KR101923396B1 - Archery arrows with improved straightness and fliging stability - Google Patents

Abstract

[0001] The present invention relates to a game arrow having improved straightness and flight safety, and more particularly, to a game arrow having a plurality of arrows attached to an arrow, the arrow having a double curved surface, The present invention relates to an arrow for improving the straightness and stability of flight by improving the straightness of the arrow through the flight stability.

Description

Archery arrows improved straightness and fliging stability with improved straightness and flight stability.

[0001] The present invention relates to an arrow for a game which has improved straightness and flight safety, more specifically, a plurality of arrowheads attached to an arrow are formed to have a double curved cross-section so that the unstable flying due to a vortex The present invention relates to a bow for a bow which is improved in straightness and stability of flight by improving the straightness of an arrow through such stability of flight while ensuring stable flight by stabilizing quickly.

An arrow is for shooting at the bow of a bow and consists of a shaft, an arrowhead, a vane, and a nock. At the front end of the shaft, an arrowhead is mounted, and at the end of the shaft, a pattern for holding the bow is mounted.

In particular, a conventional arrow fulcrum forms arrowheads and fringes on both ends of the shaft, and a plurality of arrow fulcrums are integrally formed on the shaft shaft surface by adhering to the front portion of the shaft.

The arrow, which is constructed as above, is generally flying toward the target with a parabolic arrow, which leaves the protest of the bow. At this time, the arrow flapping around the center of gravity of the arrow swings back and forth.

That is, an arrow does not fly straight to the target, but the fish swirls like a swim. This phenomenon is called the Archer's paradox phenomenon, which causes the spin vanes to induce proper air flow and reduce the air resistance, thereby causing the arrow to fly straight.

In addition, the arrows fly while rotating by the air resistance on the feathers of the arrows, and the rotating arrows fly more steadily than the non-rotating arrows. That is, the arrow is stably moved by giving a slight pitch to the direction of the collar attached to the shaft, and this effect is called a gyro effect.

[0004] In the conventional technology of the arrow, the arrow 10 of Patent Registration No. 13-13,544 (registered on May 20, 2014)

The point 120 is coupled to the front end and the diameter of the shaft 110 to which the knock 140 is coupled to the rear end is reduced from the front end to the rear end to move the center of gravity in the forward direction,

The shaft 110 is divided into three parts and the front end a of the shaft is connected to the point 120 and the diameter of the shaft 110 is larger than that of the other part. And the rear end c of the shaft extends from the shaft stop b and is constantly formed with the same diameter as the end of the shaft stop b. do.

In addition, the arrows are used to prevent the generation of the resistance to the penetration of the tape 15 by winding the tape 15 around the front portion of the arrow 14 to prevent the occurrence of a sharp resistance during the arrow flying.

Particularly, through the attachment of the tape as described above, the end portion of the arrow collar and the attachment portion of the shaft can be kept attached without lifting.

However, when the tape is attached to prevent the penetration resistance as described above, problems such as the weight of the arrow and the psychological weight of the user are caused.

In addition, the arrowhead portion attached to the shaft has a rounded shape opposite to the shaft, so that it is attached to the surface of the shaft using a double-sided tape or the like, .

In order to solve the above-mentioned problems, according to the prior art, the patent document 10-10-0132203 (open date: December 17, 2010)

A vertical frame 114 connecting the upper side and the lower side of the frame and having a plurality of spaced apart portions in the longitudinal direction of the frame, A wing 110 formed of a thin film 112 formed in an empty space defined by longitudinal ribs; And a bonding part (120) located at a lower end of the wing part and attached to the shaft.

However, the arrowheads having the above-described structure were also generated due to the vortex caused by the thin film formed between the longitudinal rods during the flight, resulting in unstable flight and unstable phenomena.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an airfoil which is formed by the vortex phenomenon of air formed inside an arrow- Which can improve the flight stability, straightness, and hit ratio of the arrow by solving the problems such as the tremor and the trembling of the arrow, thereby improving the straightness and flight stability of the improved form.

In addition, the shape of the arrowhead attached to the shaft is formed in the shape of a curved line having the same shape and direction as the shaft, thereby improving the adhesion of the shaft and improving the flying stability of the arrow without taping Which is improved in straightness and flight stability of the form.

It is an object of the present invention to provide an arrow in which arrowheads and patterns are formed at both ends of a shaft and a plurality of arrowheads are bonded to the surface of the shaft at a front portion of the shaft,

The arrow feathers have a first bent portion 20 bent in a direction opposite to a bending direction of the body 10 at one side or a central portion of a body 10 having a bent half shape in one direction, And the second bend portion 30 having the same radius as that of the shaft portion 200 is integrally formed.

The first bent portion 20 is formed on the body 10 in one or more than one.

The arrow feathers 100 are in the form of a film.

The first bent portion 20 may be formed in various forms depending on the length, width, and height of the arrow feathers.

As described above, according to the present invention, an arrow for a game, which has improved straightness and flight stability, is capable of preventing a swing of an arrow due to a vortex generated on the inner side of an arrow feather It is possible to provide rapid flight stability by preventing swinging of the arrow through the vortex generated by the first bent portion curved in the direction opposite to the direction of the arrow, thereby remarkably improving the hit rate, have.

In addition, according to the present invention, the arrow for a game, which has improved straightness and flight stability, is formed in a curved shape having a radius equal to that of the shaft, thereby preventing lifting in the process of attaching the shaft to the shaft The adhesion can be improved.

1 is a perspective view of an improved bow according to the present invention attached to a shaft.
2 is a sectional view taken along the line AA in Fig.
3 is a partially enlarged cross-sectional view of another embodiment of an arrow feather in an improved game arrow according to the present invention.
4 is a partially enlarged cross-sectional view of another embodiment of an arrow feather in an improved playing arrow according to the present invention.
5 is a view for explaining an action of an arrow feather in an improved game arrow according to an embodiment of the present invention.
FIGS. 6 and 7 are views for explaining the effect of an arrow feather in an improved game arrow according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It does not mean anything.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator It should be noted that the definitions of these terms should be made on the basis of the contents throughout this specification.

1 is a perspective view of an improved arrow according to the present invention in which an arrow collar is attached to a shaft, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a cross- Fig. 4 is a partially enlarged cross-sectional view of another embodiment of an arrow feather in an improved competition arrow according to the present invention, and Fig. 5 is a view for explaining an action of an arrow feather in an improved game arrow according to an embodiment of the present invention. FIGS. 6 and 7 are views for explaining the effect of an arrow feather in an improved game arrow according to an embodiment of the present invention.

As shown in the drawings, an arrow feather (hereinafter, referred to as an arrow feather) 100 of a game arrow having improved straightness and flight stability according to the present invention includes a body 10 having an approximately half- A first bent portion 20 curved in a direction opposite to the bending direction of the body 10 and a second bend portion 30 bent in the same radius as the shaft portion 200 to which the arrow feathers are attached are integrally formed.

Arrows may be integrally formed by forming arrowheads and fringes on both ends of the shaft and a plurality of arrowheads attached to the shaft shaft surface at the front portion of the shaft.

The arrow feathers have a first bent portion 20 bent in a direction opposite to a bending direction of the body 10 at one side or a central portion of a body 10 having a bent half shape in one direction, And the second bent portion 30 having the same radius as that of the shaft portion 200 is integrally formed.

In addition, the first bend section 20 is formed in the body 10 as one or a plurality of bend sections.

In addition, the material of the arrow feathers 100 is not limited, and may be a film form that can be formed.

The first bend section 20 may be formed in various positions in the range of 1/20 to 12/20 of the arrow mark width, To ensure optimal flight stability.

Particularly, the second bent portion 30 is formed in the same curved surface as the surface curved surface of the shaft shaft 200 to which the arrow feathers 100 are attached, thereby attaching the tape to the attaching portions of the conventional arrow feathers 100 and the shaft shaft 200 And it is possible to prevent the user from feeling the psychological weight of the user and by the complete contact between the shaft 200 and the second bend 30 to occur at the connecting portion between the shaft 200 and the arrow feathers 100 during the flying of the arrow Can be minimized and the reduction of the initial resistance can reduce the central resistance generated in the center portion of the arrow collar 100 and improve the flight stability and straightness according to the stable air flow, .

The second bend section 30 may be bent in the same direction as the bending direction of the body 10 as shown in Figs. 1 and 2, And may be bent in a direction opposite to the bending direction of the base 10.

The first bend section 20 has a structure in which the shaft 20 is rotated in one direction by the rounded body 10 in one side and the shaft is shaken during the flight due to the vortex generated in the body 10 during the flight The first bend portion 20 bent in a direction opposite to the round direction of the body 10 is formed on the body 10 so that the bending portion of the body 10 can be prevented from being damaged by the vortex generated inside the body 10. [ The vortex generated by the first bend portion 20 is canceled by the vortex generated by the vortex generated in the body 10 by the vortex generated in the first bend portion 20, And at the same time enables stable flight.

The first bend section 20 may be formed in various positions in the range of 1/20 to 12/20 of the arrow mark width, Thereby minimizing disturbance of the vortex flow formed inside the body 10 and forming an auxiliary vortex on the outside.

That is, the first bend section 20 bent in a direction opposite to the bending direction of the body 10 generates vortexes having different velocities on the inside and outside of the body 10, And the pressure of the vortex portion at a high speed is lowered by the principle of Bernoulli as the vortex of the outer vortex escapes at a relatively low speed, 300) is formed to be smaller than the size of the vortex generated in the conventional arrowhead to prevent the arrow from flying during the flight and the size of the vortex reduced to reduce the air resistance value, Increases flight speed and provides high flight stability.
More specifically, FIG. 6 is a simulation of the flow of fluid to an arrow-shaped arrow-shaped arrow-free bending section, and FIG. 7 is a cross- The flow of the fluid is simulated with an arrow feathered arrow.
As shown in FIG. 6, when the first curved portion is not formed on the arrow feathers and a single curved surface is formed, it can be seen that the rear portion (a) of the arrow feathers is formed to have a large width of vortex, It can be a cause of increased tremor when arrows fly by being large. In Fig. 6, the yellow area on the outer surface of the shaft shows a region having a large vortex intensity.
7, a first vortex is formed along the inner side of the arrow feathers by the use of the arrow feathers formed with the first bow 20, and by the first bow 20 on the outer side of the arrow feathers A second vortex (see b) is formed and the first vortex and the second vortex in the rear portion 300 (see a) interfere with each other and collide with each other or the wand is broken and the strength of the vortex is weakened, The flickering of the arrow can be significantly improved by the strength of the vortex when flying. In FIG. 7, the area of the vortex is narrower than the area of the vortex shown in FIG.

Also, the attached state is maintained without lifting of the adhesive portion by the second bent portion 30 curved in the same radius as the shaft block 200.

<Conventional Arrowhead> <Arrowhead of the Present Invention>

<Comparison of changes of vortex generation according to flexion>

As shown in the drawing, the conventional arrow collar 100 is formed by bending the body 110 to induce the arrow to rotate during flight, thereby improving the straightness of flight. However, the airflow passing through the curved inner portion of the arrow- The straightness of the arrow is not uniform due to the swinging due to the vortex during the flight of the arrow, and the same is not ensured due to the speed of flight and factors of the surrounding environment.

The present applicant has found that the first bent portion 20 curved in a direction opposite to the bending direction of the body 10 is formed on one side of the bending portion of the arrow 10, And improved straightness.

That is, as shown in the drawing, air vapors are generated in the process of passing the arrow feathers 100 through the inside of the curved body 10 while air is flying, and at the same time, A vortex generated by the bent first bending portion 20 in the direction opposite to the bending direction is generated at the outer side of the body 10 so that the vibration of the bending shaft due to the vortex generated in the arrow vane 100 The shaft which is rotated by the vortex generated by the first bent portion 20 outside the arrow feathers is characterized in that it improves the flight stability and the straightness of the swiftness and significantly improves the hit ratio.

In addition, the second bent portion 30 attached to the shaft is formed in a curved shape having the same radius as the shaft, thereby preventing lifting of the shaft and attaching the shaft to the shaft.

4 is a partially enlarged cross-sectional view of another embodiment of an arrow feather in an improved game arrow according to the present invention.

That is, as shown in the figure, a plurality of first bent portions 20 and 20 'are formed on the upper and lower portions of the body 10 to provide double vortices against vortex generated inside the body 10, The strength of the vortex generated by the bent portion 20 is strengthened, thereby providing quick flight stability and straightness of the shaft.

The first bend portions 20 and 20 'described above may be formed at various positions of the body 10 in addition to the illustrated positions.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is self-evident to fall within the scope of the claims.

100: Arrowhead 10: Body
20, 20 ': first bend portion 30: second bend portion
200: Shaft
300: rear portion

Claims (4)

In which arrowheads and fingers are provided at both ends of the shaft shaft 200 and a plurality of arrowheads are bonded to the front surface of the shaft shaft 200 on the surface of the shaft shaft 200,
The arrow-
A body 10 having a bent half-shape in one direction;
A first bent portion 20 bent at one side or a central portion of the body 10 in a direction opposite to the bending direction of the body 10; And
And a second bend (30) curved in the same radius as the shaft (200)
At this time, first and second vortices of first and second speeds are generated at the inner side A of the body 10 and the outer side B of the body 10 by the first bend portion 20 And,
The first vortex of the inner side (A) escapes to the rear of the shaft (200) at the first speed,
The second vortex of the outer side (B) escapes to the rear of the shaft (200) at the second speed which is slower than the first speed,
As can be seen from the Bernoulli theorem, as the velocity of the fluid increases, the pressure is lowered, so that it is lowered to different pressures of the first and second vortices,
The size of the vortex generated in the rear portion 300 of the arrow will be smaller than the size of the vortex generated in the conventional arrow without the first bend,
It prevents the arrow from shaking during the flight of the arrow and increases the flight speed of the arrow by decreasing the air resistance value relatively by the size of the reduced vortex,
And the second bending portion (30) maintains the attached state without lifting the bonded portion
With improved straightness and flight stability.
The method according to claim 1,
The first bent portion 20 is formed in the body 10 in a plurality
With improved straightness and flight stability.
The method according to claim 1,
The arrow feathers (100) are in the form of films that can be formed
With improved straightness and flight stability.
The method according to claim 1,
The first bent portion 20 may be formed at a position in the range of 1/20 to 12/20 of the width of the body 10
With improved straightness and flight stability.

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