To improve water draining property from the inside of a down tube while suppressing deterioration in strength of the down tube.SOLUTION: An electric bicycle frame 10 includes: a bracket 2 including a front wall part 21; and a down tube 3 with an opening edge part 31 on one end side thereof in a longitudinal direction. The opening edge part 31 is connected to the front wall part 21 so that the down tube 3 takes a posture of extending from the bracket 2. The front wall part 21 includes: an opening part 27 provided so as to draw wiring 90 backward from an inside of the down tube 3; and a through-hole 213 provided so as to discharge water backward from the inside of the down tube 3. The through-hole 213 is positioned in a part of the front wall part 21 which is surrounded by the opening edge part 31 of the down tube 3.SELECTED DRAWING: Figure 4

    【課題】ダウンチューブの強度の低下を抑えながら、ダウンチューブ内の水抜き性を高める。【解決手段】電動自転車用のフレーム10は、前壁部21を含むブラケット2と、長手方向の一端側に開口縁部31を有するダウンチューブ3とを備える。開口縁部31は、ダウンチューブ3がブラケット2から伸びる姿勢となるように、前壁部21に対して連結される。前壁部21は、ダウンチューブ3内の配線90を後方に引き出すように設けられた開口部27と、ダウンチューブ3内の水を後方に排出するように設けられた貫通部213とを有する。貫通部213は、前壁部21のうち、ダウンチューブ3の開口縁部31に囲まれる部分に位置する。【選択図】図4


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    Title :

    ELECTRIC BICYCLE FRAME AND ELECTRIC BICYCLE


    Additional title:

    電動自転車用のフレーム及び電動自転車


    Contributors:

    Publication date :

    2021-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62K Fahrräder , CYCLES / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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