Adjusting mechanism for trigger force of firearm launcher

Abstract

The invention discloses an adjusting mechanism for the trigger force of a firearm launcher, which can simply and quickly adjust the trigger force of a sniper rifle on the premise of not needing tools and disassembling any parts of a firearm. Comprising a grip (5), a sear seat (16) is mounted at the upper end of the grip (5), a sear (7) is longitudinally matched in the sear seat (16) in a sliding manner, a trigger (6) is hinged to the sear seat (16), a short arm of the trigger (6) is clamped with the sear (7), a threaded connector is arranged at the rear end of the sear seat (16), a sear spring (15) and a gasket (14) are sleeved on the threaded connector, and an adjusting screw (19) is matched with the end of the threaded connector in a threaded manner. The front end face of the adjusting screw rod (19) abuts against the gasket (14), the two ends of the sear spring (15) act on the tail end of the sear seat (16) respectively, when the gasket (14) and the sear seat (16) move forwards, the sear spring (15) provides trigger force, and the compression amount of the sear spring (15) is adjusted through the adjusting screw rod (19).

Description

Technical Field

[0001] The invention relates to the technical field of firearms, and in particular to a trigger force regulating mechanism for a firearm transmitter. Background Art

[0002] In conventional firearms, the trigger is an important part used by the shooter to control the firing of ammunition when the shooter operates the firearm. The size of the trigger force not only affects the shooter's operating experience, but also affects the reliability, life, accuracy and other performance of the firearm. For sniper rifle combat, the size of the trigger force has a greater impact on shooting accuracy. Especially when the sniper rifle is shooting at a long distance, because the trigger force does not match the shooter's operation, the sniper rifle will be disturbed when the trigger is pulled, thereby changing the direction of the projectile out of the barrel, causing the point of impact to be far away from the aiming point. At the same time, the shaking of the sniper rifle is reflected in the sight, and the shooter observes that the sight scale and the aiming point are always shaking and misaligned, resulting in a feeling of "missing aiming", which increases the shooter's psychological pressure and leads to poor shooting status.

[0003] Large-caliber sniper rifles are mainly used for long-range precision sniping missions within 2,000 meters. The target is small and the shooting accuracy is extremely high. The shooter must control every link of the shooting process and eliminate factors such as breathing, heartbeat, and muscle tension. A slight tremor during shooting may cause the bullet point to deviate by several centimeters, which means missing the precise sniping target.

[0004] Pulling the trigger is an important part of sniper rifle shooting. When using a sniper rifle in combat, the shooter usually pulls the trigger slowly and continuously to ensure that the aiming remains unchanged during the trigger pulling process, the sear moves smoothly, and the entire gun body is stable. The size of the trigger force varies from person to person and according to the shooting environment. Different physical fitness, psychological quality and shooting habits require different trigger forces; different environments such as high temperature, low temperature, wind and sand require different trigger forces. When the trigger force is too large, the shooter's muscles are too tense during the trigger pulling process, making the shooter have the illusion that he wants to fire but does not fire, causing the attention to be diverted, the muscles to tense and shake, and the sniper rifle to shake before the bullet is ejected; if the trigger force is too small, the heartbeat and action are out of sync, and the trigger moves too quickly, causing the sniper rifle to fire during the correction of the aiming point, that is, the sniper rifle has fired without aiming at the target.

[0005] At present, the technology for adjusting the trigger force of firearms has not been well utilized. Most of them are non-adjustable, fixed within a certain range or a fixed value before leaving the factory, and can only be adjusted with the help of tools or by disassembling the firearm parts. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a trigger force adjustment mechanism for a firearm transmitter. The present invention can simply and quickly adjust the trigger force of a sniper rifle without the need for tools or disassembly of any parts of the firearm.

[0007] The object of the present invention is achieved in that:

[0008] A trigger force adjustment mechanism for a firearm firing machine comprises a grip (5), a sear seat (16) is mounted on the upper end of the grip (5), a sear (7) is slidably matched with the sear seat (16) along the longitudinal direction, a trigger (6) is hingedly connected to the sear seat (16), the trigger (6) has a short arm and a long arm, the short arm of the trigger (6) is engaged with the sear (7), when the long arm of the trigger is pulled, the short arm of the trigger (6) drives the sear (7) to move forward,

[0009] The rear end of the sear seat (16) is provided with a threaded connector, on which a sear spring (15) and a gasket (14) are sleeved, and the end of the threaded connector is threadedly matched with an adjusting screw (19), the front end surface of the adjusting screw (19) is in contact with the gasket (14), and the two ends of the sear spring (15) act on the rear end of the sear seat (16) and the gasket (14) respectively, and the sear spring (15) is in a compressed state. When the sear seat (16) moves forward, the sear spring (15) provides a trigger force, and the compression amount of the sear spring (15) is adjusted by the adjusting screw (19), thereby adjusting the trigger force.

[0010] Preferably, a limit gear (9) is installed on the adjusting screw (19), and the adjusting screw (19) can drive the limit gear (9) to rotate. A lock pin (4) is arranged on the handle (5) in the horizontal direction, and a pressing head is arranged at one end of the lock pin (4), and a lock (11) is arranged at the other end of the lock pin (4). The lock (11) is provided with a latching tooth, and a lock spring (12) is sleeved on the lock pin (4). The two ends of the lock spring (12) act on the pressing head and the handle (5) respectively. Under the spring force of the lock spring (12), the latching tooth on the lock (11) is engaged with the limit gear (9), so as to form circumferential positioning of the limit gear (9) and the adjusting screw (19). When the pressing head is pressed, the latching tooth on the lock (11) is disengaged from the limit gear (9), and the limit gear (9) and the adjusting screw (19) can rotate, thereby adjusting the trigger force.

[0011] Preferably, the limiting gear (9) and the adjusting screw (19) are connected via an elastic cylindrical pin (13).

[0012] Preferably, the rear end of the adjusting screw (19) extends out of the handle (5).

[0013] Preferably, the lock pin (4) is threadedly connected to the lock (11), the pressing head of the lock pin (4) is square, and a corresponding clearance notch is provided on the handle (5). When the pressing head is pressed, the pressing head of the lock pin (4) can be completely immersed in the clearance notch, so that the handle (5) can be installed in the receiver (1).

[0014] Preferably, a pressing head corresponding to the locking pin (4) on the casing (1) is provided with a clearance notch. When the transmitter (3) is loaded into the casing (1), the pressing head cooperates with the clearance notch on the casing (1) to limit the rotation of the locking pin (4).

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0016] The present invention can simply and quickly adjust the trigger force of a sniper rifle without the need for tools or disassembling any parts of the firearm, can be adjusted in real time according to different shooters or shooting environments, and can ensure that the shooter pulls the trigger with appropriate force, thereby ensuring that the shooting accuracy of the sniper rifle is precise and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the installation structure of the firearm transmitter.

[0018] Figure 2 It is a schematic diagram of the structure of a firearm transmitter;

[0019] Figure 3 It is a plan view of the structure of a firearm launcher;

[0020] Figure 4 It is a schematic diagram of the trigger force adjustment structure of a firearm transmitter;

[0021] Figure 5 It is a schematic diagram of the resistance iron structure;

[0022] Figure 6 Schematic diagram of the adjusting screw structure;

[0023] Figure 7 It is a schematic diagram of the structure of the iron block;

[0024] Figure 8 2. It is a schematic diagram of the locking pin structure;

[0025] Fig. 9 It is a schematic diagram of the lock structure;

[0026] Fig.10 It is a schematic diagram of the limit gear structure.

[0027] Reference numerals

[0028] In the attached drawings, 1-receiver, 2-safety, 3-transmitter (including trigger, sear and other launch-related components), 4-locking pin, 5-grip, 6-trigger, 7-sealer, 8-hammer, 9-limiting gear, 10-adjusting screw, 11-lock, 12-locking spring, 13-elastic pin, 14-gasket, 15-sealer spring, 16-sealer seat. DETAILED DESCRIPTION

[0029] A trigger force adjustment mechanism for a firearm launcher, the adjustment mechanism of the invention comprises a lock pin 4, a grip 5, a trigger 6, a sear 7, a limit gear 9, an adjustment screw 10, a lock 11, a lock spring 12, an elastic cylindrical pin 13, a gasket 14, a sear spring 15, and a sear seat 16.

[0030] The trigger force is mainly composed of the spring force of the sear spring 15 and the friction force generated by the movement of the sear 7. The trigger works on the principle of a lever. The spring force and the friction force are transmitted to the short arm end of the trigger 6 through the sear 7, and then transmitted to the shooter's finger through the long arm of the trigger. The change in the trigger force is mainly the change in the spring force generated by compressing the sear spring 15. The trigger force is controlled by adjusting the compression of the sear spring 15. The greater the compression of the sear spring 15, the greater the spring tension generated, that is, the greater the trigger force. The friction force generated by the movement of the sear 7 generally changes very little and cannot be adjusted, and is defaulted to a small fixed value. The adjusting screw 10 and the lock buckle 11 of the present invention can adjust the compression of the sear spring 15.

[0031] The sear spring 15 is squeezed by the adjusting screw 10 and the sear seat 16 to form a certain pre-compression amount and a certain tension. The adjusting screw 10 is manually rotated to adjust the compression amount of the sear spring 15. When the trigger is pulled, the sear 7 moves forward, the compression amount increases by Xmm (i.e., the length of the engagement surface between the hammer 8 and the sear 7), and the tension also increases. At the same time, after shooting, the trigger 6 is released, and the tension of the sear spring 15 drives the sear 7 to move backward, and the trigger 6 is reset.

[0032] The adjusting screw 10 includes an inner hole thread, an anti-skid knurling pattern, and a U-shaped groove. The thread is connected to the sear 7. The anti-skid knurling pattern is the position for the finger to rotate the adjusting screw 10 to prevent slipping during rotation. The U-shaped groove limits the radial rotation of the limit gear; limits the axial movement of the limit gear 9, and the maximum limit position of the axial movement can ensure that the limit gear 9 will not be separated from the lock 11. The limit gear 9 is inserted into the adjusting screw 10 and is fixed by the elastic cylindrical pin 13 inserted into the U-shaped groove. The outer teeth of the limit gear 9 are meshed with the teeth of the lock 11 to ensure that the adjusting screw 10 and the limit gear 9 will not rotate radially, and the compression amount of the sear spring 15 after adjustment is limited to be fixed; it ensures that the adjusting screw 10 can move axially in the limit gear 9. When the trigger 6 is pulled, the adjusting screw 10 can move forward with the sear 7. Under the tension of the lock spring 12, the teeth of the lock 11 always remain meshed with the teeth of the limit gear 9 to prevent the limit gear 9 and the adjusting screw 10 from rotating. When the trigger force needs to be adjusted, the lock pin 4 can be pressed to drive the lock 11 to separate from the limit gear 9, and the adjusting screw 10 can be rotated manually. The lock 11 is connected to the lock pin 4 by a thread. The lock pin 4 is a square structure. When the transmitter 3 is installed in the receiver 1, the lock pin 4 needs to be pressed. After the transmitter 3 is installed in the receiver 1, the lock pin 4 is ensured to pop out. The square groove restricts the rotation of the lock pin 4, thereby ensuring that the lock 3 and the lock pin 4 will not fall off due to loose threads.

[0033] In this embodiment, the limit gear 9 is inserted into the adjusting screw 10 and is fixed by the elastic cylindrical pin 13 inserted into the U-shaped groove (or strip groove), that is, after the limit gear 9 is locked, when the trigger 6 is pulled, the adjusting screw 10 can move axially in the limit gear 9. If the adjusting screw 10 does not move in the limit gear 9, the limit gear 9 will move with the adjusting screw 10, which will increase the trigger force. Axial movement means that there is a gap between the adjusting screw 10 and the limit gear 9, and the adjusting screw 10 can move in the limit gear 9.

[0034] When assembling the transmitter 3, the sear 16, sear 7, hammer 8, and trigger 6 must be assembled before they can be installed into the grip 5. Secondly, install the limit gear 9 into the adjusting screw 10 and fix it with the elastic cylindrical pin 13. Then, insert the fixed limit gear 9 and the adjusting screw 10 as a whole from the tail hole of the grip 5 and connect them with the sear 7 by threaded rotation. Finally, install the lock 11, lock spring 12, and lock pin 4 into the grip 5 in turn. Tighten the lock pin 4 clockwise until it cannot rotate and can be pressed into the gap in the grip 5. Press down the lock pin 4, install the transmitter 3 into the receiver 1, and make the lock pin 4 pop out. At the same time, insert the safety 2 into the receiver 1 and the transmitter 3, and the transmitter 3 is installed.

[0035] Before loading the firearm with ammunition, when the trigger force of the transmitter 3 needs to be adjusted, the lock pin 4 is pressed, the lock 11 is disengaged from the limit gear 9, the limit gear 9 and the adjusting screw 10 are no longer restricted by the lock 11, and the adjusting screw 10 can be rotated freely. Clockwise rotation compresses the sear spring 15, that is, the trigger force is increased; counterclockwise rotation releases the compression of the sear spring 15, that is, the trigger force is reduced. Loosen the lock pin 4, the teeth of the lock 11 sink into the teeth of the limit gear 9, limiting the rotation of the limit gear 9, thereby fixing the compression of the sear spring 15, that is, fixing the trigger force.

[0036] 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 trigger force adjustment mechanism for a firearm, comprising a grip (5), a sear seat (16) being mounted on the upper end of the grip (5), a sear (7) being slidably fitted in the inner longitudinal direction of the sear seat (16), a trigger (6) being hingedly connected to the sear seat (16), the trigger (6) having a short arm and a long arm, the short arm of the trigger (6) being engaged with the sear (7), and when the long arm of the trigger is pulled, the short arm of the trigger (6) drives the sear (7) to move forward, characterized in that: The rear end of the sear seat (16) is provided with a threaded connector, on which a sear spring (15) and a gasket (14) are sleeved, and the end of the threaded connector is threadedly matched with an adjusting screw (19), the front end surface of the adjusting screw (19) is in contact with the gasket (14), and the two ends of the sear spring (15) act on the rear end of the sear seat (16) and the gasket (14) respectively, and the sear spring (15) is in a compressed state. When the sear seat (16) moves forward, the sear spring (15) provides a trigger force, and the compression amount of the sear spring (15) is adjusted by the adjusting screw (19), thereby adjusting the trigger force.

2. The trigger force adjustment mechanism of a firearm according to claim 1, characterized in that: A limit gear (9) is mounted on the adjusting screw (19), and the adjusting screw (19) can drive the limit gear (9) to rotate. A lock pin (4) is arranged on the handle (5) in the horizontal direction. A pressing head is arranged at one end of the lock pin (4), and a lock (11) is arranged at the other end of the lock pin (4). A locking tooth is arranged on the lock lock (11), and a lock spring (12) is sleeved on the lock pin (4). The two ends of the lock spring (12) act on the pressing head and the handle (5) respectively. Under the spring force of the lock spring (12), the locking tooth on the lock lock (11) is engaged with the limit gear (9), so as to form circumferential positioning of the limit gear (9) and the adjusting screw (19). When the pressing head is pressed, the locking tooth on the lock lock (11) is separated from the limit gear (9), and the limit gear (9) and the adjusting screw (19) can rotate, thereby adjusting the trigger force.

3. The trigger force adjustment mechanism of a firearm according to claim 2, characterized in that: The limiting gear (9) and the adjusting screw rod (19) are connected by means of an elastic cylindrical pin (13).

4. The trigger force adjustment mechanism of a firearm according to claim 1, characterized in that: The rear end of the adjusting screw rod (19) extends out of the handle (5).

5. The trigger force adjustment mechanism of a firearm according to claim 1, characterized in that: The lock pin (4) is threadedly connected to the lock (11); the pressing head of the lock pin (4) is square, and a corresponding clearance notch is provided on the handle (5); when the pressing head is pressed, the pressing head of the lock pin (4) can be completely immersed in the clearance notch, so that the handle (5) can be installed in the receiver (1).

6. The trigger force adjustment mechanism of a firearm according to claim 5, characterized in that: A pressing head corresponding to the locking pin (4) on the casing (1) is provided with a clearance notch. When the transmitter (3) is installed in the casing (1), the pressing head cooperates with the clearance notch on the casing (1) to limit the rotation of the locking pin (4).

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