摘要:
A concrete filled steel tube column. The concrete filled steel tube column includes a steel tube having an inner face; a concrete core disposed within the steel tube; and a separating layer interposed between the inner face of the steel tube and the concrete core for separating the concrete core from the inner face of the steel tube so that the steel tube may not be bonded to the concrete core. After the separating layer is formed on the inner face of the steel tube, the concrete is charged into the steel tube to form a concrete core.
摘要:
A variable displacement vane compressor for an air conditioning system used in an automobile has a cylinder assembly having a bore in which a rotor (7) is received to form at least one crescent chamber (R1, R2) between the rotor (7) and the bore. The cooling capacity is adjusted in accordance with a cooling load of the air conditioning system by displacement of an annular plate member (21) for controlling the amount of refrigerant introduced into a crescent chamber (R1, R2). The annular plate member (7) is driven by a driving units (25, 25a, 26, 27, 28, S1, S2) in which a dynamic pressure balance between a first compartment (S1) to which a refrigerant gas under a discharging pressure is introduced, and of a second compartment (S2) to which an oil under a discharging pressure is introduced. A sealing means (35a, 36) for preventing the leakage of the refrigerant gas from the high pressure region including the first compartment (S1) to the low pressure region is provided between the annular plate member (21) and a front end wall member (4) and an pressurized oil is supplied to the sealing means (35a, 36) to enhance the sealing effect of the sealing means (35a, 36).
摘要:
A variable displacement vane compressor including a rotor rotatably supported between a pair of side plates secured to a cylinder, vanes movably supported in the rotor to define variable compression chambers in the cylinder, a reciprocally rotatable displacement control plate located between the rotor and one of the side plates for controlling the largest displacement of the compression chambers when closed, a spool chamber provided in one side plate and opposed to the displacement control plate, a spool which reciprocates in the spool chamber to define a first pressure chamber in which a refrigerant having a discharge pressure is introduced and a second pressure chamber in which an oil having the discharge pressure is introduced through a control valve unit in response to the suction pressure, the spool and the displacement control plate being interconnected by a connecting member and moving together, a seal ring between the displacement control plate and the one side plate, for isolating a high pressure area from a low pressure area, and feed passages for introducing the oil having the discharge pressure to the sealing ring. The one side plate has an elongated hole which permits movement of the connecting member extending therethrough, and the seal ring has a diameter smaller than that of an imaginary circle centered on the rotation axis of the rotor and circumscribing the elongated hole. The seal ring is eccentric to the rotation axis and includes the elongated hole in the seal ring.
摘要:
A water-containing plastic composition which comprises (a) 10-90 wt. % of water-containing powdery gel obtained by subjecting at least one water-soluble polymer such as polyvinyl alcohol, polyacrylamide, polyvinylpyrrolidone or poly(hydroxyalkyl acrylate), while it is in the state of an aqueous solution, to crosslinking reaction and then pulverizing the crosslinked product and (b) 90-10 wt. % of at least one plastic substance selected from thermoplastic and thermohardenable plastics. The water-containing plastic composition is suitable as a material for manufacturing poorly combustible molding materials.
摘要:
A variable displacement pump includes: a first control oil chamber which moves a cam ring toward a direction against a biasing force of a biasing member when a discharge pressure is introduced thereinto; a second control oil chamber which acts a hydraulic pressure upon the cam ring by cooperating with the biasing force of the biasing member when hydraulic oil is introduced thereinto; a switching mechanism which switches between one state in which hydraulic oil whose pressure is decreased than a discharge pressure is introduced to the second control oil chamber from the discharge section and another state in which hydraulic oil is discharged from the second control oil chamber; and a control mechanism operated before an eccentricity of the cam ring becomes a minimum and which discharges a greater amount of hydraulic oil within the second control oil chamber as the discharge pressure becomes larger.
摘要:
In a hydraulic pressure circuit including an introduction section through which oil is introduced, a main passage section installed at a downstream side of the introduction section to be communicated with a supply section through which oil is supplied to each of slide sections of an internal combustion engine, a branch passage branched from the main passage section to supply oil to a hydraulic pressure actuator, and a control valve having a valve body which is moved in accordance with a pressure of an upstream side thereof, and a variable capacitance pump configured to drain oil to the introduction section, the variable capacitance pump is configured to vary a drained flow quantity in accordance with the drained pressure of oil and a pressure under which the oil drained flow quantity is started to be varied is higher than a pressure under which the valve body is started to move.
摘要:
To form a through hole at one portion of a side wall, of an expanded portion made by plastically deforming one part of a metal tube radially outward, in a portion where the plate thickness gradually changes, a slide tool is withdrawn from inside a punch hole while applying hydraulic pressure to the inside of the side wall. At the instant of commencing withdrawal of the slide tool, the degree of progress in the shearing for the portions of the side wall matching with the two side edges of the punch hole is made different. Then, the timing for moving from shearing to rupture is made to coincide, so that of the side wall, the portions matching with the punch hole, are made reliably into a blank, and are extracted from the side wall.
摘要:
An electromagnetic field coupling structure that is used in a microwave band frequency band, includes: a laminated body in which an inner dielectric layer 23 is sandwiched and laminated between a plurality of inner conductor layers 12 and 15 which become a plurality of ground layers; a pair of outer dielectric layers 21 and 25 facing each other with the laminated body interposed therebetween; and a pair of outer conductor layers 11 and 16 facing each other with the pair of outer dielectric layers 21 and 25 interposed therebetween. The laminated body is provided with a hole S which penetrates the inner dielectric layer 23 and the inner conductor layers 12 and 15 which become the plurality of ground layers, and the inner conductor layers 12 and 15 which become the plurality of ground layers are electrically connected via a tubular metal film 3 formed on an inner wall of the hole S, whereby the pair of outer conductor layers 11 and 16 are electromagnetically coupled.
摘要:
Provided are a highly efficient, low waveform distortion power supply device and a power amplifying apparatus with high efficiency and high linearity using the device as a power supply.A power supply device of the present invention comprises a linear amplifier unit 400 which linearly amplifies an input signal and outputs it as an electric current Ic, and a switching amplification control unit 500, which outputs an electric current Im using a plurality of switching amplifying units 601, 602, . . . 60n for outputting respective predetermined voltages on the basis of the magnitude of the electric current Ic outputted from said linear amplifier unit 400; and it generates an output voltage Vout according to the waveform of the input signal, and outputs an electric current Tout which is a combination of the electric currents Ic and Im.
摘要:
An oil pump includes a shaft bearing bore, a drive shaft supported by the shaft bearing bore, an annular space between an inner peripheral surface of the shaft bearing bore and an outer peripheral surface of the drive shaft, a communication passage portion formed on the side of a pumping chamber inside the shaft bearing bore, and a communication groove formed opposite to the communication passage portion inside the shaft bearing bore. The communication passage portion is communicated between a discharge port and the annular space, and the communication groove is communicated with the annular space. Oil is stored in the annular space from the discharge port via the communication passage portion, and the oil flows into sliding clearance spaces of first and second journal portions via the annular space and the communication passage portion and the communication groove.