Adjustment mechanism for trigger force of firearm launcher

Abstract

The invention discloses a trigger force adjustment mechanism for a firearm transmitter. The invention can adjust the trigger force of a sniper rifle simply and quickly without the need for tools or disassembly of any parts of the firearm. The invention comprises a grip (5), a sear seat (16) is installed on the upper end of the grip (5), a sear seat (7) is longitudinally slidably fitted in the sear seat (16), a trigger (6) is hinged on the sear seat (16), a short arm of the trigger (6) is snap-connected with the sear (7), a rear end of the sear (7) is provided with a threaded connector, a sear spring (15) and a gasket (14) are sleeved on the threaded connector, an end thread of the threaded connector is fitted with an adjusting screw (10), a front end surface of the adjusting screw (10) is in contact with the gasket (14), two ends of the sear spring (15) act on the tail end of the sear seat (16) and the gasket (14), respectively, when the sear (7) moves forward, the sear spring (15) provides a trigger force, and the compression amount of the sear spring (15) is adjusted by adjusting the screw (10).

Description

Technical Field

[0001] The present 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 a crucial component used by the shooter to control the firing of ammunition. Trigger pull not only impacts the shooter's operating experience but also affects the firearm's reliability, lifespan, accuracy, and other performance characteristics. For sniper rifles, trigger pull significantly influences shooting accuracy. This is particularly true at long ranges, where a mismatch between trigger pull and shooter control can cause the rifle to vibrate, altering the projectile's exit direction and causing the impact point to move away from the aiming point. This vibration is also reflected in the scope, causing the shooter to constantly misalign the scope's reticle with the aiming point, creating a feeling of "missing aim." This increases the shooter's psychological stress and leads to poor shooting performance.

[0003] Large-caliber sniper rifles are primarily used for long-range, precision sniping within 2,000 meters. The targets are small, requiring extremely high accuracy. The shooter must carefully control every aspect of the shooting process, eliminating factors such as breathing, heart rate, and muscle tension. Even a slight tremor during the shot could cause the bullet to deviate by a few centimeters, resulting in a missed target.

[0004] Pulling the trigger is a crucial step in sniper rifle shooting. When using a sniper rifle in combat, the shooter typically pulls the trigger slowly and continuously, ensuring that aim remains constant, the sear moves smoothly, and the entire rifle remains stable. Trigger pull varies depending on the individual and the shooting environment. The appropriate trigger pull varies depending on physical fitness, psychological conditioning, and shooting habits. The required trigger pull also varies depending on high temperatures, low temperatures, and windy conditions. Excessive trigger pull causes excessive muscle tension during the pull, creating the illusion of a missed shot. This distracts the shooter, causing muscle tension and tremors, and can cause the rifle to shake before the bullet is ejected. Too little trigger pull creates a mismatch between heartbeat and action, resulting in premature trigger action, which can cause the sniper rifle to fire while aiming, effectively firing without aiming.

[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. 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 like this:

[0008] A trigger force adjustment mechanism for a firearm firing machine comprises a grip (5), an upper end of the grip (5) is provided with a sear seat (16), a sear (7) is longitudinally slidably fitted in the sear seat (16), 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), and 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 (7) is provided with a threaded connector, on which a sear spring (15) and a gasket (14) are sleeved. The end thread of the threaded connector is threadedly matched with an adjusting screw (10). The front end surface of the adjusting screw (10) contacts the gasket (14). The two ends of the sear spring (15) act on the tail end of the sear seat (16) and the gasket (14), respectively. The sear spring (15) is in a compressed state. When the sear (7) moves forward, the sear spring (15) provides a trigger force. The compression amount of the sear spring (15) is adjusted by the adjusting screw (10), thereby adjusting the trigger force.

[0010] Preferably, a limit gear (9) is installed on the adjusting screw (10), and the adjusting screw (10) can drive the limit gear (9) to rotate. A lock pin (4) is provided on the handle (5) in the transverse direction, and a pressing head is provided at one end of the lock pin (4), and a lock (11) is provided at the other end of the lock pin (4). A locking tooth is provided on the lock (11), and a locking 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 (11 is engaged with the limit gear (9), forming a circumferential positioning of the limit gear (9) and the adjusting screw (10). When the pressing head is pressed, the locking tooth on the lock (11) is disengaged from the limit gear (9), and the limit gear (9) and the adjusting screw (10) can rotate, thereby adjusting the trigger force.

[0011] Preferably, the limiting gear (9) and the adjusting screw (10) are connected via an elastic cylindrical pin (13).

[0012] Preferably, the rear end of the adjusting screw (10) extends out of the handle (5).

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

[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 disassembly of any parts of the firearm. It 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 the precise and stable shooting accuracy of the sniper rifle. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0019] Figure 3 It is a planar schematic diagram of the structure of a firearm transmitter;

[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 iron resistance 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 1. It is a schematic diagram of the locking pin structure;

[0025] Figure 9 Schematic diagram of the lock structure;

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

[0027] Reference numerals

[0028] In the attached figure, 1-receiver, 2-safety, 3-launcher (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 comprises a lock pin 4, a grip 5, a trigger 6, a sear 7, a limit gear 9, an adjusting 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 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 trigger force is mainly the change in spring force generated by compressing the sear spring 15. The size of the trigger force is controlled by adjusting the compression amount of the sear spring 15. The greater the compression amount of the sear spring 15, the greater the spring tension generated, that is, the greater the trigger force. The size of the friction force generated by the movement of the sear 7 generally changes very little and cannot be adjusted. It defaults to a small fixed value. The adjusting screw 10 and the lock buckle 11 of the present invention can realize the adjustment of the compression amount of the sear spring 15.

[0031] The sear spring 15 is pre-compressed by the adjusting screw 10 and the sear seat 16, creating a certain tension. The compression of the sear spring 15 can be adjusted manually by rotating the adjusting screw 10. When the trigger is pulled, the sear 7 moves forward, increasing the compression by X mm (i.e., the length of the engagement surface between the hammer 8 and the sear 7), and the tension also increases. Simultaneously, when the trigger 6 is released after firing, the tension in the sear spring 15 forces the sear 7 to move backward, resetting the trigger 6.

[0032] The adjusting screw 10 contains 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 rotating the adjusting screw 10 with the fingers to prevent slipping during rotation. The U-shaped groove limits the radial rotation of the limit gear; it 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 disengage from the lock 11. The limit gear 9 is inserted into the adjusting screw 10 and is fixed by an elastic cylindrical pin 13 passing through the U-shaped groove. The outer teeth of the limit gear 9 are engaged with the teeth of the lock 11 to ensure that the adjusting screw 10 and the limit gear 9 do not rotate radially, and the compression amount of the sear spring 15 after adjustment is limited to remain stationary; 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 engaged with the teeth of the limit gear 9, preventing the limit gear 9 and the adjusting screw 10 from rotating. To adjust the trigger pull, pressing the catch pin 4 disengages the catch 11 from the limit gear 9, allowing manual rotation of the adjustment screw 10. The catch 11 is threadedly connected to the catch pin 4, which is a square structure. When the transmitter 3 is installed in the receiver 1, the catch pin 4 must be pressed. Once installed, the catch pin 4 pops out, and the square groove restricts its rotation, preventing the catch 3 and the catch pin 4 from loosening and falling off.

[0033] In this embodiment, the limit gear 9 is inserted into the adjusting screw 10 and is fixed by an elastic cylindrical pin 13 inserted into a U-shaped groove (or a strip groove). That is, after the limit gear 9 is locked, when the trigger 6 is pulled, the adjusting screw 10 can move axially within the limit gear 9. If the adjusting screw 10 does not move within 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 within 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 adjusting screw 10 as a whole from the tail hole of the grip 5 and connect them with the sear 7 through a 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 and install the transmitter 3 into the receiver 1, so that the lock pin 4 pops 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, to adjust the trigger force of the trigger mechanism 3, the lock pin 4 is pressed, disengaging the lock pin 11 from the limit gear 9. The limit gear 9 and the adjusting screw 10 are no longer restrained by the lock pin 11, allowing the adjusting screw 10 to rotate freely. Clockwise rotation compresses the sear spring 15, increasing the trigger force; counterclockwise rotation releases the compression of the sear spring 15, reducing the trigger force. Releasing the lock pin 4 causes the teeth of the lock pin 11 to sink into the teeth of the limit gear 9, limiting its rotation and thereby fixing the compression of the sear spring 15 and, consequently, 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 and are not limiting. 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 (16) mounted on the upper end of the grip (5), a sear (7) being longitudinally slidably engaged with the sear (16), a trigger (6) being hingedly connected to the sear (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 (7) is provided with a threaded connector, on which a sear spring (15) and a gasket (14) are sleeved, and the end thread of the threaded connector is threadedly matched with an adjusting screw (10), the front end surface of the adjusting screw (10) is in contact with the gasket (14), and the two ends of the sear spring (15) act on the tail end of the sear seat (16) and the gasket (14), respectively. The sear spring (15) is in a compressed state. When the sear (7) moves forward, the sear spring (15) provides a trigger force. The compression amount of the sear spring (15) is adjusted by adjusting the screw (10), thereby adjusting the trigger force. A limit gear (9) is installed on the adjusting screw (10), and the adjusting screw (10) can drive the limit gear (9) to rotate. A lock pin (4) is provided on the handle (5) in the horizontal direction, and a pressing head is provided at one end of the lock pin (4), and a lock (11) is provided at the other end of the lock pin (4). A locking tooth is provided on the lock (11), and a locking 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 locking spring (12), the locking tooth on the lock (11) is engaged with the limit gear (9), forming a circumferential positioning of the limit gear (9) and the adjusting screw (10). When the pressing head is pressed, the locking tooth on the lock (11) is separated from the limit gear (9), and the limit gear (9) and the adjusting screw (10) can rotate, thereby adjusting the trigger force; The limiting gear (9) and the adjusting screw (10) are connected via an elastic cylindrical pin (13); The adjusting screw (10) includes an inner hole thread, an anti-skid knurling pattern, and a U-shaped groove. The inner hole thread is connected to the sear (7). The anti-skid knurling pattern is used to rotate the position of the adjusting screw (10) with a finger to prevent slipping during rotation. The limit gear (9) is inserted into the adjusting screw (10) and is fixed by an elastic cylindrical pin (13) inserted into the U-shaped groove. The U-shaped groove limits the rotation of the limit gear and limits the axial movement of the limit gear (9). The maximum limit position of the axial movement of the limit gear (9) will not be separated from the lock (11).

2. The trigger force adjustment mechanism for a firearm according to claim 1, characterized in that: The rear end of the adjusting screw (10) extends out of the handle (5).

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

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

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