Skeleton parts for automobiles

Abstract

The lower side (1) of the A-pillar, which is the frame member for automobiles according to the present invention, has a substantially T-shape in plan view, and intersects with each position corresponding to the transverse and longitudinal sides of the substantially T-shape. The cross-section is the outer plate (3) of the hat-shaped cross-sectional shape that is made of top plate portion (3a), vertical wall portion (3b), flange portion (3c); and the flange portion (3c) with the outer plate (3) The inner plate (5) which is joined to form a closed section between the outer plate (3) and the inner plate (5) and the outer plate (3) are made of metal. In the space between the plates (5), a plurality of resin-made reinforcement members (7) are respectively bonded to the inner surface (3d) of the outer plate (3) at one end and the inner surface (5a) of the inner plate (5) at the other end, The shape and arrangement of the reinforcing member (7) are set based on the analysis results of the shape optimization analysis method, and the shape of the reinforcing member (7) has a columnar shape or a columnar shape with raised ends.

Description

technical field [0001] The present invention relates to automobile frame parts (automotive frame parts) made of metal, and more particularly to an automobile frame part in which a resin-made reinforcing member (stiffening member) is provided in a space formed by an outer panel (outer panel) and an inner panel (inner panel). ) A-pillar lower side (pillar-lower) parts (parts) of the car frame parts. Background technique [0002] There are many techniques for reducing the weight of metal skeleton parts of automobiles. For example, thinning of ultra high-tensile steel sheets, material replacement from steel sheets to aluminum sheets, and the like are applied. Although the number of stamped parts (press formed parts) changing from steel sheets to aluminum is increasing year by year, due to the unavoidable rise in material (base metal sheet) costs, aluminum die casting methods are being used recently. A method of manufacturing a shaped part including a plurality of surrounding p...

AI Technical Summary

Problems solved by technology

[0008] In addition, in the case of reinforcement of an automobile skeleton member composed of an outer panel and an inner panel, in general, bulkhead members such as metal bulkheads are often incorporated for the purpose of connecting the outer panel and the inner panel. , but they are not lightweight because they are larger components and therefore have a certain weight

In addition, there is also a method of injecting foaming resin or the like into the space formed by the outer panel and the inner panel as a whole, but since the rigidity of the foaming resin itself is low, a large increase in rigidity cannot be expected just by filling it. However, since it is necessary to inject the foamed resin into the entire frame member, it is difficult to confirm the filling state, so there is a problem in repairability

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