Pre-shell extraction mechanism for straight-pull bolt type sporting rifle

A technology for sports rifles and straight-pull bolts, which is applied in the field of firearms and can solve problems such as the inability to design a pre-extraction mechanism, large extraction resistance, etc.

Active Publication Date: 2021-10-22
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional straight-pull bolt-action rifle cannot design a pre-extraction mechanism, and there is a large resistance to extraction

Method used

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  • Pre-shell extraction mechanism for straight-pull bolt type sporting rifle
  • Pre-shell extraction mechanism for straight-pull bolt type sporting rifle
  • Pre-shell extraction mechanism for straight-pull bolt type sporting rifle

Examples

Experimental program
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Embodiment Construction

[0022] In order to make the purpose, technical solution and creative characteristics of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, a pre-extraction mechanism for a straight-pull action rifle according to the present invention includes a barrel 1 , a joint 2 , a casing 3 , a action 4 , an opening and closing guide post 5 , and a action frame 6 . After its assembly is completed as figure 2 shown.

[0024] Such as figure 2 As shown, the gun barrel 1, the joint cover 2, and the casing 3 are fixed together and cannot move between each other, and the bolt 4, the opening and closing lock guide post 5, and the bolt frame 6 are moving parts.

[0025] Such as image 3 , Figure 4 As shown in the figure, to the left is the front, and to the right is the rear. The rear end surface of the joint sleeve 2 is provided with a pair of start-up protrusion...

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PUM

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Abstract

The invention discloses a pre-shell extraction mechanism for a straight-pull bolt type sporting rifle. The pre-shell extraction mechanism comprises a gun barrel, a joint sleeve, a cartridge receiver, a bolt, an unlocking and locking guide column, a bolt frame and other parts. A starting surface is designed on the joint sleeve, and a pre-shell extraction surface is designed on the bolt. When a shooter pulls the bolt frame backwards by hand and is about to unlock in place, the starting surface of the joint sleeve and the pre-shell extraction surface of the bolt are matched with each other, the rotation of the bolt is converted into backward movement by utilizing a lead angle, and the bolt is forced to pull a cartridge case to move backwards in a small range and tilt out of the cartridge case, so that the pre-shell extraction effect is achieved. The starting surface and the pre-shell extraction surface is closer to the central axis of the bolt than the unlocking and locking guide column, so that a lever effect can be formed, and the labor-saving effect is achieved.

Description

technical field [0001] The invention belongs to the field of firearms, in particular to a pre-extraction mechanism for a straight-pull action rifle. Background technique [0002] The straight pull bolt action rifle is a common form of manual rifle. Compared with the common rotary back-pull rifle, the straight-pull bolt-action rifle has no rotary operation, and the shooter only needs to push and pull the pull handle back and forth, which makes the operation faster and smoother. After shooting, the shell case of the firearm expands to a certain extent, and the expanded shell case will cling to the barrel chamber, forming a greater resistance to extraction. However, the traditional straight-pull bolt-action rifle cannot be designed with a pre-extraction mechanism, and there is a large resistance to extraction. When the shooter operates the firearm, he needs to yank the handle backwards and manually overcome the resistance of the shell extraction. The operation is laborious, t...

Claims

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Application Information

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IPC IPC(8): F41C27/00
CPCF41C27/00
Inventor 徐诚王洋袁瑞张俊斌
Owner NANJING UNIV OF SCI & TECH
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