To provide a casting swing arm with hollow inside, which maintains rigidity and furthermore has new design property.SOLUTION: A casting swing arm comprises: pivot portions (45, 46); left and right arm portions (41, 42) which extend backward from the pivot portions (45, 46); and a cross portion (43) which connects the left and right arm portions (41, 42). The arm portions (41, 42) have upper walls (41A, 42A), lower walls (41B, 42B), outer walls (41C, 42C) and an inner walls (41D, 42D), the arm portions (41, 42) form an internal space (16A) between them, and a recess (51) which dents into the internal space (16A) is formed in each of the outer wall (41C, 42C) of the arm portions (41, 42).SELECTED DRAWING: Figure 3

    【課題】内部を中空とする鋳造スイングアームにおいて剛性を担保しながら新しいデザイン性を持った鋳造スイングアームを提供する。【解決手段】鋳造スイングアームは、ピボット部(45、46)と、前記ピボット部(45、46)から後方に延びる左右のアーム部(41、42)と、前記左右のアーム部(41、42)を接続するクロス部(43)と、を備える鋳造スイングアームにおいて、前記アーム部(41、42)は、上壁(41A、42A)、下壁(41B、42B)、外壁(41C、42C)、および、内壁(41D、42D)を有し、内部を中空とする内部空間(16A)を有し、前記アーム部(41、42)の外壁(41C、42C)に前記内部空間(16A)に向かって入り込む凹部(51)が形成されている。【選択図】図3


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    Title :

    CASTING SWING ARM


    Additional title:

    鋳造スイングアーム


    Contributors:

    Publication date :

    2022-10-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62K Fahrräder , CYCLES / B22C FOUNDRY MOULDING , Gießformen



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