Core of inflatable pump

A core of an inflatable pump comprising:

• a casing base comprising
• a base portion having two ends;
• a rear portion formed at one of the two ends of the base portion;
• a transmission space formed between the rear portion and the base portion;
• a cylinder portion formed at the rear portion, extending away from the base portion, and having a connection end portion;
• and
• two triangular sidewall portions respectively formed at two opposite sides of the transmission space between the base portion and the rear portion, extending from the rear portion to the other one of the two ends of the base portion;
• a casing cover detachably and tightly disposed on the casing base and closing the transmission space;
• an electric motor disposed at the base portion of the casing base and comprising
• a rotor having an end extending into the transmission space of the casing base;
• a piston rod disposed in the cylinder portion of the casing base and extending into the transmission space of the casing base;
• a transmission set disposed in the transmission space of the casing base and connected between the piston rod and the rotor of the electric motor;
• and
• an inflation adapter disposed at the connection end portion of the cylinder portion of the casing base.