Operating hinge for seat and seat lid of toilet bowl

Claim 2

An operating hinge for a seat and seat lid of a toilet bowl, comprising: a hinge case to be installed to a body of a toilet bowl; a shaft provided rotatably inside the hinge case to support the seat and seat lid; a stationary cam secured inside the hinge case and having formed therein a central hole through which the rotating shaft is axially penetrated; a cam provided inside the hinge case in a vis-vis relationship with the stationary cam and having formed therein a central hole through which the rotating shaft is axially penetrated, to be slidable on, and rotatable with, the rotating shaft; and a resilient member for urging the rotatable sliding cam toward the stationary cam; further comprising, to more positively control the rotation of the rotating shaft: a rubber ring fitted on the rotating shaft between the rotating shaft and the hinge case to abut the inner wall of the hinge case; a viscous oil applied between the periphery of the rubber ring and the hinge case inner wall the rubber ring abuts; and a means of adjusting a pressure the rubber ring applies to the inner wall of the hinge case.

Claim 3

The operating hinge according to claim 1, wherein the means of adjusting the pressure applied by the rubber ring comprises a flanged collar fitted on, and rotatably with, a small-diameter portion of the rotating shaft penetrated through a partition wall formed integrally in the hinge case, a rubber ring fitted on the periphery of the collar, a compression ring fitted axially slidably on the periphery of the collar to abut the rubber ring, a washer and a screw urging the compression ring axially.

Claim 4

An operating hinge for a seat and seat lid of a toilet bowl, including: a hinge case to be installed to a body of a toilet bowl; a shaft provided rotatably inside the hinge case to support the seat and seat lid; a stationary cam secured inside the hinge case and having formed therein a central hole through which the rotating shaft is axially penetrated; a cam provided inside the hinge case in a vis-vis relationship with the stationary cam and having formed therein a central hole through which the rotating shaft is axially penetrated, to be slidable on, and rotatable with, the rotating shaft; and a resilient member for urging the rotatable sliding cam toward the stationary cam; further comprising, to more positively control the rotation of the rotating shaft: a rubber ring fitted on the rotating shaft between the rotating shaft and the hinge case to abut the inner wall of the hinge case; a viscous oil applied between the outer periphery of the rubber ring and the inner wall of the hinge case to which the rubber ring is force-fitted; a means of adjusting a pressure the rubber ring applies to the inner wall of the hinge case; and a recess formed in the outer periphery of the rubber ring to receive and retain the viscous oil therein.

Claim 5

An operating hinge for a seat and seat lid of a toilet bowl, including: a hinge case to be installed to a body of a toilet bowl; a shaft provided rotatably inside the hinge case to support the seat and seat lid; a stationary cam secured inside the hinge case and having formed therein a central hole through which the rotating shaft is axially penetrated; a cam provided inside the hinge case in a vis-vis relationship with the stationary cam and having formed therein a central hole through which the rotating shaft is axially penetrated, to be slidable on, and rotatable with, the rotating shaft; and a resilient member for urging the rotatable sliding cam toward the stationary cam; further comprising, to more positively control the rotation of the rotating shaft: a rubber ring fitted on the rotating shaft between the rotating shaft and the hinge case to abut the inner wall of the hinge case; a viscous oil applied between the outer periphery of the rubber ring and the inner wall of the hinge case to which the rubber ring is force-fitted; a means of adjusting a pressure the rubber ring applies to the inner wall of the hinge case; and a recess formed in the outer periphery of the rubber ring to receive and retain the viscous oil therein.

Claim 6

An operating hinge for a seat and seat lid of a toilet bowl, including: a hinge case to be installed to a body of a toilet bowl; a shaft provided rotatably inside the hinge case to support the seat and seat lid; a stationary cam secured inside the hinge case and having formed therein a central hole through which the rotating shaft is axially penetrated; a cam provided inside the hinge case in a vis-vis relationship with the stationary cam and having formed therein a central hole through which the rotating shaft is axially penetrated, to be slidable on, and rotatable with, the rotating shaft; and a resilient member for urging the rotatable sliding cam toward the stationary cam; further comprising, to more positively control the rotation of the rotating shaft: a rubber ring fitted on the rotating shaft between the rotating shaft and the hinge case to abut the inner wall of the hinge case; a viscous oil being applied between the periphery of the rubber ring and the hinge case inner wall the rubber ring abuts; a means of adjusting a pressure the rubber ring applies to the inner wall of the hinge case, the means comprising a flanged collar fitted on, and rotatably with, a small-diameter portion of the rotating shaft penetrated through a partition wall formed integrally in the hinge case, a rubber ring fitted on the periphery of the collar, a compression ring fitted axially slidably on the periphery of the collar to abut the rubber ring, a washer and a screw urging the compression ring axially; and a recess formed in the periphery of the rubber ring to receive and retain the viscous oil therein.

Claim 7

An operating hinge for a seat and seat lid of a toilet bowl, including: a hinge case to be installed to a body of a toilet bowl; a shaft provided rotatably inside the hinge case to support the seat and seat lid; a stationary cam secured inside the hinge case and having formed therein a central hole through which the rotating shaft is axially penetrated; a cam provided inside the hinge case in a vis-vis relationship with the stationary cam and having formed therein a central hole through which the rotating shaft is axially penetrated, to be slidable on, and rotatable with, the rotating shaft; and a resilient member for urging the rotatable sliding cam toward the stationary cam; further comprising, to more positively control the rotation of the rotating shaft: a rubber ring fitted on the rotating shaft between the rotating shaft and the hinge case to abut the inner wall of the hinge case; a viscous oil being applied between the periphery of the rubber ring and the hinge case inner wall the rubber ring abuts; a means of adjusting a pressure the rubber ring applies to the inner wall of the hinge case, the means comprising a flanged collar fitted on, and rotatably with, a small-diameter portion of the rotating shaft penetrated through a partition wall formed integrally in the hinge case, a rubber ring fitted on the periphery of the collar, a compression ring fitted axially slidably on the periphery of the collar to abut the rubber ring, a washer and a screw urging the compression ring axially; and a recess formed in the periphery of the rubber ring to receive and retain the viscous oil therein.