Abstract: An automobile suspension structure includes: a subframe; a first link; and a second link, in which the subframe includes: a pair of side members; a pair of cross members; and a link attachment part, the link attachment part is arranged to be continuous with an end of the cross member, the link attachment part includes: a first link attachment part; and a second link attachment part, the link attachment part is joined to an upper surface and a lower surface of the side member in an automobile height direction and an outer surface of the side member in an automobile width direction, the first link attachment part and the second link attachment part are arranged with the side member sandwiched therebetween in the automobile height direction, the first link is attached to the first link attachment part, and the second link is attached to the second link attachment part.

Abstract: A structural part includes a part body and a cylindrical bush. The part body includes a through-hole and a cylindrical flange part provided in the periphery of the through-hole. The bush is inserted into the through-hole and the flange part. When seen in a cross section including a central axis of the bush, the flange part has a height difference between a first part that contacts the bush on one side in a direction perpendicular to the central axis and a second part that contacts the bush on the other side.

Abstract: As a burring processed member able to suppress the formation of fatigue cracks in a burring part, one having a structure satisfying the following relations (1) to (3) is disclosed: 3?Ra?100 . . . (1), 3.0<h . . . (2), 24+r?[TS/(40+0.28×Ra)]<h . . . (3), where, “Ra” is an arithmetic mean roughness (?m) of the burring end face, “h” is a height (mm) from the first surface to the burring end face, “r” is a radius of curvature (mm) of the curved wall part, and “TS” is the tensile strength (MPa) of the sheet-shaped part.

Abstract: An automobile suspension structure includes: a subframe; a first link; and a second link, in which the subframe includes: a pair of side members; a pair of cross members; and a link attachment part, the link attachment part is arranged to be continuous with an end of the cross member, the link attachment part includes: a first link attachment part; and a second link attachment part, the link attachment part is joined to an upper surface and a lower surface of the side member in an automobile height direction and an outer surface of the side member in an automobile width direction, the first link attachment part and the second link attachment part are arranged with the side member sandwiched therebetween in the automobile height direction, the first link is attached to the first link attachment part, and the second link is attached to the second link attachment part.

Abstract: This invention provides a joining structure including a structure joining two flanges together, with which adequate anti-noise performance and anti-vibration performance can be secured even when the sheet thickness is thin. A joining structure includes a first flange, a second flange, a joint portion formed by joining the first flange and the second flange in a state in which at least one of the flanges is collapsed to the side of the other of the flanges, and a contact portion where the first flange and second flange slidably contact at a position separated from the joint portion. A gap is formed between the first flange and the second flange by the first flange, the second flange being separated a position between the joint portion and the contact portion. Energy of vibrations and noise is attenuated by the sliding of a first contact portion and a second contact portion.

Abstract: This lower vehicle body structure includes: suspension components; a cross member including a pair of part cross members connected to the suspension components, and a reinforcing part coaxially connected between the pair of part cross members; a plurality of body mounts; and a plurality of connection members directly connecting each of the plurality of body mounts and the reinforcing part. A minimum sheet thickness of the reinforcing part at connection positions with respect to the pair of part cross members is 1.6 times or more an average sheet thickness at connection ends of the pair of part cross members with respect to the reinforcing part.

Abstract: The present disclosure provides a structural member comprising an edge portion T1 and an edge portion T2 opposing the edge portion T1 in plan view in height direction (Z axis direction); when an axis direction connecting the edge portion T1 and the edge portion T2 is regarded as an X axis direction, the structural member includes, along the X axis direction, a region A including the edge portion T1, and a region B located on the edge portion T2 side than the region A and including the edge portion T2; in a cross-section perpendicular to the X axis direction, the region A includes a closed cross-section portion A whose outer rim shape is one closed cross-section A; and the region B includes a closed cross-section portion B satisfying a predetermined (i) or (ii).

Abstract: In an automobile hood, sufficient panel rigidity and dent resistance are secured while achieving weight reduction. Automobile hood 1 has a panel 2, a reinforcing member 3, and a joint 4 that joins the panel 2 and the reinforcing member 3. The reinforcing member 3 includes a structure formed from a plurality of units 7 having a hexagonal annular shape disposed in a close-packed arrangement. Unit 7 has a floor 11, inclined wall 12 and top plate 13. The floor 11 is adjacent to the panel 2. Top plate 13 and panel 2 are separated from each other. The inclined wall 12 is arranged between the floor 11 and the top plate 13. A hexagonal annular first ridge line 31 of the unit 7 is located between the inclined wall 12 and the floor 11. A length L1 of one side of the first ridge line 31 is 40-75 mm.

Abstract: In an automobile hood, sufficient panel rigidity and dent resistance of a panel are secured while achieving weight reduction. An automobile hood having panel, reinforcing member and joint that joins the panel and the reinforcing member such that the reinforcing member includes a structure formed from a plurality of units having hexagonal annular shape disposed in a close-packed arrangement. Floor of the unit has an annular end part. All of annular end part is located between first circle and second circle wherein first circle is inscribed within a first ridge line overlapping with an outer end part of the floor. Second circle is concentric with first circle and has a radius that is 60% of a radius of the first circle. Width of upper face of floor is 2 mm or more over the entire area of the annular end part in the circumferential direction of the annular end part.

Abstract: As a burring processed member able to suppress the formation of fatigue cracks in a burring part, one having a structure satisfying the following relations (1) to (3) is disclosed: 3?Ra?100 . . . (1), 3.0<h . . . (2), 24+r?[TS/(40+0.28×Ra)]<h . . . (3), where, “Ra” is an arithmetic mean roughness (?m) of the burring end face, “h” is a height (mm) from the first surface to the burring end face, “r” is a radius of curvature (mm) of the curved wall part, and “TS” is the tensile strength (MPa) of the sheet-shaped part.

Abstract: In an automobile inner panel and an automobile panel that includes the automobile inner panel, panel rigidity of the panel is secured while achieving a weight reduction. An automobile inner panel 2 has a plurality of sub-units 10 that each include a flange 11, an inclined wall 12 continuous with the flange 11, and a bottom portion 13 continuous with inclined wall 12 and separated from the flange 11. The bottom portions 13 and 13 of the sub-units 10 and 10 which are adjacent to each other are butted against each other and are directly continuous with each other. A maximum value of a distance D1 between two of the flanges 11 and 11 of two of the sub-units 10 and 10 in which the bottom portions 13 are arranged separated from each other and which are adjacent to each other is 250 mm or less.

Abstract: A structural member includes a top sheet portion which has a first edge portion and a second edge portion facing the first edge portion, a wall portion which extends from the second edge portion in a direction intersecting the top sheet portion, and a closed cross-sectional portion which is provided in the first edge portion, in which the first edge portion is curved toward an inside of the top sheet portion in a plan view with respect to the top sheet portion, and when a distance from the first edge portion to the second edge portion of the structural member is referred to as a structural member width, the closed cross-sectional portion forms a closed cross section on a vertical cut plane of the structural member along a direction of the structural member width, the vertical cut plane of the structural member along the direction of the structural member width has an open cross section, and a shape of the vertical cut plane of the structural member including the closed cross-sectional portion is asymmetric wi

Abstract: This invention provides a joining structure including a structure joining two flanges together, with which adequate anti-noise performance and anti-vibration performance can be secured even when the sheet thickness is thin. A joining structure includes a first flange, a second flange, a joint portion formed by joining the first flange and the second flange in a state in which at least one of the flanges is collapsed to the side of the other of the flanges, and a contact portion where the first flange and second flange slidably contact at a position separated from the joint portion. A gap is formed between the first flange and the second flange by the first flange, the second flange being separated a position between the joint portion and the contact portion. Energy of vibrations and noise is attenuated by the sliding of a first contact portion and a second contact portion.

Abstract: This lower vehicle body structure includes: suspension components; a cross member including a pair of part cross members connected to the suspension components, and a reinforcing part coaxially connected between the pair of part cross members; a plurality of body mounts; and a plurality of connection members directly connecting each of the plurality of body mounts and the reinforcing part. A minimum sheet thickness of the reinforcing part at connection positions with respect to the pair of part cross members is 1.6 times or more an average sheet thickness at connection ends of the pair of part cross members with respect to the reinforcing part.

Abstract: In an automobile inner panel and an automobile panel that includes the automobile inner panel, panel rigidity of the panel is secured while achieving a weight reduction. An automobile inner panel 2 has a plurality of sub-units 10 that each include a flange 11, an inclined wall 12 continuous with the flange 11, and a bottom portion 13 continuous with inclined wall 12 and separated from the flange 11. The bottom portions 13 and 13 of the sub-units 10 and 10 which are adjacent to each other are butted against each other and are directly continuous with each other. A maximum value of a distance D1 between two of the flanges 11 and 11 of two of the sub-units 10 and 10 in which the bottom portions 13 are arranged separated from each other and which are adjacent to each other is 250 mm or less.

Abstract: In an automobile hood, sufficient panel rigidity and dent resistance of a panel are secured while achieving weight reduction. An automobile hood having panel, reinforcing member and joint that joins the panel and the reinforcing member such that the reinforcing member includes a structure formed from a plurality of units having hexagonal annular shape disposed in a close-packed arrangement. Floor of the unit has an annular end part. All of annular end part is located between first circle and second circle wherein first circle is inscribed within a first ridge line overlapping with an outer end part of the floor. Second circle is concentric with first circle and has a radius that is 60% of a radius of the first circle. Width of upper face of floor is 2 mm or more over the entire area of the annular end part in the circumferential direction of the annular end part.

Abstract: In an automobile hood, sufficient panel rigidity and dent resistance are secured while achieving weight reduction. Automobile hood 1 has a panel 2, a reinforcing member 3, and a joint 4 that joins the panel 2 and the reinforcing member 3. The reinforcing member 3 includes a structure formed from a plurality of units 7 having a hexagonal annular shape disposed in a close-packed arrangement. Unit 7 has a floor 11, inclined wall 12 and top plate 13. The floor 11 is adjacent to the panel 2. Top plate 13 and panel 2 are separated from each other. The inclined wall 12 is arranged between the floor 11 and the top plate 13. A hexagonal annular first ridge line 31 of the unit 7 is located between the inclined wall 12 and the floor 11. A length L1 of one side of the first ridge line 31 is 40-75 mm.

Abstract: A structural member includes a top sheet portion which has a first edge portion and a second edge portion facing the first edge portion, a wall portion which extends from the second edge portion in a direction intersecting the top sheet portion, and a closed cross-sectional portion which is provided in the first edge portion, in which the first edge portion is curved toward an inside of the top sheet portion in a plan view with respect to the top sheet portion, and when a distance from the first edge portion to the second edge portion of the structural member is referred to as a structural member width, the closed cross-sectional portion forms a closed cross section on a vertical cut plane of the structural member along a direction of the structural member width, the vertical cut plane of the structural member along the direction of the structural member width has an open cross section, and a shape of the vertical cut plane of the structural member including the closed cross-sectional portion is asymmetric wi

Abstract: The panel-like formed product includes a polygonal top board, two or more vertical walls, and a flange. The vertical walls extend from two or more sides of the top board, and include at least two adjacent vertical walls extending from at least two adjacent sides of the top board. The top board includes a frame portion, and a concave portion which is located at an inner side of the frame portion. The two or more adjacent vertical walls include a first vertical wall section, a stair, and a second vertical wall section. The stair connects to a lower end of the first vertical wall section. The second vertical wall section connects to an outer edge of the stair. The flange connects to a lower end of the second vertical wall section.

Abstract: A deformation mode analysis method for a member of a structure is a method of analyzing a deformation mode of each member by performing structural analysis or a structural test on a structure including a single member or a plurality of members. In this method, the deformation mode of the structure is analyzed by separating the structure into a plurality of regions and calculating deformations for every separated region.