| 摘要 |
A hub (1) comprises two bearing devices (2, 4) for the rear wheel. The first device comprises two sleeves (20, 25) separated by bearings (26, 27). The outer sleeve supports the spokes (24) in flanges (21, 22). The inner sleeve, consisting of two nested cylinders, comprises flanges which co-operate with the flange (45) of the inner sleeve (40) of the second bearing device. This latter device comprises an outer sleeve (49) separated from the inner sleeve by two bearings (41, 42). This outer sleeve (49) is secured to the outer sleeve (20) of the first bearing by a ratchet (51). A freewheeling device (53) and its driving pinions (54) are positioned on the outer sleeve (49) of the second bearing device. A threaded rod (60) serves as a fixed take-down axis, and is provided with the necessary struts and nuts. Purpose: to obtain a take-down hub with identical front and rear wheels incorporating of a freewheeling system.
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