摘要:
A spindle motor comprises a housing 10 including a through hole with a pair of apertures, one of the apertures being closed by a thrust plate 70 and the other aperture being open; a bearing 60 accommodated in the housing 90; a rotating shaft 30 inserted into the bearing 60; a displacement restraining structure for restraining movement of the rotating shaft 30 toward the open aperture by engaging the rotation shaft 30 with the bearing 60; a rotating member secured to the rotating shaft; and a motor generating electromagnetic function for rotating the rotating member. The through hole of the housing 90 includes a large diameter portion 92A at the thrust plate 70 side and a small diameter portion 92B at the open aperture side, and a stepped portion 93 is formed at a transition portion between the large diameter portion 92A and the small diameter portion 92B. At least a portion of the bearing 60 is located at the large diameter portion 92A side of the housing 90, and engages with the stepped portion 93 of the housing 90.
摘要:
A bearing unit comprises a bearing 60 formed of a sintered metal in which a magnetized magnetic powder is dispersed in its matrix and at least pores exposed on a bearing surface thereof are sealed by impregnation with a resin; a non-magnetic housing 90 accommodating the bearing 60; and a lubricating fluid M made of a magnetic fluid.
摘要:
The spindle motor includes a rotational shaft 30 which has a conical portion 34, whose outer surface gradually widens toward a thrust dynamic pressure bearing 70, and a straight portion 33 with a fixed outer diameter. Radial dynamic pressure bearing 60 supports the radial load of the rotating shaft 30. The radial bearing has a conical bearing surface 64 and a straight bearing surface 63 corresponding to the conical portion 34 and the straight portion 33 of the rotating shaft 30, respectively. Rotating shaft 30 is supported and aligned during rotation by fluid dynamic forces generated by the conical portion 34.
摘要:
A production method for a sintered bearing, comprises compacting a raw metallic material powder into a bearing green compact; sintering the green compact into a sintered compact; and forming a resin coating over the entire surface of the sintered compact by electrodeposition.
摘要:
To provide a fluid control apparatus capable of reducing the space, while reducing the cost. A fluid control apparatus has a fluid controlling unit and a fluid introducing unit. The fluid introducing unit is divided into three parts: a first and a second inlet-side shutoff/open parts disposed on the inlet side, each made up of 2×N/2, disposed between the first and second inlet-side shutoff/open parts and the fluid controlling unit.
摘要:
A cowling structure for a saddle-ride type vehicle for cooling an engine and providing a windshield for a rider. The cowling structure includes a seat for a rider to sit thereon, the seat is arranged behind and above an engine suspended from a vehicle body frame. An under cowl covers at least part of a lower portion of the engine. The under cowl is formed to cover at least part of a side surface of the engine. A guide portion is provided in an upper portion of the under cowl, the guide portion extending inward in a vehicle width direction and toward the side surface of the engine. An opening is provided in front of the guide portion, the opening introducing a flow of air into the under cowl. The guide portion has a slope surface which slopes downward from the front to the rear of the vehicle.
摘要:
A plasma processing apparatus includes a process container configured to have a vacuum atmosphere therein. An upper electrode is disposed to face a target substrate placed within the process container. An electric feeder includes a first cylindrical conductive member continuously connected to the upper electrode in an annular direction. The electric feeder is configured to supply a first RF output from a first RF power supply to the upper electrode.
摘要:
According to the present invention, there is disclosed a gas introduction system for temperature adjustment comprising passing a gas whose temperature is managed for the temperature adjustment of an object to be processed between a mounting surface of a mounting base for holding the object to be processed under vacuum and a back surface of the object to be processed through a gas supply line, controlling a flow rate adjustment valve by control means based on a measured pressure of the gas supply line measured by a manometer, and adjusting a gas flow rate to the gas supply line so as to obtain a set pressure, so that the gas pressure can be set to a predetermined value in a short time, and the system is miniaturized with little waste of the gas.
摘要:
A method of detecting abnormalities in flow rate in pressure-type flow controller. The method checks the flow rate for abnormalities while controlling the flow rate of fluid in a pressure-type flow controller FCS using an orifice—the pressure-type flow controller wherein with the upstream pressure P1 maintained about two or more times higher than the downstream pressure P2, the downstream flow rate QC is calculated by the equation QC=KP1 (K: constant) and wherein the control valve CV is controlled on the basis of the difference signal QY between the calculated flow rate QC and the set flow rate QS.
摘要:
Provided is a gate valve for opening and closing an aperture formed in a body of a chamber and designed so that an object is loaded into or unloaded from the chamber, comprising a lift mechanism provided on a side portion of the chamber body, a supporting portion supported by a lift mechanism for up-and-down motion, a valve plate supported by the supporting portion and movable between a closed position such as to close the aperture of the chamber body and an open position such that the valve plate is separated from the aperture to leave the aperture open as the supporting portion is moved up and down by the lift mechanism, and a separating mechanism for allowing the valve plate to move to a position ahead of the aperture so that the valve plate is separated from the aperture.