Ratchet wrench

Abstract

The invention relates to a ratchet wrench comprising: a shaft (10) connected at both ends to a working head (11) and a handle (12), the working head (11) having a cavity (111); a ratchet element (20) rotatably received in the cavity (111) and having a mounting portion (21) for assembly with a drive element; a pawl (30) housed in the cavity (111); a rotary knob (40) inserted into the working head (11) and having a body portion (41) extending into the cavity (111) and a selector portion (42) located outside the working head (11), the body portion (41) being provided with a plug-in hole (411) and a receiving hole (412);a fastening piece (50) inserted into the insertion hole (411) and having a hollowed portion (51) elastically insertable into the body portion (41), the fastening piece (50) defining the pawl (30) between the fastening piece (50) and the inner surface of the cavity (111); and an elastic pressing mechanism (60) received in the receiving hole (412) and elastically pressing against the pawl (30) to engage the pawl (30) with the ratchet member (20);