Abstract

The invention describes a device for winding/unwinding a link, comprising: - an input shaft (10) and a hollow through output shaft (20), the two shafts being coaxial and able to rotate about a longitudinal axis (L), - a synchronous motor (30) with permanent magnets and comprising a rotor (31) that rotates as one with the input shaft (10), - a cycloidal reducer (50) comprising an eccentric cam (51) mounted so as to rotate as one with the input shaft (10), and a cycloidal disc (52) mounted so as to rotate as one with the cam (51), such that rotation of the cam (51) around the longitudinal axis (L) causes the cycloidal disc (52) to rotate according to an eccentric and cycloidal movement, and - a transmission member (60) suitable for transmitting an angular movement of the cycloidal disc (52) to the output shaft (20).

IPC Classes  ?

• F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

Abstract

The invention relates to a device for winding/unwinding a line suitable for transporting a fluid or transmitting energy and/or signals, comprising: - a spool (2) suitable for receiving the line in wound form, - a hollow through shaft (3) suitable for enabling the line or fluid to pass between a rotary joint and the spool, the hollow shaft (3) being rigidly connected to the spool (2) to rotate the spool about a longitudinal axis (X) of the shaft, - at least one synchronous motor having direct-drive permanent magnets comprising a stator with windings (10) suitable for being powered by an electrical, three-phase power supply and a rotor having the permanent magnets (11) opposite the windings (10) of the stator.

IPC Classes  ?

• B65H 75/44 - Constructional details
• H02K 1/27 - Rotor cores with permanent magnets
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
• H02G 11/02 - Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum

Abstract

The invention relates to a system (1) for transferring a magnetic link (2) between a first element and a second element rotatable relative to the first element, a first end of said link being adapted for attachment to the first element and a second end of the link being adapted for attachment to the second element, characterised in that it comprises: - a first portion (11, 13) adapted to be rigidly connected to the first element; - a second portion (21, 23) rotatable relative to the first portion and adapted to be rigidly connected to the second element so as to be rotated at the rotational speed of said second element; - a third portion (30, 31) rotatable relative to the first and second portions; - a coupling member (40, 45) for coupling the second and third portions, adapted to rotate the third portion at a speed equal to half the rotational speed of the second element, - two sets of two coaxial ferromagnetic surfaces for winding the magnetic link (2), a first set comprising a first surface rigidly connected to the first portion and a second surface rigidly connected to the third portion, a second set comprising a third surface rigidly connected to the second portion and a fourth surface rigidly connected to the third portion.

IPC Classes  ?

• H02G 11/02 - Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
• B65H 75/00 - Storing webs, tapes, or filamentary material, e.g. on reels

Abstract

The invention concerns a bobbin (1) for winding and unwinding a link such as a cable or similar, comprising: a central mandrel (10) comprising two opposing faces (11, 12) perpendicular to a rotational axis (13) of the bobbin (1), two sets of arms (21) each mounted on a respective opposing face of the central mandrel (10), each arm being in contact with an intermediate support positioned between the two ends of same, characterised in that the bobbin comprises a plurality of adjustment elements (30) each associated with a respective arm, the actuation of an adjustment element resulting in a force being applied to the associated arm of same through the intermediate support, the application of said force tending to vary the inclination of said arm around the intermediate support in such a way as to adjust the position of said arm in a plane essentially parallel to the rotational axis of the bobbin.

IPC Classes  ?

• B65H 75/14 - Kinds or types of circular or polygonal cross-section with two end flanges
• B65H 75/24 - Constructional details adjustable in configuration, e.g. expansible

Abstract

A magnetic coupler with hysteresis (1) comprises an inductor subassembly (2) and an armature subassembly (6) that are capable of rotating one with respect to the other. The inductor subassembly has a plurality of magnetic poles and the armature subassembly (6) has one or more armature permanent magnets with hysteresis (11, 12). The invention is notable in that the or each armature magnet is produced in the form of a ring of one piece in magnetic material with vertical hysteresis and has through-slots for attenuating radial currents each running in the direction of the circumferential spread of the ring. Application to limiting heating and reducing axial bulk.

IPC Classes  ?

• H02K 49/06 - Dynamo-electric clutches; Dynamo-electric brakes of the synchronous type