RU2583122C2 - Trigger mechanism - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: trigger mechanism comprises the case, spring loaded sear, trigger, rocker and adjusting screws. It includes the safety arranged in said case and including the locking element with thrust site, link with tracer groove and safety control lever. Said safety control lever is engaged with the link by the tracer groove, said link being provided with the trigger locking thrust made from the side of locking element. The link with the tracer groove can reciprocate to interact with the locking element. The latter is arranged to be displaced by said link to lock the sear by its thrust site and the bolt by its extending part.

EFFECT: higher safety, ruled out random shot, simplified design.

2 dwg

Description

The invention relates to the field of weapons technology, namely, the triggers of small arms with fuses, for example, for hunting carbines with a longitudinally-sliding bolt.

The prior art trigger mechanism with a fuse according to patent US 5216190 A, 06/01/1993, selected as an analogue. The trigger mechanism includes a housing, a sear, a rocker, a trigger, a screw for adjusting the stroke of the trigger and a fuse made in the form of a rod and blocking the movement of the shutter. The disadvantages of the prototype are that the design of the specified trigger does not have additional adjustments of the descent and prestarting effort on the trigger. In addition, blocking only the shutter is not enough, since with increased force on the shutter handle, the cartridge is sent to the chamber with a subsequent shot.

The prior art trigger mechanism according to patent RU 126815 U1, 04/10/2013, selected as the closest analogue (prototype). The trigger mechanism includes a housing, a spring-loaded sear, a trigger with a spring and adjusting screws installed in the housing and including a screw for adjusting the trigger force, a screw for adjusting the overlap of the sear with a rocker, a screw for adjusting the force of the preliminary trigger. The disadvantages of the prototype are that the design of the specified trigger mechanism does not have a fuse built into the trigger mechanism.

The technical result of the claimed invention is to improve the reliability of protection of small arms from an accidental shot (self-timer) by blocking the elements of the trigger mechanism - whisper and trigger and element of the bolt group - the shutter, as well as simplifying the design of the safety mechanism by placing the safety mechanism directly in the housing trigger mechanism.

The technical result of the claimed invention is ensured by the fact that the trigger mechanism comprises a housing, a spring-loaded sear, a spring-loaded trigger and a rocker. The trigger contains adjustment screws installed in the housing and includes a trigger for adjusting the trigger pull, a screw for adjusting the overlap of the sear with the rocker arm, a screw for adjusting the trigger pull that acts on the trigger, a screw for adjusting the trigger trigger, a screw for adjusting the trigger bias for the finger arrow. The trigger mechanism includes a safety mechanism located in the housing and containing a blocking element in the form of, for example, a rod with a thrust pad, a traction with a copy groove and a fuse control lever. The lever is connected to a rod, on which a stop is made on the side of the blocking element to lock the trigger. The thrust has the ability to reciprocate to interact with the blocking element. The blocking element is mounted in the housing with the possibility of movement by acting on it with a traction with a copy groove to block the sear in its thrust pad, and also the shutter through its protruding part.

The invention is illustrated by the following illustrations:

FIG. 1 - trigger fuse position in the "protection" mode;

FIG. 2 - trigger fuse position in the "fire" mode.

The trigger mechanism comprises a trigger housing (1), a sear (2), a trigger (3), a rocker (4), a trigger for adjusting the trigger pull (5), a screw for adjusting the overlap of the sear with a rocker (6), a screw for adjusting the trigger trigger (7), pre-release stroke adjustment screw (8), trigger shift adjustment screw (9), locking element (10), thrust pad of the locking element (11), traction with a copy groove (12), fuse control lever (13) trigger lock (14), trigger (15) , hook (16).

The trigger device operates as follows.

The trigger mechanism includes a housing (1), a spring-loaded sear (2), a rocker (4) and a trigger (3), made integral and consisting of a connected trigger (15) and an adjustable hook (16). The beam (4) is approximately located between the sear (2) and the trigger (3). The beam (4) is spring-loaded and has a screw for adjusting the overlap of the sear with the beam (6). The trigger (3) has the ability to adjust due to the screw adjusting the trigger force (5), the screw adjusting the force of the preliminary trigger (7), the screw adjusting the stroke of the preliminary trigger (8) acting on the beam (4). In addition, the trigger (3) has the additional possibility of adjustment with the possibility of shifting the hook (16) forward or backward relative to the axis of the barrel of the small arms by means of the bias trigger (9) located in the body of the hook (16). The hook (16), for example, is connected to the trigger lever (15) via a T-slot. The safety mechanism is compactly placed in the trigger housing (3), in the lower part of the housing of which there is a handle for the fuse control lever (13). The fuse control lever (13) has two fixed positions and is located mainly in front of the trigger (3) for ease of operation. The fuse control lever (13) is fixed by means of fixing elements, for example, balls made in the lever body and spring-loaded with a bracket, and entering when the lever (13) moves to the holes corresponding to their position, made in the body and cover (not shown) of the trigger mechanism (1). The fuse control lever (13) is connected to the rod (12), in which the copy groove is made. The traction copy groove (12) is designed to move the blocking element (10) along it, made in the form, for example, of a rod with a thrust pad (11) and oriented mainly vertically to move it up and down.

When moving the fuse control lever (13) to the “firing” position, the thrust with a copy groove (12) makes a reciprocating movement, shifting to the opposite direction to the movement of the fuse control lever (13). When the rod (12) is moved, a blocking element (10) connected to the rod (12) by a pin moves along the copy groove and moves together with the rod (12), dropping down to release the bolt of the small arms, and it will also whisper ( 2) due to the fact that the thrust pad (11) of the blocking element (10) also falls down. In addition, the trigger (3) is released, in particular the trigger lever (15), since the lock blocking trigger (14), made in traction with a copy groove (12), no longer locks it. When moving the fuse control lever (13) to the “protection” position, the thrust with a copy groove (12) makes a reverse movement, shifting in the opposite direction from the “firing” position, and pulls the blocking element moving along the copy groove of the thrust (12) ( 10). Blocking occurs after the blocking element (10) takes its upper position, resting its thrust pad (11) in the trigger mechanism housing (1), in which its protruding part will lock the shutter for locking, and its thrust pad (11) will block movement whispered (2). In this case, the trigger (3) is also blocked from moving due to the fact that the stop (14) of the rod (12) locks the trigger lever (15).

The trigger fuse has the specifics of blocking both the elements of the trigger itself - the whisper and the trigger, and the elements of the bolt group - the shutter, which improves the protection of the weapon from an accidental shot. The trigger mechanism itself consists of a minimum number of parts, it is easy to assemble and maintain, since it does not require special tools and equipment. All rubbing elements of the trigger mechanism are hardened, which minimizes their wear. Trigger adjustments are made without disassembling the rifle. Thanks to the balanced trigger, the possibility of self-timer is minimized with minimal trigger effort.

Claims (1)

A trigger mechanism comprising a housing, spring-loaded sear, trigger and rocker, adjusting screws installed in the housing and including a trigger for adjusting the trigger, screw for adjusting the overlap of the sear with a rocker, a screw for adjusting the pre-trigger force acting on the trigger, characterized in that it contains a screw for adjusting the pre-release stroke and a screw for adjusting the bias of the trigger, a safety mechanism located in the housing and containing a locking element with the platform, the traction with a copy groove and the fuse control lever connected to the specified traction, on which the stop is made on the side of the blocking element to lock the trigger, the specified traction has the possibility of reciprocating movement to interact with the blocking element installed with the possibility of movement by means of exposure on him the specified thrust for blocking whispered by its thrust pad, as well as the shutter by means of its protruding part.

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