JP3222914U - Golf club set comprising an elastomer element for ball speed control - Google Patents

Abstract

Provided is a golf club head in which a flight distance does not change so much even when it is hit off the core, and the flight distance itself does not decrease so much overall. A golf club head has a striking face 718 and a peripheral portion surrounding the striking face and extending rearward, the striking face being configured to strike a golf ball; And an opposite back surface, the back surface having a supported region. The golf club head further includes a cantilevered support arm 762 spaced from the back surface and extending from the periphery to the supported region, and a deformable element (elastomer element 702) disposed between the cantilevered support arm and the back surface. The deformable element has a front surface that contacts the back surface of the striking face and a back surface that contacts the cantilevered support arm. [Selection] Figure 7A

Description

  The present invention relates to a golf club set including an elastomer element for ball speed control. This application is related to U.S. Patent Application No. 16 / 027,077 (Hebereo et al.) Filed Jul. 3, 2018 relating to "Golf Club Set with Ball Speed Control Elastomer Element" Related to US patent application Ser. No. 15 / 220,122 (Morin et al., US Pat. No. 10,086,244) filed Jul. 26, 2016, relating to “Golf Club Set with Ball Speed Control Elastomer Element” To do.

  For golfers, the goal is to reduce the total number of swings required to complete a golf round, thereby reducing its overall score. To achieve that goal, the golfer should make the ball fly a similar distance when struck by the same golf club, and for some clubs the ball will fly a long distance It is generally desirable. For example, when a golfer misses a golf ball slightly, the golfer does not want the golf ball to fly significantly different distances. At the same time, even when a golfer hits a ball at a “sweet spot” of a golf club, the golfer does not always want a significantly reduced overall distance each time he hits the ball.

JP 2018-015565 A

  One non-limiting example of the present technology includes the following golf club, which includes: a striking face; a peripheral portion that surrounds the striking face and extends rearward; and the center of gravity of the golf club head A coordinate system centered on the y-axis extending perpendicular to the ground plane perpendicular to the ground plane when the golf club head is in the address position at a predetermined loft and lie, the heel of the golf club head An x-axis extending perpendicular to the y-axis and parallel to the striking face and a z-axis passing through the striking face perpendicular to the y-axis and the x-axis; the striking face strikes the golf ball And a rear surface opposite to the front surface; the rear surface of the striking face includes a support region; and a support spaced from the rear surface of the striking face. An arm, the support arm being oriented substantially parallel to the back surface of the striking face and extending from a peripheral portion toward the support region; disposed between the support arm and the back surface of the striking face A deformable element; the deformable element has a front surface in contact with the back surface of the striking face and a back surface in contact with the support arm; the perimeter of the front surface of the deformable element defines a support region The support area has a geometric center; the striking face has a plurality of score lines; the striking face has a heel reference plane extending parallel to the y-axis and the x-axis; The heel reference plane is offset by 1 millimeter from the score line in the heel side range towards the heel; the geometric center of the support area is measured parallel to the x-axis and is offset from the heel reference plane. The striking face has a striking face agency measured parallel to the x-axis from the heel reference plane to the most toe-side range of the front face surface of the striking face in the direction The support area offset ratio includes the value obtained by dividing the support area offset length by the striking face length and multiplying by 100%; the support area offset ratio is 40% or greater; Supported at one end of the support arm so as to be fixed only to the peripheral part; the deformable element comprises an elastomer; at least a part of the striking face has a thickness of 2.4 mm or less; The highest portion of the golf club head is located 35 mm or less above the ground plane, measured parallel to the y-axis; the center of gravity of the golf club head is measured parallel to the y-axis Located below 20mm above the ground.

  Other non-limiting examples of the present technology include the following golf club, which includes: a striking face; a peripheral portion surrounding the striking face and extending rearwardly; A coordinate system centered on the center of gravity; said coordinate system extending perpendicularly perpendicular to the ground plane when said golf club head is located at an address position with a predetermined loft and lie. An axis, an x-axis extending perpendicular to the y-axis and parallel to the striking face in the direction of the heel of the golf club head, a right angle to the y-axis and the x-axis, and the striking A z-axis extending through the face; the striking face has a front surface configured to strike a golf ball and a back surface opposite the front surface; over the striking face A back surface having a supported region; and further comprising a support arm spaced from the back surface of the striking face, the support arm extending from the periphery to the supported region; Cantilevered so as to be fixed to the periphery only at one end of the support arm; and further includes a deformable element disposed between the support arm and the back surface of the striking face; The enabling element has a front surface that contacts the back surface of the striking face and a back surface that contacts the support arm.

  In another non-limiting embodiment of the present technology, the perimeter of the front surface of the deformable element forms the supported region, the supported region has a geometric center, and the striking face includes a plurality of striking faces. The striking face has a heel standard plane extending parallel to the y-axis and the x-axis, and the heel standard plane is the heel direction from the most heel side boundary of the score line. The geometric center of the supported area is positioned on the toe side by a supported area offset length from the heel standard plane, measured parallel to the x-axis, and the striking face is A striking face length measured in parallel to the x-axis from the heel standard plane to a toe-side portion of the front surface of the striking face, and the golf club head comprises: The support region offset length has a supported region offset ratio multiplied by 100% and divided by the striking face length, the the supported region offset ratio is 40% or more.

  In another non-limiting example of the present technology, the highest portion of the support arm is located below 35 millimeters above the ground plane, measured parallel to the y-axis.

  In another non-limiting example of the present technology, the highest portion of the support arm is located no more than 30 millimeters above the ground plane, measured parallel to the y-axis.

In another non-limiting example of the present technology, the center of gravity of the golf club head is located below 20 millimeters above the ground plane, measured parallel to the y-axis, and the golf club head is 250 k? Mm < ² >. It has the above MOI? Y.

  In another non-limiting example of the present technology, at least a portion of the striking face has a thickness of 2.1 mm or less.

  In another non-limiting example of the present technology, the support arm is oriented parallel to the back surface of the striking face and has an arm centerline extending from the periphery toward the supported region along the center of the support arm. The support arm has an arm width, and the arm width decreases from the periphery toward the supported region along the arm center line.

  In another non-limiting example of the present technology, the support arm is oriented parallel to the back surface of the striking face and has an arm centerline extending from the periphery toward the supported region along the center of the support arm. The arm center line forms a predetermined angle with respect to the ground plane, and this angle is not less than 5 degrees and not more than 45 degrees.

  In another non-limiting example of the present technology, the support arm is oriented substantially parallel to the back surface of the striking face.

  In other non-limiting examples of the present technology, the deformable element comprises an elastomer.

  Other non-limiting examples of the present technology include the following golf club, which includes: a striking face; a peripheral portion surrounding the striking face and extending rearwardly; A coordinate system centered on the center of gravity; said coordinate system extending perpendicularly perpendicular to the ground plane when said golf club head is located at an address position with a predetermined loft and lie. An axis, an x-axis extending perpendicular to the y-axis and parallel to the striking face in the direction of the heel of the golf club head, a right angle to the y-axis and the x-axis, and the striking A z-axis extending through the face; the striking face has a front surface configured to strike a golf ball and a back surface opposite the front surface; over the striking face A back surface having a supported area; and a support arm spaced from the back surface of the striking face, the support arm extending from the periphery to the supported area; the support arm and the striking A deformable element disposed between the back surface of the face; the deformable element having a front surface in contact with the back surface of the striking face and a back surface in contact with the support arm. The perimeter of the front surface of the deformable element forms the supported area, the supported area has a geometric center, the hitting face has a plurality of score lines, and the hitting face is A heel standard plane extending parallel to the y-axis and the x-axis, and the heel standard plane is shifted by 1 mm in the heel direction from the most heel side boundary of the score line And the geometric center of the supported region is positioned toe side by a supported region offset length from the heel standard plane, measured parallel to the x-axis, and the striking face is the x- A striking face length measured from the heel standard plane to the most toe-side portion of the front surface of the striking face parallel to an axis, the golf club head having the supported region offset length as the striking face The supported region offset ratio is 100% divided by the length, and the supported region offset ratio is 40% or more.

  In another non-limiting example of the present technology, the support arm is cantilevered and thus secured to the periphery only at one end of the support arm.

  In another non-limiting example of the present technology, in another non-limiting example of the present technology, the highest portion of the support arm is measured parallel to the y-axis to face the ground surface. It is positioned above 35 mm or less.

  In another non-limiting example of the present technology, in another non-limiting example of the present technology, the highest portion of the support arm is measured parallel to the y-axis to face the ground surface. It is positioned 30 mm or less above.

In another non-limiting example of the present technology, the golf club head center of gravity is positioned equal to or below 20 mm above the ground plane when measured parallel to the y-axis, and the golf club head Has a MOI-Y of 250 kg-mm ² or more.

  In another non-limiting example of the present technology, the supported region offset ratio is 50% or more.

  In another non-limiting example of the present technology, the support arm is oriented parallel to the back surface of the striking face and has an arm centerline extending from the periphery to the supported region along the center of the support arm. The support arm has an arm width, and the arm width decreases from the peripheral portion toward the supported region along the arm center line.

  In another non-limiting example of the present technology, the support arm is oriented parallel to the back surface of the striking face and has an arm centerline extending from the periphery to the supported region along the center of the support arm. The arm center line forms an angle with respect to the ground plane, and this angle is not less than 5 degrees and not more than 45 degrees.

  The golf club head of claim 1, wherein in another non-limiting example of the present technology, the support arm is oriented substantially parallel to the back surface of the striking face.

  The summary described herein is provided to select and introduce ideas of the invention in a simplified form, which will be further described in the detailed description below. This summary is not intended to identify key or basic features of the subject matter described in the following utility model registration claims, nor is it intended to limit the scope of the subject matter .

  Non-limiting and non-exhaustive examples are described with reference to the following figures.

1 shows a cross-sectional view of a golf club head having an elastomeric element. 1 shows a cross-sectional view of a golf club head having an elastomeric element. 1A shows a perspective cross-sectional view of the golf club head shown in FIGS. 1A-1B. FIG. 1 shows a cross-sectional view of a golf club head having an elastomeric element and a striking face having a thick central portion. 1 shows a cross-sectional view of a golf club head having an elastomeric element and a striking face having a thick central portion. 1 shows a cross-sectional view of a golf club head having an elastomeric element and an adjustment mechanism for adjusting the compression of the elastomeric element. 1 shows a cross-sectional view of a golf club head having an elastomeric element and an adjustment mechanism for adjusting the compression of the elastomeric element. FIG. 3 shows a perspective view of another example of a golf club head having an elastomeric element and an adjustment mechanism for adjusting the compression of the elastomeric element. 4B shows a cross-sectional view of the golf club head of FIG. 4A. FIG. 3 shows a cross-sectional view of another example of a golf club having an elastomeric element and an adjustment mechanism for adjusting the compression of the elastomeric element. 2 shows a stress contour diagram of a golf club head that does not include an elastomeric element. 2 shows a stress contour diagram of a golf club head having an elastomeric element. 1 shows a front view of a golf club head. FIG. 6B is a side view of the toe side of the golf club head of FIG. 6A. FIG. 6B is a cross-sectional view of the golf club head of FIG. FIG. 6B is a perspective view of the golf club head of FIG. 6A oriented in a direction perpendicular to the striking face. FIG. 6B is a perspective view of the golf club head of FIG. 6A oriented in a direction perpendicular to the striking face including a support area. 1 shows a perspective view of a golf club head. FIG. 7B shows an additional perspective view of the golf club head of FIG. 7A. FIG. 7B shows a rear view of the golf club head of FIG. 7A. FIG. 7B is a cross-sectional view of the golf club head of FIG. 7C taken along the line BB. 7C is a cross-sectional view of the golf club head of FIG. FIG. 7D is a DD cross-sectional view of the golf club head of FIG. 7C. FIG. 7B is an additional cross-sectional view of the front of the golf club head of FIG. 7A, excluding the strike face. FIG. 9B shows a cross-sectional view of FIG. 9A with the deformable member removed. FIG. 7B is a perspective view of the golf club head of FIG. 7A oriented perpendicular to the striking face including the support area. .

  The technology described herein contemplates iron-type golf club heads that incorporate elastomeric elements to promote more uniform ball speed across the golf club's striking face. Traditional thin iron type golf clubs generally produce non-uniform launch rates across the striking face due to increased compliance at the geometric center of the striking face. For example, when a golf club strikes a golf ball, the striking face of the club bends and then pops forward to accelerate the golf ball from the striking face. Although such a design may increase the flight distance of the golf ball when struck at the center of the face, hitting off the center of the golf ball results in significant loss in the golf ball flight distance. In comparison, a very thick face causes a more uniform ball flight regardless of the strike position, but causes a significant loss in launch speed. The technology incorporates an elastomeric element between the rear portion of the hollow iron and the back surface of the striking face. Inclusion of the elastomeric element improves the uniformity of the launch speed across the strike face, although it will reduce the magnitude of the launch speed for hitting at the center of the face. In some examples, the compression of the elastomeric element between the rear portion and the striking face may also be adjustable so that when a golfer or golf club fitting specialist strikes a golf ball, the striking face Adjust the deflection of the.

  1A-1B show cross-sectional views of a golf club head 100 that includes an elastomeric element 102. FIG. 1C shows a perspective sectional view of the golf club head 100. 1A to 1C will be described simultaneously. Golf club head 100 includes a striking face 118 and a rear portion 112. A cavity 120 is formed between the striking face 118 and the rear portion 112. An elastomeric element 102 is disposed in the cavity 120 between the striking face 118 and the rear portion 112. The back surface of the elastomeric element 102 is held in place by a cradle 108. The cradle 108 is attached to the rear portion 112 of the golf club head 100, and the cradle 108 includes a recess 109 to accommodate the back portion of the elastomeric element 102. The lip of the cradle 108 prevents the elastomeric element 102 from slipping or otherwise misaligned. The elastomeric element 102 may have a generally frustoconical shape, as shown in FIGS. 1A-1B. In other examples, the elastomeric element 102 may have a cylindrical shape, a spherical shape, a rectangular parallelepiped shape, or a prism shape. The recess 109 of the cradle 108 is formed to substantially match the shape of the back surface of the elastomer element 102. The back surface of the elastomer element 102 is in contact with the inner wall of the recess 109 of the cradle 108. The cradle 108 may be welded or otherwise attached to the rear portion 112, or the cradle 108 may be formed during the casting or forging process as part of the rear portion 112. The rear portion 112 may also be machined to include the cradle 108.

  The front surface portion 103 of the elastomeric element 102 contacts the back surface 119 of the striking face 118. The front portion 103 of the elastomeric element 102 may be held in place on the back surface 119 of the striking face 118 by a locking mechanism. The flange 110 protrudes into the cavity 120 from the back surface 119 of the striking face 118. The flange 110 houses the front surface portion 103 of the elastomeric element 102 and substantially prevents the elastomeric element 102 from sliding along the back surface 119 of the striking face 118. The flange 110 may partially or completely surround the front surface portion 103 of the elastomeric element 102. Similar to the cradle 108, the flange 110 conforms to the shape of the front surface portion 103 of the elastomeric element 102 so that the surface of the front surface portion 103 of the elastomeric element 102 contacts the inner surface of the flange 110. Flange 110 may be welded to or otherwise attached to back surface 119 of striking face 118. The flange 110 may also be cast or forged during formation of the striking face 118. For example, if the striking face 118 is a face insert, the flange 110 may incorporate the flange 110 into the face insert during casting or casting. In other examples, the flange 110 and the striking face 118 may be machined from a thicker face plate. Alternative fixing structures other than the flange 110 may also be used. For example, two or more struts may be included on the back surface 119 of the striking face 118 around the periphery of the front portion 103 of the elastomeric element 102. As another example, an adhesive may be used to secure the elastomeric element 102 to the back surface 119 of the striking face 118. In other embodiments, a securing structure is not utilized and the elastomeric element 102 is held in place entirely by compression between the cradle 108 and the back surface 119 of the striking face 118.

  In the example shown in FIGS. 1A-1C, the elastomeric element 102 is located behind the approximate geometric center of the striking face 118. In a golf club with a traditional thin face, striking at the geometric center of the striking face 118 results in maximum displacement of the striking face 118, thus achieving the highest ball speed. Placing the elastomeric element 102 at the geometric center of the striking face 118 reduces the deflection of the striking face 118 at that point, resulting in a decrease in ball speed. However, the portion of the striking face 118 that is not backed by the elastomeric element 102 continues to deflect into the cavity 120, increasing the speed of the golf ball. In this way, a more uniform distribution of ball speed resulting from ball striking across the striking face 118 from heel to toe can be achieved. In other examples, the elastomeric element 102 may be located elsewhere in the golf club head 100.

  The elasticity of the elastomeric element 102 also affects the deflection of the striking face 118. For example, a material having a lower modulus allows further deflection of the striking face 118 and achieves a greater maximum ball speed, but with less uniformity. In contrast, a material with a higher modulus further prevents deflection of the striking face 118 and provides a more uniform ball speed, although only a lower maximum ball speed is achieved. With reference to Tables 2-3, various types of materials are discussed in further detail below.

  The golf club head 100 also includes a sole 105 with a sole channel 104 between the front sole portion 114 and the back sole portion 116. The sole channel 104 extends along the sole 105 of the golf club head 100 from a point close to the heel to a point close to the toe. Although depicted as a hollow channel, the sole channel 104 may be filled or spanned with plastic, rubber, polymer, or other material to prevent debris from entering the cavity 120. The sole channel 104 allows further deflection of the lower portion of the striking face 118. By allowing the lower portion of the striking face 118 to bend further, high ball speed is achieved from hitting the ball at the lower portion of the striking face 118, for example, from hitting the grass from the grass. Thus, the elastomeric element 102 and the sole channel 104 combine with each other to provide a uniform ball speed throughout the striking face 118 and increase the golf ball flight distance for turf hitting.

  2A-2B show a cross-sectional view of a golf club head 200 having an elastomeric element 202 and a striking face 218 with a thick central portion 222. The golf club head 200 is similar to the golf club head 100 discussed above with reference to FIGS. 1A-1C except that a thick portion 222 of the striking face 218 is utilized rather than the flange 110. A thick portion 222 of the striking face 218 protrudes into the cavity 220. The front surface portion 203 of the elastomeric element 202 contacts the back surface 219 of the thick portion 222. The back side of the elastomeric element 202 is housed within the cradle 208 by a recess 209, which is attached to the rear portion 212 and is substantially similar to the cradle 108 discussed above with reference to FIGS. 1A-1C. Due to the thickened portion 222 of the striking face 218, the elastomeric element 202 may be shorter in length than the elastomeric element 102 in FIGS. 1A-1C. Golf club head 200 also includes a sole channel 204 disposed between front sole portion 214 and back sole portion 216. Sole channel 204 also provides advantages similar to those of sole channel 104 described in FIGS. 1A-1C and may be filled with material or covered with material.

  3A-3B show a cross-sectional view of a golf club head 300 having an elastomeric element 302 and an adjustment mechanism for adjusting the compression of the elastomeric element 302. The golf club head 300 includes a striking face 318 and a rear portion 312, and a cavity 320 is formed between the rear portion 312 and the striking face 318. Similar to the golf club head 100 described above with reference to FIGS. 1A-1C, a flange 310 is disposed on the back surface 319 of the striking face 318, and the flange 310 houses the front portion 303 of the elastomeric element 302. In the example shown in FIGS. 3A to 3B, the elastomer element 302 has a substantially cylindrical shape. However, in other examples, the elastomeric element 302 may have a conical shape, a truncated cone shape, a spherical shape, a rectangular parallelepiped shape, or a prism shape.

  The golf club head 300 also includes an adjustment mechanism. The adjustment mechanism is configured to adjust the compression of the elastomeric element 302 against the back surface 319 of the striking face 318. In the embodiment shown in FIGS. 3A to 3B, the adjustment mechanism includes an adjustment unit accommodating unit 306 and an adjustment unit driving unit 330. The adjusting portion accommodating portion 306 may have a structure having a through hole to the cavity 320, and the adjusting portion driving portion 330 may be a threaded part or a screw as illustrated. The through hole of the adjuster receiving portion 306 includes a threaded inner surface for receiving the threaded component 330. The adjuster receiving portion 306 may be formed as part of the forging or casting process of the rear portion 312 or may be formed by machining and tapping following the forging and casting process. The threaded component 330 includes an interface 334 such as a recess that contacts or houses the back surface of the elastomeric element 302. The threaded component 330 also includes a screw drive 332 that is at least partially exposed to the exterior of the golf club head 300 so that the golfer can access the screw drive 332. Yes. When the threaded part 330 is rotated via the screw drive 332, for example by a screw driver, an Allen wrench, or a torque wrench, the threaded part 330 is placed inside or outside the cavity 320. Moving. In some examples, an interface 334 that contacts or houses the back of the elastomeric element 302 is lubricated so that when the threaded part 330 is rotated, the elastomeric element 302 twists. Or it is designed to prevent rotation. As the threaded part 330 moves further within the cavity 320, the compression of the elastomeric element 302 against the back surface 319 of the striking face 318 increases, thereby changing the performance of the elastomeric element 302.

  The higher compression of the elastomeric element 302 against the back surface 319 of the striking face 318 further limits the deflection of the striking face 318. Secondly, further limitations on deflection cause a more uniform ball speed across the striking face 318. However, the deflection limitation also reduces the maximum ball speed from the center of the striking face 318. By making the compression of the elastomeric element 302 adjustable with an adjustment mechanism, a golfer or golf club fitting specialist may adjust the compression to suit the golfer's specific needs. For example, a golfer who desires a further maximum distance but does not require uniform ball speed throughout the striking face 318 can reduce the default compression of the elastomeric element 302 by loosening the threaded part 330. In contrast, a golfer who desires ball speed across the striking face 318 can tighten the threaded part 330 to increase the default compression of the elastomeric element 302.

  Although the adjustment mechanism is shown in FIGS. 3A-3B to include a threaded part 330 and a threaded through hole, other adjustment mechanisms may be used to provide an elastomer for the back surface of the striking face 318. The compression of element 302 can be adjusted. For example, the adjustment mechanism may include a lever, and rotation of the lever may change the compression of the elastomeric element 302. The adjustment mechanism may also include a button that can be depressed to directly increase the compression of the elastomeric element 302. Other types of adjustment mechanisms may also be used.

  The golf club head 300 also includes a sole channel 304, similar to the sole channel 104 described above with reference to FIGS. 1A-1C, between the front sole portion 314 and the back sole portion 316. Sole channel 304 also provides similar advantages to sole channel 104 and may be filled or covered with material.

  Golf club head 300 may also be manufactured or sold as a kit. In the illustrated example where the adjustment mechanism is a threaded part 330 such as a screw, the kit may include a plurality of threaded parts 330. Each of the threaded parts 330 may have a different weight so that the golfer can select a desired weight. For example, one golfer may prefer an overall lighter weight for an iron head, while another golfer may prefer a heavier weight. The plurality of threaded parts 330 may also be configured to distribute the weight of each threaded part 330 along its length, if desired. The plurality of threaded parts 330 may also vary in length. By varying the length, each of the threaded parts 330 may have a maximum compression that can be applied to the elastomeric element 302. For example, if the threaded part 330 is short, it may not be possible to apply a large force to the elastomeric element 302 compared to the longer one, depending on the configuration of the adjuster housing 306. The kit may also include a torque wrench for attaching the threaded component 330 to the adjuster housing 306. The torque wrench may include preset settings that correspond to different compression or performance levels.

  FIG. 4A shows a perspective view of another example of a golf club head 400A having an elastomeric element 402 and an adjustment mechanism for adjusting the compression of the elastomeric element 402. FIG. FIG. 4B shows a cross-sectional view of the golf club head 400A. The golf club head 400A includes a striking face 418 and a rear portion 412, and a cavity 420 is formed therebetween. Similar to the adjustment mechanism of FIGS. 3A and 3B, the adjustment mechanism of the golf club head 400 </ b> A includes an adjustment portion housing portion 406 and an adjustment portion drive portion 430. In the example shown in the drawing, the adjustment unit accommodating portion 406 has a structure having a threaded through hole for accommodating the adjustment unit driving unit 430, and the adjustment unit driving unit 430 is a screw. In some embodiments, the adjuster receiving portion 406 may be formed by a threaded through-hole through the rear portion 412 without requiring additional structure.

  The tip of the screw 430 is in contact with the cradle 408A that holds the back surface of the elastomer element 402. As the screw 430 is rotated, the lateral movement of the screw 430 moves the cradle 408A closer or further away. Accordingly, in some examples, screw 430 extends substantially perpendicular to back surface 419 of striking face 418. Because cradle 408A holds the back surface of elastomer element 402, movement of cradle 408A changes the compression of elastomer element 402 against back surface 419 of striking face 418. In this manner, compression of the elastomeric element 402 may be adjusted by rotating the screw 430 via the screw drive 432, which is threaded in the golf club head 300 shown in FIGS. 3A-3B. This is the same as the operation of the component 330.

  FIG. 4C shows a cross-sectional view of another example of a golf club head 400C having an elastomeric element 402 and an adjustment mechanism for adjusting the compression of the elastomeric element 402. Golf club head 400C is substantially similar to golf club head 400A shown in FIGS. 4A-4C, except that golf club head 400C has a relatively small cradle (eg, in FIGS. 4A-4B having a depth d). A depth D greater than the depth of the cradle 408B). The larger cradle 408C contains more elastomer elements 402 than the smaller cradle. By enclosing a larger portion of the elastomeric element 402, the cradle 408C further limits deformation of the elastomeric element 402 when the golf ball is struck by the golf club head 400C. Limiting the deformation of the elastomeric element 402 also limits the potential maximum deflection of the striking face 418, thus reducing the maximum ball speed of the golf club head 400C while increasing speed uniformity across the striking face 418. obtain. Large cradle 408C does not contact back surface 419 of striking face 418 at its maximum deflection. The cradle 408C itself can be made of the same material as the rear portion 412, such as steel. Cradle 408C may also be made of titanium, composite material, ceramic, or various other materials.

  The size of the cradle 408C may be selected based on desired ball speed characteristics. For example, cradle 408C may surround about 25% or more of the volume of elastomeric element 402, as shown in FIG. In other examples, cradle 408C may surround approximately 25% to 50% of the volume of elastomeric element 402. In yet other examples, cradle 408C may surround about 10% to 25% or less than about 10% of the volume of elastomeric element 402. In yet another example, cradle 408C may surround more than 50% of the volume of elastomeric element 402. For the portion of the elastomeric element 402 surrounded by the cradle 408C, substantially the entire circumference of that portion of the elastomeric element 402 may contact the inner surface of the recess 409 of the cradle 408C.

  The connection between the cradle 408C and the adjuster drive 430 can also be seen more clearly in FIG. 4C. The tip of the adjustment unit driving unit 430 may be a flat surface and contacts the back surface 407 of the cradle 408C. Therefore, when the adjustment unit driving unit 430 moves into the cavity 420, the cradle 408C and the elastomer element 402 are pushed toward the striking face 418. Conversely, when the adjustment unit driving unit 430 is retracted from the cavity 420, the cradle 408 </ b> C maintains contact with the adjustment unit driving unit 430 by the force applied by the compression of the elastomer element 402. In some embodiments, the tip surface of screw 430 and / or the back surface of cradle 408C may be lubricated to prevent twisting of cradle 408C. In another example, the tip of the adjustment unit driving unit 430 may be attached to the cradle 408C so that the cradle 408C is twisted with the rotation of the adjustment unit driving unit 430. In such embodiments, the elastomeric element 402 can be substantially cylindrical, conical, or spherical. In another example, the back surface 419 of the striking face 418 and / or the front surface of the elastomeric element 402 that is in contact with the back surface 419 of the striking face 418 may be lubricated so that the back surface of the striking face 418 is The elastomeric element 402 can be rotated relative to the surface 419.

  Although golf club heads 400A and 400C use a continuous sole 414 instead of a sole channel like golf club head 300 of FIGS. 3A and 3B as shown, other embodiments of golf club heads 400A and 400C are shown. A sole channel may be included. In addition, golf club heads 400A and 400C may also be sold as kits with multiple screws and / or torque wrenches, similar to the kit described above for golf club head 300. An additional back plate may be added to the rear, but some of the screws may be left exposed for adjustment.

表１の結果から、エラストマーを有するゴルフクラブヘッド（例４）は、フェースの中心から比較的高いボールスピードを達成し、その一方でゴルフクラブのトウまたはヒールの近くでの打撃からのボール速度の損失が少ない。 The simulation results of the different types of golf club heads further demonstrate the uniformity of ball speed across the face of the golf club head that includes elastomeric elements. Table 1 shows that for several different exemplary golf club heads, the ball speed across the face of the golf club head is maintained. Example 1 is a baseline hollow iron with a face thickness of 2.1 mm with a sole channel. Example 2 is a hollow iron having a 2.1 mm face with a rigid rod extending from the rear to the striking face, which also includes a sole channel. Example 3 is a hollow iron with a thick center (6.1 mm) and thin perimeter (2.1 mm) striking face, which also has a sole channel. Example 4 is a golf club head having an elastomeric element similar to the golf club head 100 shown in FIGS. 1A-1C. The “center” row shows the ball speed resulting from the hit at the center of the golf club head, and the “1/2” heel ”row shows the ball speed from a half inch hit from the center of the club head to the heel. Indicates loss. The "1/2" toe "line shows the loss of ball speed from hitting at half an inch from the center of the club head to the toe. All values in Table 1 are miles per hour (mph).

From the results in Table 1, a golf club head having an elastomer (Example 4) achieves a relatively high ball speed from the center of the face, while ball speed from hitting near the toe or heel of the golf club. There is little loss.

表２の結果から、エラストマー要素の材料の選択はゴルフクラブの性能を微調整するために使用することができる。表２に列挙された材料のいずれも、本技術で使用されるエラストマー要素を形成するのに使用するのに許容可できる。 Furthermore, as noted above, the type of material utilized for any of the elastomeric elements discussed here affects the displacement of the striking face. For example, an elastomeric element having a higher elastic modulus resists striking face compression and thus striking face deflection, resulting in a lower ball speed. For example, for a golf club head similar to golf club head 400A, Table 2 shows the ball speed achieved by using materials with different elastic properties. All ball velocities are the result of hitting in the center of the face.

From the results in Table 2, the choice of material for the elastomeric element can be used to fine tune the performance of the golf club. Any of the materials listed in Table 2 are acceptable for use in forming the elastomeric elements used in the present technology.

表３の結果から、より高い弾性率を有する材料は打撃フェース全体にわたってボール速度を良好に保持するけれども、フェースの中心での衝撃に対して最大ボール速度を失う。いくつかの用途では、約４〜約１５ＧＰａのエラストマー要素の弾性率の範囲を使用することができる。他の用途では、約１〜約４０または約５０ＧＰａのエラストマー要素の弾性率の範囲を使用することができる。 Different types of materials also have an impact on maintaining ball speed across the striking face. For example, for a golf club head similar to golf club head 400A, Table 3 shows the ball speed achieved over the striking surface from heel to toe for the different materials used as the elastomeric element. The materials referenced in Table 3 are the same materials as in Table 2. All rates in Table 3 are mph.

From the results in Table 3, a material with a higher elastic modulus maintains a good ball speed throughout the striking face, but loses the maximum ball speed upon impact at the center of the face. In some applications, a modulus range of elastomeric elements from about 4 to about 15 GPa can be used. In other applications, a range of elastic modulus of the elastomer element from about 1 to about 40 or about 50 GPa can be used.

  As described above with reference to FIGS. 4A-4C, the size of the cradle can also affect the ball speed. For an elastomeric element made of 13 GPa material with a smaller cradle, such as cradle 408A of FIGS. 4A-4B, about 0.2 mph relative to the center impact compared to the same club without the elastomeric element. Loss is observed. In the case of an elastomeric element made from 13 GPa material with a larger cradle about 5 mm deep, like the cradle 408C in FIG. 4C, about 0. A 4 mph loss is observed. In the case of an elastomeric element made of 0.4 GPa material with a similar larger cradle, only about 0.2 mph loss is observed for the center impact compared to the same club without the elastomeric element. .

San Diego Plastics, Inc., National City, California offers several plastics with elastic modulus ranging from 2.6 GPa to 13 GPa, all of which are acceptable for use. These plastics also have an acceptable yield strength for use with the golf club heads discussed herein. Table 4 shows some materials provided by San Diego Plastics and their respective elastic modulus and yield strength values.

  The inclusion of an elastomeric element also has the benefit of increasing the durability of the club face by reducing the stress value produced by the striking face surface upon impact with the golf ball. FIG. 5A shows a stress contour diagram of a golf club head 500A that does not include an elastomeric element. FIG. 5B shows a stress contour diagram for a golf club head 500B having an elastomeric element. In golf club head 500A, the von Mises stress at the center of face 502A is about 68% of the maximum von Mises stress generated at bottom face edge 504A. Without the elastomeric element, the von Mises stress level is high, indicating that the club face may be susceptible to breakage and / or premature degradation. In the golf club head 500B, in the case of an elastomer element having an elastic modulus of 0.41 GPa, the von Mises stress of the face near the edge of the elastomer element 502B is reduced by about 16%, and the maximum von Mises stress generated at the bottom face edge 504B is reduced. Decrease by about 18%. These von Mises stresses are still relatively high, but are significantly reduced over those of the golf club head 500A. In golf club head 500B having an elastomeric element with an elastic modulus of about 13 GPa, the von Mises stress on the face near the edge of elastomeric element 502B is reduced by about 50% and the maximum von Mises stress generated at bottom face edge 504B is about 56%. %is decreasing. Such von Mises stress values are indicative of a more durable golf club head that may be smaller and less likely to fail.

  6A-6E show a golf club head 600 having an elastomeric element 602. FIG. FIG. 6A shows a front view of the golf club head 600. FIG. 6B shows a side view of the toe side of the golf club head 600 of FIG. 6A. FIG. 6C shows an AA cross-sectional view of the golf club head 600 of FIG. 6A. FIG. 6D shows a perspective view of the golf club head 600 of FIG. 6A positioned at a right angle to the striking face 618. FIG. 6E shows a perspective view of the golf club head 600 of FIG. 6A positioned at a right angle to a striking face 618 that includes a supported region 642. Golf club head 600 includes a striking face 618 configured to strike a ball, a sole 605 disposed at the bottom of golf club head 600, and a rear portion 612.

  As shown in FIGS. 6A and 6B, the golf club head 600 includes a coordinate system centered on the center of gravity (CG) of the golf club head 600. This coordinate system includes a y-axis that extends perpendicular to the ground at a right angle when the head 600 is positioned at an address position with a predetermined lie and loft α. The coordinate system includes an x-axis that is perpendicular to the y-axis and parallel to the striking face 618 and extends toward the heel of the golf club head 600. The coordinate system includes a z-axis that is perpendicular to the y-axis and the x-axis and extends through the striking face 618. Golf club head 600 has a rotational moment of inertia (MOI-Y) about the y-axis, which is a value representing the resistance of the golf club head to angular acceleration about the y-axis.

  Elastomeric element 602 is disposed between striking face 618 and rear portion 612. The striking face 618 includes a back surface 619. The front surface 603 of the elastomeric element 602 contacts the back surface 619 of the striking face 618. As shown in FIGS. 6C and 6E, the striking face 618 includes a supported region 642, ie, a portion of the back surface 619 supported by the elastomeric element 602, which is defined as the region inside the supported region boundary 640. This supported region boundary is defined by the outer extent of the front portion 603 of the elastomeric element 602 that contacts the back surface 619 of the striking face 618. The supported region 642 is indicated by hatching in FIG. 6E. Although the supported region 642 is not normally visible from the front of the golf club head 600, it is added for the purpose of explanation.

  The striking face 618 includes a striking face area 652, which is defined as the area inside the striking face perimeter 650 as shown in FIG. 6D. As shown in FIG. 6C, the perimeter of the striking face is defined by an upper limit 654 and a lower limit 656. Upper limit 654 is located at the intersection of a substantially flat back surface 619 and an upper radius 655 that extends to the top line of golf club head 600. Lower limit 656 is located at the intersection of a substantially flat back surface 619 and a lower radius 657 that extends to the sole 605 of golf club head 600. The perimeter of the hitting face is similarly defined at the toe (not shown in the cross-sectional view) of the golf club head 600 (658). The heel portion around the striking face is defined by a plane 659 that extends parallel to the y-axis and the x-axis and extends from the most heel-side range of the score line 660 formed on the striking face 618 to the heel. It is shifted 1 millimeter (mm). In FIG. 6D, the hitting face area 652 is shown hatched. The perimeters 654, 656 around the striking face are projected onto the striking face 618 for ease of illustration and understanding.

A plurality of golf club heads very similar to the golf club head 600 described herein can be included in the set, each golf club head having a different loft α. Each golf club head may also have additional varying features, which may include, for example, MOI? Y, hitting face area, supported area area, and unsupported face percentage. The unsupported face percentage is calculated by dividing the area of the supported area by the area of the hitting face, multiplying by 100%, and subtracting it from 100%. An example of a set of iron type golf club heads is included in Table 5 below. The set in Table 5 includes 21, 24, 27, and 30 lofts. Other sets may include a greater number of golf club heads and / or a wider range of loft α values, or a smaller number of golf club heads and / or a smaller range of loft α values. Further, the set may include one or more golf club heads that include an elastomeric element and one or more golf club heads that do not include an elastomeric element.

Examples of additional example iron club head sets are included in Table 6 below.

  If all other characteristics are kept constant, the higher the MOI? Y value, the higher the off-center hit ball speed. For clubs with a small MOI-Y, the greater the unsupported face percentage, the less the off-center ball speed reduction. By supporting the face with a smaller percentage, more faces can deflect during impact, increasing the speed of off-center balls. Thus, in the inventive golf club set described in Table 5 above, MOI? Y increases through the set as loft α increases and the unsupported face percentage decreases through the set as loft α increases. . This relationship provides consistency in off-center ball speed through a set of golf clubs.

  The set of golf clubs may include a first golf club head having a loft of 20 degrees to 24 degrees, and a second golf club head having a loft of 28 degrees to 32 degrees. In one embodiment, the first golf club head has a larger unsupported face percentage than the second golf club head, and the first golf club head has a lower MOI? Y than the second golf club head. You can configure the set.

More specific features of the embodiments described herein are described below. In some embodiments, the area of the supported region may be greater than 30 mm ² . In some embodiments, the area of the supported region may be greater than 40 mm ² . In some embodiments, the area of the supported region may be greater than 60 mm ² . In some embodiments, the area of the supported region may be greater than 65 mm ² . In some embodiments, the area of the supported region may be greater than 70 mm ² . In some embodiments, the area of the supported region may be greater than 73 mm ² .

In some embodiments, the area of the supported region may be less than 140 mm ² . In some embodiments, the area of the supported region may be less than 1300 mm ² . In some embodiments, the area of the supported region may be less than 120 mm ² . In some embodiments, the area of the supported region may be less than 110 mm ² . In some embodiments, the area of the supported region may be less than 100 mm ² . In some embodiments, the area of the supported region may be less than 90 mm ² . . In some embodiments, the area of the supported region may be less than 85 mm ² . In some embodiments, the area of the supported region may be less than 80 mm ² . In some embodiments, the area of the supported region may be less than 75 mm ² .

  In some embodiments, the unsupported face percentage is greater than 70%. In some embodiments, the unsupported face percentage is greater than 75%. In some embodiments, the unsupported face percentage is greater than 80%. In some embodiments, the unsupported face percentage is greater than 85%. In some embodiments, the unsupported face percentage is greater than 90%. In some embodiments, the unsupported face percentage is greater than 95%. In some embodiments, the unsupported face percentage is greater than 96%. In some embodiments, the unsupported face percentage is greater than 97%.

  In some embodiments, the unsupported face percentage is less than 99.75%. In some embodiments, the unsupported face percentage is less than 99.50%. In some embodiments, the unsupported face percentage is less than 99.25%. In some embodiments, the unsupported face percentage is less than 99.00%. In some embodiments, the unsupported face percentage is less than 98.75%. In some embodiments, the unsupported face percentage is less than 98.50%. In some embodiments, the unsupported face percentage is less than 98.25%. In some embodiments, the unsupported face percentage is less than 98.00%. In some embodiments, the unsupported face percentage is less than 97.75%. In some embodiments, the unsupported face percentage is less than 97.50%. In some embodiments, the unsupported face percentage is less than 97.25%. In some embodiments, the unsupported face percentage is less than 97.00%.

  FIGS. 7A-10 illustrate a golf club head 700 having an elastomeric element 702. FIG. 7A shows a perspective view of the golf club head 700. FIG. 7B shows an additional perspective view of the golf club head 700 of FIG. 7A. FIG. 7C shows a rear view of the golf club head 700 of FIG. 7A. FIG. 8A shows a BB cross-sectional view of the golf club head 700 of FIG. 7C. FIG. 8B shows a C-C cross-sectional view of the golf club head 700 of FIG. 7C. FIG. 8C shows a DD cross section D of the golf club head 700 of FIG. 7C. FIG. 9A shows an additional perspective view of the front of the golf club head 700 of FIG. 7A, with the striking face removed. FIG. 9B shows a cross-sectional view of FIG. 9A with the elastomeric element removed. FIG. 10 shows a perspective view of the golf club head 700 of FIG. 7A, which is oriented at a right angle to a striking face 718 that includes a supported region 742. Although the golf club head 700 shown in FIGS. 7A-10 is an iron type cavity back golf club, it is noted that the devices described herein are equally applicable to other types of golf club heads. I want.

  Golf club head 700 includes a deformable member 702 disposed between striking face 718 and rear portion 712. In one embodiment, the deformable member 702 is formed from an elastomer. The front surface 703 of the elastomeric element 702 contacts the back surface 719 of the striking face 718. The striking face 718 includes a supported region 742, that is, the portion of the back surface 719 that is supported by the elastomeric element 702, which is outside the front portion 703 of the elastomeric element 702 that is in contact with the back surface 719 of the striking face 718. It is defined as the area inside the supported area perimeter 740 defined by the area. Although the supported region 742 will normally not be visible from the front of the golf club head 700, FIG. 10 has been added for convenience of explanation.

  The golf club head 700 shown in FIGS. 7A to 10 has a cavity back structure and includes a peripheral portion 701 that surrounds the striking face 718 and extends rearward. The peripheral portion 701 includes a sole 705, a toe 706, and a top line 707. The peripheral portion 701 may include a weight pad 708W. Golf club head 700 also includes a rear portion 712 configured to support elastomeric element 702.

  The rear part 712 includes a cantilevered support arm 762 fixed to the peripheral part 701. The support arm 762 can include a cradle 708 configured to hold the elastomeric element 702 in place. The cradle 708 can include a lip 709 configured to position the elastomeric element 702 relative to the striking face 718 on the cradle 708. The lip 709 can surround a portion of the elastomeric element 702. Further, an adhesive may be used between the elastomer and cradle 708 to secure the elastomeric element 702 to the cradle 708.

  The support arm 762 extends from the weight pad 708 </ b> W located at the intersection of the sole 705 and the toe 706 in the peripheral portion 701 toward the supported region 742. Support arm 762 is oriented substantially parallel to back surface 719 of striking face 718. The support arm 762 can include a rib 764 for increasing the rigidity of the support arm 762. The ribs 764 can extend rearward from the support arm 762 substantially perpendicular to the back surface 719 of the striking face 718. The advantage of the cantilevered support arm 762 is that it achieves a lower CG height than an alternative beam design such as the embodiment shown in FIG. 4A where both ends are supported by the perimeter.

  To provide a low CG height, the support arm 762 is cantilevered, which means that it is only fixed to the periphery 701 at one end of the support arm 762. The support arm is such that the distance H between the highest portion of the support arm 762 and the ground plane GP when the golf club head 700 is positioned at the address position is minimized as shown in FIG. It is designed to be positioned at the optimum position. In one embodiment, H is 50 mm or less. In other embodiments, H is less than 45 mm. In another embodiment, H is 40 mm or less. In another embodiment, H is 35 mm or less. In another embodiment, H is 30 mm or less. In another embodiment, H is 29 mm or less. In another embodiment, H is 28 mm or less.

  In one example, the golf club head 700 can have a CG height CGH of 25 mm or less. In other examples, the golf club head 700 can have a CG height CGH of 24 mm or less. In other examples, the golf club head 700 can have a CG height CGH of 23 mm or less. In other examples, the golf club head 700 can have a CG height CGH of 22 mm or less. In other examples, the golf club head 700 can have a CG height CGH of 21 mm or less. In other examples, the golf club head 700 can have a CG height CGH of 20 mm or less. In other examples, the golf club head 700 can have a CG height CGH of 19 mm or less. In other examples, the golf club head 700 can have a CG height CGH of 18 mm or less.

Another advantage of the illustrated support arm 762 is that it provides a high MOI? Y due to its orientation. By concentrating the mass at the heel end and toe end of the golf club head 700, the MOI-Y can be increased. The support arm 762 is angled to concentrate most of its mass near the toe 706 and increases the MOI? Y compared to the more centrally located rear portion of the golf club head 700. In one embodiment, MOI? Y of the golf club head 700, is 200 kg? Mm ² or more. In another embodiment, the MOI-Y of the golf club head 700 is 210 kg-mm ² or more. In another embodiment, the MOI-Y of the golf club head 700 is 220 kg-mm ² or more. In another embodiment, the MOI-Y of the golf club head 700 is 230 kg-mm ² or more. In another embodiment, the MOI-Y of the golf club head 700 is 240 kg-mm ² or more. In another embodiment, the MOI-Y of the golf club head 700 is 250 kg-mm 2 or more. In another embodiment, the MOI-Y of the golf club head 700 is 260 kg-mm ² or more. In another embodiment, the MOI-Y of the golf club head 700 is 270 kg-mm ² or more.

  The support arm 762 can include an arm centerline CL, as shown in FIG. 8A, which is oriented parallel to the back surface 719 of the striking face 718 and from the periphery 701 along the center of the support arm 762. It extends toward the supported region 742. The angle α is measured between the ground plane GP and the center line CL. In one embodiment, the angle α is not less than 5 degrees and not more than 45 degrees. In another embodiment, the angle α is not less than 10 degrees and not more than 40 degrees. In another embodiment, the angle α is not less than 15 degrees and not more than 35 degrees. In another embodiment, the angle α is not less than 20 degrees and not more than 30 degrees. In another embodiment, the angle α is not less than 23 degrees and not more than 28 degrees.

  The support arm 762 can have an arm width AW measured perpendicular to the arm centerline CL and parallel to the back surface 719 of the striking face 718. The arm width AW can vary along the length of the support arm 762. In an embodiment, the arm width of at least a part of the support arm is 6 mm or more. In another embodiment, the arm width of at least a portion of the support arm is 8 mm or more. In another embodiment, the arm width of at least a portion of the support arm is 10 mm or more.

  The support arm 762 can have an arm thickness AT measured perpendicular to the back surface 719 of the striking face 718. The arm thickness AT can vary along the length of the support arm 762. In one embodiment, the arm thickness AT of at least a portion of the support arm is 2 mm or more. In another embodiment, the arm thickness AT of at least a portion of the support arm is 3 mm or more. In another embodiment, the arm thickness AT of at least a part of the support arm is 4 mm or more. In another embodiment, the arm thickness AT of at least a portion of the support arm is 5 mm or more. In another embodiment, the arm thickness AT of at least a portion of the support arm is 6 mm or more.

  The ribs 764 of the support arm 762 can have a rib width RW measured perpendicular to the arm centerline CL and parallel to the back surface 719 of the striking face 718. The rib width RW can vary along the length of the rib. In one embodiment, the rib width RW of at least a part of the ribs is 1 mm or more. In another embodiment, the rib width RW of at least a part of the ribs is 2 mm or more. In another embodiment, the rib width RW of at least a part of the ribs is 3 mm or more. In another embodiment, the rib width RW of at least a part of the ribs is 4 mm or more.

  The ribs 764 of the support arm 762 can have a rib thickness RT measured perpendicular to the back surface 719 of the striking face 718. The rib thickness RT can vary along the length of the rib. In one embodiment, the rib thickness RT of at least a portion of the rib is 2 mm or more. In another embodiment, the rib thickness RT of at least some of the ribs is 3 mm or more. In another embodiment, the rib thickness RT of at least some of the ribs is 4 mm or more. In another embodiment, the rib thickness RT of at least some of the ribs is 5 mm or more. In another embodiment, the rib thickness RT of at least some of the ribs is 6 mm or more.

  As shown in FIG. 10, the supported region 742 is positioned on the back surface 719 of the striking face 718. The striking face heel reference surface 759 extends parallel to the y-axis and the x-axis, and is positioned 1 mm away from the heel side of the score line 760 formed on the striking face 718 toward the heel. The geometric center 743 of the supported region 742 is toe direction from the striking face heel reference surface 759 measured parallel to the ground plane GP and parallel to the striking face 718 when the golf club head 700 is in the address position. Are shifted by the supported region offset length SROL. In one embodiment, the supported region offset length SROL is 20 mm or more. In another embodiment, the supported region offset length SROL is 22 mm or more. In another embodiment, the supported region offset length SROL is 24 mm or more. In another embodiment, the supported region offset length SROL is 26 mm or greater. In another embodiment, the supported region offset length SROL is greater than or equal to 27 mm. In another embodiment, the supported region offset length SROL is 28 mm or greater.

  The striking face length SFL is measured in parallel to the ground plane GP and parallel to the striking face 718 from the striking face heel reference surface 759 to the position closest to the toe side of the striking face 718 when the golf club head 700 is disposed at the address position. Is done. In one embodiment, the striking face length SFL is 60 mm or more. In another embodiment, the striking face length SFL is 65 mm or more. In another embodiment, the striking face length SFL is 70 mm or more. In another embodiment, the striking face length SFL is 71 mm or more. In another embodiment, the striking face length SFL is 72 mm or more. In another embodiment, the hitting face length SFL is 73 mm or more. In another embodiment, the striking face length SFL is 74 mm or more.

  In one embodiment, the supported region offset ratio is defined as the supported region offset length SROL divided by the striking face length SFL multiplied by 100%, and this supported region offset ratio is 40% or more. . In another embodiment, the supported region offset ratio is greater than 41%. In another embodiment, the supported region offset ratio is 42% or greater. In another embodiment, the supported region offset ratio is greater than 43%. In another embodiment, the supported region offset ratio is greater than 44%. In another embodiment, the supported region offset ratio is 45% or more. In another embodiment, the supported region offset ratio is 46% or more. In another embodiment, the supported region offset ratio is 47% or more. In another embodiment, the supported region offset ratio is 48% or more. In another embodiment, the supported region offset ratio is greater than 49%. In another embodiment, the supported region offset ratio is 50% or more. In another embodiment, the supported region offset ratio is 51% or more.

  A further advantage of incorporating the supported region 742 is that a thin striking face can be utilized. In the illustrated embodiment, the striking face 718 has a constant thickness. In other embodiments, the striking face can have a variable thickness. In one embodiment, the striking face has a thickness of 2.5 mm or less. In other embodiments, the striking face thickness is 2.4 mm or less. In other embodiments, the striking face thickness is 2.3 mm or less. In another embodiment, the striking face thickness is 2.2 mm or less. In another embodiment, the striking face thickness is 2.1 mm or less. In another embodiment, the striking face thickness is 2.0 mm or less. In another embodiment, the striking face has a thickness of 1.9 mm or less. In another embodiment, the striking face thickness is 1.8 mm or less. In other embodiments, the striking face thickness is 1.7 mm or less. In another embodiment, the striking face thickness is 1.6 mm or less. In another embodiment, the striking face thickness is 1.5 mm or less. In another embodiment, the striking face thickness is 1.4 mm or less.

  Although specific embodiments and aspects have been described and illustrated herein, the scope of the present invention is not limited to these specific embodiments and examples. Those skilled in the art will recognize other embodiments or improvements consistent with the scope and spirit of the present invention. Accordingly, the specific structures, operations, or media are disclosed as exemplary examples only. The scope of the invention is defined by the appended utility model registration claims and any equivalents.

DESCRIPTION OF SYMBOLS 100 Golf club head 102 Elastomeric element 103 Front part 104 Sole channel 105 Sole 108 Cradle 109 Recess 110 Flange 112 Rear part 114 Front sole part 116 Rear sole part 118 Hitting face 119 Rear surface 120 Cavity 200 Golf club head 202 Elastomer element 203 Front part 204 Sole channel 208 Cradle 209 Recessed portion 212 Rear portion 214 Front sole portion 216 Rear sole portion 218 Strike face 219 Rear surface 220 Cavity 222 Central portion 300 Golf club head 302 Elastomer element 303 Front portion 304 Sole channel 306 Adjustment portion receiving portion 310 Flange 312 Rear portion 314 Front sole portion 316 Rear sole portion 318 Strike face 319 Rear surface 320 Tee 330 adjuster drive (threaded parts)
332 Screw drive portion 334 Interface 400A, 400C Golf club head 402 Elastomer element 406 Adjustment portion accommodating portion 407 Rear surface 408A, 408B, 408C Cradle 409 Recessed portion 412 Rear portion 414 Continuous sole 418 Strike face 419 Back surface 420 Cavity 430 Adjustment portion drive portion (screw)
432 Screw drive portion 500A, 500B Golf club head 502A Face 502B Elastomer element 504A, 504B Bottom face edge 600 Golf club head 602 Elastomer element 603 Front face 605 Sole 612 Back face 618 Strike face 619 Back surface 640 Supported area boundary 642 Supported Area 650 Strike face perimeter 652 Strike face area 654, 656 Boundary 655 Upper radius 657 Lower radius 659 Plane 660 Score line 700 Golf club head 701 Perimeter 702 Elastomer element (deformable member)
703 Front portion 705 Sole 706 Toe 707 Top line 708 Cradle 708W Weight pad 709 Lip 712 Rear portion 718 Strike face 719 Back surface 740 Supported region circumference 742 Supported region 743 Geometric center 759 Stroke face heel reference surface 760 Score line 762 Cantilever support arm 764 Rib AT Arm thickness AW Arm width CL Arm center line CL Center line GP Ground plane H Distance RW Rib width SFL Stroke face length SROL Supported area offset length α Loft

Claims (10)

In golf club head,
Hitting face,
A peripheral portion surrounding the hitting face and extending rearward;
A coordinate system centered on the center of gravity of the golf club head,
The coordinate system includes: a y-axis extending perpendicular to the ground plane perpendicular to the ground plane when the golf club head is positioned at an address position with a predetermined loft and lie; and a right angle to the y-axis; An x-axis extending parallel to the hitting face in the direction of the heel of the golf club head; a y-axis and a z-axis extending perpendicularly to the x-axis and through the hitting face;
The striking face has a front surface configured to strike a golf ball and a back surface opposite the front surface;
The back surface of the striking face has a supported area;
A support arm spaced from the back surface of the striking face, the support arm extending from the periphery to the supported region;
A deformable element disposed between the support arm and the back surface of the striking face;
The deformable element has a front surface that contacts the back surface of the striking face and a back surface that contacts the support arm;
A perimeter of the front surface of the deformable element forms the supported region, the supported region has a geometric center, the hitting face has a plurality of score lines, and the hitting face is the y A heel standard plane extending parallel to the axis and the x-axis, the heel standard plane being offset from the most heel side boundary of the score line by 1 mm in the heel direction, and the geometry of the supported region The geometric center is measured parallel to the x-axis and is positioned toe side by the supported region offset length from the heel standard plane, and the striking face is parallel to the x-axis and the heel standard plane. To the most toe-side portion of the front surface of the hitting face, and the golf club head sets the supported region offset length to the hitting face. Has a supported region offset ratio multiplied by 100% and divided by the length, the golf club head, wherein said the supported region offset ratio is 40% or more.   The golf club head according to claim 1, wherein the support arm is cantilevered and fixed to the peripheral portion only at one end of the support arm.   The golf club head of claim 1, wherein the highest portion of the support arm is positioned parallel to the y-axis and no more than 35 mm above the surface to the ground.   The golf club head according to claim 1, wherein the supported region offset ratio is 50% or more.   The golf club head of claim 1, wherein the support arm is oriented substantially parallel to the back surface of the striking face. In a set of iron type golf club heads,
A first golf club head;
A second golf club head,
The first golf club head is
A first golf club head body having a first rear portion and a first striking face, wherein the first striking face is configured to strike a golf ball; A first golf club head body having a first front surface opposite to the first rear surface, the first rear portion being spaced from the first back surface;
A first elastomer element extending from the first rear portion to the first back surface of the first striking face;
A first loft angle;
The first MOI-Y;
A first striking face area;
A first unsupported face percentage that is not supported by the first elastomeric element and is a percentage of the area of the first striking face;
The second golf club head is
A second golf club head body having a second rear portion and a second striking face, wherein the second striking face is configured to strike a golf ball; A second golf club head body having a second front surface opposite to the second rear surface, the second rear portion being spaced from the second back surface;
A second elastomeric element extending from the second rear portion to the second back surface of the second striking face;
A second loft angle;
A second MOI-Y;
A second striking face area;
A second unsupported face percentage that is not supported by the second elastomeric element and is a percentage of the area of the second striking face;
The first loft angle is smaller than the second loft angle;
A set of iron type golf club heads, wherein the first MOI-Y is smaller than the second MOI-Y.   The set of iron-type golf club heads of claim 6, wherein the first elastomeric element is spaced from the periphery of the first striking face, and the second elastomeric element is spaced from the periphery of the second striking face.   The set of iron type golf club heads of claim 6, wherein the first elastomeric element has a modulus of about 1 to about 50 GPa and the second elastomeric element has a modulus of about 1 to about 50 GPa. The first area of the first supported area has a portion of the first back surface of the first striking face supported by the first elastomer element, and the first area of the second supported area The second area has a portion of the second back surface of the second striking face supported by the second elastomeric element, and the first area of the first supported region is , less than larger 100 mm ² than 60 mm ^2, and the said second area of second supported region, a set of iron type golf club head of 60 mm ² larger than 100 mm ² smaller claim 6.   7. The set of iron-type golf club heads of claim 6, wherein the first unsupported face percentage is greater than 90% and less than 99%, and the second unsupported face percentage is greater than 90% and less than 99%. .

Images