CPC F16K 27/067 (2013.01) [F16K 5/06 (2013.01); F16K 11/0873 (2013.01)] | 7 Claims |
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.
|