SOLENOID VALVE AND FLOW PASSAGE DEVICE

To miniaturize a solenoid valve with respect to a large flow rate.SOLUTION: A solenoid valve includes: a body part 40 including a solenoid 42 for moving a movable part 50 in an axial direction and a cover 41 for housing the solenoid 42; a storage part 90 capable of storing fluid flowing in a first flow passage part 21; and a connection flow passage part 55 for connecting the outside of a solenoid valve 30 and the inside of the storage part 90. The movable part 90 includes: a shaft part 51 protruding to the other direction side in the axial direction from the body part 40 and inserted in a second flow passage part 22; a valve body part 52b provided at the shaft part 51, and for closing a hole part 25 from one side in the axial direction in a closed state; and a first pressure receiving surface 54a facing one side in the axial direction, and for constituting a part of the inside surface of the storage part 90. The connection flow passage part 55 connects the first flow passage part 21 and the storage part 90 in a closed state. The storage part 90 is located further at the one side in the axial direction than the valve body part 52b. In the closed state, it is cut off from the second flow passage part 22.SELECTED DRAWING: Figure 4 【課題】大流量に対して、電磁弁を小型化する。【解決手段】可動部５０を軸方向に移動させるソレノイド４２とソレノイド４２を収容するカバー４１とを有する本体部４０と、第１流路部２１を流れる流体を収容可能な収容部９０と、電磁弁３０の外部と収容部９０の内部とを繋ぐ接続流路部５５と、を備える。可動部９０は、本体部４０から軸方向他方側に突出し、第２流路部２２の内部に挿入されるシャフト部５１と、シャフト部５１に設けられ、閉状態において軸方向一方側から孔部２５を閉塞する弁体部５２ｂと、軸方向一方側を向き、収容部９０の内側面の一部を構成する第１受圧面５４ａと、を有する。接続流路部５５は、閉状態において第１流路部２１と収容部９０とを繋ぐ。収容部９０は、弁体部５２ｂよりも軸方向一方側に位置する。閉状態において第２流路部２２と遮断される。【選択図】図４