Smc Corporation

Bunya Hayashi

Makoto Ishikawa

Masaru Narita

Takumi Matsumoto

Shinji Miyazoe

Shinichi Yoshimura

Yoshio Asou

Hideharu Sato

Fumio Morikawa

Katsuhisa Endo

Hideyuki Takada

Yukihiro Matarai

Keisuke Shimauchi

Jiro Karasaki

Kenichi Matsumura

Ryushirou Kaneko

A detent mechanism that increases a holding force for a valve member having two switch positions includes a ring shaped housing groove and an annular elevated portion. A ring shaped detent member made of a material having rubber elasticity is housed in the housing groove. The housing groove includes right and left groove side walls which extend in parallel to each other, and a groove bottom wall. The detent member includes right and left side walls which face the groove side walls of the housing groove and a protruding portion which extends from the housing groove. A locking section which elastically locks the protruding portion of the detent member in the two switch positions is formed at both axial ends of the elevated portion.

Double solenoid valve with detent mechanism

Electromagnetic valve

To obtain a directional control valve superior in workability and maintenanceability by mounting a pilot valve, a printed circuit board and the like on a top surface of a main valve section efficiently so that easy disassembly and assembly are achieved. A valve adapter is mounted on a top surface of a housing of a main valve section with first screws, pilot valves are mounted on the valve adapter with second screws, a printed circuit board is disposed above the pilot valves, and is electrically connected thereto, a protective cover for covering the valve adapter, the pilot valves, and the printed circuit board is mounted airtightly to the top surface of the housing with third screws, a pilot supply flow channel is formed between the valve adapter and the housing, and relay holes for bringing the pilot valves into communication with pilot flow channel ports are provided on the valve adapter.

Electromagnetic pilot type directional control valve

A pilot-type two-port valve is disclosed having a water hammer preventing mechanism, operative to prevent a water hammer during valve-closing operation, which includes a valve member operative to open or close a valve and a piston driven by pilot fluid for operating the valve member for opening and closing movements. The water hammer preventing mechanism comprises a piston drive chamber, from which fluid is discharged during valve-closing operation, which has an orifice for restricting the flow rate of discharge fluid whereby when the piston moves to a position to allow the valve member to be close to a valve seat, a portion of an discharge flow passage of the piston drive chamber is blocked to restrict the flow rate of the discharge fluid to the flow rate of fluid flowing through the orifice.

Pilot-type two-port valve

A two-port valve includes a valve part configured to open and close a valve seat in a liquid flow path connecting a first port and a second port by a valve member and a pilot-type valve driving mechanism to open and close the valve member through a rod. The rod passes through an insertion hole of a plate facing on the liquid flow path in a sealed state. The valve member is provided to the tip part of the rod and also a cap which abuts against the periphery of the insertion hole of the plate when the valve member opens the valve seat and prevents intrusion of foreign material in the liquid into the insertion hole is provided to the rod.

In a switching valve containing a valve member for opening and closing a valve seat and a piston for driving the valve member by the action of a pilot fluid pressure inside a valve housing, a magnet for positional detection is attached to the piston, two sensor attachment grooves extending in the direction of the axial line L of the switching valve and having different groove lengths in accordance with the operational position are formed in parallel on the side face of the valve housing, and magnetic sensors are attached at locations on the side of the innermost end wall in the attachment grooves.

Switching valve with position detecting mechanism

Fluid control valve

A fluid pressure apparatus is formed of a fluid pressure device including a plurality of ports opening in rows on its one end face and a pipe joint assembly in which a plurality of quick-type pipe joints are retained by a joint holder in the same arrangement as the respective ports of the fluid pressure device, in rows. Pipes from respective actuators are connected to the respective pipe joints in advance. After the actuators and the fluid pressure device are installed, the respective pipe joints of the pipe joint assembly are inserted into the corresponding ports of the fluid pressure device to thereby connect the pipes to the respective ports of the fluid pressure device by one operation.

One-operation piping-installation fluid pressure apparatus

A mounting base portion having a plurality of solenoid valve mounting areas is formed on an upper face of a manifold base. A board having an opening portion is mounted onto the manifold base with the mounting base portion fitted in the opening portion and projecting upward from the board. Solenoid valves are mounted to the respective mounting areas. Solenoid portions of the respective solenoid valves extend over the board from the mounting base portion to cover an upper face of the board.

Board-mounted manifold valve

To provide a valve device in which a width of a valve body portion is minimized while suppressing reductions in responsiveness and a flow rate and in which a solenoid portion can produce a necessary output with a small width by using an open/close valve with a short stroke. A solenoid valve device for opening and closing an output flow path for pressurized fluid includes the solenoid portion, the valve body portionin which valve seats are formed to be elongated in the direction of arrangement of the plurality of solenoids, and a movable valve made of a paramagnetic material to open and close the valve seats. The solenoid portion includes a plurality of solenoids having attracting faces which are at one ends of fixed cores and are arranged to be adjacent to each other on the same plane and a common magnetic frame covering the solenoids. Wiring is installed for the solenoid portion so that polarities of magnetic fluxes generated in the fixed cores of the adjacent solenoids during energization are opposite each other or are in the same direction.

Valve device having a plurality of solenoids

A plurality of pipe joints is mounted to a lower face of a base portion of a manifold base. A plurality of solenoid valves are respectively mounted to two valve mounting faces of a valve mounting portion provided onto the base portion. Respective ports of the solenoid valves and the respective pipe joints communicate with each other through flow paths in the manifold base. A substrate assembly for feeding the respective solenoid valves is supported on a substrate mounting portion provided onto the valve mounting portion.

Manifold valve

A plurality of solenoid valves are mounted onto an upper face of a manifold with solenoid operating portions of the solenoid valves projecting on a side of a first side face of the manifold. Onto the first side face, a board including an electric circuit for feeding the solenoid valves is detachably mounted in a vertical orientation under the solenoid operating portions. On the board, feeding connectors and indicating lights are respectively provided in positions corresponding to the respective solenoid valves.

An interlock valve is formed by incorporating a main valve portion having a valve member into a first casing, incorporating a driving-side operating portion having a driving piston for driving the valve member into a first end plate, incorporating a return-side operating portion having a return spring for returning the valve member into a second end plate, incorporating an OR circuit portion formed to output control fluid to the driving piston by a plurality of shuttle valves, a plurality of OR input ports, and one OR output port into a second casing, and sandwiching the first casing and the second casing between the first end plate and the second end plate positioned to face each other to couple the end plates and the casings.

Growing community of inventors

Tsukuba-gun, Japan

Bunya Hayashi