To provide a level difference adaptive caster device capable of moving smoothly and stably and climbing over a step end face easily.SOLUTION: A level difference adaptive caster device includes a sub wheel 8 that abuts against a step top face Jb when a main wheel 7 contacts with a step end face Ja, a holding body 1 having a pair of side wall parts 10 and to be attached to a mounting member B, a main wheel supporting member 2, to which the main wheel 7 is pivotably attached at a lower part 2b and the holding body 1 is at an upper part 2a, a sub wheel supporting member 3, to which the sub wheel 8 is pivotably attached at a front part 3c and the main wheel supporting member 2 is at a rear part 3d, and a slide roller 30 attached to the sub wheel supporting member 3. The holding body 1 has guide grooves 13 at the side wall parts 10, the guide groove 13 being inclined backward and downward in side view. When the main wheel 7 contacts with the step end face Ja, the main wheel supporting member 2 swings backward and the sub wheel supporting member 3 correspondingly moves backward, the slide roller 30 is guided with the guide groove 13, the front part 3c of the sub wheel supporting member 3 swings backward, the sub wheel 8 is pressed by the step top face Jb, and the main wheel 7 climbs over the step end face Ja.SELECTED DRAWING: Figure 3
【課題】スムーズで安定した作動が可能で、容易に段差端面を乗り越えることが可能な段差対応キャスター装置を提供する。【解決手段】主車輪7が段差端面Jaに接触した際に段差上面Jbに当接する副車輪8を備え、被取着部材Bに取着され一対の側壁部10を有する保持本体1と、主車輪7が下部2bに上部2aが保持本体1に枢着された主車輪支持部材2と、副車輪8が前部3cに後部3dが主車輪支持部材2に枢着された副車輪支持部材3と、副車輪支持部材3に取着されたスライドローラ30とを備え、保持本体1は側壁部10に側面視後方下傾状のガイド溝13を有し、主車輪7が段差端面Jaに接触すると、主車輪支持部材2が後方へ揺動すると共に副車輪支持部材3が後方へ移動し、スライドローラ30がガイド溝13に案内され副車輪支持部材3の前部3cが下方へ揺動し、副車輪8が段差上面Jbに押圧されて、主車輪7が段差端面Jaを乗り越える。【選択図】図3
LEVEL DIFFERENCE ADAPTIVE CASTER DEVICE
段差対応キャスター装置
2019-06-24
Patent
Electronic Resource
Japanese
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |