Treadmill with axial electric motor

Patent metadata

Field	Value
Publication number	US-12434093-B2
Application number	US-201916976094-A
Country	US
Kind code	B2
Filing date	Feb 27, 2019
Priority date	Feb 28, 2018
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A gymnastic machine including a base structure having a front transmission assembly and a rear transmission assembly, wherein the base structure includes two lateral longitudinal members between which a sliding belt slides, a sliding belt, associated to the base structure, on which a user can perform a gymnastic exercise, wherein the sliding belt is configured to rotate by means of the front transmission assembly and rear transmission assembly according to a sliding direction, wherein the sliding belt is arranged between the two lateral longitudinal members and an electric axial motor, having at least one stator and at least one rotor, the electric axial motor being kinematically coupled to the front transmission assembly, or to the rear transmission assembly, for moving the sliding belt, the electric axial motor being of axial type.

First claim

The invention claimed is:

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.

Assignees

• Technogym Spa

Inventors

• Casoni Massimiliano
• Del Monaco Alessandro
• Gatti Davide

Classifications

• A63B22/0242

  with speed variation · CPC title

• H02K7/003

  Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28) · CPC title

• H02K21/24

  with magnets axially facing the armatures, e.g. hub-type cycle dynamos · CPC title

• H02K7/14

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• A63B21/0058

  using motors · CPC title