Improvement structure of main frame

The utility model discloses an improvement structure of main frame, including interior quick -witted case and outer case, quick -witted case in install on outer case's top, outer case's the inner chamber left and right sides all is equipped with the spout, slide bar A is all installed to the left and right sides of interior quick -witted case, slide bar A links to each other with the spout cooperation, buffer is installed with outer case's junction to interior quick -witted case. This improvement structure of main frame, quick -witted case pushes down to press and moves the buffering planking in the messenger, link to each other with the cooperation of first slider through positioning sliding plate, can make first slider slide on positioning sliding plate, can make the outer plate voltage of buffering move first spring and rocker arm, first spring pedestal passes through the second spring and links to each other with the rocker arm cooperation, can make rocker arm press moves the second spring, can absorb out