WHEEL SUPPORT DEVICE FOR WHEELCHAIR

Japanese Patent JP2023049406

A

To provide a wheel support device for a wheelchair capable of preventing a preload from being applied to right and left deep groove ball bearings and preventing occurrence of a shoulder riding phenomenon.SOLUTION: Considering a set axial clearance Δa of right and left deep groove ball bearings 11, 12, a pitch diameter DP1DP2, a plane difference Δa1Δa2, a total value Δa' of a clearance reduction amount due to fitting, a width LH of shoulder parts 10a, 10b, and a width LS of a spacer 13, the set axial clearance Δa is formulated, and managed appropriately, where a dimensionless parameter X for the set axial clearance Δa is defined as 0