Abstract: The present invention provides a throttle device for an engine enabling an operation of fitting a support shaft supporting an intermediate gear into a positioning hole and an operation of causing the intermediate gear and a counterpart gear to mate with each other to be easily performed when a throttle body-side assembly and a gear cover-side assembly, which have individually been assembled, are coupled to each other.

Abstract: Provided is a rotary type valve device capable of being easily assembled and securing desired sealing performance. The rotary type valve device includes a rotor having an internal passage formed around an axis and an opening portion which opens outward from the internal passage to an outer contour surface in a radial direction, a housing supporting the rotor to be rotatable around the axis and defining an axial passage communicating with the internal passage and a radial passage facing the outer contour surface and capable of communicating with the opening portion, a passage member disposed in the housing to define a part of the radial passage, and a biasing spring biasing the passage member toward the outer contour surface. The housing comprises a housing body accommodating the rotor, and a holding member coupled to the housing body and having a tubular portion holding the biasing spring and the passage member.

Abstract: A rotary type valve device includes a rotor having an internal passage and an opening portion which opens to an outer contour surface, a housing which supports the rotor to be rotatable and defines an axial passage communicating with the internal passage and a radial passage facing the outer contour surface and capable of communicate with the opening portion, a passage member disposed in the housing to define a part of the radial passage, and an annular seal member which seals a predetermined second clearance defined between the passage member and the housing, wherein the passage member includes an annular contact portion which is pressed so as to be in close contact with the outer contour surface by a pressure of a fluid flowing from the axial passage, and a pressed portion pressed by the pressure of the fluid flowing from the radial passage through the annular seal member.

Abstract: A rotary type valve device includes a rotor having an internal passage and an opening portion which opens to an outer contour surface, a housing which supports the rotor to be rotatable and defines an axial passage communicating with the internal passage and a radial passage facing the outer contour surface and capable of communicate with the opening portion, a passage member disposed in the housing to define a part of the radial passage, and an annular seal member which seals a predetermined second clearance defined between the passage member and the housing, wherein the passage member includes an annular contact portion which is pressed so as to be in close contact with the outer contour surface by a pressure of a fluid flowing from the axial passage, and a pressed portion pressed by the pressure of the fluid flowing from the radial passage through the annular seal member.

Abstract: Provided is a rotary type valve device capable of being easily assembled and securing desired sealing performance. The rotary type valve device includes a rotor having an internal passage formed around an axis and an opening portion which opens outward from the internal passage to an outer contour surface in a radial direction, a housing supporting the rotor to be rotatable around the axis and defining an axial passage communicating with the internal passage and a radial passage facing the outer contour surface and capable of communicating with the opening portion, a passage member disposed in the housing to define a part of the radial passage, and a biasing spring biasing the passage member toward the outer contour surface. The housing comprises a housing body accommodating the rotor, and a holding member coupled to the housing body and having a tubular portion holding the biasing spring and the passage member.