Golf club head
A golf club head is provided having a club body having a front portion, a rear portion, a toe portion, and a heel portion. The club head also having a central portion connected with the front portion. A frame is connected with the central portion configured to provide a lightweight crown portion being located above an offset plane.
1. A golf club head, comprising:
a front portion, a rear portion, a sole portion, a toe portion, and a heel portion;
a first piece made of a first material having a first material density, the first piece is separately formed and defines at least a portion of the front portion and defines at least a forward portion of the toe portion and the heel portion;
a second piece made of a second material having a second material density, wherein the second piece is separately formed and attached to the first piece, and defines at least a portion of the rear portion and defines at least a rearward portion of the toe portion and the heel portion;
a sole plate attached to the second piece at the sole portion of the golf club head;
a weight made of a third material having a third material density greater than both the first material density and the second material density, wherein the weight is threadably and removably attached to an exterior portion of the golf club head; and
a center of gravity (CG) having a CG x-axis, a CG z-axis, and a CG y-axis;
wherein:
the first material density is greater than the second material density;
a moment of inertia of the golf club head about the CG z-axis (I zz ) is between about 2,000 g·cm 2 and about 14,000 g·cm 2 ;
a moment of inertia of the golf club head about the CG x-axis (I xx ) is between about 1,000 g·cm 2 and about 10,000 g·cm 2 ; and
a moment of inertia of the golf club head about the CG y-axis (I yy ) is between about 1,000 g·cm 2 and about 10,000 g·cm 2 .
2. The golf club head of claim 1 , wherein the weight forms an exterior portion of the golf club head.
3. The golf club head of claim 1 , wherein:
the front portion of the golf club head comprises a recessed portion; and
the golf club head further comprises a face insert received by the recessed portion,
wherein a rear surface of the face insert is at least partially supported by the recessed portion and at least a portion of the face insert is made of a polymer material.
4. The golf club head of claim 1 , wherein:
the first material is a metal material; and
the second material is aluminum.
5. The golf club head of claim 4 , wherein the golf club head has an I xx value of at least 2,989 g·cm 2 and an I zz value that is no less than the I xx value.
6. The golf club head of claim 5 , wherein the I zz value of the golf club head is at least 5,378 g·cm 2 .
7. The golf club head of claim 5 , wherein the first piece has a mass that is at least three times a mass of the second piece.
8. The golf club head of claim 7 , wherein the mass of the second piece is no more than 76 g.
9. The golf club head of claim 1 , wherein:
the front portion comprises a face portion;
the face portion includes a first portion, made of a first material, and a second portion, made of a second material; and
the first material is different than the second material.
10. The golf club head of claim 1 , wherein the sole plate is made of a non-metallic plastic material.
11. The golf club head of claim 10 , wherein a CGy location as measured from a center point of the front portion is between about 36.9 mm and about 42.3 mm.
12. The golf club head of claim 11 , wherein the I xx value of the golf club head is at least 3,500 g·cm 2 and the I zz value is no less than the I xx value.
13. The golf club head of claim 1 , wherein the front portion comprises a face, and wherein at least a portion of the face is made of a polymer material.
14. The golf club head of claim 1 , wherein at least a portion of the weight is located below the CG y-axis.
15. The golf club head of claim 1 , further comprising a face insert adhesively bonded to the first piece.
16. A golf club head, comprising:
a front portion, a rear portion, a toe portion, a sole portion, and a heel portion;
a first piece made of a first material having a first material density, the first piece is separately formed and defines at least a portion of the front portion and defines at least a forward portion of the toe portion and the heel portion;
a second piece made of a second material having a second material density, the second piece is separately formed, defines at least a portion of the rear portion, defines at least a rearward portion of the toe portion and the heel portion, and is configured to receive an external weight;
a weight made of a third material having a third material density greater than both the first material density and the second material density, wherein the weight is threadably and removably attached to the second piece;
a non-metallic plastic or polymer material sole plate attached to the second piece at the sole portion of the golf club head; and
a center of gravity (CG) having a CG x-axis, a CG z-axis, and a CG y-axis,
wherein:
the second piece is configured to receive the external weight at a position rearward of the sole plate;
the first material density is greater than the second material density and greater than a density of the sole plate;
a moment of inertia of the golf club head about a CG z-axis (I zz ) is between about 2,000 g·cm 2 and about 14,000 g·cm 2 ;
a moment of inertia of the golf club head about a CG x-axis (I xx ) is between about 2,989 g·cm 2 and about 10,000 g·cm 2 ; and
a moment of inertia of the golf club head about a CG y-axis (I yy ) is between about 1,000 g·cm 2 and about 10,000 g·cm 2 ;
the first material is a metal material; and
the second material is a polymer material.
17. The golf club head of claim 16 , wherein:
the first material is a metal material; and
the second material is a non-metallic plastic or polymer material.
18. The golf club head of claim 17 , wherein the weight is located toeward of the CG y-axis.
19. The golf club head of claim 17 , wherein the second material is a polymer material such that at least a portion of the weight is surrounded by the polymer material.
20. The golf club head of claim 16 , wherein:
the second piece is formed of a thermoplastic material, and the sole plate is separately formed of a thermoset polymer material.
21. The golf club head of claim 16 , wherein:
the second piece is formed of a fiber-reinforced polymer.
22. The golf club head of claim 21 , wherein:
the second piece is formed of a carbon fiber-reinforced polymer.
23. A golf club head, comprising:
a front portion, a rear portion, a sole portion, a toe portion, and a heel portion;
a first piece made of a first material having a first material density, the first piece is separately formed and defines at least a portion of the front portion and defines at least a forward portion of the toe portion and the heel portion;
a second piece made of a second material having a second material density, the second piece is separately formed and defines at least a portion of the rear portion and defines at least a rearward portion of the toe portion and the heel portion;
a non-metallic plastic or polymer sole plate attached to the second piece at the sole portion of the golf club head; and
a center of gravity (CG) having a CG x-axis, a CG z-axis, and a CG y-axis,
wherein:
the first material density is greater than the second material density;
the front portion of the golf club head comprises a recessed portion;
the golf club head further comprises a face insert received by the recessed portion, wherein a rear surface of the face insert is at least partially supported by the recessed portion and at least a portion of the face insert is made of a polymer material;
the sole plate extends toeward of the face insert;
a moment of inertia of the golf club head about the CG z-axis (I zz ) is between 400 kg·mm 2 and 1,400 kg·mm 2 ;
a moment of inertia of the golf club head about the CG x-axis (I xx ) is between 1,000 g·cm 2 and 10,000 g·cm 2 ; and
a moment of inertia of the golf club head about the CG y-axis (I yy ) is between 1,000 g·cm 2 and 10,000 g·cm 2 .
24. The golf club head of claim 23 , wherein a CGy location as measured from a center location of the front portion is no less than 36.9 mm and Ixx is at least 3,072 g·cm 2 .
25. The golf club head of claim 24 , wherein the sole plate extends rearward of the CG x-axis.