CN-121977383-A - Shell-drawing hook mechanism of firearm with open-type shell-drawing hook groove

CN121977383ACN 121977383 ACN121977383 ACN 121977383ACN-121977383-A

Abstract

The invention discloses a shell-pulling hook mechanism of a firearm with an open shell-pulling hook groove, which uses a stronger shell-pulling hook spring, has a large rotating angle, is simple to process and is reliable in shell pulling. The bolt is characterized in that a bolt is provided with a shell drawing hook groove, a shell drawing hook is hinged in the shell drawing hook groove, a shell drawing hook spring is arranged between the shell drawing hook groove and the shell drawing hook, the shell drawing hook is provided with a shell drawing hook spring hole, a shell drawing hook front rotation limiting surface, a shell drawing hook rear rotation limiting surface and a limiting plane, the shell drawing hook spring hole is of a conical structure, the joint sleeve is fixedly provided with a shell drawing hook cushion block, the shell drawing hook cushion block is provided with a plane and a guide chamfer, the joint sleeve is provided with an inclined plane, when the bolt is reeled in, the limiting plane is matched with the inclined plane of the joint sleeve and the corresponding guide chamfer of the shell drawing hook cushion block, the shell drawing hook is forced to rotate around a shell drawing hook shaft, the shell drawing hook is forced to hold the shell, and when the bolt is backset, the limiting plane is matched with the plane of the shell drawing hook cushion block, the rotating unhooking of the bolt is prevented, and the shell drawing process is guaranteed.

Inventors

WANG YANG
LIN YANG
SHI LIN
CHEN DAIPING
LIU TAO
WANG ZHI
CHEN DENGCAI

Assignees

重庆建设工业(集团)有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260330

Claims (7)

1. The utility model provides a take out open firearm of shell hook groove and take out shell hook mechanism, includes rifle bolt, festival cover, be equipped with on the rifle bolt and take out shell hook groove, take out shell hook inslot and hinge through taking out shell hook axle and take out shell hook, take out shell hook groove, take out to be equipped with between the shell hook and take out shell hook spring, its characterized in that: The front end of the gun machine is provided with a gun machine front rotation limiting surface and a gun machine rear rotation limiting surface, the front rotation limiting surface and the rear rotation limiting surface of the gun machine are respectively matched with the front rotation limiting surface and the rear rotation limiting surface of the gun machine, the rotation angle of the gun machine is limited, the shell drawing hook spring hole of the conical structure is used for adapting to the rotation position change of the shell drawing hook, and the limiting plane is positioned outside a hook head of the shell drawing hook and at least partially protrudes out of the corresponding surface of the gun machine; The joint sleeve is fixedly provided with a shell-drawing hook cushion block, the shell-drawing hook cushion block is provided with a plane, guide chamfers are respectively arranged on two sides of the plane, and the joint sleeve is provided with an inclined plane; when the gun camera is re-advanced, the limiting plane is matched with the inclined plane of the joint sleeve and the corresponding guide chamfer of the shell-drawing hook cushion block to force the shell-drawing hook to rotate around the shell-drawing hook shaft so as to realize the forced holding of the shell by the shell-drawing hook; when the gunlock is in a back-sitting state, the limiting plane is matched with the plane of the shell-drawing hook cushion block, so that the shell-drawing hook is prevented from rotating and unhooking, and the shell-drawing process is ensured.
2. The firearm casing hook mechanism with the open casing hook groove is characterized in that the rear rotation limiting surface of the bolt is the bottom surface of the casing hook groove, the front rotation limiting surface of the bolt is a step surface in front of the casing hook groove, and the positions of the front rotation limiting surface of the casing hook and the rear rotation limiting surface of the casing hook correspond to the front rotation limiting surface of the bolt and the rear rotation limiting surface of the bolt respectively.
3. The open-type firearm casing hook mechanism with the casing hook groove according to claim 2, wherein the front space of the casing hook groove is closed by a step where the front rotation limiting surface of the bolt is located, the front end surface of the step is a bolt mirror surface, and the bolt mirror surface is not damaged when the casing hook groove is processed.
4. The firearm casing hook mechanism with the open casing hook groove of claim 1, wherein the bolt is provided with a bolt casing hook spring pin, the bolt casing hook spring pin is positioned in the casing hook groove, the casing hook is provided with a hook casing hook spring pin, the hook casing hook spring pin is positioned in the casing hook spring hole, and two ends of the casing hook spring are respectively hung and fixed on the bolt casing hook spring pin and the hook casing hook spring pin.
5. The firearm casing hook mechanism with the casing hook slot open is characterized in that a front rotation limiting surface of the casing hook is positioned between a hook head of the casing hook and a casing hook shaft, and a rear rotation limiting surface of the casing hook is of an open structure.
6. The firearm casing hook mechanism with the casing hook groove open type is characterized in that the casing hook cushion block is fixed through a screw and a gasket, a rectangular groove and a groove are formed in a joint sleeve, the rectangular groove is used for accommodating the tail of the casing hook cushion block, and the groove is used for accommodating the screw and the gasket.
7. The firearm casing hook mechanism with the casing hook slot open type according to claim 1, further comprising a limiting cushion block, wherein the limiting cushion block is provided with a limiting plane, cushion block guide chamfers are respectively arranged on two sides of the limiting plane, the limiting plane is used for preventing unlocking of the casing hook, and the cushion block guide chamfers are used for forcing the casing hook to rotate in place.

Description

Shell-drawing hook mechanism of firearm with open-type shell-drawing hook groove Technical Field The invention relates to the technical field of firearms, in particular to a firearm casing-drawing hook mechanism with an open casing-drawing hook groove. Background The shell extraction mechanism is a common mechanism in firearms. The design of taking out shell hook spring hole is dug to traditional shell mechanism mostly adopts the center, and its taking out shell hook hole is typical blind hole, enclosed construction, and not only the processing degree of difficulty is great, and because the space is limited, traditional shell mechanism often has to take out shell hook spring hole edge intensity poor, take out shell hook spring hole space weak defect, is difficult to use stronger taking out shell hook spring, also has certain restriction to taking out shell hook's rotation angle. In addition, the shell drawing hook of the traditional shell drawing mechanism is not in contact with firearm parts such as a joint sleeve and a receiver, and has no matching relationship, so that the problem of unhooking of the shell drawing hook under larger acceleration is difficult to solve, and particularly, the unhooking problem when using a gun with an inclined bottom edge is difficult to solve. The bolt face of the bolt is often incomplete, is difficult to adapt to the bullet of higher rifle pressure, and the high rifle pressure is liable to lead to the bullet bottom surface to warp, falls the primer. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a firearm shell-pulling hook mechanism with an open shell-pulling hook groove, which has the advantages of being capable of using a thicker shell-pulling hook spring, having a large rotating angle, being simple to process, avoiding the problem of unhooking the shell-pulling hook when using a gun bullet with an inclined bottom edge under a large acceleration, and having high shell-pulling reliability. The purpose of the invention is realized in the following way: the firearm casing hook mechanism with an open casing hook groove comprises a bolt and a joint sleeve, wherein the bolt is provided with a casing hook groove, a casing hook is hinged in the casing hook groove through a casing hook shaft, a casing hook spring is arranged between the casing hook groove and the casing hook, The front end of the gun machine is provided with a gun machine front rotation limiting surface and a gun machine rear rotation limiting surface, the front rotation limiting surface and the rear rotation limiting surface of the gun machine are respectively matched with the front rotation limiting surface and the rear rotation limiting surface of the gun machine, the rotation angle of the gun machine is limited, the shell drawing hook spring hole of the conical structure is used for adapting to the rotation position change of the shell drawing hook, and the limiting plane is positioned outside a hook head of the shell drawing hook and at least partially protrudes out of the corresponding surface of the gun machine; A shell-drawing hook cushion block is fixed in the joint sleeve, the shell-drawing hook cushion block is provided with a plane, guide chamfers are respectively arranged on two sides of the plane, and an inclined plane is arranged on the joint sleeve; when the gun camera is re-advanced, the limiting plane is matched with the inclined plane of the joint sleeve and the corresponding guide chamfer of the shell-drawing hook cushion block to force the shell-drawing hook to rotate around the shell-drawing hook shaft so as to realize the forced holding of the shell by the shell-drawing hook; when the gunlock is in a back-sitting state, the limiting plane is matched with the plane of the shell-drawing hook cushion block, so that the shell-drawing hook is prevented from rotating and unhooking, and the shell-drawing process is ensured. Preferably, the rear rotation limiting surface of the bolt is the bottom surface of the shell drawing hook groove, the front rotation limiting surface of the bolt is a step surface in front of the shell drawing hook groove, and the positions of the front rotation limiting surface of the shell drawing hook and the rear rotation limiting surface of the shell drawing hook correspond to the front rotation limiting surface of the bolt and the rear rotation limiting surface of the bolt respectively. Preferably, a step where the front rotation limiting surface of the bolt seals the front space of the bolt face drawing hook groove, the front end surface of the step is a bolt face, and the bolt face is not damaged when the bolt face drawing hook groove is processed. Preferably, a bolt machine casing hook spring pin is arranged on the bolt machine, the bolt machine casing hook spring pin is positioned in a casing hook groove, a hook body casing hook spring pin is arranged on the casing hook, the hook body casing hook spring pin is positio