Easy-To-Assemble Floor Pump

An easy-to-assemble floor pump comprising:

• a base;
• a cylinder unit installed on the base in a hollow tubular shape along a first axis, the cylinder unit having a cylinder body, the cylinder body having a first end and a second end, and forming a first flow channel inside;
• a through hole formed along a second axis and penetrating through the second end of the cylinder body;
• a non-return seat disposed at the second end of the cylinder body, the non-return seat having a perforation, the perforation communicating with the through hole, the perforation and the through hole being located outside the base;
• and a piston installed in the cylinder body and capable of reciprocating;
• and
• a pressure gauge installed at the second end of the cylinder body along the second axis, the pressure gauge having a head part and a manifold part, the manifold part having a second flow channel formed inside, and an air outlet part disposed on the manifold part and forming a third flow channel inside;
• the manifold part passing through the through hole and the perforation and being installed in the non-return seat, the second flow channel of the manifold part and the third flow channel of the air outlet part communicating with the first flow channel;
• reciprocating movement of the piston causing air in the cylinder body to be capable of entering into the second flow channel and the third flow channel respectively through the first flow channel.