PROBLEM TO BE SOLVED: To provide a caster device that makes a chair hardly subjected to transmission of vibrations generated by irregularities on a road surface, even when the road surface has the irregularities.SOLUTION: A caster 1 is attached to the tip of a leg of a fork 5 via a caster shaft 2. The fork 5 is screwed by being attached to a main shaft 4 that is extended downward from a base side in the state of being assembled to a fork retainer 3. The fork 5 has a leaf spring part 8 that connects both the legs 7 and 7 together and that is deflection-deformed.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】 路面に凹凸があってもその振動が椅子に伝わり難いキャスター装置の提供。【解決手段】 キャスター1はフォーク5の脚部先端にキャスター軸2を介して取付けられ、該フォーク5はフォーク受け3に組付けられた状態で基台側から下方へ延びる主軸4に取付けられてネジ止めされ、上記フォーク5は両脚部7,7を繋ぐと共に撓み変形する板バネ部8を有している。【選択図】 図1
