Tubular induction motor with two directions of rotation for home-automation applications
AssigneeSomfy SAS
InventorsJean-Marc PERRET, Adrien Brondex
Life of this patent
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Abstract
Tubular induction motor (20; 30) with two directions of rotation, contained in a tube (11) of a tubular actuator designed to be installed in a building, comprising a squirrel cage rotor (24; 34) supported by bearings (26; 36; 46) and a stator (12) comprising a stack of metal laminations forming a central bore (12a) and centred in the tube, wherein a support part of a bearing (29; 37; 47) is centred in the central bore, wherein the bearing is of the plain and conductor type and wherein it is placed as close as possible to a short-circuiting ring (24c) of the rotor, preferably less than 2 mm and preferably less than 1 mm away.
Claims11
Tubular induction motor (20;
- 30) with two directions of rotation, contained in a tube (11) of a tubular actuator designed to be installed horizontally in a building, comprising a squirrel cage rotor (24;
- 34) supported by bearings (26;
- 36;
- 46) and a stator (12) comprising a stack of metal laminations forming a central bore (12a) and centred in the tube, wherein a support part of a bearing (29;
- 37;
- 47) is centred in the central bore, wherein the bearing is of the plain and conductor type and wherein it is placed as close as possible to a short-circuiting ring (24c) of the rotor, preferably less than 2 mm and preferably less than 1 mm away.
Dependencies are inferred from the claim text.