EP3708229A1 - Variable golf putter - Google Patents

Variable golf putter Download PDF

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Publication number
EP3708229A1
EP3708229A1 EP18876403.9A EP18876403A EP3708229A1 EP 3708229 A1 EP3708229 A1 EP 3708229A1 EP 18876403 A EP18876403 A EP 18876403A EP 3708229 A1 EP3708229 A1 EP 3708229A1
Authority
EP
European Patent Office
Prior art keywords
hitting
coupling
coupled
hitting member
putter head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18876403.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Yong Sik Choi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3708229A1 publication Critical patent/EP3708229A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A63B53/042—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0487—Heads for putters
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/06—Heads adjustable
    • A63B53/065—Heads adjustable for putters
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A63B69/3676—Training appliances or apparatus for special sports for golf for putting
    • A63B69/3685—Putters or attachments on putters, e.g. for measuring, aligning
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • A63B2071/0625—Emitting sound, noise or music
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/32—Golf
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials

Definitions

  • the present disclosure relates to a variable golf putter, and more particularly to a variable golf putter capable of replacing and using a hitting surface of the putter and of providing various hitting sensations, thereby efficiently performing putting practice to accurately putt a golf ball on a putting green into a hole cup.
  • a putter is a tool used when directly hitting a ball on a green toward a hole cup using an iron club for putting, and putting means an action of hitting a ball using a putter.
  • the correct putting posture means that both hands holding a grip perform a pendulum motion about the head of a golfer at the time of swing and the head of a putter impacts a ball at the lowest point of the pendulum motion.
  • the ball hit at the posture described above will travel to a desired position.
  • putting practice may be performed using a putter for practice.
  • a conventional putter 1 for golf practice is configured such that a triangular or semicircular hitting protrusion 2A configured to accurately hit a golf ball 2 is formed at the center of the front of a putter head 2.
  • the putter 1 for golf practice has an advantage in that it is possible to perform practice of accurately hitting the golf ball 3 using the semicircular hitting protrusion 2A.
  • the putter head 2 and the hitting protrusion 2A are integrally formed, whereby it is not possible to apply hitting protrusions 2A having various structures.
  • a putting practice member for golf putters is disclosed in Korean Registered Utility Model No. 20-0395835 (published on September 14, 2005 ).
  • fixing plates 1' and 1" are formed at opposite sides of a putting member 1 having a hitting portion 1A having the largest width formed at the middle portion thereof and a center line 101 marked on the upper surface thereof, the putting member 1 is fixed to a putter head 2 using rubber bands 3 in the state in which the fixing plates 1' and 1" are in contact with the putter head 2.
  • the putting practice member having the structure described above is configured to replace the putting member 1. Since the putting member 1 is coupled to the putter head using the rubber bands 3, however, it is not possible to maintain strong force of coupling therebetween.
  • the putter head is made of a single material and is formed in a single shape, whereby it is not possible to learn various hitting sensations.
  • a variable golf putter including a putter head coupled to the lower end of a shaft, the putter head having a head hitting surface, and a hitting member selectively coupled to the putter head, wherein a through hole, through which a fastening bolt extends upwards from the bottom surface thereof, is formed in the putter head so as to be stepped, an incision portion configured to open a portion of the upper surface of the putter head in a hitting direction is formed in the head hitting surface corresponding to the through hole, the hitting member is formed in a golf ball shape and has a hitting surface formed on the outer circumferential surface thereof, a seating surface and a supporting surface supported by an edge of the upper surface so as to be seated on the upper surface are formed at the bottom surface of the hitting member so as to be stepped, a screw fastening recess, to which the fastening bolt is coupled by fastening, is formed in the seating surface, the hitting member is replaceably coupled to the putter
  • a variable golf putter including a putter head coupled to the lower end of a shaft, the putter head having a head hitting surface, and a hitting member selectively coupled to the putter head, wherein a through hole, through which a fastening bolt extends upwards from the bottom surface thereof, is formed in the putter head so as to be stepped, an incision portion configured to open a portion of the upper surface of the putter head in a hitting direction is formed in the head hitting surface corresponding to the through hole, a triangular to octagonal coupling protrusion protrudes upwards from the upper surface in which the through hole is formed, the hitting member is formed in a golf ball shape or a polygonal shape, hitting surfaces having different shapes and different sizes are formed on the outer surface of the hitting member, a seating surface, which is seated on the upper surface, is formed at the bottom surface of the hitting member, a triangular to octagonal coupling recess is
  • a hitting material made of a material different from the material of the hitting member may be provided integrally at the spherical hitting surface or the planar hitting surface, and a hitting material recess formed in the spherical hitting surface or the planar hitting surface may be filled with the hitting material, or the hitting material may be integrally formed with the hitting member through insert injection molding.
  • the lower end of the shaft may be formed in a polygonal shape, polygonal coupling portions, to each of which the lower end of the shaft is coupled, may be formed at opposite sides of the putter head such that one of the polygonal coupling portions is selected and used by a left-handed person or a right-handed person, and the lower end of the shaft and the coupling portion may be coupled to each other via a bolt fastened from the bottom surface of the putter head in the state in which the lower end of the shaft is fitted in the coupling portion such that the coupling angle therebetween is adjusted.
  • a thickness adjustment recess may be formed around the coupling recess of the hitting member, and the thickness adjustment recess may be formed so as to have different widths such that the hitting surfaces have different thicknesses based on the coupling surfaces, whereby different hitting sensations and hitting sounds are generated.
  • a variable golf putter including a putter head having a coupling bar, one end of which is coupled to the lower end of a shaft, the coupling bar extending in a horizontal direction, and a hitting member having a hitting surface configured to hit a golf ball, the hitting surface being formed on one side thereof, and a spherical or planar practice hitting surface formed on the other side thereof, the hitting member being coupled to the coupling bar of the putter head, wherein the hitting member is formed as a single body or is divided into two or five parts having different sizes and shapes such that the hitting surface and the practice hitting surface are selected, the hitting member being coupled to the coupling bar, the lower end of the shaft is formed in a polygonal shape, a polygonal coupling portion, to which the lower end of the shaft is coupled, is formed at the putter head, and the lower end of the shaft and the coupling portion are coupled to each other via a bolt fastened from the bottom surface of the putter head in
  • a hitting material made of a material different from the material of the hitting member may be provided integrally at the hitting surface and the practice hitting surface, and hitting material recesses formed in the hitting surface and the practice hitting surface may be filled with the hitting material, or the hitting material may be integrally formed with the hitting member through insert injection molding.
  • the divided hitting members may be made of different materials.
  • a spherical hitting portion having curvature smaller than curvature of the outer circumferential surface of the hitting member may be formed at the practice hitting surface, and a spherical hitting surface may be formed at the spherical hitting portion.
  • a variable golf putter including a putter head coupled to the lower end of a shaft, wherein the putter head includes a first hitting member which is formed in a spherical shape having a golf ball shape and to which the lower end of the shaft is coupled, a second hitting member which is formed in a spherical shape having a golf ball shape and which is coupled to a side surface of the first hitting member in a horizontal direction so as to be located on a straight line together with the first hitting member, a third hitting member which is formed in a spherical shape having a golf ball shape and which is coupled to a side surface of the second hitting member in the horizontal direction so as to be located on a straight line together with the first hitting member and the second hitting member, and a coupling rod having one end to which a nut is fastened after the coupling rod extends through the first hitting member, the second hitting member, and the third hitting member and the other end to which the shaft is fast
  • a position changing means configured to change positions of the second hitting member and the third hitting member, to select the spherical hitting surface and the planar hitting surfaces, and to change the hitting surfaces depending on whether a user is a right-handed person or a left-handed person may be provided at each of the first hitting member, the third hitting member, and opposite surfaces of the second hitting member that face the first hitting member and the third hitting member, and the position changing means may include a polygonal connection and coupling member having a predetermined length and a polygonal positioning recess formed in a corresponding one of opposite surfaces of the first hitting member, the second hitting member, and the third hitting member such that the connection and coupling member is coupled to the positioning recess by insertion.
  • a variable golf putter including a hitting member having one end coupled to the lower end of a shaft, a hitting surface configured to hit a golf ball being formed on one side of the hitting member, a spherical or planar practice hitting surface being formed on the other side of the hitting member, wherein the lower end of the shaft is formed in a polygonal shape, a polygonal coupling portion, to which the lower end of the shaft is coupled, is formed at the hitting member, and the lower end of the shaft and the coupling portion are coupled to each other via a bolt fastened from the bottom surface of the hitting member in the state in which the lower end of the shaft is fitted in the coupling portion such that the coupling angle therebetween is adjusted.
  • a variable golf putter including a putter head having a shaft coupling hole, to which the lower end of a shaft is coupled, and a head hitting surface, and a hitting member selectively coupled to the putter head, wherein a through hole, through which a fastening bolt extends upwards from the bottom surface thereof, is formed in the putter head so as to be stepped, an incision portion configured to open a portion of the upper surface of the putter head in a hitting direction is formed in the head hitting surface corresponding to the through hole, a coupling portion is formed around the through hole, a hitting surface is formed at one or each of outer surfaces of the hitting member, a coupling recess, to which the coupling portion is coupled by insertion, is formed in the bottom surface of the hitting member so as to be open downwards, a screw fastening recess is formed in the bottom surface of the coupling recess, the fastening bolt is fastened to the screw fastening reces
  • the hitting sound generation recess may be formed in a region corresponding to the hitting surface or a region of the hitting surface corresponding to the positive hitting point so as to be open toward the bottom, the side, or the top of the hitting member or toward the coupling recess.
  • the hitting sound generation recess may be filled with a metal material or a synthetic resin material different from a material of the hitting member, the metal material or the synthetic resin material may be coupled to the hitting sound generation recess by insertion, or the metal material or the synthetic resin material may be integrally formed with the hitting member through insert injection molding.
  • the hitting member may be formed in the shape of a sphere, a hemisphere, or a combination of a polygon and a sphere, and a mark configured to indicate the hitting direction may be formed on the outer circumferential surface of the hitting member in the form of a plurality of recesses or a line.
  • a decorative member for decoration may be provided at the upper surface of the hitting member, and a portion of the decorative member may be coupled to the hitting member by insertion, or a fastening portion provided at the decorative member may be coupled to a screw hole formed in the upper surface of the hitting member by fastening.
  • Shaft coupling holes of the putter head may be formed in opposite sides of the putter head such that a right-handed person or a left-handed person selects one of the shaft coupling holes and couples the shaft to the selected shaft coupling hole.
  • the hitting member is formed in the shape of a sphere, a hemisphere, or a combination of a polygon and a sphere, the hitting surface is formed at the outer circumference of the hitting member, and the distance between the center of the hitting member and a hitting position is preset, a hemispherical auxiliary member may be formed at the hitting surface so as to protrude and an auxiliary hitting surface may be formed at the hemispherical auxiliary member such that the area of the hitting surface is increased or decreased.
  • the hitting member has various hitting surfaces, whereby it is possible to putt and to perform putting practice in various manners.
  • a hitting material made of a material different from the material of the hitting member is formed integrally with the hitting member, whereby it is possible to provide various hitting sensations and thus to efficiently perform putting practice.
  • a hitting sound generation recess is formed in the hitting member such that a bright hitting sound is generated when a golf ball is hit at a positive hitting point of the hitting surface, whereby it is possible to easily recognize that correct hitting has been performed.
  • the present disclosure provides a variable golf putter including a putter head coupled to the lower end of a shaft, the putter head having a head hitting surface, and a hitting member selectively coupled to the putter head, wherein a through hole, through which a fastening bolt extends upwards from the bottom surface thereof, is formed in the putter head so as to be stepped, an incision portion configured to open a portion of the upper surface of the putter head in a hitting direction is formed in the head hitting surface corresponding to the through hole, the hitting member is formed in a golf ball shape and has a hitting surface formed on the outer circumferential surface thereof, a seating surface and a supporting surface supported by an edge of the upper surface so as to be seated on the upper surface are formed at the bottom surface of the hitting member so as to be stepped, a screw fastening recess, to which the fastening bolt is coupled by fastening, is formed in the seating surface, the hitting member is replaceably coupled to the putter head via the fastening bolt in the state of being
  • FIG. 3 is an exploded perspective view showing a variable golf putter according to a first embodiment of the present disclosure
  • FIGS. 4 , 5 , and 6 are perspective views showing other embodiments of a hitting member shown in FIG. 3
  • FIG. 7 is a sectional view showing a coupling state of the golf putter for practice shown in FIG. 3
  • FIG. 8 is a plan view showing a use state of the golf putter for practice shown in FIG. 3 .
  • variable golf putter As shown in FIGS. 3 to 8 , the variable golf putter according to the first embodiment of the present disclosure includes a putter head 20 and a hitting member 30 selectively coupled to the putter head 20.
  • the putter head 20 is coupled to the lower end 12 of a shaft 10, and has a head hitting surface 24 formed in a hitting direction.
  • the hitting member 30 is formed in a spherical shape, such as a golf ball shape, and has a hitting surface 34 formed on the outer circumferential surface thereof.
  • a seating surface 32 and a supporting surface 32A supported by the edge of the upper surface 23 of the putter head 20 so as to be seated on the upper surface 23 are formed at the bottom surface of the hitting member 30 so as to be stepped.
  • the hitting member 30 is replaceably coupled to the putter head 20 via the fastening bolt 40 in the state of being seated on the surface 23 such that a portion of the hitting surface 34 of the hitting member 30 protrudes through the incision portion 26 more than the head hitting surface 23.
  • the hitting surface 34 of the hitting member 30 is constituted by a spherical hitting surface 34A having the same curvature as a golf ball or a planar hitting surface 34B.
  • a plurality of hitting members 30 is provided by area of the planar hitting surface 34B, and is selectively coupled to the putter head 20.
  • a hitting material 39 made of a material different from the material of the hitting member 30 is provided integrally at the spherical hitting surface 34A or the planar hitting surface 34B.
  • the incision portion 26 configured to open a portion of the upper surface 23 of the putter head 20 in the hitting direction is formed in the central region of the head hitting surface 24 corresponding to the through hole 22, i.e. equivalent to the region in which the through hole 22 is formed, as shown in FIG. 3 .
  • the incision portion 26 is configured to expose a portion of the hitting surface 34 forwards (in the hitting direction) when the hitting member 30 is coupled to the upper surface 23 of the putter head 20.
  • the through hole 22 is formed so as to be stepped is that it is necessary to prevent a head portion of the fastening bolt 40 from protruding outwards from the bottom surface of the putter head 20 when the fastening bolt 40 is coupled to the hitting member 30 through the through hole 22.
  • the through hole 22 and the incision portion 26 are formed in the middle (the central region) of the putter head 20.
  • the hitting member 30 is configured to be selectively coupled to or separated from the putter head 20.
  • the hitting member 30 is formed so as to have the same shape as a golf ball and to have a size equal or similar to the size of the golf ball, as shown in FIG. 3 .
  • the spherical or planar hitting surface 34 is formed on the outer circumferential surface of the hitting member 30.
  • the seating surface 32, on which the upper surface 23 of the putter head 20 is seated, is formed on the bottom surface of the hitting member 30, and the supporting surface 32A, which is supported by the edge 23A of the upper surface 23 when the seating surface 32 is seated on the upper surface 23, is formed at one side of the seating surface 32 so as to be stepped.
  • This structure is configured to stably absorb impact generated when hitting a golf ball using the hitting surface 34 by the provision of the supporting surface 32A.
  • the screw fastening recess 32B to which the fastening bolt 40 is coupled by fastening, is formed in the seating surface 32, and has a female screw thread formed therein.
  • the hitting member 30 configured as described above is replaceably coupled to the putter head 20 via the fastening bolt 40 in the state of being seated on the surface 23 such that a portion of the hitting surface 34 of the hitting member 30 protrudes through the incision portion 26 more than the head hitting surface 23.
  • the head portion of the fastening bolt 40 is seated in the stepped through hole 33, and therefore the head portion is prevented from protruding outwards from the bottom surface of the putter head 20 when the fastening bolt 40 is coupled to the screw fastening recess 32B from the bottom surface of the putter head 20 through the through hole 22.
  • the hitting surface 34 of the hitting member 30 is constituted by a spherical hitting surface 34A having the same curvature as a golf ball or a planar hitting surface 34B.
  • a plurality of hitting members 30 is preferably provided by area of the planar hitting surface 34B. That is, in the case in which a plurality of hitting members 30 having different sizes of planar hitting surfaces 34B is provided, a user may select a hitting member 30 having a desired size of a planar hitting surface 34B, may couple the selected hitting member to the putter head 20, and may use the putter head.
  • a hitting material 39 made of a material different from the material of the hitting member 30 is provided integrally at the spherical hitting surface 34A or the planar hitting surface 34B of the hitting member 30. That is, as shown in FIGS. 5 , 6 , and 7 , a plurality of hitting material recesses 31 each having a predetermined depth is formed in the spherical hitting surface 34A or the planar hitting surface 34B, and the hitting material recesses 31 are filled with a hitting material 39 made of a material different from the material of the hitting member 30 so as to be integrated, or the hitting material is integrally formed with the hitting member 30 through insert injection molding.
  • the hitting material recesses 31 are filled with a material other than iron, such as copper or aluminum, or integration between the hitting member and the hitting material is achieved through insert injection molding.
  • the hitting material recesses 31 are formed in the spherical hitting surface 34A or the planar hitting surface 34B, and a hitting material 39 made of a material different from the material of the hitting member 30 is provided integrally in the hitting material recesses 31, whereby it is possible to provide various hitting sensations and hitting sounds to a user who putts.
  • the hitting material recesses 31 are filled with the hitting material 39, or the hitting material is integrally formed with the hitting member 30 through insert injection molding.
  • the present disclosure is not limited thereto.
  • protrusions 31-1 may be formed on the bottoms of the hitting material recesses 31, and gaps between the protrusions 31-1, i.e. the hitting material recesses 31, may be filled with the hitting material 39 so as to be integrated, or the hitting material may be integrally formed with the hitting member through insert injection molding.
  • variable golf putter has a structure in which the lower end of the shaft 10 is formed in a polygonal shape and a polygonal coupling portion 21, to which the lower end 12 of the shaft 10 is coupled, is formed at the putter head 20.
  • the lower end 12 and the coupling portion 21 may be formed so as to have a sawtooth structure (spline coupling), rather than the polygonal structure, so as to be coupled with each other.
  • the lower end 12 of the shaft 10 and the coupling portion 21 are coupled to each other via a bolt (not shown) fastened to the lower end 12 of the shaft 10 through the bottom surface of the putter head 20 or the side surface of the upper end of the putter head at which the coupling portion 21 is formed in the state in which the lower end 12 is fitted in the coupling portion 21 such that the coupling angle therebetween is adjusted.
  • the lower end 12 and the coupling portion 21 may be securely coupled to each other via a separate fixing means in the state in which the lower end is fitted in the coupling portion.
  • each of the lower end 12 of the shaft 10 and the coupling portion 21 is formed so as to have a polygonal structure or a sawtooth structure, as described above, it is possible to adjust the coupling angle of the putter head 20 having the hitting member 30 coupled thereto relative to the shaft 10, as shown in FIG. 6 .
  • each of the lower end 12 and the coupling portion 21 has a microscale sawtooth structure, it is possible to adjust the angle of the putter head 20 in microscale.
  • variable golf putter according to the first embodiment of the present disclosure configured as described above will be described.
  • a user selects a hitting member 30 having one of different hitting surfaces 34, e.g. a hitting member 30 having a spherical hitting surface 34A, and couples the selected hitting member to the upper surface 23 of the putter head 20, or selects a hitting member 30 having a planar hitting surface 34B, and couples the selected hitting member to the upper surface 23 of the putter head 20. That is, the user selects a hitting member 30 having a desired hitting surface 34, and couples the selected hitting member to the putter head 20 using the fastening bolt 40.
  • the user may perform putting practice using the hitting member 30, since the hitting surface 34 protrudes in the hitting direction through the incision portion 26 more than the hitting surface 24 of the putter head 20 when the hitting member 30 is coupled to the putter head 20.
  • the user may couple the hitting member 30 having the spherical hitting surface 34A to the putter head 20, or may select the hitting member 30 having the planar hitting surface 34B and may couple the selected hitting member to the putter head 20, whereby it is possible to efficiently perform putting practice using various hitting surfaces.
  • the seating surface of the hitting member 30 is seated on the upper surface 23 of the putter head 20, the supporting surface 32A is supported by the edge of the upper surface 23, and the fastening bolt 40 is fastened to the coupling recess 32V through the through hole 22, a coupling state between the hitting member 30 and the putter hand 20 is securely maintained. Furthermore, the hitting member 30 does not move freely at the time of putting practice, and, since the supporting surface 32A is supported by the edge 23A of the upper surface 23, stable hitting is possible without free movement at the time of hitting a golf ball.
  • a hitting material 39 made of a different material than the hitting member 30 is provided integrally at the hitting surface 34, it is possible to provide various hitting sensations and hitting sounds to the user.
  • FIGS. 9 to 12 are views showing a variable golf putter according to a second embodiment of the present disclosure.
  • FIG. 13 is a schematic plan view showing a use state of the variable golf putter shown in FIGS. 9 to 12 .
  • variable golf putter includes a putter head 20 coupled to the lower end 12 of a shaft 10, the putter head having a head hitting surface 24, and a hitting member 30 selectively coupled to the putter head 20.
  • An incision portion 26 configured to open a portion of the upper surface 23 of the putter head 20 in the hitting direction is formed in the central region of the head hitting surface 24 corresponding to the through hole 22, i.e. equivalent to the region in which the through hole 22 is formed.
  • a triangular to octagonal coupling protrusion 27 protrudes upwards from the upper surface 23 in which the through hole 22 is formed.
  • the hitting member 30 is formed in a golf ball shape or a polygonal shape, and hitting surfaces 34 having different shapes and different sizes are formed on the outer surface of the hitting member.
  • a seating surface 32 which is seated on the upper surface 23, is formed at the bottom surface of the hitting member.
  • a triangular to octagonal coupling recess 32C is formed in the seating surface 32 such that the coupling protrusion 27 is inserted into and coupled to the coupling recess when the seating surface is seated on the upper surface 23, and has coupling surfaces 32C-1 having the same directions as the hitting surfaces 34.
  • the coupling protrusion 27 is inserted into and coupled to the coupling recess 32C in the state in which the orientation of the hitting member 30 is set such that a hitting surface 34 selected from among the hitting surfaces 34 of the hitting member 30 is exposed through the incision portion 26, and the fastening bolt 40 is fastened to the screw fastening recess 32B of the coupling recess 32C through the through hole 22.
  • the hitting member 30 is coupled to the putter head 20.
  • the hitting surface 34 of the hitting member 30 is constituted by a spherical hitting surface 34A having the same curvature as a golf ball or a planar hitting surface 34B.
  • a plurality of hitting members 30 is provided by size of the planar hitting surface 34B, and is selectively coupled to the putter head 20.
  • This embodiment is identical to the previous embodiment except that a hitting material 39 made of a material different from the material of the hitting member 30 is provided integrally at the spherical hitting surface 34A or the planar hitting surface 34B.
  • the coupling protrusion 27 is described as being formed in a quadrangular shape.
  • the present disclosure is not limited thereto, and the coupling protrusion may be formed in any one of triangular to octagonal shapes.
  • the coupling protrusion 27 is formed on the putter head 20
  • the coupling recess 32C is formed in the hitting member 30, and the hitting member 30 is coupled to the putter head via the coupling protrusion 27, as described above, it is possible to more stably maintain a coupling state between the hitting member and the putter head 20.
  • the coupling protrusion 27 is inserted into the coupling recess 32C of the hitting member 30 in such a manner that the coupling surface 32C-1 of the coupling recess 32C coinciding with the spherical hitting surface 34A faces the incision portion 26 such that the spherical hitting surface 34A is exposed through the incision portion 26, and then fastening is performed using the fastening bolt 40, whereby it is possible to achieve secure coupling and to select the hitting surface 34.
  • the user may select a preferred hitting surface 34, from among the plurality of hitting surfaces 34, and may couple the coupling protrusion 27 to the coupling recess 32C in such a manner that the coupling surface 32C-1 coinciding with the selected hitting surface 34 faces the incision portion 26 such that the selected hitting surface 34 is exposed through the incision portion 26. Consequently, it is possible for the user to perform hitting practice using the selected hitting surface 34.
  • each hitting surface 34 is configured to have a simple structure and to be selectively used, as described above, it is possible for the user to select and use one of the hitting surfaces 34 having various shapes and sizes.
  • the size of the hitting surface 34 may be selected, and then the hitting member 30 may be coupled to the putter head 20, whereby it is possible to learn various hitting sensations.
  • hitting material recesses 31 are formed in the hitting surface 34, a hitting material 39 made of a material different from the material of the hitting member 30 is provided integrally in the hitting material recesses 31, as in the previous embodiment.
  • a hitting material 39 made of a material different from the material of the hitting member 30 is provided integrally in the hitting material recesses 31, as in the previous embodiment.
  • FIGS. 11 and 13 show another embodiment of the variable golf putter according to the second embodiment of the present disclosure shown in FIGS. 9 and 10 .
  • a hitting member 30 according to another embodiment is identical to the hitting member according to the previous embodiment except that a thickness adjustment recess 37 configured to make the thicknesses of the hitting surfaces 34 different from each other is formed around the coupling recess 32C. That is, the thickness adjustment recess 37 is formed around the coupling recess 32C of the hitting member 30, and the thickness adjustment recess 37 is formed so as to have different widths W such that the hitting surfaces 34 have different thicknesses based on the coupling surfaces 32C-1.
  • the thickness of each of the hitting surfaces 34 means the thickness between each of the hitting surfaces 34 and a corresponding one of the coupling surfaces 32C-1.
  • the thickness adjustment recess 37 is formed so as to have different widths W such that the hitting surfaces 34 have different thicknesses.
  • the user selects one of the hitting surfaces 34 and hits a golf ball, therefore, it is possible to provide various hitting sensations and hitting sounds depending on the thickness of the hitting surface 34.
  • FIG. 12 shows yet another embodiment of the variable golf putters according to the first to second embodiments of the present disclosure shown in FIGS. 3 to 9 .
  • the variable golf putter has a seating recess 25 formed in the middle of the putter head 20 so as to be open in the hitting direction and in the upward direction, the seating recess 25 having a through hole 22 formed therethrough.
  • This embodiment is identical to the previous embodiments except that, in the state in which a hitting member 30 having different shapes and sizes of hitting surfaces 34 is inserted into and seated in the seating recess 25, the hitting member 30 is integrally coupled to the putter head 20 via a fastening bolt 40 fastened to the bottom surface of the hitting member 30 through the through hole 22 from below.
  • the seating recess 25 is formed so as to have the same shape as the hitting member 30 such that the hitting member 30 is inserted into and stably seated in the seating recess.
  • the hitting member 30 is inserted into the seating recess 25 of the putter head 20 and is coupled to the putter head via the fastening bolt 40, as described above, it is possible to maintain a stable coupling state between the hitting member 30 and the putter head 20.
  • FIG. 14 is a perspective view showing a variable golf putter according to a third embodiment of the present disclosure.
  • variable golf putter according to the third embodiment is identical to the variable golf putters according to the previous embodiments except that the variable golf putter includes a hitting member 30 having one end coupled to the lower end 12 of a shaft 10, wherein a hitting surface 34 configured to hit a golf ball is formed on one side of the hitting member, and a spherical or planar practice hitting surface 34-1 is formed on the other side of the hitting member. That is, the variable golf putter according to the third embodiment has a structure in which the lower end 12 of the shaft 10 is coupled to one end of the hitting member 30 having the hitting surface 34 and the practice hitting surface 34-1 formed on opposite sides thereof.
  • the lower end 12 of the shaft 10 is formed in a polygonal shape, and a polygonal coupling portion 33, to which the lower end 12 of the shaft 10 is coupled, is formed at the hitting member 30.
  • the lower end 12 of the shaft 10 and the coupling portion 33 are coupled to each other through fastening using a bolt 40A fastened from the bottom surface of the hitting member 30 in the state in which the lower end 12 of the shaft 10 is fitted in the coupling portion 33 such that the coupling angle therebetween is adjusted.
  • the hitting material 39 described above may be provided in the hitting surface 34 or the practice hitting surface 34-1.
  • the hitting member 30 is directly coupled to the shaft 10, as described above, it is not necessary to provide a separate putter head 20.
  • the hitting surface 34 is formed on one surface of the hitting member 30 and the practice hitting surface 34-1 is formed on the other surface of the hitting member, as described above, it is possible to provide convenience in which the user may hit a golf ball (putt) using the hitting surface 34 and may perform hitting practice using the practice hitting surface 34-1.
  • FIG. 15 is an exploded perspective view showing a variable golf putter according to a fourth embodiment of the present disclosure
  • FIG. 16 is a sectional view showing a coupling state of the variable golf putter shown in FIG. 15 .
  • the variable golf putter includes a putter head 20 having a coupling bar 210, one end of which is coupled to the lower end 12 of a shaft 10, the coupling bar extending in a horizontal direction, and a hitting member 30 having a hitting surface 34 configured to hit a golf ball, the hitting surface being formed on one side thereof, and a spherical or planar practice hitting surface 34-1 formed on the other side thereof, the hitting member being coupled to the putter head 20 and having a polygonal coupling portion 33.
  • the hitting member 30 is formed as a single body, and is coupled to the coupling bar 210 of the putter head 20.
  • the lower end 12 of the shaft 10 is formed in a polygonal shape and is inserted into the coupling portion 33 of the hitting member 30, and a fastening bolt 40A, which is inserted into a fastening bolt through-hole 21A formed in the putter head 20, is fastened to a screw hole (not shown) formed in the inner circumferential surface of the lower end 12 fitted in the coupling portion 33.
  • the shaft 10, the hitting member 30, and the putter head 20 are integrated.
  • the lower end 12 and the putter head 20 may be coupled to each other through a fixing structure other than the fastening bolt 40A.
  • the coupling angle between the hitting member 30 and the shaft 10 based on the coupling angle between the lower end 12 and the coupling portion 33. That is, the angle at which the lower end 12 of the shaft 10 is inserted into the polygonal coupling portion 33 is adjusted, and then the bolt 40A is fastened to the lower end 12 from the lower surface of the putter head 20, whereby the coupling angle between the hitting member and the shaft 10 is set.
  • This embodiment is identical to the previous embodiments except for the coupling structure described above.
  • a hitting material 39 made of a material different from the material of the hitting member 30 may be provided in the hitting surface 34 and the practice hitting surface 34-1, as previously described.
  • an insertion recess 35 into which the coupling bar 210 is inserted, is formed in the bottom surface of the hitting member 30, and the fastening bolt 40 is fastened to a screw hole formed in the insertion recess 35 of the hitting member 30 through the coupling bar 210 from the lower surface thereof in the state in which the coupling bar 210 is inserted in the insertion recess 35, whereby the hitting member 30 and the coupling bar 210 may be securely coupled to each other.
  • the hitting member 30 is coupled to the coupling bar 210 of the putter head 20 through a fitting structure and a fastening structure, whereby it is possible to select and use various shapes and sizes of hitting members 30.
  • the hitting surface 34 is formed on one surface of the hitting member 30 and the practice hitting surface 34-1 is formed on the other surface of the hitting member, it is possible to provide convenience in which the user may hit (putt) a golf ball using the hitting surface 34 and may perform hitting practice using the practice hitting surface 34-1.
  • FIG. 17 is an exploded perspective view showing another embodiment of the variable golf putter shown in FIG. 15 .
  • FIG. 17 another embodiment of the variable golf putter shown in FIGS. 15 and 16 is identical to the fourth embodiment described above except that two to five hitting members 30 having different sizes and shapes are individually formed and are coupled to the coupling bar 210 such that the hitting surface 34 and the practice hitting surface 34-1 are selected.
  • insertion recesses 35 into which the coupling bar 210 is inserted so as to be coupled thereto, are formed in the bottom surfaces of the individual hitting members 30.
  • the individual hitting members 30 may be made of different materials. Since the hitting members 30 are made of different materials, as described above, it is possible for the user to select a hitting member 30 made of a material that provides a desired hitting sensation and to perform hitting practice.
  • the hitting members 30 are individually formed so as to have different sizes and shapes, as shown in FIG. 17 , it is possible to provide convenience in which the user may select a hitting member 30 according to personal preference and may perform hitting (putting) practice.
  • a hitting material 39 made of a material different from the material of the hitting member 30 may be provided at the hitting surface 34.
  • the hitting material 39 may be made of copper or aluminum, whereby it is possible to provide various hitting sensations to the user. That is, hitting material recesses 31 are formed in the hitting surface 34 and the practice hitting surface 34-1, and the hitting material recesses 31 are filled with a metal material or a hard synthetic resin material different from the material of the hitting member 30, or the hitting material is integrally formed with the hitting member through insert injection molding.
  • protrusions 31-1 may be formed on the bottoms of the hitting material recesses 31 formed in the hitting surface 34, and gaps between the protrusions 31-1, i.e. the hitting material recesses 31, may be filled with the hitting material 39 so as to be integrated, or the hitting material may be integrally formed with the hitting member through insert injection molding.
  • the hitting material 39 is provided integrally at the hitting surface 34 and the practice hitting surface 34-1.
  • the hitting surface having the hitting material 39 therefore, it is possible to obtain a hitting sensation and hitting sound different from when the user hits the golf ball using a hitting surface 34 made of only a single metal.
  • FIG. 20 is a view showing another embodiment of the hitting member shown in FIG. 17 .
  • this embodiment is identical to the previous embodiments except that, in the case in which the hitting member 30 is formed so as to have a spherical shape (a spherical surface) and a practice hitting surface 34 is formed at the outer circumference 34-3 of the spherical shape, a spherical hitting portion 34-2 having curvature smaller than the curvature of the outer circumference 34-3 of the hitting member 30 is formed at the practice hitting surface 34, and an auxiliary hitting surface 34-5 is formed at the spherical hitting portion 34-2.
  • a spherical hitting portion 34-2 having curvature smaller than the curvature of the outer circumference 34-3 of the hitting member 30 is formed at the practice hitting surface 34
  • an auxiliary hitting surface 34-5 is formed at the spherical hitting portion 34-2.
  • the spherical hitting portion 34-2 which has small curvature, is formed at the practice hitting surface 34 of the outer circumference 34-3 of the hitting member 30, and the auxiliary hitting surface 34-5 is formed at the spherical hitting portion 34-2, whereby the distance between the center of the insertion recess 35 and an imaginary hitting surface is preset, it is possible to increase or decrease the area of the auxiliary hitting surface 34-5.
  • the distance between the center of the insertion recess 35 and the imaginary hitting surface is preset, it is possible to form a hitting member 30 configured such that the area of the hitting surface is increased or to form a hitting member 30 configured such that the area of the hitting surface is decreased without changing the distance between the center of the insertion recess 35 and the imaginary hitting surface.
  • the spherical hitting portion 34-2 having curvature smaller than the curvature of the hitting member 30 is formed at the practice hitting surface 34 so as to be protrude, and the auxiliary hitting surface 34-5 is formed at the hitting region of the spherical hitting portion 34-2, as shown in FIG. 20 .
  • a decorative member J made of a jewel or a quasi-jewel, such as sapphire or cubic zirconia, in order to increase the value of the hitting member 30 and to improve visibility of the hitting member, may be provided at the upper surface of the hitting member 30.
  • the decorative member J may have a screw portion configured to be fastened to a screw hole formed in the hitting member 30 such that the decorative member is coupled to the hitting member 30 through a fastening structure, or may be coupled to the hitting member through a separate coupling structure.
  • FIG. 21 is an exploded perspective view showing a variable golf putter according to a fifth embodiment of the present disclosure
  • FIG. 22 is a sectional view showing a coupling state of the variable golf putter shown in FIG. 21
  • FIG. 23 is a plan view showing a use state of the variable golf putter shown in FIG. 21 .
  • variable golf putter according to the fifth embodiment is identical to the variable golf putters according to the previous embodiments described above except for the following construction.
  • the variable golf putter includes a putter head 200 coupled to the lower end 12 of a shaft 10, wherein the putter head 200 includes a first hitting member 300A which is formed in a spherical shape, such as a golf ball shape, and to which the lower end of the shaft 10 is coupled, a second hitting member 300B which is formed in a spherical shape, such as a golf ball shape, and which is coupled to the side surface of the first hitting member 300A in a horizontal direction so as to be located on a straight line together with the first hitting member 300A, a third hitting member 300C which is formed in a spherical shape, such as a golf ball shape, and which is coupled to the side surface of the second hitting member 300B in the horizontal direction so as to be located on a straight line together with the first hitting member 300A and the second hitting member 300B, and a coupling rod 400 having one end to which a nut is fastened after the coupling rod extends through the first hitting member 300A, the second hitting member 300B
  • a spherical hitting surface 320 having the same curvature as a golf ball and planar hitting surfaces 340 are formed at each of the first hitting member 300A, the second hitting member 300B, and the third hitting member 300C, wherein the planar hitting surfaces 340 are formed so as to have different sizes. That is, the outer circumferential surface of each of the hitting members 300A, 300B, and 300C is divided into four parts such that one of the parts constitutes a spherical hitting surface 320 and the other parts constitute planar hitting surfaces 340 having different sizes.
  • the reason that a single hitting member is formed so as to have a plurality of different hitting surfaces as described above is that it is necessary to allow a user to select and use hitting surfaces having various sizes and shapes (a spherical shape or a planar shape).
  • the first hitting member 300A, the second hitting member 300B, and the third hitting member 300C are made of different materials, and a hitting material 390 made of a material different from the materials of the first hitting member 300A, the second hitting member 300B, and the third hitting member 300C is provided integrally at the spherical hitting surface 320 and the planar hitting surfaces 340, wherein hitting material recesses 310 formed in the spherical hitting surface 320 and the planar hitting surfaces 340 are filled with the hitting material 390, or the hitting material is integrally formed with the hitting members through insert injection molding.
  • a position changing means 500 configured to change positions of the second hitting member 300B and the third hitting member 300C, to select the spherical hitting surface 320 and the planar hitting surfaces 340, and to change the hitting surfaces 320 and 340 depending on whether the user is a right-handed person or a left-handed person is provided at each of the first hitting member 300A, the third hitting member 300C, and opposite surfaces of the second hitting member 300B that face the first hitting member 300A and the third hitting member 300C.
  • the position changing means 500 includes a triangular to octagonal connection and coupling member 510 having a predetermined length and a triangular to octagonal positioning recess 520 formed in a corresponding one of the opposite surfaces of the first hitting member 300A, the second hitting member 300B, and the third hitting member 300C such that the connection and coupling member 510 is coupled to the positioning recess 520 by insertion.
  • the polygonal connection and coupling member 510 and the polygonal positioning recess 520 are described as being formed so as to have a quadrangular shape, and the minimum number of connection and coupling members 510 is two. The reason for this is that other hitting members are connected and coupled to opposite surfaces of a middle hitting member.
  • the first hitting member 300A, the second hitting member 300B, and the third hitting member 300C may be made of the same material as a golf ball, or may be made of a metal material or a synthetic resin material.
  • each of the connection and coupling members 510 has a through hole, through which the coupling rod 400 extends.
  • variable golf putter according to the fifth embodiment configured as described above will be described.
  • connection and coupling member 510A is coupled to the positioning recess 520 of the first hitting member 300A by insertion
  • the other end of the connection and coupling member is coupled to the positioning recess 520 formed in one surface of the second hitting member 300B by insertion.
  • connection and coupling member 510B is coupled to the positioning recess 520 formed in the other surface of the second hitting member 300B by insertion, and the other end of the connection and coupling member is coupled to the positioning recess 520 formed in one surface of the third hitting member 300C by insertion.
  • the coupling rod 400 extends through the first hitting member 300A, the first connection and coupling member 510A, the second hitting member 300B, the second connection and coupling member 510B, and the third hitting member 300B. Thereafter, nuts are fastened to the positioning recess 520 formed in the other surface of the third hitting member 300C and to the portion of the coupling rod 400 exposed in the positioning recess 520 formed in the other surface of the first hitting member 300A to integrate the first, second, and third hitting members 300A, 300B, and 300C.
  • a right-handed user may perform putting practice using a putter having the putter head 200 including the first, second, and third hitting members 300A, 300B, and 300C.
  • the spherical hitting surface 320 or the planar hitting surface 340 of the middle hitting member is used as a hitting surface configured to hit a golf ball.
  • the user unfastens the nuts, by which the first, second, and third hitting members 300A, 300B, and 300C are integrated, from the coupling rod 40, separates the connection and coupling members 510A and 510B from the middle hitting member, i.e. the second hitting member 300B, rotates the second hitting member 300B such that the spherical hitting surface 320 is oriented in the hitting direction, and fastens the nuts to opposite ends of the coupling rod 40 as described above to integrate the first, second, and third hitting members 300A, 300B, and 300C again.
  • the user may perform hitting after changing the hitting direction, as shown in FIG. 24 . That is, since the spherical and planar hitting surfaces 320 and 340 are formed on a plurality of surfaces of each of the hitting members 300B and 300C, the left-handed user may hold a club, and may perform hitting in the state of changing the hitting direction.
  • the hitting surface may be selected by selecting the hitting members 300B and 300C. Consequently, it is possible to more efficiently perform putting practice using various hitting surfaces 320 and 340.
  • the hitting surfaces 320 and 340 are formed in opposite directions such that the hitting direction is not fixed to one side, whereby the left-handed user as well as the right-handed user may easily perform putting practice.
  • a hitting material 390 made of a material different from the materials of the hitting members 300B and 300C is provided in the spherical hitting surface 320 and the planar hitting surfaces 340, and therefore it is possible to provide various hitting sensations to the user at the time of hitting practice.
  • FIG. 25 is an exploded perspective view showing a variable golf putter according to a sixth embodiment of the present disclosure.
  • FIG. 26 is a perspective view showing a coupling state of the variable golf putter shown in FIG. 25 .
  • FIG. 27 is a sectional view taken along line A-A of FIG. 26 .
  • variable golf putter includes a putter head 20 having a shaft coupling hole 21, to which the lower end 12 of a shaft 10 is coupled, and a head hitting surface 24 and a hitting member selectively coupled to the putter head 20.
  • An incision portion 26 configured to open a portion of the upper surface 23 of the putter head 20 in the hitting direction is formed in the central region of the head hitting surface 24 corresponding to the through hole 22.
  • a coupling portion 23A is formed around the through hole 22.
  • the coupling portion 23A has a quadrangular section.
  • Shaft coupling holes 21 of the putter head 20 are formed in opposite sides of the putter head 20 such that a right-handed person or a left-handed person selects one of the shaft coupling holes and couples the shaft 10 to the selected shaft coupling hole.
  • the lower end 12 of the shaft 10 and the shaft coupling hole 21 may be formed in a polygonal shape or may be formed so as to be coupled to each other through spline coupling, whereby the coupling angle between the putter head 20 and the shaft 10 may be adjusted.
  • a hitting surface 34 may be formed at one or each of the outer surfaces of the hitting member 30. In this embodiment, however, a description will be given on the assumption that a hitting surface 34 is formed at one surface of the hitting member and an auxiliary hitting surface 34 is formed at the other surface of the hitting member.
  • a coupling recess H to which the coupling portion 23A is coupled by insertion, is formed in the bottom surface of the hitting member so as to be open downwards.
  • a screw fastening recess HI to which a fastening bolt 40 is fastened, is formed in the bottom surface of the coupling recess H.
  • a hitting sound generation recess 34-4 configured to generate a hitting sound when a golf ball is hit by the entirety of the hitting surface 34 or the region of the hitting surface 34 corresponding to a positive hitting point P is formed in the hitting member 30.
  • the hitting sound generation recess 34-4 may be formed in a region corresponding to the hitting surface 34 or the region of the hitting surface 34 corresponding to the positive hitting point P so as to be open toward the bottom, the side, or the top of the hitting member 30 or toward a coupling recess 35.
  • the hitting sound generation recess is open toward the bottom of the hitting member 30.
  • the reason that the hitting sound generation recess 34-4 is formed in the hitting member 30 as described above is that a bright hitting sound is generated when a golf ball is hit at the positive hitting point P and a dull hitting sound is generated when the golf ball is hit by the region of the hitting member deviating from the positive hitting point P, whereby it is possible to audibly determine and recognize whether correct hitting has been performed.
  • the hitting sound generation recess 34-4 may be filled with a hitting material made of a metal material or a synthetic resin material different from the material of the hitting member 30, the hitting material may be coupled to the hitting sound generation recess by insertion, or the hitting material may be integrally formed with the hitting member 30 through insert injection molding. Integration between the hitting material and the hitting member is performed in order to generate various hitting sounds.
  • the hitting sound generation recess 34-4 may not be formed in the hitting member 30. That is, the hitting sound generation recess 34-4 may be selectively formed as needed.
  • the hitting member 30 may be formed in the shape of a sphere, a hemisphere, a quadrangle, or a combination of a polygon, including a quadrangle, and a sphere.
  • the hitting member 30 and the putter head 20 configured as described above are coupled to each other through the following structure. That is, the fastening bolt 40 is fastened to the screw fastening recess H1 through the through hole 22 in the state in which the coupling portion 23A is inserted into and coupled to the coupling recess H such that the hitting surface 34 or the auxiliary hitting surface 34-6 protrudes through the incision portion 26 more than the head hitting surface 24 or coincides with the head hitting surface 24, whereby the hitting member 30 is replaceably coupled to the putter head 20.
  • a mark C configured to indicate the hitting direction is formed on the outer circumferential surface of the hitting member 30 in the form of a plurality of recesses or a line. The user may recognize the putting direction through the mark C at the time of putting. To this end, the marks C are formed in a line.
  • a decorative member J1 made of a jewel or a quasi-jewel is provided at the upper surface of the hitting member.
  • a portion of the decorative member J1 may be coupled to an insertion recess formed in the center of the upper surface of the hitting member 30 by insertion, or a male-screw fastening portion provided at the decorative member J1 may be coupled to a screw hole formed in the upper surface of the hitting member by fastening.
  • This structure is configured to easily replace or exchange the decorative member J1.
  • the decorative member J1 may be coupled to the recess-shaped mark C, or may be formed at a position other than the mark C.
  • the hitting member 30 is formed so as to have the shape of a sphere, a hemisphere, or a combination of a polygon and a sphere
  • the total size (diameter) of the hitting member is set
  • a hitting position P2 for hitting is formed at the outer circumference of the sphere
  • the distance L between the center P1 of the hitting member 30 and the hitting position P2 is preset
  • a hemispherical auxiliary member 34-6 is formed at the hitting surface 34 formed at the outer circumference thereof so as to protrude
  • an auxiliary hitting surface 34-5 is formed at the hemispherical auxiliary member 34-6 such that the area of the hitting surface is increased or decreased, as shown in FIGS. 25 to 27 .
  • the distance L between the center P1 of the hitting member 30 and the hitting position P2 is preset and the size of the hitting member 30 is preset, as shown in FIG. 27 , it is not possible to increase or decrease the area of the hitting surface 34 formed at the outer circumference of the sphere.
  • the hemispherical auxiliary member 34-6 is formed at the hitting surface 34 formed at the outer circumference of the sphere so as to protrude.
  • the auxiliary hitting surface 34-5 is formed at the outer circumference of the auxiliary member 34-6 corresponding to the hitting position P2 so as to be flat.
  • the size of the auxiliary member 34-6 is increased such that the auxiliary hitting surface 34-5 is formed at the top region (hitting position) of the auxiliary member 34-6 so as to have a large area.
  • the size of the auxiliary member 34-6 is decreased, and the auxiliary hitting surface 34-5 is formed at the top region (hitting position) of the auxiliary member 34-6 so as to have a small area.
  • a hitting member 30 configured such that the area of the auxiliary hitting surface 34-5 is large by increasing the area of the auxiliary hitting surface 34-5 or to obtain a hitting member 30 configured such that the area of the auxiliary hitting surface 34-5 is small by decreasing the area of the auxiliary hitting surface 34-5 without changing the distance L between the hitting position P2 for hitting and the center P1 of the hitting member 30.
  • the present disclosure is configured to selectively couple hitting members having various hitting areas to a putter head in order to perform hitting practice, and may provide various hitting sensations to a user. Consequently, the present disclosure is usefully applicable to the golf industry and thus has industrial applicability.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
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EP18876403.9A 2017-11-08 2018-11-08 Variable golf putter Withdrawn EP3708229A1 (en)

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KR1020170148137A KR102039548B1 (ko) 2017-11-08 2017-11-08 가변형 골프 퍼터
PCT/KR2018/013558 WO2019093792A1 (ko) 2017-11-08 2018-11-08 가변형 골프 퍼터

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US11618213B1 (en) 2020-04-17 2023-04-04 Cobra Golf Incorporated Systems and methods for additive manufacturing of a golf club
US11618079B1 (en) 2020-04-17 2023-04-04 Cobra Golf Incorporated Systems and methods for additive manufacturing of a golf club

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US20210178242A1 (en) 2021-06-17
WO2019093792A1 (ko) 2019-05-16
KR102039548B1 (ko) 2019-11-01
JP2021502145A (ja) 2021-01-28
KR20190052444A (ko) 2019-05-16
CN111655345A (zh) 2020-09-11

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