PROBLEM TO BE SOLVED: To provide a saddle-type vehicle cast wheel integrally having a hub through which an axle is inserted, a rim coaxially surrounding the hub, and a plurality of spokes for coupling the hub and the rim to be cast-formed, and capable of increasing the strength of the rim while avoiding the enlargement of the hub, reducing weight and improving an appearance.SOLUTION: A spoke 15 integrally includes a main spoke part 15a extending from a hub 13 toward a rim 14 side and tapered toward the rim 14 side, and a solid branch spoke part 15b branching into two from the main spoke part 15a to be continuous from the rim 14, and is formed into a Y shape, the part of the main spoke part 15a stretching from the hub 13 to the branch part 20 of the branch spoke part 15b is provided with a spoke side hollow part 22 inside and is formed into a hollow closed sectional shape, and an opening 23 is formed in at least the branch part 20 of the spoke 15 to communicate with the spoke side hollow part 22.SELECTED DRAWING: Figure 3
【課題】車軸が挿通されるハブと、ハブを同軸に囲繞するリムと、ハブおよびリム間を連結する複数のスポークとを一体に有して鋳造成形される鞍乗り型車両用キャストホイールにおいて、ハブの大型化を回避して軽量化を図るとともに外観性を高めつつ、リムの強度増大を可能とする。【解決手段】スポーク15が、ハブ13からリム14側に向かって延びるとともにリム14側に向かって先細りとなる主スポーク部15aと、主スポーク部15aから二股状に分岐してリム14に連設される中実の枝スポーク部15bとを一体に有してY字状に形成され、主スポーク部15aのうちハブ13から枝スポーク部15bの分岐部20に至るまでの部分がスポーク側中空部22を内部に有するようにして中空の閉断面形状に形成され、スポーク15のうち少なくとも分岐部20に、スポーク側中空部22に通じる開口部23が設けられる。【選択図】 図3
SADDLE-TYPE VEHICLE CAST WHEEL
鞍乗り型車両用キャストホイール
2016-07-25
Patent
Electronic Resource
Japanese
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |
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