Motor including tension member

An electric motor including a tension member, the electric motor comprising:

• a yoke assembly configured to form a magnetic field;
• an armature assembly formed by a coil wound on a core slot formed in a core and disposed inside the yoke assembly, so as to rotate about a rotating shaft;
• a front bush coupled to an outer side of the rotating shaft, so as to reduce a gap with peripheral parts;
• and
• a tension member fitted to the rotating shaft and disposed between the armature assembly and the front bush, so as to prevent a gap between the front bush and the armature assembly,
• wherein the tension member is formed in a shape in which a plurality of step parts is stacked in multiple steps, and
• wherein each of the plurality of step parts comprises:
• a step body formed of a ring shape;
• and
• an elastic plate formed by being bent in a central axis direction at an end of the step body and connected to another different step part.