JP2015173666A - Gravity center position variable golf putter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a putter head with high direct advance property and propulsion performance which can be easily adjusted by a golf player himself except for during plays.SOLUTION: In a putter head 1 having a cavity structure whose size is equal to or larger than that of a golf ball on a rear side, and a structure where an edge 2 of a sweet area on part of a putter face 1b can be exchanged by a user himself; a hosel 3 which connects the putter head 1 with a putter shaft 4 having line-ups on an off-set of a neck is provided so that the user himself can adjust and recombine a relative physical relationship between the user and the center of gravity of the putter head 1.

Description

  The present invention is a putter having both high straightness and propulsiveness that allows the golf player to easily adjust the operability of the golf putter that the golf player feels individually as a feeling, when the golf player himself is not playing. The present invention relates to a head and a connection between a putter head and a putter shaft.

[Prior art 1]
In the conventional golf putter, there is an example of a recombination type golf putter that is intended to adjust the operability of the golf putter that the golf player feels as a feeling with the golf putter, but the joined part of the putter shaft and the putter head As shown in the Japanese Patent Application Laid-Open No. 2012-55672, the hosel neck shape is prepared as a hosel having a different shape, and the angle in a plane perpendicular to the mounting direction of the hosel can be changed. Invented as a configuration. However, these proposals, when the hosel is connected to the putter head, are the connection between the ground contact surface of the ball and the upper surface of the putter head, and the lie angle formed by the putter head and the putter shaft is the shape of the hosel. Therefore, when the user rotates the hosel on the connecting surface of the putter head, the lie angle changes, and the loft angle, face angle, and shaft angle of the putter head change at the same time and deviate from the rules. There is a problem that an angle is generated. In addition, since multiple physical conditions such as angles change at the same time, it is difficult for the user to grasp the change in operability caused by changing the settings. Since it cannot be understood sensuously whether it is due to this, the policy of the next adjustment method is not fixed, and there is a problem that the performance of the desired golf putter cannot be quickly achieved.
Moreover, in the conventional recombination golf putter, as represented by JP 2012-55672 A and JP 2007-222257 A, a cylindrical hosel and putter shaft are inserted into a circular groove, and the insertion side is In addition, a mechanism has been invented for inserting and fastening screws from the back side, screwing in a putter shaft, and fixing with a locking bolt. The reaction applied to the joint directly affects the frictional force between the rigid bodies when fastened with screws, and the vertical angle of the face surface with respect to the ball launch direction changes due to the force of this reaction, or the fastened screws are loosened. However, in addition to the change in the shape of the golf putter during play, the current play rules of tightening work against looseness are illegal. The problem exists that it is a structure in which left open the possibility of falling into that situation. In particular, if the screw part protrudes from a part of the putter shaft or hosel, it contacts the caddy bag that stores the putter or the putter storage case provided in the riding golf cart, and the protruding screw is damaged, or the other party's storage part is There is a possibility of hurting.

[Conventional technology 2]
Next, with the conventional golf putter, the characteristics of the sweet area of the putter face, which is the striking surface of the golf ball of the putter head, are uniform, deviating from the rules for slight changes in operability felt by the player himself. It was impossible to adjust parts easily by exchanging the tools partially within the range. In other words, the repulsion coefficient that depends on the material of the sweet area existing on the putter face, the irregularity shape, and the rotation transmission characteristics to the ball that depend on the surface structure with the arrangement pattern are uniform, and the golf putter is This means that the propulsion performance when hitting cannot be adjusted and fine-tuned easily by the player himself. On the other hand, there is an invention according to Japanese Patent Application Laid-Open No. 2002-224254 as a prior patent of a golf putter in which the putter face can be rearranged, but this replaces most of the volume of the putter head including the entire putter face. When different members are exchanged, the center of gravity of the putter head changes greatly, and the change in operability includes not only the characteristics of the sweet area on the surface of the putter face but also the effect of the change in the center of gravity of the putter head. Similar to the contents described in [0002], it is difficult to grasp the state of change in operability due to the user changing the setting, and as a result, it is not possible to intuitively understand which physical element is responsible for the adjustment effect. However, there is a problem that the policy of the next adjustment method is not determined and the performance of the desired golf putter cannot be quickly achieved.

[Conventional technology 3]
There are prior patents represented by Japanese Patent Application Laid-Open No. 2007-222257 as putter heads intended to be used by both right-handed and left-handed users. In this structure, a female putter shaft is inserted to insert a putter shaft. Since the putter shaft is screwed into a groove with a screw, as in the detailed description in [0002], if the direction of the dominant hand is different, if the same part is used, the screw will loosen when the ball is hit. Torque works. Further, in this prior patent, a putter shaft or hosel is inserted on the upper surface of the putter head parallel to the ground. Therefore, if a straight putter shaft is directly attached, the lie angle becomes 90 degrees, which deviates from the current regulations. To avoid this, in order to make the lie angle less than 80 degrees, it is necessary to make the hosel or putter shaft inclined, but to make an offset structure that matches the user's feeling, that is, a goose shape In addition, if a putter shaft or hosel with a lie angle in the mounting surface is to be inserted at an angle, the assembly in the reverse direction will be restricted unless the neck or hosel is composed of symmetrical parts. As a result, the usage described in the prior patent is physically impossible. Moreover, when a cylindrical part is attached in the reverse direction, positioning cannot be performed. Furthermore, as described in detail in [0002], if the same part is covered in the opposite direction, the loft angle, face angle, and shaft angle change at the same time. There is a problem that an angle deviating from the above occurs. In addition, since multiple physical conditions change at the same time, it is difficult for the user to grasp the change in operability, and as a result, it is difficult to understand the physical effect of the adjustment effect. There is also a problem that the policy of the adjustment method is not fixed and the performance of the desired golf putter cannot be achieved as soon as possible.

[Prior art 4]
In addition, the conventional golf putter head allows for straightness and propulsion by allowing the rotational component in the horizontal plane of the putter head to be shaken which causes an error in the launch direction of the ball when hitting with the golf putter. Therefore, by lowering the height of the putter head with respect to the golf ball diameter, the center of gravity is lowered and the center of gravity is deepened by extending the rigid body in the direction opposite to the ball propulsion direction in the horizontal direction. Yes. However, with this structure, when the ball is launched with a golf putter due to the low center of gravity, reverse rotation, that is, so-called backspin is easily applied to the traveling direction of the ball, and loss of propulsive property due to backspin cannot be prevented. It was.

JP2002-224254 JP2012-055672A JP2007-222257 JP2000-140169A JP2003-210629 JP2005-199060

  The problem to be solved is that when the golf player operates the golf putter, the golf ball feels straight, propulsive, rotational, feel, etc. However, the feeling cannot be kept almost constant by adjusting / fine-tuning the tool without changing the way the golf putter is struck by the change in feeling due to the fluctuation of the mental.

  The problem to be solved is that in the case of the conventional recombination-type and assembly-type golf putters, when the hosel is recombined, the center of gravity of the putter head and the relative position of the putter head due to the combined shape of the putter head and the putter shaft Not only the positional relationship changes, but there are cases where the lie angle, loft angle, face angle, shaft angle change at the same time, leading to a shape that deviates from the rule, and the above-mentioned multiple physical conditions change at once Therefore, the tool cannot be easily fine-tuned to the characteristics preferred by the user, and the cause of the adjustment effect is difficult to understand by the user himself. Further, in the fastening and fixing portion of the conventional recombination golf putter, the frictional force of the screw of the fastening portion becomes a force that directly receives the reaction of the striking force when the golf ball is hit with the golf putter. The change of the face angle due to the looseness of the screw is inevitable, the protrusion of the screw to be fixed, damage due to the shearing stress of the screw that occurs in the fastening part when storing the golf putter, and the caddy bag and the riding golf cart This is in that the storage part such as the golf putter storage container is damaged.

  The problem to be solved is that, in the conventional recombination type and assembly type putter heads, not only the characteristics of the striking surface of the putter face but also the center of gravity of the putter head greatly change due to the replacement of the member including the putter face. As a result, it is difficult for the user himself to understand which factor is the cause of the adjustment effect, and the policy of the next adjustment method is not determined, and the desired golf putter performance cannot be achieved quickly.

  The problem to be solved is that the putter head is intended to be used by both right-handed and left-handed users, and the putter shaft is screwed into the groove with the female thread. When it is covered with the same parts, it is structured to receive torque directly in the direction of loosening when the ball is hit. In addition, in order to make the lie angle less than 80 degrees, it is a putter head that needs to have an inclination on the hosel or putter shaft, and when trying to make an offset structure that matches the user's feeling, that is, a goose shape The neck or hosel must be composed of symmetrical parts and cannot be composed of one kind of part. In addition, when creating a symmetrical golf putter shape, it is not possible to position. Furthermore, if you try to cover with the same hosel or putter shaft tilted in the opposite direction, the loft angle, face angle and shaft angle change at the same time, and the angle deviates from the rule when the user rotates it The point where occurs. In addition, since multiple physical conditions change at the same time, it is difficult for the user to grasp the state of change in operability, and as a result, it is difficult to intuitively understand which physical element is responsible for the adjustment effect. It is in the point which does not lead to the search of the adjustment method.

The problem to be solved is a loss of propulsive property due to backspin which is likely to occur due to the low center of gravity in the conventional putter head shape.

  The putter head 1 in the golf putter 100 of the present invention described in claim 1 is bilaterally symmetric, and according to the invention described in claim 4, the putter head 1 and the putter shaft 4 or the putter head 1 and the putter shaft 4. The polygonal socket 8 and the polygonal plug 11 which are the polygonal groove | channels or the protrusion structure of the same specification in the cross-sectional shape for couple | bonding the hosel 3 which is these coupling components are provided. Further, in the golf putter 100 according to the present invention, the angle formed by the ground contact surface of the putter head 1 and the putter shaft 4, that is, the lie angle is less than 80 degrees depending on the angle of the polygon socket 8 provided on the putter head upper surface 1d. The polygonal socket 8 provided on the upper surface 1d of the putter head so as to be maintained at about 70 degrees, which is natural and easy to hit when putting a putter by a user. According to the present invention, the angle rising from the face surface is parallel to the lie angle of about 70 degrees from the left and right upper portions of the head when viewed from the front of the face surface. That is, the lie angle is uniquely determined by the angle of the insertion axis vector A of the polygon socket 8 on the putter head upper surface 1d with respect to the ground contact surface.

  The hosel 3 of the golf putter 100 according to the present invention has a polygonal socket 8 and a polygonal plug 11 at both ends in order to be connected to the putter head 1 and the putter shaft 4 as in the inventions of claims 2 to 4. The insertion axis vector A and the insertion axis vector B, which are axis vectors in the respective insertion directions, are characterized by being parallel and not in the position of torsion. It is characterized in that a preferred hosel that differs only in the offset amount of the rectangular socket 8 and the polygonal plug 11 can be selected and the putter head 1 and the putter shaft 4 can be connected. At that time, when the polygonal plug 11 on the hosel 3 side is fitted into the polygonal socket 8 on the putter head 1 side, the angle in the plane perpendicular to the lie angle is changed to a polygonal shape according to the invention of claims 2 to 4. In addition, it is characterized in that the positions corresponding to the number of sides of the polygon can be selected.

  The golf plug 100 according to the present invention is characterized in that the surfaces of the polygon plugs 11 and the polygon sockets 8 at both ends of the hosel 3 of the golf putter 100 according to the present invention are parallel to each other.

  The putter head 1 of the golf putter 100 according to the present invention is present on the putter face 1b of the putter head 1 in a series of putter operations in which the user launches a golf ball in the invention described in claim 5. Of the innumerable hitting points for the golf ball, the sweet spot plate 2 that can transmit the mechanical momentum to the golf ball most efficiently with respect to the launch direction of the ball and the sweet area plate 2 including the surrounding sweet area can be attached and detached. It is a putter head 1 having a structure, and a sweet area plate 2 having a texture and a concavo-convex structure that fits the feeling desired by the user is fitted on the putter face 1b, and is a dedicated fastening part based on screw fastening. It has a mechanism that can be fixed.

  The shape of the putter head 1 according to the present invention is such that a concave shape having an opening and a depth equal to or slightly larger than the size of the ball is formed on the back surface 1e of the symmetrical putter head as in the invention described in claim 8. It has been scooped out to become a tee structure 7. As a result, it is characterized in that the height and depth are equal to or higher than that of the ball.

  The golf putter 100 according to the present invention is characterized in that a symmetrical putter can be assembled using the same putter head 1, the same putter shaft 4, and the same hosel 3. Further, the invention according to claim 10 is characterized in that a head hole filling plug 13 which is a part for filling a non-inserted polygonal hole is prepared as necessary.

  In the golf putter 100 according to the present invention, the hoist 3 according to the present invention or the polygonal socket 8 present in the putter head 1 can be fastened and fixed with a screw by fixing a general straight piper shaft 4 without bending with a screw. In order to achieve this, the shaft plug 9 is provided as a part that can be bonded to the putter shaft 4 so that the polygonal plug 11 is formed at the tip of the putter shaft 4 opposite to the side on which the grip 14 is mounted. And

  In the present invention, when the hosel is fitted to the uneven structure having a polygonal cross section provided on the upper surface of the putter head, the user can select a plurality of positions according to the polygonal shape so that the user can When the face is placed perpendicular to the ball launch direction, the user can change the relative position of the center of gravity of the user and the putter head and the context of the sweet spot. At any position, not only the lie angle but also the loft angle, shaft angle and face angle are not changed. However, in the case of direct piercing of the putter shaft, since there is no angle dependency, there is an effect that the relative position of the barycentric point does not change.

  In the polygonal concavo-convex shape at both ends of the hosel of the golf putter according to the present invention, since the surfaces formed by the sides of the polygon are parallel in the structure of both ends, the rotation angle and direction of the putter head and the hosel are the same. By reconfiguring the putter shaft and hosel in the opposite direction at the rotation angle, the user always puts the putter face on the ball even when a grip that does not have rotational symmetry with respect to the shaft axis is attached to the putter shaft. There is an effect that it can be directly opposed.

  The putter head according to the present invention allows the user to easily replace the sweet area plate with a screw-fastened pair of fastening parts by itself without changing the main center of gravity of the putter head. There is an effect that it is possible to change only the characteristics of the striking surface, and this has the effect that the user can quickly adjust the feel and feel to the desired characteristics.

  Since the hosel connection mechanism of the golf putter according to the present invention has a polygonal concavo-convex shape in cross section and is screwed on the insertion shaft, the reaction of the impact force when hitting the golf putter is a polygonal surface. Therefore, it does not resist the frictional force between the rigid bodies that are directly screwed together, and the face angle change during play due to loosening of the fastening part and the retightening work that is a foul according to the current rules are not possible. There is a required effect. Further, since the screw to be fastened does not protrude, there is an effect that the fastening portion and the screw are not broken or the storage container of the golf putter is not damaged.

  The putter head according to the present invention can be used by both right-handed and left-handed users. When the putter shaft is covered with the same part, there is an effect that the structure in which the torque in the direction in which the screw is loosened when the ball is hit does not work. In addition, when forming a lie angle of less than 80 degrees with the putter head, it is not necessary to have an inclination on the hosel or putter shaft, and when trying to create an offset structure that matches the user's feeling, that is, a goose shape The effect that the neck or hosel can be composed of the same parts. Furthermore, it is possible to make a golf putter shape that is symmetrical to the left and right by making it possible to position by a polygon structure of the same standard that is symmetrical to the left and right. Furthermore, when the same hosel or putter shaft is inserted in the opposite direction, only the relative positional relationship between the user and the center of gravity of the putter head changes without changing the loft angle, face angle, and shaft angle at the same time. The effect of not generating an angle that deviates from the rule. As a result, the user can sensuously understand which physical element is responsible for the effect of adjustment, and the policy of the next adjustment method is determined, so that the desired golf putter performance can be achieved quickly.

The shape of the putter head according to the present invention has a cavity structure on the back surface. As a result, it has two features of a high center of gravity due to an increase in the height of the putter head and a wide sweet area due to the cavity structure. The problem of easy backspin to the golf ball launched by the golf putter is solved, and top spin, which is the rotation in the same direction as the traveling direction of the golf ball, is easily applied. There is an effect that sex can be obtained simultaneously.
It also has the effect of preventing the center of gravity from rising too high due to the cavity structure and reducing the weight of the putter head.

FIG. 1 is an explanatory view showing the overall structure and shape of a golf putter in which a putter shaft and a putter head according to the present invention are configured by a connection mechanism according to the present invention from the front. (Example 1) FIG. 2 is an explanatory view showing the structure and shape around the putter head as seen from the front. (Example 1) FIG. 3 is an explanatory view showing the structure and shape around the putter head as seen from the rear. (Example 1) FIG. 4 is an explanatory diagram showing the structure and shape of the putter head and the hosel as viewed from above, and the connectivity between the putter head and the hosel. (Example 1) FIG. 5 shows the connectivity between the putter head and the hosel, and is an explanatory view of the hosel insertion port on the top surface of the putter head as viewed from the front. (Example 2) FIG. 6 is an explanatory view showing a mechanism for coupling the sweet area plate of the putter head and the head (Example 1). FIG. 7 is an explanatory diagram showing the structure and shape of a shaft plug serving as a mediating part for joining the putter shaft and the hosel or the head, and the connectivity of the putter shaft. (Example 1) FIG. 8 is an explanatory diagram showing the structure, shape, and head hole filling plug of the hosel. (Example 1, Example 2) FIG. 9 is an explanatory view showing the overall structure and shape from the front of a golf putter in which a putter shaft and a conventional general putter head are configured by a connection mechanism according to the present invention (Example 3). .

  It can be assembled mainly by 4 parts of putter head 1, hosel 3, putter shaft 4, and sweet area plate 2 of putter head 1, and the user can easily adjust the center of gravity and sweet area characteristics by himself / herself. Each component is basically screw-fastened so that the angle can be adjusted and recombined.

  Hereinafter, the golf putter 100 according to the first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall view of a golf putter 100 according to the present invention as viewed from the front, and generally shows the structure, shape, and relationships among main components. A straight putter shaft 4 with a general grip 14 and a shaft plug 9 according to the present invention attached to each end and without a bend is mounted on the hosel 3 according to the present invention with a fitting part according to the present invention. A polygon socket 8 and a polygon plug 11 are connected to each other, and the hosel is connected to the putter head 1 according to the present invention with a polygon socket 8 and a polygon plug 11 having a polygonal cross section having the same standard. It is connected. If the coupling axis vector of the putter shaft 4 and the hosel 3 is B, and the coupling axis vector of the hosel and the putter head is A, A and B are parallel. In addition, a plurality of polygon sockets 8 are provided on the putter head 1, but the head hole filling plug 13 is inserted in a portion where the hosel is not coupled so that the upper surface of the putter head becomes a continuous surface. It has a structure.

  FIG. 2 shows an example of the putter head 1 and hosel 3 according to the present invention, and shows the structure and shape around the putter head 1 when the putter head 1 is viewed from the front. 1 is a putter head, 1b is a putter face, 2 is a replaceable sweet area plate, 3 is a hosel that can be replaced and the mounting angle can be changed, and 4 is a putter shaft. The putter face 1b is a line-symmetric figure having a symmetric line ab in the height direction when viewed from the front. The upper surface 1d of the putter head is also a line-symmetric figure, and if it is a line-symmetric line ad, the angle formed by the surface S composed of ab and ad and the insertion axis vector A of the putter shaft 4 is 10 degrees or more. At this time, when the bottom surface, that is, the sole is grounded to the ground, the angle between the putter shaft 4 and the ground, the lie angle is less than 80 degrees, and in fact, the lie angle of about 70 degrees, which is considered to be easy for the user to hit. It is a mechanism that can be joined to form a corner.

  FIG. 3 shows an embodiment of the putter head 1 and hosel 3 according to the present invention, showing the structure from the rear, and shows the structure and shape around the putter head 1 when the putter head 1 is viewed from the rear. FIG. Reference numeral 5 denotes a hosel fastening through hole through which a screw for fixing and fastening a hosel or a direct piercing putter shaft passes, and penetrates from the upper surface. Reference numeral 6 denotes a sweet area plate fastening through-hole through which a screw for fixing and fastening the sweet area plate 2 fitted in a part of the putter face 1b passes. 7 is a cavity structure having an opening and a depth substantially equal to or larger than the ball diameter. Therefore, the head height is inevitably higher than the ball and the center of gravity is raised. Further, the screw 15 is passed through the hosel fastening through hole 5 and fastened on the hosel on the axis vector A.

  FIG. 4 shows the structure of the putter head 1 and hosel 3 according to the present invention from above. The concave structure 8 in FIG. 4 is a hosel 3 or a polygon socket that is a polygonal hole for inserting the putter shaft 4, and a hosel that is a through hole for a screw to pass through the polygonal groove. It is comprised from the through-hole 5 for fastening. In the case of this figure, the eight holes formed in the left and right symmetrical putter head upper surface 1d are opened in the same number in two left and right symmetrical directions, and the neck and putter shaft are angled to make the lie angle around 70 degrees. The straight putter shaft 4 can be directly inserted from either the left or right side without being attached.

  FIG. 5 illustrates the connectivity between the putter head 1 and the hosel 3 according to the present invention, and is a view of the insertion port of the hosel 3 on the upper surface 1d of the putter head as viewed from the front. As shown in FIG. 5, the hosel 3 is attached to the polygon socket 8 in a polygonal side pattern as shown in FIG. 5, and the offset amount between the putter shaft 4 and the putter face 1 b and the user and the putter head 1. The relative position of the center of gravity can be varied. The polygon socket 8 of the hosel 3 and the polygon side of the polygon plug 11 are parallel (ef // gh).

  FIG. 6 is an explanatory view showing a mechanism for coupling the sweet area plate 2 and the putter face 1b on the putter head 1 according to the present invention. The sweet area plate 2 is fitted into a sweet area plate fitting groove 1c existing on the putter face 1b of the putter head 1 main body. Further, a set screw hole is provided in the back surface 2b of the sweet area plate, and when it is fitted into the putter head 1, the screw can be fastened and fixed from the putter head back surface 1e. As another embodiment, a male screw stud may be provided on the sweet area plate, the sweet area plate may be fitted into the fitting groove 1c, and a nut fastening mechanism from the putter head back surface 1e may be used.

  FIG. 7 shows a shaft plug 9 for connecting the putter shaft 4 and the hosel 3 or the putter shaft 4 and the putter head 1. By inserting and bonding the plug shaft connecting portion 12 of the shaft plug 9 into the pipe of the putter shaft 4, the polygon socket 8 existing on the upper surface 1 d of the putter head of the present invention or the polygon existing at one end of the hosel. The fitting and fastening to the socket 8 is possible. In this case, the female screw hole 11 is formed in the shaft plug 9, but as another embodiment, a protruding male screw may be used, and the fastening on the polygon socket 8 side at this time is performed by a nut. Moreover, the shape which covers the plug shaft connection part 12 out of the putter shaft 4 in the connection adhesion | attachment of the shaft plug 9 and the putter shaft 4 may be sufficient.

FIG. 8 shows an example of a hosel that determines the offset amount of the neck. 8 is a receiving side of the polygon plug 11 of the shaft plug 9 bonded to the putter shaft 4, and the polygon plug 11 of FIG. 8 is inserted into the polygon socket 8 on the putter head 1d. However, the offset amounts (L _offx ; x is 1 or 2) are different for each part. Reference numeral 13 in FIG. 8 denotes a head hole filling plug for filling the hole of the polygon socket 8 in FIG. 4 of the putter head upper surface 1d, which has a female set screw hole 10 and a polygonal plug 11, and the female set screw hole 10 The other side is a smooth surface. When the head hole plug 13 is fitted into the polygon socket 8 on the putter head upper surface 1d, the height is such that the putter head upper surface 1d becomes a smooth and continuous surface. Further, the screw hole 10 in FIG. 8 has a set screw shape. Similarly to the above, as another embodiment, a male screw stud may be used to fasten a nut.

A golf putter 100b in which a connecting mechanism between the putter shaft 4 and the putter head 1 according to the present invention is applied to a general putter head 16 as Embodiment 3 of the present invention will be described with reference to FIG. FIG. 9 is an overall view of the golf putter 100b according to the third embodiment of the present invention from the front, and generally shows the structure, the shape, and the relationship among the main components. A straight putter shaft 4 with a general grip 14 and a shaft plug 9 according to the present invention attached to each end and without a bend is mounted on the hosel 3 according to the present invention with a fitting part according to the present invention. A polygonal socket 8 and a polygonal plug 11 are connected, and the hosel 3 has a polygonal socket 8 and a polygonal plug 11 which are fitting parts having the same standard. It is connected to a general low center of gravity putter head 16 extending in the direction opposite to the launch direction. If the coupling axis vector of the putter shaft 4 and the hosel 3 is B, and the coupling axis vector of the hosel and the putter head is A, A and B are parallel. A plurality of polygonal sockets 8 are provided on the putter head 16, but the head hole filling plug 13b is inserted in a portion where the hosel is not coupled, so that the upper surface of the putter head becomes a smooth and continuous surface. It has a mechanism like this. Further, as described above, the upper surface of the relatively flat putter head 16 is formed so that the lie angle is formed by the angle between the insertion axis vector B of the polygon socket 8 on the putter head 16 and the golf putter ground contact surface. A polygonal socket 8 is provided with an inclination, and is structured such that screws can be fastened from the bottom surface of the putter head 16.
Further, it is possible to directly pierce the putter shaft 4 to which the shaft plug 9 is attached without using the hosel 3.

DESCRIPTION OF SYMBOLS 1 Putter head 1b Putter face 1c Sweet area plate insertion groove 1d Putter head upper surface 1e Putter head rear surface 2 Sweet area plate 2b Rear surface of sweet area plate 3 Hosel (Example with small offset)
3b hosel (example of large offset amount)
3c hosel neck (example with small offset)
3d hosel neck (example of large offset)
4 Putter shaft 5 Hosel fastening through hole 5b Putter shaft fastening through hole 6 Sweet area plate fastening through hole 7 Cavity structure 8 Polygon socket 9 Shaft plug 10 Female retaining screw hole 11 Polygon plug 12 Plug shaft side connection 13 Head hole filling plug 13b Head hole filling plug (Example 2)
14 Grip 15 Screw 16 Putter head (Example 2)
17 Putter face (Example 2)
100 Golf putter 100b Golf putter (Example 2)

Claims (9)

  A putter head 1, a hosel 3, a putter shaft 4 having no bend in structure, and a grip 14, each of which is a disassembled golf putter 100, wherein the putter head 1, the hosel 3 and the putter shaft 4 are screws The fastening portion between the hosel 3 and the putter head 1 has a polygonal cross section, and the fastening portion between the putter shaft 4 and the hosel 3 has a polygonal cross section, The golf putter 100 is characterized in that the putter head 1 is symmetrical.   2. The golf putter 100 according to claim 1, wherein the insertion axis of the polygonal plug 11 as the plug portion of the hosel 3 and the polygonal socket 8 as the socket portion are parallel.   3. The golf putter 100 according to claim 1, wherein the polygonal plug 11 of the hosel 3 and the polygonal sides of the polygonal socket 8 are parallel to each other.   The golf putter according to any one of claims 1 to 3, wherein the polygon socket 8 or the polygon plug 11 included in the hosel 3 and the putter head 1 have a fitting structure of the same standard. 100.   In the putter head 1, a sweet area existing in a part of a putter face 1b that is a striking surface of a golf ball is selected from a plurality of sweet area plates 2 that are replaceable plate members having different forms, and the putter The golf putter 100 according to any one of claims 1 to 4, wherein the sweet area plate having a concave structure provided in a part of the face 1b is fitted into the fitting groove 1e and fixed with screws.   The putter head 1 has a plurality of the polygon sockets 8 on the left and right symmetrical putter head upper surface 1d, and the line symmetry line ab of the putter face 1b and the line symmetry line of the putter head upper surface 1d. The angle formed by the surface S formed by two lines ad and the insertion axis vector A of the polygon socket 8 on the upper surface 1d of the putter head is 10 degrees or more. Golf putter 100.   In the putter head 1, the putter head back surface 1e, which is the surface opposite to the striking surface, is bilaterally symmetric, and has a concave cavity structure 7 having an opening and a maximum depth that is the same as or slightly larger than the size of the ball. The golf putter 100 according to any one of claims 1 to 6.   The plug shaft side connecting portion (12) is bonded to the general pipe-shaped putter shaft (4), and the polygonal plug (11) has a shaft plug (9) formed on the putter shaft (4). Golf putter 100 in any one of   On the putter head upper surface 1d, there is a head hole filling plug 13 which is a component in which the hole for inserting the putter shaft 4 or the hosel 3 is filled to form a continuous and smooth putter head upper surface 1d. The golf putter 100 according to claim 1, wherein:

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