STACKED-JOINT STRUCTURE AND AUTOMOBILE FRAME COMPONENT

• Main Authors: FUJIMOTO HIRONORI, TATSUMI YUJIRO
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2020
• Subjects: BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; FORGE FURNACES; FORGING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HAMMERING; HEATING; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MOTOR VEHICLES; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; SOLDERING OR UNSOLDERING; THERMAL INSULATION IN GENERAL; TRAILERS; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

To provide a stacked-joint structure of stacked-joint members capable of suppressing breakage of a plate member starting from a hole formed in a non-fused joint when a stacked portion formed by stacking a plurality of plate members together is joined by non-fused joining means.SOLUTION: A stacked-joint structure according to one aspect of the present invention includes: a plurality of stacked plate members; and a plurality of joints arranged in a stacked portion of the plurality of stacked members, the joints being formed by mechanical joining means or friction-agitation point joining means. The plurality of joints have holes through which the mechanical joining means is inserted or holes formed by the friction-agitation point joining. Among the plurality of plate members, a main plate member having the largest product of the plate thickness and the tensile strength has, between the plurality of joints in the stacked portion, a soft portion with a hardness of 80% or less of the hardness of the plate member which includes main soft portions.SELECTED DRAWING: Figure 1 【課題】複数の板部材を重ね合せて形成された重ね部を、非溶融接合手段によって接合した場合に、非溶融接合部に形成された穴を起点に板部材が破断するのを抑制することが可能な重ね接合部材の重ね接合構造を提供する。【解決手段】本発明の一態様に係る重ね接合構造は、重ね合わせられた複数の板部材と、前記複数の板部材の重ね部に設けられた、機械的接合手段又は摩擦撹拌点接合手段によって構成された複数の接合部と、を備え、前記複数の接合部は、前記機械的接合手段が挿通される穴、又は摩擦撹拌点接合によって形成された穴を有し、前記複数の板部材のうち、板厚と引張強さとの積が最も大きい主板部材が、前記重ね部における前記複数の接合部の間に、前記主軟質部が設けられた前記板部材の硬さの８０％以下の硬さである軟質部を有する。【選択図】図１