Electric tool

1. An electric tool, comprising:

a clamp configured to switch between a mounting state in which a tip tool is mounted and a releasing state in which the tip tool is removed;

a clamp moving portion configured to move between a first position at which the clamp is in the mounting state and a second position at which the clamp is in the releasing state;

a clamp urging portion configured to urge the clamp moving portion to the first position;

a case accommodating at least a part of each of the clamp, the clamp moving portion, and the clamp urging portion;

a retaining portion configured to retain the clamp moving portion at the second position; and

a mounting operation portion configured to receive mounting operation for switching the clamp from the releasing state to the mounting state, wherein

when the mounting operation portion receives the mounting operation, the retaining portion cancels retaining of the clamp moving portion at the second position.

2. The electric tool according to claim 1 , wherein

the clamp moving portion includes a shaft portion that is connected to the clamp and moves between the first position and the second position,

the retaining portion includes an engaging portion that moves to approach or separate from a shaft center of the shaft portion, and

the shaft portion includes a recessed portion in a side surface, the recessed portion being engaged with the engaging portion when the clamp moving portion is at the second position.

3. The electric tool according to claim 1 , wherein

the clamp moving portion includes a shaft portion that is connected to the clamp and moves between the first position and the second position,

the shaft portion includes one end portion and an other end portion, and the one end portion is connected to the clamp,

the retaining portion includes a cam,

the cam includes a cam surface configured to move the shaft portion by turning while abutting on the other end portion of the shaft portion,

the cam surface includes a distal portion far from the clamp and a proximal portion close to the clamp, and

the clamp moving portion is at the first position when the distal portion of the cam abuts on the other end portion of the shaft portion, and the clamp moving portion is at the second position when the proximal portion of the cam abuts on the other end portion of the shaft portion.

4. The electric tool according to claim 1 , wherein

the clamp is positioned on a bottom surface side of the case, and

the mounting operation portion is positioned on a side surface side of the case.

5. The electric tool according to claim 1 , further comprising

a releasing operation portion configured to receive releasing operation for switching the clamp from the mounting state to the releasing state, wherein

at least a part of the releasing operation portion is exposed from the case, and the clamp moving portion moves from the first position to the second position when releasing operation is received in a direction different from that in the mounting operation of the mounting operation portion.

6. The electric tool according to claim 5 , wherein

when the releasing operation portion receives releasing operation of turning from a surface of the case, the clamp moving portion moves from the first position to the second position, and

the mounting operation portion moves in a direction of being pushed into the case along with the mounting operation.