Abstract: In the region in which a coil and a connector are provided, the leakage of a fluid to which coil and connector is prevented by a seal member, a passage extending from the seal member to a position in the vicinity of a terminal of the connector is formed. At the time of completion of the production of a solenoid valve assembly, an air-tightness test on the seal member can be conducted directly through the passage, so that the detection of damage to the seal member, the detection of bite into the seal member, the detection of a defect of the seal member and so on can be carried out at the time of completion of the production of the mentioned assembly. Namely, the detection of the sealability of the seal member is rendered possible.

Abstract: A solenoid valve appropriately used for pressure control of various fluids, or the like is concerned, and a solenoid valve is provided, which achieves improvement in sliding property of a plunger and is excellent in control characteristics. More specifically, a plunger 1 is substantially cylindrical-shaped and slidably supported at its outer peripheral side by a sleeve, the plunger being provided with a large-diameter portion 1a, which constitutes a sliding portion, the large-diameter portion 1a being alternately provided with a plurality of convex surface portions 1d and a plurality of groove portions 1e and having a cross sectional shape like petals.

Abstract: A substantially cylindrical annular space is formed by an outer circumferential surface of a cylindrical portion and a substantially flat surface portion of a substantially bottomed cylindrical sleeve, an inner circumferential surface of a case member, and a substantially flat surface portion of a bracket plate, a seal member being provided in this annular space. Thus, the simplification of the construction, and the miniaturization and the reduction of the weight is realized while a sealing performance between the inside and outside of the main body is maintained.

Abstract: A casing member is provided at one end thereof with a bent portion, and when a connector member is inserted from an opening on the other end side of the casing member, the connector member is positioned by the bent portion. Workability in assembling is improved and a burden on various solenoid constituents at the time of assembling can be decreased by sequentially inserting all the various solenoid constituents from the opening on the other end side of the casing member after insertion of the connector member, mounting a valve section after a bracket plate is mounted, and performing caulking with projections for caulking, which are provided on an end of a valve sleeve.

Abstract: A casing member is provided at one end thereof with a bent portion, and when a connector member is inserted from an opening on the other end side of the casing member, the connector member is positioned by the bent portion. Workability in assembling is improved and a burden on various solenoid constituents at the time of assembling can be decreased by sequentially inserting all the various solenoid constituents from the opening on the other end side of the casing member after insertion of the connector member, mounting a valve section after a bracket plate is mounted, and performing caulking with projections for caulking, which are provided on an end of a valve sleeve.

Abstract: In the region in which a coil and a connector are provided, the leakage of a fluid to which coil and connector is prevented by a seal member, a passage extending from the seal member to a position in the vicinity of a terminal of the connector is formed. At the time of completion of the production of a solenoid valve assembly, an air-tightness test on the seal member can be conducted directly through the passage, so that the detection of damage to, bite into and a defect of the seal member can be carried out at the time of completion of the production of the mentioned assembly. Namely, the detection of the sealability of the seal member is rendered possible.

Abstract: A substantially cylindrical annular space is formed by an outer circumferential surface of a cylindrical portion 4a and a substantially flat surface portion 4b of a substantially bottomed cylindrical sleeve 4, an inner circumferential surface of a case member 9, and a substantially flat surface portion 12a of a bracket plate 12, a seal member 10 being provided in this annular space. Thus, the simplification of the construction, and the miniaturization and the reduction of the weight is realized while a sealing performance between the inside and outside of the main body is maintained.

Abstract: A solenoid valve appropriately used for pressure control of various fluids, or the like is concerned, and a solenoid valve is provided, which achieves improvement in sliding property of a plunger and is excellent in control characteristics. More specifically, a plunger 1 is substantially cylindrical-shaped and slidably supported at its outer peripheral side by a sleeve, the plunger being provided with a large-diameter portion 1a, which constitutes a sliding portion, the large-diameter portion 1a being alternately provided with a plurality of convex surface portions 1d and a plurality of groove portions 1e and having a cross sectional shape like petals.