Universal optical axis adjustable firearm cold calibration instrument

Abstract

The utility model discloses a universal gun cold calibration instrument with an adjustable optical axis. The universal gun cold calibration instrument comprises a supporting cylinder, a connecting part, a laser cavity and a laser generator. When in use, the firearm cold calibration instrument with the adjustable laser optical axis is mounted and connected in a gun barrel, the height-direction adjusting screw and the azimuth-direction adjusting screw can be adjusted to enable the laser optical axis to intersect with the optical axis of the aiming line for correcting the ballistic height at one point at the distance according to the position relation of the aiming lines of different firearms, live firing is not needed during firearm calibration, and the firearm cold calibration instrument is convenient to use. And a calibration target does not need to be prepared, so that the firearm sighting device is simple and convenient to calibrate.

Description

A general-purpose adjustable optical axis firearm cold calibration instrument Technical Field

[0001] This utility model relates to the field of firearms technology, and in particular to a universal optical axis adjustable firearm cold calibration instrument. Background Technology

[0002] Currently, most laser-based calibration instruments and firearms are mounted inside the barrel or on the sight rail, with the laser axis parallel to the barrel axis. When calibrating sights or iron sights, the bullet impact point method and the sight line method are generally used.

[0003] Point of impact method: Based on the point of impact of the projectile on the target, the average point of impact is calculated. The distance of the average point of impact in the X and Y directions from the target center is the value calculated by the calibration formula, which is the correction amount. Mechanical sights are adjusted by adjusting the height of the front sight and the left and right of the rear sight. Optical sights are adjusted by adjusting the left and right and height of the reticle inside the scope by adjusting the screw.

[0004] The aiming line method requires different mounting methods for the gun calibrator. Based on the positional relationship of the three axes—the aiming line of the iron sight, the optical axis of the optical sight, and the optical axis of the calibrator—and considering the ballistic height, the positional relationship is marked on the calibration target using planar coordinates to indicate the crosshairs of the iron sight, the optical sight, and the calibrator's optical axis. The calibration target is placed at a certain distance in front of the firearm, so that the calibrator's optical axis aligns with the calibrator's optical axis crosshairs. The front sight and notch base of the iron sight are adjusted so that the aiming line of the iron sight aligns with the corresponding crosshair of the iron sight. The adjustment device of the optical sight is adjusted so that the optical axis of the optical sight aligns with the crosshair of the optical sight.

[0005] However, both the point-of-impact method and the line-of-sight method require live-fire shooting or the preparation of calibration targets, which to some extent leads to economic waste and increases manpower and material costs. Summary of the Invention

[0006] The purpose of this invention is to provide a universal optical axis adjustable firearm cold-setting instrument to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A universal optical axis adjustable firearm cold-setting device includes a support cylinder, a connecting part, a laser cavity, and a laser generator. The support cylinder includes a barrel section, a flash suppressor section, and a pull rod. A connecting cone is provided between the barrel section and the flash suppressor section. The upper part of the connecting part is connected to the end of the flash suppressor section away from the barrel section, and the lower part of the connecting part is connected to the laser cavity. The pull rod is inserted into the support cylinder, and one end of the pull rod is provided with a frustum-shaped expansion part. The end of the barrel section away from the flash suppressor section is provided with evenly distributed expansion grooves, and the expansion part can expand the expansion grooves. The side of the laser cavity is provided with a first adjustment hole and a second adjustment hole. The first adjustment hole is horizontal and the second adjustment hole is horizontal. The axial direction is perpendicular to the first adjusting hole, forming an orthogonal arrangement. The first adjusting hole is internally threaded to a first adjusting screw, and the second adjusting hole is internally threaded to a second adjusting screw. The first and second adjusting screws include a threaded portion and a hemispherical working portion. The working portion is in contact with the laser generator housing. The laser generator is installed inside the laser cavity. The laser generator includes a laser generator housing, a laser generating module, a battery, and spring plates. The laser generating module and the battery are installed inside the laser generator housing. The battery powers the laser generating module. Two spring plates are provided on the side wall of the laser generator housing. The spring plates are located in opposite directions to the first and second adjusting holes, respectively.

[0009] Furthermore, the end of the pull rod away from the expansion portion is provided with a threaded section, which passes through the support cylinder and is connected to the set screw.

[0010] Furthermore, wings are symmetrically arranged on the sides of the expansion portion, and the wings are engaged within the expansion groove.

[0011] Furthermore, the threaded portions of both the first adjusting screw and the second adjusting screw are connected to the first screw cap.

[0012] Furthermore, the opening at the end of the laser cavity furthest from the connecting part is sealed by a second screw cap.

[0013] Furthermore, a switch hole is provided on the side of the laser cavity, and a switch knob is provided inside the switch hole.

[0014] Furthermore, the positive terminal of the battery is connected to the laser generating module, and the negative terminal of the battery is connected to the switch knob via a cable.

[0015] Furthermore, one end of the laser generator housing is conical with a first through-hole for laser beam penetration in the middle, the other end of the laser generator housing is sealed by a battery cap, and a second through-hole is provided at the connection part corresponding to the first through-hole.

[0016] Furthermore, the inner end of the laser cavity near the connecting part has an arc surface that matches the end of the laser generator housing.

[0017] Furthermore, the spring sheet is fixed to the side wall of the laser generator housing by rivets.

[0018] Beneficial effects:

[0019] The adjustable laser optical axis firearm cold calibration device of this utility model is installed and connected inside the barrel. According to the position relationship of the aiming line of different firearms, the elevation adjustment screw and the azimuth adjustment screw can be adjusted so that the laser optical axis intersects with the aiming line optical axis of the corrected ballistic height at a point at a distance. When calibrating firearms, there is no need for live shooting or preparation of calibration targets, making the calibration of firearm sights simple and convenient. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the structure of this utility model combined with a gun barrel;

[0021] Figure 2 is a schematic diagram of the overall structure of this utility model;

[0022] Figure 3 is a side view of this utility model;

[0023] Figure 4 is a side view of this utility model from another perspective;

[0024] Figure 5 is an exploded view of this utility model;

[0025] Figure 6 is a cross-sectional view of this utility model.

[0026] Labels in the diagram: 1. Barrel; 2. Flash suppressor; 3. Barrel section; 4. Flash suppressor section; 5. Expansion groove; 6. Connecting part; 7. Laser cavity; 8. Connecting cone; 9. First screw cap; 10. First adjusting screw; 11. Switch knob; 12. Second screw cap; 13. Set screw; 14. Second adjusting screw; 15. First adjusting hole; 16. Second adjusting hole; 17. Pull rod; 18. Threaded section; 19. Expansion part; 20. Spring plate; 21. Second through hole; 22. Laser generating module; 23. Battery; 24. First through hole. Detailed Implementation

[0027] In the description of this embodiment, it should be noted that the terms "upper," "lower," "inner," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and their corresponding connection methods can also be achieved through conventional technical means, which will not be described in detail in this application. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example

[0030] A universal optical axis adjustable firearm cold-setting device, as shown in Figures 1 to 6, includes a support cylinder, a connecting part 6, a laser cavity 7, and a laser generator. The support cylinder includes a barrel section 3, a flash suppressor section 4, and a pull rod 17. A connecting cone 8 is provided between the barrel section 3 and the flash suppressor section 4. The upper part of the connecting part 6 is connected to the end of the flash suppressor section 4 away from the barrel section 3, and the lower part of the connecting part 6 is connected to the laser cavity 7. The pull rod 17 is inserted into the support cylinder, and one end of the pull rod 17 is provided with a frustum-shaped expansion part 19. Four expansion grooves 5 are evenly provided at the end of the barrel section 3 away from the flash suppressor section 4. The expansion part 19 can expand the expansion grooves 5. The side of the laser cavity 7 is provided with a first adjustment hole 15 and a second adjustment hole 16. The first adjustment hole 15 is horizontal, and the second adjustment hole 16 is horizontal. The axial direction is perpendicular to the first adjustment hole 15, forming an orthogonal layout. The first adjustment hole 15 is internally threaded to the first adjustment screw 10, and the second adjustment hole 16 is internally threaded to the second adjustment screw 14. The first adjustment screw 10 and the second adjustment screw 14 include a threaded part and a hemispherical working part. The working part is in contact with the laser generator housing. The laser generator is installed inside the laser cavity 7. The laser generator includes a laser generator housing, a laser generating module 22, a battery 23, and spring plates 20. The laser generating module 22 and the battery 23 are installed inside the laser generator housing. The battery 23 supplies power to the laser generating module 22. Two spring plates 20 are fixedly installed on the side wall of the laser generator housing by rivets. The spring plates 20 are located in the opposite direction of the first adjustment hole 15 and the second adjustment hole 16, respectively.

[0031] Specifically, the cold-calibration device in this embodiment is a sight line indicator device for calibrating firearm sights and is applicable to firearms of various calibers. In use, barrel section 3 connects to barrel 1, flash suppressor section 4 connects to flash suppressor 2, and the connecting cone 8 between barrel section 3 and flash suppressor section 4 can be used to mate with muzzle sections of different calibers, ensuring the support tube remains concentric with the bore. The support tube has a hollow interior to accommodate the pull rod 17. After the pull rod 17 is inserted into the support tube, the expansion section 19 contacts and expands with the expansion groove 5 at the end of the support tube, ensuring the end of the support tube is concentric and fixed within the barrel 1. A laser cavity 7 is connected to the lower part of the support cylinder via a connecting part 6. A first adjustment hole 15 and a second adjustment hole 16 are provided on the outer side of the laser cavity 7. A first adjustment screw 10 and a second adjustment screw 14 are installed within the first adjustment hole 15 and the second adjustment hole 16. The adjustment screws are threadedly connected to a first screw cap 9 via a threaded portion. The working part of the adjustment screw is hemispherical and contacts the laser generator housing installed inside the laser cavity 7. A spring plate 20 is provided on the outer side of the laser generator housing, and the position of the spring plate 20 is opposite to the positions of the first adjustment hole 15 and the second adjustment hole 16. Therefore, the position of the laser generator housing in the laser cavity 7 can be adjusted by rotating the adjustment screws. Specifically, the first adjustment screw 10 can be used to adjust the left and right directions, and the second adjustment screw 14 can be used to adjust the height direction, thereby precisely adjusting the laser emission direction. A laser generation module 22 is installed inside the laser generator housing for emitting laser light, and the laser generation module 22 is powered by a battery 23.

[0032] Preferably, the end of the pull rod 17 away from the expansion portion 19 is provided with a threaded section 18, which passes through the support cylinder and is connected to the set screw 13. After the pull rod 17 is inserted into the support cylinder, one end of the threaded section 18 is fixedly connected to the outer end of the support cylinder by the set screw 13. The pull rod 17 can be moved towards the expansion portion 19 by rotating the set screw 13, thereby causing the expansion portion 19 to expand the expansion groove 5 of the support cylinder to fix the position of the support cylinder within the barrel 1. Therefore, the expansion size of the expansion groove 5 can be adjusted by controlling the position of the expansion portion 19, allowing the support cylinder to adapt to barrels 1 of different calibers.

[0033] Preferably, the expansion portion 19 is symmetrically provided with wings on its sides. The wings are engaged in the expansion groove 5. When the expansion portion 19 contacts the expansion groove 5 and expands it, the wings will be embedded in the expansion groove 5, thereby preventing the tie rod 17 from moving in a circumferential direction relative to the support cylinder.

[0034] Preferably, the threaded portions of the first adjusting screw 10 and the second adjusting screw 14 are both connected to the first screw cap 9. Specifically, the two first screw caps 9 are respectively threaded to the threaded portions of the first adjusting screw 10 and the second adjusting screw 14, so that the contact degree between the working parts of the first adjusting screw 10 and the second adjusting screw 14 and the laser generator housing can be adjusted by rotating the screw caps, thereby ultimately realizing the emission direction of the laser generator.

[0035] Preferably, the opening at the end of the laser cavity 7 away from the connecting part 6 is sealed by the second screw cap 12. Opening the second screw cap 12 allows the laser generator inside the laser cavity 7 to be taken out or installed, making it convenient for staff to perform maintenance or adjustment.

[0036] Preferably, a switch hole is provided on the side of the laser cavity 7, and a switch knob 11 is installed inside the switch hole. The positive terminal of the battery 23 is connected to the laser generating module 22, and the negative terminal of the battery 23 is connected to the switch knob 11 via a cable. Inside the laser generator housing, the positive terminal of the battery 23 is connected to the laser generating module 22 to supply power, while the negative terminal of the battery 23 is connected to the switch knob 11 via a cable, so that the power supply to the laser generating module 22 can be controlled by rotating the switch knob 11.

[0037] Preferably, one end of the laser generator housing is conical with a first penetration hole 24 in the middle for laser beam to pass through. The other end of the laser generator housing is sealed by a battery cap 23. A second penetration hole 21 is provided at the connecting part 6 corresponding to the first penetration hole 24. The laser generating module 22 is located inside the laser generator housing. The emitted laser beam passes through the first penetration hole 24 and the second penetration hole 21 in sequence to be emitted to the designated target. The battery cap 23 is easy to open and install. If the laser generating module 22 or the battery 23 malfunctions, the operator can quickly remove it for corresponding repairs.

[0038] Preferably, the inner surface of the laser cavity 7 near the connecting part 6 has an arc surface that matches the end of the laser generator housing. Specifically, one end of the laser generator housing is conical, and the inner surface of the laser cavity 7 near the conical end has a matching arc surface, thereby facilitating the radial oscillation of the laser generator.

[0039] Although the embodiments of this utility model have been described in the specification, these embodiments are merely illustrative and should not limit the scope of protection of this utility model. Various omissions, substitutions, and modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A universal optical axis adjustable firearm cold boresight, characterized by: The device includes a support cylinder, a connecting part, a laser cavity, and a laser generator. The support cylinder includes a barrel section, a flash suppressor section, and a pull rod. A connecting cone is provided between the barrel section and the flash suppressor section. The upper part of the connecting part is connected to the end of the flash suppressor section away from the barrel section, and the lower part of the connecting part is connected to the laser cavity. The pull rod is inserted into the support cylinder, and one end of the pull rod is provided with a frustum-shaped expansion part. The end of the barrel section away from the flash suppressor section is uniformly provided with expansion grooves, and the expansion part can expand the expansion grooves. The side of the laser cavity is provided with a first adjustment hole and a second adjustment hole. The first adjustment hole is horizontal, and the axis of the second adjustment hole is parallel to the first adjustment hole. The holes are arranged in an orthogonal layout. The first adjusting hole is internally threaded to a first adjusting screw, and the second adjusting hole is internally threaded to a second adjusting screw. The first and second adjusting screws include a threaded portion and a hemispherical working portion. The working portion is in contact with the laser generator housing. The laser generator is installed inside the laser cavity. The laser generator includes a laser generator housing, a laser generating module, a battery, and spring plates. The laser generating module and the battery are installed inside the laser generator housing. The battery powers the laser generating module. Two spring plates are provided on the side wall of the laser generator housing. The spring plates are located in opposite directions of the first and second adjusting holes, respectively.

2. The universal optical axis adjustable firearm cold-setting instrument according to claim 1, characterized in that: The end of the pull rod away from the expansion section is provided with a threaded section, which passes through the support cylinder and is connected to the set screw.

3. The universal optical axis adjustable firearm cold boresight of claim 1, wherein: The expansion section has symmetrically arranged wings on its sides, and the wings are engaged in the expansion groove.

4. The universal optical axis adjustable firearm cold boresight of claim 1, wherein: The threaded portions of both the first adjusting screw and the second adjusting screw are connected to the first screw cap.

5. The universal optical axis adjustable firearm cold-setting instrument according to claim 1, characterized in that: The opening at the end of the laser cavity furthest from the connector is sealed by a second screw cap.

6. The universal optical axis adjustable firearm cold-setting instrument according to claim 1, characterized in that: A switch hole is provided on the side of the laser cavity, and a switch knob is provided inside the switch hole.

7. The universal optical axis adjustable firearm cold-setting instrument according to claim 6, characterized in that: The positive terminal of the battery is connected to the laser generating module, and the negative terminal of the battery is connected to the switch knob via a cable.

8. The universal optical axis adjustable firearm cold-setting instrument according to claim 1, characterized in that: One end of the laser generator housing is conical and has a first penetration hole in the middle for laser to pass through. The other end of the laser generator housing is closed by a battery screw cap. The connecting part has a second penetration hole at a position corresponding to the first penetration hole.

9. The universal optical axis adjustable firearm cold-setting instrument according to claim 1, characterized in that: The inner surface of the laser cavity near the connecting part is an arc surface that matches the end of the laser generator housing.

10. The universal optical axis adjustable firearm cold boresight of claim 1, wherein: The spring sheet is fixed to the side wall of the laser generator housing by rivets.

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