KR101444999B1 - Golf club head - Google Patents

Abstract

An object of the present invention is to provide a golf club head which can be expected to increase a flying angle larger than a loft angle through elastic deformation of a crown face and to reduce a back spin amount imparted to the ball to increase the flying distance. The sock surface forming member 17 forming the sole surface 11 and the crown surface forming member 18 forming the crown surface 12 pass through the white side from the toe side P1 of the head to the middle P4 of the heel side 30B, and 30C in the region of the side surface 14 to be within the range of 1/4 to 1/2 of the head height and when the ball is hit by the face surface 13, The central portion of the surface 12 is bended so as to swell so that the loft angle is temporarily increased to increase the throw angle and the back spin amount is reduced by the gear effect to increase the flying distance.

Description

Golf Club Head {GOLF CLUB HEAD}

The present invention relates to a golf club head, and more particularly, to a golf club head capable of reducing the amount of backspin of the ball when the ball is hit (making it suitable) and raising the throw angle to increase the distance.

In order to fly the golf ball farther, it is necessary not only to speed up the head speed but also to face the face face in a square area and to capture the ball in the sweet area, but the backspin amount of the ball and the throw angle are factors for increasing the distance.

For example, if the amount of backspin is extremely large, the ball will fly up (ballooning), and after reaching the peak, the ball will dive and lose the distance. This is also the case with respect to the launch angle, and if the launch angle is extremely large, the distance is lost by diving after reaching the peak in a short time. As described above, in order to increase the distance of the ball, it is also important to optimize the back spin amount and the throw angle.

Patent Document 1 discloses a golf club in which a crown face is made of a material having a low rigidity so as to deform the crown face at the time of hitting so that the face face can rotate backward and to reduce the back spin amount by the gear effect, Head is disclosed.

Japanese Patent Application Laid-Open No. 4-89071

However, the golf club head described in Patent Document 1 has a crown face portion which is formed on the inner side of a region called a crown face, which is low in rigidity and easy to bend. This portion is relatively easy to deform, It is difficult to obtain a deformation in a state in which the side face side is curled, and there is room for improvement in order to sufficiently deform it. In addition, since a resin material is used, there is a problem of strength in addition to low rigidity.

An object of the present invention is to provide a golf club head which elastically deforms a crown face so as to temporarily increase a loft angle of a face face when a ball is hit and secures a throw angle larger than a loft angle through elastic deformation of the crown face And to provide a golf club head capable of reducing the back spin amount given to the ball and increasing the flying distance by the synergistic effect of the throw angle and the back spin amount.

In order to achieve the above object, the present invention adopts the constitution described in the claims, and more specifically, it relates to a sole forming member for forming a sole surface, a crown surface forming member for forming a crown surface, And a face surface forming member positioned in front of the crown surface forming member to form a face surface; and a golf club head in which the respective forming members are joined to each other in a state where the hosel portion is positioned on the heel side of the crown surface,

The joining position of the solenoid forming member and the crown face forming member is set within a range of 1/4 to 1/2 of the head height in the region of the side face extending from the top side of the head to the middle of the heel side through the back side ,

The crown surface forming member has a thickness of at least 75% of 0.2 mm to 0.6 mm.

It is more preferable that the crown face forming member has a plate thickness of at least 75% at 0.4 mm to 0.6 mm.

In addition, it is preferable that an area of the crown-surface forming member is 85% to 115% of an area of the surface-forming member.

According to the present invention, in the region of the side surface, the joining position of the sole forming member and the crown face forming member is set within a range of 1/4 to 1/2 of the head height, that is, the crown face is secured So that the crown surface is warped due to the impact at the time of impact.

Therefore, due to warping (deformation) of the crown face, the upper part of the face surface shifts to the back side, and the loft angle temporarily increases to increase the launch angle, and the back spin amount decreases due to the gear effect.

In addition, by making the crown surface forming member have a thickness of 0.2 mm to 0.6 mm at 75% or more, ease of warping can be ensured. If it is less than 75%, the expected amount of warpage can not be secured. If it is less than 0.2 mm, there is a problem in terms of strength, such as cracking, and if it exceeds 0.6 mm, the amount of warping becomes small. The crown face forming member preferably has a relatively thick plate thickness on the outer peripheral portion (joined portion), for example, a plate thickness of 0.75 mm in order to join with the soffit forming member.

By setting the area of the crown-surface forming member to 85% to 115%, the crown is bent in a state in which the side surface is curled. If it is 85% or less, deformation of the periphery following the deformation of the crown surface is reduced. If it exceeds 115%, too much warpage will result in too large an angle of attack.

1 is a schematic plan view of a golf club head according to an embodiment;
2 is a front view of the golf club head.
FIG. 3 is a front view, (B) is a right side view, (C) is a left side view, and (D) is a rear view.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The golf club head 10 shown in Fig. 1 is a wood type hollow golf club called a so-called driver and includes a sole surface 11, a crown surface 12, a face surface 13 and a side surface 14, A hosel portion 15 is provided on the upper side of the heel.

The golf club head 10 is formed of titanium and the head portion excluding the hosel portion 15 is formed of three members of a soffit forming member 17, a crown facet forming member 18 and a face facet forming member 19 For example, by means of welding or the like. The dorsal surface forming member 17, the crown surface forming member 18 and the face surface forming member 19 are bonded to the hosel component 16 by means of welding or the like. The sole forming member 17 has a thickness of 0.8 mm to 0.9 mm in the present invention. The sole forming member 17 is connected to the sole surface 11 and to the outer circumferential region extending from the toe side to the heel side And the side face 14 and the crown face forming member 18 are joined to each other. 1 to 3, the respective joining portions between the sole formation member 17, the crown face formation member 18 and the face formation member 19 are shown by broken lines, When the outer ridgeline of the golf club head 10 and the joint portion overlap each other (P1 to P5 described later), such as a joint between the crown face forming members 18, a solid line indicating a ridge line is displayed instead of a dashed line indicating the joint portion .

That is, the portions of the upper surface of the side surface 14 and the outer surface of the crown surface forming member 18 are bonded to each other at bonding positions 30A to 30D (see FIG. 3) The face surface forming member 19 is bonded to the outer peripheral portion of the face surface forming member 19 at the front end side of the surface forming member 18. The toe side P1 is an end portion on the face side of the joining portion of the sole forming member 17 and the crown forming member 18 when the golf club head 10 is seen from the top side and the hosel side P0 is a crown (Heel side) of the joining portion of the face formation member 18 and the face formation member 19. The heel side P5 is an end on the face side of the joining portion of the sole forming member 17 and the crown face forming member 18 when the golf club head 10 is viewed from the heel side. P2 is a portion of the joint where the golf club head 10 can be seen when viewed from the top side and viewed from the back side and P3 and the middle portion P4 are portions of the joint that can be seen when viewed from the back side and from the heel side to be. The intermediate portion P4 is a portion of the joint portion on the back side of the heel side P5. P6 is an end of the joining portion of the sole forming member 17 and the face forming member 19 on the side of the hosel portion.

The joining positions 30A to 30D of the sole face forming member 17 and the crown face forming member 18 are expressed as if they are apparent ridges. Of the bonding positions 30A to 30D, 30A to 30C are the side surfaces 14 in the length from the top side P1 of the golf club head 10 to the middle portion P4 of the heel side through the back side (opposite to the face side) In the range of 1/4 to 1/2 of the height of the head. As will be described in more detail, the bonding position 30A in the toe side regions P1 to P2 is in the range of 1/4 to 1/2 of the head height H, as shown in Fig. 3 (A) , And the left and right ends are set at positions at the same height as the heights of the left and right ends, and the center portion is set at a position extending in a gentle curved shape at a position slightly lower than the height. The bonding position 30B in the white side regions P2 to P3 is set to be a substantially linear inclined line so that the toe side is the lowest and gradually increases toward the heel side. In the heel-side regions P3 to P5, substantially half regions P3 to P4 (30C) in the vicinity of the bag are set within a range of 1/4 to 1/2 of the height H, and substantially half regions P4 to P5 30D are set in a tilted state within a height exceeding 1/2. The position of the crown face forming member 18 with respect to the height H of the golf club head 10 at the position where the crown face forming member 18 is joined to the sole face forming member 17 is determined by the lie angle (for example, 64 degrees) of the golf club head 10 And is a position when the golf club head 10 is placed against the ground so as to be the set angle.

Next, an embodiment of a golf club head according to the present invention will be described together with a comparative example.

[Example 1]

[Club Specifications]

No. 1 wood (driver, lie angle: 64 degrees)

The area of the crown-faced member is 13,150 mm <

Area of the sole forming member 14,277mm2

Area of the crown-face forming member / area of the sole-face forming member 92%

Crown face plate thickness 0.6 mm (78% of crown face, the remaining 22% plate thickness 0.75 mm)

(The bonding positions 30A to 30C in Fig. 3 are in the range of 1/4 to 1/2) between the crown surface forming member and the sole surface forming member,

Sole forming member thickness 0.75 mm

Head loft angle 11 degrees

Head weight 179.5g

Head volume 460cc

Shaft for 2010inpresXClassic Driver (R Flex)

Grip for 2010inpresXClassic driver

Club length 46.25 inches

Club Gross Weight 275g

Balance C3

The golf club was mounted on a robot arm, set at a constant head speed (36.5 m / s), and subjected to five experiments to obtain the results. The results are shown in Table 1. The head speed in the table shows actual measured values at the time of hitting with the robot arm set at 36.5 m / s.

[Comparative Example 1]

[Club Specifications]

Area of the crown facet forming member 12,079mm2

Area of the sole forming member 15,310mm2

Area of the crown surface forming member / area of the sole surface forming member 79%

Crown face plate thickness 0.75㎜

30C to 30C is 1/4 to 1/2 or more from the position where the crown face forming member and the sole face forming member are bonded to each other, 2 (at least 1/2 of the head height on the toe side of the head in the area of the side surface from the toe side of the head through the white side to the middle of the heel side)

Sole forming member thickness 0.9 mm

The other features are the same as those of the first embodiment.

The golf club of Comparative Example 1 was mounted on a robot arm, and the same experiment as in Example 1 was conducted five times to obtain the results. The results are shown in Table 1.

As shown in Table 1, according to the present invention, the launch angle increased by an average of 0.5 degrees and the backspin amount decreased by an average of about 150 rpm. As a result, it was possible to achieve a distance of 1 yard and a total distance of 1.6 yards with a carry.

In the above table, the " carry " is the distance from the ball striking point to the first landing point of the ball, and then the distance until the ball rolls and stops becomes " run " ) &Quot; and " run " become " total ".

Next, the club specifications and the striking conditions were the same, and the distance when the plate thickness of the crown forming member was changed was obtained. This was experimented five times and the average was obtained. The results are shown in Table 2.

As is clear from Table 2, by reducing the plate thickness of the crown forming member, the total distance can be increased. This is presumed to be one of the results that the plate thickness of the crown forming member is made thin and the crown surface is elastically deformed appropriately, and a suitable throw angle is given by the gear effect.

The best configuration, method, and the like for carrying out the present invention are described above, but the present invention is not limited thereto.

Although the present invention has been particularly shown and described with respect to specific embodiments thereof, it will be understood by those skilled in the art that the present invention is not limited thereto and that various changes and modifications You can.

For example, in the above embodiment, a so-called driver is used, but it is also applicable to a so-called fairway wood or a golf club head of a type called utility. Further, although the present invention can be applied regardless of the size of the head volume of the golf club head, it is preferable that the present invention is applied to a golf club head having a head volume of 380cc to 470cc.

10: Golf club head
11: Sole
12: Crown face
13: face face
14: side face
15: Hoselite
17:
18: Crown face forming member
19: face face forming member
30A, 30B, 30C and 30D: joint positions

Claims (5)

A sole forming member for forming a sole surface,
A crown surface forming member for forming a crown surface,
And a face surface forming member positioned in front of the sole face forming member and the crown face forming member to form a face face,
A crown surface forming member and a face surface forming member are bonded to each other in a state where a hosel is positioned on a heel side of the crown surface,
The joining position of the sole forming member and the crown face forming member is set to be in the range of 1/4 to 1/2 of the height of the golf club head in the region of the side face from the top side of the golf club head to the middle of the heel side, / 2 < / RTI >
Wherein the crown faced member has a thickness of 0.2 mm to 0.6 mm at 75% or more,
Wherein a portion extending from the top side of the crown surface forming member to the middle of the heel side through the back side has a ridge only at the joining position. The method according to claim 1,
Wherein the crown face forming member has a thickness of at least 75 percent of 0.4 mm to 0.6 mm. The method according to claim 1,
The crown face forming member and the sole face forming member are joined to each other at an outer peripheral portion of the crown face forming member,
Wherein the plate thickness of the outer circumferential portion, which is a joining portion where the crown surface forming member is joined to the sole surface forming member, is thicker than 0.6 mm. The method of claim 3,
And the plate thickness of the joining portion of the crown face forming member with the sole face forming member is 0.75 mm. 4. The method according to any one of claims 1 to 3,
And the area of the crown face forming member is 85 to 115 percent of the area of the sole forming member.

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