Kobe Steel, Ltd.

Toyota Jidosha Kabushiki Kaisha

Daido Kogyo Co., Ltd.

Hideki Ishitobi

Narikazu Hashimoto

Koki Ikeda

Masatoshi Yoshida

Tsunetake Tsuyoshi

Akio Sugimoto

Zenzo Yamaguchi

Ichiro Yamagiwa

Yoshikazu Mukai

Toru Hashimura

Hiroaki Hosoi

Haruyuki Konishi

Satoshi Nimura

Masaaki Morikawa

Shingo Shimoaka

Hiroko Kashima

Masao Kobori

Tomomichi Ohtani

Kenji Nakaya

Kei Chino

Keisuke Akasaki

Koji Oishi

Tsuyoshi Yamazaki

A method for manufacturing an electric vehicle battery case includes: preparing a frame configured to define a through space inside and a flat plate made of resin; superposing and disposing the flat plate on the frame; and applying pressure to the flat plate from an opposite side from the frame to press the flat plate against the frame to cause the flat plate to swell in the through space, thereby deforming the flat plate into a tray having a bathtub shape including a bottom wall and a peripheral wall provided at a peripheral edge of the bottom wall and configured to define an opening portion, and joining by press-fitting the tray to the frame.

Method for manufacturing electric vehicle battery case and electric vehicle battery case

A door beam includes an outer flange, an inner flange, and a pair of webs connecting the outer flange and the inner flange. The outer flange, the inner flange, and the pair of webs define a closed cross-sectional portion. The outer flange includes an outer central portion constituting the closed cross-sectional portion, and outer protruding portions protruding outward from the closed cross-sectional portion. The inner flange is formed with an attachment press working portion having been subjected to press working so as to serve as an attachment portion with respect to the inner panel at both end portions in the longitudinal direction. The outer protruding portion is formed with a mastic press working portion having been subjected to press working so as to serve as an attachment portion with respect to the outer panel.

Vehicle door beam and method for manufacturing the same

A porous sound absorbing structure according to the present invention includes an outer materialhaving a smooth curved shape, an inner materialhaving an uneven shape with a perimeter thereof combined with a perimeter of the outer materialto form a hollow portion S between the outer materialand the inner material, and a reinforcing plate materialhaving a large number of through holesthe reinforcing plate material being attached to a surface of the inner materialon the side of the hollow portion S in such a manner that an air layer is formed between the reinforcing plate material and the surface. A sound absorbing property is given to an interior of the hollow portion S by the reinforcing plate material

Porous sound absorbing structure

Provided is a vehicle hood that allows a reduction in thickness of an outer panel while providing stiffness of the outer panel. A vehicle hood includes an outer panel, an inner panel, and a plurality of adhesive components. The inner panel has a plurality of beads. Each bead has a support part that supports each adhesive component. The adhesive components are provided on the support parts so as to be intermittently aligned along a specific direction. A support-part interval between the support parts adjacent to each other in an intersecting direction is smaller than an adhesive-component interval between the adhesive components adjacent to each other on the support parts.

Vehicle hood

A porous sound absorbing structure according to the present invention includes an outer materialhaving a smooth curved shape, an inner materialhaving an uneven shape with a perimeter thereof combined with a perimeter of the outer materialto form a hollow portion S between the outer materialand the inner material, and a reinforcing plate materialhaving a large number of through holes, the reinforcing plate material being attached to a surface of the inner materialon the side of the hollow portion S in such a manner that an air layer is formed between the reinforcing plate material and the surface. A sound absorbing property is given to an interior of the hollow portion S by the reinforcing plate material

An inner panel of a vehicle hood has a 0.2% proof stress of 70 MPa or more and 120 MPa or less after assembling of the inner panel and completion of bake coating. An outer panel has a 0.2% proof stress of 150 MPa or more. The outer panel is made of JIS 5000 or 6000 series aluminum alloy plate material, and the inner panel is made of a JIS 3000 series aluminum alloy plate material. The inner panel has hat-shaped main beads arranged in a center portion. An elongation amount (L&#x2212;L0)/L0 determined by cross-section line length L of a concave or convex portion of the main bead projected from the surface of the center portion and a line length L0 of a line segment linearly connecting ends of the portion is 0.4 &#x3b4; to 0.6 &#x3b4; to a breaking elongation &#x3b4; in uniaxial tensile deformation.

A vehicle hood panel is formed by bonding an outer panel and an inner panel to each other. Disposed along the outer peripheral edge of the inner panel is an outer peripheral portion to which a cushion member and hinges for attaching the hood panel to a vehicle are to be later fastened. Adhesive bonding surfaces which are to be bonded to the outer panel by mastic are disposed on the region surrounded by the outer peripheral portion, and a plurality of reinforcement beads are formed between the adhesive bonding surfaces. At least some of the adhesive bonding surfaces and/or reinforcement beads are bended so as to extend toward the hinges or the cushion member as seen in a plan view.

Vehicle hood panel

A bumper reinforcement includes a tubular body including a front wall that serves as an impact surface and a rear wall on a vehicle body side, the tubular body extending in a vehicle width direction and having a hollow cross section; and a tow hook attachment structure for allowing a tow hook to be removably attached thereto. The tow hook attachment structure includes a pair of cylindrical protrusions respectively integrally formed with the front and rear walls of the tubular body by shaping parts of the walls, the cylindrical protrusions being disposed at predetermined positions on the front and rear walls in the vehicle width direction so as to face each other and so as to protrude inward into the hollow cross section, and at least one of the pair of protrusions includes a threaded portion for allowing a threaded portion of the tow hook to be screwed thereinto.

Bumper reinforcement and method of manufacturing the same

An anti-collision component consisting of a metal hollow profile for automobiles includes a collision side flange, a body side flange, and a web connected to the flanges. The hollow profile has a longitudinal end at which a cross-sectional configuration is deformed by swaging to reduce a dimension between the flanges. The following relations are established:&#x2267;() where tis a wall thickness of the web at the end, Tis a wall thickness of the web at a portion where the cross-sectional configuration is not deformed, and Ris an inside corner radius of a corner formed of the web and each flange at the portion.

Anti-collision component

An end of a stay material made of a tubular aluminum alloy extruded material is expanded by electromagnetic molding to form a flange for producing a bumper stay. The flange width is increased without cracking and a decrease in the thickness. A stay material having a circumferential wall undulating in a waveform pattern is used. A circumferential length L (one round length along waveform pattern) of the outer periphery wall along the circumferential direction of the stay material is longer than a circumferential length Lof a simple cylindrical circumferential wall having the same outer diameter (circumscribed circle) (L&#x3e;L). L&#x2212;Lis an excessive line length. Since the circumferential wall has the excessive line length, when the end of the circumferential wall is expanded to form the flange, the flange having a large diameter can be formed.

Energy absorbing member, method for producing same, and electromagnetic tube expansion method for rectangular cross-section member and polygon cross-section member

The present invention provides an automotive door enhanced with the absorption performance for the collision energy in the side collision. The automotive door constructed of an outer panel and an inner panel, comprising a door beam for a side collision therewithin, and provided with a glass ascending/descending space between the inner panel and the door beam for a side collision comprises a reinforcing panel disposed in a space between the outer panel and the glass ascending/descending space and joined with both of the outer panel and the door beam for a side collision.

Automotive door with enhanced side collision performance

The bumper stay includes a cylindrical shaft member fit in to a hole of a bumper reinforce, a cylindrical reinforcing member fit in to the outer periphery of the shaft member in the rear side of the bumper reinforce, and a mounting flange member fit in to the outer periphery of the shaft member in its rear end. The shaft member is enlarged by electromagnetic forming and is tightly adhered to the inner peripheral surface of the hole formed in the bumper reinforce, the inner peripheral surface of the reinforcing member, and the inner peripheral surface of the hole flange formed in the mounting flange member, thereby these are joined with each other. Thin aluminum alloy extruded material can be used for the shaft member. With such configuration, when a bumper stay is fit in to the holes formed in the front and rear walls of the bumper reinforce and the bumper stay is enlarged by electromagnetic forming to join with the bumper reinforce, joining of the both can be firmly performed and sufficient strength and energy absorption quantity can be secured.

Bumper structure

An automobile hood includes an outer panel and an inner panel. The inner panel includes a frame-shaped first inner member that joins with the outer panel and a second inner member disposed within the frame of the first inner member. The first inner member includes an outer edge portion, a first inner concave portion that forms an airspace portion, and an inner edge portion. The second inner member includes a second inner concave portion that has joint portions that join with the first inner member and form the airspace portions, panel joint portions that join with the outer panel at position on a center side of the panel, and an extension portion that extends into the first inner concave portion to join with the outer panel.

Automobile hood

An automotive engine hood is built by joining together respective edge parts of an outer panel and an inner panel such that spaces are formed between the outer and the inner panel. The inner panel has a plurality of ridge-like beads and ridge-like connecting beads connecting at least end parts of the beads on one of the opposite sides of the beads with respect to length of the beads. Each of the connecting beads has a top wall having a connecting surface continuous with the joint surfaces of the top walls of the beads, and a first inclined surface extending from the connecting surface to a bottom surface surrounded by the adjacent ones of the beads and the connecting beads. The automotive engine hood meets in equalities: 1.5 h&#x3c;L and L&#x3c;D, where L is distance between a boundary between the connecting surface and the first inclined surface, and a boundary between the first inclined surface and the bottom surface along the surface of the inner panel, h is height of the connecting surface from the bottom surface, and D is distance between one of the opposite ends of the bottom surface and a middle part of the bottom surface.

Automotive engine hood

A vehicle hood structure of the present invention has: a hood outer panel structuring a vehicle body outer side surface of a hood; a hood inner panel disposed along an entire region of a reverse surface of the hood outer panel, a cross-sectional configuration of the hood inner panel as seen from a vehicle longitudinal direction being a wavy configuration; and shelf portions formed along the vehicle longitudinal direction at side wall portions of the wavy cross-sectional configuration, wherein the cross-sectional configuration of a wavy configuration, of the hood inner panel, is formed along the vehicle longitudinal direction.

Growing community of inventors

Kobe, Japan

Hideki Ishitobi