| 摘要 |
The present invention provides a valve device that can maintain the held state of a valve body. A valve device (14) that switches the supply of a washing liquid between a first flow channel (54) and a second flow channel (55), wherein: the valve device has a first liquid tube (44) having the first flow channel (54), a second liquid tube (45) provided concentrically with the first liquid tube (44) and having the second flow channel (55), a housing (36) to which a first valve chamber (37) and a second valve chamber (38) are provided, a dividing wall (49) disposed inside the housing (36) between the first liquid tube (44) and the second liquid tube (45), and a rib (46) provided to the housing (36) and supporting the dividing wall (49); the dividing wall (49) has a membranous valve body (50) that is elastically deformed by the pressure of the first valve chamber (37) and the second valve chamber (38) to open either the first flow channel (54) or the second flow channel (55) and close the other, and a frame (51) attached along the outer periphery of the valve body (50) and supported on the rib (46); and the rigidity of the frame (51) is higher than the rigidity of the valve body (50). |
