Golf club head and manufacturing method for same
AssigneeDunlop Sports Co. Ltd.
InventorAkio YAMAMOTO
Life of this patent
Estimating the term…
Abstract
The present invention provides a golf club head that enables increasing the moment of inertia while also improving durability, and a manufacturing method for the same. The golf club head of the present invention includes a crown portion. The crown portion has a first region having a first thickness and multiple second regions having a second thickness that is smaller than the first thickness. The second regions are distributed in a radiating fashion so as to extend from an origin toward a peripheral portion of the crown portion excluding the face side, the origin being located within 15 mm of the center of gravity of the golf club head in the toe-heel direction and also being located in the vicinity of the face side in the face-back direction in a plan view.
Claims7
A golf club head comprising:
- a crown portion,
- wherein the crown portion has a first region having a first thickness and a plurality of second regions having a second thickness that is smaller than the first thickness,
- the plurality of second regions are distributed in a radiating fashion so as to extend from an origin toward a peripheral portion of the crown portion excluding a face side, the origin being located within 15 mm of the center of gravity of the golf club head in a toe-heel direction and also being located in the vicinity of the face side in a face-back direction in a plan view,
- a portion of the first region arranged between adjacent second regions is configured such that the width of the first region portion increases as the first region portion extends from the origin side to the peripheral portion side,
- the peripheral portion of the crown portion is configured by the first region, and
- edges of the second regions on the peripheral portion side are connected to the peripheral portion configured by the first region.
A manufacturing method for a golf club head comprising:
- a step of preparing a mold for a golf club head that has a crown portion, the crown portion having a first region having a first thickness and a plurality of second regions having a second thickness that is smaller than the first thickness, the plurality of second regions being distributed in a radiating fashion so as to extend from an origin toward a peripheral portion of the crown portion excluding a face side, the origin being located within 15 mm of the center of gravity of the golf club head in a toe-heel direction and also being located in the vicinity of the face side in a face-back direction in a plan view, a portion of the first region arranged between adjacent second regions being configured such that the width of the first region portion increases as the first region portion extends from the origin side to the peripheral portion side, the peripheral portion of the crown portion being configured by the first region, and edges of the second regions on the peripheral portion side being connected to the peripheral portion configured by the first region;
- and
- a step of injecting molten metal through at least one gate provided in the mold, the gate being provided at a position that corresponds to the first region in the peripheral portion of the crown portion.
Dependencies are inferred from the claim text.