JPH02185855A - Vehicle body structure - Google Patents

Abstract

PURPOSE:To secure a sufficient resisting pressure structure as well as to achieve the promotion of lightweightness by forming an outside plate and a floor board being set up in the body longitudinal direction into each of extruded materials with a rib having its curvature in the body cross direction and formed in the both longitudinal direction. CONSTITUTION:A vehicle body structure has a slide plate 1 being set up in the outer side of a side structure, a roof plate 2 being set up in both top and outer sides of this roof plate, an underframe 3 being situated in a lower part of each side structure being set up at both sides, and a floor board 8 being set up in top of this underframe. In this case, an outside plate and the floor board 8 being set up in the body longitudinal direction of the side plate 1 and the roof plate 2 or the like is made up of each sectional circular extruded material having its curvature in the body cross direction, namely, formed into a projection at the car outside. This extruded material is made into such one that each rib 4 is solidly formed at the inner surface side, and thickness of the outside plate to be set up in a side window part should be set to be thicker than other parts.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicle structure, and particularly to a vehicle structure suitable for a railway vehicle that runs at high speed.

[Prior Art] Conventionally, as described in Utility Model Application Publication No. 51-151309, the body of a railway vehicle having a circular cross section was cut horizontally at the lower end of the circle to create a "continuous circular shape" from both side walls to the ceiling. Some have a curved surface, and the floor part is constructed from a flat underframe installed in the horizontal notch.In this example, when internal pressure or external pressure acts on both side walls and the ceiling, the circular cross-sectional structure By doing so, a tensile force is generated in the handling plane on the outer panel, and out-of-plane bending moment loads are avoided as much as possible.However, the underframe has a flat structure,
When the above load is applied, a large out-of-plane bending moment will occur in the underframe.

In order to reduce the stress against this load, the dimensions of the members become large, which is a disadvantageous structure for reducing the weight of the vehicle. Furthermore, when attaching outer panels such as side panels to bone members such as columns, it was necessary to use tools such as spot welding from both sides. In addition, since stress concentration occurs in the windows, it was necessary to attach reinforcing plates to each part.

[Problem to be Solved by the Invention 1] As the speed of vehicles increases, the difference in atmospheric pressure between the inside and outside of the vehicle body increases. For this reason, in the cross section of the vehicle body, a load outside the floor surface corresponding to the above-mentioned pressure difference acts on the floor portion having a flat structure, and a corresponding large stress is generated. In order to reduce this stress, there is a problem in that the dimensions of the floor become large, which hinders the reduction in weight of the vehicle body. In addition, the welding work during manufacture is work from both sides, which may increase the number of man-hours.

An object of the present invention is to provide a lightweight vehicle structure having a sufficient pressure-resistant structure.

[Means to solve the problem]

The above object is achieved by making the outer panel and the floor plate arranged in the longitudinal direction of the vehicle body an extruded material having a curvature in the width direction of the vehicle body and having ribs formed in the longitudinal direction of the vehicle body.

[Function 1] In order to obtain a car body with high pressure resistance, it is basic to provide each body structure with an arcuate portion. In the present invention, by providing a curvature in the cross section of each structure, the structure becomes approximately circular in shape. As a result, when internal or external pressure associated with high-speed running acts on the vehicle body, this load is mainly borne by the above-mentioned circular arc section. Due to the arc shape, a large in-plane load component in the circumferential direction is generated, and an out-of-plane bending moment load component can be reduced, which is advantageous in terms of strength.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle structure according to the present invention will be described below with reference to the drawings. On the right side of the figure, 1 is a side plate, which is installed on the outer surface of the side structure. 2 is a roof plate installed on the upper surface and outer surface of the roof structure. Reference numeral 3 denotes an underframe located at the lower part of the side structures arranged on both sides, and a floor plate 8 is installed on the upper surface of this frame. The side panels 1 and the roof panel 2, that is, the outer panels disposed in the longitudinal direction of the vehicle body, are extruded materials each having a cross-sectional shape of an arc having a curvature in the width direction of the vehicle body, that is, convex toward the outside of the vehicle. Further, the floor plate 8 is an extruded material having a cross-sectional shape having a curvature in the width direction of the vehicle, that is, a circular arc convex toward the outside of the vehicle. 4 is the side plate 1
．． These ribs are integrally formed on the inner surfaces of the roof plate 2 and the floor plate 8. Reference numeral 5 denotes a welded joint between each of the outer plates and the floor plate, and the groove is configured so that welding can be performed only from one side of each plate. In the case of the side panels 1 and the roof panel 2, grooves are formed so that welding can be performed from the inside of the vehicle where the ribs 4 are provided.

Next, 6 is a side window formed in the side structure, and 7 is a window corner of the side window 6. la, lb, lc, and ld are side plates constituting the side structure, and the side plate 1b on which the side window 6 is configured;
The thickness of the side plate 1c is thicker than that of the other side plates 1a and 1d. By cutting and removing portions of the side plates 1b, lc corresponding to the openings of the side windows 6, the side window peripheral areas and window corners 7 are constructed. In addition, the side plate lb
, lc is located at the middle portion of the side window 6 excluding the window corner 7. 9 is a side post.

In such a configuration, the side plate 1. The roof plate 2 and the floor plate 8 are made by joining a plurality of members in advance from the side where the ribs 4 are provided,
Thereafter, the structure is constructed by attaching it to various bone members such as the side columns 9.

In such a configuration, when pressure fluctuations inside and outside the vehicle that occur during high-speed running act on the structure, the out-of-plane bending moment can be reduced because the side panels 1, the roof panels 2, and the floor panels 8 are formed in an arc shape. can. therefore,
Side plate 1. The thickness of the roof plate 2 and floor plate 8 itself can be reduced,
Moreover, the frame to which each of the plate materials is attached can also be made thinner.

Further, the side plate 1. Since the ribs 4 are integrally formed on the roof plate 2 and the floor plate 8, they are advantageous in terms of strength even when the pressure fluctuations inside and outside the vehicle act on them. Further, the rib 4 is in a positional relationship perpendicular to each bone member such as the side pillar 9,
Also from this point of view, it is advantageous in terms of strength.

Furthermore, since the side plates 1b and lc are thicker than the others, and the periphery of the side window 6 is formed by cutting, it is possible to prevent a decrease in strength due to stress concentration, especially at the window corner 7.

As a result, there is no need to provide other reinforcing material at the window corner 7, and the number of parts and man-hours can be reduced.

Furthermore, since the side plates 1b and 1c are joined at the middle portion of the side window 6, it is advantageous in terms of strength. That is,
Since the middle part of the side window 6 is the part where the shear force due to the vertical load etc. acting on the structure is the smallest, the side plate 1b is attached to this part.
, 1c is advantageous in terms of strength.

[Advantageous Effects of the Invention 1] As explained above, according to the present invention, it is possible to provide a lightweight vehicle structure that has a sufficient pressure-resistant structure.

[Brief explanation of the drawing]

1 is a cross-sectional perspective view in the vehicle body width direction showing an embodiment of the vehicle structure according to the present invention, FIG. 2 is a sectional view of the side plate joint in FIG. 1, and FIG. 3 is an inner surface of the vehicle structure shown in FIG. 1. FIG. 4 is a sectional view of FIG. 3. 1---One side board, 2---One roof board, 3---
--Underframe, 4------Rib, 5---111 joint, 6------Side window, 7---Window corner, 8---
--One floor board procedure h Oral letter (spontaneous) Name of the invention Relationship to the case of a person who amends the vehicle body structure Patent applicant name (510) Representative of Hitachi, Ltd. Attorney Address: 5 Marunouchi-chome, Chiyoda-ku, Tokyo 100 No. 1: Number of claims increased due to internal amendments by Hitachi, Ltd. 1. Claims column of the specification subject to the amendment and Detailed explanation of the invention column Contents of the amendment As per the appendix /Yumi・r-E -
1.1. The claims of the specification are amended as follows. What is claimed is that the outer panels and floorboards constituting the vehicle body structure are extruded materials extending in the longitudinal direction of the vehicle body, and the extruded materials are integrally formed with ribs extending in the longitudinal direction of the vehicle body. vehicle structure. 2. The vehicle structure according to claim 1, wherein the outer panel and the floor panel are extruded members having an arcuate cross section in the width direction. 2. The vehicle structure according to claim 1, wherein the outer panel disposed at the side window portion is thicker than other portions. Further, in the vehicle structure according to claim 1, the joint portion of the outer panel arranged at the side window portion of the side structure forming the side surface of the vehicle body,
A vehicle body structure characterized in that a side window is arranged in the middle part excluding the window corner part. 2. The text from page 3, line 14 to page 4, line 9 of the specification is amended as follows. [Means for Solving the Problems] The present invention provides a structure in which the outer panel and the floor plate constituting the vehicle body structure are made of extruded materials extending in the longitudinal direction of the vehicle body, and the extruded materials are integrally formed with ribs extending in the longitudinal direction of the vehicle body. It is characterized by the fact that it has been [Function] The outer panel and floor panel are integrally constructed with ribs extending in the longitudinal direction of the vehicle body, and the ribs can improve the strength of the panel material itself, making it possible to achieve pressure resistance without the need for special reinforcing materials. can be secured. In addition, since the ribs themselves also serve as horizontal beams, the weight can be reduced by reducing the number of bone members. 3. Page 7, line 11 to line 15 of the specification shall be amended as follows. Writing it down is advantageous in terms of strength. In the above embodiment, an example was explained in which the outer panels such as the side panels and the roof panel and the floor panel were made of extruded materials with curvature, but the present invention is not limited to this, and An extruded material with integrated ribs can improve strength, thereby achieving improved pressure resistance and weight reduction. [Effects of the Invention] As described above, according to the present invention, it is possible to provide a lightweight vehicle structure that has a sufficient pressure-resistant structure. that's all

Claims (1)

[Scope of Claims] 1. In a vehicle structure consisting of an underframe structure, a side structure, a roof structure, and an end structure, the outer panel and the floor plate arranged in the longitudinal direction of the vehicle body have a curvature in the width direction of the vehicle body, and A vehicle body structure characterized by being made of an extruded material having ribs formed in the direction. 2. The vehicle structure according to claim 1, wherein the outer panel installed in the side window portion is thicker than other portions. 3. The vehicle structure according to claim 1, wherein the joint portion of the outer panel disposed at the side window portion of the side structure is disposed at an intermediate portion of the side window excluding the window corner.