摘要:
A wheel bearing device of the invention includes a flanged shaft member that includes a shaft portion to which a rolling bearing is assembled, a fitting shaft portion that is formed on one end side of the shaft portion and that is fitted to a center hole of a wheel, and a plurality of flange portions that extend radially outward on an outer peripheral surface located between the shaft portion and the fitting shaft portion and each of which has a through bolt hole in which a hub bolt for fastening the wheel is arranged. Each flange portion of the wheel bearing device is formed by side extrusion when a forged recess is formed at a center of an end surface of the fitting shaft portion by cold forging. An edge portion of a cross-sectional shape taken perpendicularly to a longitudinal direction of each flange portion is formed in an R-chamfered shape.
摘要:
A hub unit for vehicle according to the invention includes a flange formed with plural bolt-hole groups each of which includes plural bolt holes each having a female thread of the same nominal diameter formed in its inside surface and each of which has a hole-pattern of the bolt holes circumferentially arranged on the same pitch circle diameter with equal spacing. The plural bolt-hole groups are mutually different in at least either one of the nominal female-thread diameter and the pitch circle diameter R, so that plural types of components having different hole-patterns may be directly mounted to the flange without using an adaptor as an independent member. This leads to cost reduction.
摘要:
A rolling bearing device for a wheel includes: a hub wheel including a hub spindle to be assembled with a rolling bearing, a flange formed on the hub spindle, and a bolt hole formed through the flange; a hub bolt to be press-fitted in the bolt hole, in which hub bolt includes a shank formed with a serrated shank portion to press-fitted to bite the bolt hole, an intermediate shank portion and a threaded portion in this order; and an annular ridge formed on an inner circumference of an opening on a press-fit exit side of the bolt hole. The annular ridge have a diameter smaller than that of the bolt hole and comes into contact or close to the intermediate shank portion to clog the bolt hole.
摘要:
There are contained the steps of forming sequentially a first conductive film, a dielectric film, and a second conductive film on a first insulating film, forming an upper electrode of a capacitor by patterning the second conductive film, patterning the dielectric film to leave under the upper electrode, forming a lower electrode of the capacitor by patterning the first conductive film, covering the capacitor and the first insulating film with a second insulating film, and annealing at least one of the first insulating film and the second insulating film in an inert-gas atmosphere and then exposing the film to an N2O plasma.
摘要翻译:包括在第一绝缘膜上依次形成第一导电膜,电介质膜和第二导电膜的步骤,通过图案化第二导电膜形成电容器的上电极,使电介质膜图案化, 上电极,通过图案化所述第一导电膜,用第二绝缘膜覆盖所述电容器和所述第一绝缘膜,形成所述电容器的下电极,并且将所述第一绝缘膜和所述第二绝缘膜中的至少一个退火, 气体气氛,然后将膜暴露于N 2 O 3等离子体。
摘要:
A wheel rolling bearing unit has a hub spindle having flange and shaft-shaped sections, an inner-ring raceway surface on the outer peripheral surface of the shaft-shaped section; an outer ring member disposed around the outer periphery of the shaft-shaped section, an outer-ring raceway surface on the inner peripheral surface thereof; and rolling elements between the inner-ring raceway and outer-ring raceway surfaces. The flange section is on one side of the spindle in a rotation axis direction thereof; on the flange surface, a cylindrical spigot joint section protruding on one side is coaxial with the spindle; the boundary section of the flange surface and the outer peripheral surface of the spigot joint section has an arc-shaped boundary surface to connect smoothly toward the flange surface. The surface roughness of the boundary surface is finer than that of the flange surface and the outer peripheral surface of the spigot joint section.
摘要:
In a rolling bearing device for a road-wheel including an inner shaft 1 that is provided with, on its outer-side end 10, a flange 4 on which a road-wheel member mounted, and an outer ring 2 disposed around the inner shaft 1, the inner shaft has, on its outer side, a hair-line pattern portion 5 that is formed by turning and that permits the manufacturing attribute of the bearing device to be identified based on the difference in the form of hair lines so formed. This permits the manufacturing attribute of the bearing device to be identified after the bearing device is assembled in a vehicle body. Furthermore, the representation of the manufacturing attribute can be readily implemented during a manufacturing step.
摘要:
The semiconductor device comprises a capacitor formed over a semiconductor substrate 10 and including a lower electrode 32, a dielectric film 34 formed over the lower electrode and an upper electrode 36 formed over the dielectric film, a first insulation film 42 formed over the semiconductor substrate and the capacitor, a first interconnection 48 formed over the first insulation film and electrically connected to the capacitor, a first hydrogen diffusion preventive film 50 for preventing the diffusion of hydrogen formed over the first insulation film, covering the first interconnection, a second insulation film 58 formed over the first hydrogen diffusion preventive film and having the surface planarized, a third insulation film 62 formed over the second insulation film, a second interconnection 70b formed over the third insulation film, and a second hydrogen diffusion preventive film 72 for preventing the diffusion of hydrogen formed on the third insulation film, covering the second interconnection. Since the second hydrogen diffusion preventive film positioned above the capacitor is planarized, the dielectric film is surely prevented from being reduced with hydrogen.
摘要:
A W plug (24) is formed and a W oxidation preventing barrier metal film (25) is formed thereon. After that, an SiON film (27) thinner than the W oxidation preventing barrier metal film (25) is formed and Ar sputter etching is performed on the SiON film (27). As a result, the shape of the surface of the SiON film (27) becomes gentler and deep trenches disappear. Next, an SiON film (28) is formed on the whole surface. A voidless W oxidation preventing insulating film (29) is composed of the SiON (28) film and the SiON film (27).
摘要:
In a rolling bearing device for a road-wheel including an inner shaft 1 that is provided with, on its outer-side end 10, a flange 4 on which a road-wheel member mounted, and an outer ring 2 disposed around the inner shaft 1, the inner shaft has, on its outer side, a hair-line pattern portion 5 that is formed by turning and that permits the manufacturing attribute of the bearing device to be identified based on the difference in the form of hair lines so formed. This permits the manufacturing attribute of the bearing device to be identified after the bearing device is assembled in a vehicle body. Furthermore, the representation of the manufacturing attribute can be readily implemented during a manufacturing step.
摘要:
In a rolling bearing device for a road-wheel including an inner shaft 1 that is provided with, on its outer-side end 10, a flange 4 on which a road-wheel member mounted, and an outer ring 2 disposed around the inner shaft 1, the inner shaft has, on its outer side, a hair-line pattern portion 5 that is formed by turning and that permits the manufacturing attribute of the bearing device to be identified based on the difference in the form of hair lines so formed. This permits the manufacturing attribute of the bearing device to be identified after the bearing device is assembled in a vehicle body. Furthermore, the representation of the manufacturing attribute can be readily implemented during a manufacturing step.