摘要:
The invention provides a method of processing an inner surface of a bearing having a cylindrical shape which bearing includes a resin layer composed mainly of a synthetic resin as the inner surface, the method improving roughness of the inner surface and dimensional accuracy of an inner diameter of the bearing without cutting the inner surface. According to the method, the bearing is press-fitted into a jig and then the jig is mounted on a chuck. Next, a mandrel having a cylindrical bar shape is inserted into an inner diameter portion of the bearing and then the mandrel is heated by a heater up to 250° C., for example. The mandrel is expanded due to thermal expansion by the heating so that the inner surface, i.e., a surface of the resin layer is pressed by a press face of a peripheral surface of the mandrel.
摘要:
There is provided a double-sided sliding thrust bearing of a plate shape adapted to be in sliding contact with a counterpart on each of both faces of the thrust bearing, comprising a bearing structure provided with a plate-shaped base member having an anchor effect on each of both faces thereof, and a sliding layer having a thickness not less than 30 μm on each of the faces of said base member which sliding layer is made of a thermosetting resin-containing material. By making the thickness of the sliding layer 10 not less than 30 μm, it becomes possible for the thrust bearing 1 to slide shoes for a longer time even when being used in a dry state and the sliding layer 10 comes to be hardly peeled off from the base member 2 because of the anchor effect of the base member 2. Further, the mechanical strength and thermal conductivity of the thrust bearing 1 can be improved by the base member 2 located between the sliding layers 10.
摘要:
An object of the present invention is to provide a sliding member which can slide for a longer period of time even in a dry state. In the present invention, sliding layers 3 are provided on the surfaces of a base material 2, and the sliding layer 3 contains polybenzimidazole (PBI) and 1 to 70 vol % of a solid lubricant. Since PBI, which is a thermoplastic resin, has higher heat resistance and also has higher material strength than PAI, PI, and EP, which are the conventionally used thermosetting resins, the wear resistance and the anti-seizure property can be improved and a decrease in material strength caused by high-temperature atmosphere, heat generation at the time of sliding, etc. can be restrained. Furthermore, the initial conformability can be improved because of high elongation percentage. Also, since the sliding layer contains the solid lubricant, the coefficient of friction can be decreased, and hence the anti-seizure property can be enhanced.
摘要:
To satisfy the demand for a reduction in height, provided is a technique for reducing a gap between a motherboard and a daughterboard in the state where the daughterboard is connected to the motherboard. A card edge connector is used to be mounted on a connector mounting surface of a mainboard to connect a memory module to the mainboard. The card edge connector includes a latch portion for pressing the memory module to be displaced in a direction away from the connector mounting surface, toward the connector mounting surface. The latch portion is configured to be elastically displaceable in the direction away from the connector mounting surface.
摘要:
A connector (1, 11) comprises a connector housing (2, 12), a plurality of signaling contacts (3, 13) arranged in a plurality of columns and a plurality of rows, a plurality of first ground plates (4, 16) arranged between every two adjacent ones of and at the outside of opposite outermost ones of the columns, and a plurality of second ground plates (5, 17) arranged between every two adjacent ones of and at the outside of opposite outermost ones of the rows. The first and the second ground plates (4, 5; 6, 17) are connected to each other to form a grid structure to enclose each individual contact in each grid cell. In case of differential signal transmission, each pair of two contacts is enclosed in each grid cell.
摘要:
A connector having a plate-like insulator (11) formed with spaces each extending between a first surface (11a) and a second surface (11b) confronting each other in a first direction (A1), and contacts (12) each unitarily formed and mounted in the corresponding space. The insulator has a wall portion (13) that divides each of the spaces into a first space (14) and a second space (15) in a second direction (A2). Each contact has a retained portion (16) that is retained in the first space utilizing the wall portion, and a spring portion (17) extending from the retained portion, passing on the side of the first surface to bypass the wall portion and entering the second space. The spring portion has a protruding portion (27) approaching to confront the wall portion, and a contact portion (28) protruding from the second surface to the exterior of the insulator.
摘要:
It is an object of the invention provide a content addressable memory, which operates at high speed and consumes low electrical power. The first CAM cell array, which is supplied with higher m bits of reference data, is composed of m CAM cells connected in series for each word, compares previously stored data of m bits with higher m bits of reference data in bit serial for each word. The first sense amplifier detects the result of comparison. The second CAM cell array, which is supplied with lower n-m bits of the reference data, is composed of n-m CAM cells connected in parallel for each word, made to be in operating condition only in case that the output of the first sense amplifier shows coincidence, and compares previously stored data of n-m bits with lower n-m bits of the reference data in bit parallel for each word. The second sense amplifier detects the result of comparison.
摘要:
The invention is related to a bearing material having multiple layers therein and a method for manufacturing the same. The invention features that a bearing layer consisting mainly of an integrated resin powder is formed on a porous layer covering a back metal, such as a steel plate of like, that the integrated resin powder consists of P T F E resin precipitate and F E P resin precipitate and/or P F A resin precipitate and that each particle of the integrated resin powder is covered with Pb-Sn alloy powders.Accordingly, the integrated resin powder independently provides a predetermined lubricating property. In addition, since these resin precipitates are in unity, it is possible to maintain excellent cavitation resistance property and load resistance property, even under severe boundary conditions.Furthermore, since each of the integrated resin powder is covered with the Pb-Sn alloy powder, an uniform and deep penetration of the alloy powder into pores of the porous layer can be easily obtained.
摘要:
A connector assembly comprises a first connector and a second connector configured to be mated with each other. The first connector includes a plurality of first contacts, a first housing and a first shell. The first contacts are arranged and retained in a pitch direction by the first housing The first housing is covered at least in part with the first shell The first shell includes a spring portion and a contact portion. The spring portion extends in the pitch direction. The spring portion is long in the pitch direction. The contact portion is supported by the spring portion so as to be movable in a direction perpendicular to the pitch direction. The second connector includes a second shell. The second shell is brought into contact with at least the contact portion of the first shell so that the first shell and the second shell are connected to each other when the second connector is mated with the first connector.
摘要:
In a connector apparatus including a first connector and a second connector to be fitted to the first connector in a predetermined direction, the first connector includes a conductive receptacle contact having first and second receptacle-side contact points spaced from each other. The first receptacle-side contact point and the second receptacle-side contact point are positioned in this order towards the predetermined direction. The second connector includes a conductive plug contact to be inserted between the first and the second receptacle-side contact points. The plug contact has an inserting end, first and second plug-side contact points to be contacted with the first and the second receptacle-side contact points, respectively, and a protruding portion formed between the inserting end and the first plug-side contact point.