Ratchet wrench

A ratchet wrench, including:

• a main body, including a head portion and a handle portion, the head portion defining a first compartment and a second compartment which are communicated with each other, two opposite sides of the head portion being respectively defined as an operational surface and as a working surface, the first compartment being disposed through the operational surface, the second compartment being disposed through the working surface;
• a lever member, including a driving portion and a lever portion which are connected with each other, the driving portion being rotatably inserted within the first compartment, the lever portion being swingable relative to the operational surface about the driving portion;
• a ratchet head, being rotatably received within the second compartment, including an annular toothed portion;
• a switch assembly, including a detent and a switch member, the detent being movably received within the second compartment, a toothed structure of the detent being engaged with the annular toothed portion of the ratchet head, two ends of the switch member being respectively connected with the detent and the driving portion so that the lever member and the switch assembly are cooperatively movable with each other;
• a cover assembly, including a lid member and a positioning member, the lid member including a base, a supporting portion and a plurality of restricting portions which are spaced apart from one another, the base having a through hole and including a first surface and a second surface which spacingly correspond to each other, the supporting portion protruding, in a radial direction of the through hole, beyond a periphery of the first surface of the base, the plurality of restricting portions protruding, in the radial direction of the through hole, beyond a periphery of the second surface of the base, the positioning member being disposed between the supporting portion and the plurality of restricting portions and engaged with the base, the positioning member being embedded within a grooved portion of the second compartment so that the lid member is positioned to the head portion and covers the second compartment, wherein the lid member is flush with the working surface.