Source: https://patents.google.com/patent/JP2009050676A/en
Timestamp: 2019-12-14 13:07:14
Document Index: 365043185

Matched Legal Cases: ['art 11', 'art 12', 'art 11', 'art 11', 'art 12', 'art 30', 'art 12', 'art 12', 'art 12', 'art 12', 'art 12', 'art 28', 'art 28', 'art 11', 'art 12', 'art 12', 'art 12', 'art 21', 'art 11', 'art 12', 'art 27', 'art 27', 'art 28', 'art 11', 'art 13', 'art 28', 'art 29']

JP2009050676A - Golf club - Google Patents
JP2009050676A
JP2009050676A JP2007276097A JP2007276097A JP2009050676A JP 2009050676 A JP2009050676 A JP 2009050676A JP 2007276097 A JP2007276097 A JP 2007276097A JP 2007276097 A JP2007276097 A JP 2007276097A JP 2009050676 A JP2009050676 A JP 2009050676A
JP2007276097A
JP4865674B2 (en
晴信 楠本
2007-07-31 Priority to JP2007200173 priority Critical
2007-07-31 Priority to JP2007200173 priority
2007-10-24 Application filed by Daiwa Seiko Inc, ダイワ精工株式会社 filed Critical Daiwa Seiko Inc
2007-10-24 Priority to JP2007276097A priority patent/JP4865674B2/en
2008-07-31 Priority claimed from US12/219,964 external-priority patent/US7931542B2/en
2009-03-12 Publication of JP2009050676A publication Critical patent/JP2009050676A/en
2012-02-01 Publication of JP4865674B2 publication Critical patent/JP4865674B2/en
Provided is a golf club in which a shaft and a head can be easily exchanged, has excellent durability, and can determine a positional relationship between a shaft and a head in a rotational direction with high accuracy.
A golf club according to the present invention includes a head 12 having a hosel portion 12g having a female screw 23 and a first receiving surface 30, and a male screw 24 and a first receiving surface 30 that are threadedly engaged with the female screw 23. When the head 11 having the neck portion 11a having the receiving surface 21a, the female screw 23 and the male screw 24 are screwed together and the head 12 and the shaft 11 are screwed together, the first receiving surface 30 and the second receiving surface 21a And a center axis of the insertion portion 28 in which the female screw 23 is formed, and a center axis of the shaft 11 when the head 12 and the shaft 11 are screwed to each other at a predetermined angle. It is characterized by having.
The present invention relates to a golf club, and more particularly to a golf club in which a head and a shaft can be exchanged.
There is a golf club disclosed in Patent Document 1 as a head that can be exchanged between a head and a shaft. The technique disclosed in Japanese Patent Laid-Open No. 2004-228561 prevents the dropout during swing and improves the balance of the head. Specifically, this golf club is provided with a shaft insertion hole having a non-circular cross-sectional shape in a hosel portion for fixing the shaft to the head body, and a retaining means for preventing the shaft from slipping out from the sole side. I have. Thereby, the position in the rotation direction of the head with respect to the shaft can be changed, and as a result, the lie angle and the loft angle can be changed.
JP 2005-270402 A
However, in the technique disclosed in Patent Document 1, if the lie angle or loft angle is repeatedly changed, a non-circular (for example, octagonal) peak portion is crushed, and looseness is generated or it is fixed by biting. There is a risk of problems. Further, when the naked structure is adopted, there is a problem that the positional relationship between the shaft and the head in the rotational direction is not accurately determined.
The present invention has been made in view of the above points, and golf that allows easy replacement of the shaft and the head, has excellent durability, and can determine the positional relationship in the rotation direction of the shaft and the head with high accuracy. The purpose is to provide clubs.
The golf club of the present invention includes a head having a hosel portion having a first screw portion and a first receiving surface, a second screw portion screwed into the first screw portion, and a second facing the first receiving surface. When the shaft having a neck portion having a receiving surface, the first screw portion and the second screw portion are screwed together and the head and the shaft are screwed together, the first receiving surface and the second receiving surface An adjustment body interposed between the first screw portion and the second screw portion, and a center axis of an insertion region in which a female screw is formed in the first screw portion or the second screw portion, and when the head and the shaft are screwed together The central axis of the shaft has a predetermined angle.
According to this configuration, by tightening in the rotational direction by screwing and positioning in the axial length direction by the first receiving surface and the second receiving surface, biting and wear can be prevented even after repeated use, and the durability is excellent. A golf club can be realized. Further, by interposing the adjusting body between the first receiving surface and the second receiving surface, the position of the head and the shaft in the rotational direction can be set in a desired direction, and the accuracy is maintained with repeated use. be able to. Furthermore, since the desired direction can be set by selecting the adjusting body, the shaft and head can be exchanged smoothly.
In the golf club of the present invention, the adjustment body includes a plurality of adjustment bodies each having a different thickness, and the attachment position in the rotation direction of the shaft relative to the head can be selected by exchanging the adjustment bodies. it can. According to this configuration, it is only necessary to prepare a set (required number) of adjusting bodies, and when changing the lie angle and loft angle, it is not necessary to prepare many clubs with different specifications. The handling is very convenient without taking any troubles.
In the golf club of the present invention, the adjusting body includes a reference adjusting body that sets a position in the rotation direction of the shaft with respect to the head, and an angle of the head with respect to the shaft proportionally increased from the position at a predetermined ratio. It is preferable to include a plurality of angle adjusting bodies for causing the adjustment. According to this configuration, the reference position and specifications can be correctly confirmed, and it becomes easy to recognize the matching relationship between the change in the lie angle or loft angle from the reference and the swing of the customer who made the trial.
In the golf club of the present invention, it is preferable that the adjusting body includes at least one member having a thickness larger than the pitch of the screw portion. According to this configuration, the adjustment body can be easily handled, and the head and shaft can be exchanged smoothly.
In the golf club of the present invention, the insertion length of the insertion portion with respect to the insertion hole is equal to that of the insertion hole in a state where the first screw portion of the hosel portion and the second screw portion of the neck portion are unscrewed. It is preferable that the diameter is set larger than the diameter of the opening. According to this configuration, when the shaft is turned downward, the head is turned up, and the head is rotated to release the screwing relationship, the insertion portion is in the relationship between the insertion portion and the insertion hole in which both screw portions are formed. Can exist in the insertion hole, so that the head can be maintained at the neck at the tip of the shaft. In such a configuration, the insertion portion may be on the shaft side or on the head side (if the insertion portion is on the shaft side, the insertion hole is on the head side, and the insertion portion is on the head side. The insertion hole is on the shaft side).
In the golf club of the present invention, it is preferable that an engagement portion to be engaged with a tool used when the shaft and the head are attached and detached is formed on the neck portion of the shaft. According to this configuration, it is possible to use a tool when attaching and detaching the head from the shaft, and the attachment and detachment operation can be performed reliably. Of course, this tool may be a general tool or a dedicated tool.
In the golf club of the present invention, when the head and the shaft are screwed together, the outer diameter of the insertion portion of the portion where the adjustment body interposed between the first receiving surface and the second receiving surface is located is It is preferable that it is formed larger than the outer diameter of the insertion part other than that part. According to this configuration, the adjustment body can be stably mounted, and the movement of the adjustment body can be regulated to prevent backlash and movement during use. Further, since the strength load on the thread portion can be reduced, it can be used for a long time.
In the golf club of the present invention, it is preferable that a vibration absorbing member that is softer than the hosel part and the neck part is interposed between the insertion hole and the insertion part in the hosel part and the neck part. According to this configuration, it is possible to prevent rattling and abnormal noise during use. Further, it is possible to change the feel at impact by changing the shape and type of the vibration absorbing member, and it is possible to provide more golf clubs.
In the golf club of the present invention, it is preferable that a space portion is formed in the hosel portion or the neck portion, and a weight adjusting member is exchangeably held in the space portion. According to this configuration, a composite test in which weight adjustment is added to the loft angle and the lie angle can be performed, and a wide variety of tests can be performed simultaneously. In particular, it is possible to correctly grasp the influence of the combined specification change on the player that could not be evaluated by the individual test.
In the golf club of the present invention, the shaft has a grip mounted on the side opposite to the side on which the head is mounted, and at least the outer shape of the region where the grip is gripped is formed in a circular cross section. It is characterized by that. In this configuration, when the shaft is rotated, the same gripping sensation can be obtained at any position, so that it is possible to appropriately evaluate.
According to the present invention, a head including a hosel portion having a first screw portion and a first receiving surface, a second screw portion screwed into the first screw portion, and a second receiver facing the first receiving surface. A first receiving surface and a second receiving surface when the shaft having a neck portion having a surface, the first screw portion and the second screw portion are screwed together and the head and the shaft are screwed together And an adjustment body interposed between the central axis of the insertion region in which the female screw is formed in the first screw portion or the second screw portion, and when the head and the shaft are screwed together Since the shaft has a predetermined angle with the central axis of the shaft, it is easy to replace the shaft and the head, has excellent durability, and can determine the positional relationship between the shaft and the head in the rotational direction with high accuracy. Can provide clubs
1A and 1B are views showing a golf club according to an embodiment of the present invention, in which FIG. 1A is a view with a face portion in front, and FIG. 1B is a view with a toe portion in front.
The golf club 1 shown in FIG. 1 has a head 12 set at a predetermined lie angle α and a predetermined loft angle β with respect to a reference horizontal plane at the tip of a shaft 11 made of metal or FRP. Configured. Here, the “loft angle” is a so-called “real loft”, and specifically, is a loft angle when a predetermined lie angle α is set and the face angle is 0 °. A neck portion 11a is provided at the tip of the shaft 11, and a head 12 is attached to the neck portion 11a. The neck portion 11a is formed integrally with the shaft 11 or separately. When the neck portion 11a is integrally formed, the neck portion 11a may be directly formed on the shaft 11, or the neck portion 11a may be integrally formed by insert molding at the time of forming the shaft. A grip 13 made of a flexible or soft material such as natural rubber or synthetic rubber is attached to the base end of the shaft 11. Moreover, in the shaft 11, the socket 11b for filling the level | step difference of the shaft 11 and the neck part 11a is integrally formed.
The grip 13 is formed so that the outer shape of at least the region actually gripped by the golfer (the region indicated by the symbol R in FIG. 1A and the region of 20 mm to 180 mm from the grip end) has a circular cross section. It is preferable. Specifically, when the shaft 11 is rotated, it is preferable that the wall thickness and the outer shape be the same perfect circle so that the same gripping feeling can be obtained at any position of 360 ° (however, In this case, the perfect circle need only be accurate to the extent that a grip state in which a sense of incongruity is unlikely to occur when grasped is generally called “no back line”. Moreover, it is preferable to make the hardness uniform in the circumferential direction. With this configuration, when the shaft 11 is rotated, the same gripping feeling can be obtained at any position. In addition, since it is a part which does not grip about the former edge part and front-end | tip part (part other than the area | region shown by R) of a grip, arbitrary shapes may be sufficient.
In the head 12, with the head 12 attached to the ground as shown in FIG. 1A, the toe portion 12 a is located at a position relatively away from the shaft 11, and the heel portion 12 b is located at a position near the shaft 11. The crown portion 12c is located on the top surface, and the sole portion 12d is located on the bottom surface. Further, as shown in FIG. 1B, the head 12 is provided with a face portion 12e for hitting a ball. Further, a back portion 12f is located on the opposite side to the face portion 12e.
In the head 12, other than the face material fixed to the face portion 12e, for example, titanium alloy (Ti-6Al-4V, Ti-15V-3Cr-3Sn-3Al), iron-based alloy (17-4ph, SUS304) Alternatively, it is preferably formed integrally by casting Custum450 (manufactured by Carpenter) or the like, and an opening is formed on the front side of the face material constituting the hitting surface of the face portion 12e. The head 12 may be formed by forming each member constituting it individually and fixing them by welding, bonding or the like. Examples of the face material fixed to the face portion 12e include titanium alloys (Ti-15V-3Cr-3Sn-3Al, Ti-6Al-4V, SP700, Ti-15V-6Cr-4Al, Ti-15Mo-5Zr- 3Al), iron-based alloy (Custum455,465 (Carpenter), 18Ni-12Co-4.5Mo-1.5Ti-Fe), or Ti-30Nb-10Ta-5Zr, etc. It is preferable to integrally form by pressing (may be further milled), and the face material thus formed fits into the opening formed in the face portion 12e, and is bonded, welded, or soldered. It is fixed by attaching. The face portion 12e may be integrally formed with the head 12 instead of fitting a face material as a separate member, and the entire face portion 12e is made of a face material different from the head 12. May be.
FIG. 2 is an enlarged view showing the head of the golf club shown in FIG. The head 12 is provided with a hosel portion 12g to which the shaft 11 is directly or indirectly attached. The neck portion 11a of the shaft 11 is attached to the hosel portion 12g by screwing via the adjusting body 14. In FIG. 2, reference numeral 11 b indicates a socket, and reference numeral 11 c indicates a central axis of the shaft 11. Reference symbol C indicates the face center, which is the center of the face surface height and the center of the face width. The face center is a measurement point when measuring the “loft angle” and “face angle”.
FIG. 3 is an enlarged view showing a neck portion of the head of the golf club shown in FIG. The neck 11 a of the shaft 11 is configured by covering the tip of the shaft 11 with the neck 11 a. The neck portion 11a has a large-diameter portion 21 that decreases in diameter from the distal end side toward the proximal end side. A flange surface 21a is provided at the end of the large-diameter portion 21 on the distal end side, and the flange surface 21a constitutes a first receiving surface of the hosel portion 12g or a second receiving surface that comes into contact with the adjusting body 14. Yes. The adjusting body 14 is disposed at the position of the flange surface 21a. Further, a male screw 24 that is screwed with the hosel part 12g is formed at the tip of the neck part 11a.
On the other hand, an insertion hole 22 for inserting the neck portion 11 a of the shaft 11 is formed in the hosel portion 12 g of the head 12. The insertion hole 22 has a size sufficient for the neck portion 11a of the shaft 11 to be inserted and screwed together. On the inner peripheral surface of the insertion hole 22, a female screw 23 that is screwed with the male screw 24 of the neck portion 11 a is formed.
When the shaft 11 and the head 12 having such a configuration are coupled, the neck portion 11a of the shaft 11 is inserted into the insertion hole 22 of the head 12, and the shaft 11 is rotated. As a result, the neck portion 11 a of the shaft 11 is screwed to the hosel portion 12 g of the head 12 by being screwed into the male screw 24 of the neck portion 11 a and the female screw 23 of the insertion portion 22. Thus, in a state where the shaft 11 is attached to the head 12, the central axis 26 of the insertion hole 22 in which the female screw 23 is formed and the central axis 11c of the shaft 11 have a predetermined angle θ. This angle θ is preferably 0.5 to 5 degrees in consideration of the change range of the lie angle and the loft angle. However, the angle θ is not limited to this range and can be appropriately set to a value outside this range. Further, a space 25 is provided between the most distal end portion of the neck portion 11 a and the bottom surface of the insertion hole 22. The space 25 is set so that the most distal end portion of the neck portion 11a and the bottom surface of the insertion hole 22 do not contact each other even if the adjusting body 14 is not interposed between the hosel portion 12g and the neck portion 11a. Regarding the screw directions of the male screw 24 and the female screw 23, it is preferable to use a “reverse screw” for a right-handed golf club and a “normal screw” for a left-handed golf club. By doing so, the loft angle and the lie angle are stabilized by being firmly tightened by the hit ball.
FIG. 4 is an exploded view for explaining a coupling state between the hosel part and the neck part. More specifically, the neck portion 11 a is provided with an extended portion 27 into which the shaft 11 is inserted, a large-diameter portion 21 provided on the distal end side of the extended portion 27, and connected to the distal end side of the large-diameter portion 21. The insertion portion 28 to be inserted into the insertion hole 22 of the hosel portion 12g and a male screw 24 formed at the tip of the insertion portion 28 are mainly configured. The flange surface 21a formed on the large-diameter portion 21 is a receiving surface that comes into contact with the first receiving surface 30 of the adjusting body 14 or the hosel portion 12g. Further, a shaft fitting hole 29 is provided in the neck portion 11a.
The hosel portion 12g is formed in the insertion hole 22 for inserting the insertion portion 28 of the neck portion 11a, the female screw 23 formed on the inner peripheral surface of the insertion hole 22 and screwed with the male screw 24 of the neck portion 11a, and the adjusting body 14 or the neck. It is mainly comprised from the 1st receiving surface 30 contact | abutted with the 2nd receiving surface 21a of the part 11a. Further, the bottom surface of the insertion hole 22 of the hosel part 12g is provided with a connecting part 30d extending to the heel part 12b side. By providing the connecting portion 30d, the strength of the hosel portion 12g can be improved. The connecting portion 30d may be provided on the sole portion. Further, the connecting portion 30d may not be provided.
In the present embodiment, the insertion hole 22 means a shaft mounting hole provided in the hosel part 12g. Therefore, in the hosel part 12g, the position of the top part (first receiving surface 30) of the insertion hole 22 may be higher than the crown part 12c, but by lowering the crown part 12c, the golfer holds the position. It becomes possible to make the shape beautiful (easy to hold and not strange).
The second receiving surface 21 a of the neck portion 11 a and the first receiving surface 30 of the hosel portion 12 g can be surfaced via the adjusting body 14. In addition, since the width and outer diameter of the receiving surface can be arbitrarily set independently of the threaded portion, deformation wear due to repeated use can be suppressed, and it is possible to prevent biting and detachment.
Further, in this configuration, since the insertion portion 28 of the neck portion 11a is inserted into the insertion hole 22 of the hosel portion 12g, it is possible to prevent rattling when the shaft 11 is attached to the head 12. In contrast, the shaft 11 can be attached with high accuracy. Moreover, in the insertion part 28, it is preferable to form a convex part partially on the outer periphery because the adjustment body 14 can be held on the outer periphery of the insertion part 28 when the adjustment body 14 is interposed.
Moreover, it is preferable that the front end side of the male screw 24 formed in the insertion portion 28 is relatively thick. Thereby, fatigue failure due to repeated application of torsional stress and tensile stress can be prevented. The male screw 24 is preferably formed on the distal end side of the insertion portion 28. Thereby, it becomes possible to attach the shaft 11 to the head 12 more accurately by lengthening the insertion portion 28. In the case where the male screw 24 is provided on the proximal end side of the insertion portion 28, it is preferable that the length of the insertion portion 28 is made longer than the length of the male screw 24.
As shown in FIG. 4, the insertion hole 22 formed in the hosel portion 12g and the neck portion 11a inserted therein are screwed with the female screw 23 of the hosel portion 12g and the male screw 24 of the neck portion 11a. The insertion length L of the neck portion 11a at the tip of the shaft with respect to the insertion hole 22 of the hosel portion (insertion length of the portion where the male screw 24 is not formed) L is the diameter D of the opening portion of the insertion hole 22. It is preferable that it is set larger.
With this configuration, when the head 12 is removed from the shaft 11, the insertion length L is reduced even if the screw 11 is released by rotating the head with the shaft 11 facing downward and the head 12 facing upward. Since it is longer than the diameter D of the insertion hole 22, the insertion part can exist in the insertion hole 22, and the head 12 can be maintained in the neck part 11a at the tip of the shaft. As a result, it is possible to prevent the head from being accidentally dropped and damaged or damaged. In this case, in the relationship between L and D described above, by setting L> 1.2D, preferably L> 1.5D, it is possible to effectively prevent the head from dropping.
When the male thread 24 is formed in the neck portion 11a, it is preferable to perform threading under the same conditions, with the second receiving surface 21a as a reference. Moreover, when forming the internal thread 23 in the hosel part 12g, it is preferable to perform a screw process on the 1st receiving surface 30 on the same conditions altogether. In addition, about the screw part of the hosel part 12g, you may align and attach the screw part containing the female screw or hosel part formed separately, and the hosel part 12g by adhesion | attachment, welding, etc. FIG.
As shown in FIG. 4, the neck portion 11 a is provided with a shaft fitting hole 29 inside. The shaft fitting hole 29 has a sufficient size for fitting the shaft 11. Further, the shaft fitting hole 29 is formed so that the central axis thereof has a predetermined angle θ with respect to the central axis of the insertion portion 28. That is, since the shaft 11 is fitted along the shaft fitting hole 29 and the insertion portion 28 is screwed into the insertion hole 22, the center axis of the insertion hole 22 in which the female screw 23 is formed, the head 12 and the shaft 11 are connected. The central axis of the shaft 11 when screwed has a predetermined angle θ. In the present specification, the region of the insertion hole and / or the internal thread is referred to as an insertion region.
When the shaft fitting hole 29 is formed so that the central axis thereof has a predetermined angle θ with respect to the central axis of the insertion portion 28, for example, as shown in FIG. 4, the proximal end side surface 21 b of the large diameter portion 21 is formed. The orthogonal axis is set at a predetermined angle with respect to the central axis of the insertion portion 28. As a result, when the insertion portion 28 is inserted into the insertion hole 22 of the hosel portion 12g, the central axis of the insertion portion 28 and the central axis of the insertion hole 22 coincide, and the shaft 11 is fitted into the shaft fitting hole 29. In doing so, the central axis of the shaft 11 and the central axis of the insertion portion 28 have a predetermined angle θ. In the present embodiment, the insertion portion 28 has the hosel portion 12g by making the axis perpendicular to the proximal side surface 21b of the large diameter portion 21 have a predetermined angle with respect to the central axis of the insertion portion 28. When the shaft 11 is inserted into the insertion hole 22, the center axis of the insertion portion 28 matches the center axis of the insertion hole 22, and when the shaft 11 is fitted into the shaft fitting hole 29, the center axis of the shaft 11 However, in the present invention, any part or member of the neck portion 11a and / or the hosel portion 12g is used. When the insertion portion 28 is inserted into the insertion hole 22 of the hosel portion 12g, the center axis of the insertion portion 28 matches the center axis of the insertion hole 22, and the shaft 11 is inserted into the shaft fitting hole 29. When , The center axis of the shaft 11 and the center axis of the insertion portion 28 may be configured to have a predetermined angle.
When the shaft 11 is attached to the neck portion 11a, for example, the distal end of the shaft 11 is fitted into a shaft fitting hole formed on the proximal end side of the extended portion 27 and fixed by adhesion or the like. Note that the outer extension 27 may be configured to be solid, and the extension 27 may be fitted and fixed in the hollow portion of the shaft 11.
When the neck portion 11a having the above structure is screwed to the hosel portion 12g, the center axis of the shaft 11 is inserted into the insertion portion 28 in a use state in which the second receiving surface 21a of the neck portion 11a is in contact with the first receiving surface 30 of the hosel portion 12g. It has a predetermined angle θ with respect to the central axis. In this way, by providing an angle to the central axis, the position between the shaft 11 and the rotation direction of the head 12 can be set with high accuracy by exchanging the adjusting body, which will be described later. Adjustments can be made. As a result, it is possible to make a test shot while changing the lie angle and loft angle without preparing many types of heads, and to provide a golf club having a desired lie angle or loft angle based on the test hit result to the customer Is possible.
As the material constituting the neck portion 11a, in consideration of low specific gravity, strength, and wear resistance, titanium alloys such as pure titanium, Ti-15V-3Cr-3Sn-3Al, and aluminum alloys such as 6061 and 7075 are particularly preferable. An iron alloy or a high-strength resin may be used. Moreover, when using an aluminum alloy, it is preferable to carry out an alumite treatment in order to prevent electrical contact. Further, when the neck portion 11a is screwed to the hosel portion 12g or is loosened and removed, it is preferable that the outer surface of the extended portion 27 of the neck portion 11a is easily grasped. Specifically, as in an embodiment shown in FIG. 12, which will be described later, it is preferable to form an engaging portion with which a tool used when attaching and detaching the shaft and the head is engaged. Such an engaging part can be constituted by, for example, a flat part, a hole, a rib, an unevenness, etc. to which a tool is applied, and in particular, a hexagonal surface part is formed to facilitate gripping with a general spanner. From the viewpoint of appearance and strength, it is preferable. Furthermore, it is preferable to form a polygonal surface portion such as a hexagonal surface portion, and to mark the one surface of the polygonal surface portion so that the inclination direction of the shaft can be identified.
Next, the adjustment body 14 will be described. FIG. 5 is a cross-sectional view showing a golf club adjuster according to an embodiment of the present invention. The adjusting body 14 has a substantially ring shape and is attached to the insertion portion 28 of the neck portion 11a. The adjusting body 14 has a pair of A and B surfaces facing each other, and the A and B surfaces are substantially parallel to each other. The adjusting body 14 includes an outer surface 14a, an inner surface 14b into which the insertion portion 28 is inserted, and guide surfaces 14c provided on the A and B surface sides of the inner surface 14b.
It is preferable that the outer surface 14a of the adjustment body 14 has a shape in which the center bulges in the thickness direction. Thereby, operation which attaches / detaches the adjustment body 14 becomes easy. Moreover, the guide surface 14c is provided so that the insertion portion 28 can easily enter when the insertion portion 28 of the neck portion 11a is inserted. In consideration of such a function, the guide surface 14c is preferably an inclined surface or a curved surface.
In FIG. 5, D 1 indicates the inner diameter, D 2 indicates the outer diameter, and t indicates the thickness. The inner diameter D 1 is freely inserted portion 28 of the neck portion 11a is detachable, and it is preferable to set the looseness is reduced. Further, the thickness t is preferably a thickness that is easy to handle, for example, 0.1 mm to 10 mm, preferably 0.3 mm to 5 mm. The tolerance of the thickness t is preferably ± 0.005 (± 0.003) or less.
The material constituting the adjustment body 14 is preferably a material harder than the material constituting the head 12 in consideration of wear resistance. For this reason, a material harder than the material forming the head 12 may be processed, or after processing with a specific material, heat treatment may be performed to make the material harder than the material forming the head 12. Specifically, titanium alloys such as pure titanium, Ti-6Al-4V, Ti-15V-3Cr-3Sn-3Al, or iron-based alloys are preferable. Further, a resin with high wear resistance may be used, and in that case, electric contact can be prevented.
Next, a method for using the adjusting body in the golf club of the present invention will be described.
FIG. 6 is a view for explaining the angle adjustment of the adjusting body in the golf club according to the embodiment of the present invention. In the golf club shown in FIG. 6, as described above, the center axis of the insertion portion 28 and the center axis of the insertion hole 22 coincide, and the center axis of the shaft 11 and the center axis of the insertion portion 28 form a predetermined angle. Therefore, when the shaft 11 is rotated, the central axis of the shaft 11 rotates in the direction of the arrow in FIG. By utilizing this principle, the relationship between the head 12 and the shaft 11 can be set in the shaft direction at an arbitrary angle of 360 degrees (one rotation) by rotating the neck portion 11a. That is, by such rotation, the lie angle and the loft angle can be arbitrarily set in the golf club. In this case, the position in the rotation direction (rotation angle) can be adjusted by the thickness of the adjustment body 14.
FIG. 7 is a diagram for explaining the relationship between the adjusting body (thickness) and the rotation angle. In FIG. 7, directions “1” to “8” indicate directions on the grip side of the shaft 11 with respect to the central axis 26 of the insertion hole 22 of the head 12. Here, a case will be described in which eight adjustment bodies having different thicknesses are used, and the adjustment positions of the shaft 11 with respect to the head 12 are selected by exchanging these adjustment bodies. The number of the adjusting bodies 14 is not particularly limited, and the mounting position in the rotation direction of the shaft 11 with respect to the head 12 may be selected with a number other than eight. For example, as shown in FIG. 7, when one rotation (360 degrees) is divided into eight equal parts, adjustment is made by setting the dimensions obtained by dividing one pitch of the screw into eight equal parts to the respective thicknesses of the adjusting bodies 14. Is possible. That is, as shown in Table 1 below, a dimension obtained by dividing one pitch of the screw into 8 parts for each rotation angle is set to each thickness of the adjusting body 14. Various lie angles and loft angles can be realized by interposing adjustment bodies having different thicknesses between the neck portion 11a and the hosel portion 12g. It can be realized only by replacement. In other words, it is only necessary to prepare a set (required number) of adjusting bodies 14, and it is not necessary to prepare many clubs with different specifications when changing the lie angle and loft angle, so it takes up space and transports. The handling becomes very convenient without any trouble. In practice, the face angle also changes in conjunction with the loft angle. For this reason, it is possible to make adjustments with an emphasis on the face angle.
An example of the set of the adjusting body 14 as described above is shown in FIG. FIG. 8A shows an additional adjustment body set. In this adjustment body set, the angle adjustment body 32 is stacked on the reference adjustment body 31 to adjust the thickness. That is, the adjustment body set includes a reference adjustment body 31 that sets a position in the rotation direction of the shaft 11 with respect to the head 12 and a plurality of adjustments for increasing and decreasing the angle of the head 12 with respect to the shaft 11 proportionally from the position. Angle adjustment body 32. By using such an adjustment body set, it is possible to correctly confirm the reference position and specifications, and it becomes easy to recognize the matching relationship between the change of the lie angle and loft angle from the reference and the swing of the customer who made the trial. .
In this case, the reference adjusting body 31 may have a thickness larger than the pitch of the threaded portion. Moreover, two or more things having thickness larger than the pitch of a thread part may be contained. As a result, the adjustment body can be easily handled, and the head and shaft can be exchanged smoothly.
As for the adjustment body set, FIG. 8B shows a separate adjustment body set, and this adjustment body set has the thickness of the reference adjustment body + angle adjustment body shown in FIG. 8A. May be formed integrally and prepared as separate bodies 33a to 33h for each thickness. Further, FIG. 8C illustrates a position where the adjustment body is not provided at only one point, and the adjustment body set is configured in the manner shown in FIG. 8A or FIG. good. Furthermore, since it is preferable for customer service to make the adjustment body easy to identify in appearance, it is preferable to carry out “color coding”, “mark the appearance surface”, and the like.
Further, it is preferable to attach an identification design, that is, a mark, a mark, a character, or the like that can identify the direction of the angle between the central axis of the insertion region and the central axis of the shaft to an appropriate position of the shaft 11 or the head 12. By attaching the identification design in this way, it is possible to make the player understand the direction of the angle, and thus the setting conditions of the loft angle and the lie angle. The position of the identification design is preferably a position that can be seen when the head toe direction is viewed from the front so that the player can grasp the gripped position. Specifically, as shown in FIGS. 1 and 2, for example, the front part P1, the front part P2 in front of the grip, the front part P3 of the large diameter part 21 of the neck part 11a, or the front part of the hosel part 12g. It can be attached to P4 or the like. Or you may attach | subject an identification design to the position which shows the direction of the maximum or minimum inclination angle.
Note that, as described above, the grip 13 has a shaft shape because the outer shape of at least the region actually gripped by the golfer (the region indicated by symbol R in FIG. 1A) is formed in a circular cross section. When 11 is rotated, the same gripping feeling (a gripping feeling that does not cause a sense of incongruity regardless of the position) is obtained at any position of 360 °. For this reason, the player can perform more appropriate evaluation.
As described above, in the golf club according to the present embodiment, the tightening in the rotational direction by screwing and the positioning in the axial direction by the first receiving surface and the second receiving surface can be used even if used repeatedly. Wear can be prevented and a golf club with excellent durability can be realized. Further, by interposing the adjusting body 14 between the first receiving surface and the second receiving surface, the position of the head 12 and the rotation direction of the shaft 11 can be set in a desired direction, and withstand repeated use and accuracy. Can be maintained. Furthermore, since it can set to a desired direction by selection of the adjustment body 14, the exchange operation | work of the shaft 11 and the head 12 can be performed smoothly.
The present invention is not limited to the embodiment described above, and can be implemented with various modifications. For example, with respect to the coupling configuration between the hosel part and the neck part, the central axis of the insertion region where the female thread is formed in the threaded part and the central axis of the shaft when the head and the shaft are screwed are at a predetermined angle. It only has to be set to have.
For example, as shown in FIG. 9, an insertion hole 41 is formed in the neck portion 11a, a female screw 23 is formed on the inner peripheral surface of the insertion hole 41, a protruding portion 42 is provided on the hosel portion 12g, and a male screw 24 is provided on the outer peripheral surface thereof. May be formed, and may be configured to be screwed between the neck portion 11a and the hosel portion 12g.
Alternatively, as shown in FIG. 10, the insertion hole 41 is formed in the insertion portion 28 of the neck portion 11a, the female screw 23 is formed on the inner peripheral surface of the insertion hole 41, and the insertion portion 28 can be inserted into the hosel portion 12g. An insertion hole 22 of a size is formed, a protruding portion 42 is provided in the insertion hole 22, a male screw 24 is formed on the outer peripheral surface thereof, and the neck portion 11a is inserted into the insertion hole 22 of the hosel portion 12g, It may be configured to be screwed between the neck portion 11a and the hosel portion 12g.
Of course, also in the configuration shown in FIG. 10, the insertion length of the neck portion at the tip of the shaft (the screws 23 and 24 are formed in a state where the screwing relationship between the screw portions 23 and 24 is removed as in the above-described embodiment. It is preferable that the insertion length (L) of the portion not formed is set to be larger than the diameter D of the opening in the insertion hole 22. In the configuration shown in FIG. 9, the male screw 24 is formed at the base end of the protruding portion (inserting portion) 42, and the length of the protruding portion where the male screw is not formed is set larger than the diameter of the opening of the insertion hole 41. You should do it.
If comprised in this way, when removing the head 12 from the shaft 11, it can prevent that a head falls accidentally and can prevent a head from being damaged or damaged.
FIG. 11 is a diagram showing another embodiment of the adjusting body arranging method described above. As shown in this embodiment, the adjusting body 14A is formed in a disc shape, and is exchangeably disposed between the tip of the shaft neck portion 11a and the bottom portion 22A of the insertion hole 22 formed in the hosel portion 12g of the head. It is set up. In this case, an accommodation portion 11A to which the adjusting body 14A can be attached and detached may be formed at the tip of the neck portion 11a. The inner surface 22A 'of the bottom portion 22A and the inner surface 11A' of the accommodation portion 11A are formed by the female screw 23 and the male screw 24. When screwed together, a receiving surface to which the adjusting body 14A abuts is configured. As described above, the installation position of the adjustment body can be appropriately changed between the neck portion and the hosel portion.
FIG. 12 is a diagram showing another embodiment of the neck portion and the hosel portion. In this embodiment, an engagement portion 27A that engages a tool used when the shaft and the head are attached and detached is formed in the neck portion 11a of the shaft, specifically, the outer peripheral region of the extension portion 27. The engaging portion 27A is configured as a hexagonal surface portion so that it can be gripped and rotated by a general spanner. With such a configuration, when the head is detached from the shaft, the above tool is used. The attachment / detachment operation can be performed easily and reliably. Further, it is possible to prevent a large torsional load from acting on the shaft body, and to make a golf club excellent in strength and durability. Furthermore, using a torque wrench or the like as a tool makes it possible to make the tightening torque constant or to easily adjust the relative positional relationship between the shaft and the head in the rotational direction, thereby improving the accuracy of the set state. It becomes.
In addition, about the above-mentioned engaging part 27A, two opposing surfaces may be formed besides a hexagonal surface part, or a square surface part may be sufficient. Or the structure which formed many uneven | corrugated | grooved parts and ribs in the outer peripheral surface of the extension part 27 may be sufficient so that attachment / detachment operation may become easier. In addition, the engaging portion 27A is preferably formed in a region close to the screwing portion, so that a load during attachment / detachment can be prevented from being applied to the shaft body. Moreover, about the engaging part, the structure provided in the hosel side may be sufficient.
Further, in the embodiment shown in FIG. 12, when the head 12 and the shaft 11 are screwed together, the insertion of the portion P5 where the adjusting body 14 interposed between the first receiving surface 30 and the second receiving surface 21a is located. The outer diameter of the portion is formed larger than the outer diameter of the insertion portion other than that portion (the outer diameter of the portion where the male screw 24 is formed). According to such a configuration, the adjustment body 14 can be easily attached and detached from the screw portion, can be stably attached, and the backlash can be reduced with the adjustment body 14 set. In addition, the adjustment body can be used for a long period of time, and an accurate comparative test can be easily performed.
In the embodiment shown in FIG. 12, the male screw 24 is formed on the proximal end side of the insertion portion 28 of the neck portion 11 a and the female screw 23 is formed on the opening side of the insertion hole 22. With such a configuration, the thickness of the male screw 24 portion of the insertion portion 28 of the neck portion 11a can be reduced because the inner side is reinforced with the shaft. Accordingly, it is possible to reduce the weight of the neck portion 11a, and the degree of freedom in head design is improved. Also in such a configuration, it is preferable that the length L of the insertion portion 28 of the neck portion 11 a where the male screw 24 is not formed is larger than the diameter D of the opening of the insertion hole 22. By configuring in this way, it is possible to prevent the head from inadvertently dropping when the head 12 is attached and detached, as in the above-described embodiment.
Of course, in the relationship between L and D, similarly to the above-described embodiment, by setting L> 1.2D, preferably L> 1.5D, the head can be effectively prevented from falling. .
FIGS. 13A and 13B are views showing still another embodiment of the neck portion. In this embodiment, a vibration absorbing member that is softer than the hosel part and the neck part is interposed between the insertion hole 22 and the insertion part 28 in the hosel part and the neck part. Specifically, in the configuration shown in (a), a circumferential groove is formed on the distal end side of the insertion portion 28 of the neck portion 11a, and a ring made of a soft synthetic resin such as rubber or elastomer resin is used here. The vibration absorbing member 60 is fitted so that the insertion portion 28 can be inserted and removed freely. Further, in the configuration shown in (b), a space portion 28A is formed at the tip of the insertion portion 28, and a columnar vibration absorbing member 60A having a fitting portion 60a is press-fitted or screwed into the insertion portion 28. Is fixed so that it can be inserted and removed freely.
According to such a configuration, the vibration absorbing member 60, 60A can be interposed between the insertion portion while being in contact with the inner surface of the insertion hole 22 during use of the golf club. And noise can be prevented.
Note that the vibration absorbing member having the above-described configuration may be improved in vibration-proofing properties by mixing a metal into a soft synthetic resin, or may be fixed to the insertion portion by adhesion or the like. Further, the arrangement method may be set along the axial direction, and may be modified as appropriate, such as being set on the hosel side (head insertion hole side). Further, it is possible to change the feel at impact by changing the shape and type of the vibration absorbing member, and it is possible to provide more golf clubs.
FIG. 14 is a view showing still another embodiment of the neck portion. In this embodiment, a space portion 28A is formed at the distal end of the shaft neck portion 11a (the distal end of the insertion portion 28), and the weight adjusting member 62 is held in the space portion 28A in a replaceable manner. The weight adjusting member 62 can be held in the space 28A by press-fitting, screwing or the like, and is made of rubber, elastomer resin, or other soft resin such as tungsten, lead, copper, stainless steel so that it can be easily attached and detached. It can be formed by mixing or wrapping a high specific gravity material (specific gravity of 5.0 or more) such as metal or ceramic. Or you may use the above-mentioned high specific gravity material of a metal or ceramics.
According to this configuration, a composite test in which the adjustment of the weight adjusting member 62 is added to the loft angle and the lie angle can be performed, and a wide variety of tests can be performed simultaneously. In particular, it is possible to correctly grasp the influence of the combined specification change on the player that could not be evaluated by the individual test.
The space for accommodating the weight adjusting member 62 described above may be formed in the insertion hole 22 of the head instead of the neck portion 11a.
While the embodiments of the present invention have been described above, the present invention can be modified as appropriate without departing from the scope of the object other than the above-described embodiments. For example, the features shown in FIGS. 11 to 14 may be applied to the configurations shown in FIGS.
It is a figure which shows the golf club which concerns on embodiment of this invention, (a) is the figure which made the face part the front, (b) is the figure which made the toe part the front. It is an enlarged view which shows the head of the golf club shown in FIG. It is an enlarged view which shows the neck part of the head of the golf club shown in FIG. It is an exploded view for demonstrating the joint state between a hosel part and a neck part. It is sectional drawing which shows the adjustment body of the golf club which concerns on embodiment of this invention. It is a figure for demonstrating the angle adjustment of the adjustment body in the golf club which concerns on embodiment of this invention. It is a figure for demonstrating the relationship between an adjustment body (thickness) and a rotation angle. (A)-(c) is a figure which shows the example of an adjustment body set. It is an exploded view for demonstrating the other example of the coupling | bonding structure between a hosel part and a neck part. It is an exploded view for demonstrating the other example of the coupling | bonding structure between a hosel part and a neck part. It is a figure which shows another embodiment of the arrangement | positioning method of an adjustment body. It is a figure which shows another embodiment of a neck part and a hosel part. (A) And (b) is a figure which shows another embodiment of a neck part. It is a figure which shows another embodiment of a neck part.
DESCRIPTION OF SYMBOLS 1 Golf club 11 Shaft 11a Neck part 11c, 26 Center axis 12 Head 12g Hosel part 13 Grip 14, 14A Adjustment body 21a 2nd receiving surface 22 Insertion hole 23 Female screw 24 Male screw 27A Engagement part 28 Insertion part 29 Shaft fitting hole 30 First receiving surface 31 Reference adjusting body 32 Angle adjusting body 60 Vibration absorbing member 62 Weight adjusting member
A head having a hosel portion having a first screw portion and a first receiving surface; a second screw portion screwed with the first screw portion; and a neck portion having a second receiving surface facing the first receiving surface. When the head and the shaft are screwed together by screwing the shaft provided with the first screw portion and the second screw portion, the shaft is interposed between the first receiving surface and the second receiving surface. A central axis of an insertion region in which a female screw is formed in the first screw portion or the second screw portion, and a central axis of the shaft when the head and the shaft are screwed together Has a predetermined angle.
2. The adjustment body includes a plurality of adjustment bodies each having a different thickness, and an exchange position of the shaft relative to the head can be selected by exchanging the adjustment body. The listed golf club.
The adjusting body includes a reference adjusting body that sets a position in the rotation direction of the shaft with respect to the head, and a plurality of angle adjusting bodies for increasing and decreasing the angle of the head with respect to the shaft in proportion to the position from the position. The golf club according to claim 1 or 2, characterized by comprising:
4. The golf club according to claim 1, wherein the adjustment body includes at least one member having a thickness larger than a pitch of the screw portion. 5.
The insertion length of the insertion portion with respect to the insertion hole is set to be larger than the diameter of the opening portion of the insertion hole in a state where the first screw portion of the hosel portion and the second screw portion of the neck portion are unscrewed. The golf club according to claim 1, wherein the golf club is provided.
6. The golf club according to claim 1, wherein an engagement portion that engages with a tool used when the shaft and the head are attached and detached is formed on a neck portion of the shaft.
When the head and the shaft are screwed together, the outer diameter of the insertion portion of the portion where the adjusting body interposed between the first receiving surface and the second receiving surface is located is outside the insertion portion other than that portion. The golf club according to claim 1, wherein the golf club is formed to be larger than a diameter.
8. The vibration absorbing member that is softer than the hosel part and the neck part is interposed between the insertion hole and the insertion part in the hosel part and the neck part. The golf club described in 1.
9. The golf club according to claim 1, wherein a space portion is formed in the hosel portion or the neck portion, and a weight adjustment member is exchangeably held in the space portion.
2. The shaft according to claim 1, wherein a grip is mounted on a side opposite to a side on which the head is mounted, and an outer shape of at least a region where the grip is gripped is formed in a circular cross section. The golf club according to any one of 1 to 9.
JP2007276097A 2007-07-31 2007-10-24 Golf club Active JP4865674B2 (en)
JP2007200173 2007-07-31
JP2007276097A JP4865674B2 (en) 2007-07-31 2007-10-24 Golf club
US12/219,964 US7931542B2 (en) 2007-07-31 2008-07-31 Golf club
JP2009050676A true JP2009050676A (en) 2009-03-12
JP4865674B2 JP4865674B2 (en) 2012-02-01
ID=40502282
JP2007276097A Active JP4865674B2 (en) 2007-07-31 2007-10-24 Golf club
JP (1) JP4865674B2 (en)
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JP4865674B2 (en) 2012-02-01
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KR20120052318A (en) 2012-05-23 Releasable and interchangeable connections for golf club heads and shafts with multiple orientations
JP2009545393A (en) 2009-12-24 Golf head with compatible head-shaft connection structure
2011-10-21 A01 Written decision to grant a patent or to grant a registration (utility model)
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