Firearm trigger detection device

Abstract

The present invention discloses a firearm trigger detection device, which belongs to the field of trigger detection technology. The device comprises a main housing and a clamping block slidably connected to the main housing, a limit spindle, an adjustment swing arm, a displacement swing arm, a slider, a magnet block, a Hall sensor, and a driven shaft. The limit spindle is rotatably connected to the cavity of the main housing, and a reset assembly for resetting the limit spindle is provided between the limit spindle and the cavity of the main housing. The beneficial effects of the present invention are as follows: the driven shaft is driven by the trigger firing action, and drives the adjustment swing arm, the limit spindle, and the displacement swing arm to rotate in turn. The rotational action is converted into linear motion of the slider and the magnet block through the cooperation of the short-stroke groove and the straight pin, so that the linear distance between the magnet block and the Hall sensor changes to generate an electrical signal, thereby accurately judging the firing node of the firearm trigger and achieving high detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of trigger detection, and in particular to a firearm trigger detection device. Background Art

[0002] As a key component in firearm operation, the performance and parameters of a firearm trigger directly impact its accuracy, reliability, and safety. Accurately testing trigger-related parameters is crucial during firearm R&D, production, quality inspection, and maintenance.

[0003] Traditional trigger detection devices use a clamp to be mounted on the trigger guard of a firearm. By adjusting the distance of the trigger sensor link, pulling the slider, and touching the switch, an electrical signal is given to determine the shooter's firing node. However, the position of the clamp on the guard and the adjustment of the linkage link require certain adjustment behaviors and reciprocating adjustments to place the trigger switch at the firing node. The adjustment process and range are easily limited, and only a single firing node can be measured. Summary of the Invention

[0004] The purpose of the present invention is to provide a firearm trigger detection device in order to solve the above-mentioned technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A firearm trigger detection device comprises a main housing and a clamping block slidably connected to the main housing, and further comprises:

[0007] Limiting spindle: The limiting spindle is rotatably connected to the cavity of the main housing, and a reset component for resetting the limiting spindle is provided between the limiting spindle and the cavity of the main housing;

[0008] Adjusting swing arm: The adjusting swing arm is connected to one end of the limit spindle through a hand screw, and a long stroke groove that matches the hand screw is opened on the surface of the adjusting swing arm;

[0009] Displacement swing arm: the displacement swing arm is fixedly connected to the other end of the limiting spindle;

[0010] Slider: The main housing is provided with a circular hole for sliding installation of the slider, the lower end of the slider is provided with a magnet block, the lower end of the circular hole is open and provided with a head, the inner side of the head is provided with a Hall sensor, the surface of the slider is provided with a straight pin, the side wall of the circular hole is provided with a long waist hole for the straight pin to slide, and the surface of the displacement swing arm is provided with a short stroke groove that cooperates with the straight pin;

[0011] Driven shaft: The driven shaft is rotatably connected to one end of the adjusting swing arm.

[0012] As a further description of the above technical solution:

[0013] A V-shaped groove is formed between the upper end surface of the main shell and the clamping block. A long bolt threadedly connected to the main shell for driving the clamping block to move is provided through the surface of the clamping block.

[0014] As a further description of the above technical solution:

[0015] A side cover is provided on the surface of the main shell.

[0016] As a further description of the above technical solution:

[0017] The reset assembly includes two springs, and the surface of the limiting main shaft is provided with two arc grooves for placing the springs. One end of the two springs is connected to one end of the inner wall of the arc groove, and the inner wall of the main shell is provided with two protrusions for connecting the other end of the spring.

[0018] As a further description of the above technical solution:

[0019] The displacement swing arm is fixed to the limiting spindle by countersunk screws, the driven shaft is rotatably connected to the adjustment swing arm through a first bearing, and a fixing screw is provided at the end of the driven shaft, and the limiting spindle is rotatably connected to the inner wall of the cavity of the main shell through a second bearing.

[0020] As a further description of the above technical solution:

[0021] The end surface of the limiting main shaft is provided with a slot for the adjusting swing arm to be clamped in, and one side of the adjusting swing arm is provided with a limiting tooth that matches the limiting main shaft.

[0022] As a further description of the above technical solution:

[0023] The model of the first bearing is MR74, and the model of the second bearing is MR106ZZ.

[0024] As a further description of the above technical solution:

[0025] The Hall sensor is packaged in TO-92.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] The present invention utilizes a V-groove and a long bolt in conjunction with the main housing to securely clamp the lower portion of a firearm's trigger guard, allowing for easy adjustment to various trigger guard models. The adjustable swing arm is connected to the limit spindle via a thumbscrew, and a long travel slot allows for easy adjustment of the relative position of the two, ensuring simple operation.

[0028] In the present invention, the driven shaft is driven by the trigger firing action, which in turn drives the adjustment swing arm, the limit spindle, and the displacement swing arm to rotate. The short-stroke groove cooperates with the straight pin to convert the rotational action into the linear motion of the slider and the magnet block. The linear distance between the magnet block and the Hall sensor changes to generate an electrical signal, thereby accurately determining the firing node of the firearm trigger with high detection accuracy.

[0029] In the present invention, during installation and adjustment, the installation and adjustment range is less restricted. By using a Hall sensor, the slider and the magnet are displaced by adjusting the swing arm, the limit spindle and the rotation of the displacement swing arm, and the trigger displacement can be detected in real time. For example, if the trigger pull stroke is 5mm, the device can detect the trigger displacement from any position in the range of 0-5mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of the detection device provided in an embodiment of the present invention after the main housing is hidden is shown;

[0031] Figure 2 A first side sectional schematic diagram of the detection device structure provided according to an embodiment of the present invention is shown;

[0032] Figure 3 A second side sectional schematic diagram of the detection device structure provided according to an embodiment of the present invention is shown;

[0033] Figure 4 It shows a schematic front cross-sectional view of the structure of a detection device provided in an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the structure of an adjustable swing arm according to an embodiment of the present invention is shown;

[0035] Figure 6 A schematic diagram of the detection device and firearm installation structure provided according to an embodiment of the present invention is shown.

[0036] Legend: 1. Main housing; 2. Adjustment arm; 3. Driven shaft; 4. Limit spindle; 5. Displacement arm; 6. Clamping block; 7. Thumb screw; 8. Fixing screw; 9. Countersunk screw; 10. First bearing; 11. Second bearing; 12. Side cover; 13. Slider; 14. Straight pin; 15. Magnet block; 16. Head; 17. Hall sensor; 18. V-groove; 19. Spring; 20. Round hole; 21. Long waist hole; 22. Limiting tooth; 23. Long stroke groove; 24. Short stroke groove. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] like Figures 1-6 As shown, a firearm trigger detection device comprises a main housing 1 and a clamping block 6 slidably connected to the main housing 1. The main housing 1 is processed and formed to have a cavity. The clamping block 6 slides so that the main housing 1 is clamped and fixed to the lower part of the firearm trigger guard (see the attached manual). Figure 6 As shown), then pre-tighten the clamping block 6, further comprising:

[0039] Limiting spindle 4: The limiting spindle 4 is rotatably connected to the cavity of the main housing 1. The limiting spindle 4 is T-shaped, and the end with the smaller shaft diameter is rotatably connected to the cavity of the main housing 1. A reset component for resetting the limiting spindle 4 is provided between the limiting spindle 4 and the cavity of the main housing 1. The limiting spindle 4 deflects when subjected to force, and when the force is released, it deflects in the opposite direction and returns to its original state under the action of the reset component;

[0040] Adjusting the swing arm 2: The adjusting swing arm 2 is connected to one end of the limit spindle 4 through a hand screw 7. A threaded hole for threaded connection of the hand screw 7 is formed at one end of the limit spindle 4. The outer surface of the handle end of the hand screw 7 is provided with anti-slip fine lines. A long stroke groove 23 is provided on the surface of the adjusting swing arm 2 to match the hand screw 7. The hand screw 7 passes through the long stroke groove 23 and is threadedly connected to the threaded hole at the end of the limit spindle 4. After the hand screw 7 is tightened, the adjusting swing arm 2 is fixed so that the limit spindle 4 and the adjusting swing arm 2 form a whole. The deflection of the limit spindle 4 will drive the adjusting swing arm 2 to deflect synchronously. When the hand screw 7 is not tightened, the staff can use the long stroke groove 23 to adjust the relative position between the limit spindle 4 and the adjusting swing arm 2;

[0041] Displacement swing arm 5: The displacement swing arm 5 is fixedly connected to the other end of the limit spindle 4. The displacement swing arm 5 and the limit spindle 4 form a whole. The deflection of the limit spindle 4 will drive the displacement swing arm 5 to deflect synchronously;

[0042] Slider 13: The main shell 1 is provided with a circular hole 20 for sliding installation of the slider 13. The inner wall of the circular hole 20 is smooth. A magnet block 15 is provided at the lower end of the slider 13. The magnet block 15 and the slider 13 are fixed by bolts or welding. The lower end of the circular hole 20 is open and provided with a head 16. A Hall sensor 17 is provided inside the head 16 to ensure that the front of the Hall sensor 17 forms a linear motion relationship with the magnet block 15. A straight pin 14 is provided on the surface of the slider 13. The straight pin 14 is cylindrical and movably plugged into the slider 13. The straight pin 14 is perpendicular to the axis of the circular hole 20. The side wall of the circular hole 20 is provided with a pin 1 The sliding long waist hole 21 has a length of 10 mm and is used to limit the sliding distance of the straight pin 14, that is, the sliding distance between the slider 13 and the magnet block 15. The surface of the displacement swing arm 5 is provided with a short-stroke groove 24 that cooperates with the straight pin 14. When the limit spindle 4 deflects and drives the displacement swing arm 5, the short-stroke groove 24 cooperates with the straight pin 14 to drive the straight pin 14 to slide along the long waist hole 21, thereby driving the slider 13 and the magnet block 15 to slide in the circular hole 20. The distance between the magnet block 15 and the Hall sensor 17 changes, and then an electrical signal is generated, thereby determining the firing node of the firearm trigger;

[0043] Driven shaft 3: The driven shaft 3 is rotatably connected to one end of the adjusting swing arm 2, and the driven shaft 3 is in contact with the firearm trigger. When the firearm trigger is fired, the driven shaft 3 is squeezed, thereby causing the adjusting swing arm 2 to deflect. The deflection of the adjusting swing arm 2 drives the limit spindle 4 to deflect, and the deflection of the limit spindle 4 drives the displacement swing arm 5 to deflect synchronously. The deflection of the displacement swing arm 5 drives the slider 13 and the magnet block 15 to slide in the circular hole 20 through the straight pin 14, that is, converting the rotational motion into linear motion. When the angle changes, the straight-line distance between the magnet block 15 and the Hall sensor 17 will change, thereby generating an electrical signal.

[0044] Furthermore, a V-shaped groove 18 is formed between the upper end surface of the main housing 1 and the clamping block 6 (see the appendix of the specification). Figure 2 As shown), under the action of the V-shaped groove 18, it conforms to the structure of the trigger guard of the firearm, which facilitates better clamping and fixing at the lower part of the trigger guard of the firearm. A long bolt threadedly connected to the main housing 1 is provided on the surface of the clamping block 6 for driving the clamping block 6 to move. Tightening the long bolt drives the clamping block 6 to move, effectively ensuring stability after clamping.

[0045] Furthermore, a side cover 12 is provided on the surface of the main shell 1, and the side cover 12 is connected and fixed to the main shell 1 by bolts. The side cover 12 is easy to install and disassemble. After the side cover 12 is removed, it is easy to inspect and replace the components inside the main shell 1.

[0046] Furthermore, the reset assembly includes two springs 19, and the surface of the limiting spindle 4 is provided with two arc grooves for placing the springs 19 (see the appendix of the manual). Figure 1), when the limit spindle 4 is deflected by force, the spring 19 will be compressed. The spring 19 is compressed and stores force to provide elastic force for subsequently driving the limit spindle 4 to deflect in the opposite direction and reset. One end of the two springs 19 is connected to one end of the inner wall of the arc groove, and the inner wall of the main shell 1 is provided with two protrusions for connecting the other end of the spring 19.

[0047] Furthermore, the displacement swing arm 5 is connected and fixed to the limiting spindle 4 by a countersunk screw 9. A countersunk hole matching the countersunk screw 9 is provided on the surface of the displacement swing arm 5, so that after the countersunk screw 9 is tightened and fixed, its end is embedded in the countersunk hole, which improves the aesthetics. The driven shaft 3 is rotatably connected to the adjusting swing arm 2 through the first bearing 10, ensuring the smoothness of the rotation of the driven shaft 3, and a fixing screw 8 is provided at the end of the driven shaft 3. The limiting spindle 4 is rotatably connected to the inner wall of the cavity of the main shell 1 through the second bearing 11. There are two second bearings 11, and the limiting spindle 4 is supported inside the cavity of the main shell 1 by means of the second bearing 11.

[0048] Furthermore, a slot is provided on the end face of the limiting spindle 4 for the adjusting swing arm 2 to be engaged. The adjusting swing arm 2 is engaged in the slot, which effectively constrains the relative deflection between the adjusting swing arm 2 and the limiting spindle 4. A limiting tooth 22 is provided on one side of the adjusting swing arm 2 to cooperate with the limiting spindle 4. Under the action of the limiting tooth 22, when the hand screw 7 is tightened, it constrains the relative displacement between the adjusting swing arm 2 and the limiting spindle 4.

[0049] Furthermore, the model of the first bearing 10 is MR74, and the model of the second bearing 11 is MR106ZZ.

[0050] Furthermore, the Hall sensor 17 adopts the TO-92 package. The TO-92 package has the characteristics of small size, low cost, and easy installation. After the Hall sensor 17 adopts the TO-92 package, it can better adapt to different circuit designs and installation requirements.

[0051] Working principle:

[0052] First, according to the model of the trigger guard of the firearm, place the V-shaped groove 18 on the lower part of the guard, pre-tighten the clamping block 6, then adjust the swing arm 2, place the driven shaft 3 at the extreme position after the trigger is fired, and then tighten the long bolt of the clamping block 6. After installation, adjust the swing arm 2 so that it can rotate backward;

[0053] When the above is installed in place, when the trigger of the firearm is pulled, the driven shaft 3 is forced to rotate, causing the adjusting swing arm 2 to rotate. Since the limit spindle 4 and the displacement swing arm 5 are connected to form a whole, they rotate at the same time, and drive the straight pin 14 to link the slider 13 and the magnet block 15 to slide in the circular hole 20, converting the rotational action into linear motion. When the angle changes, the distance between the magnet block 15 and the Hall sensor 17 changes, thereby generating an electrical signal, thereby judging the start and firing point of the trigger.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A firearm trigger detection device, characterized in that: It comprises a main housing (1) and a clamping block (6) slidably connected to the main housing (1), and further comprises: A limiting spindle (4): the limiting spindle (4) is rotatably connected to the cavity of the main housing (1), and a reset component for resetting the limiting spindle (4) is provided between the limiting spindle (4) and the cavity of the main housing (1); Adjusting swing arm (2): the adjusting swing arm (2) is connected to one end of the limiting spindle (4) via a hand screw (7), and a long stroke groove (23) is provided on the surface of the adjusting swing arm (2) to match the hand screw (7); Displacement swing arm (5): the displacement swing arm (5) is fixedly connected to the other end of the limiting main shaft (4); Slider (13): The main housing (1) is provided with a circular hole (20) for slidingly mounting the slider (13), a magnet block (15) is provided at the lower end of the slider (13), the lower end of the circular hole (20) is open and provided with a head (16), a Hall sensor (17) is provided on the inner side of the head (16), a straight pin (14) is provided on the surface of the slider (13), a long waist hole (21) for sliding the straight pin (14) is provided on the side wall of the circular hole (20), and a short stroke groove (24) is provided on the surface of the displacement swing arm (5) to match the straight pin (14); Driven shaft (3): the driven shaft (3) is rotatably connected to one end of the adjusting swing arm (2); The end surface of the limiting spindle (4) is provided with a slot for the adjusting swing arm (2) to be engaged, and one side of the adjusting swing arm (2) is provided with a limiting tooth (22) that cooperates with the limiting spindle (4); The driven shaft (3) is in contact with the firearm trigger. When the firearm trigger is fired, the driven shaft (3) is squeezed, thereby causing the regulating arm (2) to deflect. The deflection of the regulating arm (2) drives the limit main shaft (4) to deflect. The deflection of the limit main shaft (4) drives the displacement swing arm (5) to deflect synchronously. The deflection of the displacement swing arm (5) drives the slider (13) and the magnet block (15) to slide in the circular hole (20) through the straight pin (14). The distance between the magnet block (15) and the Hall sensor (17) changes, thereby generating an electrical signal, thereby determining the firing node of the firearm trigger.

2. A firearm trigger detection device according to claim 1, characterized in that: A V-shaped groove (18) is formed between the upper end surface of the main housing (1) and the clamping block (6), and a long bolt threadedly connected to the main housing (1) for driving the clamping block (6) to move is provided through the surface of the clamping block (6).

3. The firearm trigger detection device according to claim 1, characterized in that: A side cover (12) is provided on the surface of the main housing (1).

4. The firearm trigger detection device according to claim 1, characterized in that: The reset assembly includes two springs (19), and the surface of the limiting main shaft (4) is provided with two arc-shaped grooves for accommodating the springs (19). One end of the two springs (19) is connected to one end of the inner wall of the arc-shaped groove, and the inner wall of the main housing (1) is provided with two protrusions for connecting the other end of the spring (19).

5. The firearm trigger detection device according to claim 2, characterized in that: The displacement swing arm (5) is fixedly connected to the limiting main shaft (4) via a countersunk screw (9); the driven shaft (3) is rotationally connected to the regulating swing arm (2) via a first bearing (10); a fixing screw (8) is provided at the end of the driven shaft (3); and the limiting main shaft (4) is rotationally connected to the inner wall of the cavity of the main housing (1) via a second bearing (11).

6. The firearm trigger detection device according to claim 5, characterized in that: The model of the first bearing (10) is MR74, and the model of the second bearing (11) is MR106ZZ.

7. The firearm trigger detection device according to claim 1, characterized in that: The Hall sensor (17) is packaged in TO-92.

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