Golf club head

Abstract

To provide a golf club head comprising a barycentric position adjustment mechanism having a new structure.SOLUTION: A golf club head 2 comprises a face part 4, a crown part 6, and a sole part 8. The golf club head 2 comprises a weight member wt capable of being wound, a first winding part b1 around which a first portion wt1 of the weight member wt can be wound, and a second winding part b2 arranged separately from the first winding part b1, and around which a second portion wt2 of the weight member wt can be wound. In the golf club head 2, the barycentric position of the golf club head 2 is adjusted by changing a weight ratio between the first portion wt1 and the second portion wt2. At least one of the first winding part b1 and the second winding part b2 may be rotatable in a winding direction and an advancing direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a golf club head.

Background Art

[0002] Heads capable of adjusting the center of gravity position of the head are known. Japanese Patent Application Laid-Open No. 2011-010722 discloses a golf club head having a weight body capable of moving a guide groove.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The inventor has found a new structure capable of adjusting the center of gravity position of the head. This new structure exhibits new effects due to the structure.

[0005] The present disclosure provides a golf club head having a center of gravity position adjusting mechanism with a new structure.

Means for Solving the Problems

[0006] In one aspect, the golf club head of the present disclosure has a face portion, a crown portion, and a sole portion. The head has a weight member that can be wound, a first winding portion that can wind a first portion of the weight member, and a second winding portion that is disposed away from the first winding portion and can wind a second portion of the weight member. By changing the weight ratio between the first portion and the second portion, the center of gravity position of the head is adjusted.

Effects of the Invention

[0007] As one aspect, a golf club head provided with a center of gravity position adjusting mechanism of a new structure may be provided.

Brief Description of the Drawings

[0008]

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Figure 21

Embodiments for Carrying Out the Invention

[0009] Hereinafter, the embodiments will be described in detail with appropriate reference to the drawings.

[0010] In the present application, a reference state, a reference vertical plane, a face-back direction, a toe-heel direction, and an up-down direction are defined. A state in which the head is placed on the horizontal plane HP at a predetermined lie angle and a real loft angle is defined as the reference state. As shown in Fig. 21, in this reference state, the center line Z of the hosel hole is included in the plane VP perpendicular to the horizontal plane HP. The plane VP is defined as the reference vertical plane. The predetermined lie angle and real loft angle are, for example, published in a product catalog.

[0011] In the present application, the toe-heel direction is the direction of the intersection line NL of the reference vertical plane VP and the horizontal plane HP (see Fig. 21).

[0012] In the present application, the face-back direction is a direction perpendicular to the toe-heel direction and parallel to the horizontal plane HP.

[0013] In the present application, the vertical direction is a direction perpendicular to the toe-heel direction and perpendicular to the face-back direction. In other words, in the present application, the vertical direction is a direction perpendicular to the horizontal plane HP.

[0014] In the present application, a face center Fc is defined. The face center Fc is determined as follows. First, in the vertical direction and the toe-heel direction, an arbitrary point Pr near the approximate center of the face surface is selected. Next, a plane is determined that passes through this point Pr, extends along the normal direction of the face surface at this point Pr, and is parallel to the toe-heel direction. An intersection line between this plane and the face surface is drawn, and the midpoint Px thereof is determined. Next, a plane is determined that passes through this midpoint Px, extends along the normal direction of the face surface at this point Px, and is parallel to the vertical direction. An intersection line between this plane and the face surface is drawn, and the midpoint Py thereof is determined. Next, a plane is determined that passes through this midpoint Py, extends along the normal direction of the face surface at this point Py, and is parallel to the toe-heel direction. An intersection line between this plane and the face surface is drawn, and the midpoint Px is newly determined. Next, a plane is determined that passes through this new midpoint Px, extends along the normal direction of the face surface at this point Px, and is parallel to the vertical direction. An intersection line between this plane and the face surface is drawn, and the midpoint Py is newly determined. This process is repeated, and Px and Py are sequentially determined. During the repetition of this process, when the distance between the new midpoint Py and the immediately preceding midpoint Py first becomes 0.5 mm or less, the new position Py (the last position Py) is the face center Fc.

[0015] FIG. 1 is a plan view of the golf club head 2 of the first embodiment as seen from the crown side. FIG. 2 is a bottom view of the head 2 as seen from the sole side. FIG. 3(a) is a cross-sectional view taken along line A-A of FIG. 2. FIG. 3(b) is a cross-sectional view taken along line B-B of FIG. 2. FIG. 3(c) is a cross-sectional view taken along line C-C of FIGS. 3(a) and 3(b).

[0016] The head 2 (head body h1) has a face portion 4, a crown portion 6, a sole portion 8, and a hosel portion 10. The face portion 4 has a face outer surface 4a and a face inner surface (not shown). The face outer surface 4a is a striking surface. The face outer surface 4a has a face center Fc. The crown portion 6 has a crown outer surface 6a and a crown inner surface (not shown). The sole portion 8 has a sole outer surface 8a and a sole inner surface 8b. (See FIG. 3(a)). The hosel portion 10 has a hosel hole 12. The head 2 is a wood-type head.

[0017] The head 2 has a first winding portion b1, a second winding portion b2, and a weight member wt. The first winding portion b1 and the second winding portion b2 are attached to the head body h1, and the weight member wt is passed between the first winding portion b1 and the second winding portion b2. In the present embodiment, the sole portion 8 has the first winding portion b1 and the second winding portion b2. The first winding portion b1 and the second winding portion b2 are connected by the weight member wt. The first winding portion b1 is provided on the toe side of the second winding portion b2. The first winding portion b1 is provided on the toe side of the face center Fc. The second winding portion b2 is provided on the heel side of the face center Fc.

[0018] The weight member wt is an elongated member. The weight member wt connects the first winding portion b1 and the second winding portion b2 and has a length that can secure a first portion wt1 wound around the first winding portion b1 or a second portion wt2 wound around the second winding portion b2. As forms of the weight member wt, linear and belt-like members are exemplified. As the linear weight member wt, a string, a wire, a metal wire, and a wire are exemplified. The wire is a concept including a wire and a wire rope twisted from a wire. The weight member wt may be, for example, a chain. The material of the weight member wt is not limited. The material of the weight member wt preferably has a large specific gravity. From the viewpoints of specific gravity and winding property, as the material of the weight member wt, a resin containing metal and metal powder is preferable. Preferred specific examples include stainless steel, tungsten nickel alloy, a resin material containing stainless steel, and a resin material containing tungsten nickel alloy.

[0019] In one weight member wt, the weight per unit length may be constant or may vary.

[0020] As shown in FIG. 3(a), the first winding portion b1 has a winding portion 20 and a central axis 22. The winding portion 20 constitutes a winding shaft (spool). The winding portion 20 is fixed to the central axis 22. With the central axis 22 as the rotation center, the winding portion 20 can rotate. The weight member wt is wound around the first winding portion b1 (winding portion 20). Among the weight member wt, the portion wound around the first winding portion b1 is referred to as the first portion wt1. The length (longitudinal length) of the first portion wt1 varies depending on the winding amount by the first winding portion b1. The weight of the first portion wt1 varies depending on the winding amount by the first winding portion b1.

[0021] The first winding portion b1 has an engagement hole 24. The shape of the engagement hole 24 engages with the tip of a tool for rotating the first winding portion b1. This tool is, for example, a screwdriver. By this tool, the first winding portion b1 can be rotated.

[0022] The first winding part b1 can rotate in the winding direction and the feeding direction. When the first winding part b1 rotates in the winding direction, the weight member wt is wound around the first winding part b1, and the length of the first part wt1 increases. When the first winding part b1 rotates in the feeding direction, the weight member wt is fed out from the first winding part b1, and the length of the first part wt1 decreases.

[0023] The configuration of the second winding part b2 is the same as that of the first winding part b1. As shown in FIG. 3(b), the second winding part b2 has a winding part 20 and a central axis 22. The winding part 20 constitutes a winding shaft (spool). The winding part 20 is fixed to the central axis 22. With the central axis 22 as the rotation center, the winding part 20 can rotate. A weight member wt is wound around the second winding part b2 (winding part 20). Among the weight member wt, the part wound around the second winding part b2 is referred to as the second part wt2. The length (longitudinal length) of the second part wt2 varies according to the winding amount by the second winding part b2. The weight of the second part wt2 varies according to the winding amount by the second winding part b2.

[0024] The second winding part b2 can rotate in the winding direction and the feeding direction. When the second winding part b2 rotates in the winding direction, the weight member wt is wound around the second winding part b2, and the length of the second part wt2 increases. When the second winding part b2 rotates in the feeding direction, the weight member wt is fed out from the second winding part b2, and the length of the second part wt2 decreases.

[0025] Due to the weight member wt, the rotation of the first winding part b1 and the rotation of the second winding part b2 can be interlocked with each other. When a rotational force is applied to rotate the first winding part b1 in the winding direction, the second winding part b2 can be rotated in the feeding direction following this. When a rotational force is applied to rotate the second winding part b2 in the winding direction, the first winding part b1 can be rotated in the feeding direction following this. This interlock enhances the ease of adjusting the head center of gravity position.

[0026] The weight member wt has a third portion wt3. The third portion wt3 is a portion that is not wound around any winding bodies b1, b2. In the present embodiment, the third portion wt3 is a portion between the first portion wt1 and the second portion wt2.

[0027] By being pulled by the first winding portion b1 and the second winding portion b2, tension can act on the third portion wt3. In the state where tension acts, the length of the third portion wt3 is substantially constant. In the state where no tension acts, slack can occur in the third portion wt3.

[0028] The second winding portion b2 has an engagement hole 24. The shape of the engagement hole 24 is such that the tip of a tool for rotating the second winding portion b2 engages therewith. This tool is, for example, a screwdriver. This tool can be common with a tool that can rotate the first winding portion b1.

[0029] As shown in FIG. 3(c), the first winding portion b1 has a rotation resistance mechanism 30. The rotation resistance mechanism 30 has a rotation gear 32 and a gear engagement portion 34. The rotation gear 32 is fixed to the central axis 22 and rotates integrally with the winding portion 20. The gear engagement portion 34 engages with the teeth 32a of the rotation gear 32. By this engagement, the rotation of the rotation gear 32 is blocked. When the rotation gear 32 tries to rotate, stress acts on the gear engagement portion 34. Due to the force from the rotation gear 32, the gear engagement portion 34 elastically deforms. When the force from the rotation gear 32 exceeds a predetermined value, the elastic deformation of the gear engagement portion 34 becomes large, and the gear engagement portion 34 gets over the teeth 32a. By repeating this elastic deformation, the rotation gear 32 rotates while receiving rotation resistance. The rotation resistance mechanism 30 imparts the same resistance force to the rotation in the winding direction and the rotation in the feeding direction.

[0030] The second winding portion b2 also includes the same rotation resistance mechanism 30 as the first winding portion b1.

[0031] By rotating the first winding portion b1 in the winding direction, the weight of the first portion wt1 increases, and the weight of the second portion wt2 decreases. That is, the weight of the weight member wt is mostly distributed to the first portion wt1. As a result, the center of gravity of the head 2 moves toward the first winding portion b1 side. In this embodiment, the center of gravity of the head 2 moves toward the toe side.

[0032] By rotating the second winding portion b2 in the winding direction, the weight of the second portion wt2 increases, and the weight of the first portion wt1 decreases. That is, the weight of the weight member wt is mostly distributed to the second portion wt2. As a result, the center of gravity of the head 2 moves toward the second winding portion b2 side. In this embodiment, the center of gravity of the head 2 moves toward the heel side.

[0033] The rotation resistance mechanism 30 contributes to maintaining the tension in the third portion wt3.

[0034] The head 2 has a first port p1 and a second port p2. The head body h1 of the head 2 has the first port p1 and the second port p2. In this embodiment, the first port p1 and the second port p2 are provided in the sole portion 8. As shown in FIG. 3(a), the first port p1 houses the first winding portion b1. The first winding portion b1 does not protrude outside the sole outer surface 8a. As shown in FIG. 3(b), the second port p2 houses the second winding portion b2. The second winding portion b2 does not protrude outside the sole outer surface 8a.

[0035] The head 2 has a receiving recess p3. The receiving recess p3 extends between the first port p1 and the second port p2. The receiving recess p3 forms a groove. The receiving recess p3 houses the third portion wt3. As long as tension is acting, the third portion wt3 is housed in the receiving recess p3. By being housed in the receiving recess p3, the third portion wt3 is contained inside the sole outer surface 8a.

[0036] FIG. 4(a) is an enlarged cross-sectional view showing the vicinity of the first winding portion b1 in the first modification, and FIG. 4(b) is an enlarged cross-sectional view showing the vicinity of the second winding portion b2 of this first modification. FIG. 4(c) is a cross-sectional view taken along the line C-C of FIGS. 4(a) and 4(b). Except for the points described below, this first modification is the same as the head 2 of the first embodiment.

[0037] In this first modification, instead of the rotation resistance mechanism 30, a ratchet mechanism 40 is provided. The first winding portion b1 and the second winding portion b2 have the ratchet mechanism 40.

[0038] The ratchet mechanism 40 has a rotating gear 42 and a gear engaging portion 44. The rotating gear 42 rotates integrally with the winding portion 20. The gear engaging portion 44 constitutes a switching cam. The gear engaging portion 44 has a first engaging portion 44a and a second engaging portion 44b. The gear engaging portion 44 can mutually shift between a first state in which the first engaging portion 44a is engaged with the rotating gear 42 and a second state in which the second engaging portion 44b is engaged with the rotating gear 42. That is, the gear engaging portion 44 can be switched between the first state and the second state. FIG. 4(c) shows the first state. In the first state, the rotation of the rotating gear 42 is permitted in the first direction R1, and the rotation in the second direction R2 is restricted. In the second state, the rotation of the rotating gear 42 is permitted in the second direction R2, and the rotation in the first direction R1 is restricted. The first direction R1 is the winding direction, and the second direction R2 is the feeding direction. This ratchet mechanism can switch the rotation direction between the winding direction and the feeding direction. This ratchet mechanism is used, for example, in a ratchet handle for tightening nuts and bolts.

[0039] When rotating the first winding part b1 in the winding direction, the first winding part b1 is set in the first state, the second winding part b2 is set in the second state, and the first winding part b1 is rotated in the winding direction. When rotating the second winding part b2 in the winding direction, the second winding part b2 is set in the first state, the first winding part b1 is set in the second state, and the second winding part b2 is rotated in the winding direction. The slack of the third part wt3 can be eliminated by setting both the first winding part b1 and the second winding part b2 in the first state and rotating either the first winding part b1 or the second winding part b2 in the winding direction.

[0040] FIG. 5(a) and FIG. 5(b) are enlarged cross-sectional views showing the vicinity of the first winding part b1 in the second modification. In FIG. 5(a), the first winding part b1 is in the pushed-in position. In the pushed-in position, the first winding part b1 is housed in the first port p1. A cross-sectional view taken along line A-A is attached to FIG. 5(a). In FIG. 5(b), the first winding part b1 is in the protruding position. A cross-sectional view taken along line B-B is attached to FIG. 5(b).

[0041] In this second modification, the configuration of the second winding part b2 is the same as that of the first winding part b1. FIGS. 5(a) and 5(b) are also enlarged cross-sectional views showing the vicinity of the second winding part b2 in the second modification.

[0042] In this second modification, instead of the rotation resistance mechanism 30, it has a rotation prevention mechanism 50 and an alternate mechanism 60. Also, in this modification, instead of the winding part 20, a winding part 70 is provided. The first winding part b1 has the rotation prevention mechanism 50, the alternate mechanism 60, and the winding part 70. The second winding part b2 has the rotation prevention mechanism 50, the alternate mechanism 60, and the winding part 70. Except for the points described below, this second modification is the same as the head 2 of the first embodiment.

[0043] The winding part 70 is not fixed to the rotary support shaft 72. The winding part 70 is rotatably supported by the rotary support shaft 72. The winding part 70 can rotate with respect to the rotary support shaft 72. The winding part 70 is fixed to the rotary support shaft 72 via a bearing 74.

[0044] The rotation prevention mechanism 50 has a rotation gear 52 and a gear engagement portion 54. The gear engagement portion 54 constitutes a rotation prevention portion that engages with the teeth 52a of the rotation gear 52 to prevent the rotation of the rotation gear 52. The rotation gear 52 is provided on the winding portion 70.

[0045] As shown in Fig. 5(a), when the first winding portion b1 is in the pushed-in position, the rotation gear 52 engages with the gear engagement portion 54, and the rotation of the first winding portion b1 is prevented. As shown in Fig. 5(b), when the first winding portion b1 is in the protruding position, the rotation gear 52 does not engage with the gear engagement portion 54, and the rotation of the first winding portion b1 is allowed.

[0046] When the first winding portion b1 in the pushed-in position is pressed, the first winding portion b1 moves to the protruding position, and the protruding position is maintained even when this pressing is released. When the first winding portion b1 in the protruding position is pressed, the first winding portion b1 moves to the pushed-in position, and the pushed-in position is maintained even when this pressing is released. Such an operation of the first winding portion b1 is also referred to as an alternate operation. The alternate mechanism 60 enables the alternate operation of the first winding portion b1. The alternate mechanism 60 enables the mutual transition between the pushed-in position and the protruding position. In the pushed-in position, the first winding portion b1 does not protrude outside the sole outer surface 8a. In the protruding position, the first winding portion b1 protrudes outside the sole outer surface 8a.

[0047] Note that the pressing of the first winding portion b1 can be achieved, for example, by pressing the first winding portion b1 with a finger. By simply pressing with a finger, the first winding portion b1 can mutually transition between the pushed-in position and the protruding position. Each time the first winding portion b1 is pressed, the pushed-in position and the protruding position are switched.

[0048] Fig. 6 is a cross-sectional view of the alternate mechanism 60. The upper figure in Fig. 6 is a cross-sectional view when the first winding portion b1 (second winding portion b2) is in the pushed-in position. The lower figure in Fig. 6 is a cross-sectional view when the first winding portion b1 (second winding portion b2) is in the protruding position.

[0049] The alternate mechanism 60 has a heart-shaped cam 62, a pin 64, a biasing member 66, and a moving part 68. The cam 62 is fixed to the moving part 68. The pin 64 is made of metal and is a rod-shaped member.

[0050] The pin 64 is fixed in a cantilever state with the end on the side far from the cam 62 (the lower end in FIG. 6) supported. The end 64a closer to the cam 62 (the upper end in FIG. 6) is a free end. An engaging portion 64b that engages with the cam 62 is provided at this free end 64a. The inside of the circle in FIG. 6 is a view of the free end 64a from another angle, and the engaging portion 64b is shown. The engaging portion 64b is formed by bending the end 64a of the pin 64. When the main portion 64c of the pin 64 is bent by an external force, it tends to return to its natural state (a straight extended state).

[0051] The biasing member 66 is a compression coil spring. The biasing member 66 always biases the moving part 68 upward. The biasing member 66 always biases the moving part 68 in a direction away from the cam 62 from the pin 64.

[0052] A rotary support shaft 72 is fixed to the moving part 68. As the moving part 68 moves, the first winding part b1 moves. The first winding part b1 moves integrally with the moving part 68.

[0053] The cam 62 has a first guide surface 62a, a concave portion 62b, and a second guide surface 62c. Also, a pin guiding portion 63 is provided in the vicinity of the cam 62.

[0054] When the pin 64 engages with the cam 62, the pushing-in position of the first winding part b1 is maintained against the biasing force of the biasing member 66 (see the upper figure in FIG. 6). When the engagement between the pin 64 and the cam 62 is released, due to the biasing force of the biasing member 66, the first winding part b1 becomes a protruding position (see the lower figure in FIG. 6).

[0055] When the first winding part b1 at the protruding position is pressed, the cam 62 that was away from the pin 64 approaches the pin 64. The engaging part 64b of the pin 64 abuts against the first guide surface 62a of the cam 62, is guided by the first guide surface 62a, and is further guided by the pin guide part 63 to reach the concave part 62b. When the engaging part 64b engages with the concave part 62b, the first winding part b1 is held at the pushed-in position (see the upper figure in Fig. 6).

[0056] When the first winding part b1 at the pushed-in position is pressed, the engaging part 64b disengages from the concave part 62b because the pin 64 tries to relieve the elastic deformation, moves along the second guide surface 62c, and moves away from the cam 62. As a result, the first winding part b1 returns to the protruding position.

[0057] Thus, in this embodiment, as the alternator mechanism 60, a heart-shaped cam method is adopted. As the alternator mechanism 60, known mechanisms such as a rotary cam method and a ratchet cam method can be adopted in addition to the heart-shaped cam method.

[0058] Fig. 7 is a bottom view of the head 100 of the second embodiment as viewed from the sole side. In the head 100, in the first winding part b1 and the second winding part b2, the winding part 20 has transparency. In the head 100, the first part wt1 wound around the first winding part b1 is visible from the outside. In the head 100, the second part wt2 wound around the second winding part b2 can be visible from the outside. Except for the points described above, the head 100 is the same as the head 2. The head 100 does not have the first winding part b1 and the second winding part b2 in the crown part.

[0059] FIG. 8 is a bottom view of the head 110 of the third embodiment as viewed from the sole side. In the head 110, in the first winding portion b1 and the second winding portion b2, notches 20a are provided in the winding portion 20. Through the notch 20a, the first portion wt1 wound around the first winding portion b1 is visible from the outside. Through the notch 20a, the second portion wt2 wound around the second winding portion b2 can be visible from the outside. Except for the points described above, the head 110 is the same as the head 2. The head 110 does not have the first winding portion b1 and the second winding portion b2 in the crown portion.

[0060] FIG. 9 is a bottom view of the head 120 of the fourth embodiment as viewed from the sole side. The head 120 (sole portion 8) has a first winding portion b1, a first port p1 that houses the first winding portion b1, a second winding portion b2, and a second port p2 that houses the second winding portion b2. Further, the head 120 (sole 8) has protrusions t1 and t2. The protrusions t1 and t2 are arranged on the heel side of the first winding portion b1. The protrusions t1 and t2 are arranged on the toe side of the second winding portion b2. The protrusions t1 and t2 are upright columns. There may be one protrusion, but two or more are preferred.

[0061] The weight member wt can be wound around the protrusion t1. The weight member wt can be wound around the protrusion t2. Since each of the protrusions t1 and t2 is relatively thin, when the weight member wt is wound around each of the protrusions t1 and t2, the length of the wound portion does not increase efficiently. As shown in FIG. 9, in the present embodiment, the weight member wt is wound around the protrusions t1 and t2 in a form that spans between the protrusions t1 and t2. In this form of winding, the protrusion winding portion wt31 wound around the protrusions t1 and t2 can be lengthened. It can be wound in various forms.

[0062] In the head 120 (sole part 8), the weight member wt has a first part (not shown) wound around the first winding part b1, a second part (not shown) wound around the second winding part b2, and a third part wt3 that is neither the first part nor the second part. The third part wt3 has a protrusion winding part wt31 wound around the protrusions t1, t2, an extending part wt32 extending from the protrusion winding part wt31 to the first winding part b1 (first part wt1), and an extending part wt33 extending from the protrusion winding part wt31 to the second winding part b2 (second part wt2).

[0063] The accommodation recess p3 accommodates the entire third part wt3. The accommodation recess p3 has a first recess p31 that accommodates the protrusion winding part wt31 together with the protrusions t1, t2, a second recess p32 that accommodates the extending part wt32, and a third recess p33 that accommodates the extending part wt33. The protrusions t1, t2 do not protrude outside the sole outer surface 8a. The third part wt3 does not protrude outside the sole outer surface 8a.

[0064] Except for the points described above, the head 120 is the same as the head 2. The head 120 does not have the first winding part b1 and the second winding part b2 in the crown part.

[0065] FIG. 10 is a bottom view of the head 130 of the fifth embodiment as viewed from the sole side. The head 130 (sole part 8) has a first winding part b1, a first port p1 that accommodates the first winding part b1, a second winding part b2, and a second port p2 that accommodates the second winding part b2. Further, the head 130 (sole 8) has protrusions t1, t2, t3, and t4. The protrusions t1 and t2 are arranged closer to the toe side than the protrusions t3 and t4. The protrusions t1 and t2 are arranged on the face side of the first winding part b1. The protrusions t3 and t4 are arranged on the face side of the second winding part b2.

[0066] In the head 130 (sole portion 8), the weight member wt has a first portion (not shown) wound around the first winding portion b1, a second portion (not shown) wound around the second winding portion b2, and a third portion wt3 that is neither the first portion nor the second portion. The third portion wt3 has a protrusion winding portion wt31 wound around the protrusions t1 and t2, a protrusion winding portion wt32 wound around the protrusions t3 and t4, and an extending portion wt33 extending from the first winding portion b1 (first portion wt1) to the second winding portion b2 (second portion wt2). Further, the third portion wt3 has an extending portion wt34 extending from the protrusions t1 and t2 to the first winding portion b1, and an extending portion wt35 extending from the protrusions t3 and t4 to the second winding portion b2.

[0067] The accommodation recess p3 accommodates the entire third portion wt3. The accommodation recess p3 has a first recess p31 that accommodates the protrusion winding portion wt31 together with the protrusions t1 and t2, a second recess p32 that accommodates the protrusion winding portion wt32 together with the protrusions t3 and t4, and a third recess p33 that accommodates the extending portion wt33. Further, the accommodation recess p3 has a fourth portion p34 that accommodates the extending portion wt34, and a fifth portion p35 that accommodates the extending portion wt35.

[0068] The protrusions t1 and t2 do not protrude outside the sole outer surface 8a. The protrusions t3 and t4 do not protrude outside the sole outer surface 8a. The third portion wt3 does not protrude outside the sole outer surface 8a.

[0069] Except for the points described above, the head 130 is the same as the head 2. The head 130 does not have the first winding portion b1 and the second winding portion b2 in the crown portion.

[0070] FIG. 11 is a bottom view of the head 140 of the sixth embodiment as viewed from the sole side. The head 140 (sole portion 8) has a first winding portion b1 and a second winding portion b2. The head 140 (sole portion 8) does not have the first port p1. The first winding portion b1 is exposed outside the sole outer surface 8a. The head 140 (sole portion 8) does not have the second port p2. The second winding portion b2 is exposed outside the sole outer surface 8a.

[0071] The head 140 (sole 8) has protrusions t1, t2, t3, and t4. The protrusions t1, t2, t3, and t4 are disposed on the heel side of the first winding portion b1. The protrusions t1, t2, t3, and t4 are disposed on the toe side of the second winding portion b2.

[0072] The head 140 (sole 8) does not have a receiving recess p3 for receiving the third portion wt3. The third portion wt3 protrudes outside the sole outer surface 8a. The protrusions t1, t2, t3, and t4 protrude outside the sole outer surface 8a.

[0073] The third portion wt3 can be wound around at least any one of the protrusions t1, t2, t3, and t4 between the first winding portion b1 (first portion wt1) and the second winding portion b2 (second portion wt2). Also, the third portion wt3 can be wound so as to pass between two or more protrusions selected from the group consisting of the protrusions t1, t2, t3, and t4. The third portion wt3 can be wound in various forms using a plurality of protrusions.

[0074] Except for the points described above, the head 140 is the same as the head 2. The head 140 does not have the first winding portion b1 and the second winding portion b2 on the crown portion.

[0075] FIG. 12 is a bottom view of the head 150 of the seventh embodiment as viewed from the sole side. The head 150 (sole portion 8) has a first winding portion b1 and a second winding portion b2. The head 150 (sole portion 8) does not have a first port p1. The first winding portion b1 is exposed outside the sole outer surface 8a. The head 150 (sole portion 8) does not have a second port p2. The second winding portion b2 is exposed outside the sole outer surface 8a. The head 150 (sole portion 8) does not have a receiving recess p3. A weight member wt (third portion wt3) extending from the first winding portion b1 to the second winding portion b2 protrudes outside the sole outer surface 8a. The head 150 (sole portion 8) does not have a protrusion around which the weight member wt can be wound. The first winding portion b1 and the second winding portion b2 do not have an engagement hole 24. The first winding portion b1 and the second winding portion b2 are non-rotatable. For example, with a finger, the weight member wt can be wound around the first winding portion b1 and the second winding portion b2.

[0076] FIG. 13(a) is a plan view of the head 160 of the eighth embodiment as viewed from the crown side, and FIG. 13(b) is a bottom view of the head 160 as viewed from the sole side. In the head 160, the crown portion 6 has a first winding portion b1 and a second winding portion b2. Further, the crown portion 6 has a first port p1 that houses the first winding portion b1, a second port p2 that houses the second winding portion b2, and a receiving recess p3 that extends between the first port p1 and the second port p2 and houses the third portion wt3 of the weight member wt. The sole portion 8 does not have the first winding portion b1 and the second winding portion b2. Except for the points described above, the head 160 is the same as the head 2.

[0077] FIG. 14 is a plan view of the head 170 of the ninth embodiment as viewed from the crown side. In the head 170, a lid member 172 that covers the first port p1, the second port p2, and the accommodation recess p3 is attached. The lid member 172 is attached by a known method such as fitting or screwing. The lid member 172 may cover at least a part of the first port p1, the second port p2, and the accommodation recess p3. For example, a first lid member that covers the first port p1 and a second lid member that covers the second port p2 may be provided. Except for the presence of the lid member 172, the head 170 is the same as the head 160.

[0078] FIG. 15(a) is a plan view of the head 180 of the tenth embodiment as viewed from the crown side, and FIG. 15(b) is a bottom view of the head 180 as viewed from the sole side. In the head 180, the crown portion 6 has a first winding portion b1 and a second winding portion b2. Further, the crown portion 6 has a first port p1 that accommodates the first winding portion b1, a second port p2 that accommodates the second winding portion b2, and an accommodation recess p3 that extends between the first port p1 and the second port p2 and accommodates the third portion wt3 of the weight member wt. In addition, the sole portion 8 has a first winding portion b1 and a second winding portion b2. Further, the sole portion 8 has a first port p1 that accommodates the first winding portion b1, a second port p2 that accommodates the second winding portion b2, and an accommodation recess p3 that extends between the first port p1 and the second port p2 and accommodates the third portion wt3 of the weight member wt.

[0079] FIG. 16(a) is a plan view of the head 190 of the eleventh embodiment as viewed from the crown side, and FIG. 16(b) is a bottom view of the head 190 as viewed from the sole side. In the head 190, the crown portion 6 has a first winding portion b1, and the sole portion 8 has a second winding portion b2. The crown portion 6 has a second port p2 that accommodates the first winding portion b1. The sole portion 8 has a second port p2 that accommodates the second winding portion b2. The accommodation recess p3 extends from the crown portion 6 to the sole portion 8. The accommodation recess p3 extends between the first port p1 located in the crown portion 6 and the second port p2 located in the sole portion 8. The accommodation recess p3 is a groove that accommodates the third portion wt3 of the weight member wt.

[0080] FIG. 17 is a bottom view of the golf club head 200 of the 12th embodiment as viewed from the sole side. FIG. 18(a) is a cross-sectional view taken along line A-A of FIG. 17. FIG. 18(b) is a cross-sectional view taken along line B-B of FIG. 17. FIG. 18(c) is a cross-sectional view taken along line C-C of FIGS. 18(a) and 18(b).

[0081] The head 200 (head body h1) has a face portion 4, a crown portion 6, a sole portion 8, and a hosel portion 10. The plan view of the head 200 as viewed from the crown side is the same as FIG. 1. The sole portion 8 has a sole outer surface 8a and a sole inner surface 8b. (See FIGS. 18(a) and 18(b).)

[0082] The head 200 has a first winding portion b1, a second winding portion b2, and a weight member wt. The first winding portion b1 and the second winding portion b2 are attached to the head body h1, and the weight member wt is passed between the first winding portion b1 and the second winding portion b2. In the present embodiment, the sole portion 8 has the first winding portion b1 and the second winding portion b2. The first winding portion b1 and the second winding portion b2 are connected by the weight member wt. The first winding portion b1 is provided on the toe side of the second winding portion b2. The first winding portion b1 is provided on the toe side of the face center Fc. The second winding portion b2 is provided on the heel side of the face center Fc.

[0083] The weight member wt is an elongated member. The weight member wt has a length that can connect the first winding portion b1 and the second winding portion b2 and secure a first portion wt1 wound around the first winding portion b1 or a second portion wt2 wound around the second winding portion b2.

[0084] As shown in Fig. 18(a), the first winding part b1 has a winding part 20 and a screw 23. The winding part 20 constitutes a winding shaft (spool). The screw 23 passes through a through hole 20b provided at the center of the winding part 20. Further, the screw 23 is screwed into a female screw hole 25 provided at the bottom p11 of the first port p1. The winding part 20 can rotate freely with respect to the screw 23.

[0085] A weight member wt is wound around the first winding part b1 (winding part 20). Among the weight member wt, the part wound around the first winding part b1 is the first part wt1. The length (longitudinal length) of the first part wt1 varies according to the winding amount by the first winding part b1. The weight of the first part wt1 varies according to the winding amount by the first winding part b1.

[0086] The first winding part b1 has an engagement hole 24. The shape of the engagement hole 24 engages with the tip of a tool for rotating the first winding part b1. This tool is, for example, a screwdriver. By this tool, the first winding part b1 can be rotated.

[0087] The head of the screw 23 has a screw hole 27. The shape of the screw hole 27 engages with the tip of a tool for rotating the screw 23. This tool is, for example, a screwdriver. By this tool, the screw 23 can be tightened or loosened.

[0088] The configuration of the second winding portion b2 is the same as that of the first winding portion b1. As shown in Fig. 18(b), the second winding portion b2 has a winding portion 20 and a screw 23. The winding portion 20 constitutes a winding shaft (spool). The winding portion 20 can rotate freely with respect to the screw 23. With the screw 23 as the rotation center, the winding portion 20 can rotate. A weight member wt is wound around the second winding portion b2 (winding portion 20). Among the weight member wt, the portion wound around the second winding portion b2 is the second portion wt2. The length (longitudinal length) of the second portion wt2 varies depending on the winding amount by the second winding portion b2. The weight of the second portion wt2 varies depending on the winding amount by the second winding portion b2.

[0089] Due to the weight member wt, the rotation of the first winding portion b1 and the rotation of the second winding portion b2 can be interlocked with each other. When a rotational force is applied to rotate the first winding portion b1 in the winding direction, the second winding portion b2 can be rotated in the feeding direction following this. When a rotational force is applied to rotate the second winding portion b2 in the winding direction, the first winding portion b1 can be rotated in the feeding direction following this. This interlock enhances the ease of adjusting the head center of gravity position.

[0090] The weight member wt has a third portion wt3. The third portion wt3 is a portion that is not wound around any winding bodies b1, b2. In this embodiment, the third portion wt3 is the portion between the first portion wt1 and the second portion wt2.

[0091] The second winding portion b2 has an engagement hole 24. The shape of the engagement hole 24 is such that the tip of a tool for rotating the second winding portion b2 engages. This tool is, for example, a screwdriver. This tool is common with the tool that can rotate the first winding portion b1.

[0092] As shown in FIG. 18(c), the first winding portion b1 has a rotational resistance mechanism 30. The rotational resistance mechanism 30 has a rotating gear 32 and a gear engaging portion 34. The rotating gear 32 is integral with the winding portion 20. The rotating gear 32 rotates integrally with the winding portion 20. The gear engaging portion 34 is engaged with the teeth 32a of the rotating gear 32. Due to this engagement, the rotation of the rotating gear 32 is blocked. When the rotating gear 32 attempts to rotate, stress acts on the gear engaging portion 34. Due to the force from the rotating gear 32, the gear engaging portion 34 deforms elastically. When the force from the rotating gear 32 exceeds a predetermined value, the elastic deformation of the gear engaging portion 34 increases, and the gear engaging portion 34 overrides the teeth 32a. By repeating this elastic deformation, the rotating gear 32 rotates while receiving rotational resistance. The rotational resistance mechanism 30 imparts the same resistance force to the rotation in the winding direction and the rotation in the feeding direction.

[0093] The second winding portion b2 also includes the same rotational resistance mechanism 30 as the first winding portion b1.

[0094] By rotating the first winding portion b1 in the winding direction, the weight of the first portion wt1 increases, and the weight of the second portion wt2 decreases. That is, the weight of the weight member wt is distributed more to the first portion wt1. As a result, the center of gravity of the head 2 moves toward the first winding portion b1 side. In the present embodiment, the center of gravity of the head 2 moves toward the toe side.

[0095] By rotating the second winding portion b2 in the winding direction, the weight of the second portion wt2 increases, and the weight of the first portion wt1 decreases. That is, the weight of the weight member wt is distributed more to the second portion wt2. As a result, the center of gravity of the head 2 moves toward the second winding portion b2 side. In the present embodiment, the center of gravity of the head 2 moves toward the heel side.

[0096] The rotational resistance mechanism 30 contributes to maintaining the tension in the third portion wt3.

[0097] In Fig. 18(a), the tightened state and the loosened state of the screw 23 are shown. The left figure in Fig. 18(a) shows the tightened state of the screw 23, and the right figure in Fig. 18(a) shows the loosened state of the screw 23.

[0098] Similarly, in Fig. 18(b), the tightened state and the loosened state of the screw 23 are shown. The left figure in Fig. 18(b) shows the tightened state of the screw 23, and the right figure in Fig. 18(b) shows the loosened state of the screw 23.

[0099] As shown in Fig. 18(a), by tightening the screw 23, the rotating gear 32 is pressed against the bottom p11 of the first port p1. By tightening the screw 23, the rotation of the first winding portion b1 (winding portion 20) can be stopped. By preventing the rotation of the first winding portion b1, the loosening of the third portion wt3 can be prevented. By loosening the screw 23, the rotation of the first winding portion b1 is allowed.

[0100] As shown in Fig. 18(b), by tightening the screw 23, the rotating gear 32 is pressed against the bottom p21 of the second port p2. By tightening the screw 23, the rotation of the second winding portion b2 (winding portion 20) can be stopped. By preventing the rotation of the second winding portion b2, the loosening of the third portion wt3 can be prevented. By loosening the screw 23, the rotation of the second winding portion b2 is allowed.

[0101] Thus, this embodiment has a locking mechanism for preventing the rotation of the winding portions b1 and b2. This locking mechanism can switch between locking and allowing rotation by operating the screw 23.

[0102] FIG. 19 is a perspective view showing a concavo-convex surface 210 that enables prevention of rotation of the winding unit 20. In the above-described 12th embodiment (FIG. 18), prevention of rotation of the winding unit 20 is achieved by bringing the bottoms p11 and p21 of the ports into contact with the rotating gear 32. From the viewpoint of ensuring this prevention of rotation, concavo-convex surfaces can be provided on the bottoms p11 and p21 of the ports and the rotating gear 32. By engaging these concavo-convex surfaces with each other, the effect of preventing rotation can be enhanced. The concavo-convex surface 210 is an example of such concavo-convex surfaces. The concavo-convex surface 210 has a first surface 212 provided at every predetermined angle in the circumferential direction and a second surface 214 provided between the first surfaces 212. In the circumferential direction, the first surface 212 and the second surface 214 are alternately arranged. A plurality of first surfaces 212 are arranged at equal intervals in the circumferential direction. A plurality of second surfaces 214 are arranged at equal intervals in the circumferential direction. The first surface 212 is an inclined surface. The first surface 212 is inclined with respect to the axial direction and also inclined with respect to the circumferential direction. The second surface 214 is parallel to the axial direction and perpendicular to the circumferential direction.

[0103] FIG. 20 is a side view showing a state in which the concavo-convex surface 210 meshes with a mating surface. This mating surface is a concavo-convex surface 220. The concavo-convex surface 220 is obtained by transferring the concavo-convex surface 210. The concavo-convex surface 220 has a first surface 222 and a second surface 224. In the circumferential direction, the first surface 222 and the second surface 224 are alternately arranged. A plurality of first surfaces 222 are arranged at equal intervals in the circumferential direction. A plurality of second surfaces 224 are arranged at equal intervals in the circumferential direction. The first surface 222 is an inclined surface. The first surface 222 is inclined with respect to the axial direction and also inclined with respect to the circumferential direction. The second surface 224 is parallel to the axial direction and perpendicular to the circumferential direction.

[0104] As shown in FIG. 20, in the meshing state of the concavo-convex surface 210 and the concavo-convex surface 220, the first surface 212 and the first surface 222 are in surface contact, and the second surface 214 and the second surface 224 are in surface contact.

[0105] For example, in the embodiment of FIG. 18, uneven surfaces 210 can be provided on the upper surfaces of the bottoms p11 and p21 of the ports, and an uneven surface 220 can be provided on the lower surface of the rotating gear 32. By the contact between the uneven surface 210 and the uneven surface 220, the winding portion 20 is configured to rotate in the winding direction. That is, when the uneven surface 210 and the uneven surface 220 are in contact with each other in a phase relationship different from the meshing state, due to the contact between the inclined surfaces (the first surface 212 and the first surface 222), a rotational moment is generated that rotates the winding portion 20 toward the meshing state. This rotational moment rotates the winding portion 20 in the winding direction. The uneven surface 210 and the uneven surface 220 constitute a locking fastening mechanism 226 that is locked as it rotates in the winding direction. The locking fastening mechanism 226 enhances the effect of preventing loosening of the third portion wt3.

[0106] [Effect] The golf club head of the present disclosure shown in each of the above embodiments has the following effects.

[0107] By changing the ratio between the winding amount at the first winding portion b1 and the winding amount at the second winding portion b2, the weight distribution of the weight member wt can be changed. By increasing the portion wound around the first winding portion b1, that is, the first portion wt1, the center of gravity position of the head can be moved toward the first winding portion b1 side. By increasing the portion wound around the second winding portion b2, that is, the second portion wt2, the center of gravity position of the head can be moved toward the second winding portion b2 side. Note that the winding amounts at the first winding portion b1 and the second winding portion b2 are also referred to as weight winding amounts. By changing at least one of the weight winding amounts of the first portion wt1 and the second portion wt2, the center of gravity position of the head is adjusted.

[0108] The positions of the first winding portion b1 and the second winding portion b2 can be freely set. Therefore, the desired adjustment of the center of gravity position can be achieved. For example, like the head 2 in FIG. 2, by arranging the first winding portion b1 on the toe side and the second winding portion b2 on the heel side, the center of gravity position of the head can be adjusted in the toe-heel direction. For example, like the head 190 in FIG. 16, by arranging the first winding portion b1 on the crown portion 6 and the second winding portion b2 on the sole portion 8, the center of gravity position of the head can be adjusted in the vertical direction. Since the positions of the first winding portion b1 and the second winding portion b2 can be set independently of each other, various adjustments are possible. By arranging protrusions in addition to the first winding portion b1 and the second winding portion b2, the degree of freedom of adjustment is further increased.

[0109] Due to the degrees of freedom in the arrangement of the first winding portion b1, the second winding portion b2, and further the protrusions, the center of gravity position of the head can vary in various directions. In the embodiment as shown in FIG. 2, the center of gravity position of the head can vary in the toe-heel direction. In the embodiments of FIGS. 16(a) and (b), the center of gravity position of the head can vary in the vertical direction. In the embodiment of FIG. 10, the center of gravity position of the head can vary in the face-back direction and the toe-heel direction. For example, in the embodiment of FIG. 2, the face-back direction positions of the first winding portion b1 and the second winding portion b2 can be made different. In this case, the center of gravity position of the head can vary in the toe-heel direction and the face-back direction. For example, in the embodiment of FIG. 16, the toe-heel direction positions of the first winding portion b1 and the second winding portion b2 can be made different. In this case, the center of gravity position of the head can vary in the vertical direction and the toe-heel direction. Thus, various adjustments are possible. The weight member wt that can be wound enables various weight distributions in the head due to its flexibility.

[0110] Two or more pairs of the first winding portion b1 and the second winding portion b2 can also be provided. With two or more pairs, the degree of freedom in adjusting the center of gravity position of the head can be further increased. For example, in the head 180 of FIG. 15, the first pair is arranged on the crown portion 6 and the second pair is arranged on the sole portion 8, enabling a more highly adjustable setting.

[0111] The weight member wt may be replaceable. For example, it may be replaced with a weight member wt having a different weight per unit length. Also, two or more bundled weight members wt may be used. These configurations increase the degree of freedom in adjustment.

[0112] By providing the first port p1, the first winding portion b1 can be made not to protrude from the outer surface of the head. By providing the second port p2, the second winding portion b2 can be made not to protrude from the outer surface of the head. By providing the housing recess p3, the third portion wt3 of the weight member wt can be made not to protrude from the outer surface of the head. These non - protruding states enhance the aesthetics of the head, reduce air resistance, and also reduce the ground resistance in the sole portion 8.

[0113] In the embodiment of FIG. 3, each of the first winding portion b1 and the second winding portion b2 can rotate in the winding direction and the feeding direction. Each of the first winding portion b1 and the second winding portion b2 has a rotational resistance in both the winding direction and the feeding direction. The first winding portion b1 and the second winding portion b2 do not rotate with a rotational force (moment) less than a predetermined threshold value, and rotate with a rotational force equal to or greater than the threshold value. With this configuration, a weight - fixing state in which the rotation of the first winding portion b1 and the second winding portion b2 stops with a tension applied to the third portion wt3 is easily achieved.

[0114] In the embodiment of FIG. 4, each of the first winding portion b1 and the second winding portion b2 can rotate in the winding direction and the feeding direction. Each of the first winding portion b1 and the second winding portion b2 has a ratchet mechanism. This ratchet mechanism can switch the rotation direction between the winding direction and the feeding direction. With this configuration, a weight - fixing state in which the rotation of the first winding portion b1 and the second winding portion b2 stops with a tension applied to the third portion wt3 is easily achieved.

[0115] In the embodiment of FIG. 5, each of the first winding part b1 and the second winding part b2 is configured to perform an alternate operation of switching between a protruding position and a pushing-in position every time it is pushed. In the protruding position, the rotation of the first winding part b1 and the second winding part b2 is allowed, and in the pushing-in position, the rotation of the first winding part b1 and the second winding part b2 is restricted. With this configuration, a weight fixing state in which the rotation of the first winding part b1 and the second winding part b2 stops while applying tension to the third part wt3 is easily achieved. Also, in the protruding position, it may be possible to turn the first winding part b1 and the second winding part b2 with a finger.

[0116] Not limited to the embodiment of FIG. 5, each of the first winding part b1 and the second winding part b2 may have a switching mechanism for switching between a rotation-allowed state and a rotation-restricted state. In this case, when adjusting the center-of-gravity position of the head, the first winding part b1 and the second winding part b2 can be set to the rotation-allowed state, and when setting to the weight fixing state, the first winding part b1 and the second winding part b2 can be set to the rotation-restricted state.

[0117] In the embodiments of FIGS. 3, 4, 5, and 18, the first winding part b1 and the second winding part b2 have a rotation restricting mechanism for restricting rotation in the feeding direction. The rotation resistance mechanism 30 (FIG. 3(c)), the ratchet mechanism 40 (FIG. 4(c)), the rotation prevention mechanism 50 (FIGS. 5(a), (b)), and the anti-rotation mechanism (FIGS. 18(a), (b)) are examples of the rotation restricting mechanism. With this rotation restricting mechanism, the weight fixing state in which the third part wt3 is not loose is easily achieved. Also, in the embodiments of FIGS. 18(a), (b), since two rotation restricting mechanisms are provided, loosening of the third part wt3 can be effectively suppressed.

[0118] The anti-rotation fastening mechanism 226 shown in FIGS. 19 and 20 can be applied, for example, to the embodiment of FIGS. 18(a), (b) as described above. Also, this anti-rotation fastening mechanism 226 can be applied in place of the rotation prevention mechanism 50 in the embodiment of FIG. 5. This anti-rotation fastening mechanism 226 can effectively suppress loosening of the third part wt3.

[0119] By imparting transparency to the first winding portion b1 and the second winding portion b2, like the head 100 in Fig. 7, the first part wt1 and the second part wt2 can be visually recognized from the outside. In the head 110 of Fig. 8, the first part wt1 and the second part wt2 can be visually recognized from the outside through the notch 20a. In this case, the winding amounts of the first part wt1 and the second part wt2 can be confirmed.

[0120] If either the first part wt1 or the second part wt2 can be visually recognized, the winding amount of the other can be assumed. From this perspective, a head that satisfies the following (a) or (b) is preferable. More preferably, like the embodiments of Figs. 7 and 8, it can be a head that satisfies the following (a) and (b). (a) The first part wound around the first winding portion is configured to be visually recognizable from the outside. (b) The second part wound around the second winding portion is configured to be visually recognizable from the outside.

[0121] As a configuration in which the first part wt1 and the second part wt2 can be visually recognized from the outside, in addition to the above-mentioned transparency and notch, it can also be achieved by protruding the winding portions b1 and b2 from the outer surface of the head, expanding the gap between the winding portions b1 and b2 and the ports p1 and p2, etc.

[0122] Like the heads 120, 130, and 140 in Figs. 9 - 11, in addition to the first winding portion b1 and the second winding portion b2, one or more protrusions around which a third part wt3 of the weight member wt can be wound may be provided. By winding the weight member wt around one or more protrusions in addition to the first winding portion b1 and the second winding portion b2, the degree of freedom in adjustment is further increased.

[0123] Similar to the head 140 in FIG. 11, the first winding portion b1, the second winding portion b2, and the third portion wt3 of the weight member wt may protrude from the outer surface of the head. In the head 140, the first port p1, the second port p2, and the accommodation recess p3 are unnecessary. Therefore, the molding of the head body h1 becomes easy, and the design freedom of the head body h1 is increased. Further, as in the head 150 of FIG. 12, when the first winding portion b1 and the second winding portion b2 protrude from the outer surface of the head, the first winding portion b1 and the second winding portion b2 can be rotated by a finger without using a tool.

[0124] As in the head 150 of FIG. 12, the first winding portion b1 and the second winding portion b2 may be non-rotatable. In this case, for example, the weight member wt can be wound around the first winding portion b1 and the second winding portion b2 with a finger. One of the first winding portion b1 and the second winding portion b2 may be rotatable and the other may be non-rotatable. From the viewpoint of the adjustability of the head gravity center position, the first winding portion b1 and the second winding portion b2 are preferably rotatable in the winding direction and the feeding direction.

[0125] In the head 140 of FIG. 14, a lid member 172 is provided. With this configuration, the first winding portion b1, the second winding portion b2, and the third portion wt3 can be protected from the intrusion of foreign matters. Further, it is possible to prevent grass or the like from being caught on the first winding portion b1, the second winding portion b2, and the third portion wt3. The lid member 172 may have transparency. Due to this transparency, it becomes possible to visually recognize the first winding portion b1, the second winding portion b2, and / or the third portion wt3 covered by the lid member 172 from the outside.

[0126] In a head with a large head volume, the first winding portion b1 and the second winding portion b2 can be separated, and the degree of freedom in arranging the first winding portion b1 and the second winding portion b2 is increased. Therefore, the adjustment range and the degree of freedom in adjusting the center of gravity position of the head are increased. From these viewpoints, the head is preferably a hollow head having a hollow portion. From the same viewpoint, the volume of the head is preferably 100 cc or more, more preferably 200 cc or more, still more preferably 300 cc or more, still more preferably 350 cc or more, still more preferably 400 cc or more, and still more preferably 420 cc or more. From the viewpoint of golf rules, the head volume is preferably 470 cc or less, and more preferably 460 cc or less.

[0127] Regarding the above-described embodiments, the following appendices are disclosed. [Appendix 1] A golf club head having a face portion, a crown portion, and a sole portion, a weight member that can be wound, a first winding portion that can wind a first portion of the weight member, a second winding portion that is disposed away from the first winding portion and can wind a second portion of the weight member, and having a golf club head in which the center of gravity position of the head is adjusted by changing the weight ratio between the first portion and the second portion. [Appendix 2] The golf club head according to Appendix 1, wherein at least one of the first winding portion and the second winding portion is rotatable in a winding direction and a feeding direction. [Appendix 3] The golf club head according to Appendix 1 or 2, wherein the first winding portion and the second winding portion are rotatable in a winding direction and a feeding direction. [Appendix 4] The golf club head according to Appendix 3, wherein the first winding portion and the second winding portion have a rotation restricting mechanism that restricts rotation in the feeding direction. [Appendix 5] a first port that houses the first winding portion including the first portion, A second port for accommodating the second winding part including the second part; A receiving recess for accommodating a third part which is a part of the weight part excluding the first part and the second part; The golf club head according to any one of Appendices 1 to 4 having the above. [Appendix 6] The golf club head according to any one of Appendices 1 to 5, wherein the first winding part and the second winding part are arranged on the sole part. [Appendix 7] The golf club head according to any one of Appendices 1 to 5, wherein the first winding part and the second winding part are arranged on the crown part. [Appendix 8] The first winding part is arranged on the sole part, The golf club head according to any one of Appendices 1 to 5, wherein the second winding part is arranged on the crown part. [Appendix 9] The golf club head according to any one of Appendices 1 to 8, satisfying the following (a) and / or (b). (a) The first part wound around the first winding part is configured to be visible from the outside. (b) The second part wound around the second winding part is configured to be visible from the outside. [Appendix 10] A golf club head having a face part, a crown part, and a sole part, A weight member that can be wound, A first winding part that can wind the first part of the weight member, A second winding part that is arranged away from the first winding part and can wind the second part of the weight member, Having, A golf club head in which the center of gravity position of the head is adjusted by changing the amount of weight winding of at least one of the first part and the second part.

Explanation of Signs

[0128] 2, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200 ··· head 4 ··· face part 4a ··· hitting surface 6 ··· crown part 6a ··· outer crown surface 8 ··· sole part 8a ··· outer sole surface 8b ··· inner sole surface 10 ··· hosel part 20 ··· winding part 20a ··· notch 23 ··· screw 24 ··· engaging hole 30 ··· rotational resistance mechanism 40 ··· ratchet mechanism 50 ··· rotation prevention mechanism 60 ··· alternate mechanism 70 ··· winding part 172 ··· cover member b1 ··· first winding part b2 ··· second winding part p1 ··· first port p2 ··· second port wt ··· weight member wt1 ··· first part wt2 ··· second part wt3 ··· third part

Claims

1. A golf club head having a face portion, a crown portion, and a sole portion, a weight member that can be wound, a first winding portion that can wind a first portion of the weight member, a second winding portion that is disposed away from the first winding portion and can wind a second portion of the weight member, and having, by changing the weight ratio between the first portion and the second portion, the center of gravity position of the head is adjusted, the first winding portion and the second winding portion are rotatable in the winding direction and the feeding direction, the first winding portion and the second winding portion have a rotation restricting mechanism that restricts rotation in the feeding direction, the rotation restricting mechanism has a detent fastening mechanism that is locked while rotating in the winding direction, a golf club head.

2. a first port that houses the first winding portion including the first portion, a second port that houses the second winding portion including the second portion, a housing recess that houses a third portion that is a portion of the weight member excluding the first portion and the second portion, The golf club head according to claim 1, having.

3. The golf club head according to claim 1 or 2, wherein the first winding portion and the second winding portion are disposed on the sole portion.

4. The golf club head according to claim 1 or 2, wherein the first winding portion and the second winding portion are disposed on the crown portion.

5. the first winding portion is disposed on the sole portion, The golf club head according to claim 1 or 2, wherein the second winding portion is disposed on the crown portion

6. The golf club head according to any one of claims 1 to 5, satisfying the following (a) and / or (b). (a) The first portion wound around the first winding portion is configured to be visible from the outside. (b) The second portion wound around the second winding portion is configured to be visible from the outside.

7. A golf club head having a face portion, a crown portion, and a sole portion, a weight member that can be wound, a first winding portion that can wind a first portion of the weight member, a second winding portion that is disposed away from the first winding portion and can wind a second portion of the weight member, and having, By changing the amount of weight wound around at least one of the first part and the second part, the center of gravity position of the head is adjusted. The first winding part and the second winding part are rotatable in the winding direction and the feeding direction. The first winding part and the second winding part have a rotation restricting mechanism that restricts rotation in the feeding direction. The golf club head, wherein the rotation restricting mechanism has a detent fastening mechanism that is locked while rotating in the winding direction.

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