Abstract: An injection molding die for producing a molded product having an appearance surface, an injection molding method for producing a molded product having an appearance surface, and a resin molded product molded by the injection molding method which is free from occurrence of appearance deficiency such as a flow mark or the like that is a drawback in appearance. A molten thermoplastic resin material is injected into a cavity defined by a molded product's appearance surface forming portion (4a) and a molded product's rear surface forming portion (6a) through one or more direct gates and one or more hot runners to fill the cavity with the molten resin material, thereby performing injection molding.

Abstract: An air-bag device capable of improving degree of freedom in setting of reaction forces according to physical frames of occupants, a vehicle occupant's lower limb protecting device and a device for protecting an occupant at the time of vehicle side collision using the air-bag device. Knees of an occupant of large build whose inertia load at the time of collision is great are assuredly protected by collective energy absorbing action of the upper cylinders (121, 121) and the lower cylinders (122, 122) at the time of collision. In a case of an occupant of small build whose inertia load at the time of collision is small, loads from the upper cylinders (121, 121) and the lower cylinders (122, 122) are exerted on the occupant in appropriate proportions according to physical size of the occupant to fulfill impact absorption at the time of collision.

Abstract: An injection molding die for producing a molded product having an appearance surface, an injection molding method for producing a molded product having an appearance surface, and a resin molded product molded by the injection molding method which is free from occurrence of appearance deficiency such as a flow mark or the like that is a drawback in appearance. A molten thermoplastic resin material is injected into a cavity defined by a molded product's appearance surface forming portion (4a) and a molded product's rear surface forming portion (6a) through one or more direct gates and one or more hot runners to fill the cavity with the molten resin material, thereby performing injection molding.

Abstract: An injection molding die for producing a molded product having an appearance surface, an injection molding method for producing a molded product having an appearance surface, and a resin molded product molded by the injection molding method which is free from occurrence of appearance deficiency such as a flow mark or the like that is a drawback in appearance. A molten thermoplastic resin material is injected into a cavity defined by a molded product's appearance surface forming portion (4a) and a molded product's rear surface forming portion (6a) through one or more direct gates and one or more hot runners to fill the cavity with the molten resin material, thereby performing injection molding.

Abstract: An air-bag device capable of improving degree of freedom in setting of reaction forces according to physical frames of occupants, a vehicle occupant's lower limb protecting device and a device for protecting an occupant at the time of vehicle side collision using the air-bag device. Knees of an occupant of large build whose inertia load at the time of collision is great are assuredly protected by collective energy absorbing action of the upper cylinders (121, 121) and the lower cylinders (122, 122) at the time of collision. In a case of an occupant of small build whose inertia load at the time of collision is small, loads from the upper cylinders (121, 121) and the lower cylinders (122, 122) are exerted on the occupant in appropriate proportions according to physical size of the occupant to fulfill impact absorption at the time of collision.

Abstract: Provided is a welded processed product which is reduced in the hear deformation thereof and can exhibit improved the welding strength between component processed articles. A welded processed products, wherein a first convex column (13) and second convex columns (14A and 14B) to be subjected to the vibration-welding with a joining surface (11a) of a first processed article (11) with each other are provided on a joining surface (12a) of a second processed article (12). When or after the above first and second convex columns (13) and the second convex columns (14A and 14B) and the joining surface 11a of the first processed article 11 are vibration-welded together by use of a vibration welding machine, a cooling fluid from a cooling fluid source 26 is supplied to a region surrounded by the first convex column 13 via a supply port 15 and discharged therefrom via a discharge port 16 so as to effect cooling in the region.

Abstract: An injection molding die for producing a molded product having an appearance surface, an injection molding method for producing a molded product having an appearance surface, and a resin molded product molded by the injection molding method which is free from occurrence of appearance deficiency such as a flow mark or the like that is a drawback in appearance. A molten thermoplastic resin material is injected into a cavity defined by a molded product's appearance surface forming portion (4a) and a molded product's rear surface forming portion (6a) through one or more direct gates and one or more hot runners to fill the cavity with the molten resin material, thereby performing injection molding.

Abstract: The present invention provides for an automobile-use interior cover for accommodating an airbag apparatus, the said cover 11 being processed to have an airbag expansion and release-use fracture-opening weakened line section. The automobile-use interior cover 11 consists of a single laminated layer by laminating in such a manner of welding a hard polypropylene resin base plate layer 111 of desired thickness, a middle layer of foamed polypropylene resin 112 of desired thickness that is attached to the upper surface of the hard polypropylene base plate 11, and an outer upper layer 113 covering and attached to this foamed polypropylene resin middle layer 112. The outer upper layer 113 itself consists of two component layers 113A and 113B, both composed of thermo-plastic polyolefin (TPO), each of which is made of material differing from each other in the degree of their physical ability to absorb infrared radiation.

Abstract: A vehicle airbag apparatus in which a frame and reinforcement members can be vibration-welded to an instrument panel with uniform strength and without distortion or discoloration of the instrument panel cover caused by the vibration welding. First weld ribs on a frame and second weld ribs on reinforcement members joined to the frame have a length which extends in the direction of vibration welding. The lengths of the first weld ribs and the second weld ribs extending in the vibration direction are set to be three times or more as long as an amplitude of the vibration welding. Passages for flowing a cooling fluid along the first weld ribs are provided on the joining surfaces of the joint flange, and furthermore, passages for flowing the cooling fluid along the second weld ribs may be provided on the joining surfaces of the reinforcements.

Abstract: A large number of small reflection portions are continuously formed over a back face of a base member opposite the light impinging side, in an arbitrary arrangement. The small reflection portions are each formed to have a boundary surface for reflection, interference, and diffraction of incident light impinging onto the base member, to thereby produce random changes in the brightness of reflection light over the entirety of the decoration panel. A reflection layer is formed on the boundary surfaces of the small reflection portions such that the boundary surfaces function as mirror surfaces and reflect light propagating through the base member toward the front face of the base member.

Abstract: A large number of small reflection portions are continuously formed over a back face of a base member opposite the light impinging side, in an arbitrary arrangement. The small reflection portions are each formed to have a boundary surface for reflection, interference, and diffraction of incident light impinging onto the base member, to thereby produce random changes in the brightness of reflection light over the entirety of the decoration panel. The small reflection portions have concave boundary surfaces having three-dimensional shape determined though imparting a 1/f fluctuation to a triangular-roof-like basic shape. When at least one of the direction of the incident light in relation to the base member, a viewing point in relation to the base member, and the position of the base member is changed, the small reflection portions generate an irregularly changing light-dark pattern in the brightness of reflection right from the small reflection portions.

Abstract: An airbag apparatus for a vehicle includes an interior panel, an airbag; an inflater, a frame, and a pair of reinforcement members. When the airbag inflates, a fracture-opening section of the interior panel is ruptured and divided into two fracture-opening subsections, which are turned outward about hinge portions of the reinforcement members in a manner of a casement. Hinge motion restricting members are provided on the frame. When the fracture-opening subsections are turned, the hinge motion restricting members come into engagement with the hinge portions. This configuration eliminates interference between the fracture-opening subsections and the interior panel, which interference would otherwise occur when the fracture-opening subsections are opened in the manner of a casement.

Abstract: The invention provides an airbag apparatus for an automobile in which a frame and reinforcement members can be vibration-welded to an instrument panel with uniform strength and the product can be prevented from being thermally deformed or discolored by heat caused by the vibration welding. First weld ribs projectedly provided on joining surfaces of an joint flange of a frame are extended long in a vibration direction of vibration welding, second weld ribs projectedly provided on joining surfaces of reinforcements of reinforcement members are extended long in the vibration direction of the vibration welding, and in particular, the lengths of the first weld ribs and the second weld ribs extending in the vibration direction are set to be three times or more as long as an amplitude of the vibration welding.

Abstract: Provided is a welded processed product which is reduced in the hear deformation thereof and can exhibit improved the welding strength between component processed articles. A welded processed products, wherein a first convex column (13) and second convex columns (14A and 14B) to be subjected to the vibration-welding with a joining surface (11a) of a first processed article (11) with each other are provided on a joining surface (12a) of a second processed article (12). When or after the above first and second convex columns (13) and the second convex columns (14A and 14B) and the joining surface 11a of the first processed article 11 are vibration-welded together by use of a vibration welding machine, a cooling fluid from a cooling fluid source 26 is supplied to a region surrounded by the first convex column 13 via a supply port 15 and discharged therefrom via a discharge port 16 so as to effect cooling in the region.

Abstract: An airbag apparatus uses an interior panel of an automobile. The interior panel is formed of a multi-layer sheet including a surface layer, an intermediate foam layer, and a base layer. The interior panel has front and rear hinge grooves and left and right fracture grooves for defining a fracture-opening section, and a center fracture groove for dividing the fracture-opening section into front and rear fracture-opening subsections to be split apart from each other in a casement condition. The hinge grooves, the center fracture groove, and the left and right fracture grooves are formed of laser-machined holes which have different depths and do not pass through the surface layer of the interior panel.

Abstract: An airbag apparatus utilizes an interior panel of a vehicle. The interior panel has a rectangular fracture-opening section defined by at least one hinge groove and one fracture groove formed on an inside surface of the interior panel through irradiation with laser pulses. The fracture groove includes bridge portions and continuous hole portions provided alternately. Each of the bridge portions includes no laser-formed hole and has a thickness equal to the interior panel. Each of the continuous hole portions is composed of first holes for fracture which have a first depth and are successively formed between adjacent bridge portions through irradiation with laser pulses, and second holes which have a second depth smaller than the first depth and are each formed between adjacent first holes, through irradiation with laser pulses, so as to remove an original-thickness portion between the adjacent first holes.

Abstract: An airbag cover includes a panel member composed of a substrate, a foam layer, and a surface layer. A fracture groove is formed on the reverse surface of the panel member so as to define in a fracture-opening section thereof two fracture-opening subsections openable in the manner of a casement. The fracture groove has a depth corresponding to the thickness of the substrate or a depth slightly greater than the thickness of the substrate. This configuration prevents generation of sink marks or depressions on the surface of the cover. The fracture groove is composed of a straight center fracture groove section, two V-shaped branch fracture groove sections extending from the opposite ends of the center fracture groove section, and side fracture groove sections extending from distal ends of the V-shaped branch fracture groove sections in opposite directions perpendicularly to the center fracture groove section.

Abstract: An airbag apparatus for a vehicle includes an interior panel, an airbag; an inflater, a frame, and a pair of reinforcement members. When the airbag inflates, a fracture-opening section of the interior panel is ruptured and divided into two fracture-opening subsections, which are turned outward about hinge portions of the reinforcement members in a manner of a casement. Hinge motion restricting members are provided on the frame. When the fracture-opening subsections are turned, the hinge motion restricting members come into engagement with the hinge portions. This configuration eliminates interference between the fracture-opening subsections and the interior panel, which interference would otherwise occur when the fracture-opening subsections are opened in the manner of a casement.

Abstract: The present Invention provides for an automobile-use interior cover for accommodating an airbag apparatus, the said cover 11 being processed to have an airbag expansion and release-use fracture-opening weakened line section. The automobile-use interior cover 11 consists of a single laminated layer by laminating in such a manner of welding a hard polypropylene resin base plate layer 111 of desired thickness, a middle layer of foamed polypropylene resin 112 of desired thickness that is attached to the upper surface of the hard polypropylene base plate 11, and an outer upper layer 113 covering and attached to this foamed polypropylene resin middle layer 112. The outer upper layer 113 itself consists of two component layers 113A and 113B, both composed of thermo-plastic polyolefin (TPO) , each of which is made of material differring from each other in the degree of their physical ability to absorb infrared radiation.

Abstract: An airbag apparatus for an automobile includes an airbag case for accommodating an airbag, a fracture-opening section of the surface panel, and a reinforcement frame member having a frame portion, at least one fracture-section reinforcement portion, and an edge reinforcement potion. The frame portion has an engagement portion to which the airbag case is connected. The fracture-section reinforcement portion is joined to the inside surface of the surface panel to cover and reinforce the fracture-opening section. The edge reinforcement portion is joined to the inside surface of the surface panel to cover and reinforce a surface panel portion surrounding the fracture-opening section.