Reversing control mechanism of pneumatic tools

A reversing control mechanism of pneumatic tool, which is assembled correspondingly to the rear end of the pneumatic portion of the pneumatic tool, enabling to the switch the opening/closing of air pressure path and air inlet/exhaust mode of the pneumatic tool;

• said reversing control mechanism comprising:
• a rear cover, comprising an assembly end and a rear side;
• said assembly end is assembled at the rear end of the pneumatic portion of the pneumatic tool;
• said rear cover is also provided with a trough, at bottom of which an air inlet hole and two exhaust holes are extended to the assembly end;
• a first exhaust channel and a second exhaust channel are arranged at left and right sides at top of the trough;
• a reducing through-hole, set at the rear end of the trough of the rear cover for passing through the rear side of the rear cover;
• a diversion seat, comprising a cylinder and an expanding disc set at front end of the cylinder;
• of which said cylinder is located into the trough of the rear cover, and the expanding disc is abutted onto the assembly end of the rear cover;
• said cylinder is divided into a front section and a rear section;
• the exhaust channels are set at bottom of the front section, and a punching hole is set at bottom of the rear section;
• the first and second elongated punching channels are separately arranged on the exterior side of the rear section of the cylinder;
• moreover, the exhaust holes are separately set at upper part of the first and second elongated punching channels, and separately linked to the inner upper part of the cylinder;
• inlet holes are separately set at lower part of the first and second elongated punching channels, and separately linked to the inner lower part of the cylinder;
• besides, the first and second air diversion channels are set symmetrically at two sides of the expanding disc;
• a flow switch control seat, which is rotarily assembled into the rear section of the cylinder of the diversion seat;
• an exhaust switch groove and an inlet switch groove are separately set at upper and lower sides of the flow switch control seat;
• an axial notch recessed backwards is set at front end of the flow switch control seat;
• said axial notch is only connected with the exhaust switch groove, and separated from the inlet switch groove;
• of which, a knob portion is formed at the rear end of the flow switch control seat, and located correspondingly to the reducing through-hole at the rear end of the trough on the rear cover, enabling the knob portion to be exposed.