US 12,435,790 B2
Oil seal structure
Erika Ito, Tokyo (JP); Ayaka Yamamoto, Tokyo (JP); and Noriaki Suzuki, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Aug. 29, 2023, as Appl. No. 18/239,488.
Claims priority of application No. 2022-150215 (JP), filed on Sep. 21, 2022.
Prior Publication US 2024/0093782 A1, Mar. 21, 2024
Int. Cl. F16J 15/02 (2006.01)
CPC F16J 15/021 (2013.01) 17 Claims
OG exemplary drawing
 
1. An oil seal structure comprising:
a first member comprising a first surface having an opening, the opening communicating a space containing oil;
a second member comprising a second surface, the second surface facing the first surface;
an annular recess provided in the first surface of the first member in a manner of surrounding the opening, the annular recess including a bottom surface facing the second surface;
a seal member comprising an elastic material and accommodated within the annular recess, the seal member being in contact with the bottom surface and the second surface, the seal member being configured to separate a space between the first and second surfaces into a first space and a second space, the first space communicating with the opening; and
a covering disposed in the first space and including an oil-resistant material, the cover covering a surface of the seal member that faces toward the first space,
wherein at least a surface of the seal member that is in contact with oil is covered with the covering, and the seal member is accommodated in the annular recess, and
wherein the surface of the seal member that faces toward the first space includes at least a portion of a surface facing radially inward on the seal member that is annular.