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

Claim 16:
17. A valve device comprising:
a housing including a flow path in which a fluid flows;
a flow path formation member defining a flow path hole through which the fluid in the flow path passes, the flow path formation member having an opening surface in which the flow path hole is opened;
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 is slidable while facing the opening surface of the flow path formation member, the rotor being configured to increase or decrease an opening degree of the flow path hole with rotation of the shaft; and
a spring configured to energize the rotor toward the flow path formation member, wherein
the shaft is tiltably coupled to the rotor, to hold a contact state between the sliding surface of the rotor and the opening surface of the flow path formation member regardless of a position of the shaft,
the shaft has a fitting part fitted into a fitting hole provided in the rotor, and
the fitting hole of the rotor has a size in which a gap is formed between the fitting hole and the shaft, and the shaft is tiltable in a state where the fitting part is fitted,
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.