Thrust sliding bearing

摘要

A thrust sliding bearing includes: a synthetic resin-made upper casing; a synthetic resin-made lower casing which is superposed on the upper casing so as to be rotatable about an axis in a circumferential direction relative to the upper casing; a synthetic resin-made thrust sliding bearing piece disposed in an annular space between the upper casing and the lower casing; and a synthetic resin-made seal member for sealing respective other end portions, communicating with the outside, of a first gap on an inner peripheral side and a second gap on an outer peripheral side in a radial direction between the upper casing and the lower casing, the first gap and the second gap respectively communicating with the annular space at their one annular end portions.

主权项

1. A thrust sliding bearing comprising:
a synthetic resin-made upper casing having a lower surface, and integrally including an inner peripheral-side suspended cylindrical portion and an outer peripheral-side suspended cylindrical portion suspended from the lower surface of the upper casing; a synthetic resin-made lower casing having an upper surface and superposed on said upper casing so as to be rotatable about an axis relative to said upper casing; a synthetic resin-made thrust sliding bearing piece disposed in an annular space between the lower surface of the upper casing and the upper surface of the lower casing; and a synthetic resin-made seal member having on a radial inner peripheral side thereof an inner peripheral-side annular seal portion for sealing a gap between the inner peripheral-side suspended cylindrical portion of said upper casing and the lower casing, on a radial outer peripheral side thereof an outer peripheral-side annular seal portion for sealing a gap between the outer peripheral-side suspended cylindrical portion of said upper casing and the lower casing, and a plurality of connecting portions for connecting the inner peripheral-side annular seal portion and the outer peripheral-side annular seal portion to each other, wherein each of the plurality of connecting portions which is disposed between the thrust sliding bearing piece and the lower casing, and which is integrally connected at one end portion thereof to the inner peripheral-side annular seal portion and at another end portion thereof to the outer peripheral-side annular seal portion, has a radial connecting portion disposed between the inner peripheral-side annular seal portion and the outer peripheral-side annular seal portion, and wherein said lower casing has on the upper surface thereof upper surface grooves for receiving the radial connecting portion.