KR101691510B1 - Golf club for bunker - Google Patents

Abstract

The present invention relates to a golf club for a bunker comprising a club head hitting a golf ball, a shaft having one end connected to the club head, and a grip formed to grip the golfer on the other end side of the shaft, A heel portion connected to the striking surface and the shaft, a toe portion provided at an end of the striking surface, and a sole portion formed below the striking surface and contacting the ground, wherein the sole portion has a plurality of grooves formed at regular intervals rearward from the striking surface The present invention relates to a golf club for a bunker including a first guide portion.

Description

Golf club for bunker {GOLF CLUB FOR BUNKER}

The present invention relates to a golf club for a bunker, and more particularly to a golf club for a bunker which can facilitate a swing in a bunker of a golf course.

In general, golf is a game in which a ball stuck on a course is hit by a golf club and put in a designated hole and competes with the number of batters until that time. Golf is an athletic event in which a golfer hits a golf ball placed on the ground by a swing swinging a golf club, and lands and puts the golf ball to the target spot, Green, along the course. In such a golf game, a golf ball, which is basically a golf ball, and a golf club, which is used to play a golf ball, are provided. Types of golf clubs include Wooden Club, Driver, Brassie, Spoon, Buffy, Cleek, and Iron Golf. There are clubs (Iron Club: long irons: 1,2,3 irons, medium irons: 4,5,6 irons, short irons: 7,8,9 irons) and putters. Pitching wedges made for shot, and sand wedges for bunker shots.

On the golf course, bunkers are divided into fairway bunkers on the fairway and green bunkers around the greens. Bunkers around the greens are generally formed in jars or wells, and generally have a very high jaw. The bunker shot in the green bunker does not directly hit the golf ball on the sand, but the sand wedge and other loft clubs hit the back sand of the golf ball and move the golf ball over the green. At this time, if the sand is strongly hit, the club head must maintain the speed, so that the golf ball can easily escape the bunker.

However, even if a beginner golfer or a female golfer strikes the bunker sand strongly because the swing speed is not fast, the swing speed is slowed due to the resistance of the sand, and the golf ball can not escape from the bunker in many cases.

A problem to be solved by the present invention is to provide a golf club for a bunker which can maintain the swing speed by reducing the resistance of the sand by forming a guide portion for allowing the sand to escape from the sole of the club head so as to escape the golf ball from the bunker have.

In order to solve the above problems, the present invention provides a club head for hitting a golf ball, A shaft having one end connected to the club head; And a grip formed on the other end side of the shaft so as to grip a golfer, wherein the club head includes a striking surface on which the golf ball is struck, a heel portion where the striking surface and the shaft are connected, a toe portion on the end of the striking surface, And a first guide portion formed at a lower portion of the striking surface and contacting the ground, wherein the sole portion includes a plurality of grooves formed at a predetermined distance rearward from the striking surface.

The striking surface may further include a second guide portion extending from a plurality of grooves of the first guide portion in an area adjacent to the sole portion.

Wherein the shaft has a first carbon fiber layer of a pipe-pipe shape having a larger diameter from the bottom toward the top and hollow inside; A second carbon fiber layer having a plurality of carbon fiber blocks surrounding the first carbon fiber layer; And a third carbon fiber layer surrounding the second carbon fiber layer. The third carbon fiber layer may include a Korean paper fiber layer or a hemp fiber layer formed on the outer circumferential surface of the third carbon fiber layer in the form of a mesh net.

Wherein the golf club for a bunker is formed between the third carbon fiber layer and the hank of the fibrous layer or hemp fiber layer or formed on the outside of the hinge fiber layer or hemp fiber layer and is formed in a region adjacent to the area where the grip is formed, .

Wherein the carbon fiber block has a first curvature surface formed to have a radius of curvature; A second curvature surface having a radius of curvature equal to that of the first curvature surface and a length of arc less than a length of the arc of the first curvature surface; A first partition wall connected to one end of the first curvature surface and the second curvature surface, respectively; A second diaphragm connected to the other end of the first and second curvature surfaces, respectively; A line-shaped protrusion protruding outward from the first bank; And a line-shaped groove formed in the second bank, wherein the adjacent carbon fiber blocks are inserted in the groove and the protrusion is inserted into the groove.

The carbon fiber block may further include a shape retaining portion formed in the inner space surrounded by the first curvature surface, the second curvature surface, the first partition and the second partition to maintain the shape of the inner space.

Wherein the shape retaining portion comprises: a support shaft formed at the center of the inner space; And first to fourth supporting pieces extending from the outer surface of the supporting shaft to the first curvature surface, the second curvature surface, the first partition and the second partition, respectively.

The golf club for a bunker according to an embodiment of the present invention includes a first guide portion formed on the sole portion of the club head and a second guide portion formed on the striking surface to swing the sand in the bunker, The swing speed can be maintained. Thereby, there is an effect that a novice golfer or women can more easily perform the bunker shot.

In addition, the golf club for a bunker according to an embodiment of the present invention includes a shaft including carbon fibers and a hanami fiber layer covering the shaft, thereby mitigating the impact on the golfer and improving the striking speed and swing speed.

1 is a perspective view schematically showing a golf club according to an embodiment of the present invention;
Fig. 2 is a front view showing the club head shown in Fig. 1; Fig.
Fig. 3 is a perspective view showing the sole portion of the club head shown in Fig. 1; Fig.
FIG. 4 is a perspective view cut along the line I-I 'and II-II' of FIG. 1; FIG.
5 is a cross-sectional view specifically showing a surface taken along the line I-I ';
FIG. 6 is a perspective view specifically showing the carbon fiber block shown in FIG. 5. FIG.
7 to 9 are perspective views showing another embodiment of the carbon fiber block.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations can be applied and various embodiments can be made. It is to be understood that the following description covers all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In the following description, the terms first, second, and the like are used to describe various components and are not limited to their own meaning, and are used only for the purpose of distinguishing one component from another component.

Like reference numerals used throughout the specification denote like elements.

As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms " comprising, "" comprising, "or" having ", and the like are intended to designate the presence of stated features, integers, And should not be construed to preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 9 attached herewith.

1 is a perspective view schematically showing a golf club according to an embodiment of the present invention.

Referring to FIG. 1, a golf club 10 according to an embodiment of the present invention includes a club head 200, a shaft 20, a grip 25, a hard tissue layer 60, and a shock-absorbing film 50 .

Specifically, the club head 200 is coupled to the lower end of the shaft 20 to a portion that strikes the golf ball.

The grip 25 is a portion gripped by the golfer and is provided on the outer peripheral surface of the upper end of the shaft 20.

The shaft 20 is divided into a grip region 30 and a non-grip region 40 excluding the grip region 30. [ The grip area 30 is an area where the golfer's hand is easily gripped and the grip 25 that facilitates swing is mounted. In the non-grip region 40 of the shaft 20, the impact-relieving film 50 surrounding the outer surface of the shaft 20 is positioned. The impact-relieving film 50 is positioned adjacent to the grip region 30 and tightly winds the shaft 20 through a separate adhesive or the like. The description of the shaft 20 will be given again with reference to Figs. 4 to 9. Fig.

The impact-relieving film 50 is made of titanium or a titanium alloy. Generally, titanium has relatively less strength than the shaft 20 having high strength but has strong corrosion resistance. The impact-relieving film 50 made of a metal material having such a property can serve to buffer or alleviate the impact transmitted to the shaft 20 through the club head 200 during swing.

More specifically, in order to send a golf ball to a golfer's desired position, distance and the like are important, but among other things, a strong impact must be applied to the golf ball when swinging. For this purpose, the shaft 20 is manufactured using a high-strength material, among other things. However, with such an advantage, a shock transmitted to the shaft 20 is transmitted to the golfer as it is, resulting in a physical shock to the golfer. In particular, if you hit the sand in the bunker around the green, the physical impact doubles.

  In order to minimize such a problem, in the present invention, by winding the shaft 20 with the impact-relieving film 50 including titanium or the like having a strong corrosion resistance and a relatively low strength, physical shock to the golfer can be minimized have. Particularly, since the impact-reducing film 50 surrounds the outside of the shaft 20 and is positioned adjacent to the grip that the golfer's hand touches directly, the impact applied to the golfer can be further minimized. The shock-absorbing film 50 may be separately manufactured and detachably attached to the outer side of the shaft 20, or may be formed on the surface of the shaft 20 through a plating process.

The shaft 20 is in the shape of a pipe having a hollow cylindrical lowered bar-like light shape, that is, a diameter increasing from the lower part toward the upper part, and the inner structure thereof is composed of a multilayer carbon fiber layer. The core paper layer 60 is formed on the outer peripheral surface of the shaft 20. The hosiery fibrous layer 60 is formed by weaving the hosiery yarn in the form of a mesh net. The hosiery fibrous layer 60 is formed so as to surround the outer circumferential surface of the shaft 20 and absorbs impact transmitted to the shaft 20. At this time, the mesh network increases the mesh size so that the impact is smoothly absorbed.

The Korean paper fiber layer 60 forms a resin on a fabric formed by forming a mesh of a mesh paper, and surrounds the outer circumferential surface of the shaft 20, and then applies heat to adhere thereto. Accordingly, the hinged fibrous layer 60 can be easily formed on the outer periphery of the shaft 20 because the hinged fibrous layer 60 has heat resistance as compared with a fabric formed of fiber yarn such as nylon or polyester.

Alternatively, a mesh network may be formed of a hemp fiber layer in place of the above-mentioned hanofi paper layer 60 to form the mesh 20 on the outer circumferential surface of the shaft 20. At this time, it is preferable to form the mesh network made of the hemp fiber layer on the shaft 20 using the resin.

Since the club head 200 directly charges the sand when swinging around the green bunker, the first guide part 250 is formed on the sole part 240 so as to reduce the resistance of the golf club to the swing speed of the golf club.

The description of the club head will be described in more detail with reference to FIGS. 2 and 3. FIG.

Fig. 2 is a front view showing the club head shown in Fig. 1, and Fig. 3 is a perspective view showing a sole portion of the club head shown in Fig. 1. Fig.

2 and 3, the club head 200 may include a striking surface 210, a heel portion 220, a toe portion 230, and a sole portion 240.

Specifically, striking surface 210 is also referred to as a club face, and is formed flush with the surface on which the golf ball is struck. The striking surface 210 is formed so as to be concave in the direction toward the heel portion 220 or in the opposite direction from the tow portion 230, or a plurality of spin lines 214 are formed in a lattice shape. At this time, the protrusion surface 216 is formed on the striking surface 210 due to the spin line 214.

 The spin line 214 and the protruding surface 216 cause the golf ball to rotate in reverse when hit by the golf ball. The spin line 214 may be formed in a 'U' or 'V' shape. The striking surface 210 may be formed with a plurality of grooves having a lower depth than the spin line 214 in order to cause more reverse rotation of the golf ball on the surface. Here, the heel portion 220 is a portion where the club head 200 is connected to the shaft 20, and the toe portion 230 is the opposite end portion of the heel portion 220 of the club head 200.

The sole portion 240 is formed below the striking surface 210 and is in contact with the ground. In particular, the sole portion 240 of the golf club for a bunker of the present invention is formed in a larger area than other irons so as to form a bounce with respect to the ground during swing.

The sole portion 240 may include a first guide portion 250 having a plurality of grooves formed at regular intervals behind the striking surface. The first guide unit 250 may reduce the sand resistance during the movement of the club head 200 to maintain the speed of the club head 200. The grooves formed in the first guide part 250 may be formed to have a larger width and a deeper depth than the spin line 214. In addition, the first guide part 250 may be formed at a wide interval relative to the spin line 214 so that the club head 200 is easily ejected from the bunker.

Meanwhile, the golf club for a bunker according to an embodiment of the present invention may include a second guide unit 260 formed on the striking surface 210.

The second guide portion 260 is formed by extending from each groove of the first guide portion 250 and is formed at a lower portion of the striking surface 210, that is, at a side where the striking surface 210 and the sole portion 240 face each other do. At this time, the second guide portion 260 is formed so as not to overlap with the lowermost spin line 214. The second guide portion 260 may be formed to about one third of the striking surface 210. Accordingly, the club head 200 can exit the bunker at a high speed when the sand is struck.

Further, a third guide part 270 may be further formed on the rear surface of the club head 200. [ The third guide portion 270 may have a groove formed on the rear surface of the club head 200 to about a half of the length thereof and may extend in the grooves of the first guide portion 270.

As described above, the golf club for the bunker according to the embodiment of the present invention includes the first guide part 250 formed on the sole part 240 of the club head 200, the second guide part 260 formed on the striking surface 210, And the third guide unit 270 formed on the rear surface of the club head 200, the club head 200 can be swung out of the bunker at a swing speed, and then the club head 200 can be quickly released to maintain the swing speed. Thereby, there is an effect that a novice golfer or women can more easily perform the bunker shot.

4 is a perspective view cut along the line I-I 'and line II-II' of FIG. 1, FIG. 5 is a cross-sectional view specifically showing a plane cut along the line I-I ' 5 is a perspective view showing the carbon fiber block shown in FIG. 5. FIG.

4 to 6, the shaft 20 includes first to third carbon fiber layers 110 to 130, which are hollow cylindrical pipes that are hollow from the innermost to the outward, and are sequentially laminated. The third carbon fiber layer 130 are formed.

The first carbon fiber layer 110 is formed by thermally curing a carbon fiber impregnated with a thermosetting resin on the outside of a cylindrical mold having a lowered upper light shape so as to have a desired thickness at an arbitrary winding angle and then winding.

The second carbon fiber layer 120 has a completed structure in which the carbon fiber blocks 150 shown in FIG. 6 are coupled to each other laterally. Each of the carbon fiber blocks 150 has a first curvature surface 151 formed to have a radius of curvature about a point and a second curvature surface 151 having the same curvature radius as the first curvature surface 151, A first curved surface 152 having a length of arc shorter than the arc length of the first curved surface 151 and a first curved surface 152 connected to one end of the first curved surface 151 and the second curved surface 152, And a second partition wall 154 connected to the other end of the curved surfaces 151 and 152, respectively. Thereby, an inner space defined by the first curvature surface 151, the second curvature surface 152, the first partition 153 and the second partition 154 exists in the inside of the carbon fiber block 150 do.

At this time, the internal space provided by the first curvature surface 151, the second curvature surface 152, the first partition wall 153, and the second partition wall 154 may cause a change in external shape of the shaft 20 have. Accordingly, the shape retaining portion can be provided to maintain the shape inside the inner space.

The shape retaining portion may include a support shaft 160 and a plurality of support pieces 161 to 164. The support shaft 160 is formed at the center of the inner space. The support shaft 160 is formed of the same material as the material of the carbon fiber block. The support shaft 160 is formed in a circular or polygonal columnar shape.

The plurality of support pieces 161 to 164 protrude from the outer surface of the support shaft 160 in the direction of the first curvature surface 151, the second curvature surface 152, the first partition wall 153 and the second partition wall 154 . In the embodiment of the present invention, the first to fourth support pieces 161 to 164 are provided. The first support piece 161 is formed to connect the support shaft 160 and the first curvature surface 151 and the second support piece 162 is connected to the support shaft 160 and the second curvature surface 152 . The third support piece 163 is formed to connect the support shaft 160 and the first partition wall 153 and the fourth support piece 164 is formed between the support shaft 160 and the second partition wall 154 Respectively. Accordingly, when the golfer swings, the deformation of the shaft 20 is relieved by the shape retaining portion in the inner space of the plurality of carbon fiber blocks 150, and the shape deformation due to the impact at the time of striking the golf ball can be prevented.

The first barrier rib 153 is provided with a protrusion 155 protruding in the form of a line and the second barrier rib 154 is provided with a groove 156 having the same shape as the protrusion 155. When the carbon fiber blocks 150 are laterally engaged, the protrusions 155 of the neighboring carbon fiber blocks 150 are inserted into the grooves 156. As a result, the carbon fiber blocks 150 are laterally bonded to each other to form a second carbon fiber layer 120 surrounding the first carbon fiber layer 110.

When the protrusion 155 is inserted into the groove 156, an adhesive may be further formed on the groove 156 or the protrusion 155. Thus, the carbon fiber blocks 150 are firmly fixed.

Grooves 156 and protrusions 155 provided in the carbon fiber block 150 may be formed as shown in FIG. The grooves 156 and protrusions 155 shown in Fig. 7 are manufactured such that when the protrusions 155 are inserted into the grooves 156, they can not fall outward. Accordingly, a plurality of carbon fiber blocks 150 can be bonded without using an adhesive or the like.

Also, in the embodiment of the present invention, the groove 156 and the protrusion 155 may be formed as shown in FIG. As shown in FIG. 8, a groove 156 is formed at one side of the carbon fiber block 150 in an open shape from the bottom, and a protrusion 155 formed at the other side in a top-down direction is formed. Accordingly, when the plurality of carbon fiber blocks 150 are combined, they can be easily combined and can not be easily separated after bonding, so that the third carbon fiber layer 130 can be easily formed when the third carbon fiber layer 130 is formed.

Also, in the embodiment of the present invention, the groove 156 and the protrusion 155 may be formed as shown in FIG. The groove 156 shown in FIG. 9 is formed in an open top shape, and the protruding portion 155 can be formed in a top-down direction. At this time, the groove 156 may have first to fourth slanted faces 172 to 175 and a parallel face 171 to facilitate the engagement of the groove 156 and the protrusion 155. The first inclined surface 172 and the second inclined surface 173 are formed on the first or second barrier rib 154 side and have different angles. The third and fourth inclined surfaces 174 and 175 are formed at the outermost portion of the carbon fiber block 150. The protrusions 155 may have a shape corresponding to the first to fourth slopes 172 to 175 and the parallel faces 171 so that the protrusions 155 can be easily attached to the grooves 156.

The third carbon fiber layer 130 is formed by winding the carbon fiber impregnated with the thermosetting resin outside the second carbon fiber layer 120 to have a desired thickness at an arbitrary winding angle and then thermally curing.

Since the shaft 20 according to the present invention is very light in weight as compared to a shaft made of steel or graphite by being manufactured by stacking the first to third carbon fiber layers 110 to 130, So that the impact applied to the golfer can be considerably mitigated. In addition, when the golf ball is struck, the impact transmitted to the golfer can be alleviated by forming the hippocampus fibrous layer 60 outside the third carbon fiber layer 130. In addition, the golfer can improve the batting speed and swing speed with the same force.

In the above description, only three carbon fiber layers 110 to 130 are shown. However, the carbon fiber layers 110 to 130 may be laminated in three or more layers according to the user's demand.

As described above, according to the golf club and the manufacturing method thereof according to the embodiment of the present invention, since the shaft including the carbon fiber and the hanami fiber layer wrapping the shaft are included, the shock applied to the golfer can be alleviated and the hitting speed and swing speed can be improved have.

While the present 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, It will be understood. The embodiments described above are therefore to be considered in all respects as illustrative and not restrictive.

10: Golf club
20: Shaft
25: Grip
30: grip area
40: non-grip region
50: shock-absorbing film
60: Korean paper fibrous layer
110: first carbon fiber layer
120: second carbon fiber layer
130: Third carbon fiber layer
150: carbon fiber block
151: first curvature surface
152: second curvature surface
153: first partition
154: second partition
155:
156: Home
160: Support shaft
161 to 164: First to fourth supporting pieces
171:
172 to 175: First to fourth slopes
200: Club Head
210: striking face
214: spin line
216:
220: Hulbu
230: Tobu
240:
250: first guide portion
260: second guide portion
270: third guide portion

Claims (7)

A club head hitting a golf ball;
A shaft having one end connected to the club head; And
And a grip formed on the other end side of the shaft so as to grip the golfer,
The club head
A heel portion connected to the striking surface and the shaft; a toe portion provided at an end of the striking surface; and a sole portion formed below the striking surface and contacting the ground,
Wherein the first and second guide portions include a first guide portion having a plurality of grooves formed at regular intervals rearward from the striking surface,
The shaft
A first carbon fiber layer of a pipe-pipe shape whose diameter increases from the lower part to the upper part and is hollow; A second carbon fiber layer having a plurality of carbon fiber blocks surrounding the first carbon fiber layer; And a third carbon fiber layer surrounding the second carbon fiber layer,
Wherein the carbon fiber block comprises:
A first curvature surface formed to have a radius of curvature; A second curvature surface having a radius of curvature different from the first curvature radius and having a length less than a length of the arc of the first curvature radius; A first partition wall connected to one end of the first curvature surface and the second curvature surface, respectively; A second diaphragm connected to the other end of the first and second curvature surfaces, respectively; A line-shaped protrusion protruding outward from the first bank; And a line-shaped groove formed in the second bank,
The adjacent carbon fiber blocks are inserted into the groove,
The groove
First and second inclined surfaces continuously formed at different angles on the second partition wall side; Third and fourth inclined surfaces continuously formed at mutually different angles on the outermost side of the groove; And a parallel surface formed between the second inclined surface and the third inclined surface,
And the protrusions are formed in a shape corresponding to the first to fourth slopes and the parallel surfaces so as to be easily attached to the grooves.
The method according to claim 1,
The striking surface
And a second guide portion extending from a plurality of grooves of the first guide portion in an area adjacent to the sole portion,
And a third guide portion having a plurality of grooves extending from the first guide portion on the opposite side of the striking surface.
The method according to claim 1,
And a horny fibrous layer or a hemp fiber layer formed on the outer circumferential surface of the third carbon fiber layer in the form of a mesh net.
The method of claim 3,
Further comprising a shock-absorbing film formed between the third carbon fiber layer and the paper or fibrillation layer or hemp fiber layer, formed on the outside of the hippocampus fibrous layer or hippocampus fibrous layer, and formed in a region adjacent to the region where the grip is formed, club.
delete The method according to claim 1,
The carbon fiber block
And a shape retaining portion formed to retain the shape of the inner space in an inner space surrounded by the first curvature surface, the second curvature surface, the first partition, and the second partition.
The method according to claim 6,
The shape-
A support shaft formed at the center of the inner space; And
And first to fourth support pieces formed to extend from the outer surface of the support shaft to the first curvature surface, the second curvature surface, the first partition, and the second partition, respectively.

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