Inertia percussion prevention mechanism
By designing grooves, projections and limiting surfaces in the anti-inertial firing mechanism of the firearm, the motion of the firing needle is limited, and the inertial firing problem is solved and the safety of use is improved.
Patent Information
- Application Number
- CN202420807125.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-18
AI Technical Summary
Most guns are prone to inertial firing when manually loading the first shot, causing injuries to the user's hands and affecting the safety of use.
An anti-inertial firing mechanism is designed. By setting grooves on the machine frame, front protrusions and rear protrusions on the firing needle, and an annular grooves and limiting surfaces are set on the machine head to limit the movement of the firing needle and prevent inertial firing.
It effectively prevents inertial firing, improves the safety performance of the automatic machine, and ensures the safety of the user's hands.
Smart Images
Figure CN222598650U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field, in particular to an anti-inertia firing mechanism. Background Art
[0002] Most firearms have the problem of premature firing, especially during the first manual reloading. If the automatic mechanism returns to its position and the hand has not left the bolt handle, if the inertia firing occurs at this time, the user's hand may be injured.
[0003] In order to ensure the safety of firearms and not affect their normal use, the problem of inertial firing must be solved. Therefore, the study of the problem of inertial firing is of great significance. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an anti-inertia firing mechanism, which can effectively prevent inertia firing and improve the safety performance of the automatic machine.
[0005] The purpose of the utility model is achieved in this way:
[0006] An anti-inertia firing mechanism comprises a machine frame, a machine head is sleeved in the machine frame, the machine head has a firing pin hole, a firing pin is installed in the firing pin hole of the machine head,
[0007] The firing pin is provided with a front protrusion and a rear protrusion, and a groove is provided in the frame along the longitudinal direction. The rear protrusion is arranged upward and embedded in the groove to form a circumferential limit for the firing pin.
[0008] An annular groove is provided around the firing pin hole in the nose, and the front protrusion is embedded in the annular groove. The front end face and the rear end face of the annular groove form a front limit face and a rear limit face for limiting the axial limit position of the firing pin. A V-shaped notch with the tip facing forward is provided on the side of the front limit face. The V-shaped notch has two notch slopes, and two V-shaped slopes are provided at the front end of the front protrusion corresponding to the two notch slopes.
[0009] When the automatic machine is in the unlocked state, the front protrusion is axially limited by the front limiting surface and the rear limiting surface, and during the automatic machine's return process, the rear protrusion of the firing pin is circumferentially limited by the groove;
[0010] When the automatic machine is in the locked state, the machine head rotates a certain angle relative to the machine frame and the firing pin, and the front limit surface allows the front protrusion of the firing pin to clear. At this time, the firing pin has no forward inertial energy and will not achieve inertial firing.
[0011] When the automatic machine is unlocked, the machine head rotates, and the notch slope of the V-shaped notch in the machine head cooperates with the V-shaped bevel of the front protrusion of the firing pin, driving the front protrusion of the firing pin to disengage from the V-shaped notch. Under the action of the front limit surface of the annular groove in the machine head, the front protrusion of the firing pin drives the firing pin to move backward, and the rear limit surface limits the rearward extreme position of the firing pin.
[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:
[0013] The utility model provides a groove on the machine frame and a front protrusion and a rear protrusion on the firing pin. When the firing pin and the machine head are installed and installed in the machine frame as a whole, the rear protrusion cooperates with the groove to limit the firing pin circumferentially and prevent the firing pin from rotating. An annular groove is provided on the machine head to limit the firing pin. The front limiting surface and the rear limiting surface of the annular groove limit the forward and backward moving distance of the firing pin to achieve axial limiting of the firing pin. A V-shaped notch is provided on the front limiting surface of the annular groove for the forward movement of the firing pin. When the automatic machine is unlocked, the inclined surface of the V-shaped notch of the machine head and the V-shaped inclined surface of the front protrusion of the firing pin cooperate to drive the firing pin to move backward. The rear limiting surface can effectively limit the backward movement distance of the firing pin. When the automatic machine is in a locked state, the movement speed of the automatic machine is zero, the firing pin has no forward movement inertia energy, inertial firing can be effectively prevented, and the safety performance of the automatic machine is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is an exploded view of the utility model;
[0015] Figure 2a This is the front view of the utility model in the unlocked state;
[0016] Figure 2b It is a top view of the utility model in the unlocked state;
[0017] Figure 3a This is the front view of the utility model in the locked state;
[0018] Figure 3b It is a top view of the utility model in a locked state;
[0019] Figure 4 This is a structural diagram of the functional area of the machine head of the utility model.
[0020] Reference numerals
[0021] In the attached drawings, 1-machine frame, 2-machine head, 3-firing pin;
[0022] 11- groove;
[0023] 21-annular groove, 22-front limiting surface, 23-rear limiting surface, 24-V-shaped notch, 25-notch inclined surface;
[0024] 31-front protrusion, 32-rear protrusion, 33-V-shaped slope. DETAILED DESCRIPTION
[0025] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.
[0026] In the present invention, the direction of firearm shooting is the front. Figures 1 to 4 A novel anti-inertia firing mechanism is shown, comprising a machine frame 1, a machine head 2 sleeved in the machine frame 1, and a firing pin 3. The firing pin 3 is installed in the firing pin hole of the machine head 2. A groove 11 is axially provided on the top of the center hole of the machine frame 1 for orienting the firing pin 3 after the machine head 1 is installed.
[0027] The firing pin 3 is inserted into the firing pin hole of the machine head 2. The machine head 2 is provided with an annular groove 21, and its front and rear end surfaces form a front limit surface 22 and a rear limit surface 23 for limiting the forward and rearward movement distance of the firing pin 3. The firing pin 3 is axially limited by limiting the front protrusion 31 of the firing pin 3; the front limit surface 22 of the annular groove 21 of the machine head 2 is also adjacent to a forward V-shaped notch 24 (a notch is vertically provided, the cross-section is V-shaped, and there are two vertical notch inclined surfaces 25), and a rear protrusion 32 is vertically provided at the rear of the firing pin 3. The firing pin 3 is also provided with a front protrusion 31 for front and rear limiting. The front protrusion 31 protrudes in a V shape toward the direction of the firing pin tip, and the V-shaped inclined surfaces 33 on both sides of the front protrusion 31 correspond to the notch inclined surfaces 25 on both sides of the front limit surface 22 of the annular groove 21 of the machine head. When the machine head 2 is unlocked and rotated, the notch inclined surfaces 25 of the machine head and the firing pin V-shaped The cooperation of the inclined surface 33 drives the firing pin 3 to move backward; when the firing pin 3 is installed in the firing pin hole of the machine head 2, the rear protrusion 32 of the firing pin is embedded in the groove 11, which limits the circumferential position of the firing pin 3; when the automatic machine is in an unlocked state, the front protrusion 31 of the firing pin 3 is located at the front limit surface 22 of the machine head 2, which limits the forward movement of the firing pin 3. During the return movement of the automatic machine, the rear protrusion 32 of the firing pin 3 is limited by the groove 11 of the machine frame 1 and cannot rotate with the machine head 2. When the automatic machine is in a locked state, the front limit surface 22 of the machine head 2 makes way for the front protrusion 31 of the firing pin. At this time, the firing pin 3 has no forward movement inertial energy and will not achieve inertial firing; when the automatic machine is unlocked, the machine head 2 rotates, driving the firing pin 3 to disengage from the V-shaped notch 24, and under the action of the limit surface of the annular groove 21 of the machine head on the front protrusion 31 of the firing pin 3, the firing pin 3 is driven to move backward.
[0028] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model 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 utility model.
Claims
1. An anti-inertia firing mechanism, comprising a machine frame, a machine head is sleeved in the machine frame, the machine head has a firing pin hole, and a firing pin is installed in the firing pin hole of the machine head, characterized in that: The firing pin is provided with a front protrusion and a rear protrusion, and a groove is provided in the frame along the longitudinal direction. The rear protrusion is arranged upward and embedded in the groove to form a circumferential limit for the firing pin. An annular groove is provided around the firing pin hole in the nose, and the front protrusion is embedded in the annular groove. The front end face and the rear end face of the annular groove form a front limit face and a rear limit face for limiting the axial limit position of the firing pin. A V-shaped notch with the tip facing forward is provided on the side of the front limit face. The V-shaped notch has two notch slopes. Two V-shaped slopes are provided at the front end of the front protrusion corresponding to the two notch slopes. The V-shaped slopes are used to cooperate with the V-shaped notch to drive the front protrusion of the firing pin to disengage from the V-shaped notch when unlocking. When the automatic machine is in the unlocked state, the front protrusion is axially limited by the front limiting surface and the rear limiting surface. When the automatic machine is in the recoil state, the rear protrusion of the firing pin is circumferentially limited by the groove. When the automatic machine is in the locked state, the front limit surface allows the front protrusion of the firing pin to clear. At this time, the firing pin has no forward inertial energy and inertial firing will not be achieved.