Work tool

Power tool that drives a tool bit (10) removably held between a first clamp part (122; 222) and a second clamp part (124; 224)， having a first shaft (120; 220) engaging the first clamp part (122 ; 222)， a second shaft (123; 223) having the second clamping part (124; 224)， a holding component (135; 231， 233) which holds the second shaft (123; 223) in relation to the first shaft (120; 220) holds tight a moving member (131; 242， 243) that moves the holding member (135; 231， 233)， and a first biasing member (137; 244) which biases the moving member (131; 242， 243)， in which the first shaft (120; 220) and the second shaft (123; 223) are arranged such that their axes extend parallel to each other and the second shaft (123; 223) is arranged inside the first shaft (120; 220)， the holding component (135; 231， 233) is between a first position in which the holding component (135; 231， 233) can hold the second shaft (123; 223)， and a second position in which the holding component (135; 231 ， 233) cannot hold the second shaft (123; 223)， can move it， the moving member (131; 242， 243) moves the holding member (135; 231， 233) from the first position to the second position， and when the holding member (135; 231， 233) is in the second position， the first biasing member (137; 244) biasing the moving member (131; 242， 243) and thereby preventing the moving member (131; 242， 243) from moving . [Problem] To provide a technique in which the tip tool of a work tool can be held using a simple action. [Solution] There is configured an electric vibration tool (1) provided with a spindle (120) and a clamp shaft (123)， the electric vibration tool (1) driving a blade (10) sandwiched by an outer flange (122) and a clamp head (124). The electric vibration tool (1) has: a ball (135) for holding the clamp shaft (123) against the spindle (120) in a fixed manner; a ball-holding member (131) for moving the ball (135); and a first coil spring (137) for urging the ball-holding member (131). The ball (135) is configured so as to be capable of moving between a first position at which the clamp shaft (123) can be held and a second position at which the clamp shaft (123) cannot be held. The ball-holding member (131) is configured so as to move the ball (135) from the first position to the second position. The first coil spring (137) is configured so as to urge the ball-holding member (131) and restrict movement of the ball-holding member (131) when the ball (135) is at the second position. [Problem] To provide a technique in which the tip tool of a work tool can be held using a simple action. [Solution] There is configured an electric vibration tool (1) provided with a spindle (120) and a clamp shaft (123)， the electric vibration tool (1) driving a blade (10) sandwiched by an outer flange (122) and a clamp head (124). The electric vibration tool (1) has: a ball (135) for holding the clamp shaft (123) against the spindle (120) in a fixed manner; a ball-holding member (131) for moving the ball (135); and a first coil spring (137) for urging the ball-holding member (131). The ball (135) is configured so as to be capable of moving between a first position at which the clamp shaft (123) can be held and a second position at which the clamp shaft (123) cannot be held. The ball-holding member (131) is configured so as to move the ball (135) from the first position to the second position. The first coil spring (137) is configured so as to urge the ball-holding member (131) and restrict movement of the ball-holding member (131) when the ball (135) is at the second position.