CN202304591U

CN202304591U - Segmented-compression-type firing mechanism

Info

Publication number: CN202304591U
Application number: CN 201120346012
Authority: CN
Inventors: 代安源; 龚建; 袁安; 龙建华
Original assignee: Chongqing Jianshe Motorcycle Co Ltd
Current assignee: Chongqing Jianshe Industry Group Co Ltd; Chongqing Jianshe Motorcycle Co Ltd
Priority date: 2011-09-15
Filing date: 2011-09-15
Publication date: 2012-07-04
Anticipated expiration: 2021-09-15

Abstract

The utility model discloses a segmented-compression-type firing mechanism which comprises a rifle bolt body, a firing pin, a firing pin spring, a rifle bolt tail and a firing pin tail, wherein the firing pin and the firing pin spring are positioned in the rifle bolt body; the rifle bolt tail is joined to the rear part of the rifle bolt body; the firing pin tail is joined to the rear parts of the rifle bolt body and the rifle bolt tail; and the rear end of the rifle bolt body is provided with an unlocking spiral surface which acts with the firing pin tail mutually. The segmented-compression-type firing mechanism is characterized in that the lift angle of the unlocking spiral surface is 45 degrees; the rifle bolt body is also provided with a pair of support lugs which relatively extend outward horizontally; and the lateral sides of the outward-extending rear end surfaces of the two support lugs are provided with a pair of chamfers in opposite directions. According to the utility model, the segmented compression principle is adopted, the compression of the firing pin spring is divided into two steps, rifle bolt starting force is reduced radically under the condition that the total firing energy is ensured to be unchanged, and the time required for rifle bolt starting is shortened, thus the operation comfortability is intensified greatly, the firearm using performances are improved, and the phenomenon that the firing accuracy is influenced by firing fatigue of the operators can not happen easily.

Description

Segmentation compression firing lock

Technical field

The utility model relates to the firearms field, especially a kind of segmentation compression firing lock that is applicable to single-shot bolt dynamic formula gunlock.

Background technology

Bolt dynamic formula gunlock uses extensively at the single-shot sniper rifle, and its blocking mechanism, firing lock, extractor all are arranged on the gunlock, and be simple and reliable for structure.The shooting of single-shot bolt dynamic formula gunlock comprises pushing away and springs into cartridge chamber, locking cartridge chamber, percussion bullet, opens cartridge chamber (unblanking), takes out processes such as shell and ejection.

The firing lock of existing bolt dynamic formula gunlock is generally integral installation and fits in the casing body; Its structure comprises the gunlock body, be positioned at firing pin of gunlock body (hammer) and striker spring, be connected in the tail at gunlock body rear portion and be connected in the parts such as firing pin tail at gunlock body and tail rear portion and form; Wherein gunlock body front end has the perforate that can pass for the striker head end; Striker spring is socketed on the firing pin and is crimped between the ring-shaped step and tail on the firing pin; The firing pin rear end passes tail slidably and is fixed on the firing pin tail, and gunlock body rear end has and is used for the helicoid of unblanking that acts on mutually with the firing pin tail, and the lift angle of the helicoid of unblanking is about 60 °.When the gunlock body unblanked to rotate, tail did not rotate under the casing body effect, and the firing pin tail is under the effect of gunlock body helicoid, and it is parallel backward mobile to drive firing pin, compresses striker spring simultaneously, and gunlock unblanks to accomplish.After taking out shell and ejection, push away springing into cartridge chamber, before gunlock is pushed to, advancing again in the process, the buckling surface of firing pin tail below lug boss front end is fastened by emitter, enters the position this moment again, accomplishes locking, can supply to pull the trigger once more.

This single-shot bolt dynamic formula gunlock pushes away in completion and springs into cartridge chamber, locking cartridge chamber, percussion bullet, opens cartridge chamber (unblanking), takes out in the mechanism action process of shell and ejection; Institute's energy requirement provides by operator (shooter), and shooter need use certain power when opening cartridge chamber---and play machine power, rotate a certain angle; Could open cartridge chamber; In the process of opening cartridge chamber, striker spring is once compressed to put in place, is next bullet stored energy of percussion lock percussion.But find that in use behind the percussion bullet, the machine power that need use when rotating gunlock unlatching cartridge chamber is bigger; If it is too big to play machine power, shooter needs bigger power in the process of opening cartridge chamber, needs the long time of the application of force simultaneously; Just can unblank, use uncomfortablely, be prone to that shooting is tired, Firing Velocity slow and problem such as aiming point change; Influence fire accuracy, man-machine effect is poor.

The utility model content

To the deficiency of above-mentioned prior art, the utility model technical problem to be solved is, how a kind of machine power that rises of unblanking after can reducing to pull the trigger is provided, and improves the segmentation compression firing lock of firearms serviceability.

The utility model has adopted following technical proposals to solve the technical problem.

A kind of segmentation compression firing lock; Comprise the gunlock body, be positioned at the gunlock body firing pin (hammer) and striker spring, be connected in the tail at gunlock body rear portion and be connected in the firing pin tail at gunlock body and tail rear portion; Striker spring is socketed on the firing pin and is crimped between the ring-shaped step and tail on the firing pin; The firing pin rear end passes tail slidably and is fixed on the firing pin tail; Gunlock body rear end has and is used for the helicoid of unblanking that acts on mutually with the firing pin tail, and it is characterized in that the lift angle of the said helicoid of unblanking is about 45 °; Also be provided with a pair of journal stirrup that horizontal extension is relatively stretched on the said gunlock body, have a pair of chamfering in the opposite direction on two outward extending sides of journal stirrup rear end face.Said chamfering is used to make the gunlock body to enter the position again.

The inventor analyzes prior art, under the cooperation of the emitter and the body of a gun, accomplishes the bullet firing action, reduce machine power, just needs in the shortening switching process compression travel to striker spring.But accomplish the percussion function, then need keep the compression energy of striker spring constant.So the applicant improves firing lock on version and action principle, at twice striker spring is compressed after the improvement and store and pull the trigger energy.At first, the unblank lift angle of helicoid of gunlock body rear end is changed into about 45 ° by former about 60 °, reduce lead angle on the gunlock body; Under the constant situation of striker spring spring power, directly reduced machine power, meanwhile; Under the certain situation of rotational angle, the compressed stroke of striker spring also is reduced, when gunlock unblanks to rotate; Tail does not rotate under the casing body effect, under the firing pin tail is unblanked the effect of helicoid in gunlock body rear end, drives that firing pin is parallel backward to be moved; Compress striker spring simultaneously, when gunlock unblanked to accomplish, the firing pin tail drove firing pin and moves the first time compression of segment distance completion to striker spring backward; This segment distance generally can be set to general 6 ㎜ (according to the needs of structural design with the percussion energy, also can design different numerical), and storage compartment was pulled the trigger energy after striker spring was compressed 6 ㎜.Then in the process that pushes away bullet, locking, before gunlock is pushed to, when advancing again, apart from entering the position again when also differing from a segment distance; General 3 ㎜ of this segment distance, this segment distance and 6mm before form the compressed distance of striker spring (according to structural design, can design different numerical) together; The emitter that the buckling surface of firing pin tail below lug boss front end has promptly been changed the position fastens, and percussion assembly (referring to firing pin tail and firing pin) is bottled up, and no longer answers into; Take to rotate the mode of gunlock body this moment again, beginning complete atresia cartridge chamber rotates the gunlock body; Make on two journal stirrups of gunlock body chamfering with set up chamfering on the latch surfaces in casing (or helicoid) effect, the gunlock body will be compelled to make spiral and advance again, realize that striker spring is compressed for the second time; Store the percussion energy for the second time, enter the back, position again and accomplish locking, can supply to pull the trigger once more.Like this, through the design of segmentation compression mainspring, when the percussion energy reaches the requirement of percussion bullet, the machine power that rises when having reduced to unblank.

In sum, so than prior art, the utility model adopts the principle of segmented compression; The compression of striker spring is divided into two steps, so guaranteeing fundamentally to have reduced a machine power under the constant situation of percussion gross energy; Shortened a machine required time; So strengthened operation comfort greatly, improved the firearms serviceability, operating personnel can not occur shooting fatigue and the phenomenon that influences fire accuracy easily.

Description of drawings

Fig. 1 is the overall structure sketch map of the utility model.

Fig. 2 is the structural representation of the independent gunlock body portion of the utility model.

Fig. 3 is the left view of Fig. 2.

Fig. 4 is the cutaway view of the utility model.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further to specify.

During practical implementation; Extremely shown in Figure 4 like Fig. 1; A kind of segmentation compression firing lock; Comprise gunlock body 3, be positioned at gunlock body 3 firing pin 4 (hammer) and striker spring 5, be connected in the tail 6 at gunlock body 3 rear portions and be connected in the firing pin tail 8 at gunlock body 3 and tail 6 rear portions, striker spring 5 is socketed on the firing pin 4 and is crimped between the ring-shaped step and tail 6 on the firing pin 4, firing pin 4 rear ends pass tail 6 slidably and are fixed on the firing pin tail 8; Gunlock body 3 rear ends have and are used for the helicoid 1 of unblanking that acts on mutually with firing pin tail 8, and the lift angle of the said helicoid 1 of unblanking is about 45 °; Also be provided with on the said gunlock body on 9, two outward extending sides of journal stirrup 9 rear end faces of a pair of journal stirrup that relatively horizontal extension is stretched and have a pair of chamfering 2 in the opposite direction.Said chamfering is used to make gunlock body 3 to enter the position again.Label 7 is the buckling surface of firing pin tail 7 below lug boss front ends among the figure.

This segmentation compression firing lock is guaranteeing fundamentally to have reduced machine power under the constant situation of percussion gross energy: in opening the cartridge chamber process, only striker spring is carried out the part compression, and storage area percussion energy, thus reduce the machine power that rises in the process of unblanking; In the locking process, once more striker spring is compressed, storage area is penetrated and is sent out energy, reaches the gross energy requirement of percussion bullet, finally reaches to have reduced machine power, improves the purpose of man-machine effect.

Claims

1. segmentation compression firing lock; Comprise the gunlock body, be positioned at the gunlock body firing pin and striker spring, be connected in the tail at gunlock body rear portion and be connected in the firing pin tail at gunlock body and tail rear portion; Striker spring is socketed on the firing pin and is crimped between the ring-shaped step and tail on the firing pin; The firing pin rear end passes tail slidably and is fixed on the firing pin tail; Gunlock body rear end has and is used for the helicoid of unblanking that acts on mutually with the firing pin tail, and it is characterized in that the lift angle of the said helicoid of unblanking is 45 °; Also be provided with a pair of journal stirrup that horizontal extension is relatively stretched on the said gunlock body, have a pair of chamfering in the opposite direction on two outward extending sides of journal stirrup rear end face.