A firing pin positioning and limiting structure assembled on a machine frame

Abstract

The present invention discloses a positioning and limiting structure for a firing pin pin assembled on a machine frame, comprising a machine frame, a machine head component, a firing pin and a firing pin pin, wherein the firing pin comprises a rod portion and a positioning disc, an accommodating portion is provided at the upper middle end of the machine frame for accommodating the firing pin pin, a limiting groove is provided at the front end of the accommodating portion, a first step hole and a through hole are provided at the middle portion, both of which are arranged outside the limiting groove, a positioning clamping column and a positioning clamping column spring are installed in the first step hole, the positioning clamping column is arranged above the positioning clamping column spring and can move up and down, and a positioning clamping column is provided in the middle of the machine frame. There is a pin hole for installing the positioning column pin to limit the up and down movement of the positioning column. The firing pin pin includes a rod and a head. The rod is placed in the through hole of the machine frame, and the head is provided with a limiting hole. The upper part of the positioning column is clamped in the limiting hole to limit the rotation of the firing pin in the machine frame. After the firing pin is installed in the machine frame, its head is clamped in the limiting groove to limit the up and down movement of the firing pin. When the bolt is in the unlocked / locked state, the firing pin pin rod is always behind the firing pin positioning disc to limit the axial position of the firing pin.

Description

Technical Field

[0001] The present invention relates to the technical field of firearms, and in particular to a firing pin positioning and limiting structure assembled on a machine frame. Background Art

[0002] Foreign AR series rifles such as M16 and M4 all use a laterally mounted elastic cotter pin structure to limit the firing pin. The firing pin pin is mounted on the frame. Its advantages are simple structure, small size, and no risk of premature firing. However, it is only suitable for the structure where the firing pin pin does not separate from the limiting surface of the receiver during the recoil process. There is a risk of the elastic cotter pin falling off during use. Foreign AK series and domestic 56 series, 81-style rifle series, and 95 / 95-1-style squad gun family all use a fixed pin or elastic pin to limit the firing pin. The firing pin pin is mounted on the machine head. Its advantages are simple structure and small size, but poor maintenance and inconvenient maintenance and wiping. There is a risk of premature firing. The number of times of assembly and disassembly will reduce the interference of the fixed pin or plastic deformation of the elastic pin. The reduction of elastic interference will bring the risk of the fixed pin type firing pin pin or the elastic pin type firing pin pin jumping out of the machine head during operation, causing the machine head to get stuck. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the prior art and to provide a firing pin positioning and limiting structure assembled on a bolt frame, which can prevent the problem of "premature firing" during the locking process of the bolt, and has good maintainability and convenient maintainability and wiping. The firing pin can be assembled in the bolt frame without any restrictions on the front and rear position of the receiver.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A positioning and limiting structure for a firing pin pin mounted on a machine frame comprises a machine frame, a machine head component mounted in a central cavity of the machine frame, a firing pin and a firing pin pin mounted on the machine frame, the firing pin comprising a rod and a positioning disc, the rod being mounted in the machine head component, the positioning disc being placed behind the machine head component, an accommodating portion being provided at the middle upper end of the machine frame for accommodating the firing pin pin, a limiting groove being provided at the front end of the accommodating portion, a first step hole and a through hole being vertically provided at the middle portion, the first step hole and the through hole being arranged outside the limiting groove, a positioning column and a positioning column spring being installed in the first step hole, the positioning column being placed above the positioning column spring and being able to move upward The firing pin pin is arranged at a position corresponding to the positioning column in the middle of the machine frame and is used to install the positioning column pin to limit the upward and downward movement of the positioning column. The firing pin pin comprises a rod portion and a head portion. The firing pin pin rod portion is placed in the through hole of the machine frame, and the firing pin pin head portion is provided with a limiting hole. The upper portion of the positioning column is clamped in the limiting hole to limit the rotation of the firing pin in the machine frame. After the firing pin pin is installed in the machine frame, its head portion is clamped in the limiting groove to limit the upward and downward movement of the firing pin and prevent the firing pin from jumping out of the machine frame. When the bolt is in the unlocked / locked state, the firing pin pin rod portion is always behind the firing pin positioning disc to limit the axial position of the firing pin.

[0006] Preferably, the top surface of the firing pin pin head is lower than the top surface of the firing pin pin rod, so that the firing pin can be easily inserted into the limiting groove of the machine frame during installation, and the limiting hole of the firing pin pin head is a waist-shaped limiting hole.

[0007] Preferably, the positioning column is a stepped shaft, and a groove is provided on the axial side of the large diameter shaft for inserting the positioning column pin so that the positioning column moves up and down within the limited range of the groove. The small diameter shaft is the positioning column head, which is tightly matched with the limiting hole of the firing pin pin head.

[0008] Preferably, the firing pin is located between the second step hole of the frame and the firing pin pin when the bolt is in an unlocked state, and is located between the head component and the firing pin pin when the bolt is in a locked state.

[0009] Beneficial effects of the present invention:

[0010] 1. The firing pin pin is designed to be an integrally formed rod and head, a housing is provided in the middle of the frame to place the firing pin, a limiting groove is provided at the front end of the housing, a stepped hole and a through hole are provided in the middle, and a positioning column, a positioning column spring and the firing pin rod are installed respectively. After the firing pin pin is installed, its head is stuck in the limiting groove, and the rotation of the firing pin is limited by the positioning column, forming an up and down movement and rotation limit for the firing pin, and the rod is always behind the firing pin positioning disc, which limits the axial position of the firing pin and ensures that the firing pin does not fall out of the frame during the opening / locking process of the bolt.

[0011] 2. There is no risk of "premature ignition", it is easy to maintain and maintain, and it is easy to wipe. The firing pin does not require any restrictions on the front and rear position of the receiver when it is assembled in the frame, and there is no risk of it falling off.

[0012] 3. It has good ergonomics, does not occupy the outer dimensions of the machine head, and does not increase the volume of the gun locking part.

[0013] 4. High positioning reliability, long service life, simple structure and good serviceability.

[0014] 5. It can be widely used in similar weapon designs and has good portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 A top view of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the machine frame;

[0018] Figure 4 This is the main view of the machine frame;

[0019] Figure 5 A top view of the machine frame;

[0020] Figure 6 It is a structural schematic diagram of the firing pin;

[0021] Figure 7 is a front view of the firing pin;

[0022] Figure 8 It is a left side view of the firing pin;

[0023] Fig. 9 It is a schematic diagram of the structure of the firing pin;

[0024] Fig.10 It is a structural schematic diagram of the positioning column.

[0025] Reference numerals

[0026] 1. Machine frame; 2. Machine head parts; 3. Firing pin; 4. Firing pin; 5. Positioning clamp spring; 6. Positioning clamp pin; 7. Positioning clamp;

[0027] 101, accommodating portion; 102, through hole; 103, limiting groove; 104, first step hole; 105, pin hole; 106, second step hole;

[0028] 301, firing pin head; 302, limiting hole; 303, firing pin rod;

[0029] 401, firing pin rod; 402, firing pin positioning disc;

[0030] 701, groove; 702, positioning column head. DETAILED DESCRIPTION

[0031] The working principle and structure of the present invention are further described in detail below in conjunction with the embodiments and drawings.

[0032] like Figures 1 to 10 As shown, a firing pin positioning and limiting structure assembled on a machine frame comprises a machine frame 1, a machine head component 2 mounted in a central cavity of the machine frame 1, a firing pin 4 and a firing pin 3 mounted on the machine frame, wherein the firing pin 4 comprises a rod portion 401 and a positioning disc 402, the rod portion 401 being assembled in the machine head component 2, the positioning disc 402 being disposed behind the machine head component 2, an accommodating portion 101 being provided at the middle upper end of the machine frame 1 for accommodating the firing pin 3, a limiting groove 103 being provided at the front end of the accommodating portion 101, a first step hole 104 and a through hole 105 being vertically provided at the middle portion, the first step hole 104 and the through hole 105 being disposed outside the limiting groove 103, a positioning column 7 and a positioning column spring 5 being installed in the first step hole 104, the positioning column 7 being disposed on the positioning column spring 5 The firing pin 3 comprises a rod portion 303 and a head portion 301. The firing pin rod portion 303 is placed in the through hole 102 of the machine frame, and the firing pin head portion 301 is provided with a limiting hole 302. The upper portion of the positioning column 7 is clamped in the limiting hole 302 to limit the rotation of the firing pin 3 in the machine frame 1. After the firing pin 3 is installed in the machine frame 1, its head portion 301 is clamped in the limiting groove 103 to limit the up and down movement of the firing pin pin and prevent the firing pin 3 from escaping from the machine frame 1. When the bolt is in the unlocked / locked state, the firing pin pin rod portion 303 is always behind the firing pin positioning disk 402 to limit the axial position of the firing pin 4.

[0033] like Figure 6-Figure 8 As shown, in this embodiment, the top surface of the firing pin head 301 is lower than the top surface of the firing pin rod 303, which makes it easier for the firing pin 3 to be inserted into the limiting groove 103 of the machine frame during installation, and the limiting hole 302 of the firing pin head is a waist-shaped limiting hole.

[0034] like Fig.10 As shown, in this embodiment, the positioning column 7 is a stepped shaft, and a groove 701 is provided on the axial side of the large diameter shaft, which is used to insert the positioning column pin 6 so that the positioning column 7 can move up and down within the limited range of the groove 701. The small diameter shaft is the positioning column head, which is tightly matched with the limiting hole 302 of the firing pin pin head.

[0035] like Fig. 9 As shown, the firing pin 4 is located between the second step hole 106 of the frame and the firing pin 3 when the bolt is in the unlocked state, and is located between the head component 2 and the firing pin 3 when the bolt is in the locked state.

[0036] Working process of the present invention:

[0037] During assembly, install the machine head component into the machine frame and put it in the unlocked state, install the firing pin into the machine head component and put it at the front, install the rod of the firing pin pin into the through hole on the machine frame, press down the head of the positioning column with the head of the firing pin pin, and rotate the head of the firing pin pin into the limit groove on the machine frame. When the head of the positioning column falls into the anti-rotation limit hole on the head of the firing pin pin, the assembly is completed.

[0038] When disassembling, use a punch to press down the head of the positioning column and rotate it outward. When the head of the firing pin leaves the limiting groove on the frame, remove the firing pin and then remove the firing pin, bolt head components and other parts to complete the disassembly of the bolt.

[0039] The present invention can achieve no risk of "premature firing" during the locking process of the bolt, has good maintainability, is convenient to wipe, does not require the front and rear position restrictions of the receiver body when the firing pin is assembled on the frame body, and has no risk of jumping out or falling off, thereby ensuring the safety of the bolt.

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A firing pin positioning and limiting structure assembled on a machine frame, comprising a machine frame, a machine head component mounted in a central cavity of the machine frame, a firing pin and a firing pin mounted on the machine frame, wherein the firing pin comprises a rod and a positioning disc, the rod being assembled in the machine head component, and the positioning disc being placed behind the machine head component, characterized in that: The locking cam is provided at the locking cam portion so as to lock the locking cam portion in the locking cam portion and to lock the locking cam portion in the locking cam portion. The top surface of the firing pin head is lower than the top surface of the firing pin rod, so that the firing pin can be easily inserted into the limiting groove of the machine frame when installed, and the limiting hole of the firing pin head is a waist-shaped limiting hole; The positioning column is a stepped shaft, and a groove is provided on the axial side of the large diameter shaft for inserting the positioning column pin so that the positioning column can move up and down within the limited range of the groove. The small diameter shaft is the positioning column head, which is tightly matched with the limiting hole of the firing pin pin head.

2. A firing pin positioning and limiting structure assembled on a machine frame according to claim 1, characterized in that: The firing pin is located between the second step hole of the frame and the firing pin pin when the bolt is in an unlocked state, and is located between the head component and the firing pin pin when the bolt is in a locked state.

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