Washing machine

A washing machine comprising:

• a tub;
• a drum rotationally provided inside the tub to receive an object to be washed;
• a pulsator rotationally provided inside the drum;
• an outer shaft connected to the drum and including a cavity;
• an inner shaft connected to the pulsator and arranged in the cavity;
• a first pulley including a first hub coupled to the outer shaft and a first spoke radially extending from the first hub and including a first spoke recess formed in front;
• and
• a second pulley including a second hub coupled to the inner shaft and a second spoke radially extending from the second hub and including a second spoke recess formed in back.

A washing machine comprising:

• a cabinet including a front plate, a rear plate, and side plates;
• a tub contained in the cabinet;
• a rotary body rotationally provided inside the tub;
• a rotary shaft connected to the rotary body;
• a driving motor configured to generate a driving force to drive the rotary shaft;
• and
• a pulley provided to transfer the driving force of the driving motor to the rotary shaft, formed to include a middle portion in a radial direction closer to the rear plate than outer portions in the radial direction, and including a hub coupled to the rotary shaft and a spoke radially extending from the hub and including a spoke recess formed in back.