CN2178345Y

CN2178345Y - Firing pin type single-trigger firing linkage mechanism

Info

Publication number: CN2178345Y
Application number: CN93246372U
Authority: CN
Inventors: 何厚生; 曹千贵; 张越
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 1993-12-08
Filing date: 1993-12-08
Publication date: 1994-09-28
Anticipated expiration: 2003-12-08

Abstract

The utility model relates to a firing pin type single-trigger firing linkage mechanism, which comprises a firing mechanism, a gun bottom grip and a launching mechanism. The utility model is characterized in that the launching mechanism is composed of a trigger, a trigger connecting lever, a shifting fork, a safety disengaging lever and a sear. The shifting fork, the safety disengaging lever and the sear are all arranged on an axis of the sear. The utility model has the advantages that a firing pin moves from a firing position to a to-be firing position by pulling the trigger when initial shooting starts, and firing pin type gun has a single firing function as well as a linkage function. The utility model can be used in both firing pin guns and other fire arms that need to realize linkage.

Description

Firing pin type single-trigger firing linkage mechanism

The utility model relates to a kind of trigger mechanism, particularly a kind of firing pin type single-shot link gear.

Pistol uses very extensive.The pistol trigger method mainly contains two kinds, and a kind of is the hammer formula, and a kind of is firing pin type.Modern pistol requires will lack launch time to bullet from bullets loading, sells and wants fast, therefore, requires to reduce warming-up exercise as far as possible.Realize that pistol interlock function is exactly in order to reduce preparation, because have the pistol of interlock function, as long as the hand triggering pulling just can make hammer or firing pin pull the trigger emission bullet by the percussion state-transition again to arm-to-arm, this can exempt other shooting warming-up exercise when first shooting.At present, hammer formula pistol generally has single-shot and interlock function, and the firing pin type pistol fails to realize the interlock function owing to the reason of its structure and volume, when first shooting, also needs both hands to cooperate, and the pulling sleeve makes firing pin be in arm-to-arm.

The purpose of this utility model provides a kind of single-shot function that both had, and has the firing pin type single-shot link gear of interlock function again.

The purpose of this utility model is achieved in that it comprises firing lock, has the gun bottom hold of sear pivot and contains the trigger mechanism of trigger, trigger bar, safety release lever, is characterized in that trigger mechanism also contains shift fork and the sear that is enclosed within on the sear pivot; One side that trigger bar contacts with sear pivot is provided with the location curved surface of control shift fork movement locus; The oblong slots that can be enclosed within on the sear pivot and can do translation and rotation is arranged in the middle of the shift fork, the underarm of shift fork and trigger bar hinge knot, upper arm is one and works as shift fork under the drive of trigger bar, by stirring the projection on the firing pin in the firing lock, break away from this protruding driving lever after firing pin pulled back a segment distance; The sear upper arm hinged one by stoping projection on the firing pin to tangle the sear head of firing pin, that underarm has a unidirectional fastening safety release lever and make it to drive the bending of rotating by the hinge between trigger bar and the shift fork; Trigger bar and sear are respectively and be provided with the support spring that makes it to be in original state between the gun bottom hold.Location curved surface on the trigger bar is made up of many sections circular arcs, and the curvature of its circular arc and the length of circular arc depend on the physical dimension of parts and mutual cooperation.Rear portion or other positions at trigger bar have a projection to extend in the gunlock arc groove, when the gunlock back seat, and its arc groove pushing the back down machine connecting rod.Shift fork is to realize that the interlock function is promptly when first shooting, cocking just can make firing pin forward the strength member of arm-to-arm to from the percussion state, the length of its upper arm driving lever is can dial the projection on the firing pin and to have made it motion compresses spring backward, making spring energy enough pull the trigger bullet is standard, during actual design, on the upper arm of shift fork, there is one to become forked pin side by side in the driving lever back and with driving lever, when guaranteeing not need the interlock shooting at single-shot, pull gunlock, pin by on the drive of the projection on the firing pin shift fork finally drives trigger to reduce stroke.Preferably adopt hinge knot mode between sear head on the sear and the sear, the sear head can rotate around hinge like this, when sear when sear pivot rotates, can guarantee that the sear head only makes rising and decline rectilinear motion.It is to fasten mutually on one side that the underarm of safety release lever and sear has only, promptly when the safety release lever underarm during to left movement certain sear underarm that drives simultaneously to left movement, and can not drive safety release lever during to left movement simultaneously to left movement when the sear underarm, Here it is so-called unidirectional fastening.Operation principle of the present utility model is: when firing pin is in firing position, cocking, trigger bar drives shift fork and rotates and make driving lever stir projection on the firing pin, firing pin is pulled back, under location curved surface on the trigger bar and sear pivot interaction, shift fork move down gradually and firing pin backward during the motion certain distance driving lever break away from projection on the firing pin, firing pin realizes that under its spring power effect first interlock pulls the trigger.After the percussion, during the gunlock back seat, the downward trigger squeeze connecting rod of the circular groove on the gunlock makes safety release lever, sear separate with trigger bar.Sear is under its spring power effect, the sear head rises, when gunlock, firing pin advance again, projection on the firing pin is fastened by the sear head again, this moment, hand was decontroled trigger, and trigger bar makes progress under the effect of support spring, motion backward, and the front that makes its rear end hinge return to safety release lever and sear underarm again becomes arm-to-arm, when cocking once more, firing pin will be freed again realizes percussion.During single-shot, pull gunlock, the pin that firing pin drives on the shift fork moves backward, when the sear head tangles firing pin, in the back of sear head, at this moment, trigger has been rotated counterclockwise with the rotation of shift fork and has shortened stroke pin by projection retaining, during percussion only gently cocking can pull the trigger, process is after this pulled the trigger the same with interlock.

The utility model compared with prior art, its great advantage is to have realized the interlock function, promptly when shooting first, only cocking just can make firing pin forward cocked orientation to and pull the trigger emission from firing position after bullet loads.Thereby reduced the warming-up exercise of preshot, realized that the firing pin type pistol not only has the single-shot function but also have a connection function.This firing pin type single-shot link gear both can be used on the firing pin type pistol, can be used for again on the firearms that other kind need realize linking.

Concrete structure of the present utility model is described in detail by the following drawings and embodiment:

Fig. 1 is a firing pin type single-shot link gear structural representation.

Fig. 2 is the shift fork structural representation.

Fig. 3 is the sear structural representation.

Embodiment: as shown in Figure 1, firing pin type single-shot link gear is made up of firing lock ［ 1 ］, the gun bottom hold ［ 3 ］ and the trigger mechanism that have sear pivot ［ 2 ］.Firing lock ［ 1 ］, gun bottom hold ［ 3 ］ are the same with existing firing pin type pistol.Trigger mechanism is made up of trigger ［ 4 ］, trigger bar ［ 5 ］, shift fork ［ 7 ］, safety release lever ［ 6 ］ and sear ［ 8 ］.Trigger ［ 4 ］, safety release lever ［ 6 ］ are the same with existing pistol.The two ends bending of trigger bar ［ 5 ］, preceding kink is connected with trigger ［ 4 ］, and back kink is connected with shift fork ［ 7 ］.The position that trigger bar ［ 5 ］ contacts with sear pivot ［ 2 ］ is the location curved surface, has in the upper rear end of trigger bar ［ 5 ］ and stretches into the projection in the arc groove in the gunlock.Shift fork ［ 7 ］ is a sheet part as shown in Figure 2, and in the middle of it oblong slots, upper arm being arranged is two prongs arranged side by side, and preceding prong is a push rod, and back prong is a pin, and underarm and trigger bar ［ 5 ］ hinge is tied and made it to be in original state by spring support.As shown in Figure 3, sear head of hinge knot on the sear upper arm, the below that is positioned at the sear head on sear ［ 8 ］ has spring support sear ［ 8 ］ to make it to be in original state, and sear ［ 8 ］ underarm has one to bend inwards, and fastens with safety release lever ［ 6 ］ underarm.During assembling, successively safety release lever ［ 6 ］, sear ［ 8 ］, shift fork ［ 7 ］ are contained on the sear pivot ［ 2 ］, trigger bar ［ 6 ］ one ends insert on the shift fork ［ 7 ］ from the inside, and all the other positions and existing firing pin type pistol are roughly the same.

Claims

A kind of firing pin type single-shot link gear, it comprises firing lock [1], have the gun bottom hold [3] of sear pivot [2] and contain the trigger mechanism of plate machine [4], trigger bar [5], safety release lever [6], it is characterized in that trigger mechanism also contains shift fork [7] and the sear [8] that is enclosed within on the sear pivot [2]; One side that trigger bar [5] contacts with sear pivot [2] is provided with the location curved surface of control shift fork [7] movement locus; Have in the middle of the shift fork [7] and can be enclosed within the oblong slots that translation and rotation were gone up and can be done to sear pivot [2], the underarm of shift fork [7] and trigger bar [5] hinge knot, upper arm is one and works as shift fork [7] under the drive of trigger bar [5], by stirring the projection on the firing pin in the firing lock [1], break away from this protruding driving lever after firing pin pulled back a segment distance; Sear [8] upper arm hinged one by stoping projection on the firing pin to tangle the sear head of firing pin, that underarm has a unidirectional fastening safety release lever [5] and make it to be provided with the support spring that makes it to be in original state respectively and between the gun bottom hold [3] by bending trigger bar [5] and sear [8] that the drive of the hinge between trigger bar [5] and the shift fork [7] is rotated.