To improve horizontal turning performance of a lower member in a caster device in which the lower member rotatably provided with a wheel is horizontally turnably mounted in an upper member attached to a lower section of a body to be supported.SOLUTION: A caster device 1 includes: an upper member 4 which is attached to a lower section of a body 2 to be supported; a lower member 5 which is horizontally turnably mounted in the upper member 4; and a wheel 6 which is rotatably provided at a portion deviated from a horizontal turning center O of the lower member 5. A frame-like slider member 7 for surrounding the horizontal turning center O is interposed between the upper member 4 and the lower member 5. In at least two faces of two faces of a top face 7a of the slider member 7 and a downward face 41a of the upper member 4 opposed to the top face and two faces of a lower face 7b of the slider member 7 and an upward face 51a of the lower member 5 opposed to the lower face, a projection line section 71 or 72 for surrounding the horizontal turning center O is formed on one face, and a plurality of projection sections 40 or 50 which cross the projection line section 71 or 72, come into contact with the projection line section 71 or 72, and are arranged so as to surround the horizontal turning center O in a plan view on the other face.SELECTED DRAWING: Figure 2
【課題】車輪を回転自在に設けた下部材が被支持体の下部に取り付く上部材に水平旋回自在に装着されたキャスタ装置において、下部材の水平旋回性能を向上する。【解決手段】キャスタ装置1は、被支持体2の下部に取り付く上部材4と、上部材4に水平旋回自在に装着した下部材5と、下部材5のうち水平旋回中心Oからずれた部位に回転自在に設けた車輪6とを備える。上部材4と下部材5との間に水平旋回中心Oを囲う枠状のスライダ部材7が介在している。スライダ部材7の上面7aとそれに対向する上部材4の下向面41aとの2面、及びスライダ部材7の下面7bとそれに対向する下部材5の上向面51aとの2面のうち少なくとも一方の2面において、一方の面に水平旋回中心Oを囲う凸条部71又は72が形成され、他方の面に、平面視で凸条部71又は72と交差して凸条部71又は72に接触するとともに水平旋回中心Oを囲うように並べられた複数の凸部40又は50が形成されている。【選択図】図2
CASTER DEVICE
キャスタ装置
2020-09-17
Patent
Electronic Resource
Japanese
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |
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