Abstract: A hollow golf club head comprises a head main body made of a metallic material and having a bottom portion including a first portion and a second portion being connected with the first portion having difference in level, and at least one weight member having a specific gravity larger than that of the head main body and attached to the second portion of the head main body.

Abstract: This golf club includes a shaft, a golf club head, a first adapter, a second adapter, and a fixing member that fixes the first adapter in an interior space of a hosel portion. The shaft is configured to be coupled with an inclination relative to the coupling portion of the first adapter, and the first adapter is configured to be coupled with an inclination relative to the second adapter.

Abstract: The golf club head includes a crown portion, a face portion and a sole portion. The crown portion is formed to have an average thickness, in a range of a predetermined length toward a back side from a boundary between the crown portion and the face portion, that changes moving toward the heel side from the toe side.

Abstract: The golf club head includes a crown portion, a face portion and a sole portion. The crown portion is formed to have an average thickness, in a range of a predetermined length toward a back side from a boundary between the crown portion and the face portion, that is larger in a vicinity of a center in a toe-heel direction than at a toe side and a heel side.

Abstract: The golf club head includes a crown portion, a face portion, a sole portion, at least one recessed portion formed in one of the crown portion and the sole portion, at least one weight member configured to be attached to the recessed portion. The weight member has an upper surface, a lower surface and a side surface. The recessed portion is provided with a bottom surface correspond to the lower surface of the weight member, a first side wall surface that is continuous with the bottom surface and corresponds to the side surface of the weight member, and a second side wall surface that is continuous with the first side wall surface and constitutes an opening periphery of the recessed portion, and the second side wall surface is formed along the first side wall surface at a larger outer diameter than the first side wall surface.

Abstract: A head 2 includes a head body h1 and a face plate p1. The face plate p1 includes a plate front surface f1 having a hitting face 4, and a plate back surface b1. The plate front surface f1 has, on a peripheral edge part thereof, a step surface t1 positioned at a rear with respect to the hitting face 4. The head body h1 has a receipt surface u1 positioned at a rear of the plate back surface b1, a front disposition part z1 positioned at a front of the step surface t1, and a hosel 6. The front disposition part z1 includes a plastically deformed part d1 and a non-plastically deformed part n1. A clearance between the non-plastically deformed part n1 and the receipt surface u1 forms an engaging part E1 engaging a peripheral edge part of the face plate p1.

Abstract: A golf club 100 includes a head 200 having a hosel part 202, a shaft 300, and an engaging part 600 disposed at a tip part of the shaft 300. The engaging part 600 includes a sleeve 400 which has an oppositely tapered shape and is fixed to the tip part of the shaft 300. The hosel part 202 includes a hosel hole 204, and a hosel slit 206 which is provided on a side of the hosel hole 204 and enables the shaft 300 to pass through the hosel slit 206. The hosel hole 204 has an oppositely tapered hole having a shape corresponding to a shape of an outer surface of the engaging part 600. The engaging part 600 is fitted into the oppositely tapered hole.

Abstract: A golf club includes a shaft, a golf club head including a hosel having an aperture to which the shaft being secured, a securing member configured in a cylindrical shape to cover the shaft, the securing member including a first securing portion detachably fitted to the aperture of the hosel, and an insert member configured in a cylindrical shape to cover the shaft, the insert member including a second securing portion being detachably attachable to the aperture of the hosel and a third securing portion being detachably attachable to the first securing portion of the securing member. The golf club is capable of adopting a first mode of securing the first securing portion to the hosel, and a second mode of securing the insert member to the hosel and securing the first securing portion to the third securing portion of the insert member.

Abstract: A head h1 includes a crown c1, a sole s1, a face f1 and a hosel h1. The crown c1 includes a recess part RE1, a back part 100 positioned at a back of the recess part RE1, and a step surface ST1 positioned at a front of the back part 100 and positioned above a virtual extension surface HF1 of the back part 100. At least a part of the recess part RE1 extends in a toe-heel direction. At least a part of the step surface ST1 extends in the toe-heel direction. At least a part of the recess part RE1 may extend in a front-back direction.

Abstract: A golf club head comprises: a head main body having a hollow therein; a weight member disposed in the hollow and extending from its first end to its second end; a first end side portion of the weight member is secured to a first position of the head main body rotatably around a first axis at the first position so that a second end side portion of the weight member is movable to at least a second position and a third position of the head main body which positions are on a locus described by the first end side portion of the weight member during rotating about said first axis; and a fastener for fixing the second end side portion of the weight member to any of said at least second and third positions of the head main body.

Abstract: A golf club head includes a head body having a crown portion, a face portion, and a sole portion; at least one regular weight member configured to be detachably attached to the sole portion; and a cover kit configured to be detachably attached to the sole portion. The cover kit includes a cover provided with a decoration and configured to cover at least a portion of the sole portion, and optionally includes at least one auxiliary weight member configured to be attached to the cover. A weight of the cover kit is the same as the weight of the regular weight member. The sole portion is configured to selectively be in one of a first mode in which the regular weight member is attached, and a second mode in which the cover kit is attached.

Abstract: Provided is a golf club head that is able to suppress lowering of the pitch of a ball hitting sound. The golf club head according to the present invention includes a crown portion, a face portion, and a sole portion having at least one recessed portion. The recessed portion is configured to house a weight member such that the weight member does not protrude externally. The sole portion is provided with a placement region connected to the face portion and to be at least partially placed on a placement surface in a reference state, and a rear region arranged further to a back side in a face-back direction than the placement region and in which the recessed portion is arranged. The rear region inclines upward relative to the placement region toward the back side.

Abstract: A golf club 2 includes a head 4 and a shaft 6. A face 5 includes a sole s4 and a grounding member X1. The sole s4 includes a plurality of attaching portions r1. The grounding member X1 can be fixed to each of the plurality of attaching portions r1. A face angle can be varied depending on an attached position of the grounding member X1. Preferably, the golf club 2 further includes a non-grounding member X2. Preferably, the non-grounding member X2 can be fixed to each of the attaching portions r1. Preferably, attached position of the non-grounding member X2 does not influence the face angle.

Abstract: In a golf club according to one aspect of the present invention, a first coupling portion of a first adapter, to which the shaft is fixed, and a hosel first coupling portion of the golf club head are coupled so as to be incapable of axial rotation, and thus the shaft is attached to the golf club head so as to not be capable of axial rotation. Accordingly, the second adapter coupled to the first adapter at least does not need to be configured so as to be incapable of axial rotation, thus making it possible to increase the degree of freedom in adapter design.

Abstract: This golf club includes a shaft, a golf club head, a first adapter, a second adapter, and a fixing member that fixes the first adapter in an interior space of a hosel portion. The shaft is configured to be coupled with an inclination relative to the coupling portion of the first adapter, and the first adapter is configured to be coupled with an inclination relative to the second adapter.

Abstract: Provided is a golf club enabling the rotation position of an adapter to be viewed without disassembling a coupling structure for coupling a shaft and a golf club head. This golf club includes a shaft, a golf club head having a hosel portion, a first adapter that is accommodated in the interior space of the hosel portion through a shaft attachment hole in the hosel portion, a second adapter that has a through-hole through which the first adapter passes, and at least a portion arranged outside the attachment hole, and a fixing member detachably fixing the first adapter in the interior space of the hosel portion. The shaft is coupled with an inclination relative to the first adapter, the first adapter is coupled with an inclination relative to the second adapter, and the first adapter and the second adapter are coupled so as to be capable of axial rotation.

Abstract: A golf club head including a face portion having an improved restitution factor is provided. The golf club head has a hollow structure and includes a face portion, a crown portion, a sole portion, and a side portion. The crown portion includes a first region that spreads out forward of a boundary line that extends from a heel side to a toe side, and a second region that spreads out rearward of the boundary line and is thinner than the first region. The crown portion further includes a protruding portion formed at position that is in a vicinity of the boundary line, is on the second region, and is rearward of the boundary line via a gap.

Abstract: A golf club according to the present invention includes a golf club head body that has a crown portion and a sole portion and has an opening surrounded by the crown portion and the sole portion, and a face member that covers the opening of the golf club head body. The face member is formed in the shape of a cup having a face portion formed in a plate shape and a peripheral portion that extends from the peripheral edge of the face portion. In the peripheral portion of the face member, the portion that extends along the crown portion includes a first toe-side edge portion arranged on the toe side, a first heel-side edge portion arranged on the heel side, and a first central edge portion arranged between the first toe-side edge portion and the first heel-side edge portion.

Abstract: A head 4 includes a head main body h1, a socket 10, an attachment member 11, and a weight body 12. The head main body h1 includes a socket housing portion 14. The socket 10 is attached to the socket housing portion 14. The socket housing portion 14 includes a first opening K1 through which the socket 10 can be housed. The attachment member 11 is mechanically joined to the head main body h1. The attachment member 11 is disposed so as to block at least a part of the first opening K1. The attachment member 11 controls the falling off of the socket 10 from the first opening K1. The socket 10 includes a held portion 10b. The held portion 10b is pressed by the attachment member 11. The socket 10 is formed of a polymer.

Abstract: A golf club 2 includes a face angle adjusting mechanism 20 provided on a sole s4. The face angle adjusting mechanism 20 has a grounding member 22 which can be protruded from the sole s4, a storing part 24 storing the grounding member 22, and a coil spring 26 pressing the grounding member 22 so that the grounding member 22 is protruded from the storing part 24. The grounding member 22 is set so that a protruding amount of the grounding member 22 from the sole s4 is varied depending on its position of rotation angle about its axis in a state where the grounding member 22 is stored in the storing part 24. By changing a position of rotation angle of the grounding member 22, the protruding amount of the grounding member 22 is changed thereby to change a face angle.