Abstract: A battery case for an electric vehicle includes a frame that has a polygonal frame shape in plan view, defines a through hole inside, and has R shapes provided on inner sides of corner parts of the polygonal frame shape. The case also includes a bathtub-shaped tray that includes a bottom wall located in the through hole, a surrounding wall that is provided around the bottom wall and defines an opening part on a side opposite to the bottom wall, and a flange that is provided at a distal end of the surrounding wall. The tray is pressure-welded to and integrated with the frame.

Abstract: A method for manufacturing an aluminum alloy extruded part includes: hot-extruding a 7000 series aluminum alloy by an extruder to form an extruded material; cutting the extruded material extruded from the extruder and moving forward to a predetermined length; applying plastic working to the cut extruded material in a state in which Vickers hardness of the extruded material is 50 to 70 (Hv); and applying aging treatment to the extruded material after the plastic working.

Abstract: A method for manufacturing a battery case for electric vehicle includes: preparing a frame, and a blank material formed in a flat plate shape; disposing the frame and the blank material to stack the blank material on the frame; and pressurizing the blank material to press the blank material against the frame, so as to mold the blank material into a bathtub shape and joining the blank material to the frame by press-fitting.

Abstract: An electric vehicle battery case includes: a frame formed in a rectangular frame shape when viewed in a vehicle vertical direction, the frame configured to define a space inside; a cross member disposed inside the frame to divide the space; and a tray having a bathtub shape, the tray configured to house a battery, the tray disposed at least partially in the space of the frame. The frame includes a pair of first framework members extending in a vehicle front-rear direction, and a pair of second framework members extending in a vehicle width direction. The cross member includes a first auxiliary member connecting the first framework members, and a second auxiliary member connecting the second framework members. The first framework members and the second framework members are mechanically joined to each other. The first auxiliary member and the second auxiliary member are mechanically joined.

Abstract: 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.

Abstract: An electric vehicle battery case includes: a frame formed in a polygonal frame shape when viewed from a vehicle vertical direction by joining a plurality of framework members, the frame configured to define a space inside; and a tray configured to house a battery, the tray having a bathtub shape disposed at least partially in the space of the frame. The plurality of framework members and include a first framework member that is made of an aluminum extruded material and has a first engagement portion at an end portion and a second framework member that is made of an aluminum extruded material and has a second engagement portion at an end portion. The first and second engagement portions have shapes to be engaged with each other. The first framework member and the second framework member are directly joined by engagement of the first and second engagement portions.

Abstract: An electric vehicle battery case includes: a frame including a plurality of framework members and joined through a joining member, the frame formed in a polygonal frame shape when viewed from a vehicle vertical direction, the frame configured to define a through hole inside; and a tray configured to house a battery, the tray disposed at least partially in the through hole of the frame. The plurality of framework members and include a first framework member and a second framework member which are made of an aluminum extruded material. In the frame, the first framework member and the joining member are joined by a mechanical joining method, and the second framework member and the joining member are joined by a mechanical joining method, which leads to the first framework member and the second framework member being indirectly joined through the joining member.

Abstract: A bumper reinforcement member is made of an aluminum alloy extruded shape material and having an outer flange and inner flange separated from each other by a first flange distance. A first outer connection portion is separated from a second outer connection portion by an outer web distance shorter than the first flange distance, and the first inner connection portion is separated from the second inner connection portion by an inner web distance shorter than the first flange distance. The first web and the second web are respectively curved so as to have protruding shapes facing each other at both the end portions.

Abstract: 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.

Abstract: 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.

Abstract: A battery case for an electric vehicle includes a frame that has a polygonal frame shape in plan view, defines a through hole inside, and has R shapes provided on inner sides of corner parts of the polygonal frame shape. The case also includes a bathtub-shaped tray that includes a bottom wall located in the through hole, a surrounding wall that is provided around the bottom wall and defines an opening part on a side opposite to the bottom wall, and a flange that is provided at a distal end of the surrounding wall. The tray is pressure-welded to and integrated with the frame.

Abstract: A method for manufacturing an aluminum alloy extruded part includes: hot-extruding a 7000 series aluminum alloy by an extruder to form an extruded material; cutting the extruded material extruded from the extruder and moving forward to a predetermined length; applying plastic working to the cut extruded material in a state in which Vickers hardness of the extruded material is 50 to 70 (Hv); and applying aging treatment to the extruded material after the plastic working.

Abstract: 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.

Abstract: An electric vehicle battery case 100 includes: a tray including a placement portion on which a battery is placed and having a groove formed in a bottom portion of the placement portion; a closing plate joined to the tray to close the groove and define a coolant flow path; and a top cover configured to seal the placement portion of the tray.

Abstract: A method for manufacturing a battery case for electric vehicle includes: preparing a frame, and a blank material formed in a flat plate shape; disposing the frame and the blank material to stack the blank material on the frame; and pressurizing the blank material to press the blank material against the frame, so as to mold the blank material into a bathtub shape and joining the blank material to the frame by press-fitting.

Abstract: In production of aluminum alloy members by a plastic working of a heat-treatable aluminum alloy extrusion, cracking during the plastic working is eliminated or minimized at low cost as compared with techniques including solution treatment or restoration treatment. An aluminum alloy production system includes an extruding press, a cutting device disposed downstream from the extruding press, and a conveyer and a plastic working machine each disposed in parallel with the extruding press. The extruding press hot-extrudes a heat-treatable aluminum alloy to give an extrusion. The cutting device cuts the extrusion to a predetermined length and isolates the extrusion from the extruding press. The conveyer conveys the extrusion to the plastic working machine, where the extrusion has been cut by the cutting device to a predetermined length. The plastic working machine imparts a plastic working to the extrusion conveyed by the conveyer to form the extrusion into an aluminum alloy part.

Abstract: A porous sound absorbing structure according to the present invention includes an outer material 2 having a smooth curved shape, an inner material 3 having an uneven shape with a perimeter thereof combined with a perimeter of the outer material 2 to form a hollow portion S between the outer material 2 and the inner material, and a reinforcing plate material 4 having a large number of through holes 5, the reinforcing plate material being attached to a surface of the inner material 3 on 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 4.

Abstract: 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.

Abstract: 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.

Abstract: A porous sound absorbing structure according to the present invention includes an outer material 2 having a smooth curved shape, an inner material 3 having an uneven shape with a perimeter thereof combined with a perimeter of the outer material 2 to form a hollow portion S between the outer material 2 and the inner material, and a reinforcing plate material 4 having a large number of through holes 5, the reinforcing plate material being attached to a surface of the inner material 3 on 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 4.