A motor includes: a stator including assemblies; and a rotor disposed on one side of the stator. Each of the assemblies includes: a bobbin; a core inserted into the bobbin; and a coil surrounding an outside of the bobbin. The bobbin includes: a main through hole into which the core is inserted; and a sub-through hole disposed in either one of a top surface and a bottom surface on one side of the main through hole. An inner space of the bobbin is communication with the outside of the bobbin through the sub-through hole.