Device for winding/unwinding a link
AssigneeConductix Wampfler France
InventorsJean-Michel Berger, Bruno Parseihian, Yohan Fournier
Life of this patent
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Abstract
A device for winding/unwinding a link includes, but is not limited to, an input shaft and a hollow through output shaft, the two shafts being coaxial and movable in rotation about a longitudinal axis; a permanent magnet synchronous motor comprising a rotor integral in rotation with the input shaft; a cycloidal reducer comprising an eccentric cam mounted integral in rotation with the input shaft, and a cycloidal disc mounted integral in rotation with the cam, in such a way that a rotation of the cam about the longitudinal axis drives a rotation of the cycloidal disc in an eccentric and cycloidal movement; and a transmission member suitable for transmitting an angular displacement of the cycloidal disc to the output shaft.
Claims12
A device for winding or unwinding a link, comprising:
- an input shaft movable in rotation about a longitudinal axis;
- an output shaft substantially coaxial to the input shaft, the output shaft being a hollow through shaft arranged for a passage of the link between a reel and a rotating joint, the output shaft being adapted to drive the reel in rotation about the longitudinal axis;
- at least one permanent magnet synchronous motor comprising a rotor arranged around a first portion of the output shaft, the rotor being integral in rotation with the input shaft;
- a cycloidal reducer arranged around a second portion of the output shaft, the cycloidal reducer comprising at least one internal cam, an external crown and at least one cycloidal disc arranged between each cam and the crown, wherein each cam is mounted integral in rotation with the input shaft, the at least one cycloidal disc is mounted integral in rotation with each cam, and wherein each cam is eccentric, in such a way that a rotation of each cam about the longitudinal axis drives a rotation of the at least one cycloidal disc in an eccentric and cycloidal movement;
- and
- a transmission member suitable for transmitting an angular displacement of the at least one cycloidal disc to the output shaft, in such a way that an eccentric and cycloidal rotation of the at least one cycloidal disc drives a rotation about the longitudinal axis of the output shaft.
A winder of a link, the winder comprising:
- a reel;
- a winding or unwinding device including:
- an input shaft movable in rotation about a longitudinal axis,
- an output shaft substantially coaxial to the input shaft, the output shaft being a hollow through shaft arranged for the passage of the link between a reel and a rotating joint, the output shaft being adapted to drive the reel in rotation about the longitudinal axis,
- at least one permanent magnet synchronous motor comprising a rotor arranged around a first portion of the output shaft, the rotor being integral in rotation with the input shaft,
- a cycloidal reducer arranged around a second portion of the output shaft, the cycloidal reducer comprising at least one internal cam, an external crown and at least one cycloidal disc arranged between each cam and the crown, wherein each cam is mounted integral in rotation with the input shaft, the at least one cycloidal disc is mounted integral in rotation with each cam, and wherein each cam is eccentric, in such a way that a rotation of each cam about the longitudinal axis drives a rotation of the at least one cycloidal disc in an eccentric and cycloidal movement, and
- a transmission member suitable for transmitting an angular displacement of the at least one cycloidal disc to the output shaft, in such a way that an eccentric and cycloidal rotation of the at least one cycloidal disc drives a rotation about the longitudinal axis of the output shaft;
- the rotating joint;
- and
- a control device, wherein the control device is adapted to control the synchronous motor, in such a way that the control device and the winding or unwinding device provide a suitable winding or unwinding torque.
Dependencies are inferred from the claim text.