Garden tool and push rod mechanism

A garden tool, comprising:

• a body;
• and
• a push rod mechanism connected to the body;
• wherein the push rod mechanism comprises:
• an upper push rod and a lower push rod relatively extendible and retractable to the upper push rod;
• and
• a control mechanism, connected to the upper push rod and the lower push rod, wherein the control mechanism comprises a safety switch, an expansion-retraction locking assembly, an operating handle, and a trigger member configured to trigger the safety switch, and the expansion-retraction locking assembly comprises a limiting member capable of being operated to enter between the upper push rod and the lower push rod to limit an expansion and retraction of the upper push rod relative to the lower push rod, and a stopping member configured to maintain the limiting member in a position-limiting state;
• wherein the operating handle is configured to rotate around a pivot shaft between a first position and a second position, and the trigger member and the stopping member are connected to the pivot shaft and are driven by the operating handle;
• in response to the operating handle being in the first position, the stopping member abuts against the limiting member, the upper push rod is fixed relative to the lower push rod, the safety switch is not triggered by the trigger member, and the body is allowed to start;
• and
• in response to the operating handle being in the second position, the safety switch is triggered, the stopping member is separated from the limiting member, the upper push rod is movably connected to the lower push rod, and the body is limited from being started.

A push rod mechanism, applied to a lawn mower, wherein the push rod mechanism comprises:

• an upper push rod and a lower push rod relatively extendible and retractable to the upper push rod;
• and
• a control mechanism, connected to the upper push rod and the lower push rod, wherein the control mechanism comprises a safety switch, an expansion-retraction locking assembly, an operating handle, and a trigger member configured to trigger the safety switch, and the expansion-retraction locking assembly comprises a limiting member capable of being operated to enter between the upper push rod and the lower push rod to limit an expansion and retraction of the upper push rod relative to the lower push rod, and a stopping member configured to maintain the limiting member in a position-limiting state;
• wherein the operating handle is configured to rotate around a pivot shaft between a first position and a second position, and the trigger member and the stopping member are connected to the pivot shaft and are driven by the operating handle;
• in response to the operating handle being in the first position, the stopping member abuts against the limiting member, the upper push rod is fixed relative to the lower push rod, the safety switch is not triggered by the trigger member, and the garden tool is allowed to start;
• and
• in response to the operating handle being in the second position, the safety switch is triggered, the stopping member is separated from the limiting member, the upper push rod is movably connected to the lower push rod, and the garden tool is limited from being started.