JP2000272512A - Body structure for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and inexpensively manufacture a body structure for a rolling stock using a hollow plate, compared with the prior art. SOLUTION: In this body structure, plates 10 having skins in their insides and outsides and including hollow parts between them are arranged to direct an extending direction of the hollow part to a longitudunal direction of a body 1, so as to constitute a roof 2, sides 3 and an underframe 5, and the roof 2, the sides 3 and the the underframe 5 are constituted by connecting the plates 10 (10A.10B) having a length shorter than the whole length of the body 1 in the longitudinal direction of the body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure (body structure) for a vehicle such as a railway vehicle or a bus.

[0002]

2. Description of the Related Art In recent years, a structure of a railway vehicle or the like is sometimes configured as a monocoque structure using a plate having a hollow cross section (hollow plate). Using a high-rigidity plate with skins (inner and outer skins) inside and outside the hollow part, without using a bone member called a frame, the side of the vehicle (side wall)
And the roof or underframe (floor).

[0003] Unlike a so-called frame system comprising a bone and an outer skin, a monocoque structure receives external force by the entire structure. There is an advantage that the number of components can be reduced as compared with the frame method, so that it is possible to assemble in a short period of time. When a plate having skins inside and outside is used as described above, there is also an advantage that a sound insulating effect and a heat insulating effect are high.

The above-mentioned hollow plate having a skin inside and outside (for example, a double-skin truss structure shown in FIG. 2) is generally manufactured by extrusion using aluminum or the like. By such processing, thickness about 50mm, width about 500mm, length 2
A hollow plate of about 5 m is manufactured, and its length direction (the direction in which the hollow portion extends; the extrusion direction at the time of processing) is oriented in the front-rear direction (length direction and traveling direction) of the vehicle, and a plurality of adjacent plates are aligned. By joining in the width direction, a side of a vehicle, a roof or an underframe is formed. The length of about 25 m is determined so that the board can be used as it is to cover the entire length of the vehicle.

[0005]

When a vehicle structure is constructed as a monocoque structure using a plate as described above, it is advantageous in terms of the number of required members, assembling time, sound insulation and heat insulation. It is not always advantageous in terms of cost. This is because a plate having skins inside and outside a hollow portion cannot be easily manufactured by extruding aluminum or the like, as well as by integrating the skins or the like by welding. In particular, for long plates exceeding 15 m, considerable costs are incurred due to the difficulty of production.

In addition, such a long plate is not easy to handle before assembling as a vehicle structure. The rigidity is low because it is quite long compared to the thickness and width, so it is necessary to take great care during transportation and support so that it will not be deformed (bent or twisted) before assembly. . In order to handle without deformation, it is troublesome and costly.

[0007] The claimed invention is intended to simplify the manufacturing of the above-described vehicle structure using the hollow plate as compared with the conventional one and to reduce the cost.

[0008]

According to a first aspect of the present invention, there is provided a vehicle structure including a plate having inner and outer skins and including a hollow portion between the plates (that is, the hollow plate). In a vehicle structure in which the side (side wall), roof or underframe (floor) is configured by being arranged in the front-rear direction, the above-mentioned plate having a length less than the entire length of the vehicle (for one vehicle) is used. The vehicle is connected in the front-rear direction of the vehicle to constitute the side (that is, the hollow plate as described above), the roof, or the underframe.

In this vehicle structure, since the side of the vehicle, the roof, and the underframe are formed by connecting hollow plates in the front-rear direction of the vehicle, the plate before the structure is used as the plate before the structure. There is no need to manufacture long products. In the current state of the art, such hollow plates used in vehicle structures are typically manufactured as extruded aluminum or aluminum alloy profiles, but the required length of the plates must be reduced. When this is done, the extrusion process itself for producing the same becomes easy and can be performed at low cost. As for the extrusion process, if the product length is short, it is easy to maintain the temperature closely related to the ductility and deformation resistance of the material, and the friction and lubrication state between the material and the die during extrusion is constant The difficulty of processing is greatly eased because it is easy to maintain.

When a plate shorter than the entire length of the vehicle is used, it is necessary to connect the plate in the front-rear direction of the vehicle. However, as described above, it is sufficient to extrude the short plate.
An advantage can be obtained that exceeds the labor and cost required for the connection. Depending on the position and number of connections, the manufacturing length of the plate can be considerably shortened, and depending on the length, a significant cost reduction of the plate can be realized, and a hollow material for the structure using a material that was previously inapplicable This is because there is a possibility that a plate can be manufactured. When the length is shortened, the rigidity of the plate as a material increases, so that there is also an advantage that inconvenient deformation is less likely to occur on the plate without extra labor and cost for transportation and support before assembly. . In addition, the mechanical strength of the structure can be sufficiently satisfied by appropriately setting the connection form, the connection position, and the like.

[0011] The vehicle structure according to claim 2 is preferably
The connection of the plates in the front-rear direction of the vehicle is performed by welding along a line connecting a plurality of locations having different positions in the same direction in a comb tooth shape at one location near the middle of the vehicle in the same direction. It is characterized by.

When the above-mentioned plates to be assembled are connected in the front-rear direction in this way, as described above, a great merit exceeding the load required for the connection can be obtained. The first reason is that the plates are connected near the middle of the vehicle,
The point is that it is sufficient to manufacture only a plate having a length of about half the total length of the vehicle as a material. Assuming that a hollow plate is obtained as an extruded shape by extrusion of aluminum or the like, a plate having a length of about half of the entire length of the vehicle (that is, a length of about several tens of meters) is more than a plate having a length of about 25 m that covers the entire length of the vehicle. It is much easier to manufacture and the manufacturing costs are greatly reduced. If such a short plate is used, there is a possibility that the plate can be manufactured by extrusion using a metal other than aluminum. The second reason is that the connection of the plates is performed at only one location near the middle of the vehicle. This is because if connection is performed at only one place, the amount of work such as welding and finishing required for connection can be minimized, and an increase in manufacturing time and cost can be suppressed. The third reason is that the mechanical strength of the structure is prevented from being reduced due to the connection. This is because the plates are connected by welding along a line that connects a plurality of portions having different positions in the front-rear direction in a comb-teeth shape. If welding along a single straight line perpendicular to the front-rear direction of the vehicle, stress generated by external force etc. may concentrate on that straight line, but as described above, welding along a comb-shaped line If so, the concentration of stress and the growth of small cracks can be effectively prevented.

In the vehicle structure according to the third aspect, the connection of the plate in the front-rear direction of the vehicle is performed, for example, by butt-welding the inner and outer skins as shown in FIG. 5 (a) or (b). Or by welding the inner and outer skins via a plate-like joint.

When the skins are welded in this manner, the above plates are firmly connected to each other, and sufficient mechanical strength can be imparted to the structure. Since a joint is not used, or even if it is used, only a plate-shaped joint is used, the weight of the structure hardly increases due to the connection. In addition, by appropriately selecting the form of welding, the method of implementation, and the position of use of the joint, it is possible to connect easily and at low cost without deteriorating the appearance of the vehicle.

According to a fourth aspect of the present invention, the connection of the plates in the front-rear direction of the vehicle is performed by welding, particularly through a joint. A flange portion in contact with the inner surface of the outer skin (inward surface, that is, the surface on the inside of the vehicle) of the plate before and after the connecting portion, and an inner surface (inward surface) or an outer surface of the inner skin (30, 40, 50); A flange portion in contact with the facing surface, that is, the outer surface of the vehicle, and a web portion connecting between the flange portions, and extending in the width or height direction of the vehicle (that is, a direction orthogonal to the front-rear direction). It is characterized by using a metal material (a metal material whose cross-sectional schematic shape is H-shaped, I-shaped, C-shaped (groove-shaped) or the like).

If the plates are connected to each other by welding using such a joint, the connection can be easily performed with a small amount of work, and the vehicle structure can be constructed at low cost. The reason is as follows. First, in connecting plates having the same cross-sectional shape, welding through a joint can be performed more easily than welding without a joint. The thickness of each skin inside and outside of the plate used for the vehicle body is 5 mm or less, but it is effective to use a joint to weld such thin members so as to connect them in the same plane. It is. If each member is directly butt-welded without using a joint or backing metal,
Since general arc welding is not easy, it becomes necessary to use special welding means. Second, the use of such a joint facilitates positioning of the front and rear plates at the joint. Unlike general butt welding, in which it is difficult to hold both plates so that they do not shift from each other, when a joint is used, the joint is welded to one plate from the point of welding. This is because the other plate can be positioned using the joint (that is, by attaching the other plate to the joint). If the positioning between the plates is easy, the plates can be connected to each other in a correct positional relationship without any trouble. Third, joints are easily available. As described above, a profile having two flange portions and a web portion between the two flange portions can be easily manufactured without using a large cost, whether using a commercial product or manufacturing by extrusion. Because it can be obtained.

It is also preferable to connect the hollow plates by using the joints as described above from the viewpoint of the appearance of the vehicle. One of the flange portions of the joint is in contact with the inward surface of the outer skin of the plate before and after the connecting portion, and is in contact with the outward surface of the skin to cause a step on the outward surface. It is not. The outward surface of the outer skin is exposed to the outside of the vehicle and is directly connected to the exterior of the vehicle.Therefore, there is no step on that surface. It has great significance in that it does not impair.

[0018]

1 to 3 show an embodiment of the present invention. FIG. 1 is an overall view of a cabin vehicle 1,
(A) is a plan view, (b) is a side view, and (c)
FIG. 2 is a plan view showing the underframes 5 and 6 and is a view as seen from an arrow II in FIG. FIG. 2 is a cross-sectional view of the vehicle 1. The left half of FIG. 2 (a) is a cross-sectional view taken along line LL in FIG. 1 (a) (in the middle of the vehicle), and the right half is FIG. )
2 (b) is a detailed view of a portion b in FIG. 2 (a), showing a detail of the hollow plate 10 in FIG. 2 (a). . And FIG.
Is a cross-sectional view taken along the line III-III in each drawing of FIG.
It is a longitudinal cross-sectional view which shows the detail about 10 C of connection parts of 0.

As shown in FIGS. 1 and 2, a vehicle 1, which is a passenger vehicle of a Shinkansen, has a roof 2, a side (side wall) 3, and an underframe (floor).
A body such as 5 and 6 constitutes a vehicle body.
As shown in FIG. 1 (b), a window 4A and an entrance 4
A plurality of wheels B are provided, and wheels 8, supporting devices (not shown), driving devices (the same), and the like are arranged below the underframes 5 and 6. Since the vehicle 1 is a cabin vehicle, a plurality of seats (not shown) and the like are provided inside the structure of the vehicle 1.

In this cabin vehicle 1, as shown in FIG. 2, a structure such as a roof 2, a side 3, and underframes 5 and 6 is formed by a double skin
It has a monocoque structure using a hollow plate 10 called a truss structure (including various shapes and sizes of the plate 10). These plates 10 are extruded shapes formed by extruding an aluminum alloy, and have a cross-sectional shape resembling a truss structure including a triangle as shown in the figure, and changing the shape in the extrusion direction (length). Direction,
That is, it is continuous in the extending direction of the hollow part). The direction is directed to the longitudinal direction (front-back direction) of the vehicle 1.

The structure of the plate 10 will be described by taking the side 3 shown in FIG. 2 (b) as an example.
An outer skin (outer skin) 11, an inner skin (inner skin) 12, and a diagonal member 13 are integrated, and an intermediate hollow portion is partitioned into a plurality of triangular prism-shaped small spaces 14. Although the dimensions of the plate 10 in the cross section are slightly different depending on the used portion, the thickness (from the outward surface of the outer skin 11 to the inner
2, the dimension up to the inward surface) is 50 to 100 mm, and the width is 4
It is 00 to 600 mm. Outer skin 11, endothelium 12, diagonal 1
3 has a thickness of 2 to 4 mm. The joining of the plates 10 in the width direction of the plates 10, that is, in the direction along the periphery of the vehicle 1 (the width or height direction of the vehicle 1) is performed by joining protrusions at each end of each plate 10 in the width direction. Pairs 10x and 10y (projections 10y
The protrusions 10x can be inserted between them) are alternately formed, and they are inserted and then welded. Regarding the roof 2 and the underframes 5 and 6, the schematic configuration of the plate 10 and the joining in the width direction are shown in FIG.
Is the same as

In this cabin vehicle 1, FIGS. 1 (a) to 1 (c)
Each of the roof 2, the side 3, and the plate 10 as the underframe 5 is a plate 1 having a length less than the entire length of one vehicle 1.
OA and 10B are connected by welding in the longitudinal direction of the vehicle 1. Except for a part of the side 3 where the plate 10 is divided by the window 4A and the entrance / exit 4B, the connecting portion 10C between the plates 10A and 10B is the same as that of the vehicle 1 on any of the roof 2, the side 3 and the underframe 5. It is provided at one location near the middle in the longitudinal direction. That is, each book of the plate 10 extending over the entire length of the vehicle 1 is connected to the front and rear at one connection portion 10C, thereby forming one continuous body. The connecting portions 10C are provided at a plurality of different positions in the longitudinal direction of the vehicle 1 (three positions for the roof 2 and the underframe 5 as shown in FIG.
At two locations), so that the connecting portion 10C is not continuous with the adjacent plate 10 in the width direction. Therefore, near the middle of the vehicle 1, there is a line for welding between the plates 10 so as to connect a plurality of places at different positions in the longitudinal direction of the vehicle 1 in a zigzag manner.

When the respective plates 10 of the roof 2, the side 3 and the underframe 5 are connected as described above, it is not necessary to use a plate 10 having a length of about 25 m over the entire length of the vehicle 1 as a material. The structure can be constituted by using a plate 10 having a length of about half as a material. When the double-skin truss structure plate 10 having a hollow portion is manufactured by extrusion of an aluminum alloy, if the length exceeds 15 m, the manufacturing cost is significantly increased. If it can be shortened, the manufacturing cost of the plate 10 and eventually the vehicle 1 can be greatly reduced. At the same time, labor and cost required for transporting and supporting the plate 10 before assembling as a structure can be reduced, and a storage place can be easily secured. Board 1
Since there is one connecting portion C for each of 0,
The labor required for connection and the increase in cost are small, and do not exceed the above-mentioned cost reduction in extrusion processing. In addition, since the connection between the respective plates 10 is made by welding that connects a plurality of portions in a comb shape, the mechanical strength of the structure accompanying the connection hardly decreases.

The plates 10 at the connecting portion 10C (plate 1)
Between 0A and 10B. The connection in the length direction is performed by welding via the joint 20 shown in FIG. The joint 20 has flanges 21 and 22 at both ends (upper and lower sides in the figure), and a generally H-shaped (flange 2)
1 and 22 have unequal widths and are nearly T-shaped in cross section, and are equal to the width of the plate 10 in a direction perpendicular to the length direction of the plate 10 (a direction perpendicular to the plane of FIG. 3). It is a profile that has been extended by the length. In this example, the joint 20 having such a cross section is used.
Is manufactured by extruding an aluminum alloy in the same manner as the plate 10, and cut into an appropriate length for use. This joint 2
0, the flange 21 is formed by the edge portions 21a on both sides and the intermediate portion 2
1b, a step is provided between the intermediate portions 21b when the respective edges 21a are brought into contact with the inward surfaces of the outer cover 11 of the plates 10A and 10B before and after the connecting portion C.
Is located on an extension of the outward surface of the outer skin 11, and forms a rectangular welding groove between the intermediate portion 21b and the end of each outer skin 11. One of the flanges 22 has a flat shape, and when the position of the flange 21 is determined as described above, the outer surface of the flange 22 is in contact with the outward surface (the surface facing the outside of the vehicle) of each inner skin 12 of the plates 10A and 10B. And an I-shaped groove between the inner skin 12 and the flange 22 serve as a backing metal for the welding. Flange 2 at the above groove
When welding 24 is performed between the outer shell 11 and each outer skin 11 (black portions indicate welding beads; the same applies to the following description), and welding 25 is performed between the flange 22 and the inner skin 12 at the I-shaped groove, The connection portion 10C is firmly connected between 10A and 10B. In addition, the code | symbol 19 in a figure is board 10A *.
This is a space formed by cutting out the diagonal members 13 and the like in order to arrange the joint 20 between 10B.

Since the thickness of the outer skin 11 and the inner skin 12 is several mm, it is advantageous to connect the plates 10A and 10B with the welds 24 and 25 formed at the respective grooves as described above using the joint 20. It is. It is not easy to connect such thin plates by general butt welding,
This is because the connection can be performed by ordinary arc welding when the above-described groove is formed. Also,
After the joint 20 is welded to one of the plates 10A and 10B, the other plate (the plate 10A or 10B) can be positioned by bringing the joint into contact with a part of the joint 20, and the plate is placed at an appropriate position. This is because welding can be performed. Fitting 20
Of the plates 10A and 10B as shown in FIG.
Because it is in contact with the inward surface of the outer skin 11 and is located on an extension of the outward surface, after performing the welding 24, it is only necessary to perform a simple finish of flattening the outer surface of the bead, and the vehicle 1 The reason that the above-described welding using the joint 20 is preferable is that the surface can be smoothed and its appearance can be improved.

The connection between the plates 10A and 10B can be made by a connecting portion 10C as shown in FIG. 5A or 5B, for example. That is, the connection between the outer skins 11 exposed on the surface of the vehicle 1 is performed by the I-shaped butt welding 64 and 74, and the connection between the inner skins 12 is performed by the I
Fillet welding 6 using shape butt welding 75 (FIG. 5 (b)) or plate joint 60 on the inward surface (the surface facing the interior of the vehicle)
5 (FIG. 5A). However, since the thickness of the outer skin 11 and the inner skin 12 is as thin as several mm, it is necessary to perform seam welding using a foil or the like in order to perform the I-shaped butt welding 64, 74, and 75. A space 19 in the figure is a cutout of the diagonal member 13 for inserting an electrode of a seam welding machine (not shown).

The joint 2C shown in FIG.
It is also possible to use the joints 30, 40, and 50 of FIG. Both joints have plates 10 before and after the connecting portion 10C.
A · 10B has a flange portion in contact with the inward surface of the outer skin 11, a flange portion in contact with the outward or inward surface of the inner skin 12, and a web portion connecting between the flange portions, and has a cross section. Is roughly H-type or I-type.
It is made of a T-shaped or C-shaped (co-shaped) shape. Each profile extends in a direction orthogonal to the length direction of the plate 10 (that is, the direction of the width or height of the vehicle 1), and is also manufactured by extrusion of an aluminum alloy.

The joint 30 shown in FIG. 4A has an H-shaped cross section in which flanges 31 and 32 at both ends are formed symmetrically with respect to the web 33.
As in 1, a step is formed on the outer surface of each of the flanges 31 and 32. That is, the step on the flange 31 is
1 is formed so that the edge portion is in contact with the inward surface and the intermediate portion is located on the extension surface of the outward surface of the outer cover 11, and the step on the flange 31 is also provided symmetrically therewith. When the joints 30 are arranged as shown in the figure by bringing the flanges 31 and 32 into contact with the inward surface of the outer skin 11 and the outward surface of the inner skin 12, as shown in FIG. Re-shaped welding groove is formed, and each groove is welded with 34 ・
By applying 35, the connection between the plates 10A and 10B can be performed.

The joint 40 shown in FIG. 4 (b) is a C-shaped (U-shaped) cross section, and also has flanges 41 at both ends.
It has a cross-sectional shape in which 42 is connected by a web 43. When the joints 40 are arranged with the flanges 41 and 42 in contact with the inward surface of the outer skin 11 and the outward surface of the inner skin 12, each of the flanges 41 and 42 is positioned between the outer skin 11 and the inner skin 12.
Backing metal for I-shaped welds 44 and 45 between them.

The joint 50 shown in FIG. 4C is made of an asymmetrical H-shaped section whose cross section is close to T-shaped, and also comprises flanges 51 and 52 at both ends and a web 53 therebetween. The flange 51 is brought into contact with the inward surface of the outer skin 11, and the flange 52 is brought into contact with the inward surface of the inner skin 12 (the surface facing inside the vehicle). Then, an I-shaped welding 54 is performed between the ends of the outer skin 11 with the flange 51 as a backing metal, and a fillet weld 5 is formed between the edge of the flange 52 and the inward surface of the inner skin 12.
By performing step 5, the plates 10A and 10B are connected.

Although the embodiments have been described above, it goes without saying that the present invention is not limited to these embodiments. For example, the invention can be practiced even if the hollow plate is not of the illustrated double-skin truss structure having a triangular small space in the cross section. In addition, any part of the roof 2, the side 3, and the underframe 5, but not all of them, may be configured as a hollow plate connecting structure according to the invention as described above. others,
Various forms of implementation are possible, such as implementing the above-described structure in a vehicle other than a railway vehicle such as a bus.

[0032]

According to the vehicle structure described in the first aspect, it is not necessary to use a hollow plate having a length equal to or more than the entire length of the vehicle as a constituent material. Therefore, the hollow plate can be easily manufactured at a low cost by extrusion or the like and used as a material of the structure. There is also a possibility that the hollow plate can be manufactured using a material that was not possible before. It can be transported at low cost.

According to the vehicle structure of the second aspect, the above advantages become remarkable, and particularly great advantages are brought. It is sufficient to manufacture only a plate that is about half the length of the vehicle as a material, that the connection work of the plate is performed only in one place of one vehicle, mechanical strength of the structure The reason is that there is almost no decrease.

According to the vehicle structure of the third aspect, it is possible to provide a sufficient mechanical strength to the structure by firmly connecting the plates with almost no increase in weight.

According to the vehicle structure of the fourth aspect, since the plates are connected to each other by welding using a specific joint, simple connection can be performed with a small amount of work, and the cost of the vehicle structure is reduced. This is because the connection of the thin plates by welding is easy through a joint, the use of the joint enables the plates to be correctly positioned without any trouble, and the plates to be connected to each other. It is an advantage based on easy availability at cost. Since there is no step on the outer surface of the vehicle, there is also an advantage that the appearance of the vehicle can be improved while simplifying the finish after welding.

[Brief description of the drawings]

FIG. 1 is an overall view of a cabin vehicle 1, showing an embodiment of the present invention. 1A is a plan view, FIG. 1B is a side view, and FIG. 1C is underframes 5 and 6.
FIG. 2 is a plan view showing the same, and is a view as seen in the direction of the arrow II in FIG.

FIG. 2 is a cross-sectional view of the vehicle 1 of FIG.
The left half of (a) is a sectional view taken along the line LL in FIG. 1 (a) (near the middle of the vehicle), and the right half is a sectional view taken along the line RR in FIG. In). FIG. 2B is a detailed view of a portion b in FIG. 2A and is a cross-sectional view showing details of the hollow plate 10.

3 is a cross-sectional view taken along the line III-III in each drawing of FIG. 1, and is a longitudinal cross-sectional view showing details of a connecting portion 10C of the plate 10 by the joint 20. FIG.

FIGS. 4 (a) to 4 (c) show a joint 30 which can be used for a connecting portion 10C instead of the joint 20 shown in FIG.
It is a longitudinal cross-sectional view which shows 40 and 50.

FIG. 5 is a longitudinal sectional view showing another (other than FIGS. 3 and 4) forms that can be used for the connecting portion 10C of the plate 10.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle (cabin vehicle) 2 Roof 3 Wall 5.6 Underframe 10.10A / 10B (including hollow part) plate 10C Connecting part 11 Outer skin (outer skin) 12 Endothelium (inner skin) 14 Hollow part 20/30/40・ 50 Fitting

[Procedure amendment]

[Submission date] March 24, 2000 (200.3.2.
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

According to a first aspect of the present invention, there is provided a vehicle structure having an extruding member having a skin inside and outside and including a hollow portion therebetween.
For a vehicle in which a side (side wall), roof or underframe (floor) is formed by arranging a plate made of a metal (that is, the above-mentioned hollow plate) with the extending direction of the hollow portion facing the front-rear direction of the vehicle. In the structure, by connecting the above-mentioned plate having a length less than the entire length of the vehicle (for one vehicle) in the front-rear direction of the vehicle,
The present invention is characterized in that the side, the roof or the underframe is configured (that is, by the hollow plate as described above).

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

In this vehicle structure, since the side of the vehicle, the roof, and the underframe are formed by connecting hollow plates in the front-rear direction of the vehicle, the plate before the structure is used as the plate before the structure. There is no need to manufacture long products. Extrusion processing of such hollow plates used for vehicle structures
However , if the required length of the plate can be shortened, the extrusion process itself for manufacturing the plate can be easily performed at a low cost. As for the extrusion process, if the product length is short, it is easy to maintain the temperature closely related to the ductility and deformation resistance of the material, and the friction and lubrication state between the material and the die during extrusion is constant The difficulty of processing is greatly eased because it is easy to maintain.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

[0015] The vehicle body structure according to claim 4, the connection of the plate in the longitudinal direction of the vehicle, particularly through the joint, butt
It is performed by welding other than the butt welding, and as the joint, for example, each of the joints 20, 30, 40 in FIG. 3 or FIG.
A flange portion in contact with the inner surface of the outer skin (inward surface, that is, the surface on the inside of the vehicle), and the inner surface (inward surface) or the outer surface of the inner skin (outward surface, that is, the vehicle); A profile (cross-section) having a flange portion in contact with the outer surface and a web portion connecting between the flange portions and extending in the width or height direction of the vehicle (that is, a direction orthogonal to the front-rear direction). H shape
It is characterized by using a metal material such as an I type or C type (groove type).

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

[0032]

According to the vehicle structure described in the first aspect, it is not necessary to use a hollow plate having a length equal to or more than the entire length of the vehicle as a constituent material. Thus the hollow of the plate, can be easily manufactured structure of the material at low cost by extrusion <br/>, resulting possibly be produced by conventional was impossible material, especially before assembly It can be transported without much trouble and cost.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

According to the vehicle structure of the fourth aspect, since the plates are connected to each other by welding using a specific joint, simple connection can be performed with a small amount of work, and the cost of the vehicle structure is reduced. This is because the connection of thin plates by welding is easy through welding other than butt welding through joints, and by using such joints, the plates can be correctly positioned without any trouble and the plates can be connected. The advantage is that the joints used are low cost and easily available. Since there is no step on the outer surface of the vehicle, there is also an advantage that the appearance of the vehicle can be improved while simplifying the finish after welding.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shunji Takahashi 2-1-1-18 Wadayama-dori, Hyogo-ku, Kobe-shi, Hyogo Inside Kawasaki Heavy Industries, Ltd. Hyogo Plant

Claims (4)

[Claims] 1. A vehicle for which a side, a roof or an underframe is formed by arranging plates having a skin inside and outside and including a hollow portion between the plates so that the extending direction of the hollow portion is oriented in the front-rear direction of the vehicle. A vehicle structure, wherein the side, the roof, or the underframe is configured by connecting the plates having a length less than the entire length of the vehicle in the front-rear direction of the vehicle. 2. The connection of the plate in the longitudinal direction of the vehicle,
The vehicle according to claim 1, wherein the welding is performed along a line connecting a plurality of locations having different positions in the same direction in a comb shape at one location near the middle of the vehicle in the same direction. Structure. 3. The connection of the plate in the longitudinal direction of the vehicle,
3. The vehicle structure according to claim 1, wherein the inner and outer skins are butt-welded, or the inner and outer skins are welded via a plate-like joint. 4. 4. The connection of the plate in the longitudinal direction of the vehicle,
It is made by welding through a joint, and as the joint, a flange portion that contacts the inner surface of the outer skin, a flange portion that contacts the inner surface or the outer surface of the inner skin, and a web that connects between the flange portions The vehicle structure according to claim 1, wherein a profile having a portion and extending in a width or height direction of the vehicle is used.