| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow sensor having a long life.SOLUTION: A flow detection device 10 comprises a sensor body 41 secured to a tube member 20 and extending to the inside of the tube member 20, a revolving shaft 71 provided in the sensor body 41, a paddle 60 supported by the revolving shaft, and a detection part 50. The paddle 60 is provided with a second contact face 63a disposed at a position facing a first flat face 25 of the tube member 20 in a first rotation direction R1 separating from an initial position P1 abutting on a second protrusion 46 of the sensor body 41, and a third contact face 63b disposed at a position facing a contact face 48a of a first contact part 48 of the sensor body 41 in the first rotation direction R1.SELECTED DRAWING: Figure 2 |
