CN111686427A - Golf club head and golf club - Google Patents

Golf club head and golf club Download PDF

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Publication number
CN111686427A
CN111686427A CN202010165013.XA CN202010165013A CN111686427A CN 111686427 A CN111686427 A CN 111686427A CN 202010165013 A CN202010165013 A CN 202010165013A CN 111686427 A CN111686427 A CN 111686427A
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CN
China
Prior art keywords
golf club
club head
face
specific gravity
gravity
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010165013.XA
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Chinese (zh)
Inventor
山田理欧
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Yamaha Corp
Original Assignee
Yamaha Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yamaha Corp filed Critical Yamaha Corp
Publication of CN111686427A publication Critical patent/CN111686427A/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/32—Golf

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Abstract

Provided are a fairway wood type golf club head and a golf club, which can realize low center of gravity and improve durability. The golf club head has a fairway wood-type head body having a face portion, a crown portion, and a sole portion. The sole portion has a recess on a surface thereof, and a low specific gravity material having a lower specific gravity than the head body is provided on a bottom surface of the recess.

Description

Golf club head and golf club
Technical Field
The present invention relates to a fairway wood type golf club head and a golf club.
Background
As a conventional wood-type golf club, patent document 1 below discloses a golf club head in which openings are provided in the crown portion and the sole portion of the head, respectively, the opening of the crown portion is covered with a metal cover member made of a heavy metal having a lower specific gravity than the head body, the opening of the sole portion is covered with a resin cover member made of a fiber-reinforced resin having a lower specific gravity than the head body, and the ratio (S2/S3) of the total S2 of the opening areas of the crown portion to the total S3 of the opening areas of the sole portion is 0.2 to 0.6.
However, in the technique described in patent document 1, since a large amount of low specific gravity material is used on the sole side, it is difficult to reduce the center of gravity. When the present invention is assumed to be used as a fairway wood, the technique described in patent document 1 may cause the fiber-reinforced resin provided in the opening of the sole to contact the ground surface and be damaged when a ball is hit.
Patent document 1: japanese patent No. 4482387
Disclosure of Invention
In view of the above circumstances, an object of the present invention is to provide a fairway wood type golf club head and a golf club, which can achieve a lower center of gravity and improve durability.
Technical solution for solving technical problem
In order to achieve the above object, a golf club head according to one aspect of the present invention includes: a fairway wood-type head body having a face portion, a crown portion, and a sole portion; a recess provided on a surface of the rod bottom; and a low specific gravity material which is provided on the bottom surface of the recess and has a lower specific gravity than the head body.
This can lower the center of gravity of the fairway wood type golf club to realize low spin, thereby improving the flight distance performance. Here, the low specific gravity material may be a material having a specific gravity of less than 2, such as carbon or glass fiber, in the case of a non-metal material, or a material having a specific gravity of 2.5 or more and less than 8, such as titanium, stainless steel, or aluminum, in the case of a metal material.
The recessed portion may have both ends extending in the direction from the face portion toward the back side, and the sole portion may be located in a range from 10% to 90% of the entire length of the sole portion extending in the direction from the face portion toward the back side.
Thus, the weight is placed in the front part of the sole (near the face of the club), thereby achieving a lower center of gravity. Further, by disposing the weight at the rear of the sole, which is located far from the center of gravity of the head, the moment of inertia can be increased, and the flight distance performance at off-center hitting can be improved.
The shaft bottom portion may satisfy Ssl/Ss ≧ 0.5 with the area of the entire shaft bottom portion being Ss and the area of the recess in the shaft bottom portion being Ssl.
Thus, the area of the recess is 50% or more of the entire pole bottom, thereby more reliably achieving a lower center of gravity and lower rotation.
At least a part of the crown portion may be formed of the low specific gravity material.
Thus, the low specific gravity material is provided in the crown portion in addition to the shaft bottom portion, and further low center of gravity and low rotational speed can be achieved.
The crown portion may satisfy Scl/Sc of not less than 0.6, where Scl is an area of the entire crown portion and Scl is an area of a portion of the crown portion occupied by the low specific gravity material.
Thus, the area occupied by the low specific gravity material of the crown portion is 60% or more of the entire crown portion, whereby the center of gravity can be lowered and the rotation can be lowered more reliably.
The portion of the sole portion or the crown portion other than the low specific gravity material may be constituted by a metal material. In this case, the low specific gravity material may be a non-metallic material having a lower specific gravity than the metallic material.
Here, the metallic material is, for example, 64 titanium, and the non-metallic material is, for example, carbon or glass fiber.
When a point of the face portion on which the center of gravity of the golf club head is projected is set as a center of gravity on the face of the face portion, a distance from the face to the center of gravity on the face in a vertical direction of a ground, that is, a height of center of gravity on the face of the face may be 17mm or less.
Thereby enabling low spin conversion by further low gravity centering.
The moment of inertia about a ground-perpendicular-direction axis of rotation passing through the center of gravity of the golf club head may be 1700 g-cm2The above.
Thus, by increasing the so-called transverse inertia, the difference in flight distance due to the deviation of the hitting point in the left-right direction of the face portion can be further reduced, and the flight distance performance at off-center hitting can be further improved.
The moment of inertia about a rotation axis passing through the center of gravity of the golf club head in the toe-heel direction may be 700g cm2The above.
Thus, by increasing the so-called vertical moment of inertia, the difference in flight distance due to the vertical deviation of the hitting point of the face portion can be further reduced, and the flight distance performance at off-center hitting can be further improved.
A golf club according to another embodiment of the present invention includes any of the above-described golf club heads and a golf club shaft attached to the above-described golf club head.
As described above, according to the present invention, it is possible to provide a fairway wood type golf club head and a golf club, which can achieve a lower center of gravity and improve durability. However, this effect is not intended to limit the present invention.
Drawings
FIG. 1 is a plan view of a head portion of a golf club according to a first embodiment of the present invention.
Fig. 2 is a bottom view of the head portion of the golf club described above.
Fig. 3 is a view of the face side surface of the head portion of the golf club.
Fig. 4 is a view of a face on the toe side of the head portion of the golf club.
Fig. 5 is a sectional view a-a of the golf club head shown in fig. 3.
FIG. 6 is a top view of a head portion of a golf club according to a second embodiment of the present invention.
Fig. 7 is a bottom view of the head portion of the golf club described above.
Fig. 8 is a view of the face side surface of the head portion of the golf club.
Fig. 9 is a view of a face on the toe side of the head portion of the golf club.
Fig. 10 is a sectional view a-a of the golf club head of fig. 8.
Fig. 11 is a diagram showing a relationship between the height of the center of gravity and the moment of inertia of a golf club head according to a modification of the present invention.
Description of the reference numerals
1 … club head body;
1a … face of the rod;
1b … crown;
1c … rod bottom;
2 … recess;
3. 4 … low specific gravity material;
10 … golf club head;
100 … golf clubs;
g … center of gravity;
the height of center of gravity on the face of HG ….
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[ first embodiment ]
First, a first embodiment of the present invention will be explained.
Fig. 1 is a plan view of a golf club head part of a golf club according to the present embodiment. FIG. 2 is a bottom view of the golf club head portion. Fig. 3 is a view of the face side face of the golf club head part. FIG. 4 is a view of the face of the golf club head part on the toe side. Fig. 5 is a sectional view taken along line a-a in fig. 3.
As shown in these figures, the golf club 100 of the present embodiment has a golf club head 10 and a golf club shaft 5 attached to the golf club head 10.
The golf club shaft 5 is attached to the golf club head 10 via, for example, a socket not shown, but may be directly attached without passing through the socket or the like.
The golf club head 10 has a head body 1. The head body 1 has a face portion 1a, a crown portion 1b, and a sole portion 1c, and is a fairway wood type head having a hollow structure with an internal space formed by them. In the example of the figure, the head body 1 is made of metal such as 64 titanium, for example.
A recess 2 is formed in a substantially central portion of the rod bottom portion 1 c.
As shown in fig. 2, the length LR between both ends of the recess 2 in the direction from the face portion 1a toward the back side (Y direction) is in a range from 10% to 90% of the total length LS of the sole portion 1c in the direction from the face portion toward the back side (Y direction). In the present embodiment, the recess 2 is formed in a rectangular shape elongated in the X direction in each drawing, and the length LR is set to about one third of the total length LS.
Further, the lever bottom 2c satisfies Ssl/Ss ≧ 0.5 with Ss as the area of the entire lever bottom 2c and Ssl as the area of the recess 2 in the lever bottom 2 c. That is, the recess 2 has an area of 50% or more of the entire stem bottom portion 2 c.
The bottom surface of the recess 2 is formed of a low specific gravity material 3 having a lower specific gravity than the metal material of the head body 1. The low specific gravity material 3 is, for example, a non-metallic material having a specific gravity lower than 2, such as carbon or glass fiber.
At least a part (substantially the center part) of the crown portion 1b is also formed by the low specific gravity material 4 similar to the low specific gravity material 3.
The area of the whole crown part 1b is Sc, the area of the part occupied by the low specific gravity material 4 in the crown part 1b is Scl, and Scl/Sc of the crown part 1b is more than or equal to 0.6. That is, the low specific gravity material 4 has an area of 60% or more of the entire crown portion 1 b.
By forming the areas of the bottom portion 1c and the crown portion 1b to be a certain extent or more by the low specific gravity material 3 and the low specific gravity material 4 in this way, the weight is placed in the front portion (the vicinity of the face portion 1 a) of the bottom portion 1c and the crown portion 1b, and the center of gravity can be lowered. This reduces the amount of spin at the time of hitting a ball, and improves the flight distance performance.
At the same time, by disposing the weight at the rear portion of the sole located far from the center of gravity of the golf club head 10, the moment of inertia can be increased, and the flight distance performance at off-center impact can be improved.
Further, by providing the recess 2 in the center portion of the sole portion 1c and providing the low specific gravity material 3 on the bottom surface of the recess 2, the center portion of the sole portion 1c can be made lightweight, and the low specific gravity material 3 can be prevented from contacting the ground and being damaged or worn at the time of hitting a ball.
As shown in fig. 4, when a point on the face of the face portion 1a on which the center of gravity G of the golf club head 10 is projected is set as the center of gravity FG on the face, the height HG of the center of gravity on the face, which is the distance from the face GR to the center of gravity FG on the face in the vertical direction of the ground GR, is preferably 17mm or less.
The moment of inertia (transverse moment of inertia) about the axis of rotation in the perpendicular direction to the ground GR passing through the center of gravity G of the golf club head 10 is preferably 1700G cm2The above.
The moment of inertia (moment of inertia in longitudinal direction) about a rotation axis passing through the center of gravity G of the golf club head in the toe-heel direction is preferably 700G cm2The above.
Thus, by increasing the so-called moment of inertia in lateral and vertical directions, the difference in the flight distance due to the deviation of the hitting point in the horizontal and vertical directions of the face portion 2a can be further reduced, and the flight distance performance at off-center hitting can be improved.
[ nodules ]
According to the present embodiment described above, the low specific gravity material 3 and the low specific gravity material 4 are provided in the shaft bottom portion 2c and the crown portion 2b, so that the center of gravity of the fairway wood type golf club can be lowered to realize low spin, and the moment of inertia can be increased to improve the flight distance performance.
[ second embodiment ]
Next, a second embodiment of the present invention will be explained. In the present embodiment and the following embodiments, the same reference numerals are given to the parts having the same functions and configurations as those of the first embodiment, and the description thereof will be omitted or simplified.
Fig. 6 is a plan view of the golf club head part of the golf club according to the embodiment. FIG. 7 is a bottom view of the golf club head portion. Fig. 8 is a view of the face side face of the golf club head part. FIG. 9 is a view of the face of the golf club head part on the toe side. Fig. 10 is a sectional view taken along line a-a in fig. 8. Fig. 6 corresponds to fig. 1, fig. 7 corresponds to fig. 2, fig. 8 corresponds to fig. 3, fig. 9 corresponds to fig. 4, and fig. 10 corresponds to fig. 5.
As shown in these figures, the golf club head 10 of the golf club 200 of the present embodiment is formed of a metal material without providing a low specific gravity material in the crown portion 2b, and the low specific gravity material 3 is provided only in the bottom surface of the concave portion 3 of the sole portion 2c, as compared with the golf club 100 of the first embodiment.
Even if the low specific gravity material 4 of the crown portion 2b is eliminated in this way, the low specific gravity material 3 having an area of a certain degree or more is provided in the shaft bottom portion 2c, so that both low center of gravity and high moment of inertia can be achieved, and the flight distance performance can be improved.
[ modified examples ]
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
In the above embodiment, the center of gravity height HG on the face of the golf club head 10 is 17mm, and the lateral moment of inertia (lateral MOI) is 1700g cm2Above, a vertical moment of inertia (vertical MOI) of 700 g-cm2The above examples, but these values can be changed as appropriate. For example, the golf club head 10 may be designed in such a manner that the height of center of gravity on the face, the lateral MOI, and the longitudinal MOI satisfy the conditions shown in fig. 11.
In the above embodiment, the low specific gravity materials 3 and 4 are non-metallic materials, but the low specific gravity material may be a metallic material. The metal material in this case may be, for example, a material having a specific gravity of 2.5 or more and less than 8, such as titanium, stainless steel, or aluminum.
In the above embodiment, the shapes, sizes, and depths of recess 2 (low specific gravity material 3) and low specific gravity material 4 are not limited to those shown in the drawings, and can be appropriately changed.

Claims (10)

1. A golf club head, comprising:
a fairway wood-type head body having a face portion, a crown portion, and a sole portion;
a recess provided on a surface of the rod bottom;
and a low specific gravity material that is provided on the bottom surface of the recess and has a lower specific gravity than the head body.
2. The golf club head of claim 1,
the recessed portion extends from both ends of the recessed portion in the direction from the face portion toward the back side to a position in a range from 10% to 90% of the entire length of the sole portion in the direction from the face portion toward the back side.
3. The golf club head according to claim 1 or 2,
the area of the whole rod bottom is taken as Ss, the area of the concave part in the rod bottom is taken as Ssl, and the rod bottom satisfies Ssl/Ss ≥ 0.5.
4. The golf club head according to claim 1 or 2,
at least a part of the crown portion is formed by the low specific gravity material.
5. The golf club head of claim 4,
and taking the whole area of the crown part as Sc and the area of the part occupied by the low specific gravity material in the crown part as Scl, wherein the crown part meets the requirement that Scl/Sc is more than or equal to 0.6.
6. The golf club head of any of claims 1-5,
the portion of the sole portion or the crown portion other than the low specific gravity material is composed of a metal material,
the low specific gravity material is a non-metallic material having a low specific gravity as compared with the metallic material.
7. The golf club head of any of claims 1-6,
when a point on the face of the face portion, at which the center of gravity of the golf club head is projected, is defined as a center of gravity on the face, the height of the center of gravity on the face, which is the distance from the face to the center of gravity on the face in the vertical direction of the ground, is not more than 17 mm.
8. The golf club head of any of claims 1-7,
the moment of inertia about a rotation axis passing through the center of gravity of the golf club head in the vertical direction of the ground is 1700g cm2The above.
9. The golf club head of any of claims 1-8,
the moment of inertia around the axis of rotation in the toe-heel direction passing through the center of gravity of the golf club head is 700g cm2The above.
10. A golf club is provided with:
the golf club head of any of claims 1-9;
a golf club shaft mounted to the golf club head.
CN202010165013.XA 2019-03-12 2020-03-11 Golf club head and golf club Pending CN111686427A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019045202A JP2020146175A (en) 2019-03-12 2019-03-12 Golf club head and golf club
JP2019-045202 2019-03-12

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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5658207A (en) * 1994-03-22 1997-08-19 Daiwa Seiko, Inc. Golf club head
US5911638A (en) * 1994-07-05 1999-06-15 Goldwin Golf Usa, Inc. Golf club head with adjustable weighting
JP2005137819A (en) * 2003-11-04 2005-06-02 Fu Sheng Industrial Co Ltd Golf club head, and structure of composite board thereof
CN1714894A (en) * 2004-07-02 2006-01-04 复盛股份有限公司 Combined structure for golf club head
US7004852B2 (en) * 2002-01-10 2006-02-28 Dogleg Right Corporation Customizable center-of-gravity golf club head
CN1757421A (en) * 2004-10-04 2006-04-12 普利司通运动株式会社 Golf club head
CN1778426A (en) * 2004-11-18 2006-05-31 复盛股份有限公司 Adjustable weighing structure for golf driver head
CN100333811C (en) * 2004-07-09 2007-08-29 复盛股份有限公司 Golf club head with its bob-weight faying surface bieng formed as channel
JP2008173314A (en) * 2007-01-19 2008-07-31 Sri Sports Ltd Golf club head
US20080214322A1 (en) * 2007-03-01 2008-09-04 Advanced International Multitech Co., Ltd. Golf club head
CN101970061A (en) * 2008-02-12 2011-02-09 耐克国际有限公司 Golf clubs and golf club heads having adjustable weight members
CN104274958A (en) * 2013-07-08 2015-01-14 邓禄普体育用品株式会社 Golf club
CN104338304A (en) * 2013-07-24 2015-02-11 邓禄普体育用品株式会社 Golf club

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5658207A (en) * 1994-03-22 1997-08-19 Daiwa Seiko, Inc. Golf club head
US5911638A (en) * 1994-07-05 1999-06-15 Goldwin Golf Usa, Inc. Golf club head with adjustable weighting
US7004852B2 (en) * 2002-01-10 2006-02-28 Dogleg Right Corporation Customizable center-of-gravity golf club head
JP2005137819A (en) * 2003-11-04 2005-06-02 Fu Sheng Industrial Co Ltd Golf club head, and structure of composite board thereof
CN1714894A (en) * 2004-07-02 2006-01-04 复盛股份有限公司 Combined structure for golf club head
CN1326584C (en) * 2004-07-02 2007-07-18 复盛股份有限公司 Combined structure for golf club head
CN100333811C (en) * 2004-07-09 2007-08-29 复盛股份有限公司 Golf club head with its bob-weight faying surface bieng formed as channel
CN1757421A (en) * 2004-10-04 2006-04-12 普利司通运动株式会社 Golf club head
CN1778426A (en) * 2004-11-18 2006-05-31 复盛股份有限公司 Adjustable weighing structure for golf driver head
JP2008173314A (en) * 2007-01-19 2008-07-31 Sri Sports Ltd Golf club head
US20080214322A1 (en) * 2007-03-01 2008-09-04 Advanced International Multitech Co., Ltd. Golf club head
CN101970061A (en) * 2008-02-12 2011-02-09 耐克国际有限公司 Golf clubs and golf club heads having adjustable weight members
CN104274958A (en) * 2013-07-08 2015-01-14 邓禄普体育用品株式会社 Golf club
CN104338304A (en) * 2013-07-24 2015-02-11 邓禄普体育用品株式会社 Golf club

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Application publication date: 20200922

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