Abstract: A fuel cell cogeneration system includes a fuel cell module, a heat exchanger, a hot water tank, a circulating water channel, and an oxygen-containing gas supply channel. A circulating water heater for heating water is provided on the circulating water channel. Part of the oxygen-containing gas supply channel is provided in the circulating water heater to thereby allow air flowing through the oxygen-containing gas supply channel to be heated by receiving heat from the circulating water heater.

Abstract: A fuel cell cogeneration system includes a fuel cell module, a heat exchanger, a hot water tank, a circulating water channel, and an oxygen-containing gas supply channel. A circulating water heater for heating water is provided on the circulating water channel. Part of the oxygen-containing gas supply channel is provided in the circulating water heater to thereby allow air flowing through the oxygen-containing gas supply channel to be heated by receiving heat from the circulating water heater.

Abstract: Provided is a junction box 10 with an electric circuit formed by laminating a plurality of resinous plates 51, wherein a plurality of pole structures 61 is uprightly formed on a bottom (lower casing 60) of the junction box so as to be located at a position not overlapping the conductive patterns 52 of the laminated plates and to face a direction of penetrating the plates, in which a plurality of insertion holes 53 is formed in the resinous plates 51 so as to allow the pole structures 61 to be inserted therethrough, in which the plurality of pole structures 61 is formed to have different heights, and in which insertion holes 53 are formed in each of the resinous plates 51 so as to allow the pole structures 61 to be inserted therethrough and to match with the heights of the pole structures 61 having different heights.

Abstract: A wiring structure includes a board assembly and pin terminals. In each of pin terminal insertion holes formed in the board assembly, a terminal connection portion electrically connected to a metal foil wire and fitted onto the pin terminal so as to hold the pin terminal is provided in a through-hole of at least one of a plurality of circuit boards forming the board assembly, which forms a part of the pin terminal insertion hole, whereas an insulating sleeve blocking contact between the pin terminal and each of the remaining circuit boards is fitted into through-holes of the remaining circuit boards, which form the remaining part of the pin terminal insertion hole.

Abstract: Provided is a connection mechanism which connects a switch portion 20 of a generator 1 to an assembling terminal 11 of a junction box 10 having plural female terminals 12 connected to a generator circuit 13 via a relay connector 30, wherein the relay connector 30 forms a defining wall 31 inside a cylindrical body so that a fitting portion 32 is provided at one side of the defining wall 31 so as to be fitted to the switch portion 20, and plural relay terminals are attached to the other side so as to be connected to the plural female terminals 12, and wherein holes 35 are provided in the defining wall so as to respectively face the front ends of the relay terminals 33. Accordingly, the switch portion 20 and the assembling terminal 11 are integrally and directly connected to each other via the relay connector 30.

Abstract: A wiring structure includes a board assembly and pin terminals. In each of pin terminal insertion holes formed in the board assembly, a terminal connection portion electrically connected to a metal foil wire and fitted onto the pin terminal so as to hold the pin terminal is provided in a through-hole of at least one of a plurality of circuit boards forming the board assembly, which forms a part of the pin terminal insertion hole, whereas an insulating sleeve blocking contact between the pin terminal and each of the remaining circuit boards is fitted into through-holes of the remaining circuit boards, which form the remaining part of the pin terminal insertion hole.

Abstract: Provided is a junction box 10 with an electric circuit formed by laminating a plurality of resinous plates 51, wherein a plurality of pole structures 61 is uprightly formed on a bottom (lower casing 60) of the junction box so as to be located at a position not overlapping the conductive patterns 52 of the laminated plates and to face a direction of penetrating the plates, in which a plurality of insertion holes 53 is formed in the resinous plates 51 so as to allow the pole structures 61 to be inserted therethrough, in which the plurality of pole structures 61 is formed to have different heights, and in which insertion holes 53 are formed in each of the resinous plates 51 so as to allow the pole structures 61 to be inserted therethrough and to match with the heights of the pole structures 61 having different heights.

Abstract: Provided is a connection mechanism which connects a switch portion 20 of a generator 1 to an assembling terminal 11 of a junction box 10 having plural female terminals 12 connected to a generator circuit 13 via a relay connector 30, wherein the relay connector 30 forms a defining wall 31 inside a cylindrical body so that a fitting portion 32 is provided at one side of the defining wall 31 so as to be fitted to the switch portion 20, and plural relay terminals are attached to the other side so as to be connected to the plural female terminals 12, and wherein holes 35 are provided in the defining wall so as to respectively face the front ends of the relay terminals 33. Accordingly, the switch portion 20 and the assembling terminal 11 are integrally and directly connected to each other via the relay connector 30.

Abstract: Highly reliable hydrodynamic bearing device and spindle motor are provided as a result of improving cleanliness by using an iron metal having austenite structure, which is a non-magnetic body, and solving the problem of lowering of abrasion resistance due to low hardness. A shaft is formed using an iron metal having austenite structure, and a surface treated layer dispersed with solid lubricant is formed on at least a part of the surface of a shaft facing a sleeve by spraying fine particles of solid lubricant. Cleanliness is improved since the shaft is formed using an iron metal having austenite structure, which is a non-magnetic body. Further, since the surface treated layer dispersed with solid lubricant is arranged on the bearing surface, the abrasion resistance is enhanced and excellent bearing reliability is obtained.

Abstract: A hydrodynamic bearing device includes a rotary part including a shaft and a rotor hub; a stationary part including a bearing member, which has an inner peripheral surface radially confronting with an outer peripheral surface of the shaft, a bearing bore, and an upper surface axially confronting with a bottom surface of the rotor hub; a radial bearing portion formed between the outer peripheral surface of the shaft and the inner peripheral surface of the bearing member; a thrust bearing portion formed between the bottom surface of the rotor hub and the upper surface of the bearing member; and a communication hole having a first end opened radially outwardly at the thrust bearing portion and a second end opened toward a closed side of the first gap, the communication hole being formed at the bearing member.

Abstract: A set of radial dynamic pressure generating grooves constitute a radial bearing, and an entire width (L) of the radial dynamic pressure generating groove is reduced. A set of thrust dynamic pressure generating grooves constituting a thrust bearing are formed so that an area where a maximal thrust dynamic pressure is generated (diameter) is increased, and a bearing angle stiffness of the thrust bearing is increased. The thrust bearing having the high bearing angle stiffness shares a moment load applied to a shaft to thereby compensate for a bearing angle stiffness of the radial bearing whose bearing stiffness is small because an entire width of the radial bearing is small. Thus, a thin-shaped hydrodynamic bearing capable of withstanding a large moment load is obtained.

Abstract: A magnet (13) for trapping abraded powder is disposed in a connecting passage between an opening of a sleeve and an opening of a hydrodynamic bearing motor, and a shaft (3), a sleeve (4), a thrust flange (7), and a thrust main plate (5) are made of an austenitic stainless. With this configuration, since the austenitic stainless acting as a nonmagnetic substance is used, it is possible to increase a degree of cleaning. Further, abraded powder of the austenitic stainless is transformed into a magnetic substance, and thus a flow of the abraded powder to the outside can be prevented by providing the magnet for trapping abraded powder in the connecting passage between an opening of a bearing and the outside of the motor.

Abstract: A fluid bearing device capable of responding to miniaturization while preventing an operating fluid such as a lubricating oil from leaking out to the outside. The fluid bearing device includes a shaft and a sleeve arranged on an outer periphery with respect to the shaft with a microscopic gap in between, and has an operating fluid filled in between the shaft and the sleeve. The shaft is formed by a sintered body, a radial dynamic pressure generating groove is formed on an outer peripheral surface of the shaft, and the sleeve is formed by a material not allowing the operating fluid to pass through. The shaft is thus covered by the sleeve formed by a material that does not penetrate the operating fluid such as lubricating oil from the outer periphery side, so that the operating fluid does not leak out to the outside even when the shaft is a porous body made of a sintered body.

Abstract: A spindle motor includes a shaft including a core spindle member with a large and a small diameter portions and an encircling annulus member attached to the small diameter portion; a rotor hub attached to the large diameter portion; a bearing member; a radial bearing portion provided with first dynamic pressure creating grooves and formed between the outer peripheral surface of the encircling annulus member and the inner peripheral surface of the bearing member; a thrust bearing portion provided with second dynamic pressure creating grooves and formed between a lower end of the encircling annulus member and the bottom of the bearing member; a first opening formed at a radially inner side of the thrust bearing portion; a second opening formed at a radially outer side of the large diameter portion; and a communication hole continuously formed from the first opening to the second opening.

Abstract: A spindle motor which allows appropriate formation of communicating hole for compensating a pressure difference due to an error in working of dynamic pressure generating grooves and other components, easy formation of dynamic pressure generating grooves and readily prevention of leakage of a lubrication fluid is provided. An outer cylindrical member is attached to a shaft, a radial hydrodynamic bearing and a thrust hydrodynamic bearing are provided between the outer cylindrical member and the sleeve, and communicating holes are formed between the shaft and the outer cylindrical member, and between the hub and the outer cylindrical member. Since the collared outer cylindrical member is attached to the shaft, the communicating holes can be readily formed. Also, since a thrust hydrodynamic bearing is formed between an opening of a communicating hole and a seal, a lubrication fluid is unlikely to leak from the seal portion.

Abstract: A hydrodynamic bearing for a hard disk drive device is disclosed. An oil is filled in a clearance between an inner surface of the hub and an outer surface of the shaft, whereby a hydrodynamic radial bearing is formed between the inner periphery of the hub and the outer periphery of the shaft, and a hydrodynamic thrust bearing is formed between the top face of the shaft and the thrust plate. Between an outer peripheral part at the base end of the shaft and an inner peripheral part at the open end of the hub is formed a seal part in which a larger clearance is formed between the shaft and the hub than a clearance in the hydrodynamic radial bearing and in which the oil surface is positioned. An oil surface adjusting hole and a plug for sealing the hole are provided in the case opposite the seal part.

Abstract: To provide a hydrodynamic bearing device which can be made small and thin with a sufficient length of the radial bearing being secured, which can prevent leakage of a lubricant even when there is a significant error in shape and/or a disturbance such as a shock and the like, and also which is not affected by deformation of a hub. A radial hydrodynamic bearing is provided between an outer periphery of the shaft and an inner periphery of a sleeve, and a thrust hydrodynamic bearing is formed between a lower surface of the shaft and an upper surface of the thrust plate. Also, a seal portion is formed by an inner peripheral surface of an upper recessed portion of the sleeve, and an outer peripheral surface of a cover plate.

Abstract: A dynamic pressure gas bearing motor in which a radial dynamic pressure gas bearing and a thrust dynamic pressure gas bearing are ensured to have sufficient length and diameter even though the clamping screw holes for introducing screws to reliably hold a disk are formed in the top wall of the motor rotation body.

Abstract: An object of the present invention to provide a hydrodynamic bearing device and a motor having a high performance and reliability which prevents deterioration in a temperature property due to a difference in coefficients of linear expansion of a sleeve and a shaft and prevents abrasion of bearing surfaces of both the sleeve and the shaft. The sleeve is formed of a copper metal material or an iron metal material and is treated with electroless nickel plating at least on the surface which opposes the shaft. The shaft includes 0.2% by weight C, 0.3% by weight Si, 8% by weight Mn, 0.2% by weight S, 2.5% by weight Ni, and 14% by weight Cr, and a main component of the shaft is a manganese alloy steel including Fe.

Abstract: A spindle motor is provided in which an end portion of a winding of a coil maintains insulation from a base and the end portion of the winding of the coil can be easily threaded through a hole of a printed circuit board when the end portion of the winding of the coil is drawn out. For this, the spindle motor includes a base fixed with a stator having a coil, an insulating sheet provided between the stator and the base, and a printed circuit board provided in the base on an outer side of the motor. Holes are formed in the base, insulating sheet and printed circuit board so as to communicate with each other, and an winding end portion of the coil is led out to the outside of the motor. The diameter C of the hole 19 in the printed circuit board and the diameter B of the hole 18 of the insulating sheet are smaller than the diameter A of the hole 17 of the base, and the diameter C of the hole 19 is larger than the diameter B of the hole 18.