Abstract: An opening/closing door 10 for openably closing the opening of a housing includes: a door body; a locking member for holding the door body in a closed state by engagement with a part of the housing; and a lever 11 that is linked with the locking member and has one end rotatably supported by the door body, the door body including: a storage part 24 for storing the lever 11 along the surface of the door body when the locking member is placed in a locking state completely; and a protrusion 12 that protrudes outside the storage part 24 and comes into contact with the lever 11 when the locking member 13 is placed in the locking state incompletely.

Abstract: A method for manufacturing a magnetic memory chip device is provided with a step of writing information on a plurality of magnetic memory chips formed on a silicon wafer; a step of adhering a high permeability plate, which is composed of a material having permeability higher than that of silicon and has a thickness of 50 ?m or more, on the rear surface of a silicon wafer after writing the information; and a step of dicing the silicon wafer into magnetic memory chips after adhering the high permeability plate.

Abstract: A variable displacement compressor in which variable control of displacement is effected through adjustment of a crank chamber pressure, includes: a suction port; a suction chamber; a suction passage establishing communication between the suction port and the suction chamber; and an opening control valve arranged in the suction passage and adapted to adjust the opening of the suction passage based on a pressure difference between a suction pressure in the suction port and the crank chamber pressure.

Abstract: It is suppressed that a whisker occurs on a lead for external connection. A lead for external connection is formed of the alloy (42Alloy) of Fe and Ni, and a plating film which includes alloy of Sn and Cu is formed on the surface. Next, using a heat-treat furnace, the heat treatment at the temperature beyond melting-point T0 of the plating film is performed, and the plating film is melted. At this time, the temperature beyond T0 is held for 20 seconds or more. The grain boundary of the plating film can be vanished by the above-mentioned heat treatment. Hereby, the internal stress of the plating film can be eased, and the generation of the whisker can be suppressed.

Abstract: In the present imaging device, a cassette cover 2 is extended not only to a grip surface of a camcorder 1 but also to a side surface on a viewfinder side. Thus, a variety of switches to be mounted on the surface on the viewfinder side can be mounted on the cassette cover 2, thereby a zoom switch 4 and an S/S button 8 can be connected to a circuit board 31 with a single flexible board 32 and a single connector 33. Therefore, the wirings can be simplified.

Abstract: A supply passage is formed in a rotary shaft along the axis thereof. An expansion passage is formed in the rotary shaft in such a way as to be led to the supply passage. A pair of fluid passages are formed in the rotary shaft in such a way as to communicate with the expansion passage. The fluid passages extend in a direction orthogonal to the axis and the outlet ports of the fluid passages are open to the outer surface of the rotary shaft. The fluid passages extend from the expansion passage to a control pressure chamber, penetrating through the rotary shaft.

Abstract: It is suppressed that a whisker occurs on a lead for external connection. A lead for external connection is formed of the alloy (42Alloy) of Fe and Ni, and a plating film which includes alloy of Sn and Cu is formed on the surface. Next, using a heat-treat furnace, the heat treatment at the temperature beyond melting-point T0 of the plating film is performed, and the plating film is melted. At this time, the temperature beyond T0 is held for 20 seconds or more. The grain boundary of the plating film can be vanished by the above-mentioned heat treatment. Hereby, the internal stress of the plating film can be eased, and the generation of the whisker can be suppressed.

Abstract: A swash plate type variable displacement compressor includes a cylinder block defining a cylinder bore. A housing is fixed to the cylinder block and defines a crank chamber. A drive shaft is rotatably supported by the housing and the cylinder block. A swash plate is supported by the drive shaft in the crank chamber and is inclinable with respect to the axis of the drive shaft. A piston is accommodated in the cylinder bore so as to define a compression chamber in the cylinder bore and is coupled to the swash plate. A control mechanism includes a bleed passage for controlling the pressure in the crank chamber. The compressor is formed such that lubricating oil in the crank chamber is discharged into at least one of the suction chamber, the discharge chamber and the compression chamber while the inclination angle of the swash plate is substantially a maximum inclination angle.

Abstract: A variable displacement compressor in which variable control of displacement is effected through adjustment of a crank chamber pressure, includes: a suction port; a suction chamber; a suction passage establishing communication between the suction port and the suction chamber; and an opening control valve arranged in the suction passage and adapted to adjust the opening of the suction passage based on a pressure difference between a suction pressure in the suction port and the crank chamber pressure.

Abstract: A piston compressor includes a rotary valve having a suction guide hole. A plurality of introducing passages are formed in a cylinder block to connect compression chambers to the rotary valve. The inner circumferential surface of each cylinder bore has a suction auxiliary recess, which is connected to the outlet of the corresponding introducing passage in the circumferential direction of the cylinder bore at the end of the cylinder bore facing a valve assembly. Therefore, the compressor reduces suction resistance of gas at the beginning of the suction stroke without enlarging introducing passages formed in the cylinder block.

Abstract: A compressor includes a compression chamber, a discharge chamber, a discharge port forming member and a discharge valve The compression chamber is formed in a cylinder block and in the compression chamber a refrigerant is compressed. The discharge chamber is formed in a cylinder housing which is fixed to the cylinder block. The refrigerant in the compression chamber is flowed into the discharge chamber. The discharge port interconnects the compression chamber and the discharge chamber. The discharge valve opens and closes the discharge port, and has a valve member and an arm member. The valve member faces to the discharge port for opening and closing the discharge port. The arm member urges the valve member toward the discharge port. The arm member and the valve member are integrally joined with each other.

Abstract: A swash plate type variable displacement compressor includes a cylinder block defining a cylinder bore. A housing is fixed to the cylinder block and defines a crank chamber. A drive shaft is rotatably supported by the housing and the cylinder block. A swash plate is supported by the drive shaft in the crank chamber and is inclinable with respect to the axis of the drive shaft. A piston is accommodated in the cylinder bore so as to define a compression chamber in the cylinder bore and is coupled to the swash plate. A control mechanism includes a bleed passage for controlling the pressure in the crank chamber. The compressor is formed such that lubricating oil in the crank chamber is discharged into at least one of the suction chamber, the discharge chamber and the compression chamber while the inclination angle of the swash plate is substantially a maximum inclination angle.

Abstract: In a piston type compressor, a piston is respectively accommodated in a plurality of cylinder bores arranged around a rotary shaft. A rotary valve has a suction guiding passage for introducing gas from a suction pressure region into a compression chamber when in communication therebetween. A suction timing control passage is formed in the rotary valve and is constantly in communication with the suction pressure region at first end, the suction timing control passage precedes the suction guiding passage communicating with the compression chamber at second end. A suction timing control valve is arranged in the control passage, having a valve body which opens and closes the control passage in response to difference between force resulting from pressure on a side of the suction pressure region to open the valve body and force resulting from pressure on a side of the compression chamber to close the valve body.

Abstract: Lubricating films are formed on end surfaces of a swash plate, respectively. The lubricating films make slide contact with shoes, respectively. The lubricating films are composed of a copper based material containing no lead, and solid lubricant other than lead is contained the copper based material. A good slide contact characteristic may be obtained while using no lead.

Abstract: A gasket is provided between a cylinder block and a valve plate. By providing a through hole at a position near the center of the gasket, bending moment acting on the cylinder block is reduced, and hence deformation of the cylinder block is restrained. As a result, reciprocating motion of a piston and rotational motion of a rotary valve are performed smoothly.

Abstract: A supply passage is formed in a rotary shaft along the axis thereof. An expansion passage is formed in the rotary shaft in such a way as to be led to the supply passage. A pair of fluid passages are formed in the rotary shaft in such a way as to communicate with the expansion passage. The fluid passages extend in a direction orthogonal to the axis and the outlet ports of the fluid passages are open to the outer surface of the rotary shaft. The fluid passages extend from the expansion passage to a control pressure chamber, penetrating through the rotary shaft.

Abstract: A compressor includes pistons, each of which is coupled to a swash plate through a pair of shoes. The swash plate rotates integrally with a drive shaft. The shoes convert the rotation of the swash plate to the reciprocation of the piston. A lubricating coating made of copper-based material is formed on parts of the swash plate along which the shoes slide. The copper-based material includes silicon. The shoes smoothly slide on the swash plate, which is coated by the lubricating coating that uses minimum amount of lead.

Abstract: A sliding member comprising at least one sliding layer including a solid lubricant and at least one thermosetting resin with which particles of the solid lubricant are held together, the solid lubricant containing 10-40 vol. % of polytetrafluoroethylene. A sliding device comprising: at least one first sliding member each including at least one sliding layer which includes a solid lubricant and at least one thermosetting resin with which particles of the solid lubricant are held together, the solid lubricant containing 10-40 vol. % of polytetrafluoroethylene; and at least one second sliding member plated with a nickel-based composition; and wherein the at least one first sliding member and the at least one second sliding member slide relative to each other.

Abstract: A method of producing a shoe for a swash plate type compressor, the shoe being disposed between a swash plate and a piston of the swash plate type compressor and formed of an aluminum alloy, the method comprising: a main forging step of forging a blank for producing the shoe into a roughly-shaped precursor shoe; a thermal refining step of thermally refining the roughly-shaped precursor shoe; and a size-adjustment forging step of forging the roughly-shaped precursor shoe which has been thermally refined, into a size-adjusted shoe.

Abstract: A swash plate type variable displacement compressor has a housing, a drive shaft, a swash plate and a piston. The housing includes a cylinder block, a front housing, and a rear housing. The drive shaft is rotatably supported by the housing. The swash plate is connected to the drive shaft, and is integrally rotatable with the drive shaft and tiltable relative to the drive shaft. The piston engages with the swash plate through a pair of shoes. Rotation of the drive shaft is converted to reciprocation of the piston through the swash plate and the shoes, and the displacement of the compressor is adjusted by varying the inclination angle of the swash plate with respect to the axis of the drive shaft. The swash plate includes a base member made of copper series and a sliding layer coating a sliding surface of the base member with respect to the shoes.