Inflator with an air guiding sleeve

An inflator with an air guiding sleeve, comprising:

• a chassis, and a core and a drive motor installed in the chassis, and the drive motor being provided for driving the core to inflate an external object, characterized in that the inflator further comprises the air guiding sleeve and a cooling fan, and the air guiding sleeve has an air guiding hole penetrating through the air guiding sleeve, and the drive motor comprises a main body and a shaft rotatably installed to the main body, and the shaft has an end protruded from the main body for driving the core to move, and the another end protruded from the main body for coupling the cooling fan, air and the guiding sleeve includes a positioning shell and an air guiding ring coupled to the positioning shell, and the positioning shell is installed to the chassis and/or the drive motor, and an external surface of the positioning shell abuts against the chassis, and the air guiding ring encloses the cooling fan, and the core is detachably coupled to the chassis;
• and the positioning shell has a notch concavely formed at an end of the positioning shell away from the air guiding ring;
• and the positioning shell has a cross-sectional area in an octagonal shape, and the air guiding ring has a cross-sectional area in a circular shape, and the positioning shell cross-sectional area is greater than the cross-sectional area of the air guiding ring.