Frame structure and structure for supporting automotive power unit

Abstract

A high rigidity and lightweight frame structure. Using rosin molding the frame structure do not need high cost to mold easily. Generally triangular first and second longitudinal side portions are arranged in the lower half region of a longitudinal side member between the first and second flat members vertically spaced apart from each other and form projections and depressions longitudinally and alternately. Generally inverted triangular third and fourth longitudinal side portions are arranged in the upper half region between the first and second flat members and form projections and depressions longitudinally and alternately. The first longitudinal side portions are vertically opposed to the third longitudinal side portions such that the first and third longitudinal side portions form projections and depressions. The second longitudinal side portions are vertically opposed to the fourth longitudinal side portions such that the second and fourth longitudinal side portions form projections and depressions. The first through fourth longitudinal side portions are integrally coupled through associated rhombic connecting ribs located midway between the first and second flat members.

Description

technical field [0001] The present invention relates to a vehicle frame structure and an automobile power unit support structure using it. Background technique [0002] In patent documents 1 and 2, it is disclosed that in an automobile in which a drive shaft is used to connect a power unit composed of an automobile engine and a transmission system and a differential device, the above-mentioned power unit is connected on one end of a vehicle frame structure with a channel steel section, and the other The differential device is connected to one end, and the torsional rigidity and the bending rigidity of the vehicle body are improved when the vehicle body is running. [0003] (Patent Document 1) Japanese Patent Laid-Open Publication No. 11-139169 (page 3, FIG. 1, FIG. 2) [0004] (Patent Document 2) Japanese Patent Laid-Open Publication No. 2001-180294 (pages 3 and 4, FIGS. 1 to 3) [0005] (The problem to be solved by the invention) [0006] As mentioned above, it is an ind...

AI Technical Summary

Problems solved by technology

[0007] As an example of this countermeasure, it is conceivable to increase the thickness of the material of the frame structure itself to increase its own rigidity as described above, but this will lead to an increase in weight.

In addition, when the frame structure is a molded product made of resin, it is necessary to prevent the molded product from undercutting ( undercut), which naturally limits the shape and prevents the frame structure from being manufactured as an ideal structure with high rigidity

However, it is unrealistic to divide the frame structure into multiple parts and form them separately, and then combine them into a single frame structure, which increases the manufacturing man-hours and the cost of the molding model.

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