-14 Armes Automatiques Lewis Cartridge-extractor for firearms
GB160773A (en) 1920-03-20 1921-08-04 Staatliche Industriewerke An improved cartridge extractor for firearms
US1507900A (en) * 1921-08-23 1924-09-09 Rudolf V Frommer Cartridge extractor for firearms
NL14380C (fr) 1922-01-09
US1544566A (en) * 1924-02-02 1925-07-07 Auto Ordnance Corp Cartridge extracting and ejecting mechanism for firearms
FR578615A (fr) * 1924-03-13 1924-10-01 Carabine
GB222784A (en) * 1924-04-28 1924-10-09 Auto Ordnance Corp Improvements in or relating to cartridge extracting and ejecting mechanism for firearms
DE437957C (de) * 1924-11-15 1926-12-01 Johannes Heim Auszieher an Selbstladepistolen
DE659924C (de) 1933-03-25 1938-05-13 I G Farbenindustrie Akt Ges Verfahren zur Aufarbeitung der Feststoffe enthaltenden Rueckstaende der Druckhydrierung
DE695924C (de) * 1938-07-15 1940-09-06 Rheinmetall Borsig Akt Ges Patronenauszieher fuer Feuerwaffen
DE739617C (de) * 1939-07-21 1943-09-30 Heinrich Freiherr Von Wimmersp Patronenhuelsenauszieheinrichtung fuer Feuerwaffen
CH214423A (de) 1939-08-15 1941-04-30 Zbrojovka Brno As Einrichtung an Schusswaffen zum Sichern des Zündbolzens gegen Drehen.
US2591733A (en) * 1948-11-08 1952-04-08 Us Sec War Extractor for firearms
CH281472A (de) 1950-04-14 1952-03-15 Oerlikon Buehrle Ag Hülsenausstossvorrichtung an automatischen Feuerwaffen.
US2712192A (en) * 1951-10-02 1955-07-05 Paul H Dixon Extraction, ejection and ramming mechanism
GB972692A (en) 1960-01-20 1964-10-14 Birmingham Small Arms Co Ltd Improvements in or relating to bolt-action firearms
US3608223A (en) * 1968-11-08 1971-09-28 Bridgeport Firearms Co Firing pin and extractor mechanism for firearms
DE2530705A1 (de) * 1975-07-10 1977-01-20 Rheinmetall Gmbh Auszieher fuer feuerwaffen
US6182389B1 (en) 1998-11-06 2001-02-06 Karl R. Lewis Bolt assembly for a firearm
IL160803A (en) 2004-03-10 2010-06-16 Israel Weapon Ind I W I Ltd Safety mechanism for a rifle
US10215518B1 (en) 2017-10-02 2019-02-26 Kramer Cartridge & Carbine LLC Cartridge extractor for firearms
CN113739626B (zh) * 2021-09-17 2023-05-19 重庆建设工业(集团)有限责任公司 一种抽壳机构

Also Published As

Publication number Publication date
WO2023011921A1 (fr) 2023-02-09
US12235058B2 (en) 2025-02-25
BR112023023907A2 (pt) 2024-02-27
EP4130640C0 (fr) 2024-03-06
CA3222232A1 (fr) 2023-02-09
EP4130640A1 (fr) 2023-02-08
US20240337455A1 (en) 2024-10-10
IL308919A (en) 2024-01-01

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