Patent ID: 11940057
Assignee: DENSO CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 18:
19. A fluid circulation circuit comprising:
a housing including a flow path in which a fluid flows;
a plurality of devices through which the fluid path passes; and
a valve device configured to regulate a flow rate of the fluid passing through the plurality of devices, wherein
the valve device includes
a flow path formation member provided with at least one flow path hole through which the fluid passes,
a drive part configured to output a rotational force,
a shaft configured to be rotatable about a predetermined axis by the rotational force output from the drive part,
a rotor having a sliding surface that slides while facing an opening surface of the flow path formation member where the flow path hole is opened, the rotor being configured to increase or decrease an opening degree of the flow path hole with rotation of the shaft,
a spring configured to energize and bias the rotor toward the flow path formation member, and
a coupling structure configured to tiltably couple the shaft to the rotor, and to hold a contact state between the sliding surface and the opening surface regardless of a position of the shaft,

the rotor, the flow path formation member, the shaft and the spring are located in the flow path of the housing,
the shaft has a first end portion to which the rotational force is transmitted from the drive part, and a second end portion opposite to the first end portion in an axial direction, and
the spring extends in the axial direction from the coupling member to the first end portion of the shaft.