Functional golf putter

Abstract

Provided is a golf putter having an array of cornual projections formed on a putter face, which structurally suppresses a golf ball on the green during putting from skidding and hopping and from acting / reacting such that movement distance suddenly increases after unintended backspin thereof, and functions to allow, at the same time as putting, forward spin of the golf ball in the proceeding direction and, specifically, to a customized golf putter with an appropriate groove member selected depending on green speed and the gender and physical conditions of a golfer. The golf putter includes: a head having a groove formed on a face, which comes into contact with the golf ball during putting; a shaft connected to the head through a neck; and a grip provided at the end portion of the shaft opposite to the head.

Description

TECHNICAL FIELD

[0001] The present invention relates to a functional golf putter having a pointed, horn-shaped (cornu) protrusion array formed on the front of the putter face, which structurally suppresses the phenomenon of a golf ball sliding on the green (skidding), bouncing (hopping), and suddenly increasing its travel distance after an unintended reverse rotation (action / reaction) during putting, and acts to cause the golf ball to rotate in the forward direction simultaneously with putting. In particular, the present invention relates to a customized golf putter in which an appropriate groove member is selected and configured depending on the gender (male, female) and physical condition (weight, height) of the golfer, or the weather conditions (frost, snow, rain, dew) and green speed during a golf round.BACKGROUND ART

[0002] Golf is a sport heavily reliant on equipment, and golfers can achieve good results only when they use equipment that best suits their individual needs. Therefore, golf club fitting is becoming increasingly important.

[0003] A golf putter is typically used by golfers to place a golf ball on the putting green and then guide it into the hole. Of the various golf clubs used in golf, it is the only tool that rolls the ball without launching it into the air, thereby moving it to the target location.

[0004] Putting accounts for approximately half of the total strokes in a golf game and significantly impacts performance. While its importance is readily apparent, putting is a delicate and complex motion, leading to frequent anxiety and mistakes even with practice. To overcome this, various putter designs have been developed to improve aim and stroke convenience.

[0005] As illustrated in FIG. 1, a conventional putter comprises a shaft 200 made of metal or carbon fiber, a grip (handle) 300 installed on top of the shaft, and a head 100 made of metal for striking a golf ball. The head and shaft are connected via a neck. To accurately move a golf ball in the intended direction during a putting motion, it is important to accurately align the golf ball with the center of the putter face and strike the ball so that it rolls in a straight line.

[0006] However, conventional putters have a relatively wide contact area between the face and the golf ball when striking a golf ball. This can cause the golf ball to backspin or bounce, causing it to skid on the putting green grass, bounce, and suddenly increase distance. This causes sliding friction and irregular bounce, leading to unstable directionality and changes in the sense of distance, making it difficult for the user to accurately move the golf ball in the desired direction. Moreover, this phenomenon was more pronounced when the grass grain was in the opposite direction of the golf ball's travel. In addition, the face loft angle of existing putters is formed to be inclined upwards by about 3 to 4 degrees, and in this case, the actual loft angle can increase at the moment of impact depending on the golfer's posture. For this reason, the phenomenon of the golf ball bouncing off the ground increases as the loft angle increases. In addition, during putting, due to the action / reaction, the golf ball may backspin in some areas immediately after impact and then roll forward in the remaining areas.

[0007] Another conventional technology proposed to address the above issues involves a putter that creates a loft angle that tilts the face toward the putting green floor, minimizing the contact area with the face upon impact. At the same time, it strikes the upper center of the ball, causing the ball to rotate and roll in the correct direction, preventing the ball from slipping or bouncing, thus improving the golfer's ability to progress in the desired direction.

[0008] Putting is a relatively short distance, but the golfer's physical characteristics and putting posture, as well as the point of impact and the angle of impact at the moment the putter strikes the ball, are factors that determine the ball's direction. Furthermore, the amount of impact the putter exerts on the ball upon impact is a key factor in determining the distance the ball travels.

[0009] As discussed above, selecting a putter that suits each golfer's individual characteristics is crucial for reducing the number of strokes through precise putting.

[0010] However, despite previous improvement efforts, most putters currently on the market are uniformly provided depending on limited specifications, so that ordinary golfers cannot select a customized putter that is precisely segmented depending on gender, physical characteristics, and green speed, and so, as a second best option, they have no choice but to purchase one that is roughly similar but does not quite fit their body type or characteristics. In other words, even in the prior literature presented as a previous improvement plan (prior patent literature described below), they only propose a uniformly designed putter structure without segmenting depending on the golfer's gender, physical characteristics, and green speed. Therefore, because putters with precisely segmented structures depending on gender, physical characteristics, and green speed are not provided, the range in which golfers can select a putter that is optimized for them is very limited.

[0011] Furthermore, as golfers' weight and other physical conditions change over time, they often end up using a putter that doesn't fit them properly unless they purchase a new one. Therefore, it's important to provide a simple way to reconfigure the putter face, allowing golfers to easily replace the relevant part on their existing putter face.

[0012] Furthermore, even on the same golf course, the green speed during a round can significantly affect the shape and distance of the golf ball roll. Green speed can vary depending on how short or long the grass is mowed, how firmly the green surface is compacted by rolling, and even weather conditions such as humidity. This makes it very difficult for golfers to control distance when putting.

[0013] As discussed above, a variety of factors interact to make it difficult for golfers to accurately execute their putting motion. To more effectively overcome these problems, we can consider changing the groove structure of golf putters in various ways (micro-modification) as a countermeasure corresponding to various factors.PRIOR ART DOCUMENTSPatent Documents(0001) Republic of Korea Patent Publication No. 10-1097772, Putter with a Downward Hitting Surface with Different Impact Angles for Each Section.

[0015] (0002) Republic of Korea Patent Publication No. 10-1183428, Golf Club.

[0016] (0003) Republic of Korea Patent Publication No. 10-1691753, Golf Putter Head and Golf Putter Including Same.

[0017] (0004) Republic of Korea Patent Publication No. 10-2273433, Golf Putter with Improved Directionality and Straightness.

[0018] (0005) Republic of Korea Publication No. 10-2008-0004272, Golf Putter Head.

[0019] (0006) Republic of Korea Utility Model Registration No. 20-0150491, Head for golf putter.DESCRIPTION OF THE INVENTIONTechnical Problem

[0020] The present invention has been proposed to solve the above problems and has an object of providing a customized golf putter. To achieve this object, a sharp, horn-shaped protrusion structure is arranged on a front surface of a putter face groove member (a part that comes into contact with a golf ball) such that, when a putting ball is struck, a contact area between a metal protrusion and a plastic golf ball is temporarily deformed as if the protrusion were embedded in the contact area of the golf ball. When the groove protrusion is separated, the deformed portion of the golf ball is restored to its original state due to a phenomenon occurring between a sharp part of the protrusion and a surface of the golf ball contact area (hereinafter referred to as an “instantaneous imprinting bond”). As a result, a rolling motion of the golf ball is precisely induced without slipping or bouncing. At the same time, the groove member may be formed integrally with a head body, or designed and manufactured in a modular form so as to be detachable from or connectable to the head body. Further, the groove member may be designed and manufactured with various groove configurations, including variations in a size or degree of sharpness of the horn-shaped protrusion (meaning an interior vertex angle at a tip of the horn-shaped protrusion), thereby allowing selection of a groove suitable for a golfer's gender or physical condition.

[0021] In addition, the present invention has an object of providing a customized golf putter. To achieve this object, a groove member is precisely configured such that, by an arrangement of horn-shaped protrusions formed on a front surface of the groove member, a driving force for rolling a golf ball is immediately applied by an instantaneous imprinting bond during a putting stroke. Further, the angle between the face surface of the head and the center line of the shaft is set to be substantially 180 degrees, thereby fundamentally preventing hopping or backspin of the golf ball at an initial contact with the groove member and enabling immediate forward rotation, that is, roll generation, upon impact.

[0022] In addition, the present invention has another object of providing a customized golf putter. To achieve this object, the groove member is precisely configured such that a driving force for rolling a golf ball is immediately generated by an instantaneous imprinting bond during putting by means of an arrangement of horn-shaped protrusions formed on a front surface of the groove member. Further, the groove member is configured to be easily selectable and replaceable at a golf course site in consideration of a putting green speed, thereby enabling selection of an appropriate groove depending on on-site putting conditions.Technical Solution

[0023] The present invention is one form for achieving the above-mentioned object, and comprises a head having a groove formed on a face surface that contacts a golf ball during putting, a shaft connected to the head through a neck, and a grip provided at an end of the shaft opposite the head, wherein: (a) the head comprises a head body and a groove member, (b) in order to generate an instantaneous denting phenomenon during putting, a cornu-shaped protrusion array having a sharp needle structure at a vertex thereof is formed on the front surface of the groove member (the portion that contacts the golf ball during putting), (c) the protrusion array of the groove member is configured such that, based on a golfer's gender (male or female) and a golfer's physical condition (at least one of weight or height), at least any one of a size (a product of a base and a height) of the cornu-shaped protrusion, or a degree of sharpness (an inner angle of an vertex) of the cornu-shaped protrusion is designed to differ by predetermined values so as to form a plurality of types, wherein the customized golf putter is provided to allow selection of any one of the plurality of types, (d) the groove member is manufactured in a module form that can be separated from or connected to the head body, and (e) the shape of the protrusions forming the protrusion array of the groove member has a shape of either a cone or a pyramid, and the angle between the edge 131b of the first protrusion 131 forming the protrusion array and the edge 133a of a second protrusion 133 adjacent to the edge 131b is formed at any one angle of 60 degrees to 120 degrees.

[0024] The present invention is another form for achieving the above-mentioned object, and in the above-mentioned customized golf putter, the sizes of the horn-shaped protrusions forming the protrusion array of the groove member are formed to be different for each weight range for men and women, with the weight range for men ranging from at least 45 kg to 95 kg being divided into multiple stages of predetermined units, and the weight range for women ranging from at least 40 kg to 90 kg being divided into multiple stages of predetermined units.

[0025] The present invention is another form for achieving the above-mentioned object, and in the case of a plurality of grooves provided to reduce the impact of the putter on the golf ball when the putting green speed is at or above a predetermined speed, a groove made of a relatively light material is selected, and conversely, in the case of a green speed is below a predetermined speed, a groove made of a relatively heavy material is selected from among the grooves provided to reduce the impact of the putter on the golf ball, and a plurality of grooves are provided so that the grooves can be easily replaced on the golf course.

[0026] The present invention is another form for achieving the above-mentioned object, and in the above-mentioned customized golf putter, the face surface of the head and the shaft are horizontal (180 degrees), each protrusion forming the protrusion array of the groove member has a square pyramidal shape, and the angle between the edge 131b of the first protrusion 131 forming the protrusion array and the edge 133a of a second protrusion 133 adjacent to the edge 131b forming the protrusion array is 90 degrees.

[0027] The present invention is another form for achieving the above-mentioned object, and in the above-mentioned customized golf putter, the pyramid-shaped protrusions are configured such that the body weight is divided into 10 sections in 5 kg units, and the edge lengths of the bottom surfaces of the pyramid-shaped protrusions are formed for men, from 1.2 mm to 3.0 mm at 0.2 mm intervals, and for women, from 1.1 mm to 2.9 mm at 0.2 mm intervals, respectively.Effect of the Invention

[0028] The putter according to the present invention, as described above, prevents the golf ball from slipping or bouncing by ensuring that the face horns are properly embedded in the surface of the golf ball during a putting motion, thereby causing the golf ball to roll forward immediately upon impact, thereby offsetting the resistance of the grass grain and enhancing directionality and putting distance controllability.

[0029] The present invention provides a module form that can be separated and attached to the head body of the putter, and by designing and manufacturing various arrangements of horn-shaped protrusions formed on the front surface of the groove member, thereby broadening the range of choices so that golfers can easily secure a customized putter suited to their gender, physical condition, or putting green speed.

[0030] The customized golf putter designed and manufactured according to the present invention has the effect of enhancing putting stability by allowing the golfer to comfortably maintain direction and control distance by causing a momentary denting and bonding phenomenon at the contact area between the sharp protrusions (metal material) of the groove and the golf ball (plastic material) during putting, thereby smoothly rolling the golf ball.

[0031] The golf putter according to the present invention has the effect of preventing the golf ball from bouncing (hopping) or backspin at the initial contact between the groove member and the golf ball during putting by configuring the head face surface of the groove structure in which the horn-shaped protrusions are arranged and the shaft centerline so that the angle is horizontal (180 degrees).

[0032] In addition, the golf putter of the present invention, which can selectively separate and attach modular groove members, has the economic effect of allowing the golfer to easily replace the front face portion (partial or entire face) of the putter from the putter in use, even if the golfer's physical condition, such as weight, changes, and thus reconfigure the putter to a structure suitable for the changed physical condition depending on preference, thereby enabling the golfer to obtain a customized putter at a lower cost.

[0033] In addition, by accumulating putting green data for each golf course that varies depending on the weather, such as the condition of the grass on the putting green, the condition of the putting green floor, or humidity (accumulating using location information such as GPS), and selecting a putter groove module that matches the change in green speed determined by the weather, such as the condition of the grass, the condition of the putting green floor, or humidity during an actual round, it has the effect of making it much easier for the golfer to control the distance when putting.

[0034] Furthermore, it has the effect of automatically matching each golfer's unique information (e.g., smartphone number, QR code, etc.) with corresponding putter groove module information, thereby enabling the selection of an optimal putter groove considering each golfer's physical condition and putting green condition, and providing the information to each golfer's personal information terminal (e.g., a general smartphone or a single-shot putter fitting device).BRIEF DESCRIPTION OF DRAWINGS

[0035] FIG. 1 is a schematic diagram illustrating the configuration of a conventional golf putter.

[0036] FIGS. 2A-2B are configuration diagrams of an embodiment of a customized golf putter according to the present invention. FIG. 2A is a front view of the customized golf putter of the present invention, and FIG. 2B is a cross-sectional view taken along line A-A′ of FIG. 2A.

[0037] FIGS. 3A-3B are configuration diagrams of a head (100) of a customized golf putter according to the present invention of FIGS. 2A-2B, wherein FIG. 3A is a plan view and front view of the putter head of the present invention, and FIG. 3B is a plan view and back view of the putter head of FIG. 3A.

[0038] FIGS. 4A-4B are configuration diagrams of a head (100) of a customized golf putter according to the present invention of FIGS. 2A-2B, wherein FIG. 4A is a diagram of a head body 110 of a golf putter according to the present invention, and FIG. 4B is a diagram of a groove member 130 of a golf putter according to the present invention.

[0039] FIGS. 5A-5B is a diagram illustrating a groove member 130 of an embodiment of the present invention of FIG. 4B, wherein FIG. 5A is a plan view and a front structural diagram of a putter groove member 130 of the present invention, and FIG. 5B is a plan view and a back structural diagram of the groove member 130 of FIG. 5A.

[0040] FIGS. 6A-6B are diagrams illustrating a horn-shaped protrusion arrangement structure of the groove member 130 of an embodiment of the present invention of FIGS. 5A-5B, wherein FIG. 6A is an enlarged view of the horn-shaped protrusion arrangement of the groove member 130, and FIG. 6B is an enlarged view of two horn-shaped protrusions 131, 133 indicated by dotted lines in FIG. 6A.

[0041] FIG. 7 is a diagram showing the state of fastening of the head body 110 and the groove member 130 constituting the putter head 100 of an embodiment of the present invention of FIGS. 2A-2B.BEST MODE FOR CARRYING OUT THE INVENTION

[0042] A golf putter comprising a head having a groove formed on a face surface that contacts a golf ball during putting, a shaft connected to the head through a neck, and a grip provided at an end of the shaft opposite the head, wherein (a) the head has a head body and a groove member, (b) in order to generate an instantaneous stamping engagement phenomenon during putting, a cornu-shaped protrusion array having a sharp needle structure at a vertex thereof is formed on the front surface of the groove member (which is a portion that contacts a golf ball during putting), and (c) the protrusion array of the groove member is predetermined for at least any one of the size (the product of a base and a height) of the cornu-shaped protrusion or the degree of sharpness (inner angle of the vertex) of the cornu-shaped protrusion based on the golfer's gender (male, female) and the golfer's physical condition (at least any one condition of weight or height). Among the plurality of types designed with different intervals, any one is selected, wherein (d) the groove member is manufactured in a module form that can be separated from or connected to the head body, and (e) the shape of the protrusions forming the protrusion array of the groove member has either a cone or a pyramid shape, and the angle between the edge 131b of the first protrusion 131 forming the protrusion array and the edge 133a of the second protrusion 133 adjacent to the edge 131b is formed at any angle between 60 degrees and 120 degrees.Mode for Embodiment of Invention

[0043] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings, FIGS. 2A to 7. The description herein is by no means intended to limit the present invention to specific embodiments, and should be understood to include various modifications, equivalents, and / or alternatives in addition to the disclosed embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar components. Furthermore, expressions such as “first,”“second,” etc., used herein may modify various components regardless of order and / or importance, and are only used to distinguish one component from another, without limiting the components. Furthermore, the terms used herein are used solely to describe specific embodiments and are not intended to limit the technical scope, and singular expressions may include plural expressions unless explicitly defined otherwise. Furthermore, terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by those skilled in the art.

[0044] FIGS. 2A-2B are drawings illustrating the configuration of an embodiment of a customized golf putter according to the present invention. FIG. 2A is a schematic diagram illustrating the front configuration of a customized golf putter according to the present invention, and FIG. 2B is a cross-sectional view taken along line A-A′ of FIG. 2A.

[0045] A customized golf putter 100 according to an embodiment of the present invention has a groove member 130 positioned on the central face between the toe 111 and the heel 113 of the head body 110, and a shaft 200 connected to the upper end of the heel 113 via a neck 210. In particular, the groove member 130 may be designed and manufactured to be fixedly attached within the head body 110, and more preferably, the groove member 130 may be made detachable from the head body 110, so that other groove members can be conveniently replaced and combined when necessary.

[0046] In a preferred embodiment of the present invention, a groove member 130 is positioned in a recessed portion formed in the center of the face of the head body 110, and groove fastening bolts 150a, 150b are inserted from the rear of the head body 110 to fasten and fix the head body 110 and the groove member 130. To this end, groove fastening holes 115a, 115b are formed in the head body 110, and bolt fastening nuts 135a, 135b are formed at corresponding positions on the rear portion of the groove member 130 so that the ends of the bolts 150a, 150b can be inserted and fastened while rotating at a predetermined depth, as shown in FIG. 5B. In addition, a directional sight 117 is provided at a middle position of the upper surface (top) of the head body 110.

[0047] FIGS. 3A-3B are drawings for explaining the configuration of the head 100 of the customized golf putter according to the present invention of FIGS. 2A-2B, wherein FIG. 3A is a drawing showing the plan and front structure of the putter head of the present invention, and FIG. 3B is a drawing showing the plan and back structure of the putter head of FIG. 3A. FIGS. 4A-4B are drawings for explaining the configuration of the head 100 of the customized golf putter according to the present invention of FIGS. 2A-2B, wherein FIG. 4A is a drawing showing the head body 110 of the golf putter according to the present invention, and FIG. 4B is a drawing showing the groove member 130 of the golf putter according to the present invention. In addition, FIG. 7 is a drawing showing a state in which the head body 110 and the groove member 130 constituting the head 100 of the customized golf putter according to an embodiment of the present invention of FIGS. 2A-2B are fastened.

[0048] As shown in FIG. 3A and FIG. 7, a projection array having a sharp horn shape is formed on the front surface (the portion that contacts the golf ball when putting) of the groove member 130 located at the center of the face of the head body 110, and a neck fastening hole 119 is formed on the upper portion of the heel 113 side of the head body. In addition, as shown in FIG. 3B and FIG. 4A, groove fastening holes 115a, 115b are formed in the head body 110, so that the groove member 130 can be fastened by inserting bolts 150a, 150b on the rear surface of the head body.

[0049] The present invention provides a variety of groove members 130 so that golfers can select a suitable protrusion arrangement structure depending on the golfer's gender or physical condition (weight, height, etc.), thereby enabling golfers to select a groove member 130 that suits them and configure a customized putter. Accordingly, the golfer can perform a sensitive putting motion more stably.TABLE 1femalemalelowlowobesityoverweightstandardweightheightweightstandardoverweightobesity51.046.842.536.1150 cm38.345.049.554.052.047.743.436.8151 cm39.045.950.555.153.048.644.237.6152 cm39.846.851.556.254.149.645.138.3153 cm40.547.752.557.255.150.545.939.0154 cm41.348.653.558.356.151.446.839.7155 cm42.149.554.559.457.152.447.640.5156 cm42.850.455.460.558.153.348.541.2157 cm43.651.356.461.659.254.249.341.9158 cm44.452.257.462.660.255.250.242.6159 cm45.153.158.463.761.256.151.043.4160 cm45.954.059.464.862.257.051.944.1161 cm46.754.960.465.963.258.052.744.8162 cm47.455.861.467.064.358.953.645.5163 cm48.256.762.468.065.359.854.446.2164 cm49.057.663.469.166.360.855.347.0165 cm49.758.564.470.267.361.756.147.7166 cm50.559.465.371.368.362.657.048.4167 cm51.360.366.372.469.463.657.849.1168 cm52.061.267.373.470.464.558.749.9169 cm52.862.168.374.571.465.559.550.6170 cm53.663.069.375.672.466.460.451.3171 cm54.363.970.376.773.467.361.252.0172 cm55.164.871.377.874.568.362.152.7173 cm55.865.772.378.875.569.262.953.5174 cm56.666.673.379.976.570.163.854.2175 cm57.467.574.381.077.571.164.654.9176 cm58.168.475.282.178.572.065.555.6177 cm58.969.376.283.279.672.966.356.4178 cm59.770.277.284.280.673.967.257.1179 cm60.471.178.285.381.674.868.057.8180 cm61.272.079.286.482.675.768.958.5181 cm62.072.980.287.583.676.769.759.2182 cm62.773.881.288.684.777.670.660.0183 cm63.574.782.289.685.778.571.460.7184 cm64.375.683.290.786.779.572.361.4185 cm65.076.584.291.887.780.473.162.1186 cm65.877.485.192.988.781.374.062.9187 cm66.678.386.194.089.882.374.863.6188 cm67.379.287.195.090.883.275.764.3189 cm68.180.188.196.191.884.276.565.0190 cm68.981.089.197.2

[0050] Furthermore, when forming the protrusion arrangement of the groove member (130) considering the golfer's physical condition, the statistical data on the standard weights of Korean women and men in Table 1 can be referenced as a means of realistically distinguishing the individual putter's physical condition. For example, in the table below, the standard weight for a Korean woman standing 150 cm is 42.5 kg, and for a Korean man, 45 kg. Furthermore, the standard weight for a Korean woman standing 190 cm is 76.5 kg, and for a Korean man, 81 kg.

[0051] As a preferred embodiment of the present invention, using the standard weight statistics for Korean men and women in relation to their heights in Table 1, the groove member 130 protrusion arrangement can be designed by dividing the weight of men and women into 5 kg units each. Thus, various types of groove member 130 structures can be presented as shown in Table 2 below, allowing for the selection of a structure that matches the golfer's gender and physical condition (weight, height, etc.).

[0052] The golfer's physical condition in Table 2 below is the result of an experiment in which multiple golfers repeatedly performed putting strokes (more than 30 times per person) for each range, with 10 weight ranges from 45 kg to 95 kg for men. It is preferable to design and manufacture the groove so that the length of the base of the pyramid-shaped protrusion varies from 1.2 mm to 3.0 mm depending on the weight range of the male golfer.

[0053] Furthermore, for women, this is the result of an experiment in which multiple golfers repeatedly performed putting strokes (more than 30 times per person) in 10 weight ranges from 40 kg to 90 kg. It is desirable to design and manufacture the grooves so that the length of the base of the pyramid-shaped protrusion varies from 1.1 mm to 2.9 mm depending on the weight range of the female golfer.TABLE 2MaleFemaleSharpness ofSharpness ofWeight, kgneedle, mmnoteWeight, kgneedle, mmnote45.0-50.01.20bottom side40.0-45.01.10bottom side50.1-55.01.40length45.1-50.01.30lengthregularregularfoursidefoursidepyramidpyramid55.1-60.01.60bottom side50.1-55.01.50bottom side60.1-65.01.80length55.1-60.01.70lengthregularregularfoursidefoursidepyramidpyramid65.1-70.02.00bottom side60.1-65.01.90bottom side70.1-75.02.20length65.1-70.02.10lengthregularregularfoursidefoursidepyramidpyramid75.1-80.02.40bottom side70.1-75.02.30bottom side80.1-85.02.60length75.1-80.02.50lengthregularregularfoursidefoursidepyramidpyramid85.1-90.02.80bottom side80.1-85.02.70bottom side90.1-95.03.00length85.1-90.02.90lengthmore than 95.03.20regularmore than 90.03.00regularfoursidefoursidepyramidpyramid

[0054] Meanwhile, the above experimental results are examples based on a pyramid-shaped protrusion shape (where the base is a square, the side faces are all equilateral triangles, and the vertex is located above the center of the base). As another embodiment of the present invention, the configuration of the groove member 130 can be designed and changed in various ways by adopting a different pyramid-shaped protrusion arrangement than the above example, or by changing the degree of sharpness (inner angle of the vertex) of the pyramid-shaped protrusion even if the shape is the same.

[0055] Therefore, if the groove member 130 protrusion arrangement has a different shape, such as a cone, a triangular pyramid, a pentagonal pyramid, or a hexagonal pyramid, or if the degree of sharpness (inner angle of the vertex) of the pyramid-shaped protrusion forming such a variety of protrusion arrangements varies, the standard values for the protrusion base lengths based on the experimental results depending on the golfer's gender and physical condition may differ from those in Table 2.

[0056] In addition, even if it is a square pyramid-shaped protrusion structure, if it is a square pyramid structure of a different shape from the one used in the previous experiment, that is, if the vertex is not located at the exact upper center of the square base but is located at a position that is tilted to one side (for example, tilted upward or downward from the center of the protrusion), the experimental result standard value for the length of the bottom side of the pyramid-shaped protrusion may be different from the above Table 2.

[0057] FIGS. 5A-5B are drawings for explaining an embodiment of a groove member 130 of the present invention of FIG. 4B, wherein FIG. 5A is a drawing showing a plan view and a front structure of a putter groove member 130 of the present invention, and FIG. 5B is a drawing showing a plan view and a back structure of the groove member 130 of FIG. 5A. FIGS. 6A-6B are drawings for explaining in more detail the horn-shaped protrusion array structure formed on the front surface of the groove member 130 of the embodiment of the present invention of FIGS. 5A-5B, FIG. 6A is an enlarged drawing of the horn-shaped protrusion array formed on the front surface of the groove member 130, and FIG. 6B is a partial enlarged view for explaining the structure of two adjacent horn-shaped protrusions 131, 133 indicated by dotted lines in FIG. 6A.

[0058] When putting, the force (impact) applied to the golf ball varies depending on the golfer's body weight. Therefore, in the embodiment of the present invention, taking this into consideration, the size (the product of a bottom and a height) of the pointed horn-shaped protrusion formed on the groove member 130 of the putter head 100, or the inner angle of the vertex of the horn-shaped protrusion (meaning the sharpness of the ‘needle’) is designed and provided in various types depending on the physical condition of the golfer, thereby making it possible to provide a putter with a structure suitable for each golfer. Here, the protrusion forming the protrusion array of the groove member can be designed to have any one shape of a cone or a pyramid (a triangular pyramid, a square pyramid, a pentagonal pyramid, a hexagonal pyramid, etc.), and the angle between the edge 131b of the first protrusion 131 forming the protrusion array and the edge 133a of the second protrusion 133 adjacent to the edge 131b is preferably formed at any one angle of 60 degrees to 120 degrees depending on the physical condition of the golfer or the putter manufacturing process conditions. More preferably, the angle between the edge 131b of the first protrusion 131 of the above-described protrusion array and the edge 133a of the second protrusion 133 adjacent to the edge 131b is 90 degrees, and the head face surface having the groove member 130 having the above-described square pyramid protrusion array and the shaft (center line) are horizontal (180 degrees), so that the ball rotates forward in the direction of travel from the beginning of the putting stroke, preventing the ball from bouncing (hopping) or rotating backward when the groove member and the golf ball come into contact. This is possible because a momentary denting phenomenon occurs at the contact area between the metal head face protrusion and the plastic golf ball during putting stroke. That is, since the protrusion of the head face comes into contact with the golf ball, the corresponding area of the golf ball is temporarily deformed as if the protrusion is stuck, so that the golf ball rotates forward immediately from the moment of hitting the ball without slipping or bouncing at all. At this time, the degree to which the metal head face protrusions are impressed on the surface of the plastic golf ball may vary depending on the impact of the putting motion, the sharpness of the protrusions (the size of the vertex angle), the hardness and elastic modulus of the golf ball, and therefore, assuming that the golf ball-related characteristics do not go beyond the normal range, it is preferable to increase the sharpness of the groove protrusions, i.e., the size of the vertex angle, as the golfer's weight increases, and conversely, to relatively decrease the vertex angle of the protrusions as the golfer's weight decreases.

[0059] In another embodiment of the present invention, as described above, the higher the golfer's weight, the higher the internal angle of the sharp vertex of the groove protrusion. Conversely, the lower the golfer's weight, the lower the internal angle of the vertex of the protrusion. At the same time, at least two types of groove weights are provided so that golfers can select a groove weight that suits their preference depending on the green speed, thereby enabling more precise fitting.

[0060] For example, when the green speed is faster than a predetermined speed, a relatively lighter groove can be selected and installed among the plurality of grooves provided to immediately reduce the impact of the putter on the golf ball at the golf course. Conversely, when the green speed is slower than a predetermined speed, a relatively heavier groove can be selected among the plurality of grooves provided to reduce the impact of the putter on the golf ball, allowing for easy on-site replacement. At this time, the groove types with different weights should be carefully selected based on the golfer's preferences. If desired, it is recommended to have at least five types. For simpler options, it is recommended to design the grooves with two to four different weights. Furthermore, the grooves can be configured differently based on the golfer's preferences (taking into account past groove selection / performance history under similar conditions).

[0061] A fitting information provision system according to a preferred embodiment of the present invention is described.

[0062] Golf club fitting is the process of scientifically analyzing the components of a club, the individual golfer's physical characteristics, and swing style, and adjusting the club to suit the golfer's preferences. As previously discussed, putting accounts for approximately half (½) of the total strokes in a golf game, making putter fitting regarded is important.

[0063] A fitting information provision system according to a preferred embodiment of the present invention utilizes location information such as GPS to accumulate and continuously update putting green data for each golf course, such as the condition of the grass, the condition of the putting green floor, and the humidity, on a golf course operator's server or a separate golf club fitting service provider's server. Specifically, the system can comprehensively consider the physical condition and putting green condition of each golfer during a round and recommend an optimal putter groove module that aligns with their needs.

[0064] In this case, the optimal putter groove selection information provided for each golfer can be recommended based on each golfer's unique information (e.g., smartphone number, QR code, physical condition, etc.). More preferably, the system can automatically match putter groove modules based on real-time location information such as GPS, along with hole-by-hole green speed information for the golf course. The recommended information is then provided to the golfer's terminal (e.g., a general smartphone or a dedicated putter fitting terminal). Here, the information terminal that can be used may be, for example, the location-based service-based golf guidance information golfer terminal of Korean Patent Registration No. 10-1119634, or a publicly known general-purpose portable terminal (such as a smartphone).

[0065] Meanwhile, the function that automatically matches and recommends the optimal groove module for each golfer may be a matching value based on the condition entered (designated) by each golfer, or a value recommended using an artificial intelligence (AI)-based matching technique. Here, AI-based matching refers to the generation of groove recommendation information using the golfer's personal past data, or data accumulated on various golfers with similar physical conditions and putting stroke tendencies. This can utilize deep learning techniques or various publicly known AI (artificial intelligence) techniques.

[0066] Although the embodiments of the present invention have been described with reference to the attached drawings, the present invention is not limited to the specific embodiments described above, and various modifications or changes can be made by a person having ordinary knowledge in the technical field to which the invention pertains without departing from the gist of the present invention claimed in the claims.EXPLANATION OF REFERENCE NUMERALS100: Putter head

[0068] 110: Head body 130: Groove member

[0069] 111: Toe 131, 133: Square pyramid-shaped protrusion

[0070] 113: Heel 135a, 135b: Nut for bolt fastening

[0071] 115a, 115b: Through hole for groove fastening

[0072] 117: Sight for directional aiming

[0073] 119: Neck fastening hole

[0074] 150a, 150b: Bolt for groove fastening

[0075] 200: Shaft 300: GripINDUSTRIAL APPLICABILITY

[0076] The putter according to the present invention as described above has a face horn that touches the surface of a golf ball during a putting motion. By properly embedding the putter, the golf ball immediately rolls forward upon impact, preventing the golf ball from slipping or bouncing, and counteracting the resistance of the grass grain, thereby enhancing directionality and putting distance control.

[0077] The present invention provides a modular design that can be separated and attached to the putter head body. In addition, by designing and manufacturing a variety of horn-shaped protrusions formed on the front surface of the groove member, it broadens the range of choices, allowing golfers to easily secure a customized putter suited to their gender, physical condition, or putting green speed.

[0078] The customized golf putter designed and manufactured according to the present invention has the effect of enhancing putting stability by allowing a momentary denting effect to occur at the contact point between the sharp protrusions (metal) of the groove and the golf ball (plastic) during putting, thereby smoothly rolling the golf ball. This allows the golfer to comfortably maintain direction and control distance.

[0079] The golf putter according to the present invention has an effect of preventing the golf ball from bouncing (hopping) or backspin at the initial contact between the groove member and the ball during putting by configuring the head face surface having a groove structure in which a horn-shaped protrusion array is formed and the shaft centerline at a horizontal angle (180 degrees).

[0080] In addition, the golf putter of the present invention, which can selectively separate and attach a modular groove member, has an economic effect of allowing the golfer to reconfigure the putter to a structure suitable for the changed physical condition by simply replacing the front face portion (partial or entire face surface) of the putter in the existing putter, even if the golfer's physical condition, such as weight, changes, thereby allowing the golfer to obtain a customized putter at a lower cost.

[0081] In addition, by accumulating putting green data for each golf course that changes depending on the weather, such as the condition of the grass on the putting green, the condition of the putting green floor, or humidity (accumulating using location information such as GPS), and selecting a putter groove module that matches the change in green speed determined by the condition of the grass, the condition of the putting green floor, or the weather, such as humidity, during an actual round, it has the effect of making it much easier for golfers to control their distance when putting.

[0082] In addition, it has the effect of automatically matching each golfer's unique information (e.g., smartphone number, QR code, etc.) with the corresponding putter groove module information and providing it to each golfer's personal information terminal (e.g., general smartphone, dedicated putter fitting terminal, etc.) so that it is possible to select the optimal putter groove that comprehensively considers the physical condition and putting green condition of each golfer.

Claims

1. A customized golf putter comprising a head having a groove formed on a face surface that contacts a golf ball during putting, a shaft connected to the head through a neck, and a grip provided at an end of the shaft opposite the head, wherein:(a) the head comprises a head body and a groove member,(b) in order to generate an instantaneous denting phenomenon during putting, a cornu-shaped protrusion array having a sharp needle structure at a vertex thereof is formed on a front surface of the groove member (a portion that contacts the golf ball during putting),(c) the protrusion array of the groove member is configured such that, based on a golfer's gender (male or female) and a golfer's physical condition (at least one of weight or height), at least any one of a size (a product of a base and a height) of the cornu-shaped protrusion, or a degree of sharpness (an inner angle of an vertex) of the cornu-shaped protrusion is designed to differ by predetermined values so as to form a plurality of types, wherein the customized golf putter is provided to allow selection of any one of the plurality of types,(d) the groove member is manufactured in a module form that can be separated from or connected to the head body, and(e) a shape of protrusions forming the protrusion array of the groove member has a shape of either a cone or a pyramid, and an angle between an edge (131b) of a first protrusion (131) forming the protrusion array and an edge (133a) of a second protrusion (133) adjacent to the edge (131b) is formed at any one angle of 60 degrees to 120 degrees.

2. A customized golf putter according to claim 1, wherein sizes of the horn-shaped protrusions forming the protrusion array of the groove member are formed to be different for each weight range for men and women, with a weight range for men ranging from at least 45 kg to 95 kg being divided into multiple stages of predetermined units, and the weight range for women ranging from at least 40 kg to 90 kg being divided into multiple stages of predetermined units.

3. A customized golf putter according to claim 1, wherein: the face surface of the head and the shaft are horizontal (180 degrees), each protrusion forming the protrusion array of the groove member has a square pyramidal shape, and the angle between the edge (131b) of the first protrusion (131) forming the protrusion array and the edge (133a) of the second protrusion (133) adjacent to the edge (131b) forming the protrusion array is 90 degrees.

4. A customized golf putter according to claim 3, wherein pyramid-shaped protrusions are configured such that a body weight is divided into 10 sections in 5 kg units, and edge lengths of bottom surfaces of the pyramid-shaped protrusions are formed for men, from 1.2 mm to 3.0 mm at 0.2 mm intervals, and for women, from 1.1 mm to 2.9 mm at 0.2 mm intervals, respectively.

5. A customized golf putter comprising a head having a groove formed on a face surface that contacts a golf ball during putting, a shaft connected to the head via a neck, and a grip provided at an end of the shaft opposite the head, wherein:(a) the head comprises a head body and a groove member,(b) an array of cornu-shaped protrusions having a sharp needle structure at their vertexes is formed on a front surface of the groove member (a portion that contacts the golf ball during putting) to generate an instantaneous denting effect during putting,(c) an array of protrusions of the groove member is provided such that, depending on a putting green speed standard, at least one of a size (a product of a base and a height) of the cornu-shaped protrusions or a degree of sharpness (an inner angle of an vertex) of the cornu-shaped protrusions is selected from among a plurality of types designed with a predetermined interval between them,(d) the groove member is manufactured in a module form that can be separated from or connected to the head body, and(e) a shape of the protrusions forming a protrusion array of the groove member is either a cone or a pyramid, and an angle between an edge (131b) of a first protrusion (131) forming the protrusion array and an edge (133a) of a second protrusion (133) adjacent to the edge (131b) is formed at any angle between 60 degrees and 120 degrees.

6. A customized golf putter according to claim 5, wherein a size of a horn-shaped protrusion forming the protrusion array of the groove member is formed such that, for men, a weight range of at least 45 kg to 95 kg is divided into multiple step sections of predetermined units, and for women, a weight range of at least 40 kg to 90 kg is divided into multiple step sections of predetermined units, and the size of the horn-shaped protrusion is formed differently for each step section for the male and female weights.

7. A customized golf putter according to claim 5, wherein the face surface of the head and the shaft are horizontal (180 degrees), and each protrusion forming the protrusion array of the groove member has a quadrangular pyramid shape, and the angle between the edge (131b) of the first protrusion (131) forming the protrusion array and the edge (133a) of the second protrusion (133) adjacent to the edge (131b) is 90 degrees.

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