Golf putter head

Abstract

The purpose of the present disclosure is to provide a golf putter head that can easily and accurately control a golf ball. A golf putter head (10) of one embodiment of the present disclosure comprises a club face portion (1), wherein the club face portion (1) has a club face (1a), and the golf putter head (10) comprises: a first identification mark (M1) capable of identifying a central portion (C) in a toe-heel direction of the club face (1a); a second identification mark (M2) capable of identifying a direction perpendicular to the club face (1a) when viewed from above; a club mounting portion (3) is provided in the club face portion (1) at a position closer to the heel side than the central portion (C), and the second identification mark (M2) is a protrusion (11) extending rearward from the club face portion (1) at a position closer to the heel side than the first identification mark (M1).

Description

Technical Field

[0001] The present invention relates to a golf putter head. Background Art

[0002] At present, various types of golf putter heads are proposed in consideration of the preferences of players. For example, there are sheet-shaped, hammer-shaped, L-shaped, T-shaped, etc. as golf putter heads.

[0003] A golf putter head is required to accurately control a golf ball relative to a target. Patent Document 1 describes that a body parallel line, which is an index indicating the center of the toe-heel direction of the head body, is displayed linearly along the front-rear direction on the upper surface of the sole of the head.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2015-146931 Utility Model Content

[0007] Technical problems to be solved by the utility model

[0008] The golf putter head described in Patent Document 1 aligns a golf ball with the center position of the toe-heel direction of the head body by a linear mark extending in the front-rear direction on the upper surface of the head bottom. In Patent Document 1, the mark also serves to align the club face in a direction perpendicular to the target line.

[0009] However, if one mark has both the function of aligning the position of the golf ball and the function of aligning the direction of the target line, the player's awareness will be dispersed when addressing or hitting the ball. As a result, it is difficult to accurately control the golf ball.

[0010] The present disclosure has been made based on such circumstances, and an object of the present disclosure is to provide a golf putter head that allows easy and accurate control of a golf ball.

[0011] Technical solutions for solving technical problems

[0012] (1) A golf putter head according to one embodiment of the present disclosure includes a club face portion, wherein the club face portion has a club face, and is characterized in that it has: a first identification mark capable of identifying a central portion of the club face in a toe-heel direction; a second identification mark capable of identifying a direction perpendicular to the club face when viewed from above, wherein a club mounting portion is provided in the club face portion at a position closer to the heel side than the central portion, and the second identification mark is a protrusion extending rearward from the club face portion at a position closer to the heel side than the first identification mark.

[0013] (2) In the above (1), the club may include a sole extending rearward from the face portion, and the first identification mark may be provided on the sole.

[0014] (3) In the above (2), the first identification mark may be an opening penetrating the sole, and the opening may be provided in a semicircular shape from the rear surface of the face portion in a plan view.

[0015] (4) In any one of the above (1) to (3), the protrusion may have a ridgeline extending perpendicularly to the club face in a plan view.

[0016] (5) In the above (4), the length of the ridgeline may be greater than 1.5 cm.

[0017] (6) In the above (4) or (5), the protruding portion may have the ridge lines on both sides in the toe-heel direction.

[0018] (7) In the above (6), the protruding portion may be in the shape of a rectangular parallelepiped with the front-to-back direction as the longitudinal direction.

[0019] (8) In any one of the above (1) to (7), the protrusion may protrude from an end portion on the heel side of the face portion.

[0020] (9) In any one of the above (1) to (8), the upper surface of the face portion and the upper surface of the protruding portion may be in the same plane.

[0021] (10) In any one of the above (1) to (9), the side surface of the protrusion may have a recessed portion.

[0022] (11) In any one of the above (1) to (10), at least a portion of the lever mounting portion may be located on an extension line of the protruding portion in a plan view.

[0023] (12) In the above (2) or (3), the sole may include a weight at a position closer to the toe side than the first identification mark.

[0024] It should be noted that, in the present disclosure, "front" refers to the side where the golf ball is hit, and "back" refers to the opposite side. "Toe-heel direction" refers to the horizontal direction orthogonal to the front-back direction in a state where the golf putter head is arranged on a horizontal plane in a manner that becomes a prescribed bottom angle and loft angle (the inherent bottom angle and loft angle specified in the golf putter head). "Top view" refers to a top view in a state where the golf putter head is arranged on a horizontal plane in a manner that becomes a prescribed bottom angle and loft angle. "Semicircular" refers to the shape of one side where a circle is cut into two parts by an arbitrary straight line, and is not limited to the shape where a circle is divided into two parts by a cutting line passing through the center of the circle. In addition, "circle" is not limited to a perfect circle, and includes an ellipse, an oblong, etc. "Cuboid" is not limited to a strict cuboid, and includes a shape with rounded corners, a shape with concave portions, convex portions, etc. on the surface. "Identification mark" includes a pattern and shape that functions as an identification display, and is not limited to a planar shape, for example, it can also be a three-dimensional shape.

[0025] Utility Model Effect

[0026] The golf putter head of one embodiment of the present disclosure can align the golf ball with the central part of the toe-heel direction of the club face through the first identification mark. And, the golf putter head can align the direction in a manner that the club face is perpendicular to the target line through the second identification mark. That is, the golf putter head has different identification marks to bear the position alignment function of the golf ball and the direction alignment function relative to the target line. Therefore, according to the golf putter head, the player can reliably align the position of the golf ball and the direction alignment relative to the target line. In addition, for the golf putter head, since the second identification mark and the rod mounting part are both located at the heel side of the central part of the toe-heel direction of the club face, it is possible to suppress the inertia moment around the rod from becoming too large, and it is possible to achieve easy control of the club face. By having these structures, it is easy to accurately control the golf ball using the golf putter head. It should be noted that the "target line" refers to an imaginary straight line passing through the target and the golf ball. The target can be, for example, a hole cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic front view of a golf putter head according to an embodiment of the present disclosure.

[0028] Figure 2 yes Figure 1 A schematic top view of a golf putter head.

[0029] Figure 3 yes Figure 1 A schematic bottom view of a golf putter head.

[0030] Figure 4 yes Figure 1 A schematic rear view of a golf putter head.

[0031] Figure 5 yes Figure 1 A schematic right side view of a golf putter head.

[0032] Figure 6 yes Figure 1 A schematic left side view of a golf putter head.

[0033] Figure 7 yes Figure 1 A schematic perspective view of a golf putter head.

[0034] Description of Reference Numerals

[0035] 1: face portion; 1a: face portion; 1b: flat surface; 2: bottom portion of the head; 3: shaft mounting portion; 10: golf putter head (putter head); 11: protrusion; 11a: upper surface; 11b: recess; 12: weight; 13: opening; 21a: first ridge; 21b: second ridge; 30: shaft; C: central portion; L1: maximum length of the opening in the toe-heel direction; L2: length of the first ridge; L3: length of the protrusion in the toe-heel direction; L4: length of the face portion in the front-back direction; M1: first identification mark; M2: second identification mark; M3: auxiliary identification mark. DETAILED DESCRIPTION

[0036] Hereinafter, the embodiments of the present disclosure will be described with appropriate reference to the accompanying drawings. It should be noted that, for the numerical values ​​recorded in this specification, only one of the upper limit value and the lower limit value recorded may be adopted, or the upper limit value and the lower limit value may be arbitrarily combined. In this specification, all the numerical ranges that can be combined are recorded as appropriate ranges. In addition, each figure is schematic and there are cases where it is inconsistent with the actual size, ratio, etc.

[0037] <Golf putter head>

[0038] Figures 1 to 7 The golf putter head 10 shown (hereinafter, also simply referred to as "putter head 10") includes a face portion 1 having a face 1a. In addition, the putter head 10 includes a head sole 2 extending rearward from the face portion 1. The putter head 10 includes: a first identification mark M1 that can identify the center portion C in the toe-heel direction of the face 1a; and a second identification mark M2 that can identify a direction perpendicular to the face 1a when viewed from above. In the face portion 1, a shaft mounting portion 3 is provided at a position closer to the heel side than the center portion C. The second identification mark M2 is a protrusion 11 extending rearward from the face portion 1 at a position closer to the heel side than the first identification mark M1.

[0039] The putter head 10 can align the golf ball (not shown) with the center C of the toe-heel direction of the club face 1a through the first identification mark M1 (hereinafter, this function is also referred to as the "golf ball position alignment function"). In addition, the putter head 10 can align the club face 1a perpendicularly to the target line through the second identification mark M2 (hereinafter, this function is also referred to as the "direction alignment function relative to the target line"). That is, the putter head 10 performs the golf ball position alignment function and the direction alignment function relative to the target line through different identification marks. In other words, the putter head 10 is configured so that the first identification mark M1 and the second identification mark M2 perform a single function that is different from each other in the golf ball position alignment function and the direction alignment function relative to the target line. Therefore, according to the putter head 10, the player can reliably align the golf ball and the direction alignment relative to the target line. In addition, the second identification mark M2 and the shaft mounting portion 3 of the putter head 10 are both located closer to the heel side than the center portion C of the club face 1a in the toe-heel direction, so that the inertia moment around the shaft can be suppressed from becoming too large, and the control of the club face portion 1 can be facilitated. With such a structure, according to the putter head 10, it is easy to accurately control the golf ball.

[0040] The putter head 10 is, for example, a hammer type. That is, the putter head 10 is designed so that, in a hammer type putter head, the correct position and direction can be easily identified when aiming at the ball and hitting the ball. The putter head 10 is, for example, made of metal or alloy as a main component. As the above-mentioned main component, for example, stainless steel can be cited. It should be noted that the "hammer type" includes a neo mallet type.

[0041] (Club Face)

[0042] The face portion 1 is, for example, a rectangular parallelepiped that is long in the toe-heel direction. The face portion 1 has a face 1a on its front surface. And, the face portion 1 has a flat surface 1b on its upper surface. The flat surface 1b extends over the entire toe-heel direction of the face portion 1. An auxiliary identification mark M3 can be provided on the face portion 1, and the auxiliary identification mark M3 can identify the central portion C of the toe-heel direction of the face 1a. The auxiliary identification mark M3 can be, for example, a circular mark formed on the upper surface of the face portion 1. In the case where the auxiliary identification mark M3 is a circular mark, the circular mark does not have a function of aligning the direction relative to the target line. Therefore, the auxiliary identification mark M3 only has a single function, which makes it easy to align the position of the golf ball more accurately. It should be noted that the "central portion" refers to the best position as the hitting position of the golf ball, and may also be inconsistent with the center in the physical sense depending on the specifications of the club head.

[0043] (Bottom of club head)

[0044] The club head bottom 2 extends rearward from the rear end of the club face 1. Figure 3 As shown, the lower surface of the sole 2 and the lower surface of the face portion 1 may be in the same plane. The sole 2 is a plate-like shape having a thickness smaller than that of the face portion 1. The thickness of the sole 2 may be less than 1 / 2 of the thickness of the face portion 1.

[0045] like Figure 2 As shown, the club head bottom 2 is rectangular in a plan view, and more specifically, is a rectangular shape that is longer in the toe-heel direction relative to the front-back direction when viewed from above. The side edge of the heel side of the club head bottom 2 is connected to the second identification mark M2. On the other hand, the side edge of the toe side of the club head bottom 2 is not connected to the identification mark. It should be noted that the "rectangular shape" is not limited to a complete rectangle, and includes, for example, a shape with rounded corners and a shape with an opening partially provided.

[0046] like Figure 2 , Figure 3 as well as Figure 7 As shown in FIG. 1 , a first identification mark M1 is provided on the club head bottom 2. Figure 3 As shown, the sole 2 has a weight 12 at a position closer to the toe side than the first identification mark M1.

[0047] [First identification mark]

[0048] The first identification mark M1 is provided at the sole 2 of the club head, so as to be arranged at a position away from the club face 1a in the front-back direction. In addition, the first identification mark M1 is provided at the sole 2 of the club head, so as to be easily arranged at a position lower than the center of the golf ball in the vertical direction. By providing in this way, the putter head 10 makes it easy for the player to focus on the golf ball when hitting the ball.

[0049] The first identification mark M1 is an opening 13 that passes through the bottom 2 of the club head. By configuring in this way, the first identification mark M1, in addition to its function as an identification mark, also contributes to the weight reduction of the putter head 10. That is, the overall weight of the putter head 10 tends to increase by setting the second identification mark M2 as the protrusion 11. In view of this, the putter head 10 can partially offset the weight increase caused by the second identification mark M2 by setting the first identification mark M1 as the opening 13.

[0050] The opening 13 penetrates the sole 2 in the thickness direction. The opening 13 is provided from the rear surface of the face portion 1. More specifically, the opening 13 is provided in a semicircular shape from the rear surface of the face portion 1 when viewed from above. By providing it in this way, the opening 13 can easily selectively play only the position alignment function of the golf ball. And, according to this structure, it is easy to hit the ball with the impression of digging up the golf ball. As a result, it is easy to give a forward spin to the golf ball, and it is easy to make the distance feeling of the putter consistent.

[0051] The shape of the opening 13 when viewed from above can be a shape having an area less than 1 / 2 times that of a circle (circle before truncation). For example, the shape of the opening 13 when viewed from above can be a shape formed by dividing a circle into two parts by a cutting line passing through the center thereof, or a shape formed by truncating a circle by a cutting line that does not include the center of the circle. By configuring in this way, the width of the opening 13 in the toe-heel direction gradually decreases from the front to the rear. As a result, it is easier to hit the ball with the impression of wedge-shaped golf balls.

[0052] The shape of the opening 13 when viewed from above may be a shape obtained by cutting a circle (ellipse, long circle, etc.) whose length direction is the front-back direction. However, from the viewpoint of not making the player aware of the function of aligning the direction with respect to the target line, the shape of the opening 13 when viewed from above is preferably a shape obtained by cutting a perfect circle or a circle (ellipse, long circle, etc.) whose length direction is the toe-heel direction.

[0053] Preferably, in a plan view, the central axis of the opening 13 extending in the front-rear direction passes through the central portion C. With such a configuration, the opening 13 can easily perform a function of aligning the position of the golf ball.

[0054] As the maximum length L1 of the opening 13 in the toe-heel direction (refer to Figure 2 ), from the viewpoint of making it easy to hit the ball with the impression of scooping the golf ball, preferably 3.0 cm, more preferably 3.5 cm, and even more preferably 3.8 cm. On the other hand, from the viewpoint of making it easy to align the golf ball with the center portion C, the upper limit of the maximum length L1 is preferably 5.5 cm, more preferably 5.0 cm, and even more preferably 4.8 cm.

[0055] 〔Counterweight〕

[0056] The weight 12 is disposed at a position closer to the toe side than the first identification mark M1 , thereby increasing the lateral inertia moment of the putter head 10 and adjusting the center of gravity of the putter head 10 .

[0057] The weight 12 may be disposed, for example, at the rear end of the sole 2 and at the toe side. The weight 12 may be adjusted so that the center of gravity of the putter head 10 is located on an imaginary line passing through the center C and extending in the front-rear direction.

[0058] (Pole mounting part)

[0059] A shaft 30 is mounted on the shaft mounting portion 3. The golf putter in which the shaft 30 is mounted on the shaft mounting portion 3 is one embodiment of the present disclosure. The shaft mounting portion 3 is provided on the upper surface of the face portion 1, more specifically, on the flat surface 1b of the face portion 1.

[0060] The club mounting portion 3 is arranged at a position closer to the heel side than the center portion C, so that the player can easily recognize the L body composed of the club face portion 1 and the protruding portion 11. As a result, it is easy to align the club face 1a perpendicularly to the target line. Figure 2 As shown, at least a portion of the rod mounting portion 3 may be located on an extension line of the protruding portion 11 in a plan view.

[0061] (Protrusion)

[0062] As described above, the protrusion 11 is configured as a second identification mark M2 for identifying a direction perpendicular to the club face 1a when viewed from above. The putter head 10 has only one protrusion 11 as the second identification mark M2. The protrusion 11 defines the outer edge of the heel side of the putter head 10 on the side of the club head bottom 2. The protrusion 11 is arranged together with the club face 1 in a manner that surrounds the front edge and the side edge of the heel side of the club head bottom 2 in an L-shape. The overall contour of the putter head 10 is determined by the club face 1, the club head bottom 2, the rod mounting portion 3 and the protrusion 11.

[0063] The protrusion 11 extends perpendicularly from the rear end of the face portion 1 relative to the face 1a when viewed from above. The protrusion 11 has a ridge extending perpendicularly relative to the face 1a when viewed from above. More specifically, the protrusion 11 has ridges on both sides of the toe-heel direction. To explain in more detail, the protrusion 11 has an upper surface 11a parallel to the flat surface 1b of the face portion 1, and a first ridge 21a is formed on the side edge of the toe side of the upper surface 11a, and a second ridge 21b is formed on the side edge of the heel side (it should be noted that, hereinafter, the first ridge 21a and the second ridge 21b are also collectively referred to as "ridges 21a, 21b").

[0064] The putter head 10 has the ridges 21a and 21b on the protruding portion 11, so that the club face 1a can be easily aligned perpendicularly to the target line. In particular, since the putter head 10 has the second ridge 21b formed on the heel side edge of the protruding portion 11, it is easy to control the direction of the player's body when addressing the ball to be parallel to the target line.

[0065] In addition, the protrusion 11 has ridges 21a and 21b on both sides of the toe-heel direction. According to this structure, it is possible to suppress the provision of unnecessary information to the player in terms of aligning the direction with respect to the target line. As a result, the protrusion 11 can easily selectively perform only the aligning function with respect to the target line.

[0066] As the length of the ridge lines 21a and 21b (in Figure 2In the figure, the lower limit of the length L2 of the first ridgeline 21a is preferably 1.5 cm, more preferably 2.0 cm, from the viewpoint of being able to easily exert the function of aligning the direction relative to the target line. On the other hand, as the upper limit of the length of the ridgelines 21a and 21b, from the viewpoint of suppressing the weight increase of the putter head 10, for example, it can be set to be less than the full length in the toe-heel direction of the club face 1. It should be noted that, it is also possible that the length of only one of the two ridgelines 21a and 21b of the putter head 10 is within the above range. However, it is more preferred that the lengths of the two ridgelines 21a and 21b are both within the above range.

[0067] The protrusion 11 is in the shape of a rectangular parallelepiped with the longitudinal direction being the front-rear direction. According to this structure, it is possible to more reliably suppress the provision of unnecessary information to the player in terms of aligning the direction with respect to the target line.

[0068] When the protrusion 11 is in a rectangular parallelepiped shape, the protrusion 11 may have irregularities on the surface. However, it is preferred that the protrusion 11 has no irregularities at a position visible to the player when addressing the ball. Therefore, the upper surface 11a of the protrusion 11 is preferably a flat surface. Furthermore, it is preferred that there are no protrusions visible to the player on both side surfaces (the side surface on the toe side and the side surface on the heel side) of the protrusion 11.

[0069] The lower limit of the ratio of the length in the front-back direction of the protrusion 11 to the length in the toe-heel direction (the aspect ratio) is preferably 1.5, more preferably 1.8, and even more preferably 2.0 from the viewpoint of being able to easily exert the function of aligning the direction with respect to the target line. On the other hand, the upper limit of the aspect ratio is preferably 3.5, more preferably 3.0, and even more preferably 2.7 from the viewpoint of achieving a balance with the size of the upper surface of the face portion 1.

[0070] The lower limit of the length L3 of the protruding portion 11 in the toe-to-heel direction may be 1.0 cm or 1.3 cm, while the upper limit of the length L3 may be 2.2 cm or 1.8 cm.

[0071] The lower limit of the ratio (L3 / L4) of the length L3 of the protrusion 11 in the toe-heel direction to the length L4 of the face portion 1 in the front-back direction may be 0.8, 0.9, or 1.0. On the other hand, the upper limit of the above ratio (L3 / L4) may be 1.5, 1.4, or 1.3. By configuring in this way, the face portion 1 and the protrusion 11 can be easily visually recognized as a whole. As a result, the direction alignment function relative to the target line can be easily exerted.

[0072] There may be a step between the upper surface of the face portion 1 (i.e., the flat surface 1b) and the upper surface 11a of the protrusion 11. In this case, from the viewpoint of making it easy for the protrusion 11 to perform the function of aligning the direction with respect to the target line, the upper limit of the height difference between the flat surface 1b of the face portion 1 and the upper surface 11a of the protrusion 11 is preferably 10 mm, and more preferably 5 mm.

[0073] Furthermore, it is preferred that the upper surface of the face portion 1 (i.e., the flat surface 1b) is coplanar with the upper surface 11a of the protrusion 11. According to this structure, it is possible to suppress the provision of unnecessary information to the player in terms of aligning the direction with respect to the target line. As a result, the protrusion 11 can more reliably perform the aligning function with respect to the target line.

[0074] like Figure 6 and Figure 7 As shown in FIG. 1 , the protrusion 11 has a concave portion 11b on the side surface. The concave portion 11b is formed on the side surface of the toe side of the protrusion 11. In other words, the concave portion 11b is formed at a position that the player cannot see when addressing the ball. The protrusion 11 has the concave portion 11b, so that the direction alignment function relative to the target line can be exerted, and the weight increase of the putter head 10 caused by the protrusion 11 can be suppressed.

[0075] In the putter head 10, the protrusion 11 can be arranged at a position closer to the heel side than the opening 13. Therefore, for example, the protrusion 11 can protrude from the middle part in the length direction of the club face 1. In this case, from the viewpoint of being able to easily exert the direction alignment function relative to the target line, the protrusion 11 is preferably arranged at a distance of more than 2.0 cm from the heel side based on the central part C, and more preferably arranged at a distance of more than 2.5 cm. It should be noted that, assuming that the protrusion 11 is arranged near the central part C, there is a situation where the hitting feeling when hitting the ball is different depending on the positional relationship between the protrusion 11 and the hitting point. In contrast, by controlling the configuration of the protrusion 11 based on the central part C within the above range, it is easy to stabilize the hitting feeling when hitting the ball.

[0076] The protrusion 11 preferably protrudes from the end of the heel side of the face portion 1. In this case, the face portion 1 and the protrusion 11 are formed as a whole in an L-shape when viewed from above. According to this structure, the entire length of the face portion 1 can be used to easily align the direction relative to the target line, and the hitting feeling when hitting the ball can be more reliably stabilized.

[0077] [Other embodiments]

[0078] The above embodiments are not intended to limit the configuration of the present invention. Therefore, the above embodiments can omit, replace or add the constituent elements of each part of the above embodiments based on the description of this specification and technical common sense, and they should all be interpreted as belonging to the scope of the present invention.

[0079] The specific shapes of the various parts in the putter head are not limited to the shapes described in the above embodiment. For example, the specific shapes of the face portion, the head bottom, and the protrusion may be changed based on the player's preference. In addition, the putter head may also be configured without the head bottom.

[0080] In the above embodiment, the structure of the putter head having the first identification mark M1, the second identification mark M2 and the auxiliary identification mark M3 is described. However, the putter head is not intended to exclude the structure having identification marks other than the above. For example, the putter head can also be configured to have more than two second identification marks. In this case, it can also have more than two protrusions extending backward from the above-mentioned club face. However, from the viewpoint of suppressing the distraction of the player's consciousness, the putter head preferably has only one second identification mark.

[0081] Furthermore, in the above embodiment, the structure having the auxiliary identification mark M3 in addition to the first identification mark M1 is described. However, the putter head may have only one of the first identification mark M1 and the auxiliary identification mark M3. In the case where the putter head has only the auxiliary identification mark M3, the auxiliary identification mark M3 can be used as the first identification mark.

[0082] There is a case where the first identification mark is preferably set at the bottom of the club head. However, in this putter head, the first identification mark is not excluded from being set at a place other than the bottom of the club head. For example, when the auxiliary identification mark M3 is used as the first identification mark, the first identification mark is set on the face portion.

[0083] In the above embodiment, the structure in which the first identification mark M1 is an opening that penetrates the bottom of the club head is described. On the other hand, a depression can be provided at the bottom of the club head instead of the opening as the first identification mark. In this case, the shape of the depression can be the same as the opening except that the depression does not penetrate the bottom of the club head. In addition, as the first identification mark M1, a line corresponding to the inner periphery of the opening and a colored portion corresponding to the opening can be provided on the upper surface of the bottom of the club head. In addition, when the depression is used as the first identification mark, the depression can also be colored in a color different from the surrounding bottom of the club head. By configuring in this way, it is easy to make the depression function as the first identification mark.

[0084] In the above embodiment, the protrusion is described as having two ridges. However, the protrusion may be configured to have only one ridge. Also, for example, the protrusion may be configured to have no ridge by gently curving the side edges on both sides of the upper surface of the protrusion.

[0085] The protrusion may have a shape without a recessed portion on the side surface.

[0086] The arrangement of the rod mounting portion is not limited to the position described in the above embodiment. For example, the rod mounting portion may be arranged at a position deviated from the extension line of the protruding portion in a plan view, which is also the intention of the present disclosure.

[0087] The putter head may not have the above-mentioned counterweight if the center of gravity of the putter head does not need to be adjusted. Furthermore, the counterweight can be arranged at any position in the putter head in consideration of the overall weight balance. Therefore, the putter head may also be configured to have counterweights other than those described in the above-mentioned embodiment.

Claims

1. A golf putter head, comprising a face portion, wherein the face portion has a face, wherein: have: a first identification mark capable of identifying a center portion of the club face in a toe-heel direction; a second identification mark capable of identifying a direction perpendicular to the club face when viewed from above, A shaft mounting portion is provided in the shaft face portion at a position closer to the heel side than the central portion. The second identification mark is a protrusion extending rearward from the face portion at a position closer to the heel side than the first identification mark.

2. The golf putter head according to claim 1, wherein: A club head sole extending rearward from the club face portion is provided. The first identification mark is disposed on the bottom of the club head.

3. The golf putter head according to claim 2, wherein: The first identification mark is an opening that passes through the bottom of the club head. The opening is provided in a semicircular shape from the rear surface of the face portion in a plan view.

4. The golf putter head according to any one of claims 1 to 3, characterized in that: The protrusion has a ridgeline extending perpendicularly to the club face in a plan view.

5. The golf putter head according to claim 4, wherein: The length of the ridgeline is greater than 1.5 cm.

6. The golf putter head according to claim 4, wherein: The protruding portion has the ridge lines on both sides in the toe-heel direction.

7. The golf putter head according to claim 6, wherein: The protrusion is in the shape of a rectangular parallelepiped with the front-to-back direction as the length direction.

8. The golf putter head according to any one of claims 1 to 3, characterized in that: The protrusion protrudes from an end portion of the face portion on the heel side.

9. The golf putter head according to any one of claims 1 to 3, characterized in that: An upper surface of the face portion and an upper surface of the protruding portion are in the same plane.

10. The golf putter head according to any one of claims 1 to 3, characterized in that: The protrusion has a recessed portion on a side surface thereof.

11. The golf putter head according to any one of claims 1 to 3, characterized in that: At least a portion of the lever mounting portion is located on an extension line of the protruding portion in a plan view.

12. The golf putter head according to claim 2 or 3, characterized in that: The club head sole has a weight at a toe side relative to the first identification mark.

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