Adjusting mechanism for nailing power of nailing gun

An adjusting mechanism for nailing power of nailing gun, comprising:

• a slot, which is arranged in an upper aluminum cap and is co-axial with an air cylinder;
• a balanced valve airtightly sliding in the slot, a front side of the balanced valve is exposed to a main chamber;
• a control chamber is defined by a rear side of the balanced valve together with an inner surface of an upper aluminum cap, a travel distance of the balanced valve is restricted between the air cylinder and a cushion seal;
• the cushion seal is arranged on a rear surface of the upper aluminum cap and positioned on an axial position adjusting mechanism;
• the position adjusting mechanism comprises:
• a set of screw rod and nut, the nut is fixed on the upper aluminum cap, and the end part of the screw rod is settled by a rotary knob which can drive the screw rod, and the head part of the screw rod is fixed with the cushion seal;
• the rotatable knob is connected to the screw rod by a first guidance key, and a guide groove is arranged on the surface of the screw rod so as to restrict the first guidance key to move along the axial line of the screw rod;
• the rotatable knob is connected to the nut by a second guidance key, and an annular groove is arranged on the nut to only allow the rotatable knob to rotate;
• an annular lining is arranged in the upper aluminum cap to connect with the cushion seal, so that the annular lining and the balanced valve are in an airtight sliding fit, and the annular lining, the rear side of the balanced valve and the inner surface of the upper aluminum cap define the control chamber;
• the position adjusting mechanism is an oblique mechanism, which comprises an axial slider and a lateral slider, wherein the axial slider and the lateral slider fit with each other by an oblique plane so as to change lateral movement into axial movement;
• a rotatable nut fits with the lateral slider by a screw thread so as to drive the lateral slider to move laterally;
• and the axial slider connects with the cushion seal.