Car body structure

Abstract

The invention provides a car body structure capable of facilitating the laying operation of wires and pipes passing through a body bolster, preventing the increase of components and complexity of underfloor structure, and reducing the cost of manufacturing the car body without deteriorating the rigidity and strength of the body bolster. Center sills (7, 7) are passed through a body bolster (5) in an underframe (1), the intersection of center sills (7, 7) and the body bolster referred to as a penetration portion (10), wherein the inner space of the penetration portion (10) is used to arrange wires and pipes (the paths thereof shown by reference number (11)). The interior of the penetration portion is a rectangular hollow space capable of allowing a sufficient amount of wires and pipes to be passed therethrough. Since there is no need to provide to the body bolster conventional penetration pipes dedicated for arranging wires and pipes, and thus no voids are formed in the body bolster, the deterioration of rigidity and strength of the body bolster caused by such segmentalization of the body bolster can be prevented and the manufacturing cost can be cut down without increasing components such as reinforcement members.

Description

technical field [0001] The present invention relates to a body structure having a corbel under a floor and a center sill intersecting the corbel, and wiring or piping laid under the floor. Background technique [0002] In recent years, aluminum materials with excellent extrudability, corrosion resistance, and weldability have been developed for use in railway vehicles. Along with this, in railroad vehicles, from the viewpoint of weight reduction and production rationalization, a large-sized body made of aluminum alloy is now becoming mainstream. In particular, a vehicle body structure is proposed in which a hollow extruded aluminum profile (hereinafter referred to as a hollow extruded profile) made of an aluminum alloy that is advantageous in strength is required to bear a large compressive load on the vehicle end to form a floor. As such a vehicle body structure, the vehicle body structure described in Non-Patent Document 1 is mentioned, for example. [0003] The body is ...

AI Technical Summary

Problems solved by technology

[0012] An object of the present invention is to provide a vehicle body structure in which various instruments and wiring or pipes connecting these instruments are arranged under the floor of the vehicle body, which does not cause a decrease in the rigidity of the bolster and is easy to penetrate. The wiring and piping of the bolster can be laid, and the problems of the existing body structure such as the increase in the number of parts, the complexity of the underfloor structure, and the increase in the cost of the body can be solved.

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