US 12,434,093 B2
Treadmill with axial electric motor
Massimiliano Casoni, Cesena (IT); Alessandro Del Monaco, Cesena (IT); and Davide Gatti, Cesena (IT)
Assigned to Technogym S.p.A, Cesena (IT)
Appl. No. 16/976,094
Filed by Technogym S.P.A, Cesena (IT)
PCT Filed Feb. 27, 2019, PCT No. PCT/IT2019/050044
§ 371(c)(1), (2) Date Aug. 27, 2020,
PCT Pub. No. WO2019/167096, PCT Pub. Date Sep. 6, 2019.
Claims priority of application No. 102018000003113 (IT), filed on Feb. 28, 2018.
Prior Publication US 2021/0086026 A1, Mar. 25, 2021
Int. Cl. A63B 22/02 (2006.01); H02K 7/00 (2006.01); H02K 21/24 (2006.01)
CPC A63B 22/0235 (2013.01) [A63B 22/0242 (2013.01); H02K 7/003 (2013.01); H02K 21/24 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A treadmill, comprising:
a base structure having a front transmission assembly and a rear transmission assembly, wherein said base structure comprises two lateral longitudinal members between which a sliding belt slides;
wherein said sliding belt is associated to said base structure;
wherein said base structure is configured for a user to perform a gymnastic exercise;
wherein said sliding belt is configured to rotate by said front transmission assembly and rear transmission assembly according to a sliding direction (X), wherein said sliding belt is arranged between said two lateral longitudinal members;
an electric axial motor, having at least one stator and two rotors, said electric axial motor being kinematically coupled to said front transmission assembly or to said rear transmission assembly for moving said sliding belt;
wherein said electric axial motor is of axial flow type and a magnetic field flow is directed parallel with respect to an axis of the electric axial motor;
wherein the electric axial motor is arranged internally of one of the lateral longitudinal members;
wherein said at least one stator is directly or indirectly fixed to one of said lateral longitudinal members;
wherein said two rotors comprises a first rotor, keyed to a drive shaft or an appendix of the rear transmission assembly, and a second rotor provided with a plurality of permanent magnets, keyed to said drive shaft or said first rotor;
wherein said rear transmission assembly comprises a rear cylinder; and
wherein said first rotor is provided with a plurality of permanent magnets and is integrated in said rear cylinder.