Pulley device
AssigneeAktiebolaget Skf
InventorsClaude Quincay, Mickael Cousinery
Life of this patent
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Abstract
A pulley device comprising a rolling bearing including an inner ring defining a central bore, and outer ring and rolling elements mounted between the inner ring and the outer ring, a pulley secured in rotation with the outer ring and provided with a feature for engaging with a transmission member. The pulley additionally includes a screw comprising a head and a shank housed in the central bore of the inner ring, the screw being configured to fix the pulley device to a motor support. The pulley device also comprises a first sleeve arranged between the inner ring and the screw, on the side of the motor support. The first sleeve includes an inner surface that has a frustoconical portion having an increasing diameter toward the head of the screw.
Claims19
A pulley device, comprising:
- a rolling bearing including:
- an inner ring defining a central bore,
- an outer ring, and
- rolling elements mounted between the inner ring and the outer ring;
- a pulley secured in rotation with the outer ring and provided with an element for engaging with a transmission member;
- a screw comprising a head and a shank housed in the central bore of the inner ring, the screw being configured to fix the pulley device to a motor support;
- a first sleeve arranged between the inner ring and the screw, on the side of the motor support;
- the first sleeve including an inner surface that has a frustoconical portion having an increasing diameter toward the head of the screw;
- and
- a second sleeve arranged radially between the inner ring and the screw, on the side of the head of the screw, the first sleeve and the second sleeve being configured to prevent contact between the screw and the inner ring.
A pulley device, comprising:
- a rolling bearing including:
- an inner ring defining a central bore,
- an outer ring, and
- rolling elements mounted between the inner ring and the outer ring;
- a pulley secured in rotation with the outer ring and provided with an element for engaging with a transmission member;
- a screw comprising a head and a shank housed in the central bore of the inner ring, the screw being configured to fix the pulley device to a motor support;
- a first sleeve arranged between the inner ring and the screw, on the side of the motor support;
- the first sleeve including an inner surface that has a frustoconical portion having an increasing diameter toward the head of the screw;
- a second sleeve arranged radially between the inner ring and the screw, on the side of the head of the screw, the second sleeve further comprising an inner surface that has a frustoconical portion having a diameter increasing toward the first sleeve.
Dependencies are inferred from the claim text.