The invention provides a hub ratchet wheel structure of a bicycle, which comprises a ratchet wheel group arranged between a hub seat and a sleeve group, a plurality of inclined grooves with preset depths are annularly arranged on one side of the hub seat corresponding to the sleeve group, and the axial line of the groove hole of each inclined groove is not parallel to the axial line of a wheel axle. A ratchet ring is sleeved on the bearing seat and between the hub seat, a plurality of ratchets are annularly arranged on the ratchet ring relative to the edge surfaces of the inclined grooves at preset intervals, each ratchet is in the shape of a flange, one preset edge surface of each ratchet is an engaged cambered surface in the shape of a cambered surface, and a pawl piece is arranged in each inclined groove and can respectively correspond to a part of each ratchet. When the pawl pieces are meshed with the ratchets, the local edge faces of the pawl pieces are attached to the meshing arc faces, and an elastic set is arranged between the bottom of the inclined groove and the pawl pieces so that the pawl pieces can be automatically and linearly pushed towards the ratchets, the pawl pieces and the ratchets can be meshed with each other, the meshing switching sensitivity can be improved, and the delay time of treading starting can be shortened.

    本发明提供一种自行车的花毂棘轮结构,包括一棘轮组,设于一花毂座及一套筒组间,于对应该套筒组的该花毂座一侧上环设有具预设深度的若干斜置槽,各斜置槽的槽孔轴线分别与该轮轴的轴线呈非平行状态,于该承座上及花毂座间套设一棘齿环,于该棘齿环相对各斜置槽的缘面,设有具预设间距且环状排列的若干棘齿,各棘齿为凸缘状,其一预设缘面呈弧面状的一啮合弧面,于各斜置槽内分别设有一棘爪件,可分别对应部分各棘齿,各棘爪件及棘齿相啮合时,该棘爪件的局部缘面将与该啮合弧面贴合,于该斜置槽底部与该棘爪件间设有一弹性组,以将该棘爪件自动朝各棘齿方向线性推移,使各棘爪件及棘齿相互啮合,增进啮合切换灵敏度、缩短踩踏起步的延迟时间。


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    Title :

    Hub ratchet wheel structure of bicycle


    Additional title:

    自行车的花毂棘轮结构


    Contributors:
    LIU WEITING (author)

    Publication date :

    2022-10-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



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