Gear hub for bicycles

The gear hub integrates lightweight shock-absorbing rings to address weight and vibration issues, enhancing stability and performance by dampening vibrations and reducing the gear hub's weight.

DE102024137553A1Pending Publication Date: 2026-06-18CHOSEN
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
CHOSEN
Filing Date
2024-12-12
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Conventional gear hubs for bicycles are heavy due to metallic construction, lack shock-absorbing structures, and experience vibration transmission leading to instability and damage.

Method used

Incorporation of lightweight shock-absorbing rings made of plastic or rubber, which dampen vibrations and secure the drive and clutch rings, along with a design that reduces weight and enhances stability.

Benefits of technology

The solution effectively reduces weight and stabilizes the gear hub by absorbing vibrations, preventing damage and improving the overall performance of the bicycle.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a gear hub for bicycles, comprising a main body (10) at one end of which an open receiving space (11) is formed, wherein a central axis (12) is arranged in the middle of the main body (10) such that it passes axially through the main body (10), wherein a coupling ring (13) is mounted in the receiving space (11), wherein an annular coupling toothing (133) is arranged on the surface of one end of the coupling ring (13); and a sprocket holder (20) which is positioned around the central axis (12) and assembled with the main body (10), wherein a fitting space (21) is formed at one end of the sprocket holder (20) in which a drive ring (22) is axially mounted and formed such that an installation cavity (21) is formed at one end of the drive ring (22) recessed inwards, wherein a first shock-absorbing ring (23) made of lightweight material is force-fitted in the installation cavity (21),A ring-shaped drive toothing (225) is arranged on the surface of the outer end of a blocking wall (224) of the drive ring (22), and the ring-shaped drive toothing (225) and the ring-shaped coupling toothing (133) can be engaged and disengaged from each other. Thus, the vibrations of the drive ring (22) can be dampened by the first shock-absorbing ring (23), thereby increasing the stability of the drive ring (22). A weight reduction of the gear hub is achieved by using a lightweight material for the first shock-absorbing ring (23).
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Citation Information

Patent Citations

  • rear wheel hub, in particular for bicycles

    DE102007030190A1

  • Hub arrangement for a muscle-powered vehicle

    DE102022120459A1

  • Hub especially for bicycles

    DE102022129570A1

  • Hub drive structure

    TWM544397U

  • TW00000M544397U