Patent ID: 11892095
Assignee: DENSO CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B  Y | IPC B  F

Claim 6:
7. A valve device through which a fluid flows, comprising:
a driving source making a rotational motion;
a rotated part provided rotatably around a predetermined axis;
a fluid passage portion having a flow hole for passing the fluid;
a gear mechanism having a plurality of gears to transmit the rotational motion of the driving source to the rotated part by engagement between the plurality of gears to rotate the rotated part; and
a biasing part biasing the rotated part toward one side in a circumferential direction about the predetermined axis, wherein
the rotated part includes a rotor increasing or reducing an opening of the flow hole in conjunction with rotation of the rotated part,
the biasing part is a coil spring wound around the predetermined axis and produces energization force biasing the rotated part toward the one side in the circumferential direction by elastic deformation of the biasing part twisted in the circumferential direction,
the rotated part is rotated by the rotational motion of the driving source while being biased by the biasing part toward the one side in the circumferential direction, and
the coil spring is disposed between the gear mechanism and the rotor in an axial direction of the predetermined axis, and is connected to the rotor.