CN114425146B - Iron golf club head - Google Patents

Iron golf club head Download PDF

Info

Publication number
CN114425146B
CN114425146B CN202111196410.4A CN202111196410A CN114425146B CN 114425146 B CN114425146 B CN 114425146B CN 202111196410 A CN202111196410 A CN 202111196410A CN 114425146 B CN114425146 B CN 114425146B
Authority
CN
China
Prior art keywords
golf club
club head
circle
rib
face portion
Prior art date
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.)
Active
Application number
CN202111196410.4A
Other languages
Chinese (zh)
Other versions
CN114425146A (en
Inventor
齐藤史弥
长井康晴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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 CN114425146A publication Critical patent/CN114425146A/en
Application granted granted Critical
Publication of CN114425146B publication Critical patent/CN114425146B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • A63B53/04—Heads
    • A63B53/045—Strengthening ribs
    • 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
    • A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
    • 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
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • 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
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A63B53/042—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head
    • 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
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A63B53/042—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head
    • A63B53/0425—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head the face insert comprising two or more different materials
    • 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
    • A63B53/0433—Heads with special sole configurations
    • 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
    • A63B53/047—Heads iron-type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations
    • 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

Landscapes

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

Abstract

The invention provides an iron golf club head capable of sufficiently improving the hitting feel. An iron golf club head (10) is provided with a face (1) and a sole (2) extending rearward from the lower edge of the face (1), wherein a rib (8) connected to the sole (2) and disposed on the rear surface of the face (1) is provided, the rib (8) extends from the sole (2) into a long circular area surrounded by a first circle, a second circle and two line segments, the radius of the first circle being 10mm, the centroid of the rear surface (1 b) of the face (1) or the projection point of the centroid of the front surface (1 a) of the face (1) onto the rear surface (1 b) being the center, the radius of the second circle being 10mm, the two line segments being parallel to each other and circumscribed with the first circle and the second circle.

Description

Iron golf club head
Technical Field
The present invention relates to iron golf club heads.
Background
The quality required for an iron golf club head is a good feel. In order to improve the feel of a ball hit, it is desirable to control the vibration of the face portion. From this point of view, in a golf club head in which the rebound coefficient is increased by reducing the thickness of the face portion, a rib is often disposed on the rear surface side of the face portion (see U.S. patent application publication No. 2017/028270).
Prior art literature
Patent literature
Patent document 1: U.S. patent application publication 2017/028270 specification
Disclosure of Invention
Problems to be solved by the invention
Patent document 1 describes that: a pair of reinforcing ribs are provided parallel to each other on the back surface side of the face portion. Patent document 1 describes that: the pair of reinforcing ribs are provided so as to extend in the vertical direction from the lower portion to the upper portion of the face portion at positions distant from the face portion.
However, the present inventors have found through intensive studies that it is difficult to sufficiently improve the feel of a ball hit by the rib described in the publication.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an iron golf club head capable of sufficiently improving a feel of a ball.
Technical scheme for solving problems
In order to solve the above-described problems, an aspect of the present invention provides an iron-type golf club head including a face portion and a sole portion extending rearward from a lower edge of the face portion, wherein the iron-type golf club head includes a rib connected to the sole portion and disposed on a rear surface of the face portion, the rib extends from the sole portion into an oblong region surrounded by a first circle having a radius of 10mm and a second circle having a radius of 10mm and a projection point of the rear surface of the face portion or a centroid of a front surface of the face portion onto the rear surface, and the second circle has a radius of 10mm and a projection point of the center of gravity of the golf club head onto the rear surface, the two line segments being parallel to each other and circumscribed with the first circle and the second circle.
The iron golf club head may have a lateral moment of inertia of 4000 g/cm 2 The above.
The front surface of the face portion may have an area of 36.7cm 2 The above.
The upper end portion of the reinforcing rib may be located in the oblong region.
The upper end portion of the reinforcing rib may be located on an imaginary straight line passing through the center of the first circle and the center of the second circle, or may be located above the imaginary straight line.
The minimum distance between the center of the first circle and the reinforcing rib may be equal to or less than the minimum distance between the center of the second circle and the reinforcing rib.
The rib may be inclined from the toe side to the heel side from the sole portion toward the oblong region.
The reinforcing rib may be connected to the sole portion at a toe side position.
The height of the ribs in the oblong region is preferably 5mm or more.
The sole portion may have a groove extending in the toe-heel direction, and the reinforcing rib may be connected to a bottom surface and a side surface of the groove.
In the present invention, "front" means one side of the impact, and "rear" means the opposite side thereof. The "front surface of the face portion" refers to a region on the toe side of the boundary line on the toe side of the heel portion in the front surface of the golf club head (see a region within the thick frame of fig. 5). The "back surface of the face portion" means a flat surface (refer to an area surrounded by thick solid lines and thick broken lines in fig. 6) opposed to the front surface of the face portion. The term "flat surface" means a shape including irregularities having a height or depth of 0.5mm or less. "a projection point at which the center of gravity of the golf club head is projected onto the rear surface" means a projection point at which the center of gravity of the golf club head is projected in the normal direction of the front surface of the face portion with respect to the rear surface of the face portion. The term "lateral moment of inertia" refers to moment of inertia about a vertical axis passing through the center of gravity of the golf club head in a state where the iron golf club head is set in a horizontal plane so as to have a predetermined loft angle and loft angle. The term "the rib is connected to the sole portion at the toe side" means that the rib is connected to the sole portion at the toe side with reference to the center in the toe-heel direction of the back surface of the face portion. The "toe-heel direction" refers to a horizontal direction perpendicular to the front-rear direction in a state where the iron golf club head is set in a horizontal plane so as to have a predetermined loft angle and head tilt angle.
Effects of the invention
In the iron type golf club head according to the aspect of the present invention, the reinforcing rib is selectively provided on the rear surface of the portion of the face portion that is likely to vibrate, so that the feel of the ball striking can be improved.
Drawings
Fig. 1 is a schematic front view (front view) showing an iron golf club head according to an embodiment of the present invention.
Fig. 2 is a schematic rear view of the iron golf club head of fig. 1.
Fig. 3 is a partially enlarged view showing the arrangement of the rib of the iron golf club head of fig. 2.
Fig. 4 is a cross-sectional view taken along line IV-IV of the iron golf club head of fig. 2.
Fig. 5 is a schematic view for explaining a front surface of a face portion of the iron type golf club head of fig. 1.
Fig. 6 is a schematic view for explaining the rear surface of the face portion of the iron golf club head of fig. 1.
Fig. 7 is a schematic rear view showing an iron golf club head according to an embodiment different from the iron golf club head of fig. 1.
Description of the reference numerals
1 face portion
1a front surface
1b back side
2 pole bottom
2a groove
3 roof portion
4 toe
5 heel part
6-rod neck
7 rear wall portion
7a high rigidity portion
8. 18 reinforcing rib
9 ball bat
10. 20 iron type golf club head (Golf club head)
11 groove
C1, C11 first circle
C2 second circle
L1, L2, L11, L12 line segment
Centroid of front surface of G1 face part
Centroid of back of G11 face
G1' projects the centroid of the front surface of the face portion to a projection point on the back surface of the face portion
G2' is a projection point for projecting the center of gravity of the golf club head onto the rear surface of the face portion
R1 and R11 are long circular regions
V an imaginary straight line passing through the center of the first circle and the center of the second circle
X iron golf club
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings as appropriate.
First embodiment
< iron club head >
The iron golf club head 10 (hereinafter also simply referred to as "golf club head 10") of fig. 1 to 4 includes a face portion 1 and a sole portion 2 extending rearward from a lower edge of the face portion 1. The golf club head 10 includes a crown 3 extending rearward from the upper edge of the face portion 1, a toe 4 extending rearward from the toe side (front end side) of the face portion 1, a heel 5 provided on the heel side (opposite to the front end side) of the face portion 1, and a hosel 6 provided continuously with the heel 5. The golf club head 10 further includes a rear wall portion 7 extending from the rear end of the sole 2 and rising upward so as to be separated from the rear surface 1b of the face portion 1. The golf club head 10 includes a rib 8 connected to the sole 2 and disposed on the rear surface 1b of the face portion 1. The golf club head 10 is used as an iron golf club (golf club) X in a state where a club (shaft) 9 is connected to the hosel 6. The golf club head 10 is composed mainly of a metal or alloy such as iron or stainless steel.
The golf club head 10 is preferably designed to improve the directionality of the shot. In more detail, the golf club head 10 is designed to increase the moment of inertia by decreasing the thickness of the face portion 1 (the distance between the front surface 1a and the rear surface 1b of the face portion) while increasing the area of the front surface 1a of the face portion 1 (i.e., increasing the length in the toe-heel direction). In such a golf club head, the rigidity of the face portion is reduced by the thinning of the face portion, and the feel of the ball is deteriorated. In contrast, in the golf club head 10, the rib 8 is disposed on the rear surface 1b of the face portion 1 to enhance the feel of the ball.
As the lower limit of the lateral moment of inertia of the golf club head 10, 4000g cm is preferable 2 More preferably 4100 g.cm 2 . The golf club head 10 can sufficiently improve the directionality of the shot by setting the moment of inertia to the lower limit or more. In addition, even when the golf club head 10 has such a large moment of inertia, the arrangement of the ribs 8 is controlled as described later, so that the weight of the entire golf club head 10 can be suppressed from increasing, while also achieving both lateral rotation and inertiaAn increase in the amount and an improvement in the feel of a ball hit. The golf club head 10 can achieve both an increase in the moment of inertia and an improvement in the feel of the ball, and the upper limit of the moment of inertia is not particularly limited. However, in the structure of the golf club, the upper limit of the lateral moment of inertia may be, for example, 4600 g/cm 2 。
(face portion)
The face portion 1 has a front surface 1a (see an area within the thick frame of fig. 5) constituting a striking surface and a rear surface 1b (see an area surrounded by a thick solid line and a thick broken line of fig. 6) on the opposite side of the front surface 1 a. A plurality of grooves 11 are provided in the front surface 1 a. The plurality of grooves 11 extend in the toe-heel direction with intervals in the up-down direction.
As the lower limit of the area of the front surface 1a of the face portion 1, 36.7cm is preferable 2 More preferably 37.7cm 2 . The golf club head 10 can sufficiently improve the moment of inertia by setting the area of the front surface 1a of the face portion 1 to the lower limit or more. On the other hand, when the area of the front surface 1a of the face portion 1 is equal to or larger than the lower limit, the face portion 1 is easily vibrated by thinning the face portion 1, and deterioration of the feel of hitting is easily caused. In this regard, the golf club head 10 can suppress an increase in the weight of the entire golf club head 10 and improve the feel of the ball striking by controlling the arrangement of the ribs 8. The upper limit of the area of the front surface 1a of the face portion 1 is not particularly limited, and the area of the front surface 1a of the face portion 1 can be increased and the feel of the ball striking can be improved. However, in terms of the structure of the golf club, practically, the upper limit of the area may be, for example, 40.7cm 2 。
(bottom of rod)
The sole 2 extends rearward from the lower edge of the face portion 1 while being connected to the toe portion 4 at the toe-side end and to the heel portion 5 at the heel-side end. The sole portion 2 is thin plate-shaped having a toe-heel direction as a longitudinal direction and a front-rear direction as a width direction.
As shown in fig. 2 to 4, the sole 2 has a groove 2a extending in the toe-heel direction. The sole portion 2 improves the flexibility of the face portion 1 by having grooves 2a.
As shown in fig. 4, the groove 2a may be directly connected to the back surface 1b of the face portion 1. That is, the front side surface of the groove 2a may also serve as the back surface 1b of the face portion 1. According to this structure, the sole portion 2 is less likely to interfere with the deflection of the face portion 1.
(rear wall portion)
The rear wall portion 7 contributes to an increase in the moment of inertia of the golf club head 10 by relatively increasing the weight at a position apart from the center of gravity of the golf club head 10 in the horizontal direction. The front surface of the rear wall 7 doubles as a side surface provided on the rear side of the groove 2a of the lever bottom 2. The rear wall portion 7 has a high-rigidity portion 7a having a rigidity greater than that of the other portion on the toe side in the toe-heel direction. The high rigidity portion 7a is an enlarged portion having an enlarged cross-sectional area perpendicular to the toe-heel direction, for example. The golf club head 10 can easily increase the moment of inertia by providing the rear wall portion 7 with the high rigidity portion 7a.
(reinforcing bar)
As shown in fig. 2 to 4, the reinforcing ribs 8 extend upward from the pole bottom 2. As shown in fig. 2 and 3, the rib 8 extends into a long circular region R1 surrounded by a first circle C1, a second circle C2, and two line segments L1 and L2, the first circle C1 having a radius of 10mm and a projection point G1 'of the centroid G1 of the front surface 1a of the face portion 1 onto the rear surface 1b, and the second circle C2 having a radius of 10mm and a projection point G2' of the centroid of the golf club head 10 onto the rear surface 1b of the face portion 1, the two line segments L1 and L2 being parallel to each other and circumscribed with the first circle C1 and the second circle C2. The first circle C1 is a virtual circle drawn on the rear surface 1b of the face portion 1 around the projected point G1'. The second circle C2 is a virtual circle drawn on the rear surface 1b of the face portion 1 around the projection point G2'.
The golf club head 10 aims to suppress an increase in the overall weight of the golf club head 10 and to improve the feel of a ball hit. Therefore, the rib 8 is preferably selectively provided at a position suitable for improving the feel of the ball striking. From this point of view, the reinforcing beads 8 are selectively provided at portions of the face portion 1 that are prone to vibration. To explain in more detail, when the face portion 1 is bent around the club 9 and the heel portion 5 continuing from the club 9, the centroid G1 of the front surface 1a of the face portion 1 may become a portion of the face portion 1 that is most likely to vibrate. In addition, the contact range between the front surface 1a of the face portion 1 and the shot at the time of the instantaneous impact of the shot is generally circular with a radius of about 10mm. Therefore, the first circle C1 corresponds to a region that is most likely to vibrate at the time of the instant impact of the impact. In addition, in the golf club head 10, rigidity in the vicinity of the projection point G2' tends to be small from the viewpoint of increasing the moment of inertia. Therefore, the second circle C2 corresponds to an area where the face portion 1 is likely to vibrate. From these points of view, the oblong region R1 constituted by the first circle C1, the second circle C2, and the region sandwiched between these two circles C1, C2 corresponds to a region of the golf club head 10 where the face portion 1 is likely to vibrate. Therefore, the rib 8 extends from the sole 2 into the oblong region R1, whereby the rib 8 can efficiently suppress the vibration of the face portion 1, and can suppress the increase in the weight of the entire golf club head 10 and improve the feel of the ball striking. The golf club head 10 may be provided with other reinforcing ribs in addition to the reinforcing ribs 8. However, from the viewpoint of suppressing an increase in the weight of the entire golf club head 10, it is preferable that the golf club head 10 has only one rib 8.
The rib 8 is directly connected to the back surface 1b of the face portion 1 without other members. The rib 8 is plate-shaped with the toe-heel direction as the thickness direction. The thickness of the reinforcing ribs 8 may also be uniform. Preferably, the upper end of the reinforcing bead 8 does not reach the top 3. That is, a gap is preferably formed between the upper end portion of the rib 8 and the top portion 3. The golf club head 10 can reduce the length of the rib 8 in the vertical direction, thereby reducing the size of the rib and suppressing an increase in the weight of the entire golf club head 10.
The rib 8 may extend into the oblong region R1, or may extend above the oblong region R1 beyond the oblong region R1. That is, in the present invention, the term "extending into the oval region" means a structure including a position where the reinforcing rib extends beyond the oval region. However, the upper end portion of the rib 8 is preferably located in the oblong region R1. The golf club head 10 can suppress vibration of the oblong region R1 by extending the rib 8 fixed to the sole 2 into the oblong region R1, thereby improving the feel of a ball. Therefore, by locating the upper end portion of the rib 8 in the oblong region R1, the rib 8 can be reduced in size within a range in which the effect of improving the feel of the ball is obtained, and an increase in the weight of the entire golf club head 10 can be suppressed.
The upper end portion of the rib 8 may be located below an imaginary straight line V passing through the center of the first circle C1 and the center of the second circle C2. However, as shown in fig. 3, the upper end portion of the rib 8 is preferably located on or above an imaginary straight line V passing through the center of the first circle C1 and the center of the second circle C2. With this structure, the vibration of the face portion 1 at the time of the instant impact of the impact can be suppressed relatively easily, and the impact feeling can be improved easily.
In the case where the upper end portion of the rib 8 is located on the virtual straight line V or above the virtual straight line V, it is preferable that the rib 8 extends on a line segment connecting the center of the first circle C1 and the center of the second circle C2.
When the first circle C1 and the second circle C2 intersect with each other, the bead 8 preferably extends to a region included in both the first circle C1 and the second circle C2. With this structure, the vibration of the face portion 1 at the time of the instant impact of the impact can be suppressed relatively easily, and the impact feeling can be improved easily.
The minimum distance between the center of the first circle C1 and the reinforcing rib 8 is preferably less than the minimum distance between the center of the second circle C2 and the reinforcing rib 8. By providing the rib 8 near the first circle C1, which is the most likely portion of the face portion 1 to vibrate, vibration of the face portion 1 at the time of the instant impact of the striking can be more easily suppressed. When the minimum distance between the center of the first circle C1 and the rib 8 is equal to or less than the minimum distance between the center of the second circle C2 and the rib 8, the minimum distance between the center of the first circle C1 and the rib 8 may be 0. That is, the reinforcing rib 8 may be disposed at the center of the first circle C1.
The reinforcing rib 8 is preferably inclined from the toe side toward the heel side from the sole 2 toward the oblong region R1. As described above, the golf club head 10 is provided with the high rigidity portion 7a on the toe side of the rear wall portion 7. Therefore, when the rib 8 is inclined from the toe side to the heel side from the sole 2 toward the oblong region R1, the rib 8 is connected to the high rigidity portion 7a or at least to a position close to the high rigidity portion 7a. According to this structure, the rib 8 can be connected to a portion of the golf club head 10 that is not likely to vibrate (that is, the rib 8 can be extended from a portion of the golf club head 10 that is not likely to vibrate to a portion that is likely to vibrate), and the feel of the golf club head 10 can be easily improved.
The reinforcing rib 8 extends linearly from the lower end portion to the upper end portion. According to this structure, the length of the rib 8 is shortened to suppress an increase in weight of the golf club head 10, and the feel of the ball striking can be easily and effectively improved.
Preferably, the reinforcing bars 8 are joined to the sole portion 2 at a toe-side position. Further, the reinforcing rib 8 is more preferably connected to the high rigidity portion 7a. With this structure, the rib 8 can be connected to a portion of the golf club head 10 which is not likely to vibrate, and the feel of the golf club head 10 can be easily improved.
As shown in fig. 4, the reinforcing rib 8 is connected to the groove 2a of the pole bottom 2. The ribs 8 are preferably connected to the bottom surface and the side surfaces of the groove 2a. In other words, the lower end portion of the reinforcing bead 8 is preferably fitted into the groove 2a. In fig. 4, the rib 8 is connected to a front side surface of the groove 2a (i.e., the back surface 1b of the face portion 1), a bottom surface of the groove 2a (i.e., the upper surface of the sole portion 2), and a rear side surface of the groove 2a (i.e., the front surface of the rear wall portion 7). The golf club head 10 is easy to suppress vibration of the rib 8 by connecting the rib 8 to the bottom surface and the side surface of the groove 2a. As a result, the feeling of hitting the ball is easily and reliably improved.
The height of the rib 8 in the oblong region R1 (the length in the vertical direction with respect to the rear surface 1b of the face portion 1) is preferably 5mm or more. That is, the minimum height of the rib 8 in the oblong region R1 is preferably 5mm. If the height does not meet the lower limit, the rib 8 is liable to vibrate at the moment of impact of the ball striking, and the feel of the golf club head 10 may not be sufficiently improved. The upper limit of the height of the rib 8 in the oblong region R1 is not particularly limited, but is preferably 10mm, more preferably 7mm, from the viewpoint of suppressing the increase in weight of the rib 8.
The maximum height (maximum length in the vertical direction with respect to the rear surface 1b of the face portion 1) of the rib 8 in the region connected to the groove 2a is preferably 8mm or more. If the maximum height does not satisfy the lower limit, the rib 8 is liable to vibrate at the moment of impact of the ball striking, and the feel of the golf club head 10 may not be sufficiently improved. The upper limit of the maximum height of the rib 8 in the region connected to the groove 2a is not particularly limited, but is preferably 12mm, more preferably 10mm, from the viewpoint of suppressing the increase in weight of the rib 8.
As shown in fig. 4, the height of the rib 8 may be increased from the upper end portion thereof toward the side (the side having the largest height) connected to the groove 2a. According to this structure, the weight of the rib 8 can be reduced while suppressing the vibration of the rib 8 at the time of the momentary impact of the impact, and the weight of the golf club head 10 can be suppressed from increasing.
< advantage >
The golf club head 10 can improve the feel of a ball hit by selectively providing the rib 8 on the rear surface 1b of the portion of the face portion 1 that is prone to vibration.
Second embodiment
< Golf club head >
The golf club head 20 of fig. 7 includes a face portion 1 and a sole portion 2 extending rearward from a lower edge of the face portion 1. The golf club head 20 includes a rib 18 connected to the sole 2 and disposed on the rear surface 1b of the face portion 1.
The golf club head 20 may have the same structure as the golf club head 10 of fig. 1, except for the arrangement of the ribs 18. Therefore, only the arrangement of the reinforcing ribs 18 will be described below.
(reinforcing bar)
The rib 18 extends to an oblong region R11 surrounded by a first circle C11, a second circle C2, and two line segments L11 and L12, the radius of the first circle C11 being 10mm, the centroid G11 of the rear surface 1b of the face portion 1 being the center, the radius of the second circle C2 being 10mm, the projection point G2' of the center of gravity of the golf club head 20 onto the rear surface 1b of the face portion 1 being the center, the two line segments L11 and L12 being parallel to each other and circumscribed with the first circle C11 and the second circle C2. The first circle C11 is a virtual circle drawn on the rear surface 1b of the face portion 1 around the centroid G11, and the second circle C2 is a virtual circle drawn on the rear surface 1b of the face portion 1 around the projection point G2'. That is, the first circle C11 of the golf club head 20 is centered on the centroid G11 of the rear surface 1b of the face portion 1 with respect to the first circle C1 of the golf club head 10 of fig. 1, which is centered on the projection point G1' at which the centroid G1 of the front surface 1a of the face portion 1 is projected onto the rear surface 1b.
In the golf club head 20, the rib 18 is selectively provided at a portion of the face portion 1 that is prone to vibration. To explain in more detail, in the golf club head 20, a sole 2, a crown 3, a toe 4, and a heel 5 are provided in a frame shape on the periphery of the back surface 1b of the face portion 1. In other words, the peripheral portion of the face portion 1 on the rear side is fixed by the sole portion 2, the crown portion 3, the toe portion 4, and the heel portion 5. Therefore, the centroid G11 of the back surface 1b of the face portion 1 can become a portion of the face portion 1 that is most prone to vibration. Therefore, the oblong region R11 formed by the first circle C11, the second circle C2, and the region sandwiched between these two circles C11, C2 corresponds to the region of the golf club head 20 where the face portion 1 is likely to vibrate. Therefore, the reinforcing rib 18 extends from the sole 2 into the oblong region R11, whereby the vibration of the sole 1 can be effectively suppressed by the reinforcing rib 18, and the hitting feel can be improved while suppressing an increase in the weight of the entire golf club head 20.
The specific structure of the rib 18 may be the same as the rib 8 of fig. 1, except that the center of the first circle C11 is different from the golf club head 10 of fig. 1. For example, the position of the upper end portion of the rib 18 with respect to the oblong region R11, the inclination direction of the rib 18, the connection position where the rib 18 and the pole bottom 2 are connected, the height of the rib 18, and the like may be set to be the same as the rib 8 of fig. 1.
< advantage >
In the golf club head 20, similarly to the golf club head 10 of fig. 1, the rib 18 is selectively provided on the rear surface 1b of the portion of the face portion 1 that is likely to vibrate, so that the feel of the ball impact can be improved.
Other embodiments
The above embodiment does not limit the structure of the present invention. Therefore, it should be construed that the above embodiments can omit, replace, or add the constituent elements of each part of the above embodiments based on the description of the present specification and technical knowledge, and they all fall within the scope of the present invention.
For example, as long as the bead extends to the oblong region, the minimum distance between the center of the first circle and the bead may be larger than the minimum distance between the center of the second circle and the bead.
The connection position of the rib with respect to the sole portion may be set based on the specific structure of the golf club head. For example, the reinforcing rib may be connected to the bottom portion of the lever at a heel side position. The reinforcing rib may be configured so as not to incline from the toe side to the heel side in the oblong region from the sole portion.
The specific structure of the lever bottom is not limited to the structure described in the above embodiment. For example, the sole portion may not have a groove extending in the toe-heel direction. In addition, even when the groove is provided in the sole portion, the groove may be formed at a position distant from the rear surface of the face portion, for example.
A reinforcing member, a cushioning member, or the like other than the reinforcing rib may be provided on the back surface of the face portion. However, from the viewpoint of remarkably improving the feel of the ball, it is preferable that the reinforcing member other than the reinforcing rib is not disposed on the rear surface of the face portion. In addition, it is preferable that no cushioning member other than the reinforcing rib is disposed on the back surface of the face portion.
Industrial applicability
As described above, the iron golf club head according to the embodiment of the present invention is suitable for improving the feel of a ball hit.

Claims (10)

1. An iron golf club head comprising a face portion, a sole portion extending rearward from a lower edge of the face portion, and a crown portion extending rearward from an upper edge of the face portion,
comprises a reinforcing rib connected with the bottom of the rod and arranged on the back surface of the rod surface part,
the reinforcing rib extends from the bottom of the pole to a long round area surrounded by a first circle, a second circle and two line segments, wherein the radius of the first circle is 10mm, the centroid of the back surface of the pole face part or the projection point of the centroid of the front surface of the pole face part projected onto the back surface is taken as the center, the radius of the second circle is 10mm, the projection point of the gravity center of the golf club head projected onto the back surface is taken as the center, and the two line segments are parallel to each other and circumscribe the first circle and the second circle.
2. The iron golf club head of claim 1, wherein,
the transverse moment of inertia is 4000g cm 2 The above.
3. An iron golf club head according to claim 1 or 2, wherein,
the front surface of the face portion had an area of 36.7cm 2 The above.
4. An iron golf club head according to claim 1 or 2, wherein,
the upper end of the reinforcing rib is positioned in the oblong area.
5. The iron golf club head of claim 4, wherein,
the upper end portion of the reinforcing rib is located on an imaginary straight line passing through the center of the first circle and the center of the second circle, or is located above the imaginary straight line.
6. An iron golf club head according to claim 1 or 2, wherein,
the minimum distance between the center of the first circle and the reinforcing rib is equal to or less than the minimum distance between the center of the second circle and the reinforcing rib.
7. An iron golf club head according to claim 1 or 2, wherein,
the ribs slope from the toe side to the heel side from the sole toward the oblong region.
8. An iron golf club head according to claim 1 or 2, wherein,
the reinforcing bars are connected to the sole portion at a toe-side position.
9. An iron golf club head according to claim 1 or 2, wherein,
the height of the reinforcing ribs in the oblong region is 5mm or more.
10. An iron golf club head according to claim 1 or 2, wherein,
the sole portion has a groove extending in the toe-heel direction,
the reinforcing ribs are connected with the bottom surface and the side surface of the groove.
CN202111196410.4A 2020-10-15 2021-10-14 Iron golf club head Active CN114425146B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020174069A JP2022065468A (en) 2020-10-15 2020-10-15 Iron type golf club head
JP2020-174069 2020-10-15

Publications (2)

Publication Number Publication Date
CN114425146A CN114425146A (en) 2022-05-03
CN114425146B true CN114425146B (en) 2023-05-02

Family

ID=81311154

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202111196410.4A Active CN114425146B (en) 2020-10-15 2021-10-14 Iron golf club head
CN202122479967.0U Active CN216676899U (en) 2020-10-15 2021-10-14 Iron type golf club head

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202122479967.0U Active CN216676899U (en) 2020-10-15 2021-10-14 Iron type golf club head

Country Status (3)

Country Link
JP (1) JP2022065468A (en)
KR (1) KR102629705B1 (en)
CN (2) CN114425146B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022065468A (en) * 2020-10-15 2022-04-27 ヤマハ株式会社 Iron type golf club head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102794003A (en) * 2011-05-23 2012-11-28 普利司通运动株式会社 Golf club head
CN216676899U (en) * 2020-10-15 2022-06-07 雅马哈株式会社 Iron type golf club head

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3594515B2 (en) * 1999-07-16 2004-12-02 ブリヂストンスポーツ株式会社 Iron golf club head
JP3224026B2 (en) * 1999-08-23 2001-10-29 インターナショナル・ビジネス・マシーンズ・コーポレーション Computer with power off function
KR100482427B1 (en) * 2003-12-19 2005-04-14 박장원 Crosslinked foam which has inner-cavity structure, and process of forming thereof
CN106487188B (en) 2015-09-01 2021-04-20 德昌电机(深圳)有限公司 Single-phase permanent magnet motor and stator magnetic core thereof
US9993704B2 (en) * 2016-07-26 2018-06-12 Acushnet Company Striking face deflection structures in a golf club
JP3224026U (en) * 2019-08-16 2019-11-21 復盛應用科技股▲分▼有限公司 Golf club head with unequal thickness plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102794003A (en) * 2011-05-23 2012-11-28 普利司通运动株式会社 Golf club head
CN216676899U (en) * 2020-10-15 2022-06-07 雅马哈株式会社 Iron type golf club head

Also Published As

Publication number Publication date
JP2022065468A (en) 2022-04-27
CN216676899U (en) 2022-06-07
KR102629705B1 (en) 2024-01-29
KR20220050053A (en) 2022-04-22
CN114425146A (en) 2022-05-03

Similar Documents

Publication Publication Date Title
US7841953B2 (en) Golf club head having a bridge member
JP5989509B2 (en) Golf club head and golf club
JP5349006B2 (en) Golf club head
US20060217216A1 (en) Fairway wood with titanium face member
JP2004261451A (en) Golf club head
JP5698168B2 (en) Iron type golf club and iron type golf club head
JP2003102875A (en) Iron type golf set
CN114425146B (en) Iron golf club head
JP5785893B2 (en) Golf club head and golf club
KR102400750B1 (en) Hollow golf club head
JPH10258142A (en) Head of golf club
JP2000126337A (en) Golf club set of iron
JP5223844B2 (en) Golf club head
JP2011092242A (en) Golf club head
JP2000229138A (en) Golf club and its set
JP5107074B2 (en) Golf club
JP5525570B2 (en) Iron type golf club head
JP2001104520A (en) Golf club set
CN113262446A (en) Golf club head
JP2009178298A (en) Golf club
CN217526291U (en) Iron type golf club head
JP2019110974A (en) Golf club head
CN217448868U (en) Golf club head
CN221045427U (en) Iron golf club head
US20230201679A1 (en) Golf club head and set of golf clubs

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant