US 11,754,195 B2
Flow channel switching valve
Daisuke Kondo, Tokyo (JP); Kenichi Mochizuki, Tokyo (JP); Masashi Yamashita, Tokyo (JP); and Takamitsu Mano, Aichi (JP)
Assigned to FUJIKOKI CORPORATION, Tokyo (JP); and DENSO CORPORATION, Aichi (JP)
Appl. No. 17/613,217
Filed by FUJIKOKI CORPORATION, Tokyo (JP); and DENSO CORPORATION, Aichi (JP)
PCT Filed Apr. 27, 2020, PCT No. PCT/JP2020/017990
§ 371(c)(1), (2) Date Nov. 22, 2021,
PCT Pub. No. WO2020/235312, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 2019-095810 (JP), filed on May 22, 2019.
Prior Publication US 2022/0221079 A1, Jul. 14, 2022
Int. Cl. F16K 27/06 (2006.01); F16K 5/06 (2006.01); F16K 11/087 (2006.01)
CPC F16K 27/067 (2013.01) [F16K 5/06 (2013.01); F16K 11/0873 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A flow channel switching valve including a valve body provided with a valve chamber and a plurality of flow channels that communicate with the valve chamber, a valve member that is rotatably housed in the valve chamber and that switches connection of the flow channels in accordance with a rotational position, a valve stem that is attached to the valve member along a rotation axis of the valve member, and a drive unit that rotates the valve member via the valve stem, the flow channel switching valve comprising:
a rotation angle output shaft that is press-fitted into an attachment hole provided in an end surface of the valve stem; and
a rotation angle detection unit that detects a rotation angle of the rotation angle output shaft around the rotation axis,
wherein the rotation angle output shaft has a small-diameter portion, a medium-diameter portion, and a large-diameter portion that are sequentially connected in a direction of the rotation axis, and is supported rotatably around the rotation axis in the attachment hole in an inserted state before being press-fitted into the attachment hole, and
wherein the attachment hole is provided with a press-fit portion into which one portion of the small-diameter portion, the medium-diameter portion, and the large-diameter portion is press-fitted.