bicycle hub

Abstract

The invention relates to a bicycle hub which is simple in structure, low in processing cost and long in service life. The bicycle hub comprises a mandrel, a hub body arranged in the mandrel in a sleeved mode, a left axle bumper, a middle axle bumper and a right axle bumper, wherein the left axle bumper, the middle axle bumper and the right axle bumper are arranged on the mandrel. Two ports of the hub body are internally provided with a pair of bead bowls, wherein the bead bowls, the left axle bumper and a ratchet wheel with a bead bowl face on the outer side wall form a pair of rolling bearings through a circle of steel balls. The inner wall faces in the two ports of the ratchet wheel are provided with a left bead bowl part and a right bead bowl part, and the left bead bowl part and the right bead bowl part are matched with the middle axle bumper and the right axle bumper respectively through a circle of steel beads to compose another pair of roller path bearings. According to the bicycle hub, the bearing diameter is large, the borne force acts on the wall of an outer shell of the ratchet. In the using process of the bicycle hub, the middle axle bumper and the steel beads are not prone to abrasion, and the service life of the whole hub is not affected. In addition, due to the fact that the middle axle bumper and the mandrel are of a split structure, roller path faces on the two sides are convenient to process, and cost is low.

Description

technical field [0001] The invention relates to a bicycle hub. Background technique [0002] The hub is an important part of the bicycle, and the existing bicycle hub structure is as follows: figure 1 As shown, it includes: a mandrel 1 with a center shaft stop 3, a left shaft stop 2 and a right shaft stop 4 arranged on both sides of the mandrel 1; a pair of bead bowls are arranged on the inner wall of the two ports of the hub body 5 6. The pair of bead bowls 6 cooperate with the left shaft block 2 and the center shaft block 3 respectively through a circle of steel balls to form a pair of rolling bearings; the inner walls of the two ports of the ratchet 7 are provided with bead bowls, and the pair of bead bowls are connected with the said The center shaft block 3 and the right shaft block 4 form a pair of raceway bearings through the cooperation of a ring of steel balls; wherein, both sides of the center shaft block 3 cooperate with the steel balls; the disadvantage of this ...

AI Technical Summary

Problems solved by technology

[0002] The hub is an important part of the bicycle, and the existing bicycle hub structure is as follows: figure 1 As shown, it includes: a mandrel 1 with a center shaft stop 3, a left shaft stop 2 and a right shaft stop 4 arranged on both sides of the mandrel 1; a pair of bead bowls are arranged on the inner wall of the two ports of the hub body 5 6. The pair of bead bowls 6 cooperate with the left shaft block 2 and the center shaft block 3 respectively through a circle of steel balls to form a pair of rolling bearings; the inner walls of the two ports of the ratchet 7 are provided with bead bowls, and the pair of bead bowls are connected with the said The center shaft block 3 and the right shaft block 4 form a pair of raceway bearings through the cooperation of a ring of steel balls; wherein, both sides of the center shaft block 3 cooperate with the steel balls; the disadvantage of this structure is that: The space between the center shaft block 3 and the ratchet 7 is small, and the diameter of the rolling bearing formed is small, so the center shaft block and steel balls bear a large load. During use, the center shaft block and steel balls are prone to wear and tear, which affects The service life of the whole hub is shortened; in addition, because the center shaft block 3 is integrated with the mandrel, the processing technology of the raceway surfaces on both sides is complicated and the cost is high.

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