EP4086564B1 - Ignition device for a rimfire cartridge - Google Patents

Ignition device for a rimfire cartridge Download PDF

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Publication number
EP4086564B1
EP4086564B1 EP22171137.7A EP22171137A EP4086564B1 EP 4086564 B1 EP4086564 B1 EP 4086564B1 EP 22171137 A EP22171137 A EP 22171137A EP 4086564 B1 EP4086564 B1 EP 4086564B1
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EP
European Patent Office
Prior art keywords
ignition device
firing
ignition
longitudinal axis
pins
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EP22171137.7A
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German (de)
French (fr)
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EP4086564A1 (en
EP4086564C0 (en
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Rolf Denzler
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    • 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
    • F41A19/13—Percussion or firing pins, i.e. fixed or slidably-mounted striker elements; Mountings therefor

Definitions

  • the invention relates to an ignition device for a rimfire cartridge according to the preamble of patent claim 1.
  • a primer cap is arranged centrally in the base of the case. Unlike these centerfire cartridges, the primer on rimfire cartridges is cast into the bottom of the case and thus into the inner circumferential groove of the hollow edge of the case that protrudes on the outside.
  • the firing pin hits the edge of the case base from behind, it is crushed, which triggers the ignition of the primer in the groove and, as a result, the ignition of the propellant powder in contact with it.
  • the disadvantage is that the ignition due to crushing of the edge requires a small maximum wall thickness, at least in the area of the sleeve. For these reasons, a soft material such as copper or brass with a high copper content is used to produce the sleeve by deep drawing. The combustion pressure and thus also the maximum projectile energy are thereby limited.
  • Another disadvantage is that once cartridge cases have been fired, they can no longer be used because the edge of the case has been irreversibly damaged by the firing pin impression.
  • US Patent No. 2,793,455 from 1954 describes a rifle with a sliding bolt, which is guided in the bore of a rifle barrel.
  • a breech cap is screwed onto the front end of the sliding bolt and is pushed against the back of a rimfire cartridge.
  • the closure cap is provided with three guide holes in which three pins of a cylindrical firing pin are guided. When the trigger is pulled, the pins hit the edge of the rimfire cartridge and a shot is fired.
  • the ignition device described above Since the guidance of the pins in the guide holes must be very precise and an exact impact on the base of the cartridge case cannot be guaranteed, the ignition device described above has not proven itself in practice. In order to avoid misfiring, the Henry rifles, the Winchester rifles of the Model 1866, and the Swiss Vetterli rifles, for example, were equipped with a double ignition, which struck opposite sides of the cartridge rim. This double ignition has also not proven successful and is no longer used today.
  • the US Patent No. 7,143,537 of 2006 describes a firing pin assembly that includes a single firing pin and a firing pin shaft.
  • the firing pin is received in a slot of the end of the firing pin shaft to be retained therein with a spring retaining sleeve, a main spring and a main spring sleeve.
  • the firing pin is removable from the firing pin assembly and can be replaced to provide long-term use of the firing pin assembly.
  • the spring retaining sleeve is oriented to hold the components securely in place, the firing pin assembly acts as a unit.
  • the present invention is based on the object of specifying an ignition device for a rimfire cartridge, which triggers reliable ignition and ensures an axially stable alignment of the cartridge on the target axis.
  • the ignition device is intended for a firearm with a rimfire cartridge and has a firing pin and a biasing spring, the firing pin being guided in a guide cylinder in the breech housing of the firearm.
  • the firing pin is provided with a firing head which has at least two firing pins arranged symmetrically to the longitudinal axis of the firing head.
  • the guide cylinder has, at its front end in the direction of travel, a butt plate with holes which is used to guide the firing pins.
  • the free end of the ignition pins is designed with an edge that is beveled towards the longitudinal axis
  • the beveled edge according to claim 2 forms an angle of 10° to 30° with respect to the perpendicular to the longitudinal axis of the firing pin.
  • a ground-back can be provided on each side perpendicular to the beveled edge in an angular range of 5° to 35° compared to the perpendicular to the longitudinal axis of the firing pin.
  • the beveled edge is provided with a flat ground back on the side facing away from the longitudinal axis.
  • the concave back grind advantageously forms an angle of 1° to 6° to the horizontal rising outwards.
  • this firing head can be arranged to swing freely on the firing pin.
  • an elastic intermediate piece can be provided between the firing head and the firing pin.
  • the butt base of the guide cylinder has a circular recess which serves to accommodate and position the base of the rimfire-ignitable cartridge.
  • an ignition device 1 with a firing pin 2 a movable ignition head 3 with a longitudinal axis 4 and three ignition pins 5 arranged symmetrically to the longitudinal axis on the ignition head 3 are shown in perspective.
  • the firing head 3 is movable, in particular freely swinging, attached to the firing pin 2 in order to adjust and compensate for any dimensional tolerances in the cartridge base before the strike with the firing pin 2 occurs.
  • an elastic intermediate piece is provided between the firing head 3 and the firing pin 2 (not shown).
  • a guide cylinder 6 is shown with a butt plate 7, which has three bores 8 which serve to guide the ignition pins 4. Furthermore, the butt base 7 has a circular recess 9, which serves to hold a base of a rimfire cartridge.
  • FIG. 5 and 6 the bottom 10 of a cartridge case 11 is shown with a deep-drawn groove 12 - in Figure 5 partly in cold cuts.
  • An ignition mass 13 is provided in a ring shape in the groove 12 and surrounds a propellant charge 14. With a schematically shown firing pin 15, the edge 16 is suddenly crushed, whereby the ignition mass 13 is ignited by friction and then the propellant charge 14 is ignited.
  • Figure 7 shows the ignition pins 5 in a side view, with their front free ends 20 each being provided with a beveled edge 21.
  • the beveled edge 21 is in Figure 8 can be seen in more detail and forms an angle or concave relief of 10° to 30° compared to the perpendicular to the longitudinal axis 4 of the firing pin 5.
  • Perpendicular to the beveled edge 21 there is a ground back 22 on each side in the angular range of 5° to 45° to the longitudinal axis 4 of the firing pin 5 intended.
  • the beveled edge 21 is provided on the side facing away from the longitudinal axis 4 with a flat back grinding 23, which in particular forms an angle of 1° to 6° to the horizontal rising outwards.
  • the free end 20 of the firing pin 5 can also have a different design. It is essential that at least one beveled edge 21 is provided, which points towards the ignition head 3 at an angle downwards to the longitudinal axis 4.
  • the back cuts 22 and 23 can be omitted.
  • Multiple ignition of a rimfire cartridge can also be achieved with two ignition pins 5, which are arranged symmetrically with respect to the longitudinal axis 4.
  • four or five ignition pins 5 can also be provided, with the space available on the ignition head 3 and the diameter of the ignition pins 5 limiting the maximum number of ignition pins 5.
  • Three ignition pins 5 are optimal, as in the Figures 7 and 8 pictured.
  • the multiple ignition with the ignition device according to the invention results in a lower environmental impact, since the ignition mass and the gunpowder 13 burn completely. With three ignition pins 5, there are no longer any malfunctions caused by cold shocks, as these are eliminated by the multiple ignition.
  • the free end 20 of the ignition pin 5 can also be used, which form a beveled edge.
  • the free end 20 can be square, rectangular, crescent-shaped or circular.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

Die Erfindung betrifft eine Zündvorrichtung für eine Randfeuerpatrone nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an ignition device for a rimfire cartridge according to the preamble of patent claim 1.

STAND DER TECHNIKSTATE OF THE ART

Bei den heute meist üblichen Feuerpatronen ist zentral im Hülsenboden ein Zündhütchen angeordnet. Anders als bei diesen Zentralfeuerpatronen ist der Zündsatz bei Randfeuerpatronen in den Boden der Hülse und damit in die innen umlaufende Rille des aussen überstehenden hohlen Randes der Hülse eingegossen. Durch Aufschlagen des Schlagbolzens von hinten auf den Rand des Hülsenbodens wird dieser gequetscht, was die Zündung des in der Rille befindlichen Zündsatzes und in der Folge die Zündung des damit in Kontakt stehenden Treibladungspulvers auslöst. Nachteilig ist, dass die Zündung durch Quetschung des Randes eine geringe maximale Wandstärke bedingt, zumindest im Bereich der Hülse. Aus diesen Gründen wird für die Herstellung der Hülse durch Tiefziehen ein weiches Material, wie Kupfer oder Messing mit hohem Kupfergehalt, verwendet. Der Verbrennungsdruck und somit auch die maximale Geschossenergie sind hierdurch begrenzt. Ein weiterer Nachteil ist, dass einmal abgeschossenen Patronenhülsen nicht mehr weiterverwendet werden können, weil der Hülsenrand durch den Schlagbolzenabdruck irreversibel beschädigt worden ist.In today's most common fire cartridges, a primer cap is arranged centrally in the base of the case. Unlike these centerfire cartridges, the primer on rimfire cartridges is cast into the bottom of the case and thus into the inner circumferential groove of the hollow edge of the case that protrudes on the outside. When the firing pin hits the edge of the case base from behind, it is crushed, which triggers the ignition of the primer in the groove and, as a result, the ignition of the propellant powder in contact with it. The disadvantage is that the ignition due to crushing of the edge requires a small maximum wall thickness, at least in the area of the sleeve. For these reasons, a soft material such as copper or brass with a high copper content is used to produce the sleeve by deep drawing. The combustion pressure and thus also the maximum projectile energy are thereby limited. Another disadvantage is that once cartridge cases have been fired, they can no longer be used because the edge of the case has been irreversibly damaged by the firing pin impression.

US Patent Nr. 2,793,455 von 1954 beschreibt ein Gewehr mit einem Schiebebolzen, welcher in der Bohrung eines Gewehrlaufs geführt ist. Eine Verschlusskappe ist auf dem vorderen Ende des Schiebbolzens aufgeschraubt und wird gegen die Rückseite einer Randfeuerpatrone geschoben. Die Verschlusskappe ist mit drei Führungsbohrungen versehen, in welcher drei Stifte eines zylindrischen Schlagbolzens geführt sind. Beim Auslösen des Abzugs werden die Stifte auf den Rand der Randfeuerpatrone aufschlagen und somit erfolgt ein Schuss. US Patent No. 2,793,455 from 1954 describes a rifle with a sliding bolt, which is guided in the bore of a rifle barrel. A breech cap is screwed onto the front end of the sliding bolt and is pushed against the back of a rimfire cartridge. The closure cap is provided with three guide holes in which three pins of a cylindrical firing pin are guided. When the trigger is pulled, the pins hit the edge of the rimfire cartridge and a shot is fired.

Da die Führung der Stifte in den Führungsbohrungen sehr genau sein muss und ein genaues Auftreffen auf den Hülsenboden der Feuerpatrone nicht garantiert werden kann, hat sich die oben beschriebene Zündvorrichtung in der Praxis nicht bewährt. Um Fehlzündungen zu vermeiden, wurden beispielsweise die Henry-Gewehre, die Winchestergewehre des Models 1866, sowie die schweizerischen Vetterli-Gewehre mit einer Doppelzündung ausgerüstet, welche auf gegenüberliegende Seiten des Patronenrandes aufschlugen. Diese Doppelzündung hat sich ebenfalls nicht bewährt und findet heute keine Anwendung mehr.Since the guidance of the pins in the guide holes must be very precise and an exact impact on the base of the cartridge case cannot be guaranteed, the ignition device described above has not proven itself in practice. In order to avoid misfiring, the Henry rifles, the Winchester rifles of the Model 1866, and the Swiss Vetterli rifles, for example, were equipped with a double ignition, which struck opposite sides of the cartridge rim. This double ignition has also not proven successful and is no longer used today.

Das US-Patent Nr. 7,143,537 von 2006 beschreibt eine Schlagbolzenanordnung, die einen einzigen Schlagbolzen und eine Schlagbolzenwelle umfasst. Der Schlagbolzen wird in einem Schlitz des Endes der Schlagbolzenwelle aufgenommen, um darin mit einer Federhaltehülse, einer Hauptfeder und einer Hauptfederhülse gehalten zu werden. Der Schlagbolzen ist von der Schlagbolzenbaugruppe abnehmbar und kann ersetzt werden, um eine langfristige Verwendung der Schlagbolzenbaugruppe zu bewirken. Wenn die Federhaltehülse so ausgerichtet ist, dass die Komponenten sicher an Ort und Stelle gehalten werden, wirkt die Schlagbolzenbaugruppe als Einheit.The US Patent No. 7,143,537 of 2006 describes a firing pin assembly that includes a single firing pin and a firing pin shaft. The firing pin is received in a slot of the end of the firing pin shaft to be retained therein with a spring retaining sleeve, a main spring and a main spring sleeve. The firing pin is removable from the firing pin assembly and can be replaced to provide long-term use of the firing pin assembly. When the spring retaining sleeve is oriented to hold the components securely in place, the firing pin assembly acts as a unit.

Auch diese Ausführung kann Fehlzündungen nicht ausschliessen, weshalb Schützen nach Möglichkeit Zentralfeuerpatronen und mit entsprechenden Schlagbolzen ausgerüsteten Feuerwaffen verwenden anstelle von Randfeuerpatronen. Ferner wird durch den einseitigen Aufschlag des Schlagbolzens auf den Rand der Feuerpatrone eine leichte Verkantung der Patrone bewirkt, so dass kein zielgenauer Schuss erreicht werden kann. Deshalb verzichten die meisten Sportschützen auf Randfeuerpatronen, sofern reglementarisch möglich.This design cannot rule out misfires either, which is why shooters use centerfire cartridges and firearms equipped with appropriate firing pins instead of rimfire cartridges if possible. Furthermore, the one-sided impact of the firing pin on the edge of the fire cartridge causes the cartridge to tilt slightly, so that an accurate shot cannot be achieved. That's why most sport shooters avoid using rimfire cartridges if the regulations allow.

AUFGABE DER ERFINDUNGOBJECT OF THE INVENTION

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, eine Zündvorrichtung für eine Randfeuerpatrone anzugeben, welche eine sichere Zündung auslöst und eine achsstabile Ausrichtung der Patrone auf der Zielachse gewährleistet.The present invention is based on the object of specifying an ignition device for a rimfire cartridge, which triggers reliable ignition and ensures an axially stable alignment of the cartridge on the target axis.

GEGENSTAND DER ERFINDUNGSUBJECT OF THE INVENTION

Diese Aufgabe wird durch eine Zündvorrichtung mit den Merkmalen des Patentanspruchs 1 gelöst.This task is solved by an ignition device with the features of patent claim 1.

Die erfindungsgemässe Zündvorrichtung ist für eine Feuerwaffe mit einer randfeuerzündbaren Patrone vorgesehen und weist einen Schlagbolzen und einen Vorspannfeder auf, wobei der Schlagbolzen in einem Führungszylinder im Verschlussgehäuse der Feuerwaffe geführt ist. Der Schlagbolzen ist mit einem Zündkopf versehen, welcher mindestens zwei symmetrisch zur Längsachse des Zündkopfes angeordnete Zündstifte aufweist. Der Führungszylinder weist an seinem in Laufrichtung vorderen Ende einen Stossboden mit Bohrungen auf, die zur Führung der Zündstifte dient. Das freie Ende der Zündstifte ist mit einer zur Längsachse hin abgeschrägten Kante ausgebildetThe ignition device according to the invention is intended for a firearm with a rimfire cartridge and has a firing pin and a biasing spring, the firing pin being guided in a guide cylinder in the breech housing of the firearm. The firing pin is provided with a firing head which has at least two firing pins arranged symmetrically to the longitudinal axis of the firing head. The guide cylinder has, at its front end in the direction of travel, a butt plate with holes which is used to guide the firing pins. The free end of the ignition pins is designed with an edge that is beveled towards the longitudinal axis

Vorteilhafterweise bildet die abgeschrägte Kante gemäss Anspruch 2 einen Winkel von 10° bis 30° gegenüber der Senkrechten zur Längsachse des Zündstiftes.Advantageously, the beveled edge according to claim 2 forms an angle of 10° to 30° with respect to the perpendicular to the longitudinal axis of the firing pin.

Dabei kann mit Vorteil gemäss Anspruch 3 senkrecht zur abgeschrägten Kante je seitlich ein Rückschliff im Winkelbereich von 5° bis 35° gegenüber der Senkrechten zur Längsachse des Zündstiftes vorgesehen sein.Advantageously, according to claim 3, a ground-back can be provided on each side perpendicular to the beveled edge in an angular range of 5° to 35° compared to the perpendicular to the longitudinal axis of the firing pin.

In einer vorteilhaften Ausführung der Zündvorrichtung gemäss Anspruch 4 ist die abgeschrägte Kante auf der von der Längsachse abgewandten Seite mit einem flachen Rückschliff versehen. Gemäss Anspruch 5 bildet der konkave Rückschliff vorteilhafterweise einen Winkel von 1° bis 6° zur Horizontalen nach aussen aufsteigend.In an advantageous embodiment of the ignition device according to claim 4, the beveled edge is provided with a flat ground back on the side facing away from the longitudinal axis. According to claim 5, the concave back grind advantageously forms an angle of 1° to 6° to the horizontal rising outwards.

Es hat sich ferner gemäss Anspruch 6 bewährt, den Schlagbolzen mit einem beweglichen Zündkopf zu versehen, um allfällige Hülsenbodentoleranzen auszugleichen. Gemäss Anspruch 7 kann dieser Zündkopf freischwingend auf dem Schlagbolzen angeordnet sein.According to claim 6, it has also proven useful to provide the firing pin with a movable firing head in order to compensate for any case base tolerances. According to claim 7, this firing head can be arranged to swing freely on the firing pin.

Dazu kann gemäss Anspruch 8 zwischen dem Zündkopf und dem Schlagbolzen ein elastisches Zwischenstück vorgesehen sein.For this purpose, according to claim 8, an elastic intermediate piece can be provided between the firing head and the firing pin.

In einer vorteilhaften Ausführung der Zündvorrichtung gemäss Anspruch 9 weist der Stossboden des Führungszylinders eine kreisrunde Vertiefung auf, welche zur Aufnahme und Positionierung des Bodens der randfeuerzündbaren Patrone dient.In an advantageous embodiment of the ignition device according to claim 9, the butt base of the guide cylinder has a circular recess which serves to accommodate and position the base of the rimfire-ignitable cartridge.

BESCHREIBUNG EINES AUSFÜHRUNGSBEISPIELES DER ERFINDUNGDESCRIPTION OF AN EMBODIMENT OF THE INVENTION

Weitere Vorteile der Erfindung ergeben sich aus den abhängigen Patentansprüchen und aus der nachfolgenden Beschreibung, in welcher die Erfindung anhand eines in den schematischen Zeichnungen dargestellten Ausführungsbeispieles näher erläutert wird. Es zeigt:

Fig. 1
eine Zündvorrichtung mit einem Schlagbolzen, einem beweglichen Zündkopf und drei vorstehenden Zündstiften in perspektivischer Darstellung,
Fig. 2
einen Führungszylinder mit einem Stossboden mit Bohrungen in perspektivischer Darstellung,
Fig. 3
die Zündvorrichtung der Figur 1 in Seitenanschicht,
Fig. 4
der Führungszylinder der Figur 2 in Seitenansicht,
Fig. 5
eine schematische Darstellung zur Verdeutlichung der Randfeuerzündung, vor der Auslösung, und
Fig. 6
dieselbe Darstellung nach dem Stoss und der Zündung,
Fig. 7
eine Seitenansicht der Zündstifte in perspektivischer Darstellung, und
Fig. 8
eine Draufsicht der Zündstifte in perspektivischer Darstellung
Further advantages of the invention result from the dependent patent claims and from the following description, in which the invention is explained in more detail using an exemplary embodiment shown in the schematic drawings. It shows:
Fig. 1
an ignition device with a firing pin, a movable ignition head and three protruding ignition pins in a perspective view,
Fig. 2
a guide cylinder with a butt base with holes in a perspective view,
Fig. 3
the ignition device Figure 1 in side layer,
Fig. 4
the guide cylinder Figure 2 in side view,
Fig. 5
a schematic representation to illustrate the rimfire ignition, before triggering, and
Fig. 6
the same representation after the shock and the ignition,
Fig. 7
a side view of the ignition pins in perspective, and
Fig. 8
a top view of the firing pins in perspective

In den Figuren 1 und 3 ist eine Zündvorrichtung 1 mit einem Schlagbolzen 2, einem beweglichen Zündkopf 3 mit einer Längsachse 4 und drei symmetrisch zur Längsachse auf dem Zündkopf 3 angeordneten Zündstifte 5 perspektivisch dargestellt. Der Zündkopf 3 ist beweglich, insbesondere freischwingend, am Schlagbolzen 2 befestigt, um allfällige Masstoleranzen des Patronenbodens zu justieren und auszugleichen, bevor der Schlag mit dem Schlagbolzen 2 erfolgt. Dazu ist zwischen dem Zündkopf 3 und dem Schlagbolzen 2 ein elastisches Zwischenstück vorgesehen (nicht dargestellt).In the Figures 1 and 3 an ignition device 1 with a firing pin 2, a movable ignition head 3 with a longitudinal axis 4 and three ignition pins 5 arranged symmetrically to the longitudinal axis on the ignition head 3 are shown in perspective. The firing head 3 is movable, in particular freely swinging, attached to the firing pin 2 in order to adjust and compensate for any dimensional tolerances in the cartridge base before the strike with the firing pin 2 occurs. For this purpose, an elastic intermediate piece is provided between the firing head 3 and the firing pin 2 (not shown).

In den Figuren 2 und 4 ist ein Führungszylinder 6 mit einem Stossboden 7 dargestellt, welche drei Bohrungen 8 aufweist, welche zur Führung der Zündstifte 4 dienen. Ferner weist der Stossboden 7 eine kreisrunde Vertiefung 9 auf, welche zur Aufnahme eines Bodens einer randfeuerzündbaren Patrone dient.In the Figures 2 and 4 a guide cylinder 6 is shown with a butt plate 7, which has three bores 8 which serve to guide the ignition pins 4. Furthermore, the butt base 7 has a circular recess 9, which serves to hold a base of a rimfire cartridge.

In den Figuren 5 und 6 ist der Boden 10 einer Patronenhülse 11 mit einer tiefgezogenen Rille 12 dargestellt - in Figur 5 teilweise in Aufschnitt. In der Rille 12 ist ringförmig eine Zündmasse 13 vorgesehen, welche eine Treibladung 14 umgibt. Mit einem schematisch dargestellten Schlagbolzen 15 wird der Rand 16 schlagartig gequetscht, wodurch die Zündmasse 13 sich durch Reibung entzündet und sodann die Treibladung 14 zündet.In the Figures 5 and 6 the bottom 10 of a cartridge case 11 is shown with a deep-drawn groove 12 - in Figure 5 partly in cold cuts. An ignition mass 13 is provided in a ring shape in the groove 12 and surrounds a propellant charge 14. With a schematically shown firing pin 15, the edge 16 is suddenly crushed, whereby the ignition mass 13 is ignited by friction and then the propellant charge 14 is ignited.

Figur 7 zeigt die Zündstifte 5 in Seitenansicht, wobei deren vorderen freien Enden 20 je mit einer abgeschrägten Kante 21 versehen ist. Die abgeschrägte Kante 21 ist in Figur 8 genauer ersichtlich und bildet einen Winkel oder konkave Freistellung von 10° bis 30° gegenüber der Senkrechten zur Längsachse 4 des Zündstiftes 5. Senkrecht zur abgeschrägten Kante 21 ist je seitlich einen Rückschliff 22 im Winkelbereich von 5° bis 45° zur Längsachse 4 des Zündstiftes 5 vorgesehen. Ferner ist die abgeschrägte Kante 21 auf der von der Längsachse 4 abgewandten Seite mit einem flachen Rückschliff 23 versehen, welcher insbesondere einen Winkel von 1° bis 6° zur Horizontalen nach aussen aufsteigend bildet. Figure 7 shows the ignition pins 5 in a side view, with their front free ends 20 each being provided with a beveled edge 21. The beveled edge 21 is in Figure 8 can be seen in more detail and forms an angle or concave relief of 10° to 30° compared to the perpendicular to the longitudinal axis 4 of the firing pin 5. Perpendicular to the beveled edge 21 there is a ground back 22 on each side in the angular range of 5° to 45° to the longitudinal axis 4 of the firing pin 5 intended. Furthermore, the beveled edge 21 is provided on the side facing away from the longitudinal axis 4 with a flat back grinding 23, which in particular forms an angle of 1° to 6° to the horizontal rising outwards.

Es versteht sich für den Fachmann, dass das freie Ende 20 des Zündstifts 5 auch eine andere Ausgestaltung haben kann. Wesentlich dabei ist, dass mindestens eine abgeschrägte Kante 21 vorgesehen ist, welche zum Zündkopf 3 hin mit einem Winkel nach unten zur Längsachse 4 zeigt. Die Rückschliffe 22 und 23 können dabei weggelassen werden.It will be understood by those skilled in the art that the free end 20 of the firing pin 5 can also have a different design. It is essential that at least one beveled edge 21 is provided, which points towards the ignition head 3 at an angle downwards to the longitudinal axis 4. The back cuts 22 and 23 can be omitted.

Die Mehrfachzündung einer Randfeuerpatrone kann auch schon erreicht werden mit zwei Zündstiften 5, welche symmetrisch gegenüber der Längsachse 4 angeordnet sind. Anderseits können auch vier oder fünft Zündstifte 5 vorgesehen sein, wobei die Platzverhältnisse auf dem Zündkopf 3 und die Durchmesser der Zündstifte 5 die maximale Anzahl Zündstifte 5 einschränkt. Optimal sind drei Zündstifte 5, wie in den Figuren 7 und 8 abgebildet.Multiple ignition of a rimfire cartridge can also be achieved with two ignition pins 5, which are arranged symmetrically with respect to the longitudinal axis 4. On the other hand, four or five ignition pins 5 can also be provided, with the space available on the ignition head 3 and the diameter of the ignition pins 5 limiting the maximum number of ignition pins 5. Three ignition pins 5 are optimal, as in the Figures 7 and 8 pictured.

Durch die Mehrfachzündung mit der erfindungsgemässen Zündvorrichtung ergibt sich eine geringere Umweltbelastung, da die Zündmasse und das Schiesspulver 13 vollständig verbrennt. Es gibt mit drei Zündstiften 5 auch keine Funktionsstörung durch Kaltschläge mehr, da diese durch die Mehrfachzündung eliminiert werden.The multiple ignition with the ignition device according to the invention results in a lower environmental impact, since the ignition mass and the gunpowder 13 burn completely. With three ignition pins 5, there are no longer any malfunctions caused by cold shocks, as these are eliminated by the multiple ignition.

Es können auch andere Formen des freien Endes 20 des Zündstiftes 5 eingesetzt werden, welche eine abgeschrägte Kante bilden. Beispielsweise kann das freie Ende 20 quadratisch, rechteckig, halbmondförmig oder kreisrund ausgebildet sein.Other shapes of the free end 20 of the ignition pin 5 can also be used, which form a beveled edge. For example, the free end 20 can be square, rectangular, crescent-shaped or circular.

Claims (9)

  1. An ignition device (1) for a firearm with a rimfire cartridge, comprising a striking pin (2), a bias spring and a guide cylinder (6), wherein the striking pin (2) is guided in the guide cylinder (6) in a receiver of the firearm, wherein the striking pin (2) is provided with a firing head (3) that has at least two firing pins (5) arranged symmetrically to the longitudinal axis (4) of the firing head, and wherein the guide cylinder (6) has a breech face (7) with bores (8), which serve for guiding the firing pins, on its front end referred to the barrel direction, characterized in that the free end (20) of the firing pins (5) is realized with an edge (21) that is beveled toward the longitudinal axis.
  2. The ignition device according to claim 1, characterized in that the beveled edge (21) forms an angle of 10° to 30° relative to the vertical with the longitudinal axis (4) of the firing pin (5).
  3. The ignition device according to claim 2, characterized in that a respective lateral cutback (22) is provided perpendicular to the beveled edge (21) and forms an angle in the range between 5° and 35° relative to the vertical with the longitudinal axis (4) of the firing pin (5).
  4. The ignition device according to claim 2 or 3, characterized in that the beveled edge (21) is provided with a concave cutback (23) on the side facing away from the longitudinal axis (4).
  5. The ignition device according to claim 4, characterized in that the concave cutback (23) forms an outwardly ascending angle between 1° and 6° with the horizontal.
  6. The ignition device according to one of claims 1 to 5, characterized in that the striking pin (2) is provided with a movable firing head (3).
  7. The ignition device according to claim 6, characterized in that the firing head (3) is arranged on the striking pin (2) in a freely swinging manner.
  8. The ignition device according to claim 7, characterized in that an elastic ring is provided between the firing head (3) and the striking pin (2).
  9. The ignition device according to one of claims 1 to 8, characterized in that the breech face (7) of the guide cylinder (6) has a circular depression (9) that serves for receiving the bottom of the rimfire cartridge.
EP22171137.7A 2021-05-04 2022-05-02 Ignition device for a rimfire cartridge Active EP4086564B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4952021 2021-05-04

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EP4086564A1 EP4086564A1 (en) 2022-11-09
EP4086564B1 true EP4086564B1 (en) 2024-01-31
EP4086564C0 EP4086564C0 (en) 2024-01-31

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Application Number Title Priority Date Filing Date
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EP (1) EP4086564B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793455A (en) 1954-12-06 1957-05-28 Melvin C Wignall Firing pin for firearms
US2952934A (en) * 1956-02-14 1960-09-20 Yovanovitch Lazare Firearm with rearward swinging breech block
US7143537B2 (en) * 2003-11-19 2006-12-05 Ra Brands, L.L.C. Firing pin assembly

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EP4086564A1 (en) 2022-11-09
EP4086564C0 (en) 2024-01-31

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