JP2008061794A - Putter head and putter club - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a putter head and a putter club allowing a user to precisely and easily change the shooting according to a distance. <P>SOLUTION: This putter head 100 is provided with ball shooting faces 101a, 102a and 103a having different restitution coefficients respectively on respective side faces of an oblate triangular prism; and the putter club 110 is provided with a shaft 111 vertically raised from the upper face center of the putter head. A player selects and shoots one ball shooting face out of the plurality of ball shooting faces with different restitution coefficients according to the distance to shoot the ball. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a putter club and a putter head used for hitting a golf ball mainly on a green in golf, and more particularly to a putter head and a putter club having a plurality of hitting surfaces each having a different coefficient of restitution. .

  Conventionally, when a golf ball is hit on a green using a putter club, the restitution coefficient is different for each hitting position on the hitting surface (putter face), that is, the restitution coefficient is lowered when the golf ball is separated from the sweet spot. Using this, the player selects an appropriate hitting spot on the hitting surface according to the distance to the hole cup, and hits the ball (putting).

  Further, as shown in Patent Document 1, the first hitting surface, the second hitting surface, and the second hitting surface having different hardnesses are included in the same hitting surface of the putter head so that the hitting according to the distance can be performed. The first hitting surface is used when hitting a ball at a relatively short distance, and the second hitting surface is used when hitting at a relatively medium distance. When hitting a ball at a relatively long distance, a third hitting surface is known.

Japanese Patent Laid-Open No. 2001-286487 (FIG. 1, FIG. 2, claims 2 and 4)

  However, the putter head described in Patent Document 1 has a problem that accurate hitting cannot always be performed because three hitting surfaces are provided in a flush hitting surface. That is, since the respective hitting surfaces are provided adjacent to each other, for example, the player may hit the ball with the second hitting surface although the ball hits the first hitting surface. In addition, the player may hit a ball at a place other than the hitting surface of the putter face.

  The present invention has been made under such a background, and an object of the present invention is to provide a putter head and a putter club that can be accurately and easily classified according to distance.

  The present invention adopts the following means in order to solve the above problems. The reference numerals used in the description of the best mode for carrying out the invention and the drawings to be described later are appended in parentheses for reference, but the constituent elements of the present invention are not limited to the appended description.

  First, in the invention according to claim 1, the ball striking surfaces (101a to 103a, 201a to 202a) are respectively formed on two or more side surfaces of the triangular prism or the rectangular parallelepiped, and the repulsion coefficients of the respective ball striking surfaces are different from each other. Is a putter head (100, 200).

  The invention according to claim 2 is the putter head (100) according to claim 1, wherein the ball hitting members (101 to 103) each having the ball hitting surfaces (101a to 103a), and the ball hitting balls. And a base material (104) to which the members are joined, wherein each hitting member is made of the same material and has different thicknesses (t1 to t3) in the depth direction from the respective hitting surfaces. It is a putter head.

  The invention according to claim 3 is characterized by comprising the putter head (100) according to claim 1 or 2 and a shaft (111) standing vertically from the center of the top surface of the putter head. It is a putter club (110).

  Further, the invention according to claim 4 is provided at the center of the top surface of the putter head (200) according to claim 1 or 2, and parallel to one of the hitting surfaces. A putter club (210) comprising: a holding member (206) that holds the shaft so as to be oblique to the vertical direction; and a shaft (211) held by the holding member. is there.

  First, according to the putter head according to the first aspect, the ball striking surfaces having different restitution coefficients are formed on two or more of the side surfaces of the triangular prism or the rectangular parallelepiped. Since the player only has to select one of the ball striking surfaces and hit the ball, it is possible to accurately and easily perform the hitting according to the distance.

  Further, according to the putter head according to claim 2, since the coefficient of restitution of each ball striking surface is made different by varying the thickness of the ball striking member bonded to the base, a plurality of ball striking members made of different materials are used. There is no need to prepare.

  According to the putter club of the third aspect, the shaft is provided vertically from the center of the upper surface of the putter head so that the putter head is looked down from directly above or the putting line is seen from directly behind the putter club. The ball can be struck with high accuracy, so that the ball can be struck with good directionality and the putter club is self-supporting on a substantially flat surface. You can check the grain and adjust the direction of hitting.

  Further, according to the putter club of the fourth aspect, the holding member provided at the center of the upper surface of the putter head is parallel to one of the plurality of ball striking surfaces and inclined in the vertical direction. Since the shaft is held at the top, it is possible to hit the ball with a posture not to bend down too much, and it is possible to easily cope with not only the right-handed player but also the left-handed player.

  Hereinafter, a putter head and a putter club according to the present invention will be described with reference to the drawings. The putter head and the putter club according to the present invention are characterized in that a ball striking surface is formed on each of two or more of the side surfaces of a triangular prism or a rectangular parallelepiped, and the rebound coefficient of each ball striking surface is different. . The putter head and the putter club include the first embodiment shown in FIGS. 1 and 2 and the second embodiment shown in FIGS. 3 and 4. Hereinafter, each embodiment will be described, and further modifications will be described.

[1. Putter head 100 and putter club 110 according to the first embodiment]
The putter head 100 according to the first embodiment has an equilateral triangle shape in plan view as shown in FIG. 1A, and the equilateral triangle shape in elevation view as shown in FIG. A flat regular triangular prism having a height shorter than the length of each side is exhibited, and three striking surfaces 101a, 102a, 103a are formed on each side surface (that is, three side surfaces) of the flat triangular prism. The putter head 100 includes a plurality of (three in this case) ball striking members 101, 102, 103 each having a ball striking surface 101a, 102a, 103a, and a base body 104 to which the ball striking members 101, 102, 103 are joined. It consists of.

  Here, as shown in FIG. 1A, the hitting member 101 has a shape in which mounting portions 101b and 101b project from the left and right sides of the lower end of the isosceles trapezoid in a plan view, and as shown in FIG. In addition, the mounting portions 101b and 101b project from the left and right sides of the upper end of the rectangle which is higher than the height of the putter head 100 by the thickness of the putter head 100 in an elevational view. It is. The front surface of the hitting member 101 is a smooth hitting surface 101 a that is flush with the side surface of the base 104 when the hitting member 101 is joined to the base 104.

  Similarly, as shown in FIG. 1A, the hitting ball member 102 has a shape in which mounting portions 102b and 102b protrude from the left and right sides of the isosceles trapezoidal shape in a plan view and is not shown in an elevational view. The mounting portions 102b, 102b project from the left and right sides of the upper end of the rectangle which is higher than the height of the putter head 100 by the thickness of the mounting portions 102b, 102b. The front surface of the hitting member 102 is a smooth hitting surface 102 a that is flush with the side surface of the base 104 when the hitting member 102 is joined to the base 104.

  Similarly, as shown in FIG. 1A, the hitting ball member 103 has a shape in which mounting portions 103b and 103b protrude from the left and right sides of the isosceles trapezoidal shape in a plan view. The mounting portions 103b and 103b project from the left and right sides of the upper end of the rectangle which is higher than the height of the putter head 100 by the thickness of the mounting portions 103b and 103b. The front surface of the hitting member 103 is a smooth hitting surface 103 a that is flush with the side surface of the base 104 when the hitting member 103 is joined to the base 104.

  Each of the ball striking members 101, 102, 103 is a solid member formed of the same material, for example, titanium or titanium alloy, stainless steel or stainless alloy, copper or copper alloy, etc. It is formed. Further, as shown in FIG. 1A, the hitting members 101, 102, 103 are formed so that the thicknesses t1, t2, t3 in the depth direction from the hitting faces 101a, 102a, 103a are different from each other. Here, the thickness t1 of the hitting member 101 from the hitting surface 101a> the thickness t2 of the hitting member 102 from the hitting surface 102a> the thickness t3 of the hitting member 103 from the hitting surface 103a is formed.

  As a result, of the three ball striking surfaces, the coefficient of restitution of the ball striking surface 101a becomes high, and when hitting a ball over a relatively long distance, it is suitable to use the ball striking surface 101a. The rebound coefficient of 102a is medium, and when hitting a ball at a relatively medium distance, it is suitable to use the hitting surface 102a, and the rebound coefficient of the hitting surface 103a is low. When hitting a ball toward a short distance, it is suitable to use the hitting surface 103a. Here, “long” is displayed on the upper surface of the hitting member 101 as a mark 101c indicating that it is suitable for hitting a relatively long distance. “Middle” is displayed as a mark 102c indicating that the ball is suitable for hitting the ball, and a mark 103c indicating that the ball is suitable for hitting a relatively short distance on the upper surface of the ball hitting member 103. "Short" is displayed.

  As shown in FIG. 1 (a), the base body 104 has three recesses in which each side of the equilateral triangle is formed in an isosceles trapezoidal shape in plan view so that the ball striking members 101, 102, 103 can be joined. It exhibits a shape having The base body 104 is made of a metal, plastic, ceramic, or the like so as to be solid or hollow. The ball striking members 101, 102, 103 are fitted into the three concave portions of the base body 104 so as to be in close contact with each other, and are provided on mounting portions 101b, 102b, 103b protruding from the ball striking members 101, 102, 103. When the screw 105 is inserted into the screw hole and the screw 105 is screwed into the screw hole provided on the upper surface of the base 104, each of the ball striking members 101, 102, 103 and the base 104 are joined to each other. A head 100 is formed.

  In the putter head 100, the repulsion coefficients of the ball striking surfaces 101a, 102a, 103a are made different by making the thicknesses t1, t2, t3 of the ball striking members 101, 102, 103 joined to the base 104 different. Therefore, it is not necessary to prepare a plurality of different ball hitting members.

  As shown in FIG. 1B, the putter club 110 according to the first embodiment includes the above-described putter head 100 and a shaft 111 erected vertically from the center of the top surface of the putter head 100. is there. Here, the center of the putter head 100 means the center of the figure shape of the equilateral triangle which is the planar shape of the putter head 100. The shaft 111 has a circular cross section, and is a known one that is formed in a solid or hollow shape by metal, plastic, glass fiber, or the like.

  When hitting a ball using the putter club 110, the player hits one of the ball striking surfaces 101a, 102a, 103a having different restitution coefficients according to the distance to be hit (for example, the ball hitting). The surface 101a) may be selected and hit.

  Specifically, first, the player makes the putter club 110 stand up so that the selected hitting surface 101a is located behind the golf ball, confirms the patch line from directly behind the putter club 110, and hits the ball. Adjust. The putter club 110 is provided with a shaft 111 that stands vertically from the center of the upper surface of the putter head 100, so that the putter club 110 stands on substantially flat ground. The direction of hitting can be adjusted by checking the patch line.

  Next, as shown in FIG. 2A, the player who has confirmed the putting line grasps the vicinity of the upper end of the shaft 111 with the left hand in the case of a right strike while looking down on the putter head 100 from directly above. At the same time, the lower part of the shaft 111 than the left hand is gripped by the right hand. Then, the player uses the left hand as a fulcrum, pulls the right hand backward (ie, the player's right side), and pushes the right hand forward (ie, the player's left side), thereby hitting the golf ball with the hitting surface 101a. According to this attitude, it is possible to hit the ball with the putter head 100 looking down from directly above. Therefore, it is possible to hit the ball with good directivity and accuracy.

  Alternatively, as shown in FIG. 2 (b), the player who has confirmed the putting line holds the vicinity of the upper end of the shaft 111 with the left hand in the case of right-handed squatting in the state of squatting behind the putter club 110, The lower part of the shaft 111 below the left hand is held with the right hand. The player then hits the golf ball with the ball striking face 101a by pulling the right hand backward with the left hand as a fulcrum and pushing the right hand forward. According to this posture, it is possible to hit the ball in the form of looking at the patch line from directly behind the putter club 110, so that it is possible to hit the ball with good directionality and accuracy.

[2. Putter head 200 and putter club 210 according to the second embodiment]
As shown in FIG. 3A, the putter head 200 according to the second embodiment has a rectangular shape having a long side and a short side in a plan view, and as shown in FIG. A rectangular parallelepiped having a height shorter than the length of each side of the rectangle as viewed, and two striking surfaces 201a and 202a are formed on the two side surfaces (that is, the front and the back) of the long side of the flat rectangular parallelepiped. It is. The putter head 200 includes a plurality of (two in this case) ball striking members 201 and 202 each having a ball striking surface 201a and 202a, and a base body 204 to which the ball striking members 201 and 202 are joined.

  Here, the hitting member 201 has a shape in which mounting portions 201b and 201b protrude from the left and right sides of the rectangle in a plan view as shown in FIG. 3A, and as shown in FIG. In the plan view, the mounting portions 201b and 201b are projected from the left and right sides of the upper end of the rectangle whose height is higher than the height of the putter head 200 by the thickness of the mounting portions 201b and 201b. The front surface of the hitting member 201 is a smooth hitting surface 201 a that is flush with the side surface of the base 204 when the hitting member 201 is joined to the base 204.

  Similarly, as shown in FIG. 3A, the hitting ball member 202 has a shape in which mounting portions 202b and 202b protrude from the left and right sides of the rectangle in plan view, and although not shown, the putter head 200 in elevation view. The mounting portions 202b and 202b have a reverse convex shape in which the mounting portions 202b and 202b protrude from the left and right sides of the upper end of the rectangle which is higher than the height of the mounting portions 202b and 202b. The front surface of the hitting member 202 is a smooth hitting surface 202 a that is flush with the side surface of the base 204 when the hitting member 202 is joined to the base 204.

  Each of the ball hitting members 201 and 202 is a solid member formed of different materials, for example, cast or forged by two different materials of titanium or titanium alloy, stainless steel or stainless alloy, copper or copper alloy. Etc., respectively. Further, as shown in FIG. 3A, the hitting members 201 and 202 are formed such that the thicknesses t1 and t2 in the depth direction from the hitting surfaces 201a and 202a are the same.

  Here, when the hitting member 201 is formed of a titanium alloy and the hitting member 202 is formed of a copper alloy, the repulsion coefficient of the hitting surface 201a out of the two hitting surfaces becomes high, and the ball is hit toward a relatively long distance. In this case, it is suitable to use the hitting surface 201a, and when the hitting surface 202a hits a relatively short distance, the hitting surface 202a is used. Become suitable. Here, “long” is displayed on the upper surface of the hitting member 201 as a mark 201c indicating that it is suitable for hitting a relatively long distance, and a relatively short distance is displayed on the upper surface of the hitting member 202. "Short" is displayed as a mark 202c indicating that the ball is suitable for hitting the ball.

  As shown in FIG. 3 (a), the base 204 is an H-type having two concave portions in which the long sides of the rectangle are cut out in a rectangular shape in plan view so that the ball striking members 201 and 202 can be joined. It has a shape. The base 204 is made of a metal, plastic, ceramic, or the like so as to be solid or hollow. The ball hitting members 201 and 202 are fitted into the two recesses of the base 204 so as to be in close contact with each other, and screws 205 are inserted into screw holes provided in mounting portions 201b and 202b protruding from the ball hitting members 201 and 202. Is inserted and the screw 205 is screwed into a screw hole provided on the upper surface of the base body 204, whereby the ball hitting members 201, 202 and the base body 204 are joined to form the putter head 200.

  In this putter head 200, the repulsion coefficients of the ball striking surfaces 201a and 202a are made different by making the materials of the ball striking members 201 and 202 joined to the base body 204 different from each other. The shape of the hitting ball members 201 and 202 is simple and easy to manufacture.

  As shown in FIGS. 3B and 3C, the putter club 210 according to the second embodiment includes the putter head 200 described above, the holding member 206 provided at the center of the upper surface of the putter head 200, and the holding member 206. And a shaft 211 held by the motor. Here, the center of the putter head 200 means the center of the rectangular figure shape which is the planar shape of the putter head 200. The shaft 211 has a circular shape in cross section, and is a known one that is formed solid or hollow by metal, plastic, glass fiber, or the like. However, as shown in FIG. 3C, the lower end of the shaft 211 is formed in a reverse convex shape in a side view, and a through hole is provided in the reverse convex protrusion in a front view.

  As shown in FIG. 3C, the holding member 206 has a concave shape in a side view, a base 206a in which through holes are provided in both protrusions of the concave shape in a front view, and a through hole in the base 206a. It consists of a butterfly screw 206b to be inserted and a nut 206c to be screwed onto the tip of the butterfly screw 206b inserted into the through hole of the base 206a.

  Then, an inverted convex protrusion formed at the lower end of the shaft 211 is fitted into the recess of the base 206a, and a butterfly screw is inserted into the through hole in front of the base 206a, the through hole in the shaft 211, and the through hole in the back of the base 206a. 206b is inserted and the nut 211c is screwed and tightened to the tip of the thumbscrew 206b in a state where the shaft 211 is inclined with respect to the vertical direction. The shaft 211 is held by the holding member 206 so that the putter club 210 is formed so as to be parallel to one hitting surface and oblique to the vertical.

  When hitting a ball using the putter club 210, the player selects and holds one hitting surface among the hitting surfaces 201a and 202a having different restitution coefficients according to the distance to be hit. By changing the holding direction of the shaft 211 by the member 206, the putter club 210 capable of hitting with the selected hitting surface is formed.

  Specifically, when the player hits the right side and hits the hitting surface 201a, the shaft 211 is moved to the right side toward the hitting surface 201a as shown by a two-dot chain line in FIG. When the nut 206c is tightened in the inclined state, the putter club 210 is capable of hitting with the hitting surface 201a. Then, as shown in FIG. 4, the player holds the putter club 210 with both hands, bends slightly and holds the putter club 210 so that the ball striking face 201 a is behind the golf ball. By pulling 210 backward and swinging forward, the golf ball is hit with the hitting surface 201a.

  On the other hand, when the player hits the right side and hits the hitting surface 202a, the shaft 211 is inclined leftward toward the hitting surface 201a as shown by the solid line in FIG. That is, the putter club 210 that can be hit with the hitting surface 202a is obtained by tightening the nut 206c in a state of being inclined to the right side toward the hitting surface 202a. Although not shown, the player holds the putter club 210 with both hands and bends slightly to hold the putter club 210 so that the hitting surface 202a is behind the golf ball. The golf ball is hit with the hitting surface 202a by swinging forward after being pulled.

  According to the posture shown in FIG. 4, it is possible to hit a ball with a posture that is usually performed well and does not bend down too much. Further, by reversing the direction of the shaft 211, it is possible to easily cope with not only a right-handed player but also a left-handed player.

  As described above, according to the putter heads 100 and 200 and the putter clubs 110 and 210 according to the present invention, the striking surfaces having different restitution coefficients are respectively provided on two or more of the side surfaces of the triangular prism or the rectangular parallelepiped. By being formed, according to the distance at which the ball should be hit, the player only has to select one of the ball hitting faces and hit the ball, so that the hitting according to the distance is accurate and There is a remarkable effect that it can be easily performed.

  Also, in golf courses, the condition of the green is different depending on the day, such as the speed (speed) of rolling of the golf ball on the green is quite fast, slightly fast, normal, slightly slow, quite slow, etc. It is possible to hit a ball by selecting a ball hitting ball that matches the condition. The green has many inclinations such as flat, up, down, etc. According to the present invention, it is possible to hit a ball by selecting a hitting surface that matches the inclination of the green. Furthermore, although the player's physical condition on the day is also various, the player can hit a ball by selecting a hitting surface that matches the physical condition. That is, according to the present invention, not only the ball hitting surface is selected according to the distance to be hit, but also the ball hitting ball can be hit by selecting a ball hitting surface that can be used to match the green or the player's favorite touch. it can. Further, according to the present invention, it is possible to test the hit ball on the selected hitting surface with the practice green.

  Here, the superiority of the present invention compared with the putter head described in Patent Document 1 will be clarified. First, the putter head described in Patent Document 1 has a problem of hitting a ball with an unintended hitting surface because a plurality of hitting surfaces are provided in a flush hitting surface. On the other hand, in the present invention, since a plurality of hitting surfaces that are not flush with each other are provided, there is no possibility of hitting with an unintended hitting surface.

  Further, in the putter head described in Patent Document 1, since a plurality of hitting surfaces are provided in a flush hitting surface, three hitting surfaces can be used regardless of the position of the putter head. When hitting with two of the hitting surfaces, there is a problem that a moment is affected by the shaft, so that the hitting cannot be made accurately. Specifically, as shown in FIG. 1 of Patent Document 1, when the shaft is fixed in the vicinity of the heel portion of the putter head, the impact of the moment is small when a ball is hit with the hitting surface of the heel portion. When hitting with the hitting surface of the toe part and the hitting surface of the center part, the influence of the moment is large. Even if the shaft is fixed to the central part of the putter head, the impact of the moment is small when hitting with the hitting surface of the central part, but the hitting ball with the hitting surface of the toe part and the hitting surface of the heel part. When doing so, the influence of the moment is great. When the influence of the moment is large in this way, the grip holding the shaft is loosened, and it is not possible to hit the ball accurately. On the other hand, in the present invention, the shafts 111 and 211 are fixed to the center of the upper surface of the putter heads 100 and 200 having a plurality of hitting surfaces that are not flush with each other. There is almost no influence, and you can hit the ball accurately.

[3. Modified example]
Finally, a modification of the present invention will be described.

  In the first embodiment, as shown in FIG. 1A, the example in which the planar shape of the putter head 100 is a regular triangle has been described. However, the present invention is not limited to this, and the planar shape of the putter head 100 is a regular triangle. A triangle other than a triangle (for example, an isosceles triangle) may be used. Further, instead of using all three side surfaces of the triangular prism as a hitting surface, only two side surfaces may be used as a hitting surface. Further, the coefficient of restitution may be made different depending on the material of the ball striking member as in the second embodiment, instead of making the coefficient of restitution different depending on the thickness of the ball striking member. Further, the shaft 111 is not fixed to the putter head 100 but is held rotatably in a horizontal plane by a holding member provided at the center of the upper surface of the putter head 100, and one of the hitting faces of each hitting face. May be held in parallel with each other and in an oblique direction with respect to the vertical.

  In the second embodiment, as shown in FIG. 3A, the example in which the planar shape of the putter head 200 is a rectangle has been described. However, the present invention is not limited thereto, and the planar shape of the putter head 200 is a square. There may be. Moreover, it is good also considering not only two side surfaces of a rectangular parallelepiped as a hitting surface but three side surfaces, or four side surfaces as a hitting surface. Further, the coefficient of restitution may be made different depending on the thickness of the ball striking member as in the first embodiment, instead of making the coefficient of restitution different depending on the material of the ball striking member. Furthermore, the shaft 211 may not be held by the holding member 206 but may be erected vertically from the center of the upper surface of the putter head 200.

  In the above embodiment, an example in which the hitting member and the base are joined by screws in the putter heads 100 and 200 is not limited to this, but the hitting member and the base may be bonded, welded, or the like. It may be joined by a method. Further, the hitting member and the base may be integrated instead of separate.

  In the above embodiment, the example in which the hitting member is fitted into the concave portion formed in the bases 104 and 204 and joined is described. However, the present invention is not limited to this. The ball striking member having a different thickness in the first embodiment and the ball striking member having the same thickness in the second embodiment may be attached and joined. According to this, since it is not necessary to form a recess in the bases 104 and 204, the structure of the bases 104 and 204 is simple and easy to manufacture.

  In the above embodiment, as shown in FIG. 1A, the marks 101c to 103c are provided on the hitting members 101 to 103, and as shown in FIG. 2A, the marks 201c to 202c are set to the hitting members 201 to 202. However, the present invention is not limited to this, and these marks may be provided on the bases 104 and 204.

  In the second embodiment, the holding member 206 includes the base 206a, the butterfly screw 206b, and the nut 206c, and the shaft 211 is held by tightening the butterfly screw 206b and the nut 206c. However, the present invention is not limited to this. For example, the shaft 211 may be held by another method such as a one-way ratchet.

FIG. 1 is a diagram illustrating an example of the first embodiment, in which (a) is a plan view of a putter head and (b) is a front view of a putter club. FIG. 2 is a diagram illustrating an example of a state of hitting using the putter club according to the first embodiment. FIG. 3 is a diagram illustrating an example of the second embodiment, in which (a) is a plan view of a putter head, (b) is a front view of the putter club, and (c) is a side view of the putter club. FIG. 4 is a diagram illustrating an example of a state of hitting a ball using the putter club according to the second embodiment.

Explanation of symbols

[First Embodiment]
DESCRIPTION OF SYMBOLS 100 ... Putter head 101-103 ... Hitting ball | bowl member 101a-103a ... Hitting surface 101b-103b ... Mounting part 101c-103c ... Mark 104 ... Base | substrate 105 ... Screw 110 ... Putter club 111 ... Shaft [2nd Embodiment]
200 ... Putter head 201-202 ... Hitting ball member 201a-202a ... Hitting surface 201b-202b ... Mounting portion 201c-202c ... Mark 204 ... Base 205 ... Screw 206 ... Holding member 206a ... Base screw 206c ... But screw 206c ... Nut 210 ... Putter Club 211 ... Shaft

Claims (4)

  A putter head, wherein a ball striking surface is formed on each of two or more side surfaces of a triangular prism or a rectangular parallelepiped, and each ball striking surface has a different restitution coefficient. The putter head according to claim 1,
A plurality of ball striking members each having the ball striking surface;
And a base to which each hitting member is joined,
Each of the hitting ball members is made of the same material and has a different thickness in the depth direction from each of the hitting surfaces. The putter head according to claim 1 or 2,
A shaft erected vertically from the center of the upper surface of the putter head;
A putter club characterized by comprising. The putter head according to claim 1 or 2,
A holding member that is provided in the center of the upper surface of the putter head, is parallel to one of the ball striking surfaces, and holds the shaft so as to be oblique to the vertical;
A shaft held by the holding member;
A putter club characterized by comprising.

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