Golf club head

Abstract

To reduce the weight of a face part without diminishing a repulsion performance.SOLUTION: A golf club head 1 including a hollow part in the inside, comprises a body part 100 including a crown part 3 and a sole part 4, and a face member 200 forming at least a part of a striking face for striking balls. The body part 100 is made of a first material having a first specific gravity. The face member 200 is made of a second material having a second specific gravity that is smaller than the first specific gravity. The body part 100 includes at least one slit 10 penetrating the body part 100, where the slit 10 extends in the longitudinal direction of the head.SELECTED DRAWING: Figure 1

Claims

1. A golf club head having a hollow section inside, It includes a main body portion including a crown portion and a sole portion, and a face member that forms at least a part of the striking face for striking the ball, The main body is formed of a first material having a first specific gravity, The face member is formed of a second material having a second specific gravity that is smaller than the first specific gravity. The main body portion is provided with at least one slit that penetrates the main body portion, The slit extends in the front-rear direction of the head and has a front end and a rear end in the front-rear direction of the head, and includes a first portion extending from the front end to the rear of the head, and a second portion connected to the first portion and having a circular contour. The first portion extends with a constant width, and the width of the second portion is greater than the width of the front end of the first portion. Golf club head.

2. The golf club head according to claim 1, wherein a plurality of slits are formed in the crown portion of the main body.

3. A golf club head having a hollow section inside, It includes a main body portion including a crown portion and a sole portion, and a face member that forms at least a part of the striking face for striking the ball, The main body is formed of a first material having a first specific gravity, The face member is formed of a second material having a second specific gravity that is smaller than the first specific gravity. The main body portion is provided with at least one slit that penetrates the main body portion, The aforementioned slit extends in the front-rear direction of the head, The crown portion of the main body is formed with the slit, The slits formed in the crown portion are three or fewer in number and are located within the projection area of ​​the face member toward the rear of the head. The aforementioned slit has a front end and a rear end in the front-rear direction of the head, The width of the rear end of the slit is greater than the width of the front end of the slit. Golf club head.

4. The golf club head according to claim 3, wherein three or fewer slits are formed in the sole portion of the main body.

5. The golf club head according to claim 3, wherein the slit includes a first portion extending from the front end to the rear of the head and a second portion having a circular contour connected to the first portion.

6. The golf club head according to any one of claims 1 to 4, wherein in a plan view of the slit, the contours of the front end and / or the rear end are arc-shaped.

7. The golf club head according to any one of claims 1 to 4, wherein the second material is a fiber-reinforced resin.

8. The golf club head according to any one of claims 1 to 4, wherein the length of the slit in the front-to-back direction of the head is 10 to 40 mm, and the width of the slit in the toe-to-heel direction is 0.5 to 10 mm.

9. The striking face is provided with a periphery, The golf club head according to any one of claims 1 to 4, wherein the shortest distance between the front end and the periphery is 10 mm or less.

10. The golf club head according to claim 9, wherein the shortest distance is 3 mm or less.

11. The golf club head according to any one of claims 1 to 4, wherein a thickened portion is formed around at least a part of the slit.

12. The golf club head according to claim 11, wherein the thickened portion includes an inner thickened portion that protrudes toward the hollow portion.

13. The golf club head according to claim 11, wherein the thickened portion includes an outer thickened portion that protrudes on the outer surface of the head.

14. The golf club head according to any one of claims 1 to 3, wherein a plurality of slits are formed in the sole portion of the main body.

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