KR20150032021A

KR20150032021A - Golf club

Info

Publication number: KR20150032021A
Application number: KR20130111987A
Authority: KR
Inventors: 박흥식
Original assignee: 주식회사 천봉아이엔에스
Priority date: 2013-09-17
Filing date: 2013-09-17
Publication date: 2015-03-25

Abstract

The present invention relates to a golf club comprising: a head; and a shaft connected to the head, wherein the head comprises a striking surface formed on a front surface; a curved surface formed on an upper surface; and a plurality of turbulence generating grooves concavely formed over the entire curved surface. According to the present invention, reduction of swing speed is prevented by minimizing resistance applied to the head when striking a golf ball while swing. Accordingly, striking force that the head strikes the golf ball while swing is increased so that the present invention makes distance of the flight of the ball longer.

Description

Golf club {GOLF CLUB}

The present invention relates to golf clubs.

In general, a golf game is a game in which a golf ball is pitched into a hole with a golf ball stopped at a stadium where a plurality of holes are provided, and a person with a small number of strokes before entering the hole wins. The game is played from the first hole to the 18th hole by playing golf balls in accordance with the rules, and the golfer selects the golf club according to the distance to move the golf ball. A golf club is composed of a driver for driving a golf ball a long distance, an iron for playing a golf ball on a green in a fair way, a putter for accurately hitting the golf ball on the green, and putters.

1 is a perspective view showing an example of a conventional golf club. 1, the conventional golf club has a head 10, a hosel 20 provided on one side of the head 10 to mitigate the impact, a shaft 20 connected to the hosel 20, a shaft 30 and a grip 40 provided at one end of the shaft 30. The head 10 is provided with a flat striking face 11 on which a golf ball is struck on the front face. The upper face 12 and the lower face 13 of the head 10 are curved, (14) is a connecting curved surface to which the curved surfaces of the upper and lower surfaces are connected. The striking surface 11 of the head 10 is inclined.

The golfer swings the golf club while holding the grip 40 with both hands, and hits the golf ball with the head 10. The swing acceleration of the head 10 at the time when the golf ball comes into contact with the golf ball head 10 when the golfer swings the golf ball by swinging the golf ball to strike the golf ball to fly away (to take a long shot) It should be maximum.

However, since the upper and lower surfaces 12 and 13 of the conventional golf club head 10 are formed as curved surfaces, when the golfer swings the golf club, the air flows along the surface of the head 10 at the beginning of the swing, The speed of the head 10 gradually increases as the golf ball 10 approaches the golf ball and the flow of air is peeled from the midpoint between the upper surface 12 and the lower surface 13 of the head 10, The flow rate of the air is suddenly decreased while the flow direction of the air is changed and a vortex is generated on the rear surface of the head 10 to decrease the pressure on the rear surface 14 of the head 10 . That is, at the time when the head 10 strikes the golf ball, the pressure acting on the striking surface 11 of the head 10 becomes large and the pressure on the rear surface 14 side of the head 10 becomes low, So that the golf ball can not fly away when the head 10 hits the golf ball.

Particularly, as the development of the material of the golf club head 10 in recent years, the size of the head 10 becomes larger as the head 10 becomes lighter and the strength becomes larger, and the probability of a miss shot upon swing is decreased. The shape resistance of the head 10 and the air resistance are increased and the impact force on the golf ball is reduced.

In Korean Patent Laid-Open Publication No. 2003-0089927 (published on Nov. 28, 2003) (hereinafter referred to as Prior Art 1), a foil-type air guide is fastened to the upper surface of the head by screws, A flow path through which air flows is formed. However, in the prior art 1, an air guide is provided on the upper surface of the head to form a flow path between the upper surface and the air guide to allow air to flow through the flow path during swinging of the golf club so that pressure acts on the lower surface of the head. Not only the flow separation occurs on the upper surface but also the air resistance is generated by the air guide to reduce the swing speed of the head.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a golf club that minimizes a resistance force acting on a head at the time of hitting a golf ball during a swing, thereby preventing the swing speed from being reduced.

In order to achieve the object of the present invention as described above, And a shaft connected to the head, wherein the head is provided with a striking surface formed on the front surface, a curved surface formed on the upper surface, and a plurality of turbulence generating recesses formed concavely over the curved surface.

It is preferable that the turbulence generating grooves are the same in size and arranged at a uniform interval from each other.

It is preferable that the turbulent flow generating groove has a uniform depth.

The turbulent flow generating grooves are preferably formed in a hexagonal shape.

Further, in order to achieve the object of the present invention, And a shaft connected to the head, wherein the head is provided with a striking surface formed on the front surface, a curved surface formed on the upper surface, and a plurality of turbulent protrusions formed convexly over the curved surface.

It is preferable that the turbulent flow protrusions are the same in size and arranged at regular intervals.

The turbulent flow protrusion preferably has a uniform height.

The turbulent flow protrusion is preferably formed in a hexagonal shape.

In the golf club according to the present invention, the upper surface of the head is formed as a curved surface provided with turbulence generating grooves or protrusions so that the air flowing along the surface of the head during swing is turbulently generated by the turbulence generating grooves or protrusions, It is prevented that vortices are generated on the rear surface of the head because the mixing is actively performed to change the flow of air to occur at a distance from the rear surface of the head. That is, it is possible to prevent a vortex from being generated at the back surface of the head at the time of hitting the golf ball in which the swing speed of the head becomes the maximum, so that the resistance acting on the back surface of the head is minimized, do. This increases the striking force of the head striking the golf ball, thereby distancing the golf ball from the golf ball.

In addition, not only the turbulence generating grooves are provided over the entire upper surface of the head, but also the depths of the turbulence generating grooves are uniform, so that the fluctuation width of the turbulence is constant, thereby minimizing the flow resistance of the air. In addition, when the turbulence generating groove is hexagonal, there are many sides and corners, so turbulence is generated to induce the flow of air to be changed far from the rear surface of the head. That is, vortices are prevented from being generated directly from the rear surface of the head.

1 is a perspective view showing an example of a conventional golf club,
2 is a perspective view showing a first embodiment of a golf club according to the present invention,
3 is a side view of a head constituting a first embodiment of a golf club according to the present invention,
4 is a plan view of a head constituting a first embodiment of a golf club according to the present invention,
5 is a plan view showing another embodiment of the turbulence generating groove constituting the first embodiment of the golf club according to the present invention,
6 is a perspective view showing a second embodiment of a golf club according to the present invention,
7 is a side view of a head constituting a golf club according to a second embodiment of the present invention,
8 is a plan view of a head constituting a golf club according to a second embodiment of the present invention,
9 is a perspective view showing another embodiment of the turbulence generating projection according to the second embodiment of the golf club according to the present invention.

Hereinafter, an embodiment of a golf club according to the present invention will be described with reference to the accompanying drawings.

2 is a perspective view showing a first embodiment of a golf club according to the present invention. 3 is a side view of a head constituting a first embodiment of a golf club according to the present invention. 4 is a plan view of a head constituting a first embodiment of a golf club according to the present invention.

As shown in Figs. 2, 3 and 4, the first embodiment of the golf club according to the present invention comprises a head 110; And a shaft 120 connected to the head 110. The head 110 includes a striking surface 111 formed on the front surface, a curved surface 112 formed on the top surface, and a plurality of turbulent Generating grooves < RTI ID = 0.0 > 113. A hosel 130 is provided between the head 110 and the shaft 120 and a grip 140 is provided at one end of the shaft 120.

The striking surface 111 of the head 110 is preferably flat or slightly curved. The striking surface 111 is preferably an inclined surface. It is preferable that protruding lines (not shown) are formed linearly in the horizontal direction on the striking surface 111 or groove lines (not shown) are formed in the horizontal direction.

The top surface of the head 110 has a shape in which a part of the circular shape is cut in a linear shape, and the top surface also has a convex curved surface 112. The cut surface is the striking surface 111, which is the front surface of the head 110. It is preferable that the plurality of turbulent flow generating grooves 113 formed on the curved surface 112 of the head 110 have a uniform depth. It is preferable that the turbulence generating grooves 113 have the same size and are arranged at regular intervals from each other. The turbulent flow generating grooves 113 are preferably formed in a hexagonal shape. Further, the turbulence generating grooves 113 may be formed in a rhombic shape as shown in Fig. In addition, the turbulent flow generating grooves 113 may have various shapes such as a square shape, a rectangular shape, and a circular shape. The number of Reynolds numbers of the upper surface of the head 110, that is, the curved surface provided with the plurality of turbulent flow generating grooves 113, is preferably about 40,000 to 400,000.

It is preferable that the lower surface of the head 110 is formed as a curved surface having a larger radius of curvature than the curved surface of the upper surface, and the end portion is formed as a flat surface.

The rear surface 115 of the head 110 has a protruding shape in which a curved surface 112 as an upper surface and a curved surface 114 as a lower surface are connected to each other.

The material of the head 110 may be wood, iron, a stainless alloy, a titanium alloy, or a composite material.

6 is a perspective view showing a second embodiment of a golf club according to the present invention. 7 is a side view of a head constituting a second embodiment of a golf club according to the present invention. 8 is a plan view of a head constituting a second embodiment of a golf club according to the present invention.

6, 7 and 8, a second embodiment of a golf club according to the present invention comprises a head 110; And a shaft 120 connected to the head 110. The head 110 includes a striking surface 111 formed on the front surface, a curved surface 112 formed on the upper surface, a plurality of turbulent Generating protrusions 116. A hosel 130 is provided between the head 110 and the shaft 120 and a grip 140 is provided at one end of the shaft 120.

The striking surface 111 of the head 110 is preferably flat or slightly curved. The striking surface 111 is preferably an inclined surface. It is preferable that protruding lines (not shown) are formed in the horizontal direction on the striking surface 111 or groove lines (not shown) are formed in the horizontal direction.

The upper surface of the head 110 is a shape in which a part of the circular shape is cut in a linear shape, and the upper surface is also a convex curved surface. The cut surface is the striking surface 111, which is the front surface of the head 110. The plurality of turbulence generating protrusions 116 formed on the curved surface 112 as the upper surface of the head 110 preferably have a uniform height and when the height of the turbulence generating protrusions 116 is uniform, 116 are curved. It is preferable that the turbulence generating protrusions 116 are the same in size and arranged at regular intervals from each other. The turbulence generating protrusions 116 are preferably formed in a hexagonal shape. In addition, the turbulence generating protrusions 116 may be formed in various shapes such as a rhombus shape having a uniform height, a square shape, a rectangular shape, and a circular shape. The Reynolds number of the top surface of the head 110, that is, the curved surface provided with the plurality of turbulent flow protrusions 116, is preferably about 40,000 to 400,000.

In another embodiment of the turbulent flow protrusion 116, as shown in FIG. 9, the turbulence generating protrusion 116 may be formed in the shape of a hexagonal horn. In this case, the upper surface of the turbulent flow protrusion 116 is not a curved surface but a sharp protrusion. If the turbulence generating protrusion 116 is formed in the shape of a hexagonal horn, turbulence can be more effectively generated because the tip is sharp.

It is preferable that the lower surface of the head 110 is formed of a curved surface 114 having a larger radius of curvature than the curved surface of the upper surface,

Hereinafter, the operation and effect of the golf club according to the present invention will be described.

The golfer swings the golf club so that the golf club head 110 strikes the golf ball with the grip 140 of the golf club held by both hands and hits the golf ball with the head 110. [ When a golfer swings a golf club, it swings the golf club backward in the direction of advancing the golf ball, and then swings the golf club forward to strike a golf ball located at a certain distance in front of the golfer. At this time, the swing speed of the golf club head 110 becomes maximum at the time of hitting the golf ball, and the swing speed of the professional golf golfer is about 100 km / h to 150 km / h.

Since the upper surface of the head 110 of the golf club according to the present invention is formed by the curved surface 112 having the turbulent flow generating grooves 113, air flowing along the surface of the head 110 during swing is formed in the turbulent flow generating grooves 113 The turbulence is generated due to the turbulence and the air is actively mixed so that the flow of the air is changed at a distance from the rear surface of the head 110 to prevent vortices from being generated on the rear surface of the head 110 do. That is, the swing speed of the head 110 is maximized, vortices are prevented from being generated at the back surface of the head 110 at the time of hitting the golf ball, and the resistance acting on the back surface of the head 110 is minimized, Thereby minimizing the reduction of the swing speed of the swing arm 110. As a result, the hitting force of the head 110 striking the golf ball is increased, and the distance of flying the golf ball is distant.

Since the turbulence generating grooves 113 are provided over the entire upper surface of the head 110 as well as the depths of the turbulence generating grooves 113 are uniform, the variation width of the turbulent flow is constant, do. In addition, when the turbulence generating groove 113 is hexagonal, the number of sides and corners becomes large, so that turbulence is generated to induce the flow of air at a position far from the rear surface of the head 110. That is, vortices are prevented from being generated directly from the rear surface of the head 110.

Since the upper surface of the head 110 is formed by the curved surface 112 having the turbulent flow generating protrusions 116, the air flowing along the surface of the head 110 during the swing is generated as a turbulent flow The turbulence is generated by the protrusions 116 and the air is actively mixed due to the turbulence, so that the flow of the air is changed at a distance from the rear surface of the head 110, Is prevented. It is possible to prevent a vortex from being generated on the rear surface of the head 110 at the time when the head 110 strikes the golf ball, thereby minimizing the resistance acting on the back surface of the head 110 and reducing the swing speed of the head 110 . As a result, the hitting force of the head 110 striking the golf ball is increased, and the distance of flying the golf ball is distant.

Since the height of the turbulence generating protrusions 116 is made uniform as well as the turbulence generating protrusions 116 are provided over the entire upper surface of the head 110, the variation width of the turbulence is made constant, do. Further, when the turbulence generating protrusion 116 is hexagonal, the number of edges and corners becomes large, so that the turbulence is generated to induce the flow of air to be changed far from the rear surface of the head 110.

110; Head 111; Striking face
112; Turbulent flow grooves 116; Turbulent protrusion
120; shaft

Claims

head;
And a shaft connected to the head,
Wherein the head comprises a striking surface formed on the front surface, a curved surface formed on the upper surface, and a plurality of turbulence generating recesses formed concavely over the curved surface.

The golf club according to claim 1, wherein the turbulence generating grooves are arranged at equal intervals and at equal intervals.

The golf club of claim 1, wherein the turbulence generating groove has a uniform depth.

The golf club according to claim 1, wherein the turbulence generating groove is formed in a hexagonal shape.

head;
And a shaft connected to the head,
Wherein the head includes a striking surface formed on the front surface, a curved surface formed on the upper surface, and a plurality of turbulent protrusions formed convexly over the curved surface.

6. The golf club of claim 5, wherein the turbulence generating protrusions are arranged at equal intervals and at equal intervals.

6. The golf club of claim 5, wherein the turbulence generating protrusion has a uniform height.

[6] The golf club of claim 5, wherein the turbulence generating protrusion is formed in a hexagonal shape.