TRIGGER MECHANISM FOR HAND FIREARMS
The invention concerns a trigger mechanism for hand firearms, in particular pistols, with a striking lever (2) for the actuation of a firing pin (6), a pre-tensioning spring (13) associated with the striking lever (2), a trigger spring (14), associated with the striking lever (2), a striking lever (5) for control of the pre-tensioning spring (13), and a trigger rod (8) which is connected with a trigger (9) at its front end and cooperates with the striking lever (2) and the control lever (5) at its rear end. A particularly compact design is thus attainable in that the pre-tensioning spring (13) and the trigger spring (14) are placed inside the striking lever (2).
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This application claims priority under 35 U.S.C. §119 to European Patent Application No. 09 154 953.5 filed Mar. 12 , 2009, the entire contents of which are incorporated herein by reference.
FIELD OF THE INVENTIONThe invention relates to a trigger mechanism for hand firearms, in particular, pistols.
BACKGROUND OF THE INVENTIONSuch a trigger mechanism is known from EP 1 878 992 A1. There, the necessary firing energy is made available by two striker springs, which are separate from one another and can be individually coordinated with one another. One of the two striker springs is used as a pre-tensioning spring for the storage of a pre-tensioning energy, whereas the second striker spring, which acts as the trigger spring, is cocked by means of the trigger, and determines the trigger force or the trigger resistance. The pre-tension of the pre-tensioning spring can, for example, be effected by the manual actuation of the striking lever or by the breech, which automatically returns with the firing of a shot as a result of the recoil. The trigger spring is cocked via the trigger by the shooter and produces the actual triggering force. The two striker springs together produce the total energy required to fire a cartridge, wherein the trigger resistance is designed to be variable and can be simply adapted to the various needs of the shooter. Within this known trigger mechanism, the two striker springs are placed on separate striker spring rods below the striker element within the pistol stock. A corresponding installation space must be available for this.
SUMMARY OF THE INVENTIONThe goal of the invention is to create a trigger mechanism of the type mentioned above, which also makes possible, in a compact and space-saving type of construction, a pre-tensioning function with a reduced triggering force.
This goal is attained by means of a trigger mechanism with the features as set forth in the claims. Appropriate developments and advantageous refinements of the inventions are indicated in the dependent claims.
With the trigger mechanism in accordance with the invention, the pre-tensioning spring and the trigger spring are placed inside the striking lever. In this way, a trigger pre-tensioning system is created that is made in a compact manner, and even with a small trigger actuation force guarantees a sufficient firing energy of the overall system. The control of the pre-tensioning spring takes place by means of a control lever, which is actuated via the trigger rod and acts together with the pre-tensioning spring for the pre-tension or the release of the pre-tension force.
In a particularly compact and space-saving design, the trigger spring can be located within the pre-tensioning spring and coaxial to it, in the striking lever.
In another advantageous embodiment, the pre-tensioning springs are supported on a pre-tensioning spring guide located in the striking lever, and the trigger spring on a trigger spring guide which is also located in the striking lever. The pre-tensioning spring is advantageously supported on the pre-tensioning spring guide via a spacer sleeve. By the selection of appropriately dimensioned spacer sleeves and pre-tensioning springs, it is therefore possible to change the trigger forces and the trigger characteristics in a simple manner. The changes can be carried out simply and can be accomplished without great expense.
The pre-tensioning spring guide is guided in such a manner that it can be displaced and rotated in the striking lever and has a notch cam for engagement in a latching recess on a latching slot in the striking lever. For the actuation of the pre-tensioning spring guide, the control lever in another constructively appropriate embodiment has a slot for the engagement of the latching cam. The control lever is advantageously used not only for controlling the pre-tensioning spring, but also can control the release or blocking of the firing pin. In this regard, the control lever has a control surface for engagement with a firing pin safety for the release or blocking of the firing pin.
Other distinctive features and advantages of the invention can be deduced from the following description of a preferred embodiment example with reference to the drawing. The figures show the following:
The trigger mechanism of a pistol, shown in perspective in
As can be seen in
The lower end of the radially outer pre-tensioning spring 13 is supported, via a spacer sleeve 18, on an inner annular flange 19 of a sleeve-shaped pre-tensioning spring guide 20, which can be displacably and rotatably guided in the recess 14 of the striker element 2. The sleeve-shaped pre-tensioning spring guide 20 has a detent cam 21 on its outside. This latching cam 21 projects through a lateral slot 22 of the striking lever 2 and engages in a curved slot 23 of the control lever at the untensioned starting position shown in
The mode of operation of the previously described trigger mechanism will be explained below with reference to
In the course of the tensioning process, moreover, the control lever 5 is rotated backwards by means of trigger rod 8, from its front starting position shown in
On the other hand, if the striking lever 2 is pivoted from the starting position shown in
With the movement of the striking lever 2 into the back end position shown in
If the trigger 9 is actuated from this pre-tensioned position, the striking lever 2 is also pivoted backwards via the trigger rod 8 to the release position shown in
At the release position of the striking lever 2 shown in
Claims
1. Trigger mechanism for hand firearms, in particular pistols, with a striking lever for the actuation of a firing pin, a pre-tensioning spring associated with the striking lever, a trigger spring associated with the striking lever, a control lever for control of the pre-tensioning spring, and a trigger rod which is connected with a trigger at its front end and which cooperates with the striking lever and the control lever, wherein the pre-tensioning spring and the trigger spring are placed inside the striking lever.
2. Trigger mechanism according to claim 1, wherein the trigger spring is located within the pre-tensioning spring.
3. Trigger mechanism according to claim 1, wherein the pre-tensioning spring is supported on a pre-tensioning spring guide located inside the striking lever.
4. Trigger mechanism according to claim 1, wherein the pre-tensioning spring is supported on the pre-tensioning spring guide via a spacer sleeve.
5. Trigger mechanism according to claim 1, wherein the trigger spring is supported on a trigger spring guide located inside the striking lever.
6. Trigger mechanism according to claim 5, wherein the trigger spring guide is supported on a striking lever pin.
7. Trigger mechanism according to claim 3, wherein the pre-tensioning spring guide is guided so it can be displaced and rotated inside the striking lever, and contains a latching cam for engagement in a latching recess on a latching slot in the striking lever.
8. Trigger mechanism according to claim 7, wherein the control lever comprises a slot for engagement with the latching cam on the pre-tensioning spring guide.
9. Trigger mechanism according to claim 1, wherein the control lever comprises a control surface for the actuation of a firing pin safety for the release or blocking of the firing pin.
10. Trigger mechanism according to claim 1, wherein the trigger rod is associated with an interrupter lever for controlling the engagement of the trigger rod with the striking lever.
11. Trigger mechanism according to claim 7, wherein a stop for the actuation of the latching cam on the pre-tensioning spring guide is associated with the striking lever.
12. Trigger mechanism according to claim 1, wherein the trigger rod is pre-tensioned by a trigger rod spring.
Type: Application
Filed: Dec 21, 2009
Publication Date: Sep 16, 2010
Applicant: J.P. SAUER & SOHN GMBH GEGR. 1751 (Eckernforde)
Inventor: Thomas METZGER (Eckernforde)
Application Number: 12/643,232
International Classification: F41A 19/10 (20060101);