PROBLEM TO BE SOLVED: To provide a caster having shock-absorbing function which can be easily manufactured at low cost. SOLUTION: In the caster Ca, a pair of wheel plates 1a having a hub 11a, a semi-rim 12a and a disk 13a therebetween are butted to each other so as to form a rim 12 by the semi-rim 12a and connected to each other by a caster shaft 4. An impact absorbing elastic member 2a is built in a space surrounded by the pair of wheel plates 1a, an outer wheel 3 is provided on the rim 12, and a plurality of holes 131a are formed in the disk 13a in each wheel plate part 1a to provide a spoke 132a between adjacent holes. The spoke 132a is bent and extends toward the semi-rim 12a, the semi-rim 12a and the spoke 132a are elastically deformable in an elastically restoring manner, and the spoke 132a is deformed according to the deformation of the semi-rim 12a to indicate the shock-absorbing capacity together with the elastic member 2 to be deformed according to the deformation of the semi-rim 12a. COPYRIGHT: (C)2006,JPO&NCIPI
【課題】緩衝機能を有し、簡単、安価に製作できるキャスタを提供する。 【解決手段】ハブ部11a、半リム部12a及びそれらの間のディスク部13aを有する車板部1aの一対が、半リム部12a同士でリム12を形成するように突き合わされてキャスタ軸4で連結されており、一対の車板部1aで囲まれた空間に衝撃吸収用弾性部材2が内蔵され、リム12に外輪3が設けられており、各車板部1aにおけるディスク部13aに複数の開孔131aが形成されていることで隣り合う開孔間にスポーク部132aが提供されており、スポーク部132aは、屈曲して半リム部12aへ向かって延びており、半リム部12a及びスポーク部132aはそれぞれ弾性復元可能に弾性変形可能であり、スポーク部132aは半リム部12aの変形に応じて変形することで、半リム部12aの変形に応じて変形する弾性部材2とともに緩衝能を示すキャスタCa。 【選択図】 図2




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    JP-2014118128-AJune 30, 2014Bridgestone Corp, 株式会社ブリヂストンNon-pneumatic tire