| 摘要 |
[Problem] To reduce the weight of a bicycle hub unit by using a hub in which a bearing holder and the like are integrally formed. [Solution] A hub (1) comprising a body section (15) having a cylindrical form, and disk-shaped spoke attachment sections (12) disposed at right angles to the body section (15) at roughly both ends of the body section (15), is formed. An axle (2) is disposed at the center of the cylindrical body section (15) of the hub (1). Bearings (3, 3) are disposed at both ends of the axle (2). Spherical nuts (5, 5), which perform a function of securing the bearings (3, 3) to both ends of the axle (2), are disposed at one end of the bearings (3, 3). The bicycle hub unit is formed by attaching the spherical nuts (5, 5). |
