Two-fire implementation mechanism for percussion section of pistol

Abstract

The invention discloses a two-fire implementation mechanism for a percussion section of a pistol. The two-fire implementation mechanism mainly comprises a trigger, a pull rod, a driving hammer, a single-shot lever, a percussion lever, a sear, a safety device and other parts. The two-fire trigger alleviates the contradiction between shooting precision and safety, although the stroke of the two-fire trigger of the pistol is long, the trigger buckling force of the first half section is light, the trigger buckling force of the second half section is obviously increased, a clear firing prompt is given to a shooter, the stability of the pistol is kept, and the shooting precision of the shooter is improved.

Description

Technical Field

[0001] The invention relates to the technical field of firearms, in particular to a mechanism for realizing double-stage fire in a firing stage of a pistol. Background Art

[0002] A long pistol trigger stroke not only makes the feel bad, difficult to use, and slow to react, but it also makes it difficult for the shooter to accurately grasp the firing point, but it is safer; a short pistol trigger stroke makes the firing crisp and decisive, with less deformation of hand movements, which is conducive to precision shooting, and the pulling and resetting speeds are fast, but it is less safe. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a double-stage trigger mechanism for a pistol. The double-stage trigger alleviates the contradiction between shooting accuracy and safety. Although the double-stage trigger of the pistol has a long stroke, the trigger pull force is light in the first half stage, and the trigger pull force is significantly increased in the second half stage, which gives the shooter a clear firing prompt, is conducive to maintaining the stability of the pistol, and improves the shooter's shooting accuracy.

[0004] The object of the present invention is achieved in that:

[0005] A pistol firing stage double-fire realization mechanism, comprising a trigger, a pull rod, and a safety mounted on a firing base, a single-shot lever, a hammer, a firing lever, and a sear mounted on a safety shaft, and correspondingly provided with a hammer spring, a trigger spring, and a sear spring.

[0006] The front end of the pull rod is hingedly connected to the top of the trigger through a trigger pin, and a trigger torsion spring is sleeved on the trigger pin. The spring force of the trigger torsion spring makes the rear of the pull rod have a downward movement tendency, and the lower end of the pull rod is supported inside the pistol. The free end of the sear is provided with a sear tooth, and the fixed end of the hammer is provided with a hammer tooth. The hammer tooth corresponds to the sear tooth. The fixed end of the firing lever is provided with a firing lever tooth and a front positioning surface. The pull rod corresponds to the firing lever tooth of the firing lever. Under the action of the trigger pulling force, the front positioning surface of the firing lever can be positioned against the free end of the sear.

[0007] In the initial state, when the trigger is not pulled, the sear teeth of the sear and the sear teeth of the hammer are not fully engaged, and the pistol is in a cocked state; when the trigger is pulled, the trigger is acted upon by the trigger spring, and the trigger force is provided only by the trigger spring.

[0008] In the starting section, the trigger is pulled from the initial position, the trigger drives the pull rod forward, the tail end of the pull rod engages with the firing lever teeth, the pull rod drives the firing lever to rotate, the front positioning surface of the firing lever pushes the sear, the sear rotates and drives the hammer, gradually reaching the point where the sear teeth and the hammer teeth are fully engaged. In the trigger force starting section, the trigger force only needs to overcome the spring force of the trigger spring, and the trigger force is weak and stable.

[0009] In the stable firing stage, the trigger is pulled continuously, the pull rod drives the firing lever to rotate, the front positioning surface of the firing lever pushes the sear, and the sear rotates to gradually release the sear teeth from the hammer teeth. In the trigger force firing stage, the trigger force needs to overcome the spring force of the trigger spring, sear spring, and hammer spring, and the trigger force is small and stable.

[0010] In the abnormal triggering stage, if you continue to pull the trigger, there is a protrusion at the end point of the sear tooth, which will increase the moment of release between the sear tooth and the hammer tooth. In the abnormal trigger force pulling stage, the trigger force needs to overcome the spring force of the trigger spring, sear spring, and hammer spring, as well as the release force after the increased moment at the end point of the sear tooth and the hammer tooth. The trigger force has a more obvious sudden change and increase.

[0011] Preferably, in the trigger force starting section, the sleeve (the moving part on the pistol) presses down the single-shot lever, the single-shot lever presses down the pull rod, the tail end of the pull rod engages with the teeth of the firing lever (see the figure for details), the trigger drives the pull rod to move forward, the pull rod drives the firing lever to rotate, and the front positioning surface of the firing lever contacts the sear.

[0012] Preferably, the sear teeth and hammer teeth are ratchet teeth, which can increase the disengagement force.

[0013] Preferably, a protrusion is provided at the disengagement end point of the sear tooth, and the shape of the hammer tooth corresponds to that of the sear tooth. The sear tooth protrusion increases the disengagement force between the sear tooth and the hammer tooth.

[0014] Preferably, pulling the trigger drives the pull rod and the firing lever to rotate and disengage the sear, thereby releasing the hammer, and the hammer rotates to strike the pin; after firing, the slide recoils and presses down the single-shot lever, and the single-shot lever presses down the firing lever; after releasing the trigger, the pull rod begins to reset under the action of the trigger spring until the pull rod and the firing lever are re-engaged, and the firing lever rotates to make way, allowing the pull rod to be completely reset.

[0015] Due to the adoption of the above technical solution, the present invention is based on the structure of the pistol, and by adjusting the geometric shapes of the hammer, sear and other parts, two different torques are formed in the "starting" and "pulling" sections. A protrusion is added to the sear teeth, and the hammer is contacted and squeezed in the second half of the trigger stroke to generate additional trigger pull force. In this way, the original stroke of the pistol is not changed, and the trigger pull force of the two-stage fire can be accurately controlled. The sear releases the hammer more crisply, and the feel of the two-stage fire is obvious. There are several core innovative features:

[0016] (1) Compared with automatic pistols, the required space is small. It only needs to add a protrusion in front of the sear tooth to cooperate with the firing mechanism to realize the two-stage triggering. The trigger force has a cyclical feel of increasing step jumps, stable growth, and decreasing jumps. The reciprocating is reliable, the feel is obvious, and the controllability is strong. The solution idea can be implemented in most trigger rotary firearms, giving the shooter a clear firing prompt, which is conducive to maintaining the stability of the pistol and improving the shooting accuracy of the user.

[0017] (2) A mechanism for achieving double-stage firing of a pistol can achieve a two-stage firing when the trigger is pulled, and the trigger force jumps in steps and increases steadily. The finger contacts the trigger and pulls it slowly backward. First, the trigger transmits a stable rotational torque. When the initial point of interaction between the trigger and the mechanism is reached, the trigger force instantly jumps in steps and increases. At this time, the user can experience the interaction between the trigger and the "trigger rod, firing lever, sear and hammer" inside the firearm. Continue to pull the trigger, and the trigger force increases steadily and continuously. When it reaches the release limit, the trigger is released and the trigger force returns to near the initial level. This innovative feature can effectively improve the feel of the pistol's double-stage firing.

[0018] (3) A mechanism for realizing the double-stage fire of a pistol firing section can achieve a similar double-stage fire feel by fine-tuning some of the external dimensions of the mechanism components according to the trigger rotation angle and action size of different firearms. Moreover, for the same firearm, different double-stage fire feels can be achieved by fine-tuning the dimensions. The mechanism has strong applicability and can be adapted to almost all firearms that fire by trigger rotation. This innovative feature can greatly reduce the difficulty of realizing the double-stage fire feel of various types of firearms.

[0019] (4) A simple and reliable mechanism for realizing the double-stage fire of a pistol firing section. The mechanism, including the trigger itself and the standard parts used, is assembled from a total of 7 parts, the main parts being the trigger, the pull rod, the hammer, the single-shot lever, the firing lever, the sear, the safety and other parts. The mechanism has a simple structure and reliable movement. This innovative feature is an effective way to improve the reliability of the mechanism.

[0020] The advantages and beneficial effects of the present invention are as follows: ① The small installation space required enables designers to arrange the internal layout of the firearm more flexibly. ② It provides a two-stage trigger pull, which is beneficial to maintaining the stability of the pistol and improving the shooting accuracy of the user. ③ The structure has extremely high adaptability and can be easily transplanted to various types of trigger rotary firearms, and can be widely adopted. ④ The structure is simple and highly reliable. Related problems caused by structural failure can be greatly avoided during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the position structure of the trigger force "starting section" of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the trigger force "firing section" position of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the pistol of the present invention after firing.

[0025] Figure 5 It is a schematic diagram of the buckling structure of the pull rod and the firing lever of the present invention.

[0026] Reference numerals

[0027] In the attached figure, 1: trigger; 2: pull rod; 3: safety; 4: firing lever; 5: hammer; 6: single-shot lever; 7: sear. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0029] A double-stage fire realization mechanism for a pistol firing stage comprises seven parts including a trigger, a pull rod, a hammer, a single-shot lever, a firing lever, a sear, a safety and other parts.

[0030] The trigger and the pull rod are connected by a trigger pin, and a trigger torsion spring is sleeved on the trigger pin. The spring force makes the trigger pull rod always have a downward trend, so that it is closely attached to the lower mechanism. When the trigger is pulled, the trigger pushes the pull rod forward.

[0031] The firing mechanism is fixed on the firing base, and the hammer, single-shot lever, and firing lever are all installed on the shaft of the safety. When the gun is in the ready-to-fire state, the sear teeth and the hammer sear teeth have not yet engaged. Pull the trigger, the trigger drives the pull rod to move forward, the sleeve presses down the single-shot lever, the single-shot lever presses down the pull rod, the tail of the pull rod engages with the firing lever teeth, the pull rod drives the firing lever to move, the firing lever rotates along the safety axis, the front positioning surface of the firing lever pushes the sear, the sear rotates along the sear axis until the sear releases the hammer, the hammer hits the firing pin, and the gun is in the firing state, such as Figure 4 shown.

[0032] In the trigger force starting stage, the sleeve presses down the single-shot lever 6, the single-shot lever presses down the pull rod 2, and the tail end of the pull rod engages with the firing lever teeth, see Figure 5 , the trigger drives the pull rod to move forward, the pull rod drives the firing lever to rotate, and the front positioning surface of the firing lever contacts the sear 7.

[0033] In the initial state, the gun is in the ready-to-fire state. Figure 2 As shown. The trigger is acted upon by the trigger spring. When the trigger is pulled, the trigger spring provides a reverse rotation torque, and the force is weak and stable. Starting from the starting position, the trigger gradually reaches the point where the sear teeth and the hammer sear teeth are fully engaged. If the trigger is pulled continuously, the trigger drives the firing lever to move, and the front positioning surface of the firing lever pushes the sear. This stage is the "starting" stage, and the trigger pull force is weak and stable at this stage.

[0034] The trigger force increases steadily and continuously, and when it reaches the "firing" position, there is a small protrusion at the end of the sear tooth, and the resistance to releasing the hammer at the end of the firing increases. When the sear rotates to the firing point, the finger will obviously feel the increase in trigger pull force until the sear releases the hammer. This stage is the "abnormal triggering" stage. During this stage, the trigger pull force suddenly jumps and decreases, and the "sealer" releases the "hammer" with a momentary feel. Finally, the trigger force returns to near the initial level, realizing a step jump in the trigger force.

[0035] When the trigger is pulled, it is a two-stage pull. The two-stage fire can give the shooter a clear firing prompt, which is conducive to maintaining the stability of the pistol and improving the shooting accuracy of the user. The user's finger touches the trigger and pulls it slowly backward. In the initial stage, the trigger transmits a stable rotation torque, and the force value increases slightly and remains almost unchanged; when the initial point of the trigger and the mechanism is reached, the trigger force instantly realizes a step-by-step jump increase. At this time, the user can understand the stroke position of the trigger firing according to the feel transmitted by the trigger, and the action of the trigger and the pistol "the trigger rod drives the firing lever, the firing lever pushes the sear, and the sear rotates the hammer until the hammer is released". The user continues to pull the trigger, and the trigger force increases steadily and continuously. When it reaches the "firing" position, the trigger force instantly jumps and decreases, and the "sealer" part in the pistol releases the "hammer" with an instantaneous feel, and finally the trigger force returns to near the initial level. This innovative feature, when the trigger is pulled, it is a two-stage pull, which gives the shooter a clear firing prompt, which is conducive to maintaining the stability of the pistol when firing, and can effectively improve the shooting accuracy of the user.

[0036] The relevant mechanical action mode of this mechanism is not limited to a small range of applications, and the adjustable range is extremely large. Using this idea and basic structural action mode, the external dimensions of the parts can be changed accordingly according to the trigger rotation angle and action size of different firearms, and the double-fire feel of similar feedback cycles can be achieved. For the same firearm, by fine-tuning the size and structure, it can be upgraded to an adjustable double-fire feel, allowing users to more flexibly adjust their own feeling. The mechanism has strong applicability and can be adapted to almost all firearms that fire by trigger rotation. This innovative feature can greatly reduce the difficulty of achieving the double-fire feel of various types of firearms.

[0037] 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 pistol firing stage double-fire realization mechanism, comprising a firing base and a safety shaft, wherein a trigger, a pull rod and a safety are mounted on the firing base, a single-shot lever, a hammer, a firing lever and a sear are mounted on the safety shaft, and a hammer spring, a trigger spring and a sear spring are provided corresponding to the hammer, the trigger and the sear, and the characteristics are as follows: The top of the trigger is hinged to the front end of the pull rod through a trigger pin, and a trigger torsion spring is sleeved on the trigger pin. The spring force of the trigger torsion spring makes the rear of the pull rod have a downward movement tendency, and the lower end of the pull rod is supported inside the pistol. The free end of the sear is provided with a sear tooth, and the fixed end of the hammer is provided with a hammer tooth. The hammer tooth corresponds to the sear tooth. A protrusion is provided at the release end point of the sear tooth. The sear tooth protrusion will increase the separation force between the sear tooth and the hammer tooth. The fixed end of the firing lever is provided with a firing lever tooth and a front positioning surface, and the pull rod corresponds to the firing lever tooth of the firing lever. In the initial state, when the trigger is not pulled, the sear teeth of the sear and the sear teeth of the hammer are not fully engaged, and the pistol is in a cocked state; In the trigger force starting stage, the trigger is pulled from the initial position, the trigger drives the pull rod forward, the rear end of the pull rod engages with the firing lever teeth, the pull rod drives the firing lever to rotate, the front positioning surface of the firing lever pushes the sear, the sear rotates and drives the hammer, gradually reaching the point where the sear teeth and the hammer teeth are fully engaged, and the trigger force only needs to overcome the spring force of the trigger spring; The trigger force is in the stable firing section. If the trigger is pulled continuously, the pull rod drives the firing lever to rotate. The front positioning surface of the firing lever pushes the sear, which rotates and gradually disengages the sear teeth from the hammer teeth. The trigger force is relative to the stable firing section of the trigger force, increasing the spring force of the sear spring and the hammer spring. The trigger force triggers the abnormal movement section, and the trigger continues to be pulled. The protrusion on the sear tooth increases the torque when the sear tooth and the hammer tooth are released. The trigger force is relative to the stable section of the trigger force, which increases the release force after the torque at the end point position of the sear tooth and the hammer tooth is increased.

2. A pistol firing stage two-stage fire realization mechanism according to claim 1, characterized in that: The sear teeth and hammer teeth are ratchet teeth, which can increase the disengagement force.

3. A pistol firing stage two-stage fire realization mechanism according to claim 1, characterized in that: The shape of the hammer tooth corresponds to the sear tooth.

4. A pistol firing stage two-stage fire realization mechanism according to claim 1, characterized in that: After the sear tooth and the hammer tooth are disengaged, the hammer is released and the firing is completed; afterwards, the pistol slide recoils and presses down the single-shot lever, and the single-shot lever presses down the firing lever; after releasing the trigger, the pull rod begins to reset under the action of the trigger spring until the pull rod and the firing lever are re-engaged, and the firing lever rotates to make way, allowing the pull rod to be completely reset.

Images