Dense assembly motor

A dense assembly motor, comprising:

• a motor casing serving as a protective structure, and the interior of the motor casing being divided into a first accommodation space and a second accommodation space;
• wherein, the first accommodation space is used for accommodating a motor, and the motor comprises:
• a motor shell, wherein the motor shell is a hollow cylindrical body comprising two open ends and the motor shell is made of a magnetic material, and an interior of the motor shell is defined as an accommodation space;
• a magnet, wherein the magnet is cylindrical in shape and is disposed within the motor shell, and the magnet has a magnet length;
• and a coil winding, wherein the coil winding is located between the motor shell and the magnet, and the coil winding has a coil winding length greater than the magnet length;
• and
• the second accommodation space is used for passing a wire therethrough;
• wherein the motor casing and the motor shell are made of different materials, and the first accommodation space and the second accommodation space are connected to each other.