PROBLEM TO BE SOLVED: To provide a caster which can alleviate vibration and can operate in combination with a gear.SOLUTION: A vibration absorption caster 1 has: an annular body 10 having an open hole at a center thereof; an assembly shaft 30 which is attached into the open hole in an axial direction; and plural buffer arms 50 which are mounted between the annular body and the assembly shaft, are formed in a curvature shape, and have a restorable elasticity. Among them, each buffer arm 50 has a first deformation stage, a second deformation stage and a third deformation stage, the first deformation stage is formed in a curvature shape, and one end thereof is connected to an outer wall of the assembly shaft. The second deformation stage is formed in a curvature shape and is extended to the other end of the first deformation stage. The third deformation stage is formed in a curvature shape, and the other end thereof is extended to the second deformation stage and is connected to an inner peripheral surface of the open hole. Further, the buffer arm is deformed when receiving an external force, whereby the assembly shaft thereof is so moved as to be deviated from the center of the open hole. When the buffer arm does not receive an external force, the assembly shaft thereof is restored to the center of the open hole.
【課題】振動を緩和し、歯車に組み合わせて稼動することができるキャスターを提供する。【解決手段】振動吸収キャスター1は、中心に貫通孔を有する環状本体10と、貫通孔に軸方向に向かって取り付けられる組立軸30と、環状本体と組立軸との間に取り付けられ、湾曲状を呈し、復位可能な弾性を備える複数の緩衝アーム50とを有し、その内、各緩衝アームは、第一変形段、第二変形段、第三変形段を有し、該第一変形段は、湾曲状を呈し、一端が組立軸の外壁に連結され、該第二変形段は、湾曲状を呈し、第一変形段の他端に延設され、該第三変形段は、湾曲状を呈し、他端が第二変形段に延設され、貫通孔の内周面に連結される。また、該緩衝アームは外力を受けると変形して、その組立軸が貫通孔の中心からずれるように移動し、外力を受けなくなると、その組立軸が貫通孔の中心に復位するものである。【選択図】図1
VIBRATION ABSORPTION CASTER
振動吸収キャスター
2015-11-12
Patent
Electronic Resource
Japanese
CASTER, CARRIAGE, BAG WITH CASTER AND INSTRUMENT WITH CASTER
European Patent Office | 2022
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