A dryer comprising: a drum including a drum body providing a space for storing clothes, a front cover forming a front surface of the drum body , a rear cover forming a rear surface of the drum body , and a drum inlet penetrating through the front cover and communicating with the inside of the drum body ; a fixing panel provided at a position apart from the rear cover ; a motor including a stator fixed to the fixing panel and a rotor rotated by the stator ; a hollow housing fixed to the fixing panel ; a first shaft having one end fixed to the rotor and the other end provided with a driving gear located inside the housing; a second shaft having one end provided with a driven gear located inside the housing and the other end penetrating through the fixing panel and fixed to the rear cover ; and a plurality of interlocking gears provided rotatably in the housing and transmitting a rotational force of the driving gear (631a, 63 1b) to the driven gear , wherein a driving gear shaft is formed on the other end portion of the first shaft , and a first shaft hole for allowing the driving gear shaft to be inserted therethrough is formed on an end portion of the second shaft , to make the first shaft and the second shaft rotate on the same rotation axis, wherein the first shaft and the driven gear are rotatably coupled with each other in a coaxial state by inserting the driving gear shaft into the first shaft hole , and characterized in that each of the interlocking gears comprises a first gear rotating while being meshed with the driving gear , and a second gear rotating coaxially with the first gear and meshed with the driven gear , with a smaller diameter than the first gear . a drum including a drum body providing a space for storing clothes, a front cover forming a front surface of the drum body , a rear cover forming a rear surface of the drum body , and a drum inlet penetrating through the front cover and communicating with the inside of the drum body ; a fixing panel provided at a position apart from the rear cover ; a motor including a stator fixed to the fixing panel and a rotor rotated by the stator ; a hollow housing fixed to the fixing panel ; a first shaft having one end fixed to the rotor and the other end provided with a driving gear located inside the housing; a second shaft having one end provided with a driven gear located inside the housing and the other end penetrating through the fixing panel and fixed to the rear cover ; and a plurality of interlocking gears provided rotatably in the housing and transmitting a rotational force of the driving gear (631a, 63 1b) to the driven gear , wherein a driving gear shaft is formed on the other end portion of the first shaft , and a first shaft hole for allowing the driving gear shaft to be inserted therethrough is formed on an end portion of the second shaft , to make the first shaft and the second shaft rotate on the same rotation axis, wherein the first shaft and the driven gear are rotatably coupled with each other in a coaxial state by inserting the driving gear shaft into the first shaft hole , and characterized in that each of the interlocking gears comprises a first gear rotating while being meshed with the driving gear , and a second gear rotating coaxially with the first gear and meshed with the driven gear , with a smaller diameter than the first gear . <EOS>