Synthetic resin-made sliding bearing
AssigneeOiles Corporation
InventorsKouici Morishige, Takashi Horiguchi
Life of this patent
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Abstract
A sliding bearing 1 includes: an upper casing 2; a synthetic resin-made lower casing 3 which is superposed on the upper casing 2 so as to be rotatable about an axis O in a circumferential direction R relative to the upper casing 2; a synthetic resin-made sliding bearing piece 5 disposed in an annular space 4 between the upper casing 2 and the lower casing 3; and a synthetic resin-made seal member 8 for sealing respective other annular end portions, communicating with the outside, of a gap 6 on an inner peripheral side and a gap 7 on an outer peripheral side in a radial direction X between the upper casing 2 and the lower casing 3, the gap 6 and the gap 7 respectively communicating with the annular space 4 at their one annular end portions.
Claims8
A synthetic resin-made thrust sliding bearing comprising:
- a synthetic resin-made upper casing integrally including an annular upper casing base portion having an annular lower surface in an axial direction, an inner peripheral-side cylindrical suspended portion suspended from a radially inner peripheral end portion of the annular lower surface of the upper casing base portion, and an outer peripheral-side cylindrical suspended portion suspended from a radially outer peripheral end portion of the annular lower surface of the upper casing base portion;
- a synthetic resin-made lower casing integrally including an annular lower casing base portion having an annular upper surface in the axial direction and superposed on said upper casing so as to be rotatable about an axis relative to said upper casing and an annular protrusion protruding from the annular upper surface of the lower casing base portion toward the annular lower surface of the upper casing base portion;
- a synthetic resin-made sliding bearing piece disposed in an annular space between the annular lower surface of the upper casing base portion and the annular upper surface of the annular protrusion of the lower casing base portion and in an annular space between the outer peripheral surface of the inner peripheral-side cylindrical suspended portion and the cylindrical inner peripheral surface of the annular protrusion, so as to be brought at an axial annular upper surface and a radial cylindrical inner peripheral surface thereof into slidable contact with the annular lower surface of the upper casing base portion and a radial outer peripheral surface of the inner peripheral-side cylindrical suspended portion, while being brought at an axial annular lower surface and a radial cylindrical outer peripheral surface thereof into contact with an axial annular upper surface and a radial cylindrical inner peripheral surface of the annular protrusion;
- and a synthetic resin-made seal member having on a radially inner peripheral side thereof a flexible inner peripheral-side annular seal portion which is brought into contact with a radially inner peripheral surface of the inner peripheral-side cylindrical suspended portion of said upper casing so as to seal a gap between the inner peripheral-side cylindrical suspended portion of said upper casing and the annular protrusion of the lower casing base portion, having on a radially outer peripheral side thereof a flexible outer peripheral-side annular seal portion which is brought into contact with a radially inner peripheral surface of the outer peripheral-side cylindrical suspended portion of said upper casing so as to seal a gap between the outer peripheral-side cylindrical suspended portion of said upper casing and the annular protrusion of the lower casing base portion, and having connecting portions for connecting to each other the inner peripheral-side annular seal portion and the outer peripheral-side annular seal portion, wherein the inner peripheral-side annular seal portion and the outer peripheral-side annular seal portion are integrally molded with the connecting portions having respective columnar portions arranged in a plurality of hole portions in the annular upper surface of the annular protrusion of the lower casing base portion.
Dependencies are inferred from the claim text.