摘要:
In the manifold valve of the invention, a sensor chamber is formed in an upper face of a casing of a solenoid valve, pressure sensors are disposed in the sensor chamber, a wiring block including a wiring path in itself is connected to a portion of the casing, and signal conductors extending from the pressure sensors are introduced into a wiring path in the wiring block and are connected to a main wiring substrate through an intermediate block.
摘要:
In a high frequency power amplifier circuit that supplies a bias to an amplifying FET by a current mirror method, scattering of a threshold voltage Vth due to the scattering of the channel impurity concentration of the FET, and a shift of a bias point caused by the scattering of the threshold voltage Vth and a channel length modulation coefficient λ due to a short channel effect are corrected automatically. The scattering of a high frequency power amplifying characteristic can be reduced as a result.
摘要:
A pilot-type solenoid valve capable of driving a valve member by increasing a pilot fluid pressure from a pilot valve and reliably switching valve member. The pilot-type solenoid valve includes a main valve portion having a valve member capable of sliding in a valve hole to which ports P, A, B, EA and EB in a valve body are opened, a pilot driving mechanism for applying a pilot fluid pressure to a pushing member which pushes one end of the valve member, and a returning mechanism for applying a returning force to the valve member. The pushing member includes a first piston for applying the pilot fluid pressure, and a second piston which is pushed by the first piston and which pushes the valve member. A shaft of the first piston passes through a partition wall in a sealing manner and abuts against the second piston. The shaft is provided therein with a guide hole for guiding the pilot fluid pressure to a pressure chamber of the second piston.
摘要:
A cover for preventing misoperation is easily and certainly attached/detached to/from an operating piece for manual operation provided for a fluid pressure control device. It is attached so as not to be lost even when the cover is detached for manual operation. For this purpose, retaining grooves 7a and 7b are formed on the outer face of a plunger-type operating piece 3 provided on the top face of the body 4 so as to be projected. A cylindrical cover 5 is provided with a hook 10 which is resiliently retained by the retaining groove 7a or 7b and a string-shaped connecting member 12 which is connected to the operating piece 3, thereby preventing the cover 5 from being lost. The height of the cover 5 is set to be equal to or higher than that of the operating piece 3 in a non-operating position.
摘要:
In a fluid pressure control device such as a solenoid-controlled valve having an operating piece for manual operation which is a selector-type operating piece, a cover for preventing misoperation is attached to the selector-type operating piece. Consequently, a cover 6 for preventing misoperation comprised of a base part 10 having an attaching part 14 to be fixed to the casing and a lid part 11 which is integrally connected with the base part 10 via a bending part 12 which can be bent and stretched is attached to a selector-type operating piece 5 having a handle 5a for manual operation at the top. By bending the bending part 12, the lid part 11 can be closed between a closed position covering the handle 5a and opened an open position to release the handle 5a.
摘要:
A sealing article 17 is provided in the opening edge of a depression 2c provided in a manifold 2 to connect a supply connector 16 and a receiving connector 44 in an air-tight manner. A solenoid section 33, in which a solenoid 31 in each of pilot valve 21a and 21b and a receiving connector 44 that supplies power to connector 31 are sealed into a synthetic resin 45, is provided in a transfer valve 3A. Solenoid section 33 has a lamp circuit board 49 mounted on its outer surface to receive power from receiving connector 44, and includes power supply indicator lamps 48; and a cover 50, covering the whole of lamp circuit board 49, mounted to form an air-tight seal on its outer surface via a gasket 52.
摘要:
Two coil assemblies 2a and 2b each having a coil 6 wound around a bobbin 5, a fixed and a movable iron cores 8 and 11 provided in a center hole 7 of the bobbin 5, and a pair of pin-like coil terminals 9a and 9b protruding from the end surface from the bobbin 5 are integrated into a single magnetic frame sized so as to accommodate two coil assemblies simultaneously, or a single coil assembly 2a and a dummy member 3 having essentially the same external shape and size as the coil assembly are integrated into the magnetic frame. These components are sealed and integrated into a synthetic resin 22.
摘要:
A composite plating apparatus includes a cylindrical electrode which is positioned in a hollow section of a workpiece with a surrounding gap left therebetween. A plurality of through-holes are formed across the thickness of an outer wall of the cylindrical electrode. Composite plating liquid is jetted out through the through-holes and impinge on the inner surface of the hollow section to thereby produce turbulence. The turbulent liquid provides a uniform distribution of ceramic particles in the liquid. As a result, the ceramic particles can be co-deposited uniformly in a metallic matrix, and hence a uniform abrasion-resistant characteristic is obtained all over a resultant composite plating film.
摘要:
A valve installation surface of a manifold base includes an installation surface on which a main valve and two pilot valves and are installed, separate from each other. The manifold base includes a supply channel, ejection channels and an output port that opens to a front end surface, all opening to the main valve installation surface. One end of pilot supply passages and communicates with pilot supply and ejection channels and, respectively. The other ends of pilot ejection passages and are open to the pilot valve installation surface. One end of pilot output passages and opens to the pilot valve installation surface, while the other ends are open to the main valve installation surface. A manifold base may also include a waterproof cover that covers the pilot valves and the energization system, extending from the feeding line to the pilot valve. The main valve may be a single or double solenoid.
摘要:
A packing mounting groove formed in a spool has a wider portion of a large groove width and a narrower portion of a small groove width, and a packing that is mounted in the packing mounting groove has a first portion that fits in the wider portion and a second portion that fits in the narrower portion. A plurality of fixing protrusions formed concentrically on both sides of the second portion are pressure-contacted with a groove wall of the narrower portion to fixedly mount the packing in the mounting groove.