Golf club shaft

Abstract

The a golf club shaft includes a sheet member made of fiber reinforced plastic material, preferably in the form of a mesh member having a reticular or net-like structure, secured circumferentially around a cylindrical outer surface of the grip end of the shaft body. Preferably, this sheet member includes an extension that is visible from outside by extending from the club head end of the grip to achieve a distinct appearance and/or to enhance the mechanical strength of the related part which is known to be subjected to a substantial stress in use. The presence of the sheet member not only improves various mechanical characteristics, such as the bending strength and flattening strength and the vibration damping capabilities of the grip portion but also provides a distinct and attractive appearance to the golf club.

Description

TECHNICAL FIELD [0001] The present invention relates to a golf club shaft, and more particularly to a golf club shaft that is light in weight and strong. The golf club shaft of the present invention may also have a distinct appearance and allows the firm and reliable attachment of the grip to the shaft body to be ensured. BACKGROUND OF THE INVENTION [0002] A conventional golf club shaft is typically constructed such that, when attaching a grip to the grip end of the shaft body, an adhesive or the like is applied to firmly secure the grip to the shaft body. It is desirable that the bending strength, flattening strength and vibration damping capabilities of the part of the shaft body to which this grip is affixed be improved while the golf club shaft needs to be as light in weight as possible. Furthermore, at the end of the follow through movement in a golfer's golf swing, the grip portion of the shaft body tends to hit the golfer's shoulder, and this causes a significant bending stre...

AI Technical Summary

Benefits of technology

[0027] Furthermore, steel is superior as a material for a golf club shaft, and has various advantages over carbon reinforced plastic material, such as a higher toughness, an ability to undergo a large deflection without losing the resiliency, a high resistance to twisting, a high resistance to scratching, etc. Although steel is preferred as the material for the shaft body to which the present invention is applied, aluminum, titanium and various alloys may also be used as the material for the shaft body when implementing the present invention.

Problems solved by technology

Furthermore, at the end of the follow through movement in a golfer's golf swing, the grip portion of the shaft body tends to hit the golfer's shoulder, and this causes a significant bending stress in the grip portion of the shaft body.

Further, the outer cylindrical surface of the shaft body is generally smooth, giving rise to various problems.

This adds to the number of manufacturing steps and adversely affects the production efficiency.

It is practiced to put colored tape around a suitable part of the club shaft for this purpose, but it is not so agreeable in appearance, and may peel off in time.

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