초록 ▼

A variable speed device pulley is disclosed of the type comprising a fixed pulley half and movable pulley half facing each other and fixed for rotation with a rotatable shaft. An annular abutment is fixed for rotation with and bears axially against the rotatable shaft. A return spring, e.g., a diaph

A variable speed device pulley is disclosed of the type comprising a fixed pulley half and movable pulley half facing each other and fixed for rotation with a rotatable shaft. An annular abutment is fixed for rotation with and bears axially against the rotatable shaft. A return spring, e.g., a diaphragm spring, bears axially against the abutment member to urge the movable pulley half toward the fixed pulley half. The annular abutment member comprises a bearing component and a contact component bearing axially against each other. The bearing component is fixed relative to the rotatable shaft and the bearing component is fixed relative to the return spring. The contact component is floatingly mounted on the bearing component for limited shifting movement transversely relative to the axis of the rotatable shaft. The floating mounting may comprise elastic bushes or rings, leaf springs or an intermediate component with sliders. The floating mounting may also permit axial and/or circumferential shifting of the contact component.

대표청구항 ▼

A variable speed drive pulley comprising a fixed pulley half and a movable pulley half facing each other and fixed for rotation with a rotatable shaft, said fixed pulley half being axially connected in operation to said rotatable shaft, said movable pulley half being mounted for axial movement relat

A variable speed drive pulley comprising a fixed pulley half and a movable pulley half facing each other and fixed for rotation with a rotatable shaft, said fixed pulley half being axially connected in operation to said rotatable shaft, said movable pulley half being mounted for axial movement relative to said rotatable shaft, at least part of a side of one of said pulley halves being frustoconical, an annular abutment member fixed for rotation with and bearing axially against said rotatable shaft, resilient return means comprising a diaphragm spring bearing axially against said annular abutment member and urging said movable pulley half in the direction of said fixed pulley half, said annular abutment member comprising a bearing component and a contact component bearing axially against each other, said bearing component being fixed axially relative to said rotatable shaft, said diaphragm spring being fulcrumed on said contact component, said diaphragm spring being fixed axially and circumferentially relative to said contact component, the improvement comprising means floatingly mounting said contact component with respect to said bearing component for permitting limited shifting movement with said diaphragm spring transversely relative to the axis of said rotatable shaft.