Abstract: A vehicle rear body structure having a side sill structure of closed cross section extending substantially along the opposite sides of the floor panel and a transversely extending cross structure of closed cross section. The cross structure is connected with the floor panel and the side sill structure. The cross structure has a portion higher than the side sill structure and connected with the rear side panel of the vehicle body.

Abstract: The present invention relates to a polyester resin composition, and more particularly, to a polyester resin composition having excellent properties in flame retardance, mechanical property, heat resistance and moldability. Said polyester resin composition comprises 100 parts by weight of polyester resin (A), from 20 to 70 parts by weight of glass fibers (B), from 2 to 8 parts by weight of a crystallization-accelerating agent (C), from 10 to 25 parts by weight of flame retardant (D) and, as a auxiliary flame retardant (E), from 1 to 10 parts by weight of an antimony compound and from 2 to 12 parts by weight of a boric acid salt.

Abstract: An automobile rear body structure which comprises a hingedly supported rear door adapted to selectively close and open an access opening leading to a rear luggage compartment, a rear end panel partly defining the luggage compartment and extending widthwise of the body structure and a recess formed in the rear end of the floor panel at a location substantially intermediately of the width of the body structure for accommodating a wheel and tire in upright position. The rear end panel has a lower edge portion extending from a rear end of the floor panel in a direction generally perpendicular to the floor panel, and an upper edge portion bent so as to protrude in a direction towards the rear door while defining a rear lip region of the access opening. The frontwardly protruding upper edge portion of the rear end panel overhangs the wheel and tire located in the recess.