Golf club heads and methods to manufacture golf club heads
Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head includes a body portion with an interior cavity and a face portion attached to the body portion to enclose the interior cavity. The golf club head also includes a filler material in the interior cavity and attached to the back surface of the face portion. The golf club head also includes an internal mass portion in the interior cavity spaced apart from the body portion and attached to the filler material. The filler material may be located between the face portion and the internal mass portion. The internal mass portion may be movable in the interior cavity relative to the body portion and the face portion. Other examples and embodiments may be described and claimed.
1. A golf club head comprising:
a body portion made from a first material and having an interior cavity, a toe portion with a toe portion edge, a hosel portion, a front portion, a back portion with a back wall portion, a top portion with a top portion edge, and a sole portion with a sole portion edge;
a face portion attached to the body portion to enclose the interior cavity, the face portion having a front surface and a back surface opposite of the front surface;
a filler material comprising a polymer in the interior cavity and attached to the back surface of the face portion; and
an internal mass portion in the interior cavity spaced apart from the back wall portion and attached to the filler material, the internal mass portion made from a second material,
wherein a density of the second material is greater than a density of the first material,
wherein a distance between the internal mass portion and the back wall portion is less than or equal to a total thickness of the filler material and the internal mass portion at a location in the interior cavity with a maximum distance between the face portion and the back wall portion,
wherein the filler material is located between the face portion and the internal mass portion, and
wherein the internal mass portion is movable in the interior cavity relative to the body portion and the face portion.
2. A golf club head as defined in claim 1 , wherein the filler material is bonded to the back surface of the face portion and the internal mass portion is bonded to the filler material.
3. A golf club head as defined in claim 1 , wherein a length of the filler material extending between the toe portion edge and the hosel portion is substantially greater than a length of the internal mass portion extending between the toe portion edge and the hosel portion.
4. A golf club head as defined in claim 1 , wherein a back surface of the filler material that faces the back wall portion has a substantially greater area than an area of a back surface of the internal mass portion that faces the back wall portion.
5. A golf club head as defined in claim 1 , wherein the filler material comprises a rubber or rubber compound.
6. A golf club head as defined in claim 1 , wherein the filler material comprises a thermoplastic elastomer material or a thermoset material.
7. A golf club head as defined in claim 1 , wherein a back surface of the filler material comprises a recess having a similar shape as a shape of the internal mass portion, and wherein the recess is configured to receive at least a portion of the internal mass portion.
8. A golf club head comprising:
a body portion made from a first material and having an interior cavity, a toe portion with a toe portion edge, a hosel portion, a front portion, a back portion with a back wall portion, a top portion with a top portion edge, and a sole portion with a sole portion edge;
a face portion attached to the body portion to enclose the interior cavity, the face portion having a front surface and a back surface opposite of the front surface;
a filler material comprising a polymer in the interior cavity and attached to the back surface of the face portion; and
an internal mass portion in the interior cavity, the internal mass portion made from a second material,
wherein a density of the second material is greater than a density of the first material,
wherein the internal mass portion is attached to the filler material and is spaced apart from the back wall portion, and
wherein a back surface of the filler material that faces the back wall portion has a substantially greater area than an area of a back surface of the internal mass portion that faces the back wall portion.
9. A golf club head as defined in claim 8 , wherein the internal mass portion is disc shaped having a size similar to a size of a ball strike region on the front surface of the face portion.
10. A golf club head as defined in claim 8 further comprising another filler material in the interior cavity between the internal mass portion and a back wall portion of a back portion of the body portion.
11. A golf club head as defined in claim 8 , wherein a distance between the internal mass portion and the back wall portion is less than or equal to a total thickness of the filler material and the internal mass portion at a location in the interior cavity with a maximum distance between the face portion and the back wall portion.
12. A golf club head as defined in claim 8 , wherein the back surface of the filler material comprises a recess having a similar shape as a shape of the internal mass portion, and wherein the recess is configured to receive at least a portion of the internal mass portion.
13. A golf club head as defined in claim 8 , wherein a length of the filler material extending between the toe portion edge and the hosel portion is substantially greater than a length of the internal mass portion extending between the toe portion edge and the hosel portion.
14. A golf club head comprising:
a body portion made from a first material and having an interior cavity, a toe portion with a toe portion edge, a hosel portion, a front portion, a back portion with a back wall portion, a top portion with a top portion edge, and a sole portion with a sole portion edge;
a face portion attached to the body portion to enclose the interior cavity, the face portion having a front surface and a back surface opposite of the front surface;
a filler material comprising a polymer in the interior cavity and attached to the back surface of the face portion; and
an internal mass portion made from a second material and located behind a ball strike region of the face portion, the internal mass portion attached to the filler material and spaced apart from the back wall portion,
wherein a density of the second material is greater than a density of the first material,
wherein a length of the filler material extending between the toe portion edge and the hosel portion is substantially greater than a length of the internal mass portion extending between the toe portion edge and the hosel portion, and
wherein the internal mass portion is movable relative to the body portion toward the face portion to compress the filler material.
15. A golf club head as defined in claim 14 , wherein the internal mass portion is disc shaped having a diameter greater than or equal to a diameter of a golf ball, wherein the back surface of the filler material comprises a recess configured to at least partially receive the internal mass portion.
16. A golf club head as defined in claim 14 , wherein a back surface of the filler material that faces the back wall portion has a substantially greater area than a back surface of the internal mass portion that faces the back wall portion.
17. A golf club head as defined in claim 14 further comprising another filler material in the interior cavity between the internal mass portion and inner walls of the body portion.
18. A golf club head as defined in claim 14 , wherein a distance between the internal mass portion and the back wall portion is less than or equal to a total thickness of the filler material and the internal mass portion at a location in the interior cavity with a maximum distance between the face portion and the back wall portion.
19. A golf club head as defined in claim 14 , wherein the filler material comprises a rubber or a rubber compound.
20. A golf club head as defined in claim 14 , wherein the filler material comprises a thermoplastic elastomer material or a thermoset material.