Electric pump

An electric pump provided with a pump unit configured to discharge working fluid by being rotationally driven by an electric motor, the electric pump comprising:

• the pump unit including a rotating member having an engaging hole;
• a transmission shaft configured to transmit rotational driving force from the electric motor to the rotating member of the pump unit;
• a rotation-detection shaft provided coaxially with the transmission shaft, the rotation-detection shaft being configured to rotate together with the rotating member;
• and
• a rotation detector unit configured to detect rotation of the rotation-detection shaft, wherein
• the rotation-detection shaft has:
• an engagement portion configured to engage with the rotating member;
• and a detection-target portion facing the rotation detector unit,
• an outer diameter of the detection-target portion is set so as to be larger than an outer diameter of the engagement portion, and
• the rotation-detection shaft engages with the engaging hole from a first end side of the rotating member and the transmission shaft engages with the engaging hole from a second end side of the rotating member, so that the rotation-detection shaft is connected to the transmission shaft via the rotating member.