Idler or roller device
AssigneeAktiebolaget Skf
InventorsTorbjorn Hedman, Romuald Lescorail, Frederic Liege, Nicolas Tronquoy
Life of this patent
Estimating the term…
Abstract
A tension roller or reel device for a torque transmission element. The device comprises at least one bearing having one inner race, one outer race and at least one row of rolling elements between the inner race and the outer race, a pulley on top of the outer race, and a retaining screw inserted into a central bore of the inner race. The bore of the inner race is provided with a circumferential cavity in which a retaining ring is fitted securely and integrally, the retaining ring comprising an interaction feature providing interaction with the screw so as to allow an axial immobilization of the screw in relation to the bearing.
Claims20
A tension roller or reel device for a torque transmission element comprising:
- at least one bearing having one inner ring having a radially outwardly facing inner race and a radially inwardly facing annular surface, the at least one bearing also including one outer ring having a radially inwardly facing outer race and at least one row of rolling elements between the inner race and the outer race,
- a pulley on the outer race, and
- a retaining screw inserted into a central bore of the inner race,
- wherein the radially inwardly facing annular surface includes a first portion having a first diameter and a second portion having a second diameter greater than the first diameter, and wherein the retaining ring is configured to immobilize the screw in relation to the bearing, the retaining ring being integrally mounted in the second portion in direct contact with the inwardly facing annular surface.
A tension roller or reel device for a torque transmission element comprising:
- at least one bearing having one inner race, one outer race and at least one row of rolling elements between the one inner race and the one outer race,
- a pulley on top of the outer race, and
- a retaining screw inserted into a central bore of the inner race,
- wherein the bore of the inner race includes a circumferential cavity in which a retaining ring is fitted securely and integrally, the retaining ring comprising immobilization means for immobilizing the screw in relation to the bearing, and
- wherein the cavity provided in the bore of the inner race extends axially between one extremity of the bore and a shoulder formed between a cylindrical surface forming the cavity and a cylindrical surface with a smaller diameter forming the bore.
A tension roller or reel device for a torque transmission element comprising:
- at least one bearing having one inner ring having a radially outwardly facing inner race and a radially inwardly facing annular surface, the at least one bearing also including one outer ring having a radially inwardly facing outer race and at least one row of rolling elements between the inner race and the outer race,
- a pulley on the outer race, and
- a retaining screw inserted into a central bore of the inner race,
- wherein the radially inwardly facing annular surface includes a first portion having a first diameter and a second portion having a second diameter greater than the first diameter, and further including a retaining ring fitted securely in the second portion in direct contact with the inwardly facing annular surface, the retaining ring forming a friction fit or an interference fit with the retaining screw for securing the retaining screw in the bore.
Dependencies are inferred from the claim text.