Golf club head
A golf club head is described having a club head body having an external surface with a heel portion, a toe portion, a crown portion, a sole portion, and a front opening. The golf club head also includes a face insert support structure located at the front opening. The support structure includes a rear support member. The rear support member includes a support portion interior surface contour defining an apex point and an undercut distance in an undercut region within at least one major or minor plane. A non-undercut region is located in at least one major or minor plane intersecting the crown to face transition region.
1. A golf club head comprising:
a club head body having an external surface with a heel portion, a toe portion, a crown portion, a sole portion, and a front opening;
a face insert support structure located at the front opening, the support structure including a rear support member, the rear support member having a support portion interior surface contour defining an apex point and an undercut distance in an undercut region within at least one major or minor plane;
a face insert attached at the front opening and closing the front opening of the body;
at least one non-undercut region located in at least one major or minor plane intersecting a crown to face transition region; and
at least one undercut region;
wherein the non-undercut region is located substantially in a crown region and creates a non-undercut zone having a zone angle that is between 5° and 175°.
2. The golf club head of claim 1 , wherein the golf club head has a coefficient of restitution of at least 0.79 and a characteristic time of less than at least 257 μs.
3. The golf club head of claim 2 , wherein the undercut distance is between 0 mm and 20 mm.
4. The golf club head of claim 2 , wherein an undercut height of the rear support member is between 1 mm and 20 mm.
5. A golf club head comprising:
a club head body having an external surface with a heel portion, a toe portion, a crown portion, a sole portion, and a front opening;
a face insert support structure located at the front opening, the support structure including a rear support member, the rear support member having a support portion interior surface contour defining an apex point and an undercut distance in an undercut region within at least one major or minor plane;
a face insert attached at the front opening and closing the front opening of the body;
at least one non-undercut region located in at least one major or minor plane intersecting a crown to face transition region;
at least one undercut region; and
a second non-undercut region that is located substantially in a sole region and creates a non-undercut zone having a zone angle that is between 5° and 175°, and an adjustable loft, lie, or face angle system that is capable of adjusting the loft, lie, or face angle that is proximate to the second non-undercut region located substantially in the sole region.
6. The golf club head of claim 1 , wherein the golf club head has a weight of between 185 g and 215 g, and the non-undercut region is centered about a major vertical plane.
7. The golf club head of claim 6 , wherein the golf club head has a volume between 400 cc and 475 cc.
8. A golf club head comprising:
a club head body having an external surface with a heel portion, a toe portion, a crown portion, a sole portion, and a front opening;
a face insert support structure located at the front opening, the support structure including a rear support member, the rear support member having a support portion interior surface contour defining an apex point and an undercut distance in an undercut region within at least one major or minor plane;
a face insert attached at the front opening and closing the front opening of the body;
at least one non-undercut region located in at least one major or minor plane intersecting a crown to face transition region;
at least one undercut region; and
a CG x-axis coordinate of the golf club head is between −5 mm and 10 mm, a CG y-axis coordinate is between 20 mm and 50 mm, and a CG z-axis coordinate is between −10 mm and 5 mm, and the rear support member includes a heel-side rear support member that is integral with an internal hosel tube structure.
9. The golf club head of claim 8 , wherein a moment of inertia about the golf club head CG z-axis is between 370 kg·mm 2 and 430 kg·mm 2 , a moment of inertia about the golf club head CG x-axis is between 160 kg·mm 2 and 320 kg·mm 2 , and a moment of inertia about the golf club head CG y-axis is between 270 kg·mm 2 and 350 kg·mm 2 .
10. A golf club head comprising:
a club head body having an external surface with a heel portion, a toe portion, a crown portion, a sole portion, and a front opening;
a face insert support structure located at the front opening, the support structure including a rear support member, the rear support member having a support portion interior surface contour defining an apex point and an undercut distance in an undercut region within at least one major or minor plane;
a face insert attached at the front opening and closing the front opening of the body; and
the rear support member having a toe undercut portion located proximate the toe portion, a heel undercut portion located proximate the heel portion, a crown non-undercut portion located between the toe undercut portion and heel undercut portion, and sole non-undercut portion located between the toe undercut portion and heel undercut portion.
11. The golf club head of claim 10 wherein the crown non-undercut portion spans the distance between the toe undercut portion and heel undercut portion.
12. The golf club head of claim 10 wherein the sole non-undercut portion extends from one end of the toe undercut portion.