| 摘要 |
A method for manufacturing the shaft unit of a golf club includes the following steps: (1) providing a shaft which has a first end surface, a second end surface, and a cross-sectional area that increases gradually from the first end surface to the second end surface; (2) providing an elongated first-layer sheet which is made of resin, and which has two inclined end surfaces that are parallel to each other and several fibers that are evenly coated on the sheet that extend along the length of the sheet; (3) winding the sheet on the shaft in a clockwise direction from the first end surface to the second end surface of the shaft in such a manner that one of the end surfaces of the sheet and the first end surface of the shaft are on a similar plane and that the fibers of the sheet form an angle of about 48+/-3 degrees with respect to an axis of the shaft so that, when the first-layer sheet is wound to the second end surface of the shaft, the fibers of the first-layer sheet form an angle of about 19+/-3 degrees with respect to the axis of the shaft; (4) winding a second-layer sheet on the shaft in a counterclockwise direction in the same manner as the first-layer sheet; and (5) pressurizing and heating assembly of the sheets and the shaft so as to form the golf club.
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