Back to results
US 2004/0168879 A1Published application
Clutch sleeve coupling device
AssigneeThales
InventorBela Skorucak
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeThales
InventorBela Skorucak
Estimating the term…
The invention relates to a device for coupling two shafts that are intended to rotate in the continuation of one another with respect to a casing (4). A dog clutch couples the two shafts. The device comprises clutch-release means allowing the dog clutch (9) to be uncoupled. According to the invention, the clutch-release means comprise a ramp (17) secured to the casing (4), the ramp (17) having a helical shape around the axis (1), a flat disk (19) secured to the first shaft (3) the plane of which is more or less perpendicular to the axis (1), an element (20) intended to roll between the ramp (17) and the disk (19) so as to cause a translational movement of the first shaft (3) with respect to the casing (4) more or less along the axis (1), the translational movement allowing the dog clutch (9) to be uncoupled. The specific structure of the clutch-release means enables the shafts to be uncoupled while they are in rotation.
A device for coupling two shafts (2, 3) that are intended to rotate with respect to a casing (4), in the continuation of one another more or less about an axis (1), the device comprising a dog clutch (9) allowing one of the shafts (3) to drive the other (2) and clutch-release means allowing the dog clutch (9) to be uncoupled, characterized in that the clutch-release means comprise a ramp (17) secured to the casing (4), the ramp (17) having a helical shape around the axis (1), a flat disk (19) secured to the first shaft (3) the plane of which is more or less perpendicular to the axis (1), an element (20) intended to roll between the ramp (17) and the disk (19) so as to cause a translational movement of the first shaft (3) with respect to the casing (4) more or less along the axis (1), the translational movement allowing the dog clutch (9) to be uncoupled.
The device as claimed in one of the preceding claims, characterized in that the shape of the ramp (17) allows the element (20) to rotate through about one revolution about the axis (1) during the clutch-release operation.
The device as claimed in one of the preceding claims, characterized in that it comprises first means (22) for keeping the element (20) pressed against the ramp (17) in the clutch-engaged position.
The device as claimed in one of the preceding claims, characterized in that it comprises a stop (26) to halt the rolling of the element (20) at the end of clutch release.
Dependencies are inferred from the claim text.