US 12,435,791 B2
Wheel drive device
Terumasa Nagasaki, Yokosuka (JP); Takuya Hirose, Obu (JP); and Franz Rauh, Markt Indersdorf (DE)
Assigned to SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Jun. 22, 2023, as Appl. No. 18/339,247.
Claims priority of application No. 2022-110248 (JP), filed on Jul. 8, 2022.
Prior Publication US 2024/0011564 A1, Jan. 11, 2024
Int. Cl. F16J 15/3272 (2016.01)
CPC F16J 15/3272 (2013.01) 14 Claims
OG exemplary drawing
 
1. A wheel drive device that drives a wheel, comprising:
an output member; and
a wheel member that is connected to the output member, wherein the output member and the wheel member include a spigot fitting portion in which an outer peripheral spigot surface and an inner peripheral spigot surface are spigot-fitted,
an anti-fretting agent is applied to the spigot fitting portion, and
a seal member that prevents leakage of the anti-fretting agent is disposed between the output member and the wheel member, wherein the seal member is disposed between a pair of radial facing portions provided in the output member and the wheel member, respectively, and
wherein a radial gap is provided at a position being different from a position of the spigot fitting portion in the axial direction between the seal member and the spigot fitting portion, and is interposed between the output member and the wheel member in a radial direction, and a distance between the pair of radial facing portions at the radial gap is wider than a distance between the pair of radial facing portions at the spigot fitting portion.