Abstract: [Object] To provide a nitrided plate part that exhibits fatigue strength equivalent to or better than that of a carburized member, and a method for producing the same. [Solution] Provided is a nitrided plate part having predetermined components and structure. Nitrogen average content in a range in which a distance from a sheared end face of the part toward an interior of the nitrided plate part in a sheared end face normal direction is equal to or greater than 0.05 mm and equal to or less than 0.10 mm is equal to or greater than 0.4000% and equal to or less than 1.2000% in mass %, and minimum nitrogen content in a range in which the distance is equal to or greater than 0.015 mm and equal to or less than 0.200 mm is 0.0600% or more. After uncoiling a steel sheet coil, stretch and compressive deformation in a range of equal to or greater than 0.03% and equal to or less than 3.00% in amount of plastic strain are alternately applied to a surface layer of a steel sheet.

Abstract: An object of the present invention is to extend a retention time of clutch oil and enable to efficiently cool clutch plates. A clutch hub (42) which is engaged with the clutch plates in an outer circumference is a press-molding article made from one steel sheet. In its inner circumferential surface, plural oil grooves (74-4) for cooling the clutch plates, which are extended to a shat direction and have a space in a circumferential direction. Each of dams (76) as a press-molding portion extending to radial inward is formed at an end portion of each of the oil groove (74-4). The press-molding of the dams (76) is performed by pressing a front surface side of the clutch hub (42) by punches (82) and disposing inner pressing tools (84) at a back surface side. The dams (76) comprise an upright front surface (76-1) and a back surface (76-2), which are a molding surface molded by using the molding tools.

Abstract: An undercover (31) for rectifying airflow under a floor of a vehicle while driving the vehicle includes screw pedestals (42) for fixing screws (41) or nut pedestals for nuts, which are served as fastening points to a vehicle body (29). Interference caps (58) which are a molded product made from an elastic resin material are fitted between the adjacent pedestals. Under a state that the undercover (31) is engaged with and is attached to the vehicle body by the screws, a top portion (60) of the interference caps (59) is elastically deformed and is abutted to the opposite vehicle body surface, and the above abutment is maintained. Small clearance between the undercover and the vehicle body are maintained, and interference between the undercover and the vehicle due to vibration while driving is prevented, without changing the number of fastening points of the undercover to the vehicle body.

Abstract: The present invention relates to relates to an improvement of a dividing wall for a primary pulley in a belt-type continuously variable transmission. It is an object of the present invention to obtain a desired strength characteristic without performing a soft nitriding treatment and achieve cost reduction. A hydraulic pressure chamber is formed between the dividing wall and the movable sheave, and the dividing wall comprises a small-diameter annular disc portion 32 extended from the central cylinder portion 30, which is attached to a rotational shaft, in a radial direction. In the small-diameter annular disc portion 32, a connecting portion which is connected to an intermediate body portion 34 is a bent portion 38 which is bent at substantially 90 [deg].

Abstract: The present invention relates to a dynamic damper provided with a planetary dear device and damper springs and aims to obtain an increased adjustable range of gear ratio for obtaining a desired reduction of rotating fluctuation and to reduce a size in a radial direction. A plurality of planetary gears 34 are provided, each forms a stepped shape (Ravigneau type planetary gear device) and is constructed by a small diameter pinion 42 and a large diameter pinion 44 juxtaposed in an axial direction so as to be rotated integrally. Rotating elements, which are selectively and desirably arranged to mesh with the small diameter pinion 42 and the large diameter pinion 44, are large diameter and small diameter ring gears and large diameter and small diameter sun gears. In addition to a carrier connecting the plurality of stepped shaped planetary gears 34, two rotating elements are selected from the large diameter and small diameter ring gears and the large diameter and small diameter sun gears.

Abstract: A wet-type multi plate clutch having a obtaining hydraulic chamber, which is capable of increasing a fuel consumption efficiency by reducing a load of an oil pump for clutch oil for engaging the clutch and which realizes a simplified structure by eliminating a necessity of a canceller chamber. A disk spring 46 is, at its outer peripheral part, is supported by a clutch drum 10 and contacts, at its inner peripheral part, with a spring presser part 12-1 of the piston 12. The disk spring 46 faces, at the side opposite the piston 12, with clutch pack 20. A forward movement of the piston 12 by operating pressure in a hydraulic chamber is transmitted to the clutch pack 20 via the disk spring 46, resulting in an engaged condition of the clutch pack 20. A driving force of the piston 12 by the hydraulic oil pressure is boosted under a lever ratio a/b of the disk spring 46 and is transmitted to the clutch pack 20.

Abstract: [Object] To provide a nitrided plate part that exhibits fatigue strength equivalent to or better than that of a carburized member, and a method for producing the same. [Solution] Provided is a nitrided plate part having predetermined components and structure. Nitrogen average content in a range in which a distance from a sheared end face of the part toward an interior of the nitrided plate part in a sheared end face normal direction is equal to or greater than 0.05 mm and equal to or less than 0.10 mm is equal to or greater than 0.4000% and equal to or less than 1.2000% in mass %, and minimum nitrogen content in a range in which the distance is equal to or greater than 0.015 mm and equal to or less than 0.200 mm is 0.0600% or more. After uncoiling a steel sheet coil, stretch and compressive deformation in a range of equal to or greater than 0.03% and equal to or less than 3.00% in amount of plastic strain are alternately applied to a surface layer of a steel sheet.

Abstract: A wet-type multi plate clutch capable of being used for a transmission in an automobile. A clutch pack 50 is provided with a plurality of drive plate 52 and a plurality of driven plates 54. The drive plates 52 have single surfaces on which clutch facings 55 are fixed and opposed surfaces on which annular grooves 58 along entire peripheral lengths are formed. The driven plates 54 have single surfaces on which clutch facings 56 are fixed and opposed surfaces on which annular grooves 59 along entire peripheral lengths are formed. The sliding surfaces of the drive plates 52 and the driven plates 54 are arranged between the clutch facings 55 and 56, which are axially adjacent with each other.

Abstract: A lockup apparatus for a torque converter, which has a drive plate, a driven plate and damper springs connecting the drive plate and the driven plate in a rotating direction, is provided. Each damper spring has a pair of divided parts. An equalizer plate as an intermediate member is arranged so as to slide rotatably on bearing parts of the drive plate, and supporting parts fixed to the equalizer plate are arranged between the divided parts of the damper springs. A bearing part of the drive plate has an outer peripheral surface having an arc shape with a center or a curvature which is offset from a center of an arc shape of an inner peripheral surface of the equalizer plate.

Abstract: The present invention relates to a lockup apparatus for a torque converter and aims to obtain a smooth relative movement of a equalizer plate with respect to a deformation of a drive plate. The drive plate 26 as an inlet sided rotating member is connected to a driven plate 22 as an outlet sided rotating member by means of damper springs 28 in a rotating direction. The damper spring 28 is constructed by a pair of divided parts 28A and 28B. An equalizer plate as an intermediate member 29 is arranged so as to slide rotatably on bearing parts 26-1 of the drive plate 26 and supporting parts 40 fixed to the equalizer plate 29 are arranged between the divided parts 28A and 28B of the damper springs 28. The bearing part 26-1 of the drive plate 26 has an outer peripheral surface 26-1a?, of which arc shape has a center C? of a curvature which is offset from the center C of the arc shape of the inner peripheral surface 29a of the equalizer plate 29.

Abstract: The present invention relates to a dynamic damper provided with a planetary dear device and damper springs and aims to obtain an increased adjustable range of gear ratio for obtaining a desired reduction of rotating fluctuation and to reduce a size in a radial direction. A plurality of planetary gears 34 are provided, each forms a stepped shape (Ravigneau type planetary gear device) and is constructed by a small diameter pinion 42 and a large diameter pinion 44 juxtaposed in an axial direction so as to be rotated integrally. Rotating elements, which are selectively and desirably arranged to mesh with the small diameter pinion 42 and the large diameter pinion 44, are large diameter and small diameter ring gears and large diameter and small diameter sun gears. In addition to a carrier connecting the plurality of stepped shaped planetary gears 34, two rotating elements are selected from the large diameter and small diameter ring gears and the large diameter and small diameter sun gears.

Abstract: Provided is a coupling structure between a front pillar and a side sill of an automobile, which improves the steering stability of the automobile and realizes a high productivity. A reinforcing member 8 is provided inside a front pillar 1 having a closed cross-section so as to extend in the front-rear direction of the automobile. The reinforcing member 8 is coupled to a front pillar outer 2. An end portion of the reinforcing member 8 at the rear side of the automobile is extended toward a side sill 4 to form a reinforcing member extension 8a. The reinforcing member extension 8a is coupled to a side sill outer 5.

Abstract: A vehicular metal absorber for efficiently absorbing by a short stroke the impact energy received from legs of a pedestrian at the time of a collision between a pedestrian and an automobile, reducing the residual crush, and protecting the legs of the pedestrian, that is, a long vehicular metal absorber comprising a center flange, a top web and bottom web connected to the two sides of the center flange, a top flange connected to the top web, and a bottom flange connected to the bottom web and formed overall into a hat shaped cross-section, wherein an internal angle ?1 formed by the top web with a flange plane including the top flange and bottom flange and an internal angle ?2 formed by the bottom web with the flange plane are respectively over 0 degree to less than 90 degrees, and in that one or both of the top web and bottom web are provided with a recessed or projecting bead substantially parallel to a front-back direction of a vehicle.

Abstract: Provided is a coupling structure between a front pillar and a side sill of an automobile, which improves the steering stability of the automobile and realizes a high productivity. A reinforcing member 8 is provided inside a front pillar 1 having a closed cross-section so as to extend in the front-rear direction of the automobile. The reinforcing member 8 is coupled to a front pillar outer 2. An end portion of the reinforcing member 8 at the rear side of the automobile is extended toward a side sill 4 to form a reinforcing member extension 8a. The reinforcing member extension 8a is coupled to a side sill outer 5.

Abstract: This manufacturing method of a fuel tank is for manufacturing a metallic fuel tank having a concavo-convex portion in a course of seam welding using a seam welder, wherein the seam welding is performed using the seam welder provided with a non-interfering space where interference with the fuel tank is avoided, while changing the position of the fuel tank relative to the seam welder.

Abstract: Provided is a structure that ensures passenger space in the event of vehicle roll over and minimizes protrusion of the roof side portion, which has highly efficient load absorption and distribution, into the vehicle cabin, without sacrificing vehicle cabin space or requiring deep drawing press molding for increasing the section modulus of the roof side portion. A roof side rail has a closed cross section formed by connection flanges of an outer panel and an inner panel joining with each other, and a relationship between A, which is a product of a thickness and a yield point of the outer panel, and B, which is a product of a thickness and a yield point of the inner panel, satisfies A?B.

Abstract: A filler pipe for introducing a fuel from a fuel inlet to a fuel tank. Connected to the filler pipe 10 is a bracket 14, which has a cross-section of a “hat” shape and is constructed by bottom wall portions 14-1 located at its ends and is under a face to face contact with an outer surface of the filler pipe 10 and an upper wall portion 14-3 located between the bottom wall portions 14-1 and spaced from the opposite outer surface of the filler pipe 10. The bottom wall portions 14-1 are welded to the opposed surface of the filler pipe. The bracket 14 has a wing part 14-5 extending integrally from the upper wall part 14-3 and having a free end 14-5? welded to the opposed surface of a breather pipe.

Abstract: A forward/reverse change-over mechanism (3) of an automatic transmission comprises a forward clutch (5) inside a drum (7) with the base (7c) which rotates together with an input shaft (1). The forward clutch (5) engages by driving a piston (9) housed in the drum (7) by the oil pressure of an oil chamber (10) between a base (7c) and the piston (9). Projecting bearings (16) which seat the piston (9) are formed by press-forming at equal angular intervals concentrically with the axial center of the drum (7) in the base (7c). By installing a sensor body (18) which responds to the passage of depressions (17) formed underneath the bearings (16), the forward/reverse change-over mechanism (3) can be made compact and manufactured with a small number of parts and machining steps.

Abstract: A bumper beam for automobiles is composed in cross section of a top wall, a bottom wall opposed to the top wall, a pair of lateral walls connecting the top and bottom walls at opposite ends, one of the lateral walls being a collision side lateral wall and the other a vehicle-mounted side lateral wall, and a connection rib provided intermediate between the top and bottom walls and connecting the lateral walls. The collision side lateral wall is thicker than the vehicle-mounted side lateral wall, and both corners at opposite ends of the collision side lateral wall are curved with a radius of curvature R of 0.1-0.3 of the length of the collision side lateral wall and both corners at opposite ends of the vehicle-mounted side lateral wall are curved with a radius of curvature of 0.6-2.0 of the thickness of the vehicle-mounted side lateral wall. Alternatively, radius of curvature R may be 0.2-0.6 of the length of the bottom wall.

Abstract: A filler pipe for introducing a fuel from a fuel inlet to a fuel tank. Connected to the filler pipe 10 is a bracket 14, which has a cross-section of a “hat” shape and is constructed by bottom wall portions 14-1 located at its ends and is under a face to face contact with an outer surface of the filler pipe 10 and an upper wall portion 14-3 located between the bottom wall portions 14-1 and spaced from the opposite outer surface of the filler pipe 10. The bottom wall portions 14-1 are welded to the opposed surface of the filler pipe. The bracket 14 has a wing part 14-5 extending integrally from the upper wall part 14-3 and having a free end 14-5′ welded to the opposed surface of a breather pipe.