TECHNICAL FIELD
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The present invention relates to a golf putter head, and more particularly, to a golf putter head which is convertible into a blade putter head, mallet putter head or a two ball putter head depending on a pivoting angle of a pivoting tail portion.
BACKGROUND ART
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Golf is a club and ball sport, in which competing players (or golfers) uses clubs shaped like a stick to hit the ball into holes on a golf course using the fewest number of strokes. The golf course may include a large area of 660,000 to 1,000,000 m2 such as fields, hills and mountains. The golf course may be classified into a seaside course which is located at the beach and an inland course which is located inland.
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In playing golf which men and women of all ages can enjoy, one of methods for reducing the number of strokes is using a suitable golf club, among others, a suitable putter.
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There are many types of putters, but the putters may be largely classified into a straight type called blade or anser style putter; and a crescent type called mallet and two ball style putter.
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FIG. 1 is a perspective view of a blade putter head of the aforementioned putters. The blade putter distributes the weight of the putter head to the toe and heel of the head and makes the sweet spot larger (sweet spot means the center point to which a golf ball is hit from a head face, is designed to result in an ideal stroke if the golf ball hits the sweet spot).
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FIG. 2 is a perspective view of a mallet style putter head of the aforementioned putters. The mallet style putter has the head with larger width backwardly and is effective to create a visibly stable address (which refers to a state where a player decides the position of his/her feet to hit the golf ball and places the head on the ground, and usually, means pointing the face close to the golf ball). In the case of the mallet style putter, the moment of inertia which is improved about 30 to 40% due to the center of gravity shifted to the rear side of the head and the weight distributed to the toe and heel compared to the blade putter makes a larger sweet spot and provides stable putting stroke.
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FIG. 3 is a perspective view of a two ball putter head of the aforementioned putters. The two ball putter has a head in which two circles are drawn so that the two circles are aligned in the same plane with an actual golf ball, leading to simple address or arrangement of a putting line (which means a line connecting the golf ball and hole on the green) and contributing the success rate of putting (performing stroke to hit the ball into a hole on the green).
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Among the putters which are classified largely into straight and crescent types, the straight type putter is advantages for golfers who have stable strokes and are good at directions. The crescent type putter is advantages for novice golfers since it has a long head and easy to aim at a golf ball and has a center of gravity that is distant from the face (hitting surface of the putter).
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As advantageous putters vary by each golfer's ability, putters should be unavoidably replaced in line with the improvement of the golfing ability, increasing the costs for replacing the putters.
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Novice golfers cannot help but exercise putting by carrying many types of putters to decide a suitable putter. Thus, the novice golfers suffer difficulty to replace putters frequently during exercise.
DISCLOSURE
Technical Problem
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The present invention has been made to solve the problems and it is an object of the present invention to provide a golf putter head which is convertible into a blade, mallet and two ball putter by varying the center of gravity of the head by rotating and arranging a pivoting tail portion in three directions (horizontal, vertical and diagonal direction with respect to a rear surface of the head) by a structure for controlling the degree of pivoting.
Technical Solution
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In order to achieve the object of the present invention, a golf putter head that strikes a golf ball using the front surface of a head when putting, the golf putter head comprises a lower guide formed so as to extend from a bottom of a rear surface of the head; an upper guide formed so as to extend from the rear surface of the head at a predetermined distance above the lower guide in order to define a space portion; and a pivoting tail portion, one end of which is inserted into the space portion and pivotably fixed in the space portion by means of a fixing member, wherein a structure for controlling the degree of pivoting is formed in order to control the pivoting angle of the pivoting tail portion, the weight balance of the head is variable according to the pivoting angle of the pivoting tail portion, and the pivoting tail portion is formed in the shape of a bar having a rounded edge at the end thereof that is fixed by the fixing member.
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The structure for controlling the degree of pivoting comprises a recess 420 which is formed at an identical interval in a circumference of the pivoting tail portion 260 which is rounded, a groove 430 which is formed in a center of an internal lateral surface of the space portion 230, an elastic member 280 which is inserted into the groove 430 and a ball 270 which is fitted to the groove 430 and closely adhered to the recess 420 by the elastic member 280, wherein the ball 270 acts as a stopper when the pivoting tail portion 260 pivots.
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Three recesses 420 are formed so that the pivoting tail portion 260 is pivotably arranged in three directions comprising horizontal, vertical and diagonal directions with respect to the rear surface of the head 210.
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A weight-adding portion 410 is formed to give additional load to the other end of the pivoting tail portion 260.
Advantageous Effect
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As described above, a golf putter head according to the present invention enables a user to selectively convert the putter into a blade, mallet or two ball putter depending on a position of a pivoting tail portion (i.e. horizontal, diagonal and vertical directions with respect to the rear surface of the head) and has the effect of using three types of putters with a single putter and reduces the burden for replacing the putter.
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Further, the golf putter head according to the present invention reduces inconvenience of changing putters for exercising putting to decide a suitable putter.
BRIEF DESCRIPTION OF DRAWINGS
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FIG. 1 is a perspective view of a blade putter head of the aforementioned putters.
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FIG. 2 is a perspective view of a mallet putter head of the aforementioned putters.
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FIG. 3 is a perspective view of a two ball putter head of the aforementioned putters.
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FIG. 4 is an exploded perspective view of a golf putter head according to an exemplary embodiment of the present invention.
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FIG. 5 is a perspective view of a lower guide and an upper guide of the golf putter head according to the present invention.
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FIG. 6 is a sectional view of a pivoting tail portion and a structure for controlling the degree of pivoting of the golf putter head according to the present invention.
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FIG. 7 is a partial cutaway perspective view of the golf putter head according to the present invention when the golf putter head is used as a blade putter.
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FIG. 8 is a partial cutaway perspective view of the golf putter head according to the present invention when the golf putter head is used as a mallet putter.
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FIG. 9 is a partial cutaway perspective view of the golf putter head according to the present invention when the golf putter head is used as a two ball putter.
BEST MODE
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Hereinafter, a golf putter head according to an exemplary embodiment of the present invention will be described with reference to accompanying drawings.
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FIG. 4 is an exploded perspective view of a golf putter head according to an exemplary embodiment of the present invention.
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As shown in FIG. 4, a golf putter head according to an exemplary embodiment of the present invention that strikes a golf ball using the front surface of the head 210 when putting, the golf putter head comprising: a lower guide 220 formed so as to extend from a bottom of a rear surface of the head 210; an upper guide 240 formed so as to extend from the rear surface of the head 210 at a predetermined distance above the lower guide 220 in order to define a space portion 230; and a pivoting tail portion 260, one end of which is inserted into the space portion 230 and pivotably fixed in the space portion 230 by means of a fixing member 250, wherein a structure for controlling the degree of pivoting is formed in order to control the pivoting angle of the pivoting tail portion 260, the weight balance of the head 210 is variable according to the pivoting angle of the pivoting tail portion 260.
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As described above, the golf putter head according to the present invention largely includes the upper and lower guides 240 and 220 which are formed in the rear surface of the head 210, and the pivoting tail portion 260 whose pivoting angle is controlled by the structure for controlling the degree of pivoting. The upper and lower guides 240 and 220 and the pivoting tail portion 260 will be described in more detail with reference to accompanying drawings (a ball 270, an elastic member 280 and a hinge hole 290 shown in FIG. 4 will be described later).
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FIG. 5 is a perspective view of a lower guide and an upper guide of the golf putter head according to an exemplary embodiment of the present invention.
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As shown in FIG. 5, the lower guide 220 may be formed so as to extend from a bottom of a rear surface of head 210. In particular, the lower guide 220 is shaped like a flat panel and is formed so as to extend from an edge of the bottom of the rear surface of the head 210, and as a result a lower surface of the head 210 and a lower surface of the lower guide 220 form a plane but two hinge holes 290 are perforated in a center at a predetermined distance to insert a fixing member 250 (which will be described later) into the hinge holes 290.
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The upper guide 240 is formed so as to extend from the rear surface of the head 210 at a predetermined distance above the lower guide 220 (above the lower guide 220 means a direction opposite to a direction in which the lower guide 220 is placed in the surface) in order to define a space portion 230 (refer to FIG. 4). The height of the space portion 230 is a little bit higher than that of the pivoting tail portion 260 (to be described later).
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That is, as the space portion 230 is provided to accommodate therein the pivoting tail portion 260 (to be described later), the height of the space portion 230 is a little bit higher than that of the pivoting tail portion 260 so that the pivoting tail portion 260 is easily inserted into and taken out from the space portion 230.
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FIG. 6 is a sectional view of the pivoting tail portion 260 and the structure for controlling the degree of pivoting of the golf putter head according to the present invention.
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As shown in FIG. 6, the pivoting tail portion 260 has an one end inserted into the space portion 230 (refer to FIG. 4) and pivotably fixed in the space portion 230 by means of the fixing member 250. The pivoting tail portion 260 is formed in the shape of a bar having a rounded edge at the end thereof that is fixed by the fixing member 250. In particular, the structure for controlling the degree of pivoting is formed to control the pivoting angle of the pivoting tail portion 260. The pivoting tail portion 260 will be described in more detail and then the structure for controlling the degree of pivoting according to an exemplary embodiment will be described.
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As described above, the pivoting tail portion 260 is formed in the shape of a bar, one end of which is inserted into the space portion 230 and pivotably fixed in the space portion 220 by the fixing member 250. As the pivoting tail portion 260 is pivotable by the fixing member 250, the weight balance of the head 210 (refer to FIG. 4) varies by the pivoting angle (degree of pivoting) of the pivoting tail portion 260.
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A weight-adding portion 410 may be further formed in the other end of the pivoting tail portion 260 to give additional load. The weight-adding portion 410 may be formed integrally in the other end of the pivoting tail portion 260 or detachably coupled to the pivoting tail portion 260 as necessary.
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The structure for controlling the degree of pivoting includes a recess 420 which is formed at an identical interval in a circumference of the pivoting tail portion 260 which is rounded, a groove 430 which is formed in a center of an internal lateral surface of the space portion 230, an elastic member 280 which is inserted into the groove 430 and a ball 270 which is fitted to the groove 430 and closely adhered to the recess 420 by the elastic member 280. The ball 270 acts as a stopper when the pivoting tail portion 260 pivots. In particular, three recesses 420 may be formed so that the pivoting tail portion 260 is pivotably arranged in three directions including horizontal, vertical and diagonal directions with respect to the rear surface of the head 210.
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Hereinafter, the recesses 420, the groove 430, the elastic member 280 and the ball 270 which form the structure for controlling the degree of pivoting will be described in more detail.
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The recesses 420 are formed at an identical interval in the circumference of the pivoting tail portion 260 that is rounded. The depth of the recesses 420 may be formed to be suitable for the size of the ball 270 so that one-third of the ball 270 (which will be described later) is inserted into the recesses 420. In particular, the number of the recesses 420 may be three recesses so that the pivoting tail portion 260 is pivotably arranged in three directions including horizontal, vertical and diagonal directions with respect to the rear surface of the head 210.
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That is, when an axis A and an axis B which are perpendicular to each other centering on the hinge hole 290 into which the fixing member 250 is fixed are formed, the axes A and B pass a lower point of the recesses 420 a and 420 c, and another recess 420 b is formed therebetween. As a result, three recesses 420 a, 420 b and 420 c are formed in a circumference of the hinge hole 290.
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The groove 430 is formed in the center of the internal lateral surface of the space portion 230. The center of the internal lateral surface means the center of the surface falling under the rear surface of the head 210 among six surfaces forming the space portion 230. The location of the groove 430 may be a location in which an axis passing through a center of the groove 430 is perpendicular to an axis passing through the center of the hinge hole 290 of the lower guide 220.
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The elastic member 280 supplies an elastic force to the ball 270 (to be described later) and the ball 270 is selectively inserted into the recesses 420 and acts as a kind of a stopper when the pivoting tail portion 260 pivots. The elastic member 280 may include a coil spring, but not limited thereto.
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The ball 270 is fitted to the groove 430 and is selectively adhered to the recesses 420 by the elastic member 280. As described above, the ball 270 may include a steel ball which is highly wear-resistant to act as a stopper.
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FIG. 7 is a partial cutaway perspective view of the golf putter head according to the present invention when the golf putter head is used as a blade putter. FIG. 8 is a partial cutaway perspective view of the golf putter head according to the present invention when the golf putter head is used as a mallet putter. FIG. 9 is a partial cutaway perspective view of the golf putter head according to the present invention when the golf putter head is used as a two ball putter.
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The process of using the golf putter head according to the present invention converted into a blade putter, mallet putter and two ball putter will be described with reference to accompanying drawings.
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If a user desires to use the golf putter head according to the present invention as a blade putter, he/she may locate the pivoting tail portion 260 in a horizontal direction with respect to the rear surface of the head 210 (i.e., fit and adhere the ball 270 pressed by the elastic member 280 to the first recess 420 a) as shown in FIG. 7. If a user desires to use the golf putter head according to the present invention as a mallet putter, he/she may locate the pivoting tail portion 260 in a diagonal direction with respect to the rear surface of the head 210 (i.e., fit and adhere the ball 270 pressed by the elastic member 280 to the second recess 420 b) as shown in FIG. 8.
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If a user desires to use the golf putter head according to the present invention as a two ball putter, he/she may locate the pivoting tail portion 260 in a vertical direction with respect to the rear surface of the head 210 (i.e. fit and adhere the ball 270 pressed by the elastic member 280 to the third recess 420 c) as shown in FIG. 9.
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As above, the golf putter head according to the present invention enables a user to selectively convert and use the golf putter head as blade, mallet and two ball putters and has the effect for using a single putter as three types of putters to thereby reduce the replacement cost for the putter and inconvenience in replacing the putters during putting exercise to decide a suitable putter.
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Although a few exemplary embodiments have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles and spirit of the invention, the range of which is defined in the appended claims and their equivalents.
INDUSTRIAL APPLICABILITY
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A golf putter head according to the present invention enables a user to selectively convert and use the golf putter head as blade, mallet and two ball putters and has the effect for using a single putter as three types of putters to thereby reduce the replacement cost for the putter.
