Device for multi-correcting the trajectory

Abstract

Disclosed is an apparatus for multi-correcting a trajectory, the apparatus comprising a trajectory correcting unit in which a polygonal cam comprising a plurality of surfaces different in distance from a rotary center is rotatably installed between a dot sight or an optical signal and a firearm to adjust an angle between an optical axis of the dot sight or optical sight and a gun barrel axis of the firearm, wherein the trajectory correcting unit is installed to be movable in an axis direction, and coaxially provided with two or more polygonal cams to respectively set trajectory correcting angles corresponding to distances in accordance with calibers of a bullet and the kinds of bullet. With this, one dot sight or optical sight can be mounted to firearms using bullets different in the trajectory or firearms different in a caliber from one another, thereby enhancing equipment use efficiency.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean Patent Application No. 10-2011-0026906 filed in the Korean Intellectual Property Office on Mar. 25, 2011, the entire contents of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention relates to an apparatus for multi-correcting a trajectory, and more particularly to an apparatus for multi-correcting a trajectory, in which one dot sight or optical sight can be mounted to firearms using bullets different in the trajectory or firearms different in a caliber from one another, thereby enhancing equipment use efficiency.

(b) Description of the Related Art

Characteristics of a rifle depend on how quickly an aimed shot is possible (speed) and how accurately a target is aimed (accuracy), which is directly related to the aim of the rifle. In general, the aim of the rifle is achieved by aligning a sight and a bead on a line of sight. The aim, based on the alignment between the bead positioned at an end of a gun barrel and the sight positioned on a top of a gun main body, allows a user who uses the firearm to fire accurately in accordance with his/her skill. However, even small vibration or a shake may cause it difficult to adjust the line of sight difficult, and it is disadvantage to do a quick aim required at a short distance or under an urgent situation. In other words, such an aimed-shot method requires complicated procedures and time in catching and checking a target, adjusting the line of sight, aiming, etc. Further, the bead and the sight are so small that they can be susceptible to a small shake when being accurately aligned. Also, if too much attention is paid to adjustment of the line of sight, a user' eyes are riveted to the bead and the sight rather than the target or the front, and thus have a narrow view.

To more enhance accuracy without difficulty in adjusting the fine of sight, an optical sight has been proposed. However, the optical sight employs a telescopic lens and is thus more susceptible to a small shake as magnification becomes higher, thereby making the quick aim impossible.

To solve the above problem, the optical sight employs a no-magnification lens (or a low-magnification lens), and there has been proposed a dot sight using an aiming point instead of the complicated line of sight.

The optical dot sight is simple and makes the quick aim possible, so that it can be advantageously very useful at a short distance or under an urgent situation requiring a prompt reaction. That is, it takes little time to adjust the line of sight, the quick aim is achieved by marking a target with a virtual image of a dot light point, and a clear view is also very effectively secured. Accordingly, there is advantage of minimizing not only the time taken in the aiming, but also an aiming-based obstacle to the view and situation checking.

As shown in FIG. 1, such an optical dot sight includes an inner body tube aligning adjusting terminal 7 placed above a sight mirror housing 2 having a cylindrical structure, a fastening grill 26 detachably coupled to a rifle sight bundle in the form of a railway below the sight mirror housing 2. Further, the optical dot sight includes a protective window 10 at a housing front end, a light emitting diode (LED) 8 used as a light source at a predetermined position above the inner body tube of the housing 2, and a reflective mirror 9 having a certain curvature and placed behind the protective window 10 inside the housing 2.

Generally, the reflective mirror 9 allows an observer's (user's) eyes to see the front end of the dot sight 1, and is coated to reflect a light beam emitted from a light point of the LED 8 and having a wavelength of about 650 nm. Further, the front and rear spherical surfaces of the reflective mirror 9 have the same curvature.

That is, the reflector 9 allows the observer's (user's) eyes to see the front end of the dot sight 1, and reflects the light beam emitted from the light point of the LED 8 and having the wavelength of about 650 nm. The observer (user) fires when a target is marked with the virtual image of the dot light point from the LED 9. Thus, the aim can be easily achieved.

In theory, light beams emitted from a point light source (light point) formed by the LED 8 placed inside the optical dot sight 1 and a mask or reticle placed in front of the LED 8 are reflected from the reflective mirror 9 and intended to parallel enter the observer's eyes. This parallelism is intended to be aligned with a bullet firing axis of the gun barrel. However, if the parallelism of the dot sight 1 is not aligned with the bullet firing axis of the gun barrel, a target cannot be hit even though an observer marks the target with a virtual dot image of the light beam from the LED 8. Therefore, in order to align the parallelism of the dot sight 1 with the bullet firing axis of the gun barrel, there is provided the inner body tube aligning adjusting terminal 7 having vertical and horizontal adjusting functions, thereby aligning an optical axis of the inner body tube with the bullet firing axis.

Also, the foregoing conventional optical dot sight is provided with a trajectory correcting unit for correcting a trajectory. Such a trajectory correcting unit is customized and manufactured in accordance with the kinds of bullet such as a general bullet, an armor-piercing bomb, an incendiary bomb, an armor-piercing incendiary bomb, etc. or in accordance with the calibers of the firearms. Therefore, there arises a problem that different trajectory correcting units are respectively installed in the firearms using bullets different in the trajectory or the firearms different in the caliber. For example, as shown in FIG. 2, a bullet having a trajectory A and a bullet having a trajectory B are different in a trajectory curve in accordance with their calibers, and therefore a machine gun having the trajectory A or a machine gun having the trajectory B are provided with dot sights or optical sights, respectively. Further, the dot sights or the optical sights are respectively provided with the trajectory correcting units corresponding to their calibers.

For example, the bullet having the trajectory A has an error of 4.5 mm between the trajectory curve and the optical axis of the dot sight or optical sight at a distance of 300 m, and an error of 5.8 mm at a distance of 1200 m. Likewise, the bullet having the trajectory B has an error of 3.9 mm at a distance of 300 m, and an error of 4.7 mm at a distance of 1200 m.

Thus, the dot sights or the optical sights installed in the machine gun having the trajectory A and the machine gun having the trajectory B are respectively provided with the trajectory correcting units for adjusting a trajectory correction angle between the bullet firing axis and the optical axis of the dot sight or optical sight with respect to the trajectory curve according to distances. Since such dot sights or optical sights are respectively customized for the machine guns in accordance with their calibers, it can be applied to only the firearm having the corresponding caliber, thereby lowering equipment using efficiency.

SUMMARY OF THE INVENTION

Accordingly, the present invention is conceived to solve the forgoing problems, and an aspect of the present invention is to provide an apparatus for multi-correcting a trajectory, in which one dot sight or optical sight can be mounted to firearms using bullets different in the trajectory or firearms different in a caliber from one another, thereby enhancing equipment use efficiency.

Another aspect of the present invention is to provide an apparatus for multi-correcting a trajectory, in which a position of a rotary shaft can be prevented from being arbitrarily changed in the state that polygonal cams plurally formed in one rotary shaft are selected.

Still another aspect of the present invention is to provide an apparatus for multi-correcting a trajectory, in which the rotary shaft can be replaced to be easily applied and mounted to a firearm having an unprecedented new caliber.

An exemplary embodiment of the present invention provides an apparatus for multi-correcting a trajectory, the apparatus comprising a trajectory correcting unit in which a polygonal cam comprising a plurality of surfaces different in distance from a rotary center is rotatably installed between a dot sight or an optical signal and a firearm to adjust an angle between an optical axis of the dot sight or optical sight and a gun barrel axis of the firearm, wherein the trajectory correcting unit is installed to be movable in an axis direction, and coaxially provided with two or more polygonal cams to respectively set trajectory correcting angles corresponding to distances in accordance with calibers of a bullet and the kinds of bullet.

The apparatus may further comprise a gun barrel supporter formed with a through hole, in which the trajectory correcting unit is installed, and fastened to a firearm; and a base formed with a contact unit to contact one of the two or more polygonal cams, rotatably installed in the gun barrel supporter, and installed with the dot sight or the optical sight.

The trajectory correcting unit may limit an axial moving range by protrusions respectively placed at opposite end parts of an axial moving region and interfering with vicinity of the through hole.

The apparatus may further comprise a stopper that is coupled to one end part of the opposite end parts of the trajectory correcting unit selectively exposed to an outside of the gun barrel supporter and holds an axial moving position of the trajectory correcting unit.

The trajectory correcting unit may be formed with ring-shaped insertion grooves at opposite end parts, respectively, in which an end part of the stopper is inserted.

The stopper may comprise a first projection formed at one side of an end part of the trajectory correcting unit to be inserted in the ring-shaped insertion groove, and the trajectory correcting unit comprises a second projection formed at one side of an inner circumference of the ring-shaped insertion groove and limiting a rotating radius of the first projection so that a rotary angle of the trajectory correcting unit can be limited.

In the two or more polygonal cams of the trajectory correcting unit, one surface among the plurality of surfaces may be configured to have the same level as a surface of an adjacent polygonal cam.

rightward leftward, the stopper 130 is separated from the ring-shaped insertion groove 128 placed at a right side of the trajectory correcting unit 120 of FIG. 6, and then the rotary shaft 121 of the trajectory correcting unit 120 is moved rightward leftward as shown in FIG. 10 so that the second polygonal cam 122b formed on the rotary shaft 121 can be placed at a position corresponding to the contact unit 112a of the base 112. Further, the stopper 130 is coupled again to the ring-shaped insertion groove 128 placed at a left side of the trajectory correcting unit 120 exposed to the outside of the gun barrel supporter 111, and thus the position of the trajectory correcting unit 120 is set.

In the state that the position of the trajectory correcting unit 120 is set as described above, if the rotary shaft 121 is rotated while gripping the grip 124, the angle between the gun barrel supporter 111 and the base 112 is adjusted by the second polygonal cam 122b to thereby correct the trajectory of the bullet having the trajectory A.

Although the same level reference surfaces of the first polygonal cam 122a and the second polygonal cam 122b are illustrated as seen on the front, the same level reference surfaces of the first polygonal cam 122a and the second polygonal cam 122b are in contact with the contact unit 112a while movement is performed between the first polygonal cam 122a and the second polygonal cam 122b as described above.

FIG. 11 is a cross-section view showing that a rotary shaft 121, 121′ is replaced in an apparatus for multi-correcting a trajectory according to an exemplary embodiment of the present invention.

As shown in FIG. 11, in the trajectory correcting unit 120 according to an exemplary embodiment of the present invention, since the rotary shaft 121 and the grip 124 are detachably assembled, it is possible to separate the rotary shaft 121 from the through hole 111a of the gun barrel supporter 111 in the state that the grip 124 is separated from the rotary shaft 121.

That is, in the state that the rotary shaft 121 is inserted in the through hole 111a of the gun barrel supporter 111, the grip 124 is detachably coupled to one end part of the rotary shaft 121. The grip 124 is separated from the rotary shaft 121, and then the rotary shaft 121 is pushed rightward in FIG. 11 and separated from the gun barrel supporter 111. Then, other rotary shafts 121′ respectively formed with polygonal cams 122′ for correcting the trajectory with regard to a bullet having a trajectory C or a bullet having a trajectory D different from the trajectory A or the trajectory B are inserted into the through hole 111a of the gun barrel supporter 111, and then the grip 124 is assembled, thereby being applicable to a firearm for a bullet having a different caliber.

Accordingly, in the apparatus for multi-correcting a trajectory according to an exemplary embodiment of the present invention, the rotary shaft formed with the polygonal cam 122 for correcting the trajectory corresponding to the caliber of the bullet of the firearm in which the dot sight or the optical sight is installed can be coupled and used to the gun barrel supporter 111, or the rotary shaft 121 can be moved leftward or the rightward for correcting the trajectory corresponding to the caliber, thereby enhancing equipment use efficiency.

Meanwhile, as shown in FIG. 11, the grip 124 detachably coupled to the rotary shaft 121 is assembled as a rod p penetrating the grip 124 is fastened to a fastening hole 121b formed at one end part of the rotary shaft 121 in the state that the grip 124 is assembled to surround one end part of the rotary shaft 121.

As apparent from the above description, there is provided an apparatus for multi-correcting a trajectory, in which one dot sight or optical sight can be mounted to firearms using bullets different in the trajectory or firearms different in a caliber from one another, thereby enhancing equipment use efficiency.

Also, there is provided an apparatus for multi-correcting a trajectory, in which a position of a rotary shaft can be prevented from being arbitrarily changed in the state that polygonal cams plurally formed in one rotary shaft are selected.

Further, there is provided an apparatus for multi-correcting a trajectory, in which the rotary shaft can be replaced to be easily applied and mounted to a firearm having an unprecedented new caliber.

While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An apparatus for multi-correcting a trajectory, the apparatus comprising a trajectory correcting unit in which a first polygonal cam comprising a plurality of surfaces different in distance from a rotary center is rotatably installed between a dot sight or an optical signal sight and a firearm to adjust an angle between an optical axis of the dot sight or optical sight and a gun barrel axis of the firearm,

wherein the trajectory correcting unit is installed to be movable in an axis direction, and coaxially provided with two or more the trajectory correcting unit includes a second polygonal cams cam provided at a different axial position of the trajectory correcting unit than the first polygonal cam, the first and second polygonal cams being operable to respectively set trajectory correcting angles corresponding to distances in accordance with calibers of a bullet and the kinds of bullet.

2. The apparatus according to claim 1, further comprising a gun barrel supporter formed with a through hole, in which the trajectory correcting unit is installed, and fastened to a firearm; and

a base formed with a contact unit to contact one of the two or more first or second polygonal cams, rotatably installed in the gun barrel supporter, and installed with the dot sight or the optical sight.

3. The apparatus according to claim 2, wherein the trajectory correcting unit limits an axial moving range by protrusions respectively placed at opposite end parts of an axial moving region and interfering with vicinity of the through hole.

4. The apparatus according to claim 2, further comprising a stopper that is coupled to one end part of the opposite end parts of the trajectory correcting unit selectively exposed to an outside of the gun barrel supporter and holds limits an axial moving position of the trajectory correcting unit with respect to the gun barrel supporter.

5. The apparatus according to claim 4, wherein the trajectory correcting unit is formed with includes ring-shaped insertion grooves at opposite end parts, respectively, in which an end part of the stopper is inserted.

6. The apparatus according to claim 5, wherein the stopper comprises a first projection formed at one side of an end part of the trajectory correcting unit to be inserted in the ring-shaped insertion groove, and the trajectory correcting unit comprises a second projection formed at one side of an inner circumference of the ring-shaped insertion groove and limiting a rotating radius of the first projection so that a rotary angle of the trajectory correcting unit can be limited.

7. The apparatus according to claim 1, wherein in the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam.

8. The apparatus according to claim 2, wherein the two or more polygonal cams of the trajectory correcting unit, first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam.

9. The apparatus according to claim 3, wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam.

10. The apparatus according to claim 4, wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam.

11. The apparatus according to claim 5, wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam.

12. The apparatus according to claim 6, wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam.

13. An apparatus for correcting a trajectory, comprising:

a trajectory correcting unit disposed between a sight and a firearm to adjust an angle between an optical axis of the sight and a barrel axis of the firearm, the trajectory correcting unit including a first adjustor operable to select a bullet caliber and a second adjustor operable to select a distance, wherein

the trajectory correcting unit is operable to select an angle between the sight and the barrel axis of the firearm based on the bullet caliber selected by the first adjustor or the distance selected by the second adjustor.

14. The apparatus according to claim 13, wherein the trajectory correcting unit includes a first plurality of selections corresponding to different bullet calibers and a second plurality of selections corresponding to different distances.

15. The apparatus according to claim 14, wherein

the trajectory correcting unit includes a first member having portions corresponding to each caliber and distance,

the portions corresponding to distances for respective calibers are arranged in respective paths,

the trajectory correcting unit includes a second member that contacts one of the portions of the first member to select the angle between the sight and the barrel axis of the firearm, and

the first adjustor is operable to select the path associated with the selected caliber by positioning the second member to correspond with the selected path.

16. The apparatus according to claim 15, wherein the second adjustor is operable to rotate to select the portion from the path of portions associated with the selected distance.

17. The apparatus according to claim 16, wherein

the trajectory correcting unit includes a polygonal cam,

the portions correspond to surfaces of polygons circumferential about the cam,

the respective paths correspond to respective sets of the circumferentially arranged polygonal surfaces,

the first adjustor is operable to axially select one of the sets of the circumferentially arranged polygonal surfaces, and

the second adjustor is operable to rotate to select one of the polygonal surfaces of the set of the circumferentially arranged polygonal surfaces selected by the first adjustor.

18. The apparatus according to claim 17, wherein in the respective sets of the circumferentially arranged polygonal surfaces, one surface of a first polygon of a first set of the polygonal surfaces has a same level as another surface of a second, adjacent set of the polygonal surfaces.

19. The apparatus according to claim 13, further comprising:

a gun barrel supporter coupled to the firearm, the gun barrel supporter including a space defined therein, the trajectory correcting unit being installed in the space; and

a base that includes a contact unit operable to contact a portion of the trajectory correcting unit determined by the first adjustor and the second adjustor.