초록 ▼

A 3-position 3-way solenoid valve for anti-lock brake system is disclosed having a hinge structure. The solenoid valve includes a cylindrical housing and two covers hermetically coupled to both ends of the housing. The housing and two covers define an inner chamber which is partitioned into first an

A 3-position 3-way solenoid valve for anti-lock brake system is disclosed having a hinge structure. The solenoid valve includes a cylindrical housing and two covers hermetically coupled to both ends of the housing. The housing and two covers define an inner chamber which is partitioned into first and second chambers by a barrier, and first to third ports are communicated with the first chamber. The second chamber contains an armature, a solenoid assembly and a core, and the armature is fixed to a push rod which extends into the first chamber through a barrier hole. An end of the push rod in the first chamber is fitted to a ball slider within which a ball is included interposing a first spring. A second spring interposes between the cover defining the first chamber and one end of the ball slider. A step is formed on the outer wall of the ball slider. A valve lever extends substantially parallel with the ball slider to be caught with the step. A spool is fixed to one end of the valve lever in parallel with the valve lever. The valve lever is connected to a supporting rod by a pin to rock both ends of the valve lever, and the supporting rod is fixed to the cover. A third spring is disposed between the valve lever and the cover to be coaxial with the ball slider.

대표청구항 ▼

A solenoid valve comprising: a valve body having a housing with a first port for receiving fluid from a pressure generating source, a second port for admitting/discharging the fluid and a third port for exhausting the fluid, and first and second covers hermetically coupled to said housing for closin

A solenoid valve comprising: a valve body having a housing with a first port for receiving fluid from a pressure generating source, a second port for admitting/discharging the fluid and a third port for exhausting the fluid, and first and second covers hermetically coupled to said housing for closing opposite open ends of said housing; a barrier wall for partitioning a chamber formed by said housing and said first and second covers into first and second chambers, said first chamber being communicated with said first, second and third ports, said barrier wall having a barrier hole; actuating means extending from said first chamber to said second chamber through said barrier hole for communicating said second port with one of said first and third ports, and interrupting fluid communication between said first to third ports by closing one of said first and third ports and both of said first and third ports in response to electric signals, said actuating means being located at a first position of opening said first port and closing said third port in a normal state that no electric signal is supplied, at a second position of closing said first and third ports in a first active state that a primary signal having a half of maximum voltage to be applied is supplied, and at a third position of closing said first port and opening said third port in a second active state that a secondary signal having the maximum voltage is supplied; and a solenoid assembly for moving said actuating means located at said first position in said normal state to said second position in response to supplying of said primary electric signal and to said third position in response to supplying of said secondary electric signal, said solenoid assembly being composed of an annular solenoid coil, a bobbin wound by said solenoid coil and terminals electrically connected to said solenoid coil and exposed to the outside of said valve body and being disposed within said second chamber to surround said actuating means, wherein said first cover and said barrier wall define said first chamber, said second cover and said barrier wall define said second chamber, said first port is provided at the center of said first cover, said third port is provided at said first cover apart from said first port at a distance, and said second port is provided to said housing.