Handle mechanism with multiple stop locations and a lawn mower including the handle mechanism

A handle mechanism with multiple stop locations for a lawn mower, comprising:

• a handle rotatably coupled to the lawn mower, the handle comprising a first connecting rod and a second connecting rod, a handle rotating shaft with two ends thereof being fixedly connected with ends of the first and second connecting rods, respectively, and other ends of the first and second connecting rods being located at a same side of the handle rotating shaft;
• a location shifting element with a plurality of stop locations;
• and
• a locking mechanism that is automatically clamped with one of the plurality of stop locations of the location shifting element to fix the handle, the locking mechanism comprising:
• a location shifting assembly for changing the location of the locking mechanism relative to the plurality of stop locations and an operation assembly for controlling the location shifting assembly, the location shifting assembly comprising an automatically retractable pin mated with one of the plurality of stop locations of the location shifting element, and a spring member for ejecting the automatically retractable pin out of the stop location toward the direction of the location shifting element;
• and
• an operation assembly comprising an operation element having a first end for operating by the operator and a second end opposite to the first end connected to the automatically retractable pin, and a fixing element fixedly connected to the first connecting rod, and the operation element being rotatably connected with the fixing element, when the first end of the operation element being impelled to move toward the first connecting rod under an external force, the second end of the operation element driving the automatically retractable pin to move away from the location shifting element and being ejected out of the stop location.