To provide a rear sprocket for a human powered driving vehicle capable of improving strength and rigidity and realizing weight saving.SOLUTION: A rear sprocket 47 is used for a bicycle 1. The rear sprocket 47 includes an outer annular body 57, a plurality of sprocket teeth 59, an inner annular body 61, and a connection arm 63. The connection arm 63 has a radial outer half section 65 and a radial inner half section 67. A second circumferential width W2 of the radial inner half section 67 is smaller than a first circumferential width W1 of the radial outer half section 65. The connection arm 63 is formed to have a tapered shape toward a second radial position RP2 from a first radial position RP1.SELECTED DRAWING: Figure 6A

    【課題】強度及び剛性を向上することでき、かつ、軽量化を実現することができる人力駆動車両用リアスプロケットが、提供される。【解決手段】リアスプロケット47は、自転車1に用いられる。リアスプロケット47は、外側環状体57と、複数のスプロケット歯59と、内側環状体61と、連結アーム63と、を備える。連結アーム63は、径方向外側ハーフセクション65と、径方向内側ハーフセクション67と、を有する。径方向内側ハーフセクション67の第2周方向幅W2は、径方向外側ハーフセクション65の第1周方向幅W1より小さい。連結アーム63は、第1径方向位置RP1から第2径方向位置RP2に向けてテーパ状に形成される。【選択図】図6A


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    Title :

    REAR SPROCKET FOR HUMAN POWERED DRIVING VEHICLE


    Additional title:

    人力駆動車両用リアスプロケット


    Contributors:

    Publication date :

    2023-10-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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